Merge pull request #4770 from edouardb/add-scaleway-builder

Add Scaleway builder

README.md

@@ -38,6 +38,7 @@ comes out of the box with support for the following platforms:
 * Parallels
 * ProfitBricks
 * QEMU. Both KVM and Xen images.
+* Scaleway
 * Triton (Joyent Public Cloud)
 * VMware
 * VirtualBox

builder/scaleway/artifact.go

@@ -0,0 +1,62 @@
+package scaleway
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type Artifact struct {
+	// The name of the image
+	imageName string
+
+	// The ID of the image
+	imageID string
+
+	// The name of the snapshot
+	snapshotName string
+
+	// The ID of the snapshot
+	snapshotID string
+
+	// The name of the region
+	regionName string
+
+	// The client for making API calls
+	client *api.ScalewayAPI
+}
+
+func (*Artifact) BuilderId() string {
+	return BuilderId
+}
+
+func (*Artifact) Files() []string {
+	// No files with Scaleway
+	return nil
+}
+
+func (a *Artifact) Id() string {
+	return fmt.Sprintf("%s:%s", a.regionName, a.imageID)
+}
+
+func (a *Artifact) String() string {
+	return fmt.Sprintf("An image was created: '%v' (ID: %v) in region '%v' based on snapshot '%v' (ID: %v)",
+		a.imageName, a.imageID, a.regionName, a.snapshotName, a.snapshotID)
+}
+
+func (a *Artifact) State(name string) interface{} {
+	return nil
+}
+
+func (a *Artifact) Destroy() error {
+	log.Printf("Destroying image: %s (%s)", a.imageID, a.imageName)
+	if err := a.client.DeleteImage(a.imageID); err != nil {
+		return err
+	}
+	log.Printf("Destroying snapshot: %s (%s)", a.snapshotID, a.snapshotName)
+	if err := a.client.DeleteSnapshot(a.snapshotID); err != nil {
+		return err
+	}
+	return nil
+}

builder/scaleway/artifact_test.go

@@ -0,0 +1,33 @@
+package scaleway
+
+import (
+	"testing"
+
+	"github.com/hashicorp/packer/packer"
+)
+
+func TestArtifact_Impl(t *testing.T) {
+	var raw interface{}
+	raw = &Artifact{}
+	if _, ok := raw.(packer.Artifact); !ok {
+		t.Fatalf("Artifact should be artifact")
+	}
+}
+
+func TestArtifactId(t *testing.T) {
+	a := &Artifact{"packer-foobar-image", "cc586e45-5156-4f71-b223-cf406b10dd1d", "packer-foobar-snapshot", "cc586e45-5156-4f71-b223-cf406b10dd1c", "ams1", nil}
+	expected := "ams1:cc586e45-5156-4f71-b223-cf406b10dd1d"
+
+	if a.Id() != expected {
+		t.Fatalf("artifact ID should match: %v", expected)
+	}
+}
+
+func TestArtifactString(t *testing.T) {
+	a := &Artifact{"packer-foobar-image", "cc586e45-5156-4f71-b223-cf406b10dd1d", "packer-foobar-snapshot", "cc586e45-5156-4f71-b223-cf406b10dd1c", "ams1", nil}
+	expected := "An image was created: 'packer-foobar-image' (ID: cc586e45-5156-4f71-b223-cf406b10dd1d) in region 'ams1' based on snapshot 'packer-foobar-snapshot' (ID: cc586e45-5156-4f71-b223-cf406b10dd1c)"
+
+	if a.String() != expected {
+		t.Fatalf("artifact string should match: %v", expected)
+	}
+}

builder/scaleway/builder.go

@@ -0,0 +1,106 @@
+// The scaleway package contains a packer.Builder implementation
+// that builds Scaleway images (snapshots).
+
+package scaleway
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/hashicorp/packer/common"
+	"github.com/hashicorp/packer/helper/communicator"
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+// The unique id for the builder
+const BuilderId = "hashicorp.scaleway"
+
+type Builder struct {
+	config Config
+	runner multistep.Runner
+}
+
+func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
+	c, warnings, errs := NewConfig(raws...)
+	if errs != nil {
+		return warnings, errs
+	}
+	b.config = *c
+
+	return nil, nil
+}
+
+func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
+	client, err := api.NewScalewayAPI(b.config.Organization, b.config.Token, b.config.UserAgent, b.config.Region)
+
+	if err != nil {
+		ui.Error(err.Error())
+		return nil, err
+	}
+
+	state := new(multistep.BasicStateBag)
+	state.Put("config", b.config)
+	state.Put("client", client)
+	state.Put("hook", hook)
+	state.Put("ui", ui)
+
+	steps := []multistep.Step{
+		&stepCreateSSHKey{
+			Debug:          b.config.PackerDebug,
+			DebugKeyPath:   fmt.Sprintf("scw_%s.pem", b.config.PackerBuildName),
+			PrivateKeyFile: b.config.Comm.SSHPrivateKey,
+		},
+		new(stepCreateServer),
+		new(stepServerInfo),
+		&communicator.StepConnect{
+			Config:    &b.config.Comm,
+			Host:      commHost,
+			SSHConfig: sshConfig,
+		},
+		new(common.StepProvision),
+		new(stepShutdown),
+		new(stepSnapshot),
+		new(stepImage),
+	}
+
+	b.runner = common.NewRunnerWithPauseFn(steps, b.config.PackerConfig, ui, state)
+	b.runner.Run(state)
+
+	if rawErr, ok := state.GetOk("error"); ok {
+		return nil, rawErr.(error)
+	}
+
+	// If we were interrupted or cancelled, then just exit.
+	if _, ok := state.GetOk(multistep.StateCancelled); ok {
+		return nil, errors.New("Build was cancelled.")
+	}
+
+	if _, ok := state.GetOk(multistep.StateHalted); ok {
+		return nil, errors.New("Build was halted.")
+	}
+
+	if _, ok := state.GetOk("snapshot_name"); !ok {
+		return nil, errors.New("Cannot find snapshot_name in state.")
+	}
+
+	artifact := &Artifact{
+		imageName:    state.Get("image_name").(string),
+		imageID:      state.Get("image_id").(string),
+		snapshotName: state.Get("snapshot_name").(string),
+		snapshotID:   state.Get("snapshot_id").(string),
+		regionName:   state.Get("region").(string),
+		client:       client,
+	}
+
+	return artifact, nil
+}
+
+func (b *Builder) Cancel() {
+	if b.runner != nil {
+		log.Println("Cancelling the step runner...")
+		b.runner.Cancel()
+	}
+}

builder/scaleway/builder_test.go

@@ -0,0 +1,237 @@
+package scaleway
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/hashicorp/packer/packer"
+)
+
+func testConfig() map[string]interface{} {
+	return map[string]interface{}{
+		"api_access_key":  "foo",
+		"api_token":       "bar",
+		"region":          "ams1",
+		"commercial_type": "VC1S",
+		"ssh_username":    "root",
+		"image":           "image-uuid",
+	}
+}
+
+func TestBuilder_ImplementsBuilder(t *testing.T) {
+	var raw interface{}
+	raw = &Builder{}
+	if _, ok := raw.(packer.Builder); !ok {
+		t.Fatalf("Builder should be a builder")
+	}
+}
+
+func TestBuilder_Prepare_BadType(t *testing.T) {
+	b := &Builder{}
+	c := map[string]interface{}{
+		"api_token": []string{},
+	}
+
+	warnings, err := b.Prepare(c)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatalf("prepare should fail")
+	}
+}
+
+func TestBuilderPrepare_InvalidKey(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	config["i_should_not_be_valid"] = true
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatal("should have error")
+	}
+}
+
+func TestBuilderPrepare_Region(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	delete(config, "region")
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatalf("should error")
+	}
+
+	expected := "ams1"
+
+	config["region"] = expected
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	if b.config.Region != expected {
+		t.Errorf("found %s, expected %s", b.config.Region, expected)
+	}
+}
+
+func TestBuilderPrepare_CommercialType(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	delete(config, "commercial_type")
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatalf("should error")
+	}
+
+	expected := "VC1S"
+
+	config["commercial_type"] = expected
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	if b.config.CommercialType != expected {
+		t.Errorf("found %s, expected %s", b.config.CommercialType, expected)
+	}
+}
+
+func TestBuilderPrepare_Image(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	delete(config, "image")
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatal("should error")
+	}
+
+	expected := "cc586e45-5156-4f71-b223-cf406b10dd1c"
+
+	config["image"] = expected
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	if b.config.Image != expected {
+		t.Errorf("found %s, expected %s", b.config.Image, expected)
+	}
+}
+
+func TestBuilderPrepare_SnapshotName(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	if b.config.SnapshotName == "" {
+		t.Errorf("invalid: %s", b.config.SnapshotName)
+	}
+
+	config["snapshot_name"] = "foobarbaz"
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	config["snapshot_name"] = "{{timestamp}}"
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	_, err = strconv.ParseInt(b.config.SnapshotName, 0, 0)
+	if err != nil {
+		t.Fatalf("failed to parse int in template: %s", err)
+	}
+
+}
+
+func TestBuilderPrepare_ServerName(t *testing.T) {
+	var b Builder
+	config := testConfig()
+
+	warnings, err := b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	if b.config.ServerName == "" {
+		t.Errorf("invalid: %s", b.config.ServerName)
+	}
+
+	config["server_name"] = "foobar"
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	config["server_name"] = "foobar-{{timestamp}}"
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err != nil {
+		t.Fatalf("should not have error: %s", err)
+	}
+
+	config["server_name"] = "foobar-{{"
+	b = Builder{}
+	warnings, err = b.Prepare(config)
+	if len(warnings) > 0 {
+		t.Fatalf("bad: %#v", warnings)
+	}
+	if err == nil {
+		t.Fatal("should have error")
+	}
+
+}

builder/scaleway/config.go

@@ -0,0 +1,122 @@
+package scaleway
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/hashicorp/packer/common"
+	"github.com/hashicorp/packer/common/uuid"
+	"github.com/hashicorp/packer/helper/communicator"
+	"github.com/hashicorp/packer/helper/config"
+	"github.com/hashicorp/packer/packer"
+	"github.com/hashicorp/packer/template/interpolate"
+	"github.com/mitchellh/mapstructure"
+)
+
+type Config struct {
+	common.PackerConfig `mapstructure:",squash"`
+	Comm                communicator.Config `mapstructure:",squash"`
+
+	Token        string `mapstructure:"api_token"`
+	Organization string `mapstructure:"api_access_key"`
+
+	Region         string `mapstructure:"region"`
+	Image          string `mapstructure:"image"`
+	CommercialType string `mapstructure:"commercial_type"`
+
+	SnapshotName string `mapstructure:"snapshot_name"`
+	ImageName    string `mapstructure:"image_name"`
+	ServerName   string `mapstructure:"server_name"`
+
+	UserAgent string
+	ctx       interpolate.Context
+}
+
+func NewConfig(raws ...interface{}) (*Config, []string, error) {
+	c := new(Config)
+
+	var md mapstructure.Metadata
+	err := config.Decode(c, &config.DecodeOpts{
+		Metadata:           &md,
+		Interpolate:        true,
+		InterpolateContext: &c.ctx,
+		InterpolateFilter: &interpolate.RenderFilter{
+			Exclude: []string{
+				"run_command",
+			},
+		},
+	}, raws...)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c.UserAgent = "Packer - Scaleway builder"
+
+	if c.Organization == "" {
+		c.Organization = os.Getenv("SCALEWAY_API_ACCESS_KEY")
+	}
+
+	if c.Token == "" {
+		c.Token = os.Getenv("SCALEWAY_API_TOKEN")
+	}
+
+	if c.SnapshotName == "" {
+		def, err := interpolate.Render("snapshot-packer-{{timestamp}}", nil)
+		if err != nil {
+			panic(err)
+		}
+
+		c.SnapshotName = def
+	}
+
+	if c.ImageName == "" {
+		def, err := interpolate.Render("image-packer-{{timestamp}}", nil)
+		if err != nil {
+			panic(err)
+		}
+
+		c.ImageName = def
+	}
+
+	if c.ServerName == "" {
+		// Default to packer-[time-ordered-uuid]
+		c.ServerName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
+	}
+
+	var errs *packer.MultiError
+	if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
+		errs = packer.MultiErrorAppend(errs, es...)
+	}
+	if c.Organization == "" {
+		errs = packer.MultiErrorAppend(
+			errs, errors.New("Scaleway Organization ID must be specified"))
+	}
+
+	if c.Token == "" {
+		errs = packer.MultiErrorAppend(
+			errs, errors.New("Scaleway Token must be specified"))
+	}
+
+	if c.Region == "" {
+		errs = packer.MultiErrorAppend(
+			errs, errors.New("region is required"))
+	}
+
+	if c.CommercialType == "" {
+		errs = packer.MultiErrorAppend(
+			errs, errors.New("commercial type is required"))
+	}
+
+	if c.Image == "" {
+		errs = packer.MultiErrorAppend(
+			errs, errors.New("image is required"))
+	}
+
+	if errs != nil && len(errs.Errors) > 0 {
+		return nil, nil, errs
+	}
+
+	common.ScrubConfig(c, c.Token)
+	return c, nil, nil
+}

builder/scaleway/ssh.go

@@ -0,0 +1,64 @@
+package scaleway
+
+import (
+	"fmt"
+	"net"
+	"os"
+
+	packerssh "github.com/hashicorp/packer/communicator/ssh"
+	"github.com/hashicorp/packer/helper/multistep"
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/agent"
+)
+
+func commHost(state multistep.StateBag) (string, error) {
+	ipAddress := state.Get("server_ip").(string)
+	return ipAddress, nil
+}
+
+func sshConfig(state multistep.StateBag) (*ssh.ClientConfig, error) {
+	config := state.Get("config").(Config)
+	var privateKey string
+
+	var auth []ssh.AuthMethod
+
+	if config.Comm.SSHAgentAuth {
+		authSock := os.Getenv("SSH_AUTH_SOCK")
+		if authSock == "" {
+			return nil, fmt.Errorf("SSH_AUTH_SOCK is not set")
+		}
+
+		sshAgent, err := net.Dial("unix", authSock)
+		if err != nil {
+			return nil, fmt.Errorf("Cannot connect to SSH Agent socket %q: %s", authSock, err)
+		}
+		auth = []ssh.AuthMethod{
+			ssh.PublicKeysCallback(agent.NewClient(sshAgent).Signers),
+		}
+	}
+
+	if config.Comm.SSHPassword != "" {
+		auth = append(auth,
+			ssh.Password(config.Comm.SSHPassword),
+			ssh.KeyboardInteractive(
+				packerssh.PasswordKeyboardInteractive(config.Comm.SSHPassword)),
+		)
+	}
+
+	if config.Comm.SSHPrivateKey != "" {
+		if priv, ok := state.GetOk("privateKey"); ok {
+			privateKey = priv.(string)
+		}
+		signer, err := ssh.ParsePrivateKey([]byte(privateKey))
+		if err != nil {
+			return nil, fmt.Errorf("Error setting up SSH config: %s", err)
+		}
+		auth = append(auth, ssh.PublicKeys(signer))
+	}
+
+	return &ssh.ClientConfig{
+		User:            config.Comm.SSHUsername,
+		Auth:            auth,
+		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
+	}, nil
+}

builder/scaleway/step_create_image.go

@@ -0,0 +1,54 @@
+package scaleway
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type stepImage struct{}
+
+func (s *stepImage) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+	c := state.Get("config").(Config)
+	snapshotID := state.Get("snapshot_id").(string)
+	bootscriptID := ""
+
+	ui.Say(fmt.Sprintf("Creating image: %v", c.ImageName))
+
+	image, err := client.GetImage(c.Image)
+	if err != nil {
+		err := fmt.Errorf("Error getting initial image info: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	if image.DefaultBootscript != nil {
+		bootscriptID = image.DefaultBootscript.Identifier
+	}
+
+	imageID, err := client.PostImage(snapshotID, c.ImageName, bootscriptID, image.Arch)
+	if err != nil {
+		err := fmt.Errorf("Error creating image: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	log.Printf("Image ID: %s", imageID)
+	state.Put("image_id", imageID)
+	state.Put("image_name", c.ImageName)
+	state.Put("region", c.Region)
+
+	return multistep.ActionContinue
+}
+
+func (s *stepImage) Cleanup(state multistep.StateBag) {
+	// no cleanup
+}

builder/scaleway/step_create_server.go

@@ -0,0 +1,78 @@
+package scaleway
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type stepCreateServer struct {
+	serverID string
+}
+
+func (s *stepCreateServer) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+	c := state.Get("config").(Config)
+	sshPubKey := state.Get("ssh_pubkey").(string)
+	tags := []string{}
+
+	ui.Say("Creating server...")
+
+	if sshPubKey != "" {
+		tags = []string{fmt.Sprintf("AUTHORIZED_KEY=%s", strings.TrimSpace(sshPubKey))}
+	}
+
+	server, err := client.PostServer(api.ScalewayServerDefinition{
+		Name:           c.ServerName,
+		Image:          &c.Image,
+		Organization:   c.Organization,
+		CommercialType: c.CommercialType,
+		Tags:           tags,
+	})
+
+	if err != nil {
+		err := fmt.Errorf("Error creating server: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	err = client.PostServerAction(server, "poweron")
+
+	if err != nil {
+		err := fmt.Errorf("Error starting server: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	s.serverID = server
+
+	state.Put("server_id", server)
+
+	return multistep.ActionContinue
+}
+
+func (s *stepCreateServer) Cleanup(state multistep.StateBag) {
+	if s.serverID == "" {
+		return
+	}
+
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+
+	ui.Say("Destroying server...")
+
+	err := client.DeleteServerForce(s.serverID)
+
+	if err != nil {
+		ui.Error(fmt.Sprintf(
+			"Error destroying server. Please destroy it manually: %s", err))
+	}
+
+}

builder/scaleway/step_create_ssh_key.go

@@ -0,0 +1,106 @@
+package scaleway
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"runtime"
+	"strings"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"golang.org/x/crypto/ssh"
+)
+
+type stepCreateSSHKey struct {
+	Debug          bool
+	DebugKeyPath   string
+	PrivateKeyFile string
+}
+
+func (s *stepCreateSSHKey) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	ui := state.Get("ui").(packer.Ui)
+
+	if s.PrivateKeyFile != "" {
+		ui.Say("Using existing SSH private key")
+		privateKeyBytes, err := ioutil.ReadFile(s.PrivateKeyFile)
+		if err != nil {
+			state.Put("error", fmt.Errorf(
+				"Error loading configured private key file: %s", err))
+			return multistep.ActionHalt
+		}
+
+		state.Put("privateKey", string(privateKeyBytes))
+		state.Put("ssh_pubkey", "")
+
+		return multistep.ActionContinue
+	}
+
+	ui.Say("Creating temporary ssh key for server...")
+
+	priv, err := rsa.GenerateKey(rand.Reader, 2014)
+	if err != nil {
+		err := fmt.Errorf("Error creating temporary SSH key: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	// ASN.1 DER encoded form
+	priv_der := x509.MarshalPKCS1PrivateKey(priv)
+	priv_blk := pem.Block{
+		Type:    "RSA PRIVATE KEY",
+		Headers: nil,
+		Bytes:   priv_der,
+	}
+
+	// Set the private key in the statebag for later
+	state.Put("privateKey", string(pem.EncodeToMemory(&priv_blk)))
+
+	pub, _ := ssh.NewPublicKey(&priv.PublicKey)
+	pub_sshformat := string(ssh.MarshalAuthorizedKey(pub))
+	pub_sshformat = strings.Replace(pub_sshformat, " ", "_", -1)
+
+	log.Printf("temporary ssh key created")
+
+	// Remember some state for the future
+	state.Put("ssh_pubkey", string(pub_sshformat))
+
+	// If we're in debug mode, output the private key to the working directory.
+	if s.Debug {
+		ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
+		f, err := os.Create(s.DebugKeyPath)
+		if err != nil {
+			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
+			return multistep.ActionHalt
+		}
+		defer f.Close()
+
+		// Write the key out
+		if _, err := f.Write(pem.EncodeToMemory(&priv_blk)); err != nil {
+			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
+			return multistep.ActionHalt
+		}
+
+		// Chmod it so that it is SSH ready
+		if runtime.GOOS != "windows" {
+			if err := f.Chmod(0600); err != nil {
+				state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
+				return multistep.ActionHalt
+			}
+		}
+	}
+
+	return multistep.ActionContinue
+}
+
+func (s *stepCreateSSHKey) Cleanup(state multistep.StateBag) {
+	// SSH key is passed via tag. Nothing to do here.
+	return
+}

builder/scaleway/step_server_info.go

@@ -0,0 +1,45 @@
+package scaleway
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type stepServerInfo struct{}
+
+func (s *stepServerInfo) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+	serverID := state.Get("server_id").(string)
+
+	ui.Say("Waiting for server to become active...")
+
+	_, err := api.WaitForServerState(client, serverID, "running")
+	if err != nil {
+		err := fmt.Errorf("Error waiting for server to become booted: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	server, err := client.GetServer(serverID)
+	if err != nil {
+		err := fmt.Errorf("Error retrieving server: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	state.Put("server_ip", server.PublicAddress.IP)
+	state.Put("root_volume_id", server.Volumes["0"].Identifier)
+
+	return multistep.ActionContinue
+}
+
+func (s *stepServerInfo) Cleanup(state multistep.StateBag) {
+	// no cleanup
+}

builder/scaleway/step_shutdown.go

@@ -0,0 +1,44 @@
+package scaleway
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type stepShutdown struct{}
+
+func (s *stepShutdown) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+	serverID := state.Get("server_id").(string)
+
+	ui.Say("Shutting down server...")
+
+	err := client.PostServerAction(serverID, "poweroff")
+
+	if err != nil {
+		err := fmt.Errorf("Error stopping server: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	_, err = api.WaitForServerState(client, serverID, "stopped")
+
+	if err != nil {
+		err := fmt.Errorf("Error shutting down server: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	return multistep.ActionContinue
+}
+
+func (s *stepShutdown) Cleanup(state multistep.StateBag) {
+	// no cleanup
+}

builder/scaleway/step_snapshot.go

@@ -0,0 +1,40 @@
+package scaleway
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/scaleway/scaleway-cli/pkg/api"
+)
+
+type stepSnapshot struct{}
+
+func (s *stepSnapshot) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	client := state.Get("client").(*api.ScalewayAPI)
+	ui := state.Get("ui").(packer.Ui)
+	c := state.Get("config").(Config)
+	volumeID := state.Get("root_volume_id").(string)
+
+	ui.Say(fmt.Sprintf("Creating snapshot: %v", c.SnapshotName))
+	snapshot, err := client.PostSnapshot(volumeID, c.SnapshotName)
+	if err != nil {
+		err := fmt.Errorf("Error creating snapshot: %s", err)
+		state.Put("error", err)
+		ui.Error(err.Error())
+		return multistep.ActionHalt
+	}
+
+	log.Printf("Snapshot ID: %s", snapshot)
+	state.Put("snapshot_id", snapshot)
+	state.Put("snapshot_name", c.SnapshotName)
+	state.Put("region", c.Region)
+
+	return multistep.ActionContinue
+}
+
+func (s *stepSnapshot) Cleanup(state multistep.StateBag) {
+	// no cleanup
+}

command/plugin.go

@@ -39,6 +39,7 @@ import (
 	parallelspvmbuilder "github.com/hashicorp/packer/builder/parallels/pvm"
 	profitbricksbuilder "github.com/hashicorp/packer/builder/profitbricks"
 	qemubuilder "github.com/hashicorp/packer/builder/qemu"
+	scalewaybuilder "github.com/hashicorp/packer/builder/scaleway"
 	tritonbuilder "github.com/hashicorp/packer/builder/triton"
 	virtualboxisobuilder "github.com/hashicorp/packer/builder/virtualbox/iso"
 	virtualboxovfbuilder "github.com/hashicorp/packer/builder/virtualbox/ovf"
@@ -108,6 +109,7 @@ var Builders = map[string]packer.Builder{
 	"parallels-pvm":       new(parallelspvmbuilder.Builder),
 	"profitbricks":        new(profitbricksbuilder.Builder),
 	"qemu":                new(qemubuilder.Builder),
+	"scaleway":            new(scalewaybuilder.Builder),
 	"triton":              new(tritonbuilder.Builder),
 	"virtualbox-iso":      new(virtualboxisobuilder.Builder),
 	"virtualbox-ovf":      new(virtualboxovfbuilder.Builder),

post-processor/vagrant-cloud/post-processor.go

@@ -189,6 +189,8 @@ func providerFromBuilderName(name string) string {
 	switch name {
 	case "aws":
 		return "aws"
+	case "scaleway":
+		return "scaleway"
 	case "digitalocean":
 		return "digitalocean"
 	case "virtualbox":

post-processor/vagrant/post-processor.go

@@ -26,6 +26,7 @@ var builtins = map[string]string{
 	"mitchellh.vmware-esx":      "vmware",
 	"pearkes.digitalocean":      "digitalocean",
 	"packer.googlecompute":      "google",
+	"hashicorp.scaleway":        "scaleway",
 	"packer.parallels":          "parallels",
 	"MSOpenTech.hyperv":         "hyperv",
 	"transcend.qemu":            "libvirt",
@@ -221,6 +222,8 @@ func providerForName(name string) Provider {
 	switch name {
 	case "aws":
 		return new(AWSProvider)
+	case "scaleway":
+		return new(ScalewayProvider)
 	case "digitalocean":
 		return new(DigitalOceanProvider)
 	case "virtualbox":

post-processor/vagrant/scaleway.go

@@ -0,0 +1,52 @@
+package vagrant
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/hashicorp/packer/packer"
+	"strings"
+	"text/template"
+)
+
+type scalewayVagrantfileTemplate struct {
+	Image  string ""
+	Region string ""
+}
+
+type ScalewayProvider struct{}
+
+func (p *ScalewayProvider) KeepInputArtifact() bool {
+	return true
+}
+
+func (p *ScalewayProvider) Process(ui packer.Ui, artifact packer.Artifact, dir string) (vagrantfile string, metadata map[string]interface{}, err error) {
+	// Create the metadata
+	metadata = map[string]interface{}{"provider": "scaleway"}
+
+	// Determine the image and region...
+	tplData := &scalewayVagrantfileTemplate{}
+
+	parts := strings.Split(artifact.Id(), ":")
+	if len(parts) != 2 {
+		err = fmt.Errorf("Poorly formatted artifact ID: %s", artifact.Id())
+		return
+	}
+	tplData.Region = parts[0]
+	tplData.Image = parts[1]
+
+	// Build up the Vagrantfile
+	var contents bytes.Buffer
+	t := template.Must(template.New("vf").Parse(defaultScalewayVagrantfile))
+	err = t.Execute(&contents, tplData)
+	vagrantfile = contents.String()
+	return
+}
+
+var defaultScalewayVagrantfile = `
+Vagrant.configure("2") do |config|
+  config.vm.provider :scaleway do |scaleway|
+	scaleway.image = "{{ .Image }}"
+	scaleway.region = "{{ .Region }}"
+  end
+end
+`

vendor/github.com/Sirupsen/logrus/CHANGELOG.md

@@ -0,0 +1,94 @@
+# 0.11.5
+
+* feature: add writer and writerlevel to entry (#372)
+
+# 0.11.4
+
+* bug: fix undefined variable on solaris (#493)
+
+# 0.11.3
+
+* formatter: configure quoting of empty values (#484)
+* formatter: configure quoting character (default is `"`) (#484)
+* bug: fix not importing io correctly in non-linux environments (#481)
+
+# 0.11.2
+
+* bug: fix windows terminal detection (#476)
+
+# 0.11.1
+
+* bug: fix tty detection with custom out (#471)
+
+# 0.11.0
+
+* performance: Use bufferpool to allocate (#370)
+* terminal: terminal detection for app-engine (#343)
+* feature: exit handler (#375)
+
+# 0.10.0
+
+* feature: Add a test hook (#180)
+* feature: `ParseLevel` is now case-insensitive (#326)
+* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
+* performance: avoid re-allocations on `WithFields` (#335)
+
+# 0.9.0
+
+* logrus/text_formatter: don't emit empty msg
+* logrus/hooks/airbrake: move out of main repository
+* logrus/hooks/sentry: move out of main repository
+* logrus/hooks/papertrail: move out of main repository
+* logrus/hooks/bugsnag: move out of main repository
+* logrus/core: run tests with `-race`
+* logrus/core: detect TTY based on `stderr`
+* logrus/core: support `WithError` on logger
+* logrus/core: Solaris support
+
+# 0.8.7
+
+* logrus/core: fix possible race (#216)
+* logrus/doc: small typo fixes and doc improvements
+
+
+# 0.8.6
+
+* hooks/raven: allow passing an initialized client
+
+# 0.8.5
+
+* logrus/core: revert #208
+
+# 0.8.4
+
+* formatter/text: fix data race (#218)
+
+# 0.8.3
+
+* logrus/core: fix entry log level (#208)
+* logrus/core: improve performance of text formatter by 40%
+* logrus/core: expose `LevelHooks` type
+* logrus/core: add support for DragonflyBSD and NetBSD
+* formatter/text: print structs more verbosely
+
+# 0.8.2
+
+* logrus: fix more Fatal family functions
+
+# 0.8.1
+
+* logrus: fix not exiting on `Fatalf` and `Fatalln`
+
+# 0.8.0
+
+* logrus: defaults to stderr instead of stdout
+* hooks/sentry: add special field for `*http.Request`
+* formatter/text: ignore Windows for colors
+
+# 0.7.3
+
+* formatter/\*: allow configuration of timestamp layout
+
+# 0.7.2
+
+* formatter/text: Add configuration option for time format (#158)

vendor/github.com/Sirupsen/logrus/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Simon Eskildsen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/Sirupsen/logrus/README.md

