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step_register_ami.go
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step_register_ami.go
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package chroot
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/mitchellh/multistep"
awscommon "github.com/mitchellh/packer/builder/amazon/common"
"github.com/mitchellh/packer/packer"
)
// StepRegisterAMI creates the AMI.
type StepRegisterAMI struct {
RootVolumeSize int64
}
func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
ec2conn := state.Get("ec2").(*ec2.EC2)
snapshotId := state.Get("snapshot_id").(string)
ui := state.Get("ui").(packer.Ui)
ui.Say("Registering the AMI...")
var (
registerOpts *ec2.RegisterImageInput
mappings []*ec2.BlockDeviceMapping
image *ec2.Image
rootDeviceName string
)
if config.FromScratch {
mappings = config.AMIBlockDevices.BuildAMIDevices()
rootDeviceName = config.RootDeviceName
} else {
image = state.Get("source_image").(*ec2.Image)
mappings = image.BlockDeviceMappings
rootDeviceName = *image.RootDeviceName
}
newMappings := make([]*ec2.BlockDeviceMapping, len(mappings))
for i, device := range mappings {
newDevice := device
if *newDevice.DeviceName == rootDeviceName {
if newDevice.Ebs != nil {
newDevice.Ebs.SnapshotId = aws.String(snapshotId)
} else {
newDevice.Ebs = &ec2.EbsBlockDevice{SnapshotId: aws.String(snapshotId)}
}
if config.FromScratch || s.RootVolumeSize > *newDevice.Ebs.VolumeSize {
newDevice.Ebs.VolumeSize = aws.Int64(s.RootVolumeSize)
}
}
// assume working from a snapshot, so we unset the Encrypted field if set,
// otherwise AWS API will return InvalidParameter
if newDevice.Ebs != nil && newDevice.Ebs.Encrypted != nil {
newDevice.Ebs.Encrypted = nil
}
newMappings[i] = newDevice
}
if config.FromScratch {
registerOpts = &ec2.RegisterImageInput{
Name: &config.AMIName,
Architecture: aws.String(ec2.ArchitectureValuesX8664),
RootDeviceName: aws.String(rootDeviceName),
VirtualizationType: aws.String(config.AMIVirtType),
BlockDeviceMappings: newMappings,
}
} else {
registerOpts = buildRegisterOpts(config, image, newMappings)
}
// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
if config.AMIEnhancedNetworking {
registerOpts.SriovNetSupport = aws.String("simple")
}
registerResp, err := ec2conn.RegisterImage(registerOpts)
if err != nil {
state.Put("error", fmt.Errorf("Error registering AMI: %s", err))
ui.Error(state.Get("error").(error).Error())
return multistep.ActionHalt
}
// Set the AMI ID in the state
ui.Say(fmt.Sprintf("AMI: %s", *registerResp.ImageId))
amis := make(map[string]string)
amis[*ec2conn.Config.Region] = *registerResp.ImageId
state.Put("amis", amis)
// Wait for the image to become ready
stateChange := awscommon.StateChangeConf{
Pending: []string{"pending"},
Target: "available",
Refresh: awscommon.AMIStateRefreshFunc(ec2conn, *registerResp.ImageId),
StepState: state,
}
ui.Say("Waiting for AMI to become ready...")
if _, err := awscommon.WaitForState(&stateChange); err != nil {
err := fmt.Errorf("Error waiting for AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
return multistep.ActionContinue
}
func (s *StepRegisterAMI) Cleanup(state multistep.StateBag) {}
func buildRegisterOpts(config *Config, image *ec2.Image, mappings []*ec2.BlockDeviceMapping) *ec2.RegisterImageInput {
registerOpts := &ec2.RegisterImageInput{
Name: &config.AMIName,
Architecture: image.Architecture,
RootDeviceName: image.RootDeviceName,
BlockDeviceMappings: mappings,
VirtualizationType: image.VirtualizationType,
}
if config.AMIVirtType != "" {
registerOpts.VirtualizationType = aws.String(config.AMIVirtType)
}
if config.AMIVirtType != "hvm" {
registerOpts.KernelId = image.KernelId
registerOpts.RamdiskId = image.RamdiskId
}
return registerOpts
}