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step_create_tags.go
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/
step_create_tags.go
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package common
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
type StepCreateTags struct {
Tags map[string]string
}
func (s *StepCreateTags) Run(state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
ui := state.Get("ui").(packer.Ui)
amis := state.Get("amis").(map[string]string)
if len(s.Tags) > 0 {
for region, ami := range amis {
ui.Say(fmt.Sprintf("Adding tags to AMI (%s)...", ami))
var ec2Tags []*ec2.Tag
for key, value := range s.Tags {
ui.Message(fmt.Sprintf("Adding tag: \"%s\": \"%s\"", key, value))
ec2Tags = append(ec2Tags, &ec2.Tag{
Key: aws.String(key),
Value: aws.String(value),
})
}
// Declare list of resources to tag
resourceIds := []*string{&ami}
awsConfig := aws.Config{
Credentials: ec2conn.Config.Credentials,
Region: aws.String(region),
}
session := session.New(&awsConfig)
regionconn := ec2.New(session)
// Retrieve image list for given AMI
imageResp, err := regionconn.DescribeImages(&ec2.DescribeImagesInput{
ImageIds: resourceIds,
})
if err != nil {
err := fmt.Errorf("Error retrieving details for AMI (%s): %s", ami, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
if len(imageResp.Images) == 0 {
err := fmt.Errorf("Error retrieving details for AMI (%s), no images found", ami)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
image := imageResp.Images[0]
// Add only those with a Snapshot ID, i.e. not Ephemeral
for _, device := range image.BlockDeviceMappings {
if device.Ebs != nil && device.Ebs.SnapshotId != nil {
ui.Say(fmt.Sprintf("Tagging snapshot: %s", *device.Ebs.SnapshotId))
resourceIds = append(resourceIds, device.Ebs.SnapshotId)
}
}
_, err = regionconn.CreateTags(&ec2.CreateTagsInput{
Resources: resourceIds,
Tags: ec2Tags,
})
if err != nil {
err := fmt.Errorf("Error adding tags to Resources (%#v): %s", resourceIds, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
}
return multistep.ActionContinue
}
func (s *StepCreateTags) Cleanup(state multistep.StateBag) {
// No cleanup...
}