@@ -0,0 +1,479 @@
+# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/Sirupsen/logrus.svg?branch=master)](https://travis-ci.org/Sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/Sirupsen/logrus?status.svg)](https://godoc.org/github.com/Sirupsen/logrus)
+
+**Seeing weird case-sensitive problems?** See [this
+issue](https://github.com/sirupsen/logrus/issues/451#issuecomment-264332021).
+This change has been reverted. I apologize for causing this. I greatly
+underestimated the impact this would have. Logrus strives for stability and
+backwards compatibility and failed to provide that.
+
+Logrus is a structured logger for Go (golang), completely API compatible with
+the standard library logger. [Godoc][godoc]. **Please note the Logrus API is not
+yet stable (pre 1.0). Logrus itself is completely stable and has been used in
+many large deployments. The core API is unlikely to change much but please
+version control your Logrus to make sure you aren't fetching latest `master` on
+every build.**
+
+Nicely color-coded in development (when a TTY is attached, otherwise just
+plain text):
+
+![Colored](http://i.imgur.com/PY7qMwd.png)
+
+With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
+or Splunk:
+
+```json
+{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the
+ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
+
+{"level":"warning","msg":"The group's number increased tremendously!",
+"number":122,"omg":true,"time":"2014-03-10 19:57:38.562471297 -0400 EDT"}
+
+{"animal":"walrus","level":"info","msg":"A giant walrus appears!",
+"size":10,"time":"2014-03-10 19:57:38.562500591 -0400 EDT"}
+
+{"animal":"walrus","level":"info","msg":"Tremendously sized cow enters the ocean.",
+"size":9,"time":"2014-03-10 19:57:38.562527896 -0400 EDT"}
+
+{"level":"fatal","msg":"The ice breaks!","number":100,"omg":true,
+"time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
+```
+
+With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
+attached, the output is compatible with the
+[logfmt](http://godoc.org/github.com/kr/logfmt) format:
+
+```text
+time="2015-03-26T01:27:38-04:00" level=debug msg="Started observing beach" animal=walrus number=8
+time="2015-03-26T01:27:38-04:00" level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
+time="2015-03-26T01:27:38-04:00" level=warning msg="The group's number increased tremendously!" number=122 omg=true
+time="2015-03-26T01:27:38-04:00" level=debug msg="Temperature changes" temperature=-4
+time="2015-03-26T01:27:38-04:00" level=panic msg="It's over 9000!" animal=orca size=9009
+time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x2082280c0 map[animal:orca size:9009] 2015-03-26 01:27:38.441574009 -0400 EDT panic It's over 9000!} number=100 omg=true
+exit status 1
+```
+
+#### Example
+
+The simplest way to use Logrus is simply the package-level exported logger:
+
+```go
+package main
+
+import (
+  log "github.com/Sirupsen/logrus"
+)
+
+func main() {
+  log.WithFields(log.Fields{
+    "animal": "walrus",
+  }).Info("A walrus appears")
+}
+```
+
+Note that it's completely api-compatible with the stdlib logger, so you can
+replace your `log` imports everywhere with `log "github.com/Sirupsen/logrus"`
+and you'll now have the flexibility of Logrus. You can customize it all you
+want:
+
+```go
+package main
+
+import (
+  "os"
+  log "github.com/Sirupsen/logrus"
+)
+
+func init() {
+  // Log as JSON instead of the default ASCII formatter.
+  log.SetFormatter(&log.JSONFormatter{})
+
+  // Output to stdout instead of the default stderr
+  // Can be any io.Writer, see below for File example
+  log.SetOutput(os.Stdout)
+
+  // Only log the warning severity or above.
+  log.SetLevel(log.WarnLevel)
+}
+
+func main() {
+  log.WithFields(log.Fields{
+    "animal": "walrus",
+    "size":   10,
+  }).Info("A group of walrus emerges from the ocean")
+
+  log.WithFields(log.Fields{
+    "omg":    true,
+    "number": 122,
+  }).Warn("The group's number increased tremendously!")
+
+  log.WithFields(log.Fields{
+    "omg":    true,
+    "number": 100,
+  }).Fatal("The ice breaks!")
+
+  // A common pattern is to re-use fields between logging statements by re-using
+  // the logrus.Entry returned from WithFields()
+  contextLogger := log.WithFields(log.Fields{
+    "common": "this is a common field",
+    "other": "I also should be logged always",
+  })
+
+  contextLogger.Info("I'll be logged with common and other field")
+  contextLogger.Info("Me too")
+}
+```
+
+For more advanced usage such as logging to multiple locations from the same
+application, you can also create an instance of the `logrus` Logger:
+
+```go
+package main
+
+import (
+  "os"
+  "github.com/Sirupsen/logrus"
+)
+
+// Create a new instance of the logger. You can have any number of instances.
+var log = logrus.New()
+
+func main() {
+  // The API for setting attributes is a little different than the package level
+  // exported logger. See Godoc.
+  log.Out = os.Stdout
+
+  // You could set this to any `io.Writer` such as a file
+  // file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
+  // if err == nil {
+  //  log.Out = file
+  // } else {
+  //  log.Info("Failed to log to file, using default stderr")
+  // }
+
+  log.WithFields(logrus.Fields{
+    "animal": "walrus",
+    "size":   10,
+  }).Info("A group of walrus emerges from the ocean")
+}
+```
+
+#### Fields
+
+Logrus encourages careful, structured logging though logging fields instead of
+long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
+to send event %s to topic %s with key %d")`, you should log the much more
+discoverable:
+
+```go
+log.WithFields(log.Fields{
+  "event": event,
+  "topic": topic,
+  "key": key,
+}).Fatal("Failed to send event")
+```
+
+We've found this API forces you to think about logging in a way that produces
+much more useful logging messages. We've been in countless situations where just
+a single added field to a log statement that was already there would've saved us
+hours. The `WithFields` call is optional.
+
+In general, with Logrus using any of the `printf`-family functions should be
+seen as a hint you should add a field, however, you can still use the
+`printf`-family functions with Logrus.
+
+#### Default Fields
+
+Often it's helpful to have fields _always_ attached to log statements in an
+application or parts of one. For example, you may want to always log the
+`request_id` and `user_ip` in the context of a request. Instead of writing
+`log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})` on
+every line, you can create a `logrus.Entry` to pass around instead:
+
+```go
+requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
+requestLogger.Info("something happened on that request") # will log request_id and user_ip
+requestLogger.Warn("something not great happened")
+```
+
+#### Hooks
+
+You can add hooks for logging levels. For example to send errors to an exception
+tracking service on `Error`, `Fatal` and `Panic`, info to StatsD or log to
+multiple places simultaneously, e.g. syslog.
+
+Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
+`init`:
+
+```go
+import (
+  log "github.com/Sirupsen/logrus"
+  "gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "aibrake"
+  logrus_syslog "github.com/Sirupsen/logrus/hooks/syslog"
+  "log/syslog"
+)
+
+func init() {
+
+  // Use the Airbrake hook to report errors that have Error severity or above to
+  // an exception tracker. You can create custom hooks, see the Hooks section.
+  log.AddHook(airbrake.NewHook(123, "xyz", "production"))
+
+  hook, err := logrus_syslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
+  if err != nil {
+    log.Error("Unable to connect to local syslog daemon")
+  } else {
+    log.AddHook(hook)
+  }
+}
+```
+Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
+
+| Hook  | Description |
+| ----- | ----------- |
+| [Airbrake "legacy"](https://github.com/gemnasium/logrus-airbrake-legacy-hook) | Send errors to an exception tracking service compatible with the Airbrake API V2. Uses [`airbrake-go`](https://github.com/tobi/airbrake-go) behind the scenes. |
+| [Airbrake](https://github.com/gemnasium/logrus-airbrake-hook) | Send errors to the Airbrake API V3. Uses the official [`gobrake`](https://github.com/airbrake/gobrake) behind the scenes. |
+| [Amazon Kinesis](https://github.com/evalphobia/logrus_kinesis) | Hook for logging to [Amazon Kinesis](https://aws.amazon.com/kinesis/) |
+| [Amqp-Hook](https://github.com/vladoatanasov/logrus_amqp) | Hook for logging to Amqp broker (Like RabbitMQ) |
+| [Bugsnag](https://github.com/Shopify/logrus-bugsnag/blob/master/bugsnag.go) | Send errors to the Bugsnag exception tracking service. |
+| [DeferPanic](https://github.com/deferpanic/dp-logrus) | Hook for logging to DeferPanic |
+| [Discordrus](https://github.com/kz/discordrus) | Hook for logging to [Discord](https://discordapp.com/) |
+| [ElasticSearch](https://github.com/sohlich/elogrus) | Hook for logging to ElasticSearch|
+| [Firehose](https://github.com/beaubrewer/firehose) | Hook for logging to [Amazon Firehose](https://aws.amazon.com/kinesis/firehose/)
+| [Fluentd](https://github.com/evalphobia/logrus_fluent) | Hook for logging to fluentd |
+| [Go-Slack](https://github.com/multiplay/go-slack) | Hook for logging to [Slack](https://slack.com) |
+| [Graylog](https://github.com/gemnasium/logrus-graylog-hook) | Hook for logging to [Graylog](http://graylog2.org/) |
+| [Hiprus](https://github.com/nubo/hiprus) | Send errors to a channel in hipchat. |
+| [Honeybadger](https://github.com/agonzalezro/logrus_honeybadger) | Hook for sending exceptions to Honeybadger |
+| [InfluxDB](https://github.com/Abramovic/logrus_influxdb) | Hook for logging to influxdb |
+| [Influxus] (http://github.com/vlad-doru/influxus) | Hook for concurrently logging to [InfluxDB] (http://influxdata.com/) |
+| [Journalhook](https://github.com/wercker/journalhook) | Hook for logging to `systemd-journald` |
+| [KafkaLogrus](https://github.com/goibibo/KafkaLogrus) | Hook for logging to kafka |
+| [LFShook](https://github.com/rifflock/lfshook) | Hook for logging to the local filesystem |
+| [Logentries](https://github.com/jcftang/logentriesrus) | Hook for logging to [Logentries](https://logentries.com/) |
+| [Logentrus](https://github.com/puddingfactory/logentrus) | Hook for logging to [Logentries](https://logentries.com/) |
+| [Logmatic.io](https://github.com/logmatic/logmatic-go) | Hook for logging to [Logmatic.io](http://logmatic.io/) |
+| [Logrusly](https://github.com/sebest/logrusly) | Send logs to [Loggly](https://www.loggly.com/) |
+| [Logstash](https://github.com/bshuster-repo/logrus-logstash-hook) | Hook for logging to [Logstash](https://www.elastic.co/products/logstash) |
+| [Mail](https://github.com/zbindenren/logrus_mail) | Hook for sending exceptions via mail |
+| [Mongodb](https://github.com/weekface/mgorus) | Hook for logging to mongodb |
+| [NATS-Hook](https://github.com/rybit/nats_logrus_hook) | Hook for logging to [NATS](https://nats.io) |
+| [Octokit](https://github.com/dorajistyle/logrus-octokit-hook) | Hook for logging to github via octokit |
+| [Papertrail](https://github.com/polds/logrus-papertrail-hook) | Send errors to the [Papertrail](https://papertrailapp.com) hosted logging service via UDP. |
+| [PostgreSQL](https://github.com/gemnasium/logrus-postgresql-hook) | Send logs to [PostgreSQL](http://postgresql.org) |
+| [Pushover](https://github.com/toorop/logrus_pushover) | Send error via [Pushover](https://pushover.net) |
+| [Raygun](https://github.com/squirkle/logrus-raygun-hook) | Hook for logging to [Raygun.io](http://raygun.io/) |
+| [Redis-Hook](https://github.com/rogierlommers/logrus-redis-hook) | Hook for logging to a ELK stack (through Redis) |
+| [Rollrus](https://github.com/heroku/rollrus) | Hook for sending errors to rollbar |
+| [Scribe](https://github.com/sagar8192/logrus-scribe-hook) | Hook for logging to [Scribe](https://github.com/facebookarchive/scribe)|
+| [Sentry](https://github.com/evalphobia/logrus_sentry) | Send errors to the Sentry error logging and aggregation service. |
+| [Slackrus](https://github.com/johntdyer/slackrus) | Hook for Slack chat. |
+| [Stackdriver](https://github.com/knq/sdhook) | Hook for logging to [Google Stackdriver](https://cloud.google.com/logging/) |
+| [Sumorus](https://github.com/doublefree/sumorus) | Hook for logging to [SumoLogic](https://www.sumologic.com/)|
+| [Syslog](https://github.com/Sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
+| [TraceView](https://github.com/evalphobia/logrus_appneta) | Hook for logging to [AppNeta TraceView](https://www.appneta.com/products/traceview/) |
+| [Typetalk](https://github.com/dragon3/logrus-typetalk-hook) | Hook for logging to [Typetalk](https://www.typetalk.in/) |
+| [logz.io](https://github.com/ripcurld00d/logrus-logzio-hook) | Hook for logging to [logz.io](https://logz.io), a Log as a Service using Logstash |
+
+#### Level logging
+
+Logrus has six logging levels: Debug, Info, Warning, Error, Fatal and Panic.
+
+```go
+log.Debug("Useful debugging information.")
+log.Info("Something noteworthy happened!")
+log.Warn("You should probably take a look at this.")
+log.Error("Something failed but I'm not quitting.")
+// Calls os.Exit(1) after logging
+log.Fatal("Bye.")
+// Calls panic() after logging
+log.Panic("I'm bailing.")
+```
+
+You can set the logging level on a `Logger`, then it will only log entries with
+that severity or anything above it:
+
+```go
+// Will log anything that is info or above (warn, error, fatal, panic). Default.
+log.SetLevel(log.InfoLevel)
+```
+
+It may be useful to set `log.Level = logrus.DebugLevel` in a debug or verbose
+environment if your application has that.
+
+#### Entries
+
+Besides the fields added with `WithField` or `WithFields` some fields are
+automatically added to all logging events:
+
+1. `time`. The timestamp when the entry was created.
+2. `msg`. The logging message passed to `{Info,Warn,Error,Fatal,Panic}` after
+   the `AddFields` call. E.g. `Failed to send event.`
+3. `level`. The logging level. E.g. `info`.
+
+#### Environments
+
+Logrus has no notion of environment.
+
+If you wish for hooks and formatters to only be used in specific environments,
+you should handle that yourself. For example, if your application has a global
+variable `Environment`, which is a string representation of the environment you
+could do:
+
+```go
+import (
+  log "github.com/Sirupsen/logrus"
+)
+
+init() {
+  // do something here to set environment depending on an environment variable
+  // or command-line flag
+  if Environment == "production" {
+    log.SetFormatter(&log.JSONFormatter{})
+  } else {
+    // The TextFormatter is default, you don't actually have to do this.
+    log.SetFormatter(&log.TextFormatter{})
+  }
+}
+```
+
+This configuration is how `logrus` was intended to be used, but JSON in
+production is mostly only useful if you do log aggregation with tools like
+Splunk or Logstash.
+
+#### Formatters
+
+The built-in logging formatters are:
+
+* `logrus.TextFormatter`. Logs the event in colors if stdout is a tty, otherwise
+  without colors.
+  * *Note:* to force colored output when there is no TTY, set the `ForceColors`
+    field to `true`.  To force no colored output even if there is a TTY  set the
+    `DisableColors` field to `true`. For Windows, see
+    [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
+  * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
+* `logrus.JSONFormatter`. Logs fields as JSON.
+  * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
+
+Third party logging formatters:
+
+* [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
+* [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
+* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
+
+You can define your formatter by implementing the `Formatter` interface,
+requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
+`Fields` type (`map[string]interface{}`) with all your fields as well as the
+default ones (see Entries section above):
+
+```go
+type MyJSONFormatter struct {
+}
+
+log.SetFormatter(new(MyJSONFormatter))
+
+func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
+  // Note this doesn't include Time, Level and Message which are available on
+  // the Entry. Consult `godoc` on information about those fields or read the
+  // source of the official loggers.
+  serialized, err := json.Marshal(entry.Data)
+    if err != nil {
+      return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+    }
+  return append(serialized, '\n'), nil
+}
+```
+
+#### Logger as an `io.Writer`
+
+Logrus can be transformed into an `io.Writer`. That writer is the end of an `io.Pipe` and it is your responsibility to close it.
+
+```go
+w := logger.Writer()
+defer w.Close()
+
+srv := http.Server{
+    // create a stdlib log.Logger that writes to
+    // logrus.Logger.
+    ErrorLog: log.New(w, "", 0),
+}
+```
+
+Each line written to that writer will be printed the usual way, using formatters
+and hooks. The level for those entries is `info`.
+
+This means that we can override the standard library logger easily:
+
+```go
+logger := logrus.New()
+logger.Formatter = &logrus.JSONFormatter{}
+
+// Use logrus for standard log output
+// Note that `log` here references stdlib's log
+// Not logrus imported under the name `log`.
+log.SetOutput(logger.Writer())
+```
+
+#### Rotation
+
+Log rotation is not provided with Logrus. Log rotation should be done by an
+external program (like `logrotate(8)`) that can compress and delete old log
+entries. It should not be a feature of the application-level logger.
+
+#### Tools
+
+| Tool | Description |
+| ---- | ----------- |
+|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
+|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
+
+#### Testing
+
+Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
+
+* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
+* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
+
+```go
+logger, hook := NewNullLogger()
+logger.Error("Hello error")
+
+assert.Equal(1, len(hook.Entries))
+assert.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
+assert.Equal("Hello error", hook.LastEntry().Message)
+
+hook.Reset()
+assert.Nil(hook.LastEntry())
+```
+
+#### Fatal handlers
+
+Logrus can register one or more functions that will be called when any `fatal`
+level message is logged. The registered handlers will be executed before
+logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
+to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
+
+```
+...
+handler := func() {
+  // gracefully shutdown something...
+}
+logrus.RegisterExitHandler(handler)
+...
+```
+
+#### Thread safety
+
+By default Logger is protected by mutex for concurrent writes, this mutex is invoked when calling hooks and writing logs.
+If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
+
+Situation when locking is not needed includes:
+
+* You have no hooks registered, or hooks calling is already thread-safe.
+
+* Writing to logger.Out is already thread-safe, for example:
+
+  1) logger.Out is protected by locks.
+
+  2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
+
+     (Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

vendor/github.com/Sirupsen/logrus/alt_exit.go

@@ -0,0 +1,64 @@
+package logrus
+
+// The following code was sourced and modified from the
+// https://github.com/tebeka/atexit package governed by the following license:
+//
+// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import (
+	"fmt"
+	"os"
+)
+
+var handlers = []func(){}
+
+func runHandler(handler func()) {
+	defer func() {
+		if err := recover(); err != nil {
+			fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
+		}
+	}()
+
+	handler()
+}
+
+func runHandlers() {
+	for _, handler := range handlers {
+		runHandler(handler)
+	}
+}
+
+// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
+func Exit(code int) {
+	runHandlers()
+	os.Exit(code)
+}
+
+// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
+// all handlers. The handlers will also be invoked when any Fatal log entry is
+// made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func RegisterExitHandler(handler func()) {
+	handlers = append(handlers, handler)
+}

vendor/github.com/Sirupsen/logrus/doc.go

@@ -0,0 +1,26 @@
+/*
+Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
+
+
+The simplest way to use Logrus is simply the package-level exported logger:
+
+  package main
+
+  import (
+    log "github.com/Sirupsen/logrus"
+  )
+
+  func main() {
+    log.WithFields(log.Fields{
+      "animal": "walrus",
+      "number": 1,
+      "size":   10,
+    }).Info("A walrus appears")
+  }
+
+Output:
+  time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
+
+For a full guide visit https://github.com/Sirupsen/logrus
+*/
+package logrus

vendor/github.com/Sirupsen/logrus/entry.go

@@ -0,0 +1,275 @@
+package logrus
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"sync"
+	"time"
+)
+
+var bufferPool *sync.Pool
+
+func init() {
+	bufferPool = &sync.Pool{
+		New: func() interface{} {
+			return new(bytes.Buffer)
+		},
+	}
+}
+
+// Defines the key when adding errors using WithError.
+var ErrorKey = "error"
+
+// An entry is the final or intermediate Logrus logging entry. It contains all
+// the fields passed with WithField{,s}. It's finally logged when Debug, Info,
+// Warn, Error, Fatal or Panic is called on it. These objects can be reused and
+// passed around as much as you wish to avoid field duplication.
+type Entry struct {
+	Logger *Logger
+
+	// Contains all the fields set by the user.
+	Data Fields
+
+	// Time at which the log entry was created
+	Time time.Time
+
+	// Level the log entry was logged at: Debug, Info, Warn, Error, Fatal or Panic
+	Level Level
+
+	// Message passed to Debug, Info, Warn, Error, Fatal or Panic
+	Message string
+
+	// When formatter is called in entry.log(), an Buffer may be set to entry
+	Buffer *bytes.Buffer
+}
+
+func NewEntry(logger *Logger) *Entry {
+	return &Entry{
+		Logger: logger,
+		// Default is three fields, give a little extra room
+		Data: make(Fields, 5),
+	}
+}
+
+// Returns the string representation from the reader and ultimately the
+// formatter.
+func (entry *Entry) String() (string, error) {
+	serialized, err := entry.Logger.Formatter.Format(entry)
+	if err != nil {
+		return "", err
+	}
+	str := string(serialized)
+	return str, nil
+}
+
+// Add an error as single field (using the key defined in ErrorKey) to the Entry.
+func (entry *Entry) WithError(err error) *Entry {
+	return entry.WithField(ErrorKey, err)
+}
+
+// Add a single field to the Entry.
+func (entry *Entry) WithField(key string, value interface{}) *Entry {
+	return entry.WithFields(Fields{key: value})
+}
+
+// Add a map of fields to the Entry.
+func (entry *Entry) WithFields(fields Fields) *Entry {
+	data := make(Fields, len(entry.Data)+len(fields))
+	for k, v := range entry.Data {
+		data[k] = v
+	}
+	for k, v := range fields {
+		data[k] = v
+	}
+	return &Entry{Logger: entry.Logger, Data: data}
+}
+
+// This function is not declared with a pointer value because otherwise
+// race conditions will occur when using multiple goroutines
+func (entry Entry) log(level Level, msg string) {
+	var buffer *bytes.Buffer
+	entry.Time = time.Now()
+	entry.Level = level
+	entry.Message = msg
+
+	if err := entry.Logger.Hooks.Fire(level, &entry); err != nil {
+		entry.Logger.mu.Lock()
+		fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
+		entry.Logger.mu.Unlock()
+	}
+	buffer = bufferPool.Get().(*bytes.Buffer)
+	buffer.Reset()
+	defer bufferPool.Put(buffer)
+	entry.Buffer = buffer
+	serialized, err := entry.Logger.Formatter.Format(&entry)
+	entry.Buffer = nil
+	if err != nil {
+		entry.Logger.mu.Lock()
+		fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
+		entry.Logger.mu.Unlock()
+	} else {
+		entry.Logger.mu.Lock()
+		_, err = entry.Logger.Out.Write(serialized)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
+		}
+		entry.Logger.mu.Unlock()
+	}
+
+	// To avoid Entry#log() returning a value that only would make sense for
+	// panic() to use in Entry#Panic(), we avoid the allocation by checking
+	// directly here.
+	if level <= PanicLevel {
+		panic(&entry)
+	}
+}
+
+func (entry *Entry) Debug(args ...interface{}) {
+	if entry.Logger.Level >= DebugLevel {
+		entry.log(DebugLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Print(args ...interface{}) {
+	entry.Info(args...)
+}
+
+func (entry *Entry) Info(args ...interface{}) {
+	if entry.Logger.Level >= InfoLevel {
+		entry.log(InfoLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Warn(args ...interface{}) {
+	if entry.Logger.Level >= WarnLevel {
+		entry.log(WarnLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Warning(args ...interface{}) {
+	entry.Warn(args...)
+}
+
+func (entry *Entry) Error(args ...interface{}) {
+	if entry.Logger.Level >= ErrorLevel {
+		entry.log(ErrorLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Fatal(args ...interface{}) {
+	if entry.Logger.Level >= FatalLevel {
+		entry.log(FatalLevel, fmt.Sprint(args...))
+	}
+	Exit(1)
+}
+
+func (entry *Entry) Panic(args ...interface{}) {
+	if entry.Logger.Level >= PanicLevel {
+		entry.log(PanicLevel, fmt.Sprint(args...))
+	}
+	panic(fmt.Sprint(args...))
+}
+
+// Entry Printf family functions
+
+func (entry *Entry) Debugf(format string, args ...interface{}) {
+	if entry.Logger.Level >= DebugLevel {
+		entry.Debug(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Infof(format string, args ...interface{}) {
+	if entry.Logger.Level >= InfoLevel {
+		entry.Info(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Printf(format string, args ...interface{}) {
+	entry.Infof(format, args...)
+}
+
+func (entry *Entry) Warnf(format string, args ...interface{}) {
+	if entry.Logger.Level >= WarnLevel {
+		entry.Warn(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Warningf(format string, args ...interface{}) {
+	entry.Warnf(format, args...)
+}
+
+func (entry *Entry) Errorf(format string, args ...interface{}) {
+	if entry.Logger.Level >= ErrorLevel {
+		entry.Error(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Fatalf(format string, args ...interface{}) {
+	if entry.Logger.Level >= FatalLevel {
+		entry.Fatal(fmt.Sprintf(format, args...))
+	}
+	Exit(1)
+}
+
+func (entry *Entry) Panicf(format string, args ...interface{}) {
+	if entry.Logger.Level >= PanicLevel {
+		entry.Panic(fmt.Sprintf(format, args...))
+	}
+}
+
+// Entry Println family functions
+
+func (entry *Entry) Debugln(args ...interface{}) {
+	if entry.Logger.Level >= DebugLevel {
+		entry.Debug(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Infoln(args ...interface{}) {
+	if entry.Logger.Level >= InfoLevel {
+		entry.Info(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Println(args ...interface{}) {
+	entry.Infoln(args...)
+}
+
+func (entry *Entry) Warnln(args ...interface{}) {
+	if entry.Logger.Level >= WarnLevel {
+		entry.Warn(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Warningln(args ...interface{}) {
+	entry.Warnln(args...)
+}
+
+func (entry *Entry) Errorln(args ...interface{}) {
+	if entry.Logger.Level >= ErrorLevel {
+		entry.Error(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Fatalln(args ...interface{}) {
+	if entry.Logger.Level >= FatalLevel {
+		entry.Fatal(entry.sprintlnn(args...))
+	}
+	Exit(1)
+}
+
+func (entry *Entry) Panicln(args ...interface{}) {
+	if entry.Logger.Level >= PanicLevel {
+		entry.Panic(entry.sprintlnn(args...))
+	}
+}
+
+// Sprintlnn => Sprint no newline. This is to get the behavior of how
+// fmt.Sprintln where spaces are always added between operands, regardless of
+// their type. Instead of vendoring the Sprintln implementation to spare a
+// string allocation, we do the simplest thing.
+func (entry *Entry) sprintlnn(args ...interface{}) string {
+	msg := fmt.Sprintln(args...)
+	return msg[:len(msg)-1]
+}

vendor/github.com/Sirupsen/logrus/exported.go

@@ -0,0 +1,193 @@
+package logrus
+
+import (
+	"io"
+)
+
+var (
+	// std is the name of the standard logger in stdlib `log`
+	std = New()
+)
+
+func StandardLogger() *Logger {
+	return std
+}
+
+// SetOutput sets the standard logger output.
+func SetOutput(out io.Writer) {
+	std.mu.Lock()
+	defer std.mu.Unlock()
+	std.Out = out
+}
+
+// SetFormatter sets the standard logger formatter.
+func SetFormatter(formatter Formatter) {
+	std.mu.Lock()
+	defer std.mu.Unlock()
+	std.Formatter = formatter
+}
+
+// SetLevel sets the standard logger level.
+func SetLevel(level Level) {
+	std.mu.Lock()
+	defer std.mu.Unlock()
+	std.Level = level
+}
+
+// GetLevel returns the standard logger level.
+func GetLevel() Level {
+	std.mu.Lock()
+	defer std.mu.Unlock()
+	return std.Level
+}
+
+// AddHook adds a hook to the standard logger hooks.
+func AddHook(hook Hook) {
+	std.mu.Lock()
+	defer std.mu.Unlock()
+	std.Hooks.Add(hook)
+}
+
+// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
+func WithError(err error) *Entry {
+	return std.WithField(ErrorKey, err)
+}
+
+// WithField creates an entry from the standard logger and adds a field to
+// it. If you want multiple fields, use `WithFields`.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithField(key string, value interface{}) *Entry {
+	return std.WithField(key, value)
+}
+
+// WithFields creates an entry from the standard logger and adds multiple
+// fields to it. This is simply a helper for `WithField`, invoking it
+// once for each field.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithFields(fields Fields) *Entry {
+	return std.WithFields(fields)
+}
+
+// Debug logs a message at level Debug on the standard logger.
+func Debug(args ...interface{}) {
+	std.Debug(args...)
+}
+
+// Print logs a message at level Info on the standard logger.
+func Print(args ...interface{}) {
+	std.Print(args...)
+}
+
+// Info logs a message at level Info on the standard logger.
+func Info(args ...interface{}) {
+	std.Info(args...)
+}
+
+// Warn logs a message at level Warn on the standard logger.
+func Warn(args ...interface{}) {
+	std.Warn(args...)
+}
+
+// Warning logs a message at level Warn on the standard logger.
+func Warning(args ...interface{}) {
+	std.Warning(args...)
+}
+
+// Error logs a message at level Error on the standard logger.
+func Error(args ...interface{}) {
+	std.Error(args...)
+}
+
+// Panic logs a message at level Panic on the standard logger.
+func Panic(args ...interface{}) {
+	std.Panic(args...)
+}
+
+// Fatal logs a message at level Fatal on the standard logger.
+func Fatal(args ...interface{}) {
+	std.Fatal(args...)
+}
+
+// Debugf logs a message at level Debug on the standard logger.
+func Debugf(format string, args ...interface{}) {
+	std.Debugf(format, args...)
+}
+
+// Printf logs a message at level Info on the standard logger.
+func Printf(format string, args ...interface{}) {
+	std.Printf(format, args...)
+}
+
+// Infof logs a message at level Info on the standard logger.
+func Infof(format string, args ...interface{}) {
+	std.Infof(format, args...)
+}
+
+// Warnf logs a message at level Warn on the standard logger.
+func Warnf(format string, args ...interface{}) {
+	std.Warnf(format, args...)
+}
+
+// Warningf logs a message at level Warn on the standard logger.
+func Warningf(format string, args ...interface{}) {
+	std.Warningf(format, args...)
+}
+
+// Errorf logs a message at level Error on the standard logger.
+func Errorf(format string, args ...interface{}) {
+	std.Errorf(format, args...)
+}
+
+// Panicf logs a message at level Panic on the standard logger.
+func Panicf(format string, args ...interface{}) {
+	std.Panicf(format, args...)
+}
+
+// Fatalf logs a message at level Fatal on the standard logger.
+func Fatalf(format string, args ...interface{}) {
+	std.Fatalf(format, args...)
+}
+
+// Debugln logs a message at level Debug on the standard logger.
+func Debugln(args ...interface{}) {
+	std.Debugln(args...)
+}
+
+// Println logs a message at level Info on the standard logger.
+func Println(args ...interface{}) {
+	std.Println(args...)
+}
+
+// Infoln logs a message at level Info on the standard logger.
+func Infoln(args ...interface{}) {
+	std.Infoln(args...)
+}
+
+// Warnln logs a message at level Warn on the standard logger.
+func Warnln(args ...interface{}) {
+	std.Warnln(args...)
+}
+
+// Warningln logs a message at level Warn on the standard logger.
+func Warningln(args ...interface{}) {
+	std.Warningln(args...)
+}
+
+// Errorln logs a message at level Error on the standard logger.
+func Errorln(args ...interface{}) {
+	std.Errorln(args...)
+}
+
+// Panicln logs a message at level Panic on the standard logger.
+func Panicln(args ...interface{}) {
+	std.Panicln(args...)
+}
+
+// Fatalln logs a message at level Fatal on the standard logger.
+func Fatalln(args ...interface{}) {
+	std.Fatalln(args...)
+}

vendor/github.com/Sirupsen/logrus/formatter.go

@@ -0,0 +1,45 @@
+package logrus
+
+import "time"
+
+const DefaultTimestampFormat = time.RFC3339
+
+// The Formatter interface is used to implement a custom Formatter. It takes an
+// `Entry`. It exposes all the fields, including the default ones:
+//
+// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
+// * `entry.Data["time"]`. The timestamp.
+// * `entry.Data["level"]. The level the entry was logged at.
+//
+// Any additional fields added with `WithField` or `WithFields` are also in
+// `entry.Data`. Format is expected to return an array of bytes which are then
+// logged to `logger.Out`.
+type Formatter interface {
+	Format(*Entry) ([]byte, error)
+}
+
+// This is to not silently overwrite `time`, `msg` and `level` fields when
+// dumping it. If this code wasn't there doing:
+//
+//  logrus.WithField("level", 1).Info("hello")
+//
+// Would just silently drop the user provided level. Instead with this code
+// it'll logged as:
+//
+//  {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
+//
+// It's not exported because it's still using Data in an opinionated way. It's to
+// avoid code duplication between the two default formatters.
+func prefixFieldClashes(data Fields) {
+	if t, ok := data["time"]; ok {
+		data["fields.time"] = t
+	}
+
+	if m, ok := data["msg"]; ok {
+		data["fields.msg"] = m
+	}
+
+	if l, ok := data["level"]; ok {
+		data["fields.level"] = l
+	}
+}

vendor/github.com/Sirupsen/logrus/hooks.go

@@ -0,0 +1,34 @@
+package logrus
+
+// A hook to be fired when logging on the logging levels returned from
+// `Levels()` on your implementation of the interface. Note that this is not
+// fired in a goroutine or a channel with workers, you should handle such
+// functionality yourself if your call is non-blocking and you don't wish for
+// the logging calls for levels returned from `Levels()` to block.
+type Hook interface {
+	Levels() []Level
+	Fire(*Entry) error
+}
+
+// Internal type for storing the hooks on a logger instance.
+type LevelHooks map[Level][]Hook
+
+// Add a hook to an instance of logger. This is called with
+// `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
+func (hooks LevelHooks) Add(hook Hook) {
+	for _, level := range hook.Levels() {
+		hooks[level] = append(hooks[level], hook)
+	}
+}
+
+// Fire all the hooks for the passed level. Used by `entry.log` to fire
+// appropriate hooks for a log entry.
+func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
+	for _, hook := range hooks[level] {
+		if err := hook.Fire(entry); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

vendor/github.com/Sirupsen/logrus/json_formatter.go

@@ -0,0 +1,74 @@
+package logrus
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type fieldKey string
+type FieldMap map[fieldKey]string
+
+const (
+	FieldKeyMsg   = "msg"
+	FieldKeyLevel = "level"
+	FieldKeyTime  = "time"
+)
+
+func (f FieldMap) resolve(key fieldKey) string {
+	if k, ok := f[key]; ok {
+		return k
+	}
+
+	return string(key)
+}
+
+type JSONFormatter struct {
+	// TimestampFormat sets the format used for marshaling timestamps.
+	TimestampFormat string
+
+	// DisableTimestamp allows disabling automatic timestamps in output
+	DisableTimestamp bool
+
+	// FieldMap allows users to customize the names of keys for various fields.
+	// As an example:
+	// formatter := &JSONFormatter{
+	//   	FieldMap: FieldMap{
+	// 		 FieldKeyTime: "@timestamp",
+	// 		 FieldKeyLevel: "@level",
+	// 		 FieldKeyLevel: "@message",
+	//    },
+	// }
+	FieldMap FieldMap
+}
+
+func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
+	data := make(Fields, len(entry.Data)+3)
+	for k, v := range entry.Data {
+		switch v := v.(type) {
+		case error:
+			// Otherwise errors are ignored by `encoding/json`
+			// https://github.com/Sirupsen/logrus/issues/137
+			data[k] = v.Error()
+		default:
+			data[k] = v
+		}
+	}
+	prefixFieldClashes(data)
+
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = DefaultTimestampFormat
+	}
+
+	if !f.DisableTimestamp {
+		data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
+	}
+	data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
+	data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
+
+	serialized, err := json.Marshal(data)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+	}
+	return append(serialized, '\n'), nil
+}

