2015-05-22 23:06:28 +02:00
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package aws
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import (
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"bytes"
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"fmt"
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"time"
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"github.com/awslabs/aws-sdk-go/aws"
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"github.com/awslabs/aws-sdk-go/aws/awserr"
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"github.com/awslabs/aws-sdk-go/service/ec2"
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"github.com/hashicorp/terraform/helper/hashcode"
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"github.com/hashicorp/terraform/helper/resource"
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"github.com/hashicorp/terraform/helper/schema"
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)
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func resourceAwsVolumeAttachment() *schema.Resource {
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return &schema.Resource{
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Create: resourceAwsVolumeAttachmentCreate,
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Read: resourceAwsVolumeAttachmentRead,
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Delete: resourceAwsVolumeAttachmentDelete,
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Schema: map[string]*schema.Schema{
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"device_name": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"instance_id": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"volume_id": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"force_detach": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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Computed: true,
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},
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},
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}
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}
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func resourceAwsVolumeAttachmentCreate(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).ec2conn
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name := d.Get("device_name").(string)
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iID := d.Get("instance_id").(string)
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vID := d.Get("volume_id").(string)
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opts := &ec2.AttachVolumeInput{
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Device: aws.String(name),
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InstanceID: aws.String(iID),
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VolumeID: aws.String(vID),
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}
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2015-05-28 00:07:34 +02:00
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_, err := conn.AttachVolume(opts)
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2015-05-22 23:06:28 +02:00
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if err != nil {
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2015-05-28 00:07:34 +02:00
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if awsErr, ok := err.(awserr.Error); ok {
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return fmt.Errorf("[WARN] Error attaching volume (%s) to instance (%s), message: \"%s\", code: \"%s\"",
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vID, iID, awsErr.Message(), awsErr.Code())
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}
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return err
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2015-05-22 23:06:28 +02:00
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}
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d.SetId(volumeAttachmentID(name, vID, iID))
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return resourceAwsVolumeAttachmentRead(d, meta)
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}
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func resourceAwsVolumeAttachmentRead(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).ec2conn
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request := &ec2.DescribeVolumesInput{
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VolumeIDs: []*string{aws.String(d.Get("volume_id").(string))},
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Filters: []*ec2.Filter{
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&ec2.Filter{
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Name: aws.String("attachment.instance-id"),
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Values: []*string{aws.String(d.Get("instance_id").(string))},
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},
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},
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}
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_, err := conn.DescribeVolumes(request)
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if err != nil {
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if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVolume.NotFound" {
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d.SetId("")
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return nil
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}
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return fmt.Errorf("Error reading EC2 volume %s for instance: %s: %#v", d.Get("volume_id").(string), d.Get("instance_id").(string), err)
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}
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return nil
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}
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func resourceAwsVolumeAttachmentDelete(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).ec2conn
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volume := d.Get("volume_id").(string)
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instance := d.Get("instance_id").(string)
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opts := &ec2.DetachVolumeInput{
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Device: aws.String(d.Get("device_name").(string)),
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InstanceID: aws.String(instance),
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VolumeID: aws.String(volume),
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Force: aws.Boolean(d.Get("force_detach").(bool)),
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}
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2015-05-28 00:07:34 +02:00
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return resource.Retry(3*time.Minute, func() error {
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2015-05-22 23:06:28 +02:00
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resp, err := conn.DetachVolume(opts)
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if err != nil {
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awsErr, ok := err.(awserr.Error)
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if ok && (awsErr.Code() == "IncorrectState" || awsErr.Code() == "InvalidVolume.NotFound") {
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// volume attachment is not in a valid "attachment state"
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return nil
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}
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return err
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}
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if resp.State != nil && *resp.State == "detaching" {
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return fmt.Errorf("waiting for volume %s to detach from instance %s", volume, instance)
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} else if *resp.State == "detached" {
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return nil
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}
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return fmt.Errorf("Error detaching volume %s from instance %s", volume, instance)
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})
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}
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func volumeAttachmentID(name, volumeID, instanceID string) string {
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var buf bytes.Buffer
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buf.WriteString(fmt.Sprintf("%s-", name))
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buf.WriteString(fmt.Sprintf("%s-", instanceID))
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buf.WriteString(fmt.Sprintf("%s-", volumeID))
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return fmt.Sprintf("vai-%d", hashcode.String(buf.String()))
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}
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