137 lines
4.4 KiB
Go
137 lines
4.4 KiB
Go
package ebssurrogate
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import (
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"context"
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"fmt"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/ec2"
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awscommon "github.com/hashicorp/packer/builder/amazon/common"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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)
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// StepRegisterAMI creates the AMI.
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type StepRegisterAMI struct {
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RootDevice RootBlockDevice
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BlockDevices []*ec2.BlockDeviceMapping
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EnableAMIENASupport bool
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EnableAMISriovNetSupport bool
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image *ec2.Image
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}
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func (s *StepRegisterAMI) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
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config := state.Get("config").(*Config)
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ec2conn := state.Get("ec2").(*ec2.EC2)
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snapshotId := state.Get("snapshot_id").(string)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Registering the AMI...")
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blockDevicesExcludingRoot := DeduplicateRootVolume(s.BlockDevices, s.RootDevice, snapshotId)
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registerOpts := &ec2.RegisterImageInput{
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Name: &config.AMIName,
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Architecture: aws.String(ec2.ArchitectureValuesX8664),
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RootDeviceName: aws.String(s.RootDevice.DeviceName),
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VirtualizationType: aws.String(config.AMIVirtType),
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BlockDeviceMappings: blockDevicesExcludingRoot,
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}
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if s.EnableAMISriovNetSupport {
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// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
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// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
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registerOpts.SriovNetSupport = aws.String("simple")
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}
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if s.EnableAMIENASupport {
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// Set EnaSupport to true
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// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
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registerOpts.EnaSupport = aws.Bool(true)
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}
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registerResp, err := ec2conn.RegisterImage(registerOpts)
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if err != nil {
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state.Put("error", fmt.Errorf("Error registering AMI: %s", err))
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ui.Error(state.Get("error").(error).Error())
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return multistep.ActionHalt
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}
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// Set the AMI ID in the state
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ui.Say(fmt.Sprintf("AMI: %s", *registerResp.ImageId))
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amis := make(map[string]string)
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amis[*ec2conn.Config.Region] = *registerResp.ImageId
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state.Put("amis", amis)
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// Wait for the image to become ready
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stateChange := awscommon.StateChangeConf{
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Pending: []string{"pending"},
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Target: "available",
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Refresh: awscommon.AMIStateRefreshFunc(ec2conn, *registerResp.ImageId),
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StepState: state,
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}
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ui.Say("Waiting for AMI to become ready...")
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if _, err := awscommon.WaitForState(&stateChange); err != nil {
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err := fmt.Errorf("Error waiting for AMI: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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imagesResp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{ImageIds: []*string{registerResp.ImageId}})
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if err != nil {
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err := fmt.Errorf("Error searching for AMI: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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s.image = imagesResp.Images[0]
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snapshots := make(map[string][]string)
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for _, blockDeviceMapping := range imagesResp.Images[0].BlockDeviceMappings {
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if blockDeviceMapping.Ebs != nil && blockDeviceMapping.Ebs.SnapshotId != nil {
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snapshots[*ec2conn.Config.Region] = append(snapshots[*ec2conn.Config.Region], *blockDeviceMapping.Ebs.SnapshotId)
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}
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}
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state.Put("snapshots", snapshots)
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return multistep.ActionContinue
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}
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func (s *StepRegisterAMI) Cleanup(state multistep.StateBag) {
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if s.image == nil {
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return
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}
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_, cancelled := state.GetOk(multistep.StateCancelled)
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_, halted := state.GetOk(multistep.StateHalted)
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if !cancelled && !halted {
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return
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}
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ec2conn := state.Get("ec2").(*ec2.EC2)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Deregistering the AMI because cancellation or error...")
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deregisterOpts := &ec2.DeregisterImageInput{ImageId: s.image.ImageId}
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if _, err := ec2conn.DeregisterImage(deregisterOpts); err != nil {
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ui.Error(fmt.Sprintf("Error deregistering AMI, may still be around: %s", err))
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return
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}
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}
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func DeduplicateRootVolume(BlockDevices []*ec2.BlockDeviceMapping, RootDevice RootBlockDevice, snapshotId string) []*ec2.BlockDeviceMapping {
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// Defensive coding to make sure we only add the root volume once
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blockDevicesExcludingRoot := make([]*ec2.BlockDeviceMapping, 0, len(BlockDevices))
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for _, blockDevice := range BlockDevices {
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if *blockDevice.DeviceName == RootDevice.SourceDeviceName {
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continue
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}
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blockDevicesExcludingRoot = append(blockDevicesExcludingRoot, blockDevice)
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}
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blockDevicesExcludingRoot = append(blockDevicesExcludingRoot, RootDevice.createBlockDeviceMapping(snapshotId))
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return blockDevicesExcludingRoot
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}
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