vendor/github.com/Sirupsen/logrus/logger.go

@@ -0,0 +1,308 @@
+package logrus
+
+import (
+	"io"
+	"os"
+	"sync"
+)
+
+type Logger struct {
+	// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
+	// file, or leave it default which is `os.Stderr`. You can also set this to
+	// something more adventorous, such as logging to Kafka.
+	Out io.Writer
+	// Hooks for the logger instance. These allow firing events based on logging
+	// levels and log entries. For example, to send errors to an error tracking
+	// service, log to StatsD or dump the core on fatal errors.
+	Hooks LevelHooks
+	// All log entries pass through the formatter before logged to Out. The
+	// included formatters are `TextFormatter` and `JSONFormatter` for which
+	// TextFormatter is the default. In development (when a TTY is attached) it
+	// logs with colors, but to a file it wouldn't. You can easily implement your
+	// own that implements the `Formatter` interface, see the `README` or included
+	// formatters for examples.
+	Formatter Formatter
+	// The logging level the logger should log at. This is typically (and defaults
+	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
+	// logged. `logrus.Debug` is useful in
+	Level Level
+	// Used to sync writing to the log. Locking is enabled by Default
+	mu MutexWrap
+	// Reusable empty entry
+	entryPool sync.Pool
+}
+
+type MutexWrap struct {
+	lock     sync.Mutex
+	disabled bool
+}
+
+func (mw *MutexWrap) Lock() {
+	if !mw.disabled {
+		mw.lock.Lock()
+	}
+}
+
+func (mw *MutexWrap) Unlock() {
+	if !mw.disabled {
+		mw.lock.Unlock()
+	}
+}
+
+func (mw *MutexWrap) Disable() {
+	mw.disabled = true
+}
+
+// Creates a new logger. Configuration should be set by changing `Formatter`,
+// `Out` and `Hooks` directly on the default logger instance. You can also just
+// instantiate your own:
+//
+//    var log = &Logger{
+//      Out: os.Stderr,
+//      Formatter: new(JSONFormatter),
+//      Hooks: make(LevelHooks),
+//      Level: logrus.DebugLevel,
+//    }
+//
+// It's recommended to make this a global instance called `log`.
+func New() *Logger {
+	return &Logger{
+		Out:       os.Stderr,
+		Formatter: new(TextFormatter),
+		Hooks:     make(LevelHooks),
+		Level:     InfoLevel,
+	}
+}
+
+func (logger *Logger) newEntry() *Entry {
+	entry, ok := logger.entryPool.Get().(*Entry)
+	if ok {
+		return entry
+	}
+	return NewEntry(logger)
+}
+
+func (logger *Logger) releaseEntry(entry *Entry) {
+	logger.entryPool.Put(entry)
+}
+
+// Adds a field to the log entry, note that it doesn't log until you call
+// Debug, Print, Info, Warn, Fatal or Panic. It only creates a log entry.
+// If you want multiple fields, use `WithFields`.
+func (logger *Logger) WithField(key string, value interface{}) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithField(key, value)
+}
+
+// Adds a struct of fields to the log entry. All it does is call `WithField` for
+// each `Field`.
+func (logger *Logger) WithFields(fields Fields) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithFields(fields)
+}
+
+// Add an error as single field to the log entry.  All it does is call
+// `WithError` for the given `error`.
+func (logger *Logger) WithError(err error) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithError(err)
+}
+
+func (logger *Logger) Debugf(format string, args ...interface{}) {
+	if logger.Level >= DebugLevel {
+		entry := logger.newEntry()
+		entry.Debugf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Infof(format string, args ...interface{}) {
+	if logger.Level >= InfoLevel {
+		entry := logger.newEntry()
+		entry.Infof(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Printf(format string, args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Printf(format, args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warnf(format string, args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warningf(format string, args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Errorf(format string, args ...interface{}) {
+	if logger.Level >= ErrorLevel {
+		entry := logger.newEntry()
+		entry.Errorf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatalf(format string, args ...interface{}) {
+	if logger.Level >= FatalLevel {
+		entry := logger.newEntry()
+		entry.Fatalf(format, args...)
+		logger.releaseEntry(entry)
+	}
+	Exit(1)
+}
+
+func (logger *Logger) Panicf(format string, args ...interface{}) {
+	if logger.Level >= PanicLevel {
+		entry := logger.newEntry()
+		entry.Panicf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Debug(args ...interface{}) {
+	if logger.Level >= DebugLevel {
+		entry := logger.newEntry()
+		entry.Debug(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Info(args ...interface{}) {
+	if logger.Level >= InfoLevel {
+		entry := logger.newEntry()
+		entry.Info(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Print(args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Info(args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warn(args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warning(args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Error(args ...interface{}) {
+	if logger.Level >= ErrorLevel {
+		entry := logger.newEntry()
+		entry.Error(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatal(args ...interface{}) {
+	if logger.Level >= FatalLevel {
+		entry := logger.newEntry()
+		entry.Fatal(args...)
+		logger.releaseEntry(entry)
+	}
+	Exit(1)
+}
+
+func (logger *Logger) Panic(args ...interface{}) {
+	if logger.Level >= PanicLevel {
+		entry := logger.newEntry()
+		entry.Panic(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Debugln(args ...interface{}) {
+	if logger.Level >= DebugLevel {
+		entry := logger.newEntry()
+		entry.Debugln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Infoln(args ...interface{}) {
+	if logger.Level >= InfoLevel {
+		entry := logger.newEntry()
+		entry.Infoln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Println(args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Println(args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warnln(args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warningln(args ...interface{}) {
+	if logger.Level >= WarnLevel {
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Errorln(args ...interface{}) {
+	if logger.Level >= ErrorLevel {
+		entry := logger.newEntry()
+		entry.Errorln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatalln(args ...interface{}) {
+	if logger.Level >= FatalLevel {
+		entry := logger.newEntry()
+		entry.Fatalln(args...)
+		logger.releaseEntry(entry)
+	}
+	Exit(1)
+}
+
+func (logger *Logger) Panicln(args ...interface{}) {
+	if logger.Level >= PanicLevel {
+		entry := logger.newEntry()
+		entry.Panicln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+//When file is opened with appending mode, it's safe to
+//write concurrently to a file (within 4k message on Linux).
+//In these cases user can choose to disable the lock.
+func (logger *Logger) SetNoLock() {
+	logger.mu.Disable()
+}

vendor/github.com/Sirupsen/logrus/logrus.go

@@ -0,0 +1,143 @@
+package logrus
+
+import (
+	"fmt"
+	"log"
+	"strings"
+)
+
+// Fields type, used to pass to `WithFields`.
+type Fields map[string]interface{}
+
+// Level type
+type Level uint8
+
+// Convert the Level to a string. E.g. PanicLevel becomes "panic".
+func (level Level) String() string {
+	switch level {
+	case DebugLevel:
+		return "debug"
+	case InfoLevel:
+		return "info"
+	case WarnLevel:
+		return "warning"
+	case ErrorLevel:
+		return "error"
+	case FatalLevel:
+		return "fatal"
+	case PanicLevel:
+		return "panic"
+	}
+
+	return "unknown"
+}
+
+// ParseLevel takes a string level and returns the Logrus log level constant.
+func ParseLevel(lvl string) (Level, error) {
+	switch strings.ToLower(lvl) {
+	case "panic":
+		return PanicLevel, nil
+	case "fatal":
+		return FatalLevel, nil
+	case "error":
+		return ErrorLevel, nil
+	case "warn", "warning":
+		return WarnLevel, nil
+	case "info":
+		return InfoLevel, nil
+	case "debug":
+		return DebugLevel, nil
+	}
+
+	var l Level
+	return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
+}
+
+// A constant exposing all logging levels
+var AllLevels = []Level{
+	PanicLevel,
+	FatalLevel,
+	ErrorLevel,
+	WarnLevel,
+	InfoLevel,
+	DebugLevel,
+}
+
+// These are the different logging levels. You can set the logging level to log
+// on your instance of logger, obtained with `logrus.New()`.
+const (
+	// PanicLevel level, highest level of severity. Logs and then calls panic with the
+	// message passed to Debug, Info, ...
+	PanicLevel Level = iota
+	// FatalLevel level. Logs and then calls `os.Exit(1)`. It will exit even if the
+	// logging level is set to Panic.
+	FatalLevel
+	// ErrorLevel level. Logs. Used for errors that should definitely be noted.
+	// Commonly used for hooks to send errors to an error tracking service.
+	ErrorLevel
+	// WarnLevel level. Non-critical entries that deserve eyes.
+	WarnLevel
+	// InfoLevel level. General operational entries about what's going on inside the
+	// application.
+	InfoLevel
+	// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
+	DebugLevel
+)
+
+// Won't compile if StdLogger can't be realized by a log.Logger
+var (
+	_ StdLogger = &log.Logger{}
+	_ StdLogger = &Entry{}
+	_ StdLogger = &Logger{}
+)
+
+// StdLogger is what your logrus-enabled library should take, that way
+// it'll accept a stdlib logger and a logrus logger. There's no standard
+// interface, this is the closest we get, unfortunately.
+type StdLogger interface {
+	Print(...interface{})
+	Printf(string, ...interface{})
+	Println(...interface{})
+
+	Fatal(...interface{})
+	Fatalf(string, ...interface{})
+	Fatalln(...interface{})
+
+	Panic(...interface{})
+	Panicf(string, ...interface{})
+	Panicln(...interface{})
+}
+
+// The FieldLogger interface generalizes the Entry and Logger types
+type FieldLogger interface {
+	WithField(key string, value interface{}) *Entry
+	WithFields(fields Fields) *Entry
+	WithError(err error) *Entry
+
+	Debugf(format string, args ...interface{})
+	Infof(format string, args ...interface{})
+	Printf(format string, args ...interface{})
+	Warnf(format string, args ...interface{})
+	Warningf(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+	Fatalf(format string, args ...interface{})
+	Panicf(format string, args ...interface{})
+
+	Debug(args ...interface{})
+	Info(args ...interface{})
+	Print(args ...interface{})
+	Warn(args ...interface{})
+	Warning(args ...interface{})
+	Error(args ...interface{})
+	Fatal(args ...interface{})
+	Panic(args ...interface{})
+
+	Debugln(args ...interface{})
+	Infoln(args ...interface{})
+	Println(args ...interface{})
+	Warnln(args ...interface{})
+	Warningln(args ...interface{})
+	Errorln(args ...interface{})
+	Fatalln(args ...interface{})
+	Panicln(args ...interface{})
+}

vendor/github.com/Sirupsen/logrus/terminal_bsd.go

@@ -0,0 +1,10 @@
+// +build darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
+
+package logrus
+
+import "syscall"
+
+const ioctlReadTermios = syscall.TIOCGETA
+
+type Termios syscall.Termios

vendor/github.com/Sirupsen/logrus/terminal_linux.go

@@ -0,0 +1,14 @@
+// Based on ssh/terminal:
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !appengine
+
+package logrus
+
+import "syscall"
+
+const ioctlReadTermios = syscall.TCGETS
+
+type Termios syscall.Termios

vendor/github.com/Sirupsen/logrus/terminal_notwindows.go

@@ -0,0 +1,28 @@
+// Based on ssh/terminal:
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
+
+package logrus
+
+import (
+	"io"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+// IsTerminal returns true if stderr's file descriptor is a terminal.
+func IsTerminal(f io.Writer) bool {
+	var termios Termios
+	switch v := f.(type) {
+	case *os.File:
+		_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(v.Fd()), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
+		return err == 0
+	default:
+		return false
+	}
+}

vendor/github.com/Sirupsen/logrus/terminal_solaris.go

@@ -0,0 +1,21 @@
+// +build solaris,!appengine
+
+package logrus
+
+import (
+	"io"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(f io.Writer) bool {
+	switch v := f.(type) {
+	case *os.File:
+		_, err := unix.IoctlGetTermios(int(v.Fd()), unix.TCGETA)
+		return err == nil
+	default:
+		return false
+	}
+}

vendor/github.com/Sirupsen/logrus/terminal_windows.go

@@ -0,0 +1,33 @@
+// Based on ssh/terminal:
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows,!appengine
+
+package logrus
+
+import (
+	"io"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+var kernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+var (
+	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
+)
+
+// IsTerminal returns true if stderr's file descriptor is a terminal.
+func IsTerminal(f io.Writer) bool {
+	switch v := f.(type) {
+	case *os.File:
+		var st uint32
+		r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(v.Fd()), uintptr(unsafe.Pointer(&st)), 0)
+		return r != 0 && e == 0
+	default:
+		return false
+	}
+}

vendor/github.com/Sirupsen/logrus/text_formatter.go

@@ -0,0 +1,189 @@
+package logrus
+
+import (
+	"bytes"
+	"fmt"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	nocolor = 0
+	red     = 31
+	green   = 32
+	yellow  = 33
+	blue    = 34
+	gray    = 37
+)
+
+var (
+	baseTimestamp time.Time
+)
+
+func init() {
+	baseTimestamp = time.Now()
+}
+
+type TextFormatter struct {
+	// Set to true to bypass checking for a TTY before outputting colors.
+	ForceColors bool
+
+	// Force disabling colors.
+	DisableColors bool
+
+	// Disable timestamp logging. useful when output is redirected to logging
+	// system that already adds timestamps.
+	DisableTimestamp bool
+
+	// Enable logging the full timestamp when a TTY is attached instead of just
+	// the time passed since beginning of execution.
+	FullTimestamp bool
+
+	// TimestampFormat to use for display when a full timestamp is printed
+	TimestampFormat string
+
+	// The fields are sorted by default for a consistent output. For applications
+	// that log extremely frequently and don't use the JSON formatter this may not
+	// be desired.
+	DisableSorting bool
+
+	// QuoteEmptyFields will wrap empty fields in quotes if true
+	QuoteEmptyFields bool
+
+	// QuoteCharacter can be set to the override the default quoting character "
+	// with something else. For example: ', or `.
+	QuoteCharacter string
+
+	// Whether the logger's out is to a terminal
+	isTerminal bool
+
+	sync.Once
+}
+
+func (f *TextFormatter) init(entry *Entry) {
+	if len(f.QuoteCharacter) == 0 {
+		f.QuoteCharacter = "\""
+	}
+	if entry.Logger != nil {
+		f.isTerminal = IsTerminal(entry.Logger.Out)
+	}
+}
+
+func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
+	var b *bytes.Buffer
+	keys := make([]string, 0, len(entry.Data))
+	for k := range entry.Data {
+		keys = append(keys, k)
+	}
+
+	if !f.DisableSorting {
+		sort.Strings(keys)
+	}
+	if entry.Buffer != nil {
+		b = entry.Buffer
+	} else {
+		b = &bytes.Buffer{}
+	}
+
+	prefixFieldClashes(entry.Data)
+
+	f.Do(func() { f.init(entry) })
+
+	isColored := (f.ForceColors || f.isTerminal) && !f.DisableColors
+
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = DefaultTimestampFormat
+	}
+	if isColored {
+		f.printColored(b, entry, keys, timestampFormat)
+	} else {
+		if !f.DisableTimestamp {
+			f.appendKeyValue(b, "time", entry.Time.Format(timestampFormat))
+		}
+		f.appendKeyValue(b, "level", entry.Level.String())
+		if entry.Message != "" {
+			f.appendKeyValue(b, "msg", entry.Message)
+		}
+		for _, key := range keys {
+			f.appendKeyValue(b, key, entry.Data[key])
+		}
+	}
+
+	b.WriteByte('\n')
+	return b.Bytes(), nil
+}
+
+func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, timestampFormat string) {
+	var levelColor int
+	switch entry.Level {
+	case DebugLevel:
+		levelColor = gray
+	case WarnLevel:
+		levelColor = yellow
+	case ErrorLevel, FatalLevel, PanicLevel:
+		levelColor = red
+	default:
+		levelColor = blue
+	}
+
+	levelText := strings.ToUpper(entry.Level.String())[0:4]
+
+	if f.DisableTimestamp {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m %-44s ", levelColor, levelText, entry.Message)
+	} else if !f.FullTimestamp {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d] %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), entry.Message)
+	} else {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s] %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), entry.Message)
+	}
+	for _, k := range keys {
+		v := entry.Data[k]
+		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
+		f.appendValue(b, v)
+	}
+}
+
+func (f *TextFormatter) needsQuoting(text string) bool {
+	if f.QuoteEmptyFields && len(text) == 0 {
+		return true
+	}
+	for _, ch := range text {
+		if !((ch >= 'a' && ch <= 'z') ||
+			(ch >= 'A' && ch <= 'Z') ||
+			(ch >= '0' && ch <= '9') ||
+			ch == '-' || ch == '.') {
+			return true
+		}
+	}
+	return false
+}
+
+func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
+
+	b.WriteString(key)
+	b.WriteByte('=')
+	f.appendValue(b, value)
+	b.WriteByte(' ')
+}
+
+func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
+	switch value := value.(type) {
+	case string:
+		if !f.needsQuoting(value) {
+			b.WriteString(value)
+		} else {
+			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, value, f.QuoteCharacter)
+		}
+	case error:
+		errmsg := value.Error()
+		if !f.needsQuoting(errmsg) {
+			b.WriteString(errmsg)
+		} else {
+			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, errmsg, f.QuoteCharacter)
+		}
+	default:
+		fmt.Fprint(b, value)
+	}
+}

vendor/github.com/Sirupsen/logrus/writer.go

@@ -0,0 +1,62 @@
+package logrus
+
+import (
+	"bufio"
+	"io"
+	"runtime"
+)
+
+func (logger *Logger) Writer() *io.PipeWriter {
+	return logger.WriterLevel(InfoLevel)
+}
+
+func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
+	return NewEntry(logger).WriterLevel(level)
+}
+
+func (entry *Entry) Writer() *io.PipeWriter {
+	return entry.WriterLevel(InfoLevel)
+}
+
+func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
+	reader, writer := io.Pipe()
+
+	var printFunc func(args ...interface{})
+
+	switch level {
+	case DebugLevel:
+		printFunc = entry.Debug
+	case InfoLevel:
+		printFunc = entry.Info
+	case WarnLevel:
+		printFunc = entry.Warn
+	case ErrorLevel:
+		printFunc = entry.Error
+	case FatalLevel:
+		printFunc = entry.Fatal
+	case PanicLevel:
+		printFunc = entry.Panic
+	default:
+		printFunc = entry.Print
+	}
+
+	go entry.writerScanner(reader, printFunc)
+	runtime.SetFinalizer(writer, writerFinalizer)
+
+	return writer
+}
+
+func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
+	scanner := bufio.NewScanner(reader)
+	for scanner.Scan() {
+		printFunc(scanner.Text())
+	}
+	if err := scanner.Err(); err != nil {
+		entry.Errorf("Error while reading from Writer: %s", err)
+	}
+	reader.Close()
+}
+
+func writerFinalizer(writer *io.PipeWriter) {
+	writer.Close()
+}

vendor/github.com/creack/goselect/Dockerfile

@@ -0,0 +1,5 @@
+FROM		google/golang:stable
+MAINTAINER	Guillaume J. Charmes <guillaume@charmes.net>
+CMD		/tmp/a.out
+ADD		.	  /src
+RUN		cd /src && go build -o /tmp/a.out

vendor/github.com/creack/goselect/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Guillaume J. Charmes
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

vendor/github.com/creack/goselect/README.md

@@ -0,0 +1,30 @@
+# go-select
+
+select(2) implementation in Go
+
+## Supported platforms
+
+|               | 386 | amd64 | arm | arm64 |
+|---------------|-----|-------|-----|-------|
+| **linux**     | yes | yes   | yes | yes   |
+| **darwin**    | yes | yes   | n/a | ??    |
+| **freebsd**   | yes | yes   | yes | ??    |
+| **openbsd**   | yes | yes   | yes | ??    |
+| **netbsd**    | yes | yes   | yes | ??    |
+| **dragonfly** | n/a | yes   | n/a | ??    |
+| **solaris**   | n/a | no    | n/a | ??    |
+| **plan9**     | no  | no    | n/a | ??    |
+| **windows**   | yes | yes   | n/a | ??    |
+| **android**   | n/a | n/a   | no  | ??    |
+
+*n/a: platform not supported by Go
+
+Go on `plan9` and `solaris` do not implement `syscall.Select` not `syscall.SYS_SELECT`.
+
+## Cross compile
+
+Using davecheney's https://github.com/davecheney/golang-crosscompile
+
+```
+export PLATFORMS="darwin/386 darwin/amd64 freebsd/386 freebsd/amd64 freebsd/arm linux/386 linux/amd64 linux/arm windows/386 windows/amd64 openbsd/386 openbsd/amd64 netbsd/386 netbsd/amd64 dragonfly/amd64 plan9/386 plan9/amd64 solaris/amd64"
+```

vendor/github.com/creack/goselect/fdset.go

@@ -0,0 +1,33 @@
+// +build !freebsd,!windows,!plan9
+
+package goselect
+
+import "syscall"
+
+const FD_SETSIZE = syscall.FD_SETSIZE
+
+// FDSet wraps syscall.FdSet with convenience methods
+type FDSet syscall.FdSet
+
+// Set adds the fd to the set
+func (fds *FDSet) Set(fd uintptr) {
+	fds.Bits[fd/NFDBITS] |= (1 << (fd % NFDBITS))
+}
+
+// Clear remove the fd from the set
+func (fds *FDSet) Clear(fd uintptr) {
+	fds.Bits[fd/NFDBITS] &^= (1 << (fd % NFDBITS))
+}
+
+// IsSet check if the given fd is set
+func (fds *FDSet) IsSet(fd uintptr) bool {
+	return fds.Bits[fd/NFDBITS]&(1<<(fd%NFDBITS)) != 0
+}
+
+// Keep a null set to avoid reinstatiation
+var nullFdSet = &FDSet{}
+
+// Zero empties the Set
+func (fds *FDSet) Zero() {
+	copy(fds.Bits[:], (nullFdSet).Bits[:])
+}

vendor/github.com/creack/goselect/fdset_32.go

@@ -0,0 +1,10 @@
+// +build darwin openbsd netbsd 386 arm
+
+package goselect
+
+// darwin, netbsd and openbsd uses uint32 on both amd64 and 386
+
+const (
+	// NFDBITS is the amount of bits per mask
+	NFDBITS = 4 * 8
+)

vendor/github.com/creack/goselect/fdset_64.go

@@ -0,0 +1,11 @@
+// +build !darwin,!netbsd,!openbsd
+// +build amd64 arm64
+
+package goselect
+
+// darwin, netbsd and openbsd uses uint32 on both amd64 and 386
+
+const (
+	// NFDBITS is the amount of bits per mask
+	NFDBITS = 8 * 8
+)

vendor/github.com/creack/goselect/fdset_doc.go

@@ -0,0 +1,93 @@
+package goselect
+
+/**
+From: XCode's MacOSX10.10.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/select.h
+--
+// darwin/amd64 / 386
+sizeof(__int32_t) == 4
+--
+
+typedef __int32_t __fd_mask;
+
+#define	FD_SETSIZE      1024
+#define __NFDBITS	(sizeof(__fd_mask) * 8)
+#define	__howmany(x, y)	((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1))
+
+typedef	struct  fd_set {
+    __fd_mask   fds_bits[__howmany(__FD_SETSIZE, __NFDBITS)];
+}               fd_set;
+
+#define __FD_MASK(n)   ((__fd_mask)1 << ((n) % __NFDBITS))
+#define	FD_SET(n, p)    ((p)->fds_bits[(n)/__NFDBITS] |=  __FD_MASK(n))
+#define	FD_CLR(n, p)    ((p)->fds_bits[(n)/__NFDBITS] &= ~__FD_MASK(n))
+#define FD_ISSET(n, p) (((p)->fds_bits[(n)/__NFDBITS] &   __FD_MASK(n)) != 0)
+*/
+
+/**
+From: /usr/include/i386-linux-gnu/sys/select.h
+--
+// linux/i686
+sizeof(long int) == 4
+--
+
+typedef long int __fd_mask;
+
+#define FD_SETSIZE      1024
+#define __NFDBITS       (sizeof(__fd_mask) * 8)
+
+
+typedef struct  fd_set {
+    __fd_mask   fds_bits[__FD_SETSIZE / __NFDBITS];
+}               fd_set;
+
+#define __FD_MASK(n)   ((__fd_mask)1 << ((n) % __NFDBITS))
+#define FD_SET(n, p)    ((p)->fds_bits[(n)/__NFDBITS] |=  __FD_MASK(n))
+#define FD_CLR(n, p)    ((p)->fds_bits[(n)/__NFDBITS] &= ~__FD_MASK(n))
+#define FD_ISSET(n, p) (((p)->fds_bits[(n)/__NFDBITS] &   __FD_MASK(n)) != 0)
+*/
+
+/**
+From: /usr/include/x86_64-linux-gnu/sys/select.h
+--
+// linux/amd64
+sizeof(long int) == 8
+--
+
+typedef long int __fd_mask;
+
+#define FD_SETSIZE      1024
+#define __NFDBITS       (sizeof(__fd_mask) * 8)
+
+
+typedef struct  fd_set {
+    __fd_mask   fds_bits[__FD_SETSIZE / __NFDBITS];
+}               fd_set;
+
+#define __FD_MASK(n)   ((__fd_mask)1 << ((n) % __NFDBITS))
+#define FD_SET(n, p)    ((p)->fds_bits[(n)/__NFDBITS] |=  __FD_MASK(n))
+#define FD_CLR(n, p)    ((p)->fds_bits[(n)/__NFDBITS] &= ~__FD_MASK(n))
+#define FD_ISSET(n, p) (((p)->fds_bits[(n)/__NFDBITS] &   __FD_MASK(n)) != 0)
+*/
+
+/**
+From: /usr/include/sys/select.h
+--
+// freebsd/amd64
+sizeof(unsigned long) == 8
+--
+
+typedef unsigned long   __fd_mask;
+
+#define FD_SETSIZE      1024U
+#define __NFDBITS       (sizeof(__fd_mask) * 8)
+#define _howmany(x, y)  (((x) + ((y) - 1)) / (y))
+
+typedef struct  fd_set {
+    __fd_mask   fds_bits[_howmany(FD_SETSIZE, __NFDBITS)];
+}               fd_set;
+
+#define __FD_MASK(n)   ((__fd_mask)1 << ((n) % __NFDBITS))
+#define FD_SET(n, p)    ((p)->fds_bits[(n)/__NFDBITS] |=  __FD_MASK(n))
+#define FD_CLR(n, p)    ((p)->fds_bits[(n)/__NFDBITS] &= ~__FD_MASK(n))
+#define FD_ISSET(n, p) (((p)->fds_bits[(n)/__NFDBITS] &   __FD_MASK(n)) != 0)
+*/

vendor/github.com/creack/goselect/fdset_freebsd.go

@@ -0,0 +1,33 @@
+// +build freebsd
+
+package goselect
+
+import "syscall"
+
+const FD_SETSIZE = syscall.FD_SETSIZE
+
+// FDSet wraps syscall.FdSet with convenience methods
+type FDSet syscall.FdSet
+
+// Set adds the fd to the set
+func (fds *FDSet) Set(fd uintptr) {
+	fds.X__fds_bits[fd/NFDBITS] |= (1 << (fd % NFDBITS))
+}
+
+// Clear remove the fd from the set
+func (fds *FDSet) Clear(fd uintptr) {
+	fds.X__fds_bits[fd/NFDBITS] &^= (1 << (fd % NFDBITS))
+}
+
+// IsSet check if the given fd is set
+func (fds *FDSet) IsSet(fd uintptr) bool {
+	return fds.X__fds_bits[fd/NFDBITS]&(1<<(fd%NFDBITS)) != 0
+}
+
+// Keep a null set to avoid reinstatiation
+var nullFdSet = &FDSet{}
+
+// Zero empties the Set
+func (fds *FDSet) Zero() {
+	copy(fds.X__fds_bits[:], (nullFdSet).X__fds_bits[:])
+}

vendor/github.com/creack/goselect/fdset_unsupported.go

@@ -0,0 +1,20 @@
+// +build plan9
+
+package goselect
+
+const FD_SETSIZE = 0
+
+// FDSet wraps syscall.FdSet with convenience methods
+type FDSet struct{}
+
+// Set adds the fd to the set
+func (fds *FDSet) Set(fd uintptr) {}
+
+// Clear remove the fd from the set
+func (fds *FDSet) Clear(fd uintptr) {}
+
+// IsSet check if the given fd is set
+func (fds *FDSet) IsSet(fd uintptr) bool { return false }
+
+// Zero empties the Set
+func (fds *FDSet) Zero() {}

vendor/github.com/creack/goselect/fdset_windows.go

@@ -0,0 +1,57 @@
+// +build windows
+
+package goselect
+
+import "syscall"
+
+const FD_SETSIZE = 64
+
+// FDSet extracted from mingw libs source code
+type FDSet struct {
+	fd_count uint
+	fd_array [FD_SETSIZE]uintptr
+}
+
+// Set adds the fd to the set
+func (fds *FDSet) Set(fd uintptr) {
+	var i uint
+	for i = 0; i < fds.fd_count; i++ {
+		if fds.fd_array[i] == fd {
+			break
+		}
+	}
+	if i == fds.fd_count {
+		if fds.fd_count < FD_SETSIZE {
+			fds.fd_array[i] = fd
+			fds.fd_count++
+		}
+	}
+}
+
+// Clear remove the fd from the set
+func (fds *FDSet) Clear(fd uintptr) {
+	var i uint
+	for i = 0; i < fds.fd_count; i++ {
+		if fds.fd_array[i] == fd {
+			for i < fds.fd_count-1 {
+				fds.fd_array[i] = fds.fd_array[i+1]
+				i++
+			}
+			fds.fd_count--
+			break
+		}
+	}
+}
+
+// IsSet check if the given fd is set
+func (fds *FDSet) IsSet(fd uintptr) bool {
+	if isset, err := __WSAFDIsSet(syscall.Handle(fd), fds); err == nil && isset != 0 {
+		return true
+	}
+	return false
+}
+
+// Zero empties the Set
+func (fds *FDSet) Zero() {
+	fds.fd_count = 0
+}

vendor/github.com/creack/goselect/select.go

@@ -0,0 +1,28 @@
+package goselect
+
+import (
+	"syscall"
+	"time"
+)
+
+// Select wraps syscall.Select with Go types
+func Select(n int, r, w, e *FDSet, timeout time.Duration) error {
+	var timeval *syscall.Timeval
+	if timeout >= 0 {
+		t := syscall.NsecToTimeval(timeout.Nanoseconds())
+		timeval = &t
+	}
+
+	return sysSelect(n, r, w, e, timeval)
+}
+
+// RetrySelect wraps syscall.Select with Go types, and retries a number of times, with a given retryDelay.
+func RetrySelect(n int, r, w, e *FDSet, timeout time.Duration, retries int, retryDelay time.Duration) (err error) {
+	for i := 0; i < retries; i++ {
+		if err = Select(n, r, w, e, timeout); err != syscall.EINTR {
+			return err
+		}
+		time.Sleep(retryDelay)
+	}
+	return err
+}

vendor/github.com/creack/goselect/select_linux.go

@@ -0,0 +1,10 @@
+// +build linux
+
+package goselect
+
+import "syscall"
+
+func sysSelect(n int, r, w, e *FDSet, timeout *syscall.Timeval) error {
+	_, err := syscall.Select(n, (*syscall.FdSet)(r), (*syscall.FdSet)(w), (*syscall.FdSet)(e), timeout)
+	return err
+}

vendor/github.com/creack/goselect/select_other.go

@@ -0,0 +1,9 @@
+// +build !linux,!windows,!plan9,!solaris
+
+package goselect
+
+import "syscall"
+
+func sysSelect(n int, r, w, e *FDSet, timeout *syscall.Timeval) error {
+	return syscall.Select(n, (*syscall.FdSet)(r), (*syscall.FdSet)(w), (*syscall.FdSet)(e), timeout)
+}

vendor/github.com/creack/goselect/select_unsupported.go

@@ -0,0 +1,16 @@
+// +build plan9 solaris
+
+package goselect
+
+import (
+	"fmt"
+	"runtime"
+	"syscall"
+)
+
+// ErrUnsupported .
+var ErrUnsupported = fmt.Errorf("Platofrm %s/%s unsupported", runtime.GOOS, runtime.GOARCH)
+
+func sysSelect(n int, r, w, e *FDSet, timeout *syscall.Timeval) error {
+	return ErrUnsupported
+}

vendor/github.com/creack/goselect/select_windows.go

@@ -0,0 +1,13 @@
+// +build windows
+
+package goselect
+
+import "syscall"
+
+//sys _select(nfds int, readfds *FDSet, writefds *FDSet, exceptfds *FDSet, timeout *syscall.Timeval) (total int, err error) = ws2_32.select
+//sys __WSAFDIsSet(handle syscall.Handle, fdset *FDSet) (isset int, err error) = ws2_32.__WSAFDIsSet
+
+func sysSelect(n int, r, w, e *FDSet, timeout *syscall.Timeval) error {
+	_, err := _select(n, r, w, e, timeout)
+	return err
+}

vendor/github.com/creack/goselect/test_crosscompile.sh

@@ -0,0 +1,17 @@
+export GOOS=linux;   export GOARCH=arm;   echo $GOOS/$GOARCH; go build
+export GOOS=linux;   export GOARCH=arm64; echo $GOOS/$GOARCH; go build
+export GOOS=linux;   export GOARCH=amd64; echo $GOOS/$GOARCH; go build
+export GOOS=linux;   export GOARCH=386;   echo $GOOS/$GOARCH; go build
+export GOOS=darwin;  export GOARCH=arm;   echo $GOOS/$GOARCH; go build
+export GOOS=darwin;  export GOARCH=arm64; echo $GOOS/$GOARCH; go build
+export GOOS=darwin;  export GOARCH=amd64; echo $GOOS/$GOARCH; go build
+export GOOS=darwin;  export GOARCH=386;   echo $GOOS/$GOARCH; go build
+export GOOS=freebsd; export GOARCH=arm;   echo $GOOS/$GOARCH; go build
+export GOOS=freebsd; export GOARCH=amd64; echo $GOOS/$GOARCH; go build
+export GOOS=freebsd; export GOARCH=386;   echo $GOOS/$GOARCH; go build
+export GOOS=openbsd; export GOARCH=arm;   echo $GOOS/$GOARCH; go build
+export GOOS=openbsd; export GOARCH=amd64; echo $GOOS/$GOARCH; go build
+export GOOS=openbsd; export GOARCH=386;   echo $GOOS/$GOARCH; go build
+export GOOS=netbsd;  export GOARCH=arm;   echo $GOOS/$GOARCH; go build
+export GOOS=netbsd;  export GOARCH=amd64; echo $GOOS/$GOARCH; go build
+export GOOS=netbsd;  export GOARCH=386;   echo $GOOS/$GOARCH; go build

vendor/github.com/creack/goselect/zselect_windows.go

@@ -0,0 +1,41 @@
+// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT
+
+package goselect
+
+import "unsafe"
+import "syscall"
+
+var _ unsafe.Pointer
+
+var (
+	modws2_32 = syscall.NewLazyDLL("ws2_32.dll")
+
+	procselect       = modws2_32.NewProc("select")
+	proc__WSAFDIsSet = modws2_32.NewProc("__WSAFDIsSet")
+)
+
+func _select(nfds int, readfds *FDSet, writefds *FDSet, exceptfds *FDSet, timeout *syscall.Timeval) (total int, err error) {
+	r0, _, e1 := syscall.Syscall6(procselect.Addr(), 5, uintptr(nfds), uintptr(unsafe.Pointer(readfds)), uintptr(unsafe.Pointer(writefds)), uintptr(unsafe.Pointer(exceptfds)), uintptr(unsafe.Pointer(timeout)), 0)
+	total = int(r0)
+	if total == 0 {
+		if e1 != 0 {
+			err = error(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func __WSAFDIsSet(handle syscall.Handle, fdset *FDSet) (isset int, err error) {
+	r0, _, e1 := syscall.Syscall(proc__WSAFDIsSet.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(fdset)), 0)
+	isset = int(r0)
+	if isset == 0 {
+		if e1 != 0 {
+			err = error(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}

vendor/github.com/docker/docker/LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2013-2017 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/docker/docker/NOTICE

