packer-cn/common/step_provision.go

105 lines
2.9 KiB
Go

package common
import (
"context"
"fmt"
"log"
"time"
"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>
type StepProvision struct {
Comm packer.Communicator
}
func PopulateProvisionHookData(state multistep.StateBag) packer.ProvisionHookData {
hookData := packer.NewProvisionHookData()
// Add WinRMPassword to runtime data
WinRMPassword, ok := state.GetOk("winrm_password")
if ok {
hookData.WinRMPassword = WinRMPassword.(string)
}
return hookData
}
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)
// 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)
}
}