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fix step_shutdown when a null communicator is used (#10178)

This commit is contained in:
Megan Marsh 2020-10-28 03:14:03 -07:00 committed by GitHub
parent 8f3a115c5a
commit fb3d357e84
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 107 additions and 11 deletions
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6
builder/qemu/builder.go
View File

@ -130,7 +130,11 @@ func (b *Builder) Run(ctx context.Context, ui packer.Ui, hook packer.Hook) (pack
&common.StepCleanupTempKeys{
Comm: &b.config.CommConfig.Comm,
},
new(stepShutdown),
&stepShutdown{
ShutdownTimeout: b.config.ShutdownTimeout,
ShutdownCommand: b.config.ShutdownCommand,
Comm: &b.config.CommConfig.Comm,
},
&stepConvertDisk{
DiskCompression: b.config.DiskCompression,
Format: b.config.Format,

22
builder/qemu/step_shutdown.go
View File

@ -7,6 +7,7 @@ import (
"log"
"time"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
@ -22,18 +23,21 @@ import (
//
// Produces:
// <nothing>
type stepShutdown struct{}
type stepShutdown struct {
ShutdownCommand string
ShutdownTimeout time.Duration
Comm *communicator.Config
}
func (s *stepShutdown) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
if state.Get("communicator") == nil {
if s.Comm.Type == "none" {
cancelCh := make(chan struct{}, 1)
go func() {
defer close(cancelCh)
<-time.After(config.ShutdownTimeout)
<-time.After(s.ShutdownTimeout)
}()
ui.Say("Waiting for shutdown...")
if ok := driver.WaitForShutdown(cancelCh); ok {
@ -47,11 +51,11 @@ func (s *stepShutdown) Run(ctx context.Context, state multistep.StateBag) multis
}
}
if s.ShutdownCommand != "" {
comm := state.Get("communicator").(packer.Communicator)
if config.ShutdownCommand != "" {
ui.Say("Gracefully halting virtual machine...")
log.Printf("Executing shutdown command: %s", config.ShutdownCommand)
cmd := &packer.RemoteCmd{Command: config.ShutdownCommand}
log.Printf("Executing shutdown command: %s", s.ShutdownCommand)
cmd := &packer.RemoteCmd{Command: s.ShutdownCommand}
if err := cmd.RunWithUi(ctx, comm, ui); err != nil {
err := fmt.Errorf("Failed to send shutdown command: %s", err)
state.Put("error", err)
@ -63,10 +67,10 @@ func (s *stepShutdown) Run(ctx context.Context, state multistep.StateBag) multis
cancelCh := make(chan struct{}, 1)
go func() {
defer close(cancelCh)
<-time.After(config.ShutdownTimeout)
<-time.After(s.ShutdownTimeout)
}()
log.Printf("Waiting max %s for shutdown to complete", config.ShutdownTimeout)
log.Printf("Waiting max %s for shutdown to complete", s.ShutdownTimeout)
if ok := driver.WaitForShutdown(cancelCh); !ok {
err := errors.New("Timeout while waiting for machine to shut down.")
state.Put("error", err)

88
builder/qemu/step_shutdown_test.go Normal file
View File

@ -0,0 +1,88 @@
package qemu
import (
"context"
"testing"
"time"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
func Test_Shutdown_Null_success(t *testing.T) {
state := new(multistep.BasicStateBag)
state.Put("ui", packer.TestUi(t))
driverMock := new(DriverMock)
driverMock.WaitForShutdownState = true
state.Put("driver", driverMock)
step := &stepShutdown{
ShutdownCommand: "",
ShutdownTimeout: 5 * time.Minute,
Comm: &communicator.Config{
Type: "none",
},
}
action := step.Run(context.TODO(), state)
if action != multistep.ActionContinue {
t.Fatalf("Should have successfully shut down.")
}
err := state.Get("error")
if err != nil {
err = err.(error)
t.Fatalf("Shutdown shouldn't have errored; err: %v", err)
}
}
func Test_Shutdown_Null_failure(t *testing.T) {
state := new(multistep.BasicStateBag)
state.Put("ui", packer.TestUi(t))
driverMock := new(DriverMock)
driverMock.WaitForShutdownState = false
state.Put("driver", driverMock)
step := &stepShutdown{
ShutdownCommand: "",
ShutdownTimeout: 5 * time.Minute,
Comm: &communicator.Config{
Type: "none",
},
}
action := step.Run(context.TODO(), state)
if action != multistep.ActionHalt {
t.Fatalf("Shouldn't have successfully shut down.")
}
err := state.Get("error")
if err == nil {
t.Fatalf("Shutdown should have errored")
}
}
func Test_Shutdown_NoShutdownCommand(t *testing.T) {
state := new(multistep.BasicStateBag)
state.Put("ui", packer.TestUi(t))
driverMock := new(DriverMock)
state.Put("driver", driverMock)
step := &stepShutdown{
ShutdownCommand: "",
ShutdownTimeout: 5 * time.Minute,
Comm: &communicator.Config{
Type: "ssh",
},
}
action := step.Run(context.TODO(), state)
if action != multistep.ActionContinue {
t.Fatalf("Should have successfully shut down.")
}
if !driverMock.StopCalled {
t.Fatalf("should have called Stop through the driver.")
}
err := state.Get("error")
if err != nil {
err = err.(error)
t.Fatalf("Shutdown shouldn't have errored; err: %v", err)
}
}