@@ -0,0 +1,19 @@
+Docker
+Copyright 2012-2017 Docker, Inc.
+
+This product includes software developed at Docker, Inc. (https://www.docker.com).
+
+This product contains software (https://github.com/kr/pty) developed
+by Keith Rarick, licensed under the MIT License.
+
+The following is courtesy of our legal counsel:
+
+
+Use and transfer of Docker may be subject to certain restrictions by the
+United States and other governments.
+It is your responsibility to ensure that your use and/or transfer does not
+violate applicable laws.
+
+For more information, please see https://www.bis.doc.gov
+
+See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/docker/docker/pkg/namesgenerator/names-generator.go

@@ -0,0 +1,608 @@
+package namesgenerator
+
+import (
+	"fmt"
+
+	"github.com/docker/docker/pkg/random"
+)
+
+var (
+	left = [...]string{
+		"admiring",
+		"adoring",
+		"affectionate",
+		"agitated",
+		"amazing",
+		"angry",
+		"awesome",
+		"blissful",
+		"boring",
+		"brave",
+		"clever",
+		"cocky",
+		"compassionate",
+		"competent",
+		"condescending",
+		"confident",
+		"cranky",
+		"dazzling",
+		"determined",
+		"distracted",
+		"dreamy",
+		"eager",
+		"ecstatic",
+		"elastic",
+		"elated",
+		"elegant",
+		"eloquent",
+		"epic",
+		"fervent",
+		"festive",
+		"flamboyant",
+		"focused",
+		"friendly",
+		"frosty",
+		"gallant",
+		"gifted",
+		"goofy",
+		"gracious",
+		"happy",
+		"hardcore",
+		"heuristic",
+		"hopeful",
+		"hungry",
+		"infallible",
+		"inspiring",
+		"jolly",
+		"jovial",
+		"keen",
+		"kind",
+		"laughing",
+		"loving",
+		"lucid",
+		"mystifying",
+		"modest",
+		"musing",
+		"naughty",
+		"nervous",
+		"nifty",
+		"nostalgic",
+		"objective",
+		"optimistic",
+		"peaceful",
+		"pedantic",
+		"pensive",
+		"practical",
+		"priceless",
+		"quirky",
+		"quizzical",
+		"relaxed",
+		"reverent",
+		"romantic",
+		"sad",
+		"serene",
+		"sharp",
+		"silly",
+		"sleepy",
+		"stoic",
+		"stupefied",
+		"suspicious",
+		"tender",
+		"thirsty",
+		"trusting",
+		"unruffled",
+		"upbeat",
+		"vibrant",
+		"vigilant",
+		"vigorous",
+		"wizardly",
+		"wonderful",
+		"xenodochial",
+		"youthful",
+		"zealous",
+		"zen",
+	}
+
+	// Docker, starting from 0.7.x, generates names from notable scientists and hackers.
+	// Please, for any amazing man that you add to the list, consider adding an equally amazing woman to it, and vice versa.
+	right = [...]string{
+		// Muhammad ibn Jābir al-Ḥarrānī al-Battānī was a founding father of astronomy. https://en.wikipedia.org/wiki/Mu%E1%B8%A5ammad_ibn_J%C4%81bir_al-%E1%B8%A4arr%C4%81n%C4%AB_al-Batt%C4%81n%C4%AB
+		"albattani",
+
+		// Frances E. Allen, became the first female IBM Fellow in 1989. In 2006, she became the first female recipient of the ACM's Turing Award. https://en.wikipedia.org/wiki/Frances_E._Allen
+		"allen",
+
+		// June Almeida - Scottish virologist who took the first pictures of the rubella virus - https://en.wikipedia.org/wiki/June_Almeida
+		"almeida",
+
+		// Maria Gaetana Agnesi - Italian mathematician, philosopher, theologian and humanitarian. She was the first woman to write a mathematics handbook and the first woman appointed as a Mathematics Professor at a University. https://en.wikipedia.org/wiki/Maria_Gaetana_Agnesi
+		"agnesi",
+
+		// Archimedes was a physicist, engineer and mathematician who invented too many things to list them here. https://en.wikipedia.org/wiki/Archimedes
+		"archimedes",
+
+		// Maria Ardinghelli - Italian translator, mathematician and physicist - https://en.wikipedia.org/wiki/Maria_Ardinghelli
+		"ardinghelli",
+
+		// Aryabhata - Ancient Indian mathematician-astronomer during 476-550 CE https://en.wikipedia.org/wiki/Aryabhata
+		"aryabhata",
+
+		// Wanda Austin - Wanda Austin is the President and CEO of The Aerospace Corporation, a leading architect for the US security space programs. https://en.wikipedia.org/wiki/Wanda_Austin
+		"austin",
+
+		// Charles Babbage invented the concept of a programmable computer. https://en.wikipedia.org/wiki/Charles_Babbage.
+		"babbage",
+
+		// Stefan Banach - Polish mathematician, was one of the founders of modern functional analysis. https://en.wikipedia.org/wiki/Stefan_Banach
+		"banach",
+
+		// John Bardeen co-invented the transistor - https://en.wikipedia.org/wiki/John_Bardeen
+		"bardeen",
+
+		// Jean Bartik, born Betty Jean Jennings, was one of the original programmers for the ENIAC computer. https://en.wikipedia.org/wiki/Jean_Bartik
+		"bartik",
+
+		// Laura Bassi, the world's first female professor https://en.wikipedia.org/wiki/Laura_Bassi
+		"bassi",
+
+		// Hugh Beaver, British engineer, founder of the Guinness Book of World Records https://en.wikipedia.org/wiki/Hugh_Beaver
+		"beaver",
+
+		// Alexander Graham Bell - an eminent Scottish-born scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone - https://en.wikipedia.org/wiki/Alexander_Graham_Bell
+		"bell",
+
+		// Karl Friedrich Benz - a German automobile engineer. Inventor of the first practical motorcar. https://en.wikipedia.org/wiki/Karl_Benz
+		"benz",
+
+		// Homi J Bhabha - was an Indian nuclear physicist, founding director, and professor of physics at the Tata Institute of Fundamental Research. Colloquially known as "father of Indian nuclear programme"- https://en.wikipedia.org/wiki/Homi_J._Bhabha
+		"bhabha",
+
+		// Bhaskara II - Ancient Indian mathematician-astronomer whose work on calculus predates Newton and Leibniz by over half a millennium - https://en.wikipedia.org/wiki/Bh%C4%81skara_II#Calculus
+		"bhaskara",
+
+		// Elizabeth Blackwell - American doctor and first American woman to receive a medical degree - https://en.wikipedia.org/wiki/Elizabeth_Blackwell
+		"blackwell",
+
+		// Niels Bohr is the father of quantum theory. https://en.wikipedia.org/wiki/Niels_Bohr.
+		"bohr",
+
+		// Kathleen Booth, she's credited with writing the first assembly language. https://en.wikipedia.org/wiki/Kathleen_Booth
+		"booth",
+
+		// Anita Borg - Anita Borg was the founding director of the Institute for Women and Technology (IWT). https://en.wikipedia.org/wiki/Anita_Borg
+		"borg",
+
+		// Satyendra Nath Bose - He provided the foundation for Bose–Einstein statistics and the theory of the Bose–Einstein condensate. - https://en.wikipedia.org/wiki/Satyendra_Nath_Bose
+		"bose",
+
+		// Evelyn Boyd Granville - She was one of the first African-American woman to receive a Ph.D. in mathematics; she earned it in 1949 from Yale University. https://en.wikipedia.org/wiki/Evelyn_Boyd_Granville
+		"boyd",
+
+		// Brahmagupta - Ancient Indian mathematician during 598-670 CE who gave rules to compute with zero - https://en.wikipedia.org/wiki/Brahmagupta#Zero
+		"brahmagupta",
+
+		// Walter Houser Brattain co-invented the transistor - https://en.wikipedia.org/wiki/Walter_Houser_Brattain
+		"brattain",
+
+		// Emmett Brown invented time travel. https://en.wikipedia.org/wiki/Emmett_Brown (thanks Brian Goff)
+		"brown",
+
+		// Rachel Carson - American marine biologist and conservationist, her book Silent Spring and other writings are credited with advancing the global environmental movement. https://en.wikipedia.org/wiki/Rachel_Carson
+		"carson",
+
+		// Subrahmanyan Chandrasekhar - Astrophysicist known for his mathematical theory on different stages and evolution in structures of the stars. He has won nobel prize for physics - https://en.wikipedia.org/wiki/Subrahmanyan_Chandrasekhar
+		"chandrasekhar",
+
+		//Claude Shannon - The father of information theory and founder of digital circuit design theory. (https://en.wikipedia.org/wiki/Claude_Shannon)
+		"shannon",
+
+		// Joan Clarke - Bletchley Park code breaker during the Second World War who pioneered techniques that remained top secret for decades. Also an accomplished numismatist https://en.wikipedia.org/wiki/Joan_Clarke
+		"clarke",
+
+		// Jane Colden - American botanist widely considered the first female American botanist - https://en.wikipedia.org/wiki/Jane_Colden
+		"colden",
+
+		// Gerty Theresa Cori - American biochemist who became the third woman—and first American woman—to win a Nobel Prize in science, and the first woman to be awarded the Nobel Prize in Physiology or Medicine. Cori was born in Prague. https://en.wikipedia.org/wiki/Gerty_Cori
+		"cori",
+
+		// Seymour Roger Cray was an American electrical engineer and supercomputer architect who designed a series of computers that were the fastest in the world for decades. https://en.wikipedia.org/wiki/Seymour_Cray
+		"cray",
+
+		// This entry reflects a husband and wife team who worked together:
+		// Joan Curran was a Welsh scientist who developed radar and invented chaff, a radar countermeasure. https://en.wikipedia.org/wiki/Joan_Curran
+		// Samuel Curran was an Irish physicist who worked alongside his wife during WWII and invented the proximity fuse. https://en.wikipedia.org/wiki/Samuel_Curran
+		"curran",
+
+		// Marie Curie discovered radioactivity. https://en.wikipedia.org/wiki/Marie_Curie.
+		"curie",
+
+		// Charles Darwin established the principles of natural evolution. https://en.wikipedia.org/wiki/Charles_Darwin.
+		"darwin",
+
+		// Leonardo Da Vinci invented too many things to list here. https://en.wikipedia.org/wiki/Leonardo_da_Vinci.
+		"davinci",
+
+		// Edsger Wybe Dijkstra was a Dutch computer scientist and mathematical scientist. https://en.wikipedia.org/wiki/Edsger_W._Dijkstra.
+		"dijkstra",
+
+		// Donna Dubinsky - played an integral role in the development of personal digital assistants (PDAs) serving as CEO of Palm, Inc. and co-founding Handspring. https://en.wikipedia.org/wiki/Donna_Dubinsky
+		"dubinsky",
+
+		// Annie Easley - She was a leading member of the team which developed software for the Centaur rocket stage and one of the first African-Americans in her field. https://en.wikipedia.org/wiki/Annie_Easley
+		"easley",
+
+		// Thomas Alva Edison, prolific inventor https://en.wikipedia.org/wiki/Thomas_Edison
+		"edison",
+
+		// Albert Einstein invented the general theory of relativity. https://en.wikipedia.org/wiki/Albert_Einstein
+		"einstein",
+
+		// Gertrude Elion - American biochemist, pharmacologist and the 1988 recipient of the Nobel Prize in Medicine - https://en.wikipedia.org/wiki/Gertrude_Elion
+		"elion",
+
+		// Douglas Engelbart gave the mother of all demos: https://en.wikipedia.org/wiki/Douglas_Engelbart
+		"engelbart",
+
+		// Euclid invented geometry. https://en.wikipedia.org/wiki/Euclid
+		"euclid",
+
+		// Leonhard Euler invented large parts of modern mathematics. https://de.wikipedia.org/wiki/Leonhard_Euler
+		"euler",
+
+		// Pierre de Fermat pioneered several aspects of modern mathematics. https://en.wikipedia.org/wiki/Pierre_de_Fermat
+		"fermat",
+
+		// Enrico Fermi invented the first nuclear reactor. https://en.wikipedia.org/wiki/Enrico_Fermi.
+		"fermi",
+
+		// Richard Feynman was a key contributor to quantum mechanics and particle physics. https://en.wikipedia.org/wiki/Richard_Feynman
+		"feynman",
+
+		// Benjamin Franklin is famous for his experiments in electricity and the invention of the lightning rod.
+		"franklin",
+
+		// Galileo was a founding father of modern astronomy, and faced politics and obscurantism to establish scientific truth.  https://en.wikipedia.org/wiki/Galileo_Galilei
+		"galileo",
+
+		// William Henry "Bill" Gates III is an American business magnate, philanthropist, investor, computer programmer, and inventor. https://en.wikipedia.org/wiki/Bill_Gates
+		"gates",
+
+		// Adele Goldberg, was one of the designers and developers of the Smalltalk language. https://en.wikipedia.org/wiki/Adele_Goldberg_(computer_scientist)
+		"goldberg",
+
+		// Adele Goldstine, born Adele Katz, wrote the complete technical description for the first electronic digital computer, ENIAC. https://en.wikipedia.org/wiki/Adele_Goldstine
+		"goldstine",
+
+		// Shafi Goldwasser is a computer scientist known for creating theoretical foundations of modern cryptography. Winner of 2012 ACM Turing Award. https://en.wikipedia.org/wiki/Shafi_Goldwasser
+		"goldwasser",
+
+		// James Golick, all around gangster.
+		"golick",
+
+		// Jane Goodall - British primatologist, ethologist, and anthropologist who is considered to be the world's foremost expert on chimpanzees - https://en.wikipedia.org/wiki/Jane_Goodall
+		"goodall",
+
+		// Lois Haibt - American computer scientist, part of the team at IBM that developed FORTRAN - https://en.wikipedia.org/wiki/Lois_Haibt
+		"haibt",
+
+		// Margaret Hamilton - Director of the Software Engineering Division of the MIT Instrumentation Laboratory, which developed on-board flight software for the Apollo space program. https://en.wikipedia.org/wiki/Margaret_Hamilton_(scientist)
+		"hamilton",
+
+		// Stephen Hawking pioneered the field of cosmology by combining general relativity and quantum mechanics. https://en.wikipedia.org/wiki/Stephen_Hawking
+		"hawking",
+
+		// Werner Heisenberg was a founding father of quantum mechanics. https://en.wikipedia.org/wiki/Werner_Heisenberg
+		"heisenberg",
+
+		// Grete Hermann was a German philosopher noted for her philosophical work on the foundations of quantum mechanics. https://en.wikipedia.org/wiki/Grete_Hermann
+		"hermann",
+
+		// Jaroslav Heyrovský was the inventor of the polarographic method, father of the electroanalytical method, and recipient of the Nobel Prize in 1959. His main field of work was polarography. https://en.wikipedia.org/wiki/Jaroslav_Heyrovsk%C3%BD
+		"heyrovsky",
+
+		// Dorothy Hodgkin was a British biochemist, credited with the development of protein crystallography. She was awarded the Nobel Prize in Chemistry in 1964. https://en.wikipedia.org/wiki/Dorothy_Hodgkin
+		"hodgkin",
+
+		// Erna Schneider Hoover revolutionized modern communication by inventing a computerized telephone switching method. https://en.wikipedia.org/wiki/Erna_Schneider_Hoover
+		"hoover",
+
+		// Grace Hopper developed the first compiler for a computer programming language and  is credited with popularizing the term "debugging" for fixing computer glitches. https://en.wikipedia.org/wiki/Grace_Hopper
+		"hopper",
+
+		// Frances Hugle, she was an American scientist, engineer, and inventor who contributed to the understanding of semiconductors, integrated circuitry, and the unique electrical principles of microscopic materials. https://en.wikipedia.org/wiki/Frances_Hugle
+		"hugle",
+
+		// Hypatia - Greek Alexandrine Neoplatonist philosopher in Egypt who was one of the earliest mothers of mathematics - https://en.wikipedia.org/wiki/Hypatia
+		"hypatia",
+
+		// Mary Jackson, American mathematician and aerospace engineer who earned the highest title within NASA's engineering department - https://en.wikipedia.org/wiki/Mary_Jackson_(engineer)
+		"jackson",
+
+		// Yeong-Sil Jang was a Korean scientist and astronomer during the Joseon Dynasty; he invented the first metal printing press and water gauge. https://en.wikipedia.org/wiki/Jang_Yeong-sil
+		"jang",
+
+		// Betty Jennings - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Jean_Bartik
+		"jennings",
+
+		// Mary Lou Jepsen, was the founder and chief technology officer of One Laptop Per Child (OLPC), and the founder of Pixel Qi. https://en.wikipedia.org/wiki/Mary_Lou_Jepsen
+		"jepsen",
+
+		// Katherine Coleman Goble Johnson - American physicist and mathematician contributed to the NASA. https://en.wikipedia.org/wiki/Katherine_Johnson
+		"johnson",
+
+		// Irène Joliot-Curie - French scientist who was awarded the Nobel Prize for Chemistry in 1935. Daughter of Marie and Pierre Curie. https://en.wikipedia.org/wiki/Ir%C3%A8ne_Joliot-Curie
+		"joliot",
+
+		// Karen Spärck Jones came up with the concept of inverse document frequency, which is used in most search engines today. https://en.wikipedia.org/wiki/Karen_Sp%C3%A4rck_Jones
+		"jones",
+
+		// A. P. J. Abdul Kalam - is an Indian scientist aka Missile Man of India for his work on the development of ballistic missile and launch vehicle technology - https://en.wikipedia.org/wiki/A._P._J._Abdul_Kalam
+		"kalam",
+
+		// Susan Kare, created the icons and many of the interface elements for the original Apple Macintosh in the 1980s, and was an original employee of NeXT, working as the Creative Director. https://en.wikipedia.org/wiki/Susan_Kare
+		"kare",
+
+		// Mary Kenneth Keller, Sister Mary Kenneth Keller became the first American woman to earn a PhD in Computer Science in 1965. https://en.wikipedia.org/wiki/Mary_Kenneth_Keller
+		"keller",
+
+		// Johannes Kepler, German astronomer known for his three laws of planetary motion - https://en.wikipedia.org/wiki/Johannes_Kepler
+		"kepler",
+
+		// Har Gobind Khorana - Indian-American biochemist who shared the 1968 Nobel Prize for Physiology - https://en.wikipedia.org/wiki/Har_Gobind_Khorana
+		"khorana",
+
+		// Jack Kilby invented silicone integrated circuits and gave Silicon Valley its name. - https://en.wikipedia.org/wiki/Jack_Kilby
+		"kilby",
+
+		// Maria Kirch - German astronomer and first woman to discover a comet - https://en.wikipedia.org/wiki/Maria_Margarethe_Kirch
+		"kirch",
+
+		// Donald Knuth - American computer scientist, author of "The Art of Computer Programming" and creator of the TeX typesetting system. https://en.wikipedia.org/wiki/Donald_Knuth
+		"knuth",
+
+		// Sophie Kowalevski - Russian mathematician responsible for important original contributions to analysis, differential equations and mechanics - https://en.wikipedia.org/wiki/Sofia_Kovalevskaya
+		"kowalevski",
+
+		// Marie-Jeanne de Lalande - French astronomer, mathematician and cataloguer of stars - https://en.wikipedia.org/wiki/Marie-Jeanne_de_Lalande
+		"lalande",
+
+		// Hedy Lamarr - Actress and inventor. The principles of her work are now incorporated into modern Wi-Fi, CDMA and Bluetooth technology. https://en.wikipedia.org/wiki/Hedy_Lamarr
+		"lamarr",
+
+		// Leslie B. Lamport - American computer scientist. Lamport is best known for his seminal work in distributed systems and was the winner of the 2013 Turing Award. https://en.wikipedia.org/wiki/Leslie_Lamport
+		"lamport",
+
+		// Mary Leakey - British paleoanthropologist who discovered the first fossilized Proconsul skull - https://en.wikipedia.org/wiki/Mary_Leakey
+		"leakey",
+
+		// Henrietta Swan Leavitt - she was an American astronomer who discovered the relation between the luminosity and the period of Cepheid variable stars. https://en.wikipedia.org/wiki/Henrietta_Swan_Leavitt
+		"leavitt",
+
+		//Daniel Lewin -  Mathematician, Akamai co-founder, soldier, 9/11 victim-- Developed optimization techniques for routing traffic on the internet. Died attempting to stop the 9-11 hijackers. https://en.wikipedia.org/wiki/Daniel_Lewin
+		"lewin",
+
+		// Ruth Lichterman - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Ruth_Teitelbaum
+		"lichterman",
+
+		// Barbara Liskov - co-developed the Liskov substitution principle. Liskov was also the winner of the Turing Prize in 2008. - https://en.wikipedia.org/wiki/Barbara_Liskov
+		"liskov",
+
+		// Ada Lovelace invented the first algorithm. https://en.wikipedia.org/wiki/Ada_Lovelace (thanks James Turnbull)
+		"lovelace",
+
+		// Auguste and Louis Lumière - the first filmmakers in history - https://en.wikipedia.org/wiki/Auguste_and_Louis_Lumi%C3%A8re
+		"lumiere",
+
+		// Mahavira - Ancient Indian mathematician during 9th century AD who discovered basic algebraic identities - https://en.wikipedia.org/wiki/Mah%C4%81v%C4%ABra_(mathematician)
+		"mahavira",
+
+		// Maria Mayer - American theoretical physicist and Nobel laureate in Physics for proposing the nuclear shell model of the atomic nucleus - https://en.wikipedia.org/wiki/Maria_Mayer
+		"mayer",
+
+		// John McCarthy invented LISP: https://en.wikipedia.org/wiki/John_McCarthy_(computer_scientist)
+		"mccarthy",
+
+		// Barbara McClintock - a distinguished American cytogeneticist, 1983 Nobel Laureate in Physiology or Medicine for discovering transposons. https://en.wikipedia.org/wiki/Barbara_McClintock
+		"mcclintock",
+
+		// Malcolm McLean invented the modern shipping container: https://en.wikipedia.org/wiki/Malcom_McLean
+		"mclean",
+
+		// Kay McNulty - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Kathleen_Antonelli
+		"mcnulty",
+
+		// Lise Meitner - Austrian/Swedish physicist who was involved in the discovery of nuclear fission. The element meitnerium is named after her - https://en.wikipedia.org/wiki/Lise_Meitner
+		"meitner",
+
+		// Carla Meninsky, was the game designer and programmer for Atari 2600 games Dodge 'Em and Warlords. https://en.wikipedia.org/wiki/Carla_Meninsky
+		"meninsky",
+
+		// Johanna Mestorf - German prehistoric archaeologist and first female museum director in Germany - https://en.wikipedia.org/wiki/Johanna_Mestorf
+		"mestorf",
+
+		// Marvin Minsky - Pioneer in Artificial Intelligence, co-founder of the MIT's AI Lab, won the Turing Award in 1969. https://en.wikipedia.org/wiki/Marvin_Minsky
+		"minsky",
+
+		// Maryam Mirzakhani - an Iranian mathematician and the first woman to win the Fields Medal. https://en.wikipedia.org/wiki/Maryam_Mirzakhani
+		"mirzakhani",
+
+		// Samuel Morse - contributed to the invention of a single-wire telegraph system based on European telegraphs and was a co-developer of the Morse code - https://en.wikipedia.org/wiki/Samuel_Morse
+		"morse",
+
+		// Ian Murdock - founder of the Debian project - https://en.wikipedia.org/wiki/Ian_Murdock
+		"murdock",
+
+		// John von Neumann - todays computer architectures are based on the von Neumann architecture. https://en.wikipedia.org/wiki/Von_Neumann_architecture
+		"neumann",
+
+		// Isaac Newton invented classic mechanics and modern optics. https://en.wikipedia.org/wiki/Isaac_Newton
+		"newton",
+
+		// Florence Nightingale, more prominently known as a nurse, was also the first female member of the Royal Statistical Society and a pioneer in statistical graphics https://en.wikipedia.org/wiki/Florence_Nightingale#Statistics_and_sanitary_reform
+		"nightingale",
+
+		// Alfred Nobel - a Swedish chemist, engineer, innovator, and armaments manufacturer (inventor of dynamite) - https://en.wikipedia.org/wiki/Alfred_Nobel
+		"nobel",
+
+		// Emmy Noether, German mathematician. Noether's Theorem is named after her. https://en.wikipedia.org/wiki/Emmy_Noether
+		"noether",
+
+		// Poppy Northcutt. Poppy Northcutt was the first woman to work as part of NASA’s Mission Control. http://www.businessinsider.com/poppy-northcutt-helped-apollo-astronauts-2014-12?op=1
+		"northcutt",
+
+		// Robert Noyce invented silicone integrated circuits and gave Silicon Valley its name. - https://en.wikipedia.org/wiki/Robert_Noyce
+		"noyce",
+
+		// Panini - Ancient Indian linguist and grammarian from 4th century CE who worked on the world's first formal system - https://en.wikipedia.org/wiki/P%C4%81%E1%B9%87ini#Comparison_with_modern_formal_systems
+		"panini",
+
+		// Ambroise Pare invented modern surgery. https://en.wikipedia.org/wiki/Ambroise_Par%C3%A9
+		"pare",
+
+		// Louis Pasteur discovered vaccination, fermentation and pasteurization. https://en.wikipedia.org/wiki/Louis_Pasteur.
+		"pasteur",
+
+		// Cecilia Payne-Gaposchkin was an astronomer and astrophysicist who, in 1925, proposed in her Ph.D. thesis an explanation for the composition of stars in terms of the relative abundances of hydrogen and helium. https://en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin
+		"payne",
+
+		// Radia Perlman is a software designer and network engineer and most famous for her invention of the spanning-tree protocol (STP). https://en.wikipedia.org/wiki/Radia_Perlman
+		"perlman",
+
+		// Rob Pike was a key contributor to Unix, Plan 9, the X graphic system, utf-8, and the Go programming language. https://en.wikipedia.org/wiki/Rob_Pike
+		"pike",
+
+		// Henri Poincaré made fundamental contributions in several fields of mathematics. https://en.wikipedia.org/wiki/Henri_Poincar%C3%A9
+		"poincare",
+
+		// Laura Poitras is a director and producer whose work, made possible by open source crypto tools, advances the causes of truth and freedom of information by reporting disclosures by whistleblowers such as Edward Snowden. https://en.wikipedia.org/wiki/Laura_Poitras
+		"poitras",
+
+		// Claudius Ptolemy - a Greco-Egyptian writer of Alexandria, known as a mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology - https://en.wikipedia.org/wiki/Ptolemy
+		"ptolemy",
+
+		// C. V. Raman - Indian physicist who won the Nobel Prize in 1930 for proposing the Raman effect. - https://en.wikipedia.org/wiki/C._V._Raman
+		"raman",
+
+		// Srinivasa Ramanujan - Indian mathematician and autodidact who made extraordinary contributions to mathematical analysis, number theory, infinite series, and continued fractions. - https://en.wikipedia.org/wiki/Srinivasa_Ramanujan
+		"ramanujan",
+
+		// Sally Kristen Ride was an American physicist and astronaut. She was the first American woman in space, and the youngest American astronaut. https://en.wikipedia.org/wiki/Sally_Ride
+		"ride",
+
+		// Rita Levi-Montalcini - Won Nobel Prize in Physiology or Medicine jointly with colleague Stanley Cohen for the discovery of nerve growth factor (https://en.wikipedia.org/wiki/Rita_Levi-Montalcini)
+		"montalcini",
+
+		// Dennis Ritchie - co-creator of UNIX and the C programming language. - https://en.wikipedia.org/wiki/Dennis_Ritchie
+		"ritchie",
+
+		// Wilhelm Conrad Röntgen - German physicist who was awarded the first Nobel Prize in Physics in 1901 for the discovery of X-rays (Röntgen rays). https://en.wikipedia.org/wiki/Wilhelm_R%C3%B6ntgen
+		"roentgen",
+
+		// Rosalind Franklin - British biophysicist and X-ray crystallographer whose research was critical to the understanding of DNA - https://en.wikipedia.org/wiki/Rosalind_Franklin
+		"rosalind",
+
+		// Meghnad Saha - Indian astrophysicist best known for his development of the Saha equation, used to describe chemical and physical conditions in stars - https://en.wikipedia.org/wiki/Meghnad_Saha
+		"saha",
+
+		// Jean E. Sammet developed FORMAC, the first widely used computer language for symbolic manipulation of mathematical formulas. https://en.wikipedia.org/wiki/Jean_E._Sammet
+		"sammet",
+
+		// Carol Shaw - Originally an Atari employee, Carol Shaw is said to be the first female video game designer. https://en.wikipedia.org/wiki/Carol_Shaw_(video_game_designer)
+		"shaw",
+
+		// Dame Stephanie "Steve" Shirley - Founded a software company in 1962 employing women working from home. https://en.wikipedia.org/wiki/Steve_Shirley
+		"shirley",
+
+		// William Shockley co-invented the transistor - https://en.wikipedia.org/wiki/William_Shockley
+		"shockley",
+
+		// Françoise Barré-Sinoussi - French virologist and Nobel Prize Laureate in Physiology or Medicine; her work was fundamental in identifying HIV as the cause of AIDS. https://en.wikipedia.org/wiki/Fran%C3%A7oise_Barr%C3%A9-Sinoussi
+		"sinoussi",
+
+		// Betty Snyder - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Betty_Holberton
+		"snyder",
+
+		// Frances Spence - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Frances_Spence
+		"spence",
+
+		// Richard Matthew Stallman - the founder of the Free Software movement, the GNU project, the Free Software Foundation, and the League for Programming Freedom. He also invented the concept of copyleft to protect the ideals of this movement, and enshrined this concept in the widely-used GPL (General Public License) for software. https://en.wikiquote.org/wiki/Richard_Stallman
+		"stallman",
+
+		// Michael Stonebraker is a database research pioneer and architect of Ingres, Postgres, VoltDB and SciDB. Winner of 2014 ACM Turing Award. https://en.wikipedia.org/wiki/Michael_Stonebraker
+		"stonebraker",
+
+		// Janese Swanson (with others) developed the first of the Carmen Sandiego games. She went on to found Girl Tech. https://en.wikipedia.org/wiki/Janese_Swanson
+		"swanson",
+
+		// Aaron Swartz was influential in creating RSS, Markdown, Creative Commons, Reddit, and much of the internet as we know it today. He was devoted to freedom of information on the web. https://en.wikiquote.org/wiki/Aaron_Swartz
+		"swartz",
+
+		// Bertha Swirles was a theoretical physicist who made a number of contributions to early quantum theory. https://en.wikipedia.org/wiki/Bertha_Swirles
+		"swirles",
+
+		// Nikola Tesla invented the AC electric system and every gadget ever used by a James Bond villain. https://en.wikipedia.org/wiki/Nikola_Tesla
+		"tesla",
+
+		// Ken Thompson - co-creator of UNIX and the C programming language - https://en.wikipedia.org/wiki/Ken_Thompson
+		"thompson",
+
+		// Linus Torvalds invented Linux and Git. https://en.wikipedia.org/wiki/Linus_Torvalds
+		"torvalds",
+
+		// Alan Turing was a founding father of computer science. https://en.wikipedia.org/wiki/Alan_Turing.
+		"turing",
+
+		// Varahamihira - Ancient Indian mathematician who discovered trigonometric formulae during 505-587 CE - https://en.wikipedia.org/wiki/Var%C4%81hamihira#Contributions
+		"varahamihira",
+
+		// Sir Mokshagundam Visvesvaraya - is a notable Indian engineer.  He is a recipient of the Indian Republic's highest honour, the Bharat Ratna, in 1955. On his birthday, 15 September is celebrated as Engineer's Day in India in his memory - https://en.wikipedia.org/wiki/Visvesvaraya
+		"visvesvaraya",
+
+		// Christiane Nüsslein-Volhard - German biologist, won Nobel Prize in Physiology or Medicine in 1995 for research on the genetic control of embryonic development. https://en.wikipedia.org/wiki/Christiane_N%C3%BCsslein-Volhard
+		"volhard",
+
+		// Marlyn Wescoff - one of the original programmers of the ENIAC. https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Marlyn_Meltzer
+		"wescoff",
+
+		// Andrew Wiles - Notable British mathematician who proved the enigmatic Fermat's Last Theorem - https://en.wikipedia.org/wiki/Andrew_Wiles
+		"wiles",
+
+		// Roberta Williams, did pioneering work in graphical adventure games for personal computers, particularly the King's Quest series. https://en.wikipedia.org/wiki/Roberta_Williams
+		"williams",
+
+		// Sophie Wilson designed the first Acorn Micro-Computer and the instruction set for ARM processors. https://en.wikipedia.org/wiki/Sophie_Wilson
+		"wilson",
+
+		// Jeannette Wing - co-developed the Liskov substitution principle. - https://en.wikipedia.org/wiki/Jeannette_Wing
+		"wing",
+
+		// Steve Wozniak invented the Apple I and Apple II. https://en.wikipedia.org/wiki/Steve_Wozniak
+		"wozniak",
+
+		// The Wright brothers, Orville and Wilbur - credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight - https://en.wikipedia.org/wiki/Wright_brothers
+		"wright",
+
+		// Rosalyn Sussman Yalow - Rosalyn Sussman Yalow was an American medical physicist, and a co-winner of the 1977 Nobel Prize in Physiology or Medicine for development of the radioimmunoassay technique. https://en.wikipedia.org/wiki/Rosalyn_Sussman_Yalow
+		"yalow",
+
+		// Ada Yonath - an Israeli crystallographer, the first woman from the Middle East to win a Nobel prize in the sciences. https://en.wikipedia.org/wiki/Ada_Yonath
+		"yonath",
+	}
+)
+
+// GetRandomName generates a random name from the list of adjectives and surnames in this package
+// formatted as "adjective_surname". For example 'focused_turing'. If retry is non-zero, a random
+// integer between 0 and 10 will be added to the end of the name, e.g `focused_turing3`
+func GetRandomName(retry int) string {
+	rnd := random.Rand
+begin:
+	name := fmt.Sprintf("%s_%s", left[rnd.Intn(len(left))], right[rnd.Intn(len(right))])
+	if name == "boring_wozniak" /* Steve Wozniak is not boring */ {
+		goto begin
+	}
+
+	if retry > 0 {
+		name = fmt.Sprintf("%s%d", name, rnd.Intn(10))
+	}
+	return name
+}

