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resource_compute_attached_disk.go
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resource_compute_attached_disk.go
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package google
import (
"fmt"
"log"
"strings"
"time"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/helper/validation"
compute "google.golang.org/api/compute/v1"
)
func resourceComputeAttachedDisk() *schema.Resource {
return &schema.Resource{
Create: resourceAttachedDiskCreate,
Read: resourceAttachedDiskRead,
Delete: resourceAttachedDiskDelete,
Importer: &schema.ResourceImporter{
State: resourceAttachedDiskImport,
},
Timeouts: &schema.ResourceTimeout{
Create: schema.DefaultTimeout(300 * time.Second),
Delete: schema.DefaultTimeout(300 * time.Second),
},
Schema: map[string]*schema.Schema{
"disk": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
DiffSuppressFunc: compareSelfLinkOrResourceName,
},
"instance": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
DiffSuppressFunc: compareSelfLinkOrResourceName,
},
"project": {
Type: schema.TypeString,
ForceNew: true,
Computed: true,
Optional: true,
},
"zone": {
Type: schema.TypeString,
ForceNew: true,
Computed: true,
Optional: true,
},
"device_name": {
Type: schema.TypeString,
ForceNew: true,
Optional: true,
Computed: true,
},
"mode": {
Type: schema.TypeString,
ForceNew: true,
Optional: true,
Default: "READ_WRITE",
ValidateFunc: validation.StringInSlice([]string{"READ_ONLY", "READ_WRITE"}, false),
},
},
}
}
func resourceAttachedDiskCreate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
zv, err := parseZonalFieldValue("instances", d.Get("instance").(string), "project", "zone", d, config, false)
if err != nil {
return err
}
diskName := GetResourceNameFromSelfLink(d.Get("disk").(string))
attachedDisk := compute.AttachedDisk{
Source: fmt.Sprintf("projects/%s/zones/%s/disks/%s", zv.Project, zv.Zone, diskName),
Mode: d.Get("mode").(string),
DeviceName: d.Get("device_name").(string),
}
op, err := config.clientCompute.Instances.AttachDisk(zv.Project, zv.Zone, zv.Name, &attachedDisk).Do()
if err != nil {
return err
}
d.SetId(fmt.Sprintf("%s:%s", zv.Name, diskName))
waitErr := computeSharedOperationWaitTime(config.clientCompute, op, zv.Project,
int(d.Timeout(schema.TimeoutCreate).Minutes()), "disk to attach")
if waitErr != nil {
d.SetId("")
return waitErr
}
return resourceAttachedDiskRead(d, meta)
}
func resourceAttachedDiskRead(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
zv, err := parseZonalFieldValue("instances", d.Get("instance").(string), "project", "zone", d, config, false)
if err != nil {
return err
}
d.Set("project", zv.Project)
d.Set("zone", zv.Zone)
diskName := GetResourceNameFromSelfLink(d.Get("disk").(string))
instance, err := config.clientCompute.Instances.Get(zv.Project, zv.Zone, zv.Name).Do()
if err != nil {
return err
}
// Iterate through the instance's attached disks as this is the only way to
// confirm the disk is actually attached
ad := findDiskByName(instance.Disks, diskName)
if ad == nil {
log.Printf("[WARN] Referenced disk wasn't found attached to this compute instance. Removing from state.")
d.SetId("")
return nil
}
d.Set("device_name", ad.DeviceName)
d.Set("mode", ad.Mode)
// Force the referenced resources to a self-link in state because it's more specific then name.
instancePath, err := getRelativePath(instance.SelfLink)
if err != nil {
return err
}
d.Set("instance", instancePath)
diskPath, err := getRelativePath(ad.Source)
if err != nil {
return err
}
d.Set("disk", diskPath)
return nil
}
func resourceAttachedDiskDelete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
zv, err := parseZonalFieldValue("instances", d.Get("instance").(string), "project", "zone", d, config, false)
if err != nil {
return err
}
diskName := GetResourceNameFromSelfLink(d.Get("disk").(string))
instance, err := config.clientCompute.Instances.Get(zv.Project, zv.Zone, zv.Name).Do()
if err != nil {
return err
}
// Confirm the disk is still attached before making the call to detach it. If the disk isn't listed as an attached
// disk on the compute instance then return as though the delete call succeed since this is the desired state.
ad := findDiskByName(instance.Disks, diskName)
if ad == nil {
return nil
}
op, err := config.clientCompute.Instances.DetachDisk(zv.Project, zv.Zone, zv.Name, ad.DeviceName).Do()
if err != nil {
return err
}
waitErr := computeSharedOperationWaitTime(config.clientCompute, op, zv.Project,
int(d.Timeout(schema.TimeoutDelete).Minutes()), fmt.Sprintf("Detaching disk from %s", zv.Name))
if waitErr != nil {
return waitErr
}
return nil
}
func resourceAttachedDiskImport(d *schema.ResourceData, meta interface{}) ([]*schema.ResourceData, error) {
config := meta.(*Config)
err := parseImportId(
[]string{"projects/(?P<project>[^/]+)/zones/(?P<zone>[^/]+)/instances/[^/]+",
"(?P<project>[^/]+)/(?P<zone>[^/]+)/[^/]+"}, d, config)
if err != nil {
return nil, err
}
// In all acceptable id formats the actual id will be the last in the path
id := GetResourceNameFromSelfLink(d.Id())
d.SetId(id)
IDParts := strings.Split(d.Id(), ":")
if len(IDParts) != 2 {
return nil, fmt.Errorf("unable to determine attached disk id - id should be '{google_compute_instance.name}:{google_compute_disk.name}'")
}
d.Set("instance", IDParts[0])
d.Set("disk", IDParts[1])
return []*schema.ResourceData{d}, nil
}
func findDiskByName(disks []*compute.AttachedDisk, id string) *compute.AttachedDisk {
for _, disk := range disks {
if compareSelfLinkOrResourceName("", disk.Source, id, nil) {
return disk
}
}
return nil
}