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resource_openstack_compute_volume_attach_v2.go
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resource_openstack_compute_volume_attach_v2.go
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package openstack
import (
"fmt"
"log"
"strings"
"time"
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/volumeattach"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceComputeVolumeAttachV2() *schema.Resource {
return &schema.Resource{
Create: resourceComputeVolumeAttachV2Create,
Read: resourceComputeVolumeAttachV2Read,
Delete: resourceComputeVolumeAttachV2Delete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"region": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
DefaultFunc: schema.EnvDefaultFunc("OS_REGION_NAME", ""),
},
"instance_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"volume_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"device": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
},
}
}
func resourceComputeVolumeAttachV2Create(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
computeClient, err := config.computeV2Client(d.Get("region").(string))
if err != nil {
return fmt.Errorf("Error creating OpenStack compute client: %s", err)
}
instanceId := d.Get("instance_id").(string)
volumeId := d.Get("volume_id").(string)
var device string
if v, ok := d.GetOk("device"); ok {
device = v.(string)
}
attachOpts := volumeattach.CreateOpts{
Device: device,
VolumeID: volumeId,
}
log.Printf("[DEBUG] Creating volume attachment: %#v", attachOpts)
attachment, err := volumeattach.Create(computeClient, instanceId, attachOpts).Extract()
if err != nil {
return err
}
log.Printf("[DEBUG] Created volume attachment: %#v", attachment)
// Use the instance ID and attachment ID as the resource ID.
// This is because an attachment cannot be retrieved just by its ID alone.
id := fmt.Sprintf("%s/%s", instanceId, attachment.ID)
d.SetId(id)
return resourceComputeVolumeAttachV2Read(d, meta)
}
func resourceComputeVolumeAttachV2Read(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
computeClient, err := config.computeV2Client(d.Get("region").(string))
if err != nil {
return fmt.Errorf("Error creating OpenStack compute client: %s", err)
}
instanceId, attachmentId, err := parseComputeVolumeAttachmentId(d.Id())
if err != nil {
return err
}
attachment, err := volumeattach.Get(computeClient, instanceId, attachmentId).Extract()
if err != nil {
return err
}
log.Printf("[DEBUG] Retrieved volume attachment: %#v", attachment)
d.Set("instance_id", attachment.ServerID)
d.Set("volume_id", attachment.VolumeID)
d.Set("device", attachment.Device)
return nil
}
func resourceComputeVolumeAttachV2Delete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
computeClient, err := config.computeV2Client(d.Get("region").(string))
if err != nil {
return fmt.Errorf("Error creating OpenStack compute client: %s", err)
}
instanceId, attachmentId, err := parseComputeVolumeAttachmentId(d.Id())
if err != nil {
return err
}
stateConf := &resource.StateChangeConf{
Pending: []string{""},
Target: []string{"DETACHED"},
Refresh: volumeDetachRefreshFunc(computeClient, instanceId, attachmentId),
Timeout: 10 * time.Minute,
Delay: 15 * time.Second,
MinTimeout: 15 * time.Second,
}
if _, err = stateConf.WaitForState(); err != nil {
return fmt.Errorf("Error detaching OpenStack volume: %s", err)
}
return nil
}
func volumeDetachRefreshFunc(computeClient *gophercloud.ServiceClient, instanceId, attachmentId string) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
log.Printf("[DEBUG] Attempting to detach OpenStack volume %s from instance %s", attachmentId, instanceId)
va, err := volumeattach.Get(computeClient, instanceId, attachmentId).Extract()
if err != nil {
if _, ok := err.(gophercloud.ErrDefault404); ok {
return va, "DETACHED", nil
}
return va, "", err
}
err = volumeattach.Delete(computeClient, instanceId, attachmentId).ExtractErr()
if err != nil {
if _, ok := err.(gophercloud.ErrDefault404); ok {
return va, "DETACHED", nil
}
if _, ok := err.(gophercloud.ErrDefault400); ok {
return nil, "", nil
}
return nil, "", err
}
log.Printf("[DEBUG] OpenStack Volume Attachment (%s) is still active.", attachmentId)
return nil, "", nil
}
}
func parseComputeVolumeAttachmentId(id string) (string, string, error) {
idParts := strings.Split(id, "/")
if len(idParts) < 2 {
return "", "", fmt.Errorf("Unable to determine volume attachment ID")
}
instanceId := idParts[0]
attachmentId := idParts[1]
return instanceId, attachmentId, nil
}