115 lines
2.9 KiB
Go
115 lines
2.9 KiB
Go
package docker
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import (
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"fmt"
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"os"
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"github.com/mitchellh/mapstructure"
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"github.com/mitchellh/packer/common"
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"github.com/mitchellh/packer/helper/communicator"
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"github.com/mitchellh/packer/helper/config"
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"github.com/mitchellh/packer/packer"
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"github.com/mitchellh/packer/template/interpolate"
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)
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var (
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errArtifactNotUsed = fmt.Errorf("No instructions given for handling the artifact; expected commit, discard, or export_path")
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errArtifactUseConflict = fmt.Errorf("Cannot specify more than one of commit, discard, and export_path")
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errExportPathNotFile = fmt.Errorf("export_path must be a file, not a directory")
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errImageNotSpecified = fmt.Errorf("Image must be specified")
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)
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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Comm communicator.Config `mapstructure:",squash"`
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Commit bool
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Discard bool
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ExportPath string `mapstructure:"export_path"`
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Image string
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Pty bool
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Pull bool
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RunCommand []string `mapstructure:"run_command"`
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Volumes map[string]string
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// This is used to login to dockerhub to pull a private base container. For
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// pushing to dockerhub, see the docker post-processors
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Login bool
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LoginEmail string `mapstructure:"login_email"`
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LoginPassword string `mapstructure:"login_password"`
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LoginServer string `mapstructure:"login_server"`
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LoginUsername string `mapstructure:"login_username"`
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ctx interpolate.Context
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}
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func NewConfig(raws ...interface{}) (*Config, []string, error) {
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c := new(Config)
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var md mapstructure.Metadata
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err := config.Decode(c, &config.DecodeOpts{
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Metadata: &md,
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Interpolate: true,
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InterpolateContext: &c.ctx,
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InterpolateFilter: &interpolate.RenderFilter{
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Exclude: []string{
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"run_command",
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},
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},
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}, raws...)
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if err != nil {
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return nil, nil, err
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}
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// Defaults
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if len(c.RunCommand) == 0 {
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c.RunCommand = []string{"-d", "-i", "-t", "{{.Image}}", "/bin/bash"}
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}
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// Default Pull if it wasn't set
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hasPull := false
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for _, k := range md.Keys {
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if k == "Pull" {
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hasPull = true
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break
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}
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}
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if !hasPull {
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c.Pull = true
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}
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// Default to the normal Docker type
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if c.Comm.Type == "" {
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c.Comm.Type = "docker"
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}
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var errs *packer.MultiError
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if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
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errs = packer.MultiErrorAppend(errs, es...)
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}
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if c.Image == "" {
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errs = packer.MultiErrorAppend(errs, errImageNotSpecified)
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}
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if (c.ExportPath != "" && c.Commit) || (c.ExportPath != "" && c.Discard) || (c.Commit && c.Discard) {
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errs = packer.MultiErrorAppend(errs, errArtifactUseConflict)
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}
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if c.ExportPath == "" && !c.Commit && !c.Discard {
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errs = packer.MultiErrorAppend(errs, errArtifactNotUsed)
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}
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if c.ExportPath != "" {
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if fi, err := os.Stat(c.ExportPath); err == nil && fi.IsDir() {
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errs = packer.MultiErrorAppend(errs, errExportPathNotFile)
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}
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}
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if errs != nil && len(errs.Errors) > 0 {
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return nil, nil, errs
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}
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return c, nil, nil
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}
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