packer-cn/common/step_provision.go

172 lines
5.1 KiB
Go

package common
import (
"context"
"fmt"
"log"
"os"
"strconv"
"time"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
// StepProvision runs the provisioners.
//
// Uses:
// communicator packer.Communicator
// hook packer.Hook
// ui packer.Ui
//
// Produces:
// <nothing>
const HttpIPNotImplemented = "ERR_HTTP_IP_NOT_IMPLEMENTED_BY_BUILDER"
const HttpPortNotImplemented = "ERR_HTTP_PORT_NOT_IMPLEMENTED_BY_BUILDER"
const HttpAddrNotImplemented = "ERR_HTTP_ADDR_NOT_IMPLEMENTED_BY_BUILDER"
func PopulateProvisionHookData(state multistep.StateBag) map[string]interface{} {
hookData := make(map[string]interface{})
// Load Builder hook data from state, if it has been set.
hd, ok := state.GetOk("generated_data")
if ok {
hookData = hd.(map[string]interface{})
}
// Warn user that the id isn't implemented
hookData["ID"] = "ERR_ID_NOT_IMPLEMENTED_BY_BUILDER"
// instance_id is placed in state by the builders.
// Not yet implemented in Chroot, lxc/lxd, Azure, Qemu.
// Implemented in most others including digitalOcean (droplet id),
// docker (container_id), and clouds which use "server" internally instead
// of instance.
id, ok := state.GetOk("instance_id")
if ok {
hookData["ID"] = id
}
hookData["PackerRunUUID"] = os.Getenv("PACKER_RUN_UUID")
// Packer HTTP info
hookData["PackerHTTPIP"] = HttpIPNotImplemented
hookData["PackerHTTPPort"] = HttpPortNotImplemented
hookData["PackerHTTPAddr"] = HttpAddrNotImplemented
httpPort, okPort := state.GetOk("http_port")
if okPort {
hookData["PackerHTTPPort"] = strconv.Itoa(httpPort.(int))
}
httIP, okIP := state.GetOk("http_ip")
if okIP {
hookData["PackerHTTPIP"] = httIP.(string)
}
if okPort && okIP {
hookData["PackerHTTPAddr"] = fmt.Sprintf("%s:%s", hookData["PackerHTTPIP"], hookData["PackerHTTPPort"])
}
// Read communicator data into hook data
comm, ok := state.GetOk("communicator_config")
if !ok {
log.Printf("Unable to load communicator config from state to populate provisionHookData")
return hookData
}
commConf := comm.(*communicator.Config)
// Loop over all field values and retrieve them from the ssh config
hookData["Host"] = commConf.Host()
hookData["Port"] = commConf.Port()
hookData["User"] = commConf.User()
hookData["Password"] = commConf.Password()
hookData["ConnType"] = commConf.Type
hookData["SSHPublicKey"] = string(commConf.SSHPublicKey)
hookData["SSHPrivateKey"] = string(commConf.SSHPrivateKey)
hookData["SSHPrivateKeyFile"] = commConf.SSHPrivateKeyFile
// Backwards compatibility; in practice, WinRMPassword is fulfilled by
// Password.
hookData["WinRMPassword"] = commConf.WinRMPassword
return hookData
}
type StepProvision struct {
Comm packer.Communicator
}
func (s *StepProvision) runWithHook(ctx context.Context, state multistep.StateBag, hooktype string) multistep.StepAction {
// hooktype will be either packer.HookProvision or packer.HookCleanupProvision
comm := s.Comm
if comm == nil {
raw, ok := state.Get("communicator").(packer.Communicator)
if ok {
comm = raw.(packer.Communicator)
}
}
hook := state.Get("hook").(packer.Hook)
ui := state.Get("ui").(packer.Ui)
hookData := PopulateProvisionHookData(state)
// Update state generated_data with complete hookData
// to make them accessible by post-processors
state.Put("generated_data", hookData)
// Run the provisioner in a goroutine so we can continually check
// for cancellations...
if hooktype == packer.HookProvision {
log.Println("Running the provision hook")
} else if hooktype == packer.HookCleanupProvision {
ui.Say("Provisioning step had errors: Running the cleanup provisioner, if present...")
}
errCh := make(chan error, 1)
go func() {
errCh <- hook.Run(ctx, hooktype, ui, comm, hookData)
}()
for {
select {
case err := <-errCh:
if err != nil {
if hooktype == packer.HookProvision {
// We don't overwrite the error if it's a cleanup
// provisioner being run.
state.Put("error", err)
} else if hooktype == packer.HookCleanupProvision {
origErr := state.Get("error").(error)
state.Put("error", fmt.Errorf("Cleanup failed: %s. "+
"Original Provisioning error: %s", err, origErr))
}
return multistep.ActionHalt
}
return multistep.ActionContinue
case <-ctx.Done():
log.Printf("Cancelling provisioning due to context cancellation: %s", ctx.Err())
return multistep.ActionHalt
case <-time.After(1 * time.Second):
if _, ok := state.GetOk(multistep.StateCancelled); ok {
log.Println("Cancelling provisioning due to interrupt...")
return multistep.ActionHalt
}
}
}
}
func (s *StepProvision) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
return s.runWithHook(ctx, state, packer.HookProvision)
}
func (s *StepProvision) Cleanup(state multistep.StateBag) {
// We have a "final" provisioner that gets defined by "error-cleanup-provisioner"
// which we only call if there's an error during the provision run and
// the "error-cleanup-provisioner" is defined.
if _, ok := state.GetOk("error"); ok {
s.runWithHook(context.Background(), state, packer.HookCleanupProvision)
}
}