vendor/github.com/docker/docker/pkg/random/random.go

@@ -0,0 +1,71 @@
+package random
+
+import (
+	cryptorand "crypto/rand"
+	"io"
+	"math"
+	"math/big"
+	"math/rand"
+	"sync"
+	"time"
+)
+
+// Rand is a global *rand.Rand instance, which initialized with NewSource() source.
+var Rand = rand.New(NewSource())
+
+// Reader is a global, shared instance of a pseudorandom bytes generator.
+// It doesn't consume entropy.
+var Reader io.Reader = &reader{rnd: Rand}
+
+// copypaste from standard math/rand
+type lockedSource struct {
+	lk  sync.Mutex
+	src rand.Source
+}
+
+func (r *lockedSource) Int63() (n int64) {
+	r.lk.Lock()
+	n = r.src.Int63()
+	r.lk.Unlock()
+	return
+}
+
+func (r *lockedSource) Seed(seed int64) {
+	r.lk.Lock()
+	r.src.Seed(seed)
+	r.lk.Unlock()
+}
+
+// NewSource returns math/rand.Source safe for concurrent use and initialized
+// with current unix-nano timestamp
+func NewSource() rand.Source {
+	var seed int64
+	if cryptoseed, err := cryptorand.Int(cryptorand.Reader, big.NewInt(math.MaxInt64)); err != nil {
+		// This should not happen, but worst-case fallback to time-based seed.
+		seed = time.Now().UnixNano()
+	} else {
+		seed = cryptoseed.Int64()
+	}
+	return &lockedSource{
+		src: rand.NewSource(seed),
+	}
+}
+
+type reader struct {
+	rnd *rand.Rand
+}
+
+func (r *reader) Read(b []byte) (int, error) {
+	i := 0
+	for {
+		val := r.rnd.Int63()
+		for val > 0 {
+			b[i] = byte(val)
+			i++
+			if i == len(b) {
+				return i, nil
+			}
+			val >>= 8
+		}
+	}
+}

vendor/github.com/dustin/go-humanize/LICENSE

@@ -0,0 +1,21 @@
+Copyright (c) 2005-2008  Dustin Sallings <dustin@spy.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+<http://www.opensource.org/licenses/mit-license.php>

vendor/github.com/dustin/go-humanize/README.markdown

@@ -0,0 +1,92 @@
+# Humane Units [![Build Status](https://travis-ci.org/dustin/go-humanize.svg?branch=master)](https://travis-ci.org/dustin/go-humanize) [![GoDoc](https://godoc.org/github.com/dustin/go-humanize?status.svg)](https://godoc.org/github.com/dustin/go-humanize)
+
+Just a few functions for helping humanize times and sizes.
+
+`go get` it as `github.com/dustin/go-humanize`, import it as
+`"github.com/dustin/go-humanize"`, use it as `humanize`.
+
+See [godoc](https://godoc.org/github.com/dustin/go-humanize) for
+complete documentation.
+
+## Sizes
+
+This lets you take numbers like `82854982` and convert them to useful
+strings like, `83 MB` or `79 MiB` (whichever you prefer).
+
+Example:
+
+```go
+fmt.Printf("That file is %s.", humanize.Bytes(82854982)) // That file is 83 MB.
+```
+
+## Times
+
+This lets you take a `time.Time` and spit it out in relative terms.
+For example, `12 seconds ago` or `3 days from now`.
+
+Example:
+
+```go
+fmt.Printf("This was touched %s.", humanize.Time(someTimeInstance)) // This was touched 7 hours ago.
+```
+
+Thanks to Kyle Lemons for the time implementation from an IRC
+conversation one day. It's pretty neat.
+
+## Ordinals
+
+From a [mailing list discussion][odisc] where a user wanted to be able
+to label ordinals.
+
+    0 -> 0th
+    1 -> 1st
+    2 -> 2nd
+    3 -> 3rd
+    4 -> 4th
+    [...]
+
+Example:
+
+```go
+fmt.Printf("You're my %s best friend.", humanize.Ordinal(193)) // You are my 193rd best friend.
+```
+
+## Commas
+
+Want to shove commas into numbers? Be my guest.
+
+    0 -> 0
+    100 -> 100
+    1000 -> 1,000
+    1000000000 -> 1,000,000,000
+    -100000 -> -100,000
+
+Example:
+
+```go
+fmt.Printf("You owe $%s.\n", humanize.Comma(6582491)) // You owe $6,582,491.
+```
+
+## Ftoa
+
+Nicer float64 formatter that removes trailing zeros.
+
+```go
+fmt.Printf("%f", 2.24)                // 2.240000
+fmt.Printf("%s", humanize.Ftoa(2.24)) // 2.24
+fmt.Printf("%f", 2.0)                 // 2.000000
+fmt.Printf("%s", humanize.Ftoa(2.0))  // 2
+```
+
+## SI notation
+
+Format numbers with [SI notation][sinotation].
+
+Example:
+
+```go
+humanize.SI(0.00000000223, "M") // 2.23 nM
+```
+
+[odisc]: https://groups.google.com/d/topic/golang-nuts/l8NhI74jl-4/discussion
+[sinotation]: http://en.wikipedia.org/wiki/Metric_prefix

vendor/github.com/dustin/go-humanize/big.go

@@ -0,0 +1,31 @@
+package humanize
+
+import (
+	"math/big"
+)
+
+// order of magnitude (to a max order)
+func oomm(n, b *big.Int, maxmag int) (float64, int) {
+	mag := 0
+	m := &big.Int{}
+	for n.Cmp(b) >= 0 {
+		n.DivMod(n, b, m)
+		mag++
+		if mag == maxmag && maxmag >= 0 {
+			break
+		}
+	}
+	return float64(n.Int64()) + (float64(m.Int64()) / float64(b.Int64())), mag
+}
+
+// total order of magnitude
+// (same as above, but with no upper limit)
+func oom(n, b *big.Int) (float64, int) {
+	mag := 0
+	m := &big.Int{}
+	for n.Cmp(b) >= 0 {
+		n.DivMod(n, b, m)
+		mag++
+	}
+	return float64(n.Int64()) + (float64(m.Int64()) / float64(b.Int64())), mag
+}

vendor/github.com/dustin/go-humanize/bigbytes.go

@@ -0,0 +1,173 @@
+package humanize
+
+import (
+	"fmt"
+	"math/big"
+	"strings"
+	"unicode"
+)
+
+var (
+	bigIECExp = big.NewInt(1024)
+
+	// BigByte is one byte in bit.Ints
+	BigByte = big.NewInt(1)
+	// BigKiByte is 1,024 bytes in bit.Ints
+	BigKiByte = (&big.Int{}).Mul(BigByte, bigIECExp)
+	// BigMiByte is 1,024 k bytes in bit.Ints
+	BigMiByte = (&big.Int{}).Mul(BigKiByte, bigIECExp)
+	// BigGiByte is 1,024 m bytes in bit.Ints
+	BigGiByte = (&big.Int{}).Mul(BigMiByte, bigIECExp)
+	// BigTiByte is 1,024 g bytes in bit.Ints
+	BigTiByte = (&big.Int{}).Mul(BigGiByte, bigIECExp)
+	// BigPiByte is 1,024 t bytes in bit.Ints
+	BigPiByte = (&big.Int{}).Mul(BigTiByte, bigIECExp)
+	// BigEiByte is 1,024 p bytes in bit.Ints
+	BigEiByte = (&big.Int{}).Mul(BigPiByte, bigIECExp)
+	// BigZiByte is 1,024 e bytes in bit.Ints
+	BigZiByte = (&big.Int{}).Mul(BigEiByte, bigIECExp)
+	// BigYiByte is 1,024 z bytes in bit.Ints
+	BigYiByte = (&big.Int{}).Mul(BigZiByte, bigIECExp)
+)
+
+var (
+	bigSIExp = big.NewInt(1000)
+
+	// BigSIByte is one SI byte in big.Ints
+	BigSIByte = big.NewInt(1)
+	// BigKByte is 1,000 SI bytes in big.Ints
+	BigKByte = (&big.Int{}).Mul(BigSIByte, bigSIExp)
+	// BigMByte is 1,000 SI k bytes in big.Ints
+	BigMByte = (&big.Int{}).Mul(BigKByte, bigSIExp)
+	// BigGByte is 1,000 SI m bytes in big.Ints
+	BigGByte = (&big.Int{}).Mul(BigMByte, bigSIExp)
+	// BigTByte is 1,000 SI g bytes in big.Ints
+	BigTByte = (&big.Int{}).Mul(BigGByte, bigSIExp)
+	// BigPByte is 1,000 SI t bytes in big.Ints
+	BigPByte = (&big.Int{}).Mul(BigTByte, bigSIExp)
+	// BigEByte is 1,000 SI p bytes in big.Ints
+	BigEByte = (&big.Int{}).Mul(BigPByte, bigSIExp)
+	// BigZByte is 1,000 SI e bytes in big.Ints
+	BigZByte = (&big.Int{}).Mul(BigEByte, bigSIExp)
+	// BigYByte is 1,000 SI z bytes in big.Ints
+	BigYByte = (&big.Int{}).Mul(BigZByte, bigSIExp)
+)
+
+var bigBytesSizeTable = map[string]*big.Int{
+	"b":   BigByte,
+	"kib": BigKiByte,
+	"kb":  BigKByte,
+	"mib": BigMiByte,
+	"mb":  BigMByte,
+	"gib": BigGiByte,
+	"gb":  BigGByte,
+	"tib": BigTiByte,
+	"tb":  BigTByte,
+	"pib": BigPiByte,
+	"pb":  BigPByte,
+	"eib": BigEiByte,
+	"eb":  BigEByte,
+	"zib": BigZiByte,
+	"zb":  BigZByte,
+	"yib": BigYiByte,
+	"yb":  BigYByte,
+	// Without suffix
+	"":   BigByte,
+	"ki": BigKiByte,
+	"k":  BigKByte,
+	"mi": BigMiByte,
+	"m":  BigMByte,
+	"gi": BigGiByte,
+	"g":  BigGByte,
+	"ti": BigTiByte,
+	"t":  BigTByte,
+	"pi": BigPiByte,
+	"p":  BigPByte,
+	"ei": BigEiByte,
+	"e":  BigEByte,
+	"z":  BigZByte,
+	"zi": BigZiByte,
+	"y":  BigYByte,
+	"yi": BigYiByte,
+}
+
+var ten = big.NewInt(10)
+
+func humanateBigBytes(s, base *big.Int, sizes []string) string {
+	if s.Cmp(ten) < 0 {
+		return fmt.Sprintf("%d B", s)
+	}
+	c := (&big.Int{}).Set(s)
+	val, mag := oomm(c, base, len(sizes)-1)
+	suffix := sizes[mag]
+	f := "%.0f %s"
+	if val < 10 {
+		f = "%.1f %s"
+	}
+
+	return fmt.Sprintf(f, val, suffix)
+
+}
+
+// BigBytes produces a human readable representation of an SI size.
+//
+// See also: ParseBigBytes.
+//
+// BigBytes(82854982) -> 83 MB
+func BigBytes(s *big.Int) string {
+	sizes := []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+	return humanateBigBytes(s, bigSIExp, sizes)
+}
+
+// BigIBytes produces a human readable representation of an IEC size.
+//
+// See also: ParseBigBytes.
+//
+// BigIBytes(82854982) -> 79 MiB
+func BigIBytes(s *big.Int) string {
+	sizes := []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+	return humanateBigBytes(s, bigIECExp, sizes)
+}
+
+// ParseBigBytes parses a string representation of bytes into the number
+// of bytes it represents.
+//
+// See also: BigBytes, BigIBytes.
+//
+// ParseBigBytes("42 MB") -> 42000000, nil
+// ParseBigBytes("42 mib") -> 44040192, nil
+func ParseBigBytes(s string) (*big.Int, error) {
+	lastDigit := 0
+	hasComma := false
+	for _, r := range s {
+		if !(unicode.IsDigit(r) || r == '.' || r == ',') {
+			break
+		}
+		if r == ',' {
+			hasComma = true
+		}
+		lastDigit++
+	}
+
+	num := s[:lastDigit]
+	if hasComma {
+		num = strings.Replace(num, ",", "", -1)
+	}
+
+	val := &big.Rat{}
+	_, err := fmt.Sscanf(num, "%f", val)
+	if err != nil {
+		return nil, err
+	}
+
+	extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
+	if m, ok := bigBytesSizeTable[extra]; ok {
+		mv := (&big.Rat{}).SetInt(m)
+		val.Mul(val, mv)
+		rv := &big.Int{}
+		rv.Div(val.Num(), val.Denom())
+		return rv, nil
+	}
+
+	return nil, fmt.Errorf("unhandled size name: %v", extra)
+}

vendor/github.com/dustin/go-humanize/bytes.go

@@ -0,0 +1,143 @@
+package humanize
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+	"unicode"
+)
+
+// IEC Sizes.
+// kibis of bits
+const (
+	Byte = 1 << (iota * 10)
+	KiByte
+	MiByte
+	GiByte
+	TiByte
+	PiByte
+	EiByte
+)
+
+// SI Sizes.
+const (
+	IByte = 1
+	KByte = IByte * 1000
+	MByte = KByte * 1000
+	GByte = MByte * 1000
+	TByte = GByte * 1000
+	PByte = TByte * 1000
+	EByte = PByte * 1000
+)
+
+var bytesSizeTable = map[string]uint64{
+	"b":   Byte,
+	"kib": KiByte,
+	"kb":  KByte,
+	"mib": MiByte,
+	"mb":  MByte,
+	"gib": GiByte,
+	"gb":  GByte,
+	"tib": TiByte,
+	"tb":  TByte,
+	"pib": PiByte,
+	"pb":  PByte,
+	"eib": EiByte,
+	"eb":  EByte,
+	// Without suffix
+	"":   Byte,
+	"ki": KiByte,
+	"k":  KByte,
+	"mi": MiByte,
+	"m":  MByte,
+	"gi": GiByte,
+	"g":  GByte,
+	"ti": TiByte,
+	"t":  TByte,
+	"pi": PiByte,
+	"p":  PByte,
+	"ei": EiByte,
+	"e":  EByte,
+}
+
+func logn(n, b float64) float64 {
+	return math.Log(n) / math.Log(b)
+}
+
+func humanateBytes(s uint64, base float64, sizes []string) string {
+	if s < 10 {
+		return fmt.Sprintf("%d B", s)
+	}
+	e := math.Floor(logn(float64(s), base))
+	suffix := sizes[int(e)]
+	val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10
+	f := "%.0f %s"
+	if val < 10 {
+		f = "%.1f %s"
+	}
+
+	return fmt.Sprintf(f, val, suffix)
+}
+
+// Bytes produces a human readable representation of an SI size.
+//
+// See also: ParseBytes.
+//
+// Bytes(82854982) -> 83 MB
+func Bytes(s uint64) string {
+	sizes := []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"}
+	return humanateBytes(s, 1000, sizes)
+}
+
+// IBytes produces a human readable representation of an IEC size.
+//
+// See also: ParseBytes.
+//
+// IBytes(82854982) -> 79 MiB
+func IBytes(s uint64) string {
+	sizes := []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"}
+	return humanateBytes(s, 1024, sizes)
+}
+
+// ParseBytes parses a string representation of bytes into the number
+// of bytes it represents.
+//
+// See Also: Bytes, IBytes.
+//
+// ParseBytes("42 MB") -> 42000000, nil
+// ParseBytes("42 mib") -> 44040192, nil
+func ParseBytes(s string) (uint64, error) {
+	lastDigit := 0
+	hasComma := false
+	for _, r := range s {
+		if !(unicode.IsDigit(r) || r == '.' || r == ',') {
+			break
+		}
+		if r == ',' {
+			hasComma = true
+		}
+		lastDigit++
+	}
+
+	num := s[:lastDigit]
+	if hasComma {
+		num = strings.Replace(num, ",", "", -1)
+	}
+
+	f, err := strconv.ParseFloat(num, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
+	if m, ok := bytesSizeTable[extra]; ok {
+		f *= float64(m)
+		if f >= math.MaxUint64 {
+			return 0, fmt.Errorf("too large: %v", s)
+		}
+		return uint64(f), nil
+	}
+
+	return 0, fmt.Errorf("unhandled size name: %v", extra)
+}

vendor/github.com/dustin/go-humanize/comma.go

@@ -0,0 +1,108 @@
+package humanize
+
+import (
+	"bytes"
+	"math"
+	"math/big"
+	"strconv"
+	"strings"
+)
+
+// Comma produces a string form of the given number in base 10 with
+// commas after every three orders of magnitude.
+//
+// e.g. Comma(834142) -> 834,142
+func Comma(v int64) string {
+	sign := ""
+
+	// minin64 can't be negated to a usable value, so it has to be special cased.
+	if v == math.MinInt64 {
+		return "-9,223,372,036,854,775,808"
+	}
+
+	if v < 0 {
+		sign = "-"
+		v = 0 - v
+	}
+
+	parts := []string{"", "", "", "", "", "", ""}
+	j := len(parts) - 1
+
+	for v > 999 {
+		parts[j] = strconv.FormatInt(v%1000, 10)
+		switch len(parts[j]) {
+		case 2:
+			parts[j] = "0" + parts[j]
+		case 1:
+			parts[j] = "00" + parts[j]
+		}
+		v = v / 1000
+		j--
+	}
+	parts[j] = strconv.Itoa(int(v))
+	return sign + strings.Join(parts[j:], ",")
+}
+
+// Commaf produces a string form of the given number in base 10 with
+// commas after every three orders of magnitude.
+//
+// e.g. Commaf(834142.32) -> 834,142.32
+func Commaf(v float64) string {
+	buf := &bytes.Buffer{}
+	if v < 0 {
+		buf.Write([]byte{'-'})
+		v = 0 - v
+	}
+
+	comma := []byte{','}
+
+	parts := strings.Split(strconv.FormatFloat(v, 'f', -1, 64), ".")
+	pos := 0
+	if len(parts[0])%3 != 0 {
+		pos += len(parts[0]) % 3
+		buf.WriteString(parts[0][:pos])
+		buf.Write(comma)
+	}
+	for ; pos < len(parts[0]); pos += 3 {
+		buf.WriteString(parts[0][pos : pos+3])
+		buf.Write(comma)
+	}
+	buf.Truncate(buf.Len() - 1)
+
+	if len(parts) > 1 {
+		buf.Write([]byte{'.'})
+		buf.WriteString(parts[1])
+	}
+	return buf.String()
+}
+
+// BigComma produces a string form of the given big.Int in base 10
+// with commas after every three orders of magnitude.
+func BigComma(b *big.Int) string {
+	sign := ""
+	if b.Sign() < 0 {
+		sign = "-"
+		b.Abs(b)
+	}
+
+	athousand := big.NewInt(1000)
+	c := (&big.Int{}).Set(b)
+	_, m := oom(c, athousand)
+	parts := make([]string, m+1)
+	j := len(parts) - 1
+
+	mod := &big.Int{}
+	for b.Cmp(athousand) >= 0 {
+		b.DivMod(b, athousand, mod)
+		parts[j] = strconv.FormatInt(mod.Int64(), 10)
+		switch len(parts[j]) {
+		case 2:
+			parts[j] = "0" + parts[j]
+		case 1:
+			parts[j] = "00" + parts[j]
+		}
+		j--
+	}
+	parts[j] = strconv.Itoa(int(b.Int64()))
+	return sign + strings.Join(parts[j:], ",")
+}

vendor/github.com/dustin/go-humanize/commaf.go

@@ -0,0 +1,40 @@
+// +build go1.6
+
+package humanize
+
+import (
+	"bytes"
+	"math/big"
+	"strings"
+)
+
+// BigCommaf produces a string form of the given big.Float in base 10
+// with commas after every three orders of magnitude.
+func BigCommaf(v *big.Float) string {
+	buf := &bytes.Buffer{}
+	if v.Sign() < 0 {
+		buf.Write([]byte{'-'})
+		v.Abs(v)
+	}
+
+	comma := []byte{','}
+
+	parts := strings.Split(v.Text('f', -1), ".")
+	pos := 0
+	if len(parts[0])%3 != 0 {
+		pos += len(parts[0]) % 3
+		buf.WriteString(parts[0][:pos])
+		buf.Write(comma)
+	}
+	for ; pos < len(parts[0]); pos += 3 {
+		buf.WriteString(parts[0][pos : pos+3])
+		buf.Write(comma)
+	}
+	buf.Truncate(buf.Len() - 1)
+
+	if len(parts) > 1 {
+		buf.Write([]byte{'.'})
+		buf.WriteString(parts[1])
+	}
+	return buf.String()
+}

vendor/github.com/dustin/go-humanize/ftoa.go

@@ -0,0 +1,23 @@
+package humanize
+
+import "strconv"
+
+func stripTrailingZeros(s string) string {
+	offset := len(s) - 1
+	for offset > 0 {
+		if s[offset] == '.' {
+			offset--
+			break
+		}
+		if s[offset] != '0' {
+			break
+		}
+		offset--
+	}
+	return s[:offset+1]
+}
+
+// Ftoa converts a float to a string with no trailing zeros.
+func Ftoa(num float64) string {
+	return stripTrailingZeros(strconv.FormatFloat(num, 'f', 6, 64))
+}

vendor/github.com/dustin/go-humanize/humanize.go

@@ -0,0 +1,8 @@
+/*
+Package humanize converts boring ugly numbers to human-friendly strings and back.
+
+Durations can be turned into strings such as "3 days ago", numbers
+representing sizes like 82854982 into useful strings like, "83 MB" or
+"79 MiB" (whichever you prefer).
+*/
+package humanize

vendor/github.com/dustin/go-humanize/number.go

@@ -0,0 +1,192 @@
+package humanize
+
+/*
+Slightly adapted from the source to fit go-humanize.
+
+Author: https://github.com/gorhill
+Source: https://gist.github.com/gorhill/5285193
+
+*/
+
+import (
+	"math"
+	"strconv"
+)
+
+var (
+	renderFloatPrecisionMultipliers = [...]float64{
+		1,
+		10,
+		100,
+		1000,
+		10000,
+		100000,
+		1000000,
+		10000000,
+		100000000,
+		1000000000,
+	}
+
+	renderFloatPrecisionRounders = [...]float64{
+		0.5,
+		0.05,
+		0.005,
+		0.0005,
+		0.00005,
+		0.000005,
+		0.0000005,
+		0.00000005,
+		0.000000005,
+		0.0000000005,
+	}
+)
+
+// FormatFloat produces a formatted number as string based on the following user-specified criteria:
+// * thousands separator
+// * decimal separator
+// * decimal precision
+//
+// Usage: s := RenderFloat(format, n)
+// The format parameter tells how to render the number n.
+//
+// See examples: http://play.golang.org/p/LXc1Ddm1lJ
+//
+// Examples of format strings, given n = 12345.6789:
+// "#,###.##" => "12,345.67"
+// "#,###." => "12,345"
+// "#,###" => "12345,678"
+// "#\u202F###,##" => "12 345,68"
+// "#.###,###### => 12.345,678900
+// "" (aka default format) => 12,345.67
+//
+// The highest precision allowed is 9 digits after the decimal symbol.
+// There is also a version for integer number, FormatInteger(),
+// which is convenient for calls within template.
+func FormatFloat(format string, n float64) string {
+	// Special cases:
+	//   NaN = "NaN"
+	//   +Inf = "+Infinity"
+	//   -Inf = "-Infinity"
+	if math.IsNaN(n) {
+		return "NaN"
+	}
+	if n > math.MaxFloat64 {
+		return "Infinity"
+	}
+	if n < -math.MaxFloat64 {
+		return "-Infinity"
+	}
+
+	// default format
+	precision := 2
+	decimalStr := "."
+	thousandStr := ","
+	positiveStr := ""
+	negativeStr := "-"
+
+	if len(format) > 0 {
+		format := []rune(format)
+
+		// If there is an explicit format directive,
+		// then default values are these:
+		precision = 9
+		thousandStr = ""
+
+		// collect indices of meaningful formatting directives
+		formatIndx := []int{}
+		for i, char := range format {
+			if char != '#' && char != '0' {
+				formatIndx = append(formatIndx, i)
+			}
+		}
+
+		if len(formatIndx) > 0 {
+			// Directive at index 0:
+			//   Must be a '+'
+			//   Raise an error if not the case
+			// index: 0123456789
+			//        +0.000,000
+			//        +000,000.0
+			//        +0000.00
+			//        +0000
+			if formatIndx[0] == 0 {
+				if format[formatIndx[0]] != '+' {
+					panic("RenderFloat(): invalid positive sign directive")
+				}
+				positiveStr = "+"
+				formatIndx = formatIndx[1:]
+			}
+
+			// Two directives:
+			//   First is thousands separator
+			//   Raise an error if not followed by 3-digit
+			// 0123456789
+			// 0.000,000
+			// 000,000.00
+			if len(formatIndx) == 2 {
+				if (formatIndx[1] - formatIndx[0]) != 4 {
+					panic("RenderFloat(): thousands separator directive must be followed by 3 digit-specifiers")
+				}
+				thousandStr = string(format[formatIndx[0]])
+				formatIndx = formatIndx[1:]
+			}
+
+			// One directive:
+			//   Directive is decimal separator
+			//   The number of digit-specifier following the separator indicates wanted precision
+			// 0123456789
+			// 0.00
+			// 000,0000
+			if len(formatIndx) == 1 {
+				decimalStr = string(format[formatIndx[0]])
+				precision = len(format) - formatIndx[0] - 1
+			}
+		}
+	}
+
+	// generate sign part
+	var signStr string
+	if n >= 0.000000001 {
+		signStr = positiveStr
+	} else if n <= -0.000000001 {
+		signStr = negativeStr
+		n = -n
+	} else {
+		signStr = ""
+		n = 0.0
+	}
+
+	// split number into integer and fractional parts
+	intf, fracf := math.Modf(n + renderFloatPrecisionRounders[precision])
+
+	// generate integer part string
+	intStr := strconv.FormatInt(int64(intf), 10)
+
+	// add thousand separator if required
+	if len(thousandStr) > 0 {
+		for i := len(intStr); i > 3; {
+			i -= 3
+			intStr = intStr[:i] + thousandStr + intStr[i:]
+		}
+	}
+
+	// no fractional part, we can leave now
+	if precision == 0 {
+		return signStr + intStr
+	}
+
+	// generate fractional part
+	fracStr := strconv.Itoa(int(fracf * renderFloatPrecisionMultipliers[precision]))
+	// may need padding
+	if len(fracStr) < precision {
+		fracStr = "000000000000000"[:precision-len(fracStr)] + fracStr
+	}
+
+	return signStr + intStr + decimalStr + fracStr
+}
+
+// FormatInteger produces a formatted number as string.
+// See FormatFloat.
+func FormatInteger(format string, n int) string {
+	return FormatFloat(format, float64(n))
+}

vendor/github.com/dustin/go-humanize/ordinals.go

@@ -0,0 +1,25 @@
+package humanize
+
+import "strconv"
+
+// Ordinal gives you the input number in a rank/ordinal format.
+//
+// Ordinal(3) -> 3rd
+func Ordinal(x int) string {
+	suffix := "th"
+	switch x % 10 {
+	case 1:
+		if x%100 != 11 {
+			suffix = "st"
+		}
+	case 2:
+		if x%100 != 12 {
+			suffix = "nd"
+		}
+	case 3:
+		if x%100 != 13 {
+			suffix = "rd"
+		}
+	}
+	return strconv.Itoa(x) + suffix
+}

vendor/github.com/dustin/go-humanize/si.go

@@ -0,0 +1,113 @@
+package humanize
+
+import (
+	"errors"
+	"math"
+	"regexp"
+	"strconv"
+)
+
+var siPrefixTable = map[float64]string{
+	-24: "y", // yocto
+	-21: "z", // zepto
+	-18: "a", // atto
+	-15: "f", // femto
+	-12: "p", // pico
+	-9:  "n", // nano
+	-6:  "µ", // micro
+	-3:  "m", // milli
+	0:   "",
+	3:   "k", // kilo
+	6:   "M", // mega
+	9:   "G", // giga
+	12:  "T", // tera
+	15:  "P", // peta
+	18:  "E", // exa
+	21:  "Z", // zetta
+	24:  "Y", // yotta
+}
+
+var revSIPrefixTable = revfmap(siPrefixTable)
+
+// revfmap reverses the map and precomputes the power multiplier
+func revfmap(in map[float64]string) map[string]float64 {
+	rv := map[string]float64{}
+	for k, v := range in {
+		rv[v] = math.Pow(10, k)
+	}
+	return rv
+}
+
+var riParseRegex *regexp.Regexp
+
+func init() {
+	ri := `^([\-0-9.]+)\s?([`
+	for _, v := range siPrefixTable {
+		ri += v
+	}
+	ri += `]?)(.*)`
+
+	riParseRegex = regexp.MustCompile(ri)
+}
+
+// ComputeSI finds the most appropriate SI prefix for the given number
+// and returns the prefix along with the value adjusted to be within
+// that prefix.
+//
+// See also: SI, ParseSI.
+//
+// e.g. ComputeSI(2.2345e-12) -> (2.2345, "p")
+func ComputeSI(input float64) (float64, string) {
+	if input == 0 {
+		return 0, ""
+	}
+	mag := math.Abs(input)
+	exponent := math.Floor(logn(mag, 10))
+	exponent = math.Floor(exponent/3) * 3
+
+	value := mag / math.Pow(10, exponent)
+
+	// Handle special case where value is exactly 1000.0
+	// Should return 1 M instead of 1000 k
+	if value == 1000.0 {
+		exponent += 3
+		value = mag / math.Pow(10, exponent)
+	}
+
+	value = math.Copysign(value, input)
+
+	prefix := siPrefixTable[exponent]
+	return value, prefix
+}
+
+// SI returns a string with default formatting.
+//
+// SI uses Ftoa to format float value, removing trailing zeros.
+//
+// See also: ComputeSI, ParseSI.
+//
+// e.g. SI(1000000, "B") -> 1 MB
+// e.g. SI(2.2345e-12, "F") -> 2.2345 pF
+func SI(input float64, unit string) string {
+	value, prefix := ComputeSI(input)
+	return Ftoa(value) + " " + prefix + unit
+}
+
+var errInvalid = errors.New("invalid input")
+
+// ParseSI parses an SI string back into the number and unit.
+//
+// See also: SI, ComputeSI.
+//
+// e.g. ParseSI("2.2345 pF") -> (2.2345e-12, "F", nil)
+func ParseSI(input string) (float64, string, error) {
+	found := riParseRegex.FindStringSubmatch(input)
+	if len(found) != 4 {
+		return 0, "", errInvalid
+	}
+	mag := revSIPrefixTable[found[2]]
+	unit := found[3]
+
+	base, err := strconv.ParseFloat(found[1], 64)
+	return base * mag, unit, err
+}

