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package common
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
type StepStopEBSBackedInstance struct {
Skip bool
DisableStopInstance bool
}
func (s *StepStopEBSBackedInstance) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
instance := state.Get("instance").(*ec2.Instance)
ui := state.Get("ui").(packer.Ui)
// Skip when it is a spot instance
if s.Skip {
return multistep.ActionContinue
}
var err error
if !s.DisableStopInstance {
// Stop the instance so we can create an AMI from it
ui.Say("Stopping the source instance...")
// Amazon EC2 API follows an eventual consistency model.
// This means that if you run a command to modify or describe a resource
// that you just created, its ID might not have propagated throughout
// the system, and you will get an error responding that the resource
// does not exist.
// Work around this by retrying a few times, up to about 5 minutes.
err := common.Retry(10, 60, 6, func(i uint) (bool, error) {
ui.Message(fmt.Sprintf("Stopping instance, attempt %d", i+1))
_, err = ec2conn.StopInstances(&ec2.StopInstancesInput{
InstanceIds: []*string{instance.InstanceId},
})
if err == nil {
// success
return true, nil
}
if awsErr, ok := err.(awserr.Error); ok {
if awsErr.Code() == "InvalidInstanceID.NotFound" {
ui.Message(fmt.Sprintf(
"Error stopping instance; will retry ..."+
"Error: %s", err))
// retry
return false, nil
}
}
// errored, but not in expected way. Don't want to retry
return true, err
})
if err != nil {
err := fmt.Errorf("Error stopping instance: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
} else {
ui.Say("Automatic instance stop disabled. Please stop instance manually.")
}
// Wait for the instance to actually stop
ui.Say("Waiting for the instance to stop...")
err = ec2conn.WaitUntilInstanceStoppedWithContext(ctx,
&ec2.DescribeInstancesInput{
InstanceIds: []*string{instance.InstanceId},
},
getWaiterOptions()...)
if err != nil {
err := fmt.Errorf("Error waiting for instance to stop: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
return multistep.ActionContinue
}
func (s *StepStopEBSBackedInstance) Cleanup(multistep.StateBag) {
// No cleanup...
}
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