120 lines
3.4 KiB
Go
120 lines
3.4 KiB
Go
package common
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import (
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"fmt"
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"strings"
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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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"github.com/hashicorp/packer/template/interpolate"
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)
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// BlockDevice
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type BlockDevice struct {
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DeleteOnTermination bool `mapstructure:"delete_on_termination"`
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DeviceName string `mapstructure:"device_name"`
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Encrypted bool `mapstructure:"encrypted"`
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IOPS int64 `mapstructure:"iops"`
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NoDevice bool `mapstructure:"no_device"`
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SnapshotId string `mapstructure:"snapshot_id"`
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VirtualName string `mapstructure:"virtual_name"`
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VolumeType string `mapstructure:"volume_type"`
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VolumeSize int64 `mapstructure:"volume_size"`
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KmsKeyId string `mapstructure:"kms_key_id"`
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}
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type BlockDevices struct {
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AMIBlockDevices `mapstructure:",squash"`
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LaunchBlockDevices `mapstructure:",squash"`
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}
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type AMIBlockDevices struct {
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AMIMappings []BlockDevice `mapstructure:"ami_block_device_mappings"`
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}
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type LaunchBlockDevices struct {
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LaunchMappings []BlockDevice `mapstructure:"launch_block_device_mappings"`
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}
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func buildBlockDevices(b []BlockDevice) []*ec2.BlockDeviceMapping {
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var blockDevices []*ec2.BlockDeviceMapping
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for _, blockDevice := range b {
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mapping := &ec2.BlockDeviceMapping{
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DeviceName: aws.String(blockDevice.DeviceName),
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}
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if blockDevice.NoDevice {
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mapping.NoDevice = aws.String("")
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} else if blockDevice.VirtualName != "" {
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if strings.HasPrefix(blockDevice.VirtualName, "ephemeral") {
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mapping.VirtualName = aws.String(blockDevice.VirtualName)
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}
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} else {
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ebsBlockDevice := &ec2.EbsBlockDevice{
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DeleteOnTermination: aws.Bool(blockDevice.DeleteOnTermination),
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}
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if blockDevice.VolumeType != "" {
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ebsBlockDevice.VolumeType = aws.String(blockDevice.VolumeType)
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}
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if blockDevice.VolumeSize > 0 {
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ebsBlockDevice.VolumeSize = aws.Int64(blockDevice.VolumeSize)
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}
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// IOPS is only valid for io1 type
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if blockDevice.VolumeType == "io1" {
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ebsBlockDevice.Iops = aws.Int64(blockDevice.IOPS)
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}
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// You cannot specify Encrypted if you specify a Snapshot ID
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if blockDevice.SnapshotId != "" {
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ebsBlockDevice.SnapshotId = aws.String(blockDevice.SnapshotId)
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} else if blockDevice.Encrypted {
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ebsBlockDevice.Encrypted = aws.Bool(blockDevice.Encrypted)
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}
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if blockDevice.KmsKeyId != "" {
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ebsBlockDevice.KmsKeyId = aws.String(blockDevice.KmsKeyId)
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}
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mapping.Ebs = ebsBlockDevice
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}
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blockDevices = append(blockDevices, mapping)
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}
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return blockDevices
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}
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func (b *BlockDevice) Prepare(ctx *interpolate.Context) error {
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// Warn that encrypted must be true when setting kms_key_id
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if b.KmsKeyId != "" && b.Encrypted == false {
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return fmt.Errorf("The device %v, must also have `encrypted: "+
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"true` when setting a kms_key_id.", b.DeviceName)
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}
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return nil
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}
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func (b *BlockDevices) Prepare(ctx *interpolate.Context) (errs []error) {
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for _, d := range b.AMIMappings {
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if err := d.Prepare(ctx); err != nil {
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errs = append(errs, fmt.Errorf("AMIMapping: %s", err.Error()))
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}
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}
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for _, d := range b.LaunchMappings {
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if err := d.Prepare(ctx); err != nil {
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errs = append(errs, fmt.Errorf("LaunchMapping: %s", err.Error()))
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}
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}
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return errs
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}
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func (b *AMIBlockDevices) BuildAMIDevices() []*ec2.BlockDeviceMapping {
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return buildBlockDevices(b.AMIMappings)
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}
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func (b *LaunchBlockDevices) BuildLaunchDevices() []*ec2.BlockDeviceMapping {
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return buildBlockDevices(b.LaunchMappings)
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}
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