vendor/github.com/dustin/go-humanize/times.go

@@ -0,0 +1,117 @@
+package humanize
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"time"
+)
+
+// Seconds-based time units
+const (
+	Day      = 24 * time.Hour
+	Week     = 7 * Day
+	Month    = 30 * Day
+	Year     = 12 * Month
+	LongTime = 37 * Year
+)
+
+// Time formats a time into a relative string.
+//
+// Time(someT) -> "3 weeks ago"
+func Time(then time.Time) string {
+	return RelTime(then, time.Now(), "ago", "from now")
+}
+
+// A RelTimeMagnitude struct contains a relative time point at which
+// the relative format of time will switch to a new format string.  A
+// slice of these in ascending order by their "D" field is passed to
+// CustomRelTime to format durations.
+//
+// The Format field is a string that may contain a "%s" which will be
+// replaced with the appropriate signed label (e.g. "ago" or "from
+// now") and a "%d" that will be replaced by the quantity.
+//
+// The DivBy field is the amount of time the time difference must be
+// divided by in order to display correctly.
+//
+// e.g. if D is 2*time.Minute and you want to display "%d minutes %s"
+// DivBy should be time.Minute so whatever the duration is will be
+// expressed in minutes.
+type RelTimeMagnitude struct {
+	D      time.Duration
+	Format string
+	DivBy  time.Duration
+}
+
+var defaultMagnitudes = []RelTimeMagnitude{
+	{time.Second, "now", time.Second},
+	{2 * time.Second, "1 second %s", 1},
+	{time.Minute, "%d seconds %s", time.Second},
+	{2 * time.Minute, "1 minute %s", 1},
+	{time.Hour, "%d minutes %s", time.Minute},
+	{2 * time.Hour, "1 hour %s", 1},
+	{Day, "%d hours %s", time.Hour},
+	{2 * Day, "1 day %s", 1},
+	{Week, "%d days %s", Day},
+	{2 * Week, "1 week %s", 1},
+	{Month, "%d weeks %s", Week},
+	{2 * Month, "1 month %s", 1},
+	{Year, "%d months %s", Month},
+	{18 * Month, "1 year %s", 1},
+	{2 * Year, "2 years %s", 1},
+	{LongTime, "%d years %s", Year},
+	{math.MaxInt64, "a long while %s", 1},
+}
+
+// RelTime formats a time into a relative string.
+//
+// It takes two times and two labels.  In addition to the generic time
+// delta string (e.g. 5 minutes), the labels are used applied so that
+// the label corresponding to the smaller time is applied.
+//
+// RelTime(timeInPast, timeInFuture, "earlier", "later") -> "3 weeks earlier"
+func RelTime(a, b time.Time, albl, blbl string) string {
+	return CustomRelTime(a, b, albl, blbl, defaultMagnitudes)
+}
+
+// CustomRelTime formats a time into a relative string.
+//
+// It takes two times two labels and a table of relative time formats.
+// In addition to the generic time delta string (e.g. 5 minutes), the
+// labels are used applied so that the label corresponding to the
+// smaller time is applied.
+func CustomRelTime(a, b time.Time, albl, blbl string, magnitudes []RelTimeMagnitude) string {
+	lbl := albl
+	diff := b.Sub(a)
+
+	if a.After(b) {
+		lbl = blbl
+		diff = a.Sub(b)
+	}
+
+	n := sort.Search(len(magnitudes), func(i int) bool {
+		return magnitudes[i].D >= diff
+	})
+
+	if n >= len(magnitudes) {
+		n = len(magnitudes) - 1
+	}
+	mag := magnitudes[n]
+	args := []interface{}{}
+	escaped := false
+	for _, ch := range mag.Format {
+		if escaped {
+			switch ch {
+			case 's':
+				args = append(args, lbl)
+			case 'd':
+				args = append(args, diff/mag.DivBy)
+			}
+			escaped = false
+		} else {
+			escaped = ch == '%'
+		}
+	}
+	return fmt.Sprintf(mag.Format, args...)
+}

vendor/github.com/gorilla/websocket/AUTHORS

@@ -0,0 +1,8 @@
+# This is the official list of Gorilla WebSocket authors for copyright
+# purposes.
+#
+# Please keep the list sorted.
+
+Gary Burd <gary@beagledreams.com>
+Joachim Bauch <mail@joachim-bauch.de>
+

vendor/github.com/gorilla/websocket/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+  Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/gorilla/websocket/README.md

@@ -0,0 +1,64 @@
+# Gorilla WebSocket
+
+Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
+[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
+
+[![Build Status](https://travis-ci.org/gorilla/websocket.svg?branch=master)](https://travis-ci.org/gorilla/websocket)
+[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
+
+### Documentation
+
+* [API Reference](http://godoc.org/github.com/gorilla/websocket)
+* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
+* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
+* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
+* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
+
+### Status
+
+The Gorilla WebSocket package provides a complete and tested implementation of
+the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
+package API is stable.
+
+### Installation
+
+    go get github.com/gorilla/websocket
+
+### Protocol Compliance
+
+The Gorilla WebSocket package passes the server tests in the [Autobahn Test
+Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
+subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
+
+### Gorilla WebSocket compared with other packages
+
+<table>
+<tr>
+<th></th>
+<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
+<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
+</tr>
+<tr>
+<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
+<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
+<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
+<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
+<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
+<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
+<tr><td colspan="3">Other Features</tr></td>
+<tr><td><a href="https://tools.ietf.org/html/rfc7692">Compression Extensions</a></td><td>Experimental</td><td>No</td></tr>
+<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
+<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
+</table>
+
+Notes: 
+
+1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
+2. The application can get the type of a received data message by implementing
+   a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
+   function.
+3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
+  Read returns when the input buffer is full or a frame boundary is
+  encountered. Each call to Write sends a single frame message. The Gorilla
+  io.Reader and io.WriteCloser operate on a single WebSocket message.
+

vendor/github.com/gorilla/websocket/client.go

@@ -0,0 +1,392 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bufio"
+	"bytes"
+	"crypto/tls"
+	"encoding/base64"
+	"errors"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// ErrBadHandshake is returned when the server response to opening handshake is
+// invalid.
+var ErrBadHandshake = errors.New("websocket: bad handshake")
+
+var errInvalidCompression = errors.New("websocket: invalid compression negotiation")
+
+// NewClient creates a new client connection using the given net connection.
+// The URL u specifies the host and request URI. Use requestHeader to specify
+// the origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies
+// (Cookie). Use the response.Header to get the selected subprotocol
+// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
+//
+// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
+// non-nil *http.Response so that callers can handle redirects, authentication,
+// etc.
+//
+// Deprecated: Use Dialer instead.
+func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufSize, writeBufSize int) (c *Conn, response *http.Response, err error) {
+	d := Dialer{
+		ReadBufferSize:  readBufSize,
+		WriteBufferSize: writeBufSize,
+		NetDial: func(net, addr string) (net.Conn, error) {
+			return netConn, nil
+		},
+	}
+	return d.Dial(u.String(), requestHeader)
+}
+
+// A Dialer contains options for connecting to WebSocket server.
+type Dialer struct {
+	// NetDial specifies the dial function for creating TCP connections. If
+	// NetDial is nil, net.Dial is used.
+	NetDial func(network, addr string) (net.Conn, error)
+
+	// Proxy specifies a function to return a proxy for a given
+	// Request. If the function returns a non-nil error, the
+	// request is aborted with the provided error.
+	// If Proxy is nil or returns a nil *URL, no proxy is used.
+	Proxy func(*http.Request) (*url.URL, error)
+
+	// TLSClientConfig specifies the TLS configuration to use with tls.Client.
+	// If nil, the default configuration is used.
+	TLSClientConfig *tls.Config
+
+	// HandshakeTimeout specifies the duration for the handshake to complete.
+	HandshakeTimeout time.Duration
+
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
+	// size is zero, then a useful default size is used. The I/O buffer sizes
+	// do not limit the size of the messages that can be sent or received.
+	ReadBufferSize, WriteBufferSize int
+
+	// Subprotocols specifies the client's requested subprotocols.
+	Subprotocols []string
+
+	// EnableCompression specifies if the client should attempt to negotiate
+	// per message compression (RFC 7692). Setting this value to true does not
+	// guarantee that compression will be supported. Currently only "no context
+	// takeover" modes are supported.
+	EnableCompression bool
+
+	// Jar specifies the cookie jar.
+	// If Jar is nil, cookies are not sent in requests and ignored
+	// in responses.
+	Jar http.CookieJar
+}
+
+var errMalformedURL = errors.New("malformed ws or wss URL")
+
+// parseURL parses the URL.
+//
+// This function is a replacement for the standard library url.Parse function.
+// In Go 1.4 and earlier, url.Parse loses information from the path.
+func parseURL(s string) (*url.URL, error) {
+	// From the RFC:
+	//
+	// ws-URI = "ws:" "//" host [ ":" port ] path [ "?" query ]
+	// wss-URI = "wss:" "//" host [ ":" port ] path [ "?" query ]
+	var u url.URL
+	switch {
+	case strings.HasPrefix(s, "ws://"):
+		u.Scheme = "ws"
+		s = s[len("ws://"):]
+	case strings.HasPrefix(s, "wss://"):
+		u.Scheme = "wss"
+		s = s[len("wss://"):]
+	default:
+		return nil, errMalformedURL
+	}
+
+	if i := strings.Index(s, "?"); i >= 0 {
+		u.RawQuery = s[i+1:]
+		s = s[:i]
+	}
+
+	if i := strings.Index(s, "/"); i >= 0 {
+		u.Opaque = s[i:]
+		s = s[:i]
+	} else {
+		u.Opaque = "/"
+	}
+
+	u.Host = s
+
+	if strings.Contains(u.Host, "@") {
+		// Don't bother parsing user information because user information is
+		// not allowed in websocket URIs.
+		return nil, errMalformedURL
+	}
+
+	return &u, nil
+}
+
+func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
+	hostPort = u.Host
+	hostNoPort = u.Host
+	if i := strings.LastIndex(u.Host, ":"); i > strings.LastIndex(u.Host, "]") {
+		hostNoPort = hostNoPort[:i]
+	} else {
+		switch u.Scheme {
+		case "wss":
+			hostPort += ":443"
+		case "https":
+			hostPort += ":443"
+		default:
+			hostPort += ":80"
+		}
+	}
+	return hostPort, hostNoPort
+}
+
+// DefaultDialer is a dialer with all fields set to the default zero values.
+var DefaultDialer = &Dialer{
+	Proxy: http.ProxyFromEnvironment,
+}
+
+// Dial creates a new client connection. Use requestHeader to specify the
+// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
+// Use the response.Header to get the selected subprotocol
+// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
+//
+// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
+// non-nil *http.Response so that callers can handle redirects, authentication,
+// etcetera. The response body may not contain the entire response and does not
+// need to be closed by the application.
+func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
+
+	if d == nil {
+		d = &Dialer{
+			Proxy: http.ProxyFromEnvironment,
+		}
+	}
+
+	challengeKey, err := generateChallengeKey()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	u, err := parseURL(urlStr)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	switch u.Scheme {
+	case "ws":
+		u.Scheme = "http"
+	case "wss":
+		u.Scheme = "https"
+	default:
+		return nil, nil, errMalformedURL
+	}
+
+	if u.User != nil {
+		// User name and password are not allowed in websocket URIs.
+		return nil, nil, errMalformedURL
+	}
+
+	req := &http.Request{
+		Method:     "GET",
+		URL:        u,
+		Proto:      "HTTP/1.1",
+		ProtoMajor: 1,
+		ProtoMinor: 1,
+		Header:     make(http.Header),
+		Host:       u.Host,
+	}
+
+	// Set the cookies present in the cookie jar of the dialer
+	if d.Jar != nil {
+		for _, cookie := range d.Jar.Cookies(u) {
+			req.AddCookie(cookie)
+		}
+	}
+
+	// Set the request headers using the capitalization for names and values in
+	// RFC examples. Although the capitalization shouldn't matter, there are
+	// servers that depend on it. The Header.Set method is not used because the
+	// method canonicalizes the header names.
+	req.Header["Upgrade"] = []string{"websocket"}
+	req.Header["Connection"] = []string{"Upgrade"}
+	req.Header["Sec-WebSocket-Key"] = []string{challengeKey}
+	req.Header["Sec-WebSocket-Version"] = []string{"13"}
+	if len(d.Subprotocols) > 0 {
+		req.Header["Sec-WebSocket-Protocol"] = []string{strings.Join(d.Subprotocols, ", ")}
+	}
+	for k, vs := range requestHeader {
+		switch {
+		case k == "Host":
+			if len(vs) > 0 {
+				req.Host = vs[0]
+			}
+		case k == "Upgrade" ||
+			k == "Connection" ||
+			k == "Sec-Websocket-Key" ||
+			k == "Sec-Websocket-Version" ||
+			k == "Sec-Websocket-Extensions" ||
+			(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
+			return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
+		default:
+			req.Header[k] = vs
+		}
+	}
+
+	if d.EnableCompression {
+		req.Header.Set("Sec-Websocket-Extensions", "permessage-deflate; server_no_context_takeover; client_no_context_takeover")
+	}
+
+	hostPort, hostNoPort := hostPortNoPort(u)
+
+	var proxyURL *url.URL
+	// Check wether the proxy method has been configured
+	if d.Proxy != nil {
+		proxyURL, err = d.Proxy(req)
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var targetHostPort string
+	if proxyURL != nil {
+		targetHostPort, _ = hostPortNoPort(proxyURL)
+	} else {
+		targetHostPort = hostPort
+	}
+
+	var deadline time.Time
+	if d.HandshakeTimeout != 0 {
+		deadline = time.Now().Add(d.HandshakeTimeout)
+	}
+
+	netDial := d.NetDial
+	if netDial == nil {
+		netDialer := &net.Dialer{Deadline: deadline}
+		netDial = netDialer.Dial
+	}
+
+	netConn, err := netDial("tcp", targetHostPort)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	defer func() {
+		if netConn != nil {
+			netConn.Close()
+		}
+	}()
+
+	if err := netConn.SetDeadline(deadline); err != nil {
+		return nil, nil, err
+	}
+
+	if proxyURL != nil {
+		connectHeader := make(http.Header)
+		if user := proxyURL.User; user != nil {
+			proxyUser := user.Username()
+			if proxyPassword, passwordSet := user.Password(); passwordSet {
+				credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
+				connectHeader.Set("Proxy-Authorization", "Basic "+credential)
+			}
+		}
+		connectReq := &http.Request{
+			Method: "CONNECT",
+			URL:    &url.URL{Opaque: hostPort},
+			Host:   hostPort,
+			Header: connectHeader,
+		}
+
+		connectReq.Write(netConn)
+
+		// Read response.
+		// Okay to use and discard buffered reader here, because
+		// TLS server will not speak until spoken to.
+		br := bufio.NewReader(netConn)
+		resp, err := http.ReadResponse(br, connectReq)
+		if err != nil {
+			return nil, nil, err
+		}
+		if resp.StatusCode != 200 {
+			f := strings.SplitN(resp.Status, " ", 2)
+			return nil, nil, errors.New(f[1])
+		}
+	}
+
+	if u.Scheme == "https" {
+		cfg := cloneTLSConfig(d.TLSClientConfig)
+		if cfg.ServerName == "" {
+			cfg.ServerName = hostNoPort
+		}
+		tlsConn := tls.Client(netConn, cfg)
+		netConn = tlsConn
+		if err := tlsConn.Handshake(); err != nil {
+			return nil, nil, err
+		}
+		if !cfg.InsecureSkipVerify {
+			if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
+				return nil, nil, err
+			}
+		}
+	}
+
+	conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize)
+
+	if err := req.Write(netConn); err != nil {
+		return nil, nil, err
+	}
+
+	resp, err := http.ReadResponse(conn.br, req)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if d.Jar != nil {
+		if rc := resp.Cookies(); len(rc) > 0 {
+			d.Jar.SetCookies(u, rc)
+		}
+	}
+
+	if resp.StatusCode != 101 ||
+		!strings.EqualFold(resp.Header.Get("Upgrade"), "websocket") ||
+		!strings.EqualFold(resp.Header.Get("Connection"), "upgrade") ||
+		resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
+		// Before closing the network connection on return from this
+		// function, slurp up some of the response to aid application
+		// debugging.
+		buf := make([]byte, 1024)
+		n, _ := io.ReadFull(resp.Body, buf)
+		resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
+		return nil, resp, ErrBadHandshake
+	}
+
+	for _, ext := range parseExtensions(resp.Header) {
+		if ext[""] != "permessage-deflate" {
+			continue
+		}
+		_, snct := ext["server_no_context_takeover"]
+		_, cnct := ext["client_no_context_takeover"]
+		if !snct || !cnct {
+			return nil, resp, errInvalidCompression
+		}
+		conn.newCompressionWriter = compressNoContextTakeover
+		conn.newDecompressionReader = decompressNoContextTakeover
+		break
+	}
+
+	resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
+	conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
+
+	netConn.SetDeadline(time.Time{})
+	netConn = nil // to avoid close in defer.
+	return conn, resp, nil
+}

vendor/github.com/gorilla/websocket/client_clone.go

@@ -0,0 +1,16 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.8
+
+package websocket
+
+import "crypto/tls"
+
+func cloneTLSConfig(cfg *tls.Config) *tls.Config {
+	if cfg == nil {
+		return &tls.Config{}
+	}
+	return cfg.Clone()
+}

vendor/github.com/gorilla/websocket/client_clone_legacy.go

@@ -0,0 +1,38 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.8
+
+package websocket
+
+import "crypto/tls"
+
+// cloneTLSConfig clones all public fields except the fields
+// SessionTicketsDisabled and SessionTicketKey. This avoids copying the
+// sync.Mutex in the sync.Once and makes it safe to call cloneTLSConfig on a
+// config in active use.
+func cloneTLSConfig(cfg *tls.Config) *tls.Config {
+	if cfg == nil {
+		return &tls.Config{}
+	}
+	return &tls.Config{
+		Rand:                     cfg.Rand,
+		Time:                     cfg.Time,
+		Certificates:             cfg.Certificates,
+		NameToCertificate:        cfg.NameToCertificate,
+		GetCertificate:           cfg.GetCertificate,
+		RootCAs:                  cfg.RootCAs,
+		NextProtos:               cfg.NextProtos,
+		ServerName:               cfg.ServerName,
+		ClientAuth:               cfg.ClientAuth,
+		ClientCAs:                cfg.ClientCAs,
+		InsecureSkipVerify:       cfg.InsecureSkipVerify,
+		CipherSuites:             cfg.CipherSuites,
+		PreferServerCipherSuites: cfg.PreferServerCipherSuites,
+		ClientSessionCache:       cfg.ClientSessionCache,
+		MinVersion:               cfg.MinVersion,
+		MaxVersion:               cfg.MaxVersion,
+		CurvePreferences:         cfg.CurvePreferences,
+	}
+}

vendor/github.com/gorilla/websocket/compression.go

@@ -0,0 +1,148 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"compress/flate"
+	"errors"
+	"io"
+	"strings"
+	"sync"
+)
+
+const (
+	minCompressionLevel     = -2 // flate.HuffmanOnly not defined in Go < 1.6
+	maxCompressionLevel     = flate.BestCompression
+	defaultCompressionLevel = 1
+)
+
+var (
+	flateWriterPools [maxCompressionLevel - minCompressionLevel + 1]sync.Pool
+	flateReaderPool  = sync.Pool{New: func() interface{} {
+		return flate.NewReader(nil)
+	}}
+)
+
+func decompressNoContextTakeover(r io.Reader) io.ReadCloser {
+	const tail =
+	// Add four bytes as specified in RFC
+	"\x00\x00\xff\xff" +
+		// Add final block to squelch unexpected EOF error from flate reader.
+		"\x01\x00\x00\xff\xff"
+
+	fr, _ := flateReaderPool.Get().(io.ReadCloser)
+	fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil)
+	return &flateReadWrapper{fr}
+}
+
+func isValidCompressionLevel(level int) bool {
+	return minCompressionLevel <= level && level <= maxCompressionLevel
+}
+
+func compressNoContextTakeover(w io.WriteCloser, level int) io.WriteCloser {
+	p := &flateWriterPools[level-minCompressionLevel]
+	tw := &truncWriter{w: w}
+	fw, _ := p.Get().(*flate.Writer)
+	if fw == nil {
+		fw, _ = flate.NewWriter(tw, level)
+	} else {
+		fw.Reset(tw)
+	}
+	return &flateWriteWrapper{fw: fw, tw: tw, p: p}
+}
+
+// truncWriter is an io.Writer that writes all but the last four bytes of the
+// stream to another io.Writer.
+type truncWriter struct {
+	w io.WriteCloser
+	n int
+	p [4]byte
+}
+
+func (w *truncWriter) Write(p []byte) (int, error) {
+	n := 0
+
+	// fill buffer first for simplicity.
+	if w.n < len(w.p) {
+		n = copy(w.p[w.n:], p)
+		p = p[n:]
+		w.n += n
+		if len(p) == 0 {
+			return n, nil
+		}
+	}
+
+	m := len(p)
+	if m > len(w.p) {
+		m = len(w.p)
+	}
+
+	if nn, err := w.w.Write(w.p[:m]); err != nil {
+		return n + nn, err
+	}
+
+	copy(w.p[:], w.p[m:])
+	copy(w.p[len(w.p)-m:], p[len(p)-m:])
+	nn, err := w.w.Write(p[:len(p)-m])
+	return n + nn, err
+}
+
+type flateWriteWrapper struct {
+	fw *flate.Writer
+	tw *truncWriter
+	p  *sync.Pool
+}
+
+func (w *flateWriteWrapper) Write(p []byte) (int, error) {
+	if w.fw == nil {
+		return 0, errWriteClosed
+	}
+	return w.fw.Write(p)
+}
+
+func (w *flateWriteWrapper) Close() error {
+	if w.fw == nil {
+		return errWriteClosed
+	}
+	err1 := w.fw.Flush()
+	w.p.Put(w.fw)
+	w.fw = nil
+	if w.tw.p != [4]byte{0, 0, 0xff, 0xff} {
+		return errors.New("websocket: internal error, unexpected bytes at end of flate stream")
+	}
+	err2 := w.tw.w.Close()
+	if err1 != nil {
+		return err1
+	}
+	return err2
+}
+
+type flateReadWrapper struct {
+	fr io.ReadCloser
+}
+
+func (r *flateReadWrapper) Read(p []byte) (int, error) {
+	if r.fr == nil {
+		return 0, io.ErrClosedPipe
+	}
+	n, err := r.fr.Read(p)
+	if err == io.EOF {
+		// Preemptively place the reader back in the pool. This helps with
+		// scenarios where the application does not call NextReader() soon after
+		// this final read.
+		r.Close()
+	}
+	return n, err
+}
+
+func (r *flateReadWrapper) Close() error {
+	if r.fr == nil {
+		return io.ErrClosedPipe
+	}
+	err := r.fr.Close()
+	flateReaderPool.Put(r.fr)
+	r.fr = nil
+	return err
+}

vendor/github.com/gorilla/websocket/conn_read.go

@@ -0,0 +1,18 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.5
+
+package websocket
+
+import "io"
+
+func (c *Conn) read(n int) ([]byte, error) {
+	p, err := c.br.Peek(n)
+	if err == io.EOF {
+		err = errUnexpectedEOF
+	}
+	c.br.Discard(len(p))
+	return p, err
+}

vendor/github.com/gorilla/websocket/conn_read_legacy.go

@@ -0,0 +1,21 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.5
+
+package websocket
+
+import "io"
+
+func (c *Conn) read(n int) ([]byte, error) {
+	p, err := c.br.Peek(n)
+	if err == io.EOF {
+		err = errUnexpectedEOF
+	}
+	if len(p) > 0 {
+		// advance over the bytes just read
+		io.ReadFull(c.br, p)
+	}
+	return p, err
+}

vendor/github.com/gorilla/websocket/doc.go

@@ -0,0 +1,180 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package websocket implements the WebSocket protocol defined in RFC 6455.
+//
+// Overview
+//
+// The Conn type represents a WebSocket connection. A server application uses
+// the Upgrade function from an Upgrader object with a HTTP request handler
+// to get a pointer to a Conn:
+//
+//  var upgrader = websocket.Upgrader{
+//      ReadBufferSize:  1024,
+//      WriteBufferSize: 1024,
+//  }
+//
+//  func handler(w http.ResponseWriter, r *http.Request) {
+//      conn, err := upgrader.Upgrade(w, r, nil)
+//      if err != nil {
+//          log.Println(err)
+//          return
+//      }
+//      ... Use conn to send and receive messages.
+//  }
+//
+// Call the connection's WriteMessage and ReadMessage methods to send and
+// receive messages as a slice of bytes. This snippet of code shows how to echo
+// messages using these methods:
+//
+//  for {
+//      messageType, p, err := conn.ReadMessage()
+//      if err != nil {
+//          return
+//      }
+//      if err = conn.WriteMessage(messageType, p); err != nil {
+//          return err
+//      }
+//  }
+//
+// In above snippet of code, p is a []byte and messageType is an int with value
+// websocket.BinaryMessage or websocket.TextMessage.
+//
+// An application can also send and receive messages using the io.WriteCloser
+// and io.Reader interfaces. To send a message, call the connection NextWriter
+// method to get an io.WriteCloser, write the message to the writer and close
+// the writer when done. To receive a message, call the connection NextReader
+// method to get an io.Reader and read until io.EOF is returned. This snippet
+// shows how to echo messages using the NextWriter and NextReader methods:
+//
+//  for {
+//      messageType, r, err := conn.NextReader()
+//      if err != nil {
+//          return
+//      }
+//      w, err := conn.NextWriter(messageType)
+//      if err != nil {
+//          return err
+//      }
+//      if _, err := io.Copy(w, r); err != nil {
+//          return err
+//      }
+//      if err := w.Close(); err != nil {
+//          return err
+//      }
+//  }
+//
+// Data Messages
+//
+// The WebSocket protocol distinguishes between text and binary data messages.
+// Text messages are interpreted as UTF-8 encoded text. The interpretation of
+// binary messages is left to the application.
+//
+// This package uses the TextMessage and BinaryMessage integer constants to
+// identify the two data message types. The ReadMessage and NextReader methods
+// return the type of the received message. The messageType argument to the
+// WriteMessage and NextWriter methods specifies the type of a sent message.
+//
+// It is the application's responsibility to ensure that text messages are
+// valid UTF-8 encoded text.
+//
+// Control Messages
+//
+// The WebSocket protocol defines three types of control messages: close, ping
+// and pong. Call the connection WriteControl, WriteMessage or NextWriter
+// methods to send a control message to the peer.
+//
+// Connections handle received close messages by sending a close message to the
+// peer and returning a *CloseError from the the NextReader, ReadMessage or the
+// message Read method.
+//
+// Connections handle received ping and pong messages by invoking callback
+// functions set with SetPingHandler and SetPongHandler methods. The callback
+// functions are called from the NextReader, ReadMessage and the message Read
+// methods.
+//
+// The default ping handler sends a pong to the peer. The application's reading
+// goroutine can block for a short time while the handler writes the pong data
+// to the connection.
+//
+// The application must read the connection to process ping, pong and close
+// messages sent from the peer. If the application is not otherwise interested
+// in messages from the peer, then the application should start a goroutine to
+// read and discard messages from the peer. A simple example is:
+//
+//  func readLoop(c *websocket.Conn) {
+//      for {
+//          if _, _, err := c.NextReader(); err != nil {
+//              c.Close()
+//              break
+//          }
+//      }
+//  }
+//
+// Concurrency
+//
+// Connections support one concurrent reader and one concurrent writer.
+//
+// Applications are responsible for ensuring that no more than one goroutine
+// calls the write methods (NextWriter, SetWriteDeadline, WriteMessage,
+// WriteJSON, EnableWriteCompression, SetCompressionLevel) concurrently and
+// that no more than one goroutine calls the read methods (NextReader,
+// SetReadDeadline, ReadMessage, ReadJSON, SetPongHandler, SetPingHandler)
+// concurrently.
+//
+// The Close and WriteControl methods can be called concurrently with all other
+// methods.
+//
+// Origin Considerations
+//
+// Web browsers allow Javascript applications to open a WebSocket connection to
+// any host. It's up to the server to enforce an origin policy using the Origin
+// request header sent by the browser.
+//
+// The Upgrader calls the function specified in the CheckOrigin field to check
+// the origin. If the CheckOrigin function returns false, then the Upgrade
+// method fails the WebSocket handshake with HTTP status 403.
+//
+// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
+// the handshake if the Origin request header is present and not equal to the
+// Host request header.
+//
+// An application can allow connections from any origin by specifying a
+// function that always returns true:
+//
+//  var upgrader = websocket.Upgrader{
+//      CheckOrigin: func(r *http.Request) bool { return true },
+//  }
+//
+// The deprecated Upgrade function does not enforce an origin policy. It's the
+// application's responsibility to check the Origin header before calling
+// Upgrade.
+//
+// Compression EXPERIMENTAL
+//
+// Per message compression extensions (RFC 7692) are experimentally supported
+// by this package in a limited capacity. Setting the EnableCompression option
+// to true in Dialer or Upgrader will attempt to negotiate per message deflate
+// support.
+//
+//  var upgrader = websocket.Upgrader{
+//      EnableCompression: true,
+//  }
+//
+// If compression was successfully negotiated with the connection's peer, any
+// message received in compressed form will be automatically decompressed.
+// All Read methods will return uncompressed bytes.
+//
+// Per message compression of messages written to a connection can be enabled
+// or disabled by calling the corresponding Conn method:
+//
+//  conn.EnableWriteCompression(false)
+//
+// Currently this package does not support compression with "context takeover".
+// This means that messages must be compressed and decompressed in isolation,
+// without retaining sliding window or dictionary state across messages. For
+// more details refer to RFC 7692.
+//
+// Use of compression is experimental and may result in decreased performance.
+package websocket

vendor/github.com/gorilla/websocket/json.go

@@ -0,0 +1,55 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"encoding/json"
+	"io"
+)
+
+// WriteJSON is deprecated, use c.WriteJSON instead.
+func WriteJSON(c *Conn, v interface{}) error {
+	return c.WriteJSON(v)
+}
+
+// WriteJSON writes the JSON encoding of v to the connection.
+//
+// See the documentation for encoding/json Marshal for details about the
+// conversion of Go values to JSON.
+func (c *Conn) WriteJSON(v interface{}) error {
+	w, err := c.NextWriter(TextMessage)
+	if err != nil {
+		return err
+	}
+	err1 := json.NewEncoder(w).Encode(v)
+	err2 := w.Close()
+	if err1 != nil {
+		return err1
+	}
+	return err2
+}
+
+// ReadJSON is deprecated, use c.ReadJSON instead.
+func ReadJSON(c *Conn, v interface{}) error {
+	return c.ReadJSON(v)
+}
+
+// ReadJSON reads the next JSON-encoded message from the connection and stores
+// it in the value pointed to by v.
+//
+// See the documentation for the encoding/json Unmarshal function for details
+// about the conversion of JSON to a Go value.
+func (c *Conn) ReadJSON(v interface{}) error {
+	_, r, err := c.NextReader()
+	if err != nil {
+		return err
+	}
+	err = json.NewDecoder(r).Decode(v)
+	if err == io.EOF {
+		// One value is expected in the message.
+		err = io.ErrUnexpectedEOF
+	}
+	return err
+}

vendor/github.com/gorilla/websocket/mask.go

@@ -0,0 +1,55 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.  Use of
+// this source code is governed by a BSD-style license that can be found in the
+// LICENSE file.
+
+// +build !appengine
+
+package websocket
+
+import "unsafe"
+
+const wordSize = int(unsafe.Sizeof(uintptr(0)))
+
+func maskBytes(key [4]byte, pos int, b []byte) int {
+
+	// Mask one byte at a time for small buffers.
+	if len(b) < 2*wordSize {
+		for i := range b {
+			b[i] ^= key[pos&3]
+			pos++
+		}
+		return pos & 3
+	}
+
+	// Mask one byte at a time to word boundary.
+	if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
+		n = wordSize - n
+		for i := range b[:n] {
+			b[i] ^= key[pos&3]
+			pos++
+		}
+		b = b[n:]
+	}
+
+	// Create aligned word size key.
+	var k [wordSize]byte
+	for i := range k {
+		k[i] = key[(pos+i)&3]
+	}
+	kw := *(*uintptr)(unsafe.Pointer(&k))
+
+	// Mask one word at a time.
+	n := (len(b) / wordSize) * wordSize
+	for i := 0; i < n; i += wordSize {
+		*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&b[0])) + uintptr(i))) ^= kw
+	}
+
+	// Mask one byte at a time for remaining bytes.
+	b = b[n:]
+	for i := range b {
+		b[i] ^= key[pos&3]
+		pos++
+	}
+
+	return pos & 3
+}

vendor/github.com/gorilla/websocket/prepared.go

@@ -0,0 +1,103 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bytes"
+	"net"
+	"sync"
+	"time"
+)
+
+// PreparedMessage caches on the wire representations of a message payload.
+// Use PreparedMessage to efficiently send a message payload to multiple
+// connections. PreparedMessage is especially useful when compression is used
+// because the CPU and memory expensive compression operation can be executed
+// once for a given set of compression options.
+type PreparedMessage struct {
+	messageType int
+	data        []byte
+	err         error
+	mu          sync.Mutex
+	frames      map[prepareKey]*preparedFrame
+}
+
+// prepareKey defines a unique set of options to cache prepared frames in PreparedMessage.
+type prepareKey struct {
+	isServer         bool
+	compress         bool
+	compressionLevel int
+}
+
+// preparedFrame contains data in wire representation.
+type preparedFrame struct {
+	once sync.Once
+	data []byte
+}
+
+// NewPreparedMessage returns an initialized PreparedMessage. You can then send
+// it to connection using WritePreparedMessage method. Valid wire
+// representation will be calculated lazily only once for a set of current
+// connection options.
+func NewPreparedMessage(messageType int, data []byte) (*PreparedMessage, error) {
+	pm := &PreparedMessage{
+		messageType: messageType,
+		frames:      make(map[prepareKey]*preparedFrame),
+		data:        data,
+	}
+
+	// Prepare a plain server frame.
+	_, frameData, err := pm.frame(prepareKey{isServer: true, compress: false})
+	if err != nil {
+		return nil, err
+	}
+
+	// To protect against caller modifying the data argument, remember the data
+	// copied to the plain server frame.
+	pm.data = frameData[len(frameData)-len(data):]
+	return pm, nil
+}
+
+func (pm *PreparedMessage) frame(key prepareKey) (int, []byte, error) {
+	pm.mu.Lock()
+	frame, ok := pm.frames[key]
+	if !ok {
+		frame = &preparedFrame{}
+		pm.frames[key] = frame
+	}
+	pm.mu.Unlock()
+
+	var err error
+	frame.once.Do(func() {
+		// Prepare a frame using a 'fake' connection.
+		// TODO: Refactor code in conn.go to allow more direct construction of
+		// the frame.
+		mu := make(chan bool, 1)
+		mu <- true
+		var nc prepareConn
+		c := &Conn{
+			conn:                   &nc,
+			mu:                     mu,
+			isServer:               key.isServer,
+			compressionLevel:       key.compressionLevel,
+			enableWriteCompression: true,
+			writeBuf:               make([]byte, defaultWriteBufferSize+maxFrameHeaderSize),
+		}
+		if key.compress {
+			c.newCompressionWriter = compressNoContextTakeover
+		}
+		err = c.WriteMessage(pm.messageType, pm.data)
+		frame.data = nc.buf.Bytes()
+	})
+	return pm.messageType, frame.data, err
+}
+
+type prepareConn struct {
+	buf bytes.Buffer
+	net.Conn
+}
+
+func (pc *prepareConn) Write(p []byte) (int, error)        { return pc.buf.Write(p) }
+func (pc *prepareConn) SetWriteDeadline(t time.Time) error { return nil }

vendor/github.com/gorilla/websocket/server.go

@@ -0,0 +1,291 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bufio"
+	"errors"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// HandshakeError describes an error with the handshake from the peer.
+type HandshakeError struct {
+	message string
+}
+
+func (e HandshakeError) Error() string { return e.message }
+
+// Upgrader specifies parameters for upgrading an HTTP connection to a
+// WebSocket connection.
+type Upgrader struct {
+	// HandshakeTimeout specifies the duration for the handshake to complete.
+	HandshakeTimeout time.Duration
+
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
+	// size is zero, then buffers allocated by the HTTP server are used. The
+	// I/O buffer sizes do not limit the size of the messages that can be sent
+	// or received.
+	ReadBufferSize, WriteBufferSize int
+
+	// Subprotocols specifies the server's supported protocols in order of
+	// preference. If this field is set, then the Upgrade method negotiates a
+	// subprotocol by selecting the first match in this list with a protocol
+	// requested by the client.
+	Subprotocols []string
+
+	// Error specifies the function for generating HTTP error responses. If Error
+	// is nil, then http.Error is used to generate the HTTP response.
+	Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
+
+	// CheckOrigin returns true if the request Origin header is acceptable. If
+	// CheckOrigin is nil, the host in the Origin header must not be set or
+	// must match the host of the request.
+	CheckOrigin func(r *http.Request) bool
+
+	// EnableCompression specify if the server should attempt to negotiate per
+	// message compression (RFC 7692). Setting this value to true does not
+	// guarantee that compression will be supported. Currently only "no context
+	// takeover" modes are supported.
+	EnableCompression bool
+}
+
+func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
+	err := HandshakeError{reason}
+	if u.Error != nil {
+		u.Error(w, r, status, err)
+	} else {
+		w.Header().Set("Sec-Websocket-Version", "13")
+		http.Error(w, http.StatusText(status), status)
+	}
+	return nil, err
+}
+
+// checkSameOrigin returns true if the origin is not set or is equal to the request host.
+func checkSameOrigin(r *http.Request) bool {
+	origin := r.Header["Origin"]
+	if len(origin) == 0 {
+		return true
+	}
+	u, err := url.Parse(origin[0])
+	if err != nil {
+		return false
+	}
+	return u.Host == r.Host
+}
+
+func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
+	if u.Subprotocols != nil {
+		clientProtocols := Subprotocols(r)
+		for _, serverProtocol := range u.Subprotocols {
+			for _, clientProtocol := range clientProtocols {
+				if clientProtocol == serverProtocol {
+					return clientProtocol
+				}
+			}
+		}
+	} else if responseHeader != nil {
+		return responseHeader.Get("Sec-Websocket-Protocol")
+	}
+	return ""
+}
+
+// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
+//
+// The responseHeader is included in the response to the client's upgrade
+// request. Use the responseHeader to specify cookies (Set-Cookie) and the
+// application negotiated subprotocol (Sec-Websocket-Protocol).
+//
+// If the upgrade fails, then Upgrade replies to the client with an HTTP error
+// response.
+func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
+	if r.Method != "GET" {
+		return u.returnError(w, r, http.StatusMethodNotAllowed, "websocket: not a websocket handshake: request method is not GET")
+	}
+
+	if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
+		return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-Websocket-Extensions' headers are unsupported")
+	}
+
+	if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'upgrade' token not found in 'Connection' header")
+	}
+
+	if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'websocket' token not found in 'Upgrade' header")
+	}
+
+	if !tokenListContainsValue(r.Header, "Sec-Websocket-Version", "13") {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: unsupported version: 13 not found in 'Sec-Websocket-Version' header")
+	}
+
+	checkOrigin := u.CheckOrigin
+	if checkOrigin == nil {
+		checkOrigin = checkSameOrigin
+	}
+	if !checkOrigin(r) {
+		return u.returnError(w, r, http.StatusForbidden, "websocket: 'Origin' header value not allowed")
+	}
+
+	challengeKey := r.Header.Get("Sec-Websocket-Key")
+	if challengeKey == "" {
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-Websocket-Key' header is missing or blank")
+	}
+
+	subprotocol := u.selectSubprotocol(r, responseHeader)
+
+	// Negotiate PMCE
+	var compress bool
+	if u.EnableCompression {
+		for _, ext := range parseExtensions(r.Header) {
+			if ext[""] != "permessage-deflate" {
+				continue
+			}
+			compress = true
+			break
+		}
+	}
+
+	var (
+		netConn net.Conn
+		err     error
+	)
+
+	h, ok := w.(http.Hijacker)
+	if !ok {
+		return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
+	}
+	var brw *bufio.ReadWriter
+	netConn, brw, err = h.Hijack()
+	if err != nil {
+		return u.returnError(w, r, http.StatusInternalServerError, err.Error())
+	}
+
+	if brw.Reader.Buffered() > 0 {
+		netConn.Close()
+		return nil, errors.New("websocket: client sent data before handshake is complete")
+	}
+
+	c := newConnBRW(netConn, true, u.ReadBufferSize, u.WriteBufferSize, brw)
+	c.subprotocol = subprotocol
+
+	if compress {
+		c.newCompressionWriter = compressNoContextTakeover
+		c.newDecompressionReader = decompressNoContextTakeover
+	}
+
+	p := c.writeBuf[:0]
+	p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
+	p = append(p, computeAcceptKey(challengeKey)...)
+	p = append(p, "\r\n"...)
+	if c.subprotocol != "" {
+		p = append(p, "Sec-Websocket-Protocol: "...)
+		p = append(p, c.subprotocol...)
+		p = append(p, "\r\n"...)
+	}
+	if compress {
+		p = append(p, "Sec-Websocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
+	}
+	for k, vs := range responseHeader {
+		if k == "Sec-Websocket-Protocol" {
+			continue
+		}
+		for _, v := range vs {
+			p = append(p, k...)
+			p = append(p, ": "...)
+			for i := 0; i < len(v); i++ {
+				b := v[i]
+				if b <= 31 {
+					// prevent response splitting.
+					b = ' '
+				}
+				p = append(p, b)
+			}
+			p = append(p, "\r\n"...)
+		}
+	}
+	p = append(p, "\r\n"...)
+
+	// Clear deadlines set by HTTP server.
+	netConn.SetDeadline(time.Time{})
+
+	if u.HandshakeTimeout > 0 {
+		netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
+	}
+	if _, err = netConn.Write(p); err != nil {
+		netConn.Close()
+		return nil, err
+	}
+	if u.HandshakeTimeout > 0 {
+		netConn.SetWriteDeadline(time.Time{})
+	}
+
+	return c, nil
+}
+
+// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
+//
+// This function is deprecated, use websocket.Upgrader instead.
+//
+// The application is responsible for checking the request origin before
+// calling Upgrade. An example implementation of the same origin policy is:
+//
+//	if req.Header.Get("Origin") != "http://"+req.Host {
+//		http.Error(w, "Origin not allowed", 403)
+//		return
+//	}
+//
+// If the endpoint supports subprotocols, then the application is responsible
+// for negotiating the protocol used on the connection. Use the Subprotocols()
+// function to get the subprotocols requested by the client. Use the
+// Sec-Websocket-Protocol response header to specify the subprotocol selected
+// by the application.
+//
+// The responseHeader is included in the response to the client's upgrade
+// request. Use the responseHeader to specify cookies (Set-Cookie) and the
+// negotiated subprotocol (Sec-Websocket-Protocol).
+//
+// The connection buffers IO to the underlying network connection. The
+// readBufSize and writeBufSize parameters specify the size of the buffers to
+// use. Messages can be larger than the buffers.
+//
+// If the request is not a valid WebSocket handshake, then Upgrade returns an
+// error of type HandshakeError. Applications should handle this error by
+// replying to the client with an HTTP error response.
+func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
+	u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
+	u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
+		// don't return errors to maintain backwards compatibility
+	}
+	u.CheckOrigin = func(r *http.Request) bool {
+		// allow all connections by default
+		return true
+	}
+	return u.Upgrade(w, r, responseHeader)
+}
+
+// Subprotocols returns the subprotocols requested by the client in the
+// Sec-Websocket-Protocol header.
+func Subprotocols(r *http.Request) []string {
+	h := strings.TrimSpace(r.Header.Get("Sec-Websocket-Protocol"))
+	if h == "" {
+		return nil
+	}
+	protocols := strings.Split(h, ",")
+	for i := range protocols {
+		protocols[i] = strings.TrimSpace(protocols[i])
+	}
+	return protocols
+}
+
+// IsWebSocketUpgrade returns true if the client requested upgrade to the
+// WebSocket protocol.
+func IsWebSocketUpgrade(r *http.Request) bool {
+	return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
+		tokenListContainsValue(r.Header, "Upgrade", "websocket")
+}

vendor/github.com/gorilla/websocket/util.go

@@ -0,0 +1,214 @@
+// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"crypto/rand"
+	"crypto/sha1"
+	"encoding/base64"
+	"io"
+	"net/http"
+	"strings"
+)
+
+var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
+
+func computeAcceptKey(challengeKey string) string {
+	h := sha1.New()
+	h.Write([]byte(challengeKey))
+	h.Write(keyGUID)
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
+func generateChallengeKey() (string, error) {
+	p := make([]byte, 16)
+	if _, err := io.ReadFull(rand.Reader, p); err != nil {
+		return "", err
+	}
+	return base64.StdEncoding.EncodeToString(p), nil
+}
+
+// Octet types from RFC 2616.
+var octetTypes [256]byte
+
+const (
+	isTokenOctet = 1 << iota
+	isSpaceOctet
+)
+
+func init() {
+	// From RFC 2616
+	//
+	// OCTET      = <any 8-bit sequence of data>
+	// CHAR       = <any US-ASCII character (octets 0 - 127)>
+	// CTL        = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
+	// CR         = <US-ASCII CR, carriage return (13)>
+	// LF         = <US-ASCII LF, linefeed (10)>
+	// SP         = <US-ASCII SP, space (32)>
+	// HT         = <US-ASCII HT, horizontal-tab (9)>
+	// <">        = <US-ASCII double-quote mark (34)>
+	// CRLF       = CR LF
+	// LWS        = [CRLF] 1*( SP | HT )
+	// TEXT       = <any OCTET except CTLs, but including LWS>
+	// separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <">
+	//              | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
+	// token      = 1*<any CHAR except CTLs or separators>
+	// qdtext     = <any TEXT except <">>
+
+	for c := 0; c < 256; c++ {
+		var t byte
+		isCtl := c <= 31 || c == 127
+		isChar := 0 <= c && c <= 127
+		isSeparator := strings.IndexRune(" \t\"(),/:;<=>?@[]\\{}", rune(c)) >= 0
+		if strings.IndexRune(" \t\r\n", rune(c)) >= 0 {
+			t |= isSpaceOctet
+		}
+		if isChar && !isCtl && !isSeparator {
+			t |= isTokenOctet
+		}
+		octetTypes[c] = t
+	}
+}
+
+func skipSpace(s string) (rest string) {
+	i := 0
+	for ; i < len(s); i++ {
+		if octetTypes[s[i]]&isSpaceOctet == 0 {
+			break
+		}
+	}
+	return s[i:]
+}
+
+func nextToken(s string) (token, rest string) {
+	i := 0
+	for ; i < len(s); i++ {
+		if octetTypes[s[i]]&isTokenOctet == 0 {
+			break
+		}
+	}
+	return s[:i], s[i:]
+}
+
+func nextTokenOrQuoted(s string) (value string, rest string) {
+	if !strings.HasPrefix(s, "\"") {
+		return nextToken(s)
+	}
+	s = s[1:]
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		case '"':
+			return s[:i], s[i+1:]
+		case '\\':
+			p := make([]byte, len(s)-1)
+			j := copy(p, s[:i])
+			escape := true
+			for i = i + 1; i < len(s); i++ {
+				b := s[i]
+				switch {
+				case escape:
+					escape = false
+					p[j] = b
+					j += 1
+				case b == '\\':
+					escape = true
+				case b == '"':
+					return string(p[:j]), s[i+1:]
+				default:
+					p[j] = b
+					j += 1
+				}
+			}
+			return "", ""
+		}
+	}
+	return "", ""
+}
+
+// tokenListContainsValue returns true if the 1#token header with the given
+// name contains token.
+func tokenListContainsValue(header http.Header, name string, value string) bool {
+headers:
+	for _, s := range header[name] {
+		for {
+			var t string
+			t, s = nextToken(skipSpace(s))
+			if t == "" {
+				continue headers
+			}
+			s = skipSpace(s)
+			if s != "" && s[0] != ',' {
+				continue headers
+			}
+			if strings.EqualFold(t, value) {
+				return true
+			}
+			if s == "" {
+				continue headers
+			}
+			s = s[1:]
+		}
+	}
+	return false
+}
+
+// parseExtensiosn parses WebSocket extensions from a header.
+func parseExtensions(header http.Header) []map[string]string {
+
+	// From RFC 6455:
+	//
+	//  Sec-WebSocket-Extensions = extension-list
+	//  extension-list = 1#extension
+	//  extension = extension-token *( ";" extension-param )
+	//  extension-token = registered-token
+	//  registered-token = token
+	//  extension-param = token [ "=" (token | quoted-string) ]
+	//     ;When using the quoted-string syntax variant, the value
+	//     ;after quoted-string unescaping MUST conform to the
+	//     ;'token' ABNF.
+
+	var result []map[string]string
+headers:
+	for _, s := range header["Sec-Websocket-Extensions"] {
+		for {
+			var t string
+			t, s = nextToken(skipSpace(s))
+			if t == "" {
+				continue headers
+			}
+			ext := map[string]string{"": t}
+			for {
+				s = skipSpace(s)
+				if !strings.HasPrefix(s, ";") {
+					break
+				}
+				var k string
+				k, s = nextToken(skipSpace(s[1:]))
+				if k == "" {
+					continue headers
+				}
+				s = skipSpace(s)
+				var v string
+				if strings.HasPrefix(s, "=") {
+					v, s = nextTokenOrQuoted(skipSpace(s[1:]))
+					s = skipSpace(s)
+				}
+				if s != "" && s[0] != ',' && s[0] != ';' {
+					continue headers
+				}
+				ext[k] = v
+			}
+			if s != "" && s[0] != ',' {
+				continue headers
+			}
+			result = append(result, ext)
+			if s == "" {
+				continue headers
+			}
+			s = s[1:]
+		}
+	}
+	return result
+}

vendor/github.com/moul/anonuuid/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Manfred Touron
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

vendor/github.com/moul/anonuuid/Makefile

@@ -0,0 +1,73 @@
+# Project-specific variables
+BINARIES ?=	anonuuid
+CONVEY_PORT ?=	9042
+
+
+# Common variables
+SOURCES :=	$(shell find . -name "*.go")
+COMMANDS :=	$(shell go list ./... | grep -v /vendor/ | grep /cmd/)
+PACKAGES :=	$(shell go list ./... | grep -v /vendor/ | grep -v /cmd/)
+GOENV ?=	GO15VENDOREXPERIMENT=1
+GO ?=		$(GOENV) go
+GODEP ?=	$(GOENV) godep
+USER ?=		$(shell whoami)
+
+
+all:	build
+
+
+.PHONY: build
+build:	$(BINARIES)
+
+
+$(BINARIES):	$(SOURCES)
+	$(GO) build -o $@ ./cmd/$@
+
+
+.PHONY: test
+test:
+	$(GO) get -t .
+	$(GO) test -v .
+
+
+.PHONY: godep-save
+godep-save:
+	$(GODEP) save $(PACKAGES) $(COMMANDS)
+
+
+.PHONY: clean
+clean:
+	rm -f $(BINARIES)
+
+
+.PHONY: re
+re:	clean all
+
+
+.PHONY: convey
+convey:
+	$(GO) get github.com/smartystreets/goconvey
+	goconvey -cover -port=$(CONVEY_PORT) -workDir="$(realpath .)" -depth=1
+
+
+.PHONY:	cover
+cover:	profile.out
+
+
+profile.out:	$(SOURCES)
+	rm -f $@
+	$(GO) test -covermode=count -coverpkg=. -coverprofile=$@ .
+
+
+.PHONY: docker-build
+docker-build:
+	go get github.com/laher/goxc
+	rm -rf contrib/docker/linux_386
+	for binary in $(BINARIES); do                                             \
+	  goxc -bc="linux,386" -d . -pv contrib/docker -n $$binary xc;            \
+	  mv contrib/docker/linux_386/$$binary contrib/docker/entrypoint;         \
+	  docker build -t $(USER)/$$binary contrib/docker;                        \
+	  docker run -it --rm $(USER)/$$binary || true;                           \
+	  docker inspect --type=image --format="{{ .Id }}" moul/$$binary || true; \
+	  echo "Now you can run 'docker push $(USER)/$$binary'";                  \
+	done

vendor/github.com/moul/anonuuid/README.md

@@ -0,0 +1,170 @@
+# AnonUUID
+
+[![Build Status](https://travis-ci.org/moul/anonuuid.svg)](https://travis-ci.org/moul/anonuuid)
+[![GoDoc](https://godoc.org/github.com/moul/anonuuid?status.svg)](https://godoc.org/github.com/moul/anonuuid)
+[![Coverage Status](https://coveralls.io/repos/moul/anonuuid/badge.svg?branch=master&service=github)](https://coveralls.io/github/moul/anonuuid?branch=master)
+
+:wrench: Anonymize UUIDs outputs (written in Golang)
+
+![AnonUUID Logo](https://raw.githubusercontent.com/moul/anonuuid/master/assets/anonuuid.png)
+
+**anonuuid** anonymize an input string by replacing all UUIDs by an anonymized
+new one.
+
+The fake UUIDs are cached, so if AnonUUID encounter the same real UUIDs multiple
+times, the translation will be the same.
+
+## Usage
+
+```console
+$ anonuuid --help
+NAME:
+   anonuuid - Anonymize UUIDs outputs
+
+USAGE:
+   anonuuid [global options] command [command options] [arguments...]
+
+VERSION:
+   1.0.0-dev
+
+AUTHOR(S):
+   Manfred Touron <https://github.com/moul>
+
+COMMANDS:
+   help, h	Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --hexspeak		Generate hexspeak style fake UUIDs
+   --random, -r		Generate random fake UUIDs
+   --keep-beginning	Keep first part of the UUID unchanged
+   --keep-end		Keep last part of the UUID unchanged
+   --prefix, -p 	Prefix generated UUIDs
+   --suffix 		Suffix generated UUIDs
+   --help, -h		show help
+   --version, -v	print the version
+   ```
+
+## Example
+
+Replace all UUIDs and cache the correspondance.
+
+```command
+$ anonuuid git:(master) ✗ cat <<EOF | anonuuid
+VOLUMES_0_SERVER_ID=15573749-c89d-41dd-a655-16e79bed52e0
+VOLUMES_0_SERVER_NAME=hello
+VOLUMES_0_ID=c245c3cb-3336-4567-ada1-70cb1fe4eefe
+VOLUMES_0_SIZE=50000000000
+ORGANIZATION=fe1e54e8-d69d-4f7c-a9f1-42069e03da31
+TEST=15573749-c89d-41dd-a655-16e79bed52e0
+EOF
+VOLUMES_0_SERVER_ID=00000000-0000-0000-0000-000000000000
+VOLUMES_0_SERVER_NAME=hello
+VOLUMES_0_ID=11111111-1111-1111-1111-111111111111
+VOLUMES_0_SIZE=50000000000
+ORGANIZATION=22222222-2222-2222-2222-222222222222
+TEST=00000000-0000-0000-0000-000000000000
+```
+
+---
+
+Inline
+
+```command
+$ echo 'VOLUMES_0_SERVER_ID=15573749-c89d-41dd-a655-16e79bed52e0 VOLUMES_0_SERVER_NAME=bitrig1 VOLUMES_0_ID=c245c3cb-3336-4567-ada1-70cb1fe4eefe VOLUMES_0_SIZE=50000000000 ORGANIZATION=fe1e54e8-d69d-4f7c-a9f1-42069e03da31 TEST=15573749-c89d-41dd-a655-16e79bed52e0' | ./anonuuid
+VOLUMES_0_SERVER_ID=00000000-0000-0000-0000-000000000000 VOLUMES_0_SERVER_NAME=bitrig1 VOLUMES_0_ID=11111111-1111-1111-1111-111111111111 VOLUMES_0_SIZE=50000000000 ORGANIZATION=22222222-2222-2222-2222-222222222222 TEST=00000000-0000-0000-0000-000000000000
+```
+
+---
+
+```command
+$ curl -s https://api.pathwar.net/achievements\?max_results\=2 | anonuuid | jq .
+{
+  "_items": [
+    {
+      "_updated": "Thu, 30 Apr 2015 13:00:58 GMT",
+      "description": "You",
+      "_links": {
+        "self": {
+          "href": "achievements/00000000-0000-0000-0000-000000000000",
+          "title": "achievement"
+        }
+      },
+      "_created": "Thu, 30 Apr 2015 13:00:58 GMT",
+      "_id": "00000000-0000-0000-0000-000000000000",
+      "_etag": "b1e9f850accfcb952c58384db41d89728890a69f",
+      "name": "finish-20-levels"
+    },
+    {
+      "_updated": "Thu, 30 Apr 2015 13:01:07 GMT",
+      "description": "You",
+      "_links": {
+        "self": {
+          "href": "achievements/11111111-1111-1111-1111-111111111111",
+          "title": "achievement"
+        }
+      },
+      "_created": "Thu, 30 Apr 2015 13:01:07 GMT",
+      "_id": "11111111-1111-1111-1111-111111111111",
+      "_etag": "c346f5e1c4f7658f2dfc4124efa87aba909a9821",
+      "name": "buy-30-levels"
+    }
+  ],
+  "_links": {
+    "self": {
+      "href": "achievements?max_results=2",
+      "title": "achievements"
+    },
+    "last": {
+      "href": "achievements?max_results=2&page=23",
+      "title": "last page"
+    },
+    "parent": {
+      "href": "/",
+      "title": "home"
+    },
+    "next": {
+      "href": "achievements?max_results=2&page=2",
+      "title": "next page"
+    }
+  },
+  "_meta": {
+    "max_results": 2,
+    "total": 46,
+    "page": 1
+  }
+}
+```
+
+## Install
+
+Using go
+
+- `go get github.com/moul/anonuuid/...`
+
+## Changelog
+
+### master (unreleased)
+
+* Add mutex to protect the cache field ([@QuentinPerez](https://github.com/QuentinPerez))
+* Switch from `Party` to `Godep`
+* Support of `--suffix=xxx`, `--keep-beginning` and `--keep-end` options ([#4](https://github.com/moul/anonuuid/issues/4))
+* Using **party** to stabilize vendor package versions ([#8](https://github.com/moul/anonuuid/issues/8))
+* Add homebrew package ([#6](https://github.com/moul/anonuuid/issues/6))
+
+[full commits list](https://github.com/moul/anonuuid/compare/v1.0.0...master)
+
+### [v1.0.0](https://github.com/moul/anonuuid/releases/tag/v1.0.0) (2015-10-07)
+
+**Initial release**
+
+#### Features
+
+* Support of `--hexspeak` option
+* Support of `--random` option
+* Support of `--prefix` option
+* Anonymize input stream
+* Anonymize files
+
+## License
+
+MIT

vendor/github.com/moul/anonuuid/anonuuid.go

@@ -0,0 +1,229 @@
+package anonuuid
+
+import (
+	"fmt"
+	"log"
+	"math/rand"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+)
+
+var (
+	// UUIDRegex is the regex used to find UUIDs in texts
+	UUIDRegex = "[a-z0-9]{8}-[a-z0-9]{4}-[1-5][a-z0-9]{3}-[a-z0-9]{4}-[a-z0-9]{12}"
+)
+
+// AnonUUID is the main structure, it contains the cache map and helpers
+type AnonUUID struct {
+	cache map[string]string
+
+	guard sync.Mutex // cache guard
+
+	// Hexspeak flag will generate hexspeak style fake UUIDs
+	Hexspeak bool
+
+	// Random flag will generate random fake UUIDs
+	Random bool
+
+	// Prefix will be the beginning of all the generated UUIDs
+	Prefix string
+
+	// Suffix will be the end of all the generated UUIDs
+	Suffix string
+
+	// AllowNonUUIDInput tells FakeUUID to accept non UUID input string
+	AllowNonUUIDInput bool
+
+	// KeepBeginning tells FakeUUID to let the beginning of the UUID as it is
+	KeepBeginning bool
+
+	// KeepEnd tells FakeUUID to let the last part of the UUID as it is
+	KeepEnd bool
+}
+
+// Sanitize takes a string as input and return sanitized string
+func (a *AnonUUID) Sanitize(input string) string {
+	r := regexp.MustCompile(UUIDRegex)
+
+	return r.ReplaceAllStringFunc(input, func(m string) string {
+		parts := r.FindStringSubmatch(m)
+		return a.FakeUUID(parts[0])
+	})
+}
+
+// FakeUUID takes a word (real UUID or standard string) and returns its corresponding (mapped) fakeUUID
+func (a *AnonUUID) FakeUUID(input string) string {
+	if !a.AllowNonUUIDInput {
+		err := IsUUID(input)
+		if err != nil {
+			return "invaliduuid"
+		}
+	}
+	a.guard.Lock()
+	defer a.guard.Unlock()
+	if _, ok := a.cache[input]; !ok {
+
+		if a.KeepBeginning {
+			a.Prefix = input[:8]
+		}
+
+		if a.KeepEnd {
+			a.Suffix = input[36-12:]
+		}
+
+		if a.Prefix != "" {
+			matched, err := regexp.MatchString("^[a-z0-9]+$", a.Prefix)
+			if err != nil || !matched {
+				a.Prefix = "invalidprefix"
+			}
+		}
+
+		if a.Suffix != "" {
+			matched, err := regexp.MatchString("^[a-z0-9]+$", a.Suffix)
+			if err != nil || !matched {
+				a.Suffix = "invalsuffix"
+			}
+		}
+
+		var fakeUUID string
+		var err error
+		if a.Hexspeak {
+			fakeUUID, err = GenerateHexspeakUUID(len(a.cache))
+		} else if a.Random {
+			fakeUUID, err = GenerateRandomUUID(10)
+		} else {
+			fakeUUID, err = GenerateLenUUID(len(a.cache))
+		}
+		if err != nil {
+			log.Fatalf("Failed to generate an UUID: %v", err)
+		}
+
+		if a.Prefix != "" {
+			fakeUUID, err = PrefixUUID(a.Prefix, fakeUUID)
+			if err != nil {
+				panic(err)
+			}
+		}
+
+		if a.Suffix != "" {
+			fakeUUID, err = SuffixUUID(a.Suffix, fakeUUID)
+			if err != nil {
+				panic(err)
+			}
+		}
+
+		// FIXME: check for duplicates and retry
+
+		a.cache[input] = fakeUUID
+	}
+	return a.cache[input]
+}
+
+// New returns a prepared AnonUUID structure
+func New() *AnonUUID {
+	return &AnonUUID{
+		cache:    make(map[string]string),
+		Hexspeak: false,
+		Random:   false,
+	}
+}
+
+func init() {
+	rand.Seed(time.Now().UTC().UnixNano())
+}
+
+// PrefixUUID returns a prefixed UUID
+func PrefixUUID(prefix string, uuid string) (string, error) {
+	uuidLetters := uuid[:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36]
+	prefixedUUID, err := FormatUUID(prefix + uuidLetters)
+	if err != nil {
+		return "", err
+	}
+	return prefixedUUID, nil
+}
+
+// SuffixUUID returns a suffixed UUID
+func SuffixUUID(suffix string, uuid string) (string, error) {
+	uuidLetters := uuid[:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36]
+	uuidLetters = uuidLetters[:32-len(suffix)] + suffix
+	suffixedUUID, err := FormatUUID(uuidLetters)
+	if err != nil {
+		return "", err
+	}
+	return suffixedUUID, nil
+}
+
+// IsUUID returns nil if the input is an UUID, else it returns an error
+func IsUUID(input string) error {
+	matched, err := regexp.MatchString("^"+UUIDRegex+"$", input)
+	if err != nil {
+		return err
+	}
+	if !matched {
+		return fmt.Errorf("String '%s' is not a valid UUID", input)
+	}
+	return nil
+}
+
+// FormatUUID takes a string in input and return an UUID formatted string by repeating the string and placing dashes if necessary
+func FormatUUID(part string) (string, error) {
+	if len(part) < 1 {
+		return "", fmt.Errorf("Empty UUID")
+	}
+	if len(part) < 32 {
+		part = strings.Repeat(part, 32)
+	}
+	if len(part) > 32 {
+		part = part[:32]
+	}
+	uuid := part[:8] + "-" + part[8:12] + "-1" + part[13:16] + "-" + part[16:20] + "-" + part[20:32]
+
+	err := IsUUID(uuid)
+	if err != nil {
+		return "", err
+	}
+
+	return uuid, nil
+}
+
+// GenerateRandomUUID returns an UUID based on random strings
+func GenerateRandomUUID(length int) (string, error) {
+	var letters = []rune("abcdef0123456789")
+
+	b := make([]rune, length)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return FormatUUID(string(b))
+}
+
+// GenerateHexspeakUUID returns an UUID formatted string containing hexspeak words
+func GenerateHexspeakUUID(i int) (string, error) {
+	if i < 0 {
+		i = -i
+	}
+	hexspeaks := []string{
+		"0ff1ce",
+		"31337",
+		"4b1d",
+		"badc0de",
+		"badcafe",
+		"badf00d",
+		"deadbabe",
+		"deadbeef",
+		"deadc0de",
+		"deadfeed",
+		"fee1bad",
+	}
+	return FormatUUID(hexspeaks[i%len(hexspeaks)])
+}
+
+// GenerateLenUUID returns an UUID formatted string based on an index number
+func GenerateLenUUID(i int) (string, error) {
+	if i < 0 {
+		i = 2<<29 + i
+	}
+	return FormatUUID(fmt.Sprintf("%x", i))
+}

vendor/github.com/moul/gotty-client/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Manfred Touron
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

vendor/github.com/moul/gotty-client/Makefile

@@ -0,0 +1,81 @@
+# Project-specific variables
+BINARIES ?=	gotty-client
+GOTTY_URL := http://localhost:8081/
+VERSION :=	$(shell cat .goxc.json | jq -c .PackageVersion | sed 's/"//g')
+
+CONVEY_PORT ?=	9042
+
+
+# Common variables
+SOURCES :=	$(shell find . -type f -name "*.go")
+COMMANDS :=	$(shell go list ./... | grep -v /vendor/ | grep /cmd/)
+PACKAGES :=	$(shell go list ./... | grep -v /vendor/ | grep -v /cmd/)
+GOENV ?=	GO15VENDOREXPERIMENT=1
+GO ?=		$(GOENV) go
+GODEP ?=	$(GOENV) godep
+USER ?=		$(shell whoami)
+
+
+all:	build
+
+
+.PHONY: build
+build:	$(BINARIES)
+
+
+.PHONY: install
+install:
+	$(GO) install ./cmd/gotty-client
+
+
+$(BINARIES):	$(SOURCES)
+	$(GO) build -o $@ ./cmd/$@
+
+
+.PHONY: test
+test:
+	$(GO) get -t .
+	$(GO) test -v .
+
+
+.PHONY: godep-save
+godep-save:
+	$(GODEP) save $(PACKAGES) $(COMMANDS)
+
+
+.PHONY: clean
+clean:
+	rm -f $(BINARIES)
+
+
+.PHONY: re
+re:	clean all
+
+
+.PHONY: convey
+convey:
+	$(GO) get github.com/smartystreets/goconvey
+	goconvey -cover -port=$(CONVEY_PORT) -workDir="$(realpath .)" -depth=1
+
+
+.PHONY:	cover
+cover:	profile.out
+
+
+profile.out:	$(SOURCES)
+	rm -f $@
+	$(GO) test -covermode=count -coverpkg=. -coverprofile=$@ .
+
+
+.PHONY: docker-build
+docker-build:
+	go get github.com/laher/goxc
+	rm -rf contrib/docker/linux_386
+	for binary in $(BINARIES); do                                             \
+	  goxc -bc="linux,386" -d . -pv contrib/docker -n $$binary xc;            \
+	  mv contrib/docker/linux_386/$$binary contrib/docker/entrypoint;         \
+	  docker build -t $(USER)/$$binary contrib/docker;                        \
+	  docker run -it --rm $(USER)/$$binary || true;                           \
+	  docker inspect --type=image --format="{{ .Id }}" moul/$$binary || true; \
+	  echo "Now you can run 'docker push $(USER)/$$binary'";                  \
+	done

vendor/github.com/moul/gotty-client/README.md

@@ -0,0 +1,201 @@
+# gotty-client
+:wrench: Terminal client for [GoTTY](https://github.com/yudai/gotty).
+
+![](https://raw.githubusercontent.com/moul/gotty-client/master/resources/gotty-client.png)
+
+[![Build Status](https://travis-ci.org/moul/gotty-client.svg?branch=master)](https://travis-ci.org/moul/gotty-client)
+[![GoDoc](https://godoc.org/github.com/moul/gotty-client?status.svg)](https://godoc.org/github.com/moul/gotty-client)
+
+```ruby
+                                                             ┌─────────────────┐
+                                                     ┌──────▶│    /bin/bash    │
+                                                     │       └─────────────────┘
+                ┌──────────────┐               ┌──────────┐
+                │              │               │  Gotty   │
+┌───────┐   ┌──▶│   Browser    │───────┐       │          │
+│       │   │   │              │       │       │          │
+│       │   │   └──────────────┘       │       │          │  ┌─────────────────┐
+│  Bob  │───┤                      websockets─▶│          │─▶│ emacs /var/www  │
+│       │   │   ╔═ ══ ══ ══ ══ ╗       │       │          │  └─────────────────┘
+│       │   │   ║              ║       │       │          │
+└───────┘   └──▶║ gotty-client  ───────┘       │          │
+                               ║               │          │
+                ╚═ ══ ══ ══ ══ ╝               └──────────┘
+                                                     │       ┌─────────────────┐
+                                                     └──────▶│   tmux attach   │
+                                                             └─────────────────┘
+```
+
+## Example
+
+Server side ([GoTTY](https://github.com/yudai/gotty))
+
+```console
+$ gotty -p 9191 sh -c 'while true; do date; sleep 1; done'
+2015/08/24 18:54:31 Server is starting with command: sh -c while true; do date; sleep 1; done
+2015/08/24 18:54:31 URL: http://[::1]:9191/
+2015/08/24 18:54:34 GET /ws
+2015/08/24 18:54:34 New client connected: 127.0.0.1:61811
+2015/08/24 18:54:34 Command is running for client 127.0.0.1:61811 with PID 64834
+2015/08/24 18:54:39 Command exited for: 127.0.0.1:61811
+2015/08/24 18:54:39 Connection closed: 127.0.0.1:61811
+...
+```
+
+**Client side**
+
+```console
+$ gotty-client http://localhost:9191/
+INFO[0000] New title: GoTTY - sh -c while true; do date; sleep 1; done (jean-michel-van-damme.local)
+WARN[0000] Unhandled protocol message: json pref: 2{}
+Mon Aug 24 18:54:34 CEST 2015
+Mon Aug 24 18:54:35 CEST 2015
+Mon Aug 24 18:54:36 CEST 2015
+Mon Aug 24 18:54:37 CEST 2015
+Mon Aug 24 18:54:38 CEST 2015
+^C
+```
+
+## Usage
+
+```console
+$ gotty-client -h
+NAME:
+   gotty-client - GoTTY client for your terminal
+
+USAGE:
+   gotty-client [global options] command [command options] GOTTY_URL
+
+VERSION:
+   1.3.0+
+
+AUTHOR(S):
+   Manfred Touron <https://github.com/moul/gotty-client>
+
+COMMANDS:
+   help, h	Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --debug, -D		Enable debug mode [$GOTTY_CLIENT_DEBUG]
+   --help, -h		show help
+   --version, -v	print the version
+```
+
+## Install
+
+Install latest version using Golang (recommended)
+
+```console
+$ go get github.com/moul/gotty-client/cmd/gotty-client
+```
+
+---
+
+Install latest version using Homebrew (Mac OS X)
+
+```console
+$ brew install https://raw.githubusercontent.com/moul/gotty-client/master/contrib/homebrew/gotty-client.rb --HEAD
+```
+
+or the latest released version
+
+```console
+$ brew install https://raw.githubusercontent.com/moul/gotty-client/master/contrib/homebrew/gotty-client.rb
+```
+
+## Changelog
+
+### master (unreleased)
+
+* No entry
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.6.1...master)
+
+### [v1.6.1](https://github.com/moul/gotty-client/releases/tag/v1.6.1) (2017-01-19)
+
+* Do not exit on EOF ([#45](https://github.com/moul/gotty-client/pull/45)) ([@gurjeet](https://github.com/gurjeet))
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.6.0...v1.6.1)
+
+### [v1.6.0](https://github.com/moul/gotty-client/releases/tag/v1.6.0) (2016-05-23)
+
+* Support of `--use-proxy-from-env` (Add Proxy support) ([#36](https://github.com/moul/gotty-client/pull/36)) ([@byung2](https://github.com/byung2))
+* Add debug mode ([#18](https://github.com/moul/gotty-client/issues/18))
+* Fix argument passing ([#16](https://github.com/moul/gotty-client/issues/16))
+* Remove warnings + golang fixes and refactoring ([@QuentinPerez](https://github.com/QuentinPerez))
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.5.0...v1.6.0)
+
+### [v1.5.0](https://github.com/moul/gotty-client/releases/tag/v1.5.0) (2016-02-18)
+
+* Add autocomplete support ([#19](https://github.com/moul/gotty-client/issues/19))
+* Switch from `Party` to `Godep`
+* Fix terminal data being interpreted as format string ([#34](https://github.com/moul/gotty-client/pull/34)) ([@mickael9](https://github.com/mickael9))
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.4.0...v1.5.0)
+
+### [v1.4.0](https://github.com/moul/gotty-client/releases/tag/v1.4.0) (2015-12-09)
+
+* Remove solaris,plan9,nacl for `.goxc.json`
+* Add an error if the go version is lower than 1.5
+* Flexible parsing of the input URL
+* Add tests
+* Support of `--skip-tls-verify`
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.3.0...v1.4.0)
+
+### [v1.3.0](https://github.com/moul/gotty-client/releases/tag/v1.3.0) (2015-10-27)
+
+* Fix `connected` state when using `Connect()` + `Loop()` methods
+* Add `ExitLoop` which allow to exit from `Loop` function
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.2.0...v1.3.0)
+
+### [v1.2.0](https://github.com/moul/gotty-client/releases/tag/v1.2.0) (2015-10-23)
+
+* Removed an annoying warning when exiting connection ([#22](https://github.com/moul/gotty-client/issues/22)) ([@QuentinPerez](https://github.com/QuentinPerez))
+* Add the ability to configure alternative stdout ([#21](https://github.com/moul/gotty-client/issues/21)) ([@QuentinPerez](https://github.com/QuentinPerez))
+* Refactored the goroutine system with select, improve speed and stability ([@QuentinPerez](https://github.com/QuentinPerez))
+* Add debug mode (`--debug`/`-D`) ([#18](https://github.com/moul/gotty-client/issues/18))
+* Improve error message when connecting by checking HTTP status code
+* Fix arguments passing ([#16](https://github.com/moul/gotty-client/issues/16))
+* Dropped support for golang<1.5
+* Small fixes
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.1.0...v1.2.0)
+
+### [v1.1.0](https://github.com/moul/gotty-client/releases/tag/v1.1.0) (2015-10-10)
+
+* Handling arguments + using mutexes (thanks to [@QuentinPerez](https://github.com/QuentinPerez))
+* Add logo ([#9](https://github.com/moul/gotty-client/issues/9))
+* Using codegansta/cli for CLI parsing ([#3](https://github.com/moul/gotty-client/issues/3))
+* Fix panic when running on older GoTTY server ([#13](https://github.com/moul/gotty-client/issues/13))
+* Add 'homebrew support' ([#1](https://github.com/moul/gotty-client/issues/1))
+* Add Changelog ([#5](https://github.com/moul/gotty-client/issues/5))
+* Add GOXC configuration to build binaries for multiple architectures ([#2](https://github.com/moul/gotty-client/issues/2))
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.0.1...v1.1.0)
+
+### [v1.0.1](https://github.com/moul/gotty-client/releases/tag/v1.0.1) (2015-09-27)
+
+* Using party to manage dependencies
+
+[full commits list](https://github.com/moul/gotty-client/compare/v1.0.0...v1.0.1)
+
+### [v1.0.0](https://github.com/moul/gotty-client/releases/tag/v1.0.0) (2015-09-27)
+
+Compatible with [GoTTY](https://github.com/yudai/gotty) version: [v0.0.10](https://github.com/yudai/gotty/releases/tag/v0.0.10)
+
+#### Features
+
+* Support **basic-auth**
+* Support **terminal-(re)size**
+* Support **write**
+* Support **title**
+* Support **custom URI**
+
+[full commits list](https://github.com/moul/gotty-client/compare/cf0c1146c7ce20fe0bd65764c13253bc575cd43a...v1.0.0)
+
+## License
+
+MIT

vendor/github.com/moul/gotty-client/arch.go

@@ -0,0 +1,34 @@
+// +build !windows
+
+package gottyclient
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"unsafe"
+)
+
+func notifySignalSIGWINCH(c chan<- os.Signal) {
+	signal.Notify(c, syscall.SIGWINCH)
+}
+
+func resetSignalSIGWINCH() {
+	signal.Reset(syscall.SIGWINCH)
+}
+
+func syscallTIOCGWINSZ() ([]byte, error) {
+	ws := winsize{}
+
+	syscall.Syscall(syscall.SYS_IOCTL,
+		uintptr(0), uintptr(syscall.TIOCGWINSZ),
+		uintptr(unsafe.Pointer(&ws)))
+
+	b, err := json.Marshal(ws)
+	if err != nil {
+		return nil, fmt.Errorf("json.Marshal error: %v", err)
+	}
+	return b, err
+}

vendor/github.com/moul/gotty-client/arch_windows.go

@@ -0,0 +1,16 @@
+package gottyclient
+
+import (
+	"errors"
+	"os"
+)
+
+func notifySignalSIGWINCH(c chan<- os.Signal) {
+}
+
+func resetSignalSIGWINCH() {
+}
+
+func syscallTIOCGWINSZ() ([]byte, error) {
+	return nil, errors.New("SIGWINCH isn't supported on this ARCH")
+}

vendor/github.com/moul/gotty-client/glide.lock

@@ -0,0 +1,37 @@
+hash: 5ba4ef945563e8e85097f2699126b1577f9c667fdbbcdd71604e553ab7dd2a03
+updated: 2017-02-04T23:03:32.03375088+01:00
+imports:
+- name: github.com/codegangsta/cli
+  version: 2ae9042f5bcbaf15b01229f8395ba8e72e01bded
+- name: github.com/creack/goselect
+  version: 40085cf5fd629ccd88dc328895f1f137d09a1de4
+- name: github.com/gopherjs/gopherjs
+  version: db27c7c470d7404b6b201f82d6fd4821260bd13e
+  subpackages:
+  - js
+- name: github.com/gorilla/websocket
+  version: 1f512fc3f05332ba7117626cdfb4e07474e58e60
+- name: github.com/jtolds/gls
+  version: 8ddce2a84170772b95dd5d576c48d517b22cac63
+- name: github.com/Sirupsen/logrus
+  version: cd7d1bbe41066b6c1f19780f895901052150a575
+- name: github.com/smartystreets/assertions
+  version: 40711f7748186bbf9c99977cd89f21ce1a229447
+  subpackages:
+  - internal/go-render/render
+  - internal/oglematchers
+- name: github.com/smartystreets/goconvey
+  version: d4c757aa9afd1e2fc1832aaab209b5794eb336e1
+  subpackages:
+  - convey
+  - convey/gotest
+  - convey/reporting
+- name: golang.org/x/crypto
+  version: 5bcd134fee4dd1475da17714aac19c0aa0142e2f
+  subpackages:
+  - ssh/terminal
+- name: golang.org/x/sys
+  version: d4feaf1a7e61e1d9e79e6c4e76c6349e9cab0a03
+  subpackages:
+  - unix
+testImports: []

vendor/github.com/moul/gotty-client/glide.yaml

@@ -0,0 +1,35 @@
+package: github.com/moul/gotty-client
+import:
+- package: github.com/Sirupsen/logrus
+  version: cd7d1bbe41066b6c1f19780f895901052150a575
+- package: github.com/codegangsta/cli
+  version: 2ae9042f5bcbaf15b01229f8395ba8e72e01bded
+- package: github.com/creack/goselect
+  version: 40085cf5fd629ccd88dc328895f1f137d09a1de4
+- package: github.com/gopherjs/gopherjs
+  version: db27c7c470d7404b6b201f82d6fd4821260bd13e
+  subpackages:
+  - js
+- package: github.com/gorilla/websocket
+  version: 1f512fc3f05332ba7117626cdfb4e07474e58e60
+- package: github.com/jtolds/gls
+  version: 8ddce2a84170772b95dd5d576c48d517b22cac63
+- package: github.com/smartystreets/assertions
+  version: 40711f7748186bbf9c99977cd89f21ce1a229447
+  subpackages:
+  - internal/go-render/render
+  - internal/oglematchers
+- package: github.com/smartystreets/goconvey
+  version: d4c757aa9afd1e2fc1832aaab209b5794eb336e1
+  subpackages:
+  - convey
+  - convey/gotest
+  - convey/reporting
+- package: golang.org/x/crypto
+  version: 5bcd134fee4dd1475da17714aac19c0aa0142e2f
+  subpackages:
+  - ssh/terminal
+- package: golang.org/x/sys
+  version: d4feaf1a7e61e1d9e79e6c4e76c6349e9cab0a03
+  subpackages:
+  - unix

vendor/github.com/moul/gotty-client/gotty-client.go

@@ -0,0 +1,469 @@
+package gottyclient
+
+import (
+	"crypto/tls"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/creack/goselect"
+	"github.com/gorilla/websocket"
+	"golang.org/x/crypto/ssh/terminal"
+)
+
+// GetAuthTokenURL transforms a GoTTY http URL to its AuthToken file URL
+func GetAuthTokenURL(httpURL string) (*url.URL, *http.Header, error) {
+	header := http.Header{}
+	target, err := url.Parse(httpURL)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	target.Path = strings.TrimLeft(target.Path+"auth_token.js", "/")
+
+	if target.User != nil {
+		header.Add("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(target.User.String())))
+		target.User = nil
+	}
+
+	return target, &header, nil
+}
+
+// GetURLQuery returns url.query
+func GetURLQuery(rawurl string) (url.Values, error) {
+	target, err := url.Parse(rawurl)
+	if err != nil {
+		return nil, err
+	}
+	return target.Query(), nil
+}
+
+// GetWebsocketURL transforms a GoTTY http URL to its WebSocket URL
+func GetWebsocketURL(httpURL string) (*url.URL, *http.Header, error) {
+	header := http.Header{}
+	target, err := url.Parse(httpURL)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if target.Scheme == "https" {
+		target.Scheme = "wss"
+	} else {
+		target.Scheme = "ws"
+	}
+
+	target.Path = strings.TrimLeft(target.Path+"ws", "/")
+
+	if target.User != nil {
+		header.Add("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(target.User.String())))
+		target.User = nil
+	}
+
+	return target, &header, nil
+}
+
+type Client struct {
+	Dialer          *websocket.Dialer
+	Conn            *websocket.Conn
+	URL             string
+	WriteMutex      *sync.Mutex
+	Output          io.Writer
+	poison          chan bool
+	SkipTLSVerify   bool
+	UseProxyFromEnv bool
+	Connected       bool
+}
+
+type querySingleType struct {
+	AuthToken string `json:"AuthToken"`
+	Arguments string `json:"Arguments"`
+}
+
+func (c *Client) write(data []byte) error {
+	c.WriteMutex.Lock()
+	defer c.WriteMutex.Unlock()
+	return c.Conn.WriteMessage(websocket.TextMessage, data)
+}
+
+// GetAuthToken retrieves an Auth Token from dynamic auth_token.js file
+func (c *Client) GetAuthToken() (string, error) {
+	target, header, err := GetAuthTokenURL(c.URL)
+	if err != nil {
+		return "", err
+	}
+
+	logrus.Debugf("Fetching auth token auth-token: %q", target.String())
+	req, err := http.NewRequest("GET", target.String(), nil)
+	req.Header = *header
+	tr := &http.Transport{}
+	if c.SkipTLSVerify {
+		conf := &tls.Config{InsecureSkipVerify: true}
+		tr.TLSClientConfig = conf
+	}
+	if c.UseProxyFromEnv {
+		tr.Proxy = http.ProxyFromEnvironment
+	}
+	client := &http.Client{Transport: tr}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+
+	switch resp.StatusCode {
+	case 200:
+		// Everything is OK
+	default:
+		return "", fmt.Errorf("unknown status code: %d (%s)", resp.StatusCode, http.StatusText(resp.StatusCode))
+	}
+
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	re := regexp.MustCompile("var gotty_auth_token = '(.*)'")
+	output := re.FindStringSubmatch(string(body))
+	if len(output) == 0 {
+		return "", fmt.Errorf("Cannot fetch GoTTY auth-token, please upgrade your GoTTY server.")
+	}
+
+	return output[1], nil
+}
+
+// Connect tries to dial a websocket server
+func (c *Client) Connect() error {
+	// Retrieve AuthToken
+	authToken, err := c.GetAuthToken()
+	if err != nil {
+		return err
+	}
+	logrus.Debugf("Auth-token: %q", authToken)
+
+	// Open WebSocket connection
+	target, header, err := GetWebsocketURL(c.URL)
+	if err != nil {
+		return err
+	}
+	logrus.Debugf("Connecting to websocket: %q", target.String())
+	if c.SkipTLSVerify {
+		c.Dialer.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+	}
+	if c.UseProxyFromEnv {
+		c.Dialer.Proxy = http.ProxyFromEnvironment
+	}
+	conn, _, err := c.Dialer.Dial(target.String(), *header)
+	if err != nil {
+		return err
+	}
+	c.Conn = conn
+	c.Connected = true
+
+	// Pass arguments and auth-token
+	query, err := GetURLQuery(c.URL)
+	if err != nil {
+		return err
+	}
+	querySingle := querySingleType{
+		Arguments: "?" + query.Encode(),
+		AuthToken: authToken,
+	}
+	json, err := json.Marshal(querySingle)
+	if err != nil {
+		logrus.Errorf("Failed to parse init message %v", err)
+		return err
+	}
+	// Send Json
+	logrus.Debugf("Sending arguments and auth-token")
+	err = c.write(json)
+	if err != nil {
+		return err
+	}
+
+	go c.pingLoop()
+
+	return nil
+}
+
+func (c *Client) pingLoop() {
+	for {
+		logrus.Debugf("Sending ping")
+		c.write([]byte("1"))
+		time.Sleep(30 * time.Second)
+	}
+}
+
+// Close will nicely close the dialer
+func (c *Client) Close() {
+	c.Conn.Close()
+}
+
+// ExitLoop will kill all goroutines launched by c.Loop()
+// ExitLoop() -> wait Loop() -> Close()
+func (c *Client) ExitLoop() {
+	fname := "ExitLoop"
+	openPoison(fname, c.poison)
+}
+
+// Loop will look indefinitely for new messages
+func (c *Client) Loop() error {
+	if !c.Connected {
+		err := c.Connect()
+		if err != nil {
+			return err
+		}
+	}
+
+	wg := &sync.WaitGroup{}
+
+	wg.Add(1)
+	go c.termsizeLoop(wg)
+
+	wg.Add(1)
+	go c.readLoop(wg)
+
+	wg.Add(1)
+	go c.writeLoop(wg)
+
+	/* Wait for all of the above goroutines to finish */
+	wg.Wait()
+
+	logrus.Debug("Client.Loop() exiting")
+	return nil
+}
+
+type winsize struct {
+	Rows    uint16 `json:"rows"`
+	Columns uint16 `json:"columns"`
+	// unused
+	x uint16
+	y uint16
+}
+
+type posionReason int
+
+const (
+	committedSuicide = iota
+	killed
+)
+
+func openPoison(fname string, poison chan bool) posionReason {
+	logrus.Debug(fname + " suicide")
+
+	/*
+	 * The close() may raise panic if multiple goroutines commit suicide at the
+	 * same time. Prevent that panic from bubbling up.
+	 */
+	defer func() {
+		if r := recover(); r != nil {
+			logrus.Debug("Prevented panic() of simultaneous suicides", r)
+		}
+	}()
+
+	/* Signal others to die */
+	close(poison)
+	return committedSuicide
+}
+
+func die(fname string, poison chan bool) posionReason {
+	logrus.Debug(fname + " died")
+
+	wasOpen := <-poison
+	if wasOpen {
+		logrus.Error("ERROR: The channel was open when it wasn't suppoed to be")
+	}
+
+	return killed
+}
+
+func (c *Client) termsizeLoop(wg *sync.WaitGroup) posionReason {
+
+	defer wg.Done()
+	fname := "termsizeLoop"
+
+	ch := make(chan os.Signal, 1)
+	notifySignalSIGWINCH(ch)
+	defer resetSignalSIGWINCH()
+
+	for {
+		if b, err := syscallTIOCGWINSZ(); err != nil {
+			logrus.Warn(err)
+		} else {
+			if err = c.write(append([]byte("2"), b...)); err != nil {
+				logrus.Warnf("ws.WriteMessage failed: %v", err)
+			}
+		}
+		select {
+		case <-c.poison:
+			/* Somebody poisoned the well; die */
+			return die(fname, c.poison)
+		case <-ch:
+		}
+	}
+}
+
+type exposeFd interface {
+	Fd() uintptr
+}
+
+func (c *Client) writeLoop(wg *sync.WaitGroup) posionReason {
+
+	defer wg.Done()
+	fname := "writeLoop"
+
+	buff := make([]byte, 128)
+	oldState, err := terminal.MakeRaw(0)
+	if err == nil {
+		defer terminal.Restore(0, oldState)
+	}
+
+	rdfs := &goselect.FDSet{}
+	reader := io.Reader(os.Stdin)
+	for {
+		select {
+		case <-c.poison:
+			/* Somebody poisoned the well; die */
+			return die(fname, c.poison)
+		default:
+		}
+
+		rdfs.Zero()
+		rdfs.Set(reader.(exposeFd).Fd())
+		err := goselect.Select(1, rdfs, nil, nil, 50*time.Millisecond)
+		if err != nil {
+			return openPoison(fname, c.poison)
+		}
+		if rdfs.IsSet(reader.(exposeFd).Fd()) {
+			size, err := reader.Read(buff)
+
+			if err != nil {
+				if err == io.EOF {
+					// Send EOF to GoTTY
+
+					// Send 'Input' marker, as defined in GoTTY::client_context.go,
+					// followed by EOT (a translation of Ctrl-D for terminals)
+					err = c.write(append([]byte("0"), byte(4)))
+
+					if err != nil {
+						return openPoison(fname, c.poison)
+					}
+					continue
+				} else {
+					return openPoison(fname, c.poison)
+				}
+			}
+
+			if size <= 0 {
+				continue
+			}
+
+			data := buff[:size]
+			err = c.write(append([]byte("0"), data...))
+			if err != nil {
+				return openPoison(fname, c.poison)
+			}
+		}
+	}
+}
+
+func (c *Client) readLoop(wg *sync.WaitGroup) posionReason {
+
+	defer wg.Done()
+	fname := "readLoop"
+
+	type MessageNonBlocking struct {
+		Data []byte
+		Err  error
+	}
+	msgChan := make(chan MessageNonBlocking)
+
+	for {
+		go func() {
+			_, data, err := c.Conn.ReadMessage()
+			msgChan <- MessageNonBlocking{Data: data, Err: err}
+		}()
+
+		select {
+		case <-c.poison:
+			/* Somebody poisoned the well; die */
+			return die(fname, c.poison)
+		case msg := <-msgChan:
+			if msg.Err != nil {
+
+				if _, ok := msg.Err.(*websocket.CloseError); !ok {
+					logrus.Warnf("c.Conn.ReadMessage: %v", msg.Err)
+				}
+				return openPoison(fname, c.poison)
+			}
+			if len(msg.Data) == 0 {
+
+				logrus.Warnf("An error has occured")
+				return openPoison(fname, c.poison)
+			}
+			switch msg.Data[0] {
+			case '0': // data
+				buf, err := base64.StdEncoding.DecodeString(string(msg.Data[1:]))
+				if err != nil {
+					logrus.Warnf("Invalid base64 content: %q", msg.Data[1:])
+					break
+				}
+				c.Output.Write(buf)
+			case '1': // pong
+			case '2': // new title
+				newTitle := string(msg.Data[1:])
+				fmt.Fprintf(c.Output, "\033]0;%s\007", newTitle)
+			case '3': // json prefs
+				logrus.Debugf("Unhandled protocol message: json pref: %s", string(msg.Data[1:]))
+			case '4': // autoreconnect
+				logrus.Debugf("Unhandled protocol message: autoreconnect: %s", string(msg.Data))
+			default:
+				logrus.Warnf("Unhandled protocol message: %s", string(msg.Data))
+			}
+		}
+	}
+}
+
+// SetOutput changes the output stream
+func (c *Client) SetOutput(w io.Writer) {
+	c.Output = w
+}
+
+// ParseURL parses an URL which may be incomplete and tries to standardize it
+func ParseURL(input string) (string, error) {
+	parsed, err := url.Parse(input)
+	if err != nil {
+		return "", err
+	}
+	switch parsed.Scheme {
+	case "http", "https":
+		// everything is ok
+	default:
+		return ParseURL(fmt.Sprintf("http://%s", input))
+	}
+	return parsed.String(), nil
+}
+
+// NewClient returns a GoTTY client object
+func NewClient(inputURL string) (*Client, error) {
+	url, err := ParseURL(inputURL)
+	if err != nil {
+		return nil, err
+	}
+	return &Client{
+		Dialer:     &websocket.Dialer{},
+		URL:        url,
+		WriteMutex: &sync.Mutex{},
+		Output:     os.Stdout,
+		poison:     make(chan bool),
+	}, nil
+}

vendor/github.com/renstrom/fuzzysearch/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Peter Renström
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/renstrom/fuzzysearch/fuzzy/fuzzy.go

@@ -0,0 +1,167 @@
+// Fuzzy searching allows for flexibly matching a string with partial input,
+// useful for filtering data very quickly based on lightweight user input.
+package fuzzy
+
+import (
+	"unicode"
+	"unicode/utf8"
+)
+
+var noop = func(r rune) rune { return r }
+
+// Match returns true if source matches target using a fuzzy-searching
+// algorithm. Note that it doesn't implement Levenshtein distance (see
+// RankMatch instead), but rather a simplified version where there's no
+// approximation. The method will return true only if each character in the
+// source can be found in the target and occurs after the preceding matches.
+func Match(source, target string) bool {
+	return match(source, target, noop)
+}
+
+// MatchFold is a case-insensitive version of Match.
+func MatchFold(source, target string) bool {
+	return match(source, target, unicode.ToLower)
+}
+
+func match(source, target string, fn func(rune) rune) bool {
+	lenDiff := len(target) - len(source)
+
+	if lenDiff < 0 {
+		return false
+	}
+
+	if lenDiff == 0 && source == target {
+		return true
+	}
+
+Outer:
+	for _, r1 := range source {
+		for i, r2 := range target {
+			if fn(r1) == fn(r2) {
+				target = target[i+utf8.RuneLen(r2):]
+				continue Outer
+			}
+		}
+		return false
+	}
+
+	return true
+}
+
+// Find will return a list of strings in targets that fuzzy matches source.
+func Find(source string, targets []string) []string {
+	return find(source, targets, noop)
+}
+
+// FindFold is a case-insensitive version of Find.
+func FindFold(source string, targets []string) []string {
+	return find(source, targets, unicode.ToLower)
+}
+
+func find(source string, targets []string, fn func(rune) rune) []string {
+	var matches []string
+
+	for _, target := range targets {
+		if match(source, target, fn) {
+			matches = append(matches, target)
+		}
+	}
+
+	return matches
+}
+
+// RankMatch is similar to Match except it will measure the Levenshtein
+// distance between the source and the target and return its result. If there
+// was no match, it will return -1.
+// Given the requirements of match, RankMatch only needs to perform a subset of
+// the Levenshtein calculation, only deletions need be considered, required
+// additions and substitutions would fail the match test.
+func RankMatch(source, target string) int {
+	return rank(source, target, noop)
+}
+
+// RankMatchFold is a case-insensitive version of RankMatch.
+func RankMatchFold(source, target string) int {
+	return rank(source, target, unicode.ToLower)
+}
+
+func rank(source, target string, fn func(rune) rune) int {
+	lenDiff := len(target) - len(source)
+
+	if lenDiff < 0 {
+		return -1
+	}
+
+	if lenDiff == 0 && source == target {
+		return 0
+	}
+
+	runeDiff := 0
+
+Outer:
+	for _, r1 := range source {
+		for i, r2 := range target {
+			if fn(r1) == fn(r2) {
+				target = target[i+utf8.RuneLen(r2):]
+				continue Outer
+			} else {
+				runeDiff++
+			}
+		}
+		return -1
+	}
+
+	// Count up remaining char
+	for len(target) > 0 {
+		target = target[utf8.RuneLen(rune(target[0])):]
+		runeDiff++
+	}
+
+	return runeDiff
+}
+
+// RankFind is similar to Find, except it will also rank all matches using
+// Levenshtein distance.
+func RankFind(source string, targets []string) Ranks {
+	var r Ranks
+	for _, target := range find(source, targets, noop) {
+		distance := LevenshteinDistance(source, target)
+		r = append(r, Rank{source, target, distance})
+	}
+	return r
+}
+
+// RankFindFold is a case-insensitive version of RankFind.
+func RankFindFold(source string, targets []string) Ranks {
+	var r Ranks
+	for _, target := range find(source, targets, unicode.ToLower) {
+		distance := LevenshteinDistance(source, target)
+		r = append(r, Rank{source, target, distance})
+	}
+	return r
+}
+
+type Rank struct {
+	// Source is used as the source for matching.
+	Source string
+
+	// Target is the word matched against.
+	Target string
+
+	// Distance is the Levenshtein distance between Source and Target.
+	Distance int
+}
+
+type Ranks []Rank
+
+func (r Ranks) Len() int {
+	return len(r)
+}
+
+func (r Ranks) Swap(i, j int) {
+	r[i], r[j] = r[j], r[i]
+}
+
+func (r Ranks) Less(i, j int) bool {
+	return r[i].Distance < r[j].Distance
+}