package azure import ( "fmt" "log" "time" "github.com/hashicorp/terraform/helper/schema" "github.com/svanharmelen/azure-sdk-for-go/management" "github.com/svanharmelen/azure-sdk-for-go/management/virtualmachinedisk" ) const dataDiskBlobStorageURL = "http://%s.blob.core.windows.net/disks/%s.vhd" func resourceAzureDataDisk() *schema.Resource { return &schema.Resource{ Create: resourceAzureDataDiskCreate, Read: resourceAzureDataDiskRead, Update: resourceAzureDataDiskUpdate, Delete: resourceAzureDataDiskDelete, Schema: map[string]*schema.Schema{ "name": &schema.Schema{ Type: schema.TypeString, Optional: true, Computed: true, ForceNew: true, }, "label": &schema.Schema{ Type: schema.TypeString, Optional: true, Computed: true, ForceNew: true, }, "lun": &schema.Schema{ Type: schema.TypeInt, Required: true, }, "size": &schema.Schema{ Type: schema.TypeInt, Optional: true, }, "caching": &schema.Schema{ Type: schema.TypeString, Optional: true, Default: "None", }, "storage": &schema.Schema{ Type: schema.TypeString, Optional: true, ForceNew: true, }, "media_link": &schema.Schema{ Type: schema.TypeString, Optional: true, Computed: true, ForceNew: true, }, "source_media_link": &schema.Schema{ Type: schema.TypeString, Optional: true, ForceNew: true, }, "virtual_machine": &schema.Schema{ Type: schema.TypeString, Required: true, }, }, } } func resourceAzureDataDiskCreate(d *schema.ResourceData, meta interface{}) error { mc := meta.(*Client).mgmtClient if err := verifyDataDiskParameters(d); err != nil { return err } lun := d.Get("lun").(int) vm := d.Get("virtual_machine").(string) label := d.Get("label").(string) if label == "" { label = fmt.Sprintf("%s-%d", vm, lun) } p := virtualmachinedisk.CreateDataDiskParameters{ DiskLabel: label, Lun: lun, LogicalDiskSizeInGB: d.Get("size").(int), HostCaching: hostCaching(d), MediaLink: mediaLink(d), SourceMediaLink: d.Get("source_media_link").(string), } if name, ok := d.GetOk("name"); ok { p.DiskName = name.(string) } log.Printf("[DEBUG] Adding data disk %d to instance: %s", lun, vm) req, err := virtualmachinedisk.NewClient(mc).AddDataDisk(vm, vm, vm, p) if err != nil { return fmt.Errorf("Error adding data disk %d to instance %s: %s", lun, vm, err) } // Wait until the data disk is added if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for data disk %d to be added to instance %s: %s", lun, vm, err) } log.Printf("[DEBUG] Retrieving data disk %d from instance %s", lun, vm) disk, err := virtualmachinedisk.NewClient(mc).GetDataDisk(vm, vm, vm, lun) if err != nil { return fmt.Errorf("Error retrieving data disk %d from instance %s: %s", lun, vm, err) } d.SetId(disk.DiskName) return resourceAzureDataDiskRead(d, meta) } func resourceAzureDataDiskRead(d *schema.ResourceData, meta interface{}) error { mc := meta.(*Client).mgmtClient lun := d.Get("lun").(int) vm := d.Get("virtual_machine").(string) log.Printf("[DEBUG] Retrieving data disk: %s", d.Id()) datadisk, err := virtualmachinedisk.NewClient(mc).GetDataDisk(vm, vm, vm, lun) if err != nil { if management.IsResourceNotFoundError(err) { d.SetId("") return nil } return fmt.Errorf("Error retrieving data disk %s: %s", d.Id(), err) } d.Set("name", datadisk.DiskName) d.Set("label", datadisk.DiskLabel) d.Set("lun", datadisk.Lun) d.Set("size", datadisk.LogicalDiskSizeInGB) d.Set("caching", datadisk.HostCaching) d.Set("media_link", datadisk.MediaLink) log.Printf("[DEBUG] Retrieving disk: %s", d.Id()) disk, err := virtualmachinedisk.NewClient(mc).GetDisk(d.Id()) if err != nil { return fmt.Errorf("Error retrieving disk %s: %s", d.Id(), err) } d.Set("virtual_machine", disk.AttachedTo.RoleName) return nil } func resourceAzureDataDiskUpdate(d *schema.ResourceData, meta interface{}) error { mc := meta.(*Client).mgmtClient diskClient := virtualmachinedisk.NewClient(mc) lun := d.Get("lun").(int) vm := d.Get("virtual_machine").(string) if d.HasChange("lun") || d.HasChange("size") || d.HasChange("virtual_machine") { olun, _ := d.GetChange("lun") ovm, _ := d.GetChange("virtual_machine") log.Printf("[DEBUG] Detaching data disk: %s", d.Id()) req, err := diskClient. DeleteDataDisk(ovm.(string), ovm.(string), ovm.(string), olun.(int), false) if err != nil { return fmt.Errorf("Error detaching data disk %s: %s", d.Id(), err) } // Wait until the data disk is detached if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for data disk %s to be detached: %s", d.Id(), err) } log.Printf("[DEBUG] Verifying data disk %s is properly detached...", d.Id()) for i := 0; i < 6; i++ { disk, err := diskClient.GetDisk(d.Id()) if err != nil { return fmt.Errorf("Error retrieving disk %s: %s", d.Id(), err) } // Check if the disk is really detached if disk.AttachedTo.RoleName == "" { break } // If not, wait 30 seconds and try it again... time.Sleep(time.Duration(30 * time.Second)) } if d.HasChange("size") { p := virtualmachinedisk.UpdateDiskParameters{ Name: d.Id(), Label: d.Get("label").(string), ResizedSizeInGB: d.Get("size").(int), } log.Printf("[DEBUG] Updating disk: %s", d.Id()) req, err := diskClient.UpdateDisk(d.Id(), p) if err != nil { return fmt.Errorf("Error updating disk %s: %s", d.Id(), err) } // Wait until the disk is updated if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for disk %s to be updated: %s", d.Id(), err) } } p := virtualmachinedisk.CreateDataDiskParameters{ DiskName: d.Id(), Lun: lun, HostCaching: hostCaching(d), MediaLink: mediaLink(d), } log.Printf("[DEBUG] Attaching data disk: %s", d.Id()) req, err = diskClient.AddDataDisk(vm, vm, vm, p) if err != nil { return fmt.Errorf("Error attaching data disk %s to instance %s: %s", d.Id(), vm, err) } // Wait until the data disk is attached if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for data disk %s to be attached to instance %s: %s", d.Id(), vm, err) } // Make sure we return here since all possible changes are // already updated if we reach this point return nil } if d.HasChange("caching") { p := virtualmachinedisk.UpdateDataDiskParameters{ DiskName: d.Id(), Lun: lun, HostCaching: hostCaching(d), MediaLink: mediaLink(d), } log.Printf("[DEBUG] Updating data disk: %s", d.Id()) req, err := diskClient.UpdateDataDisk(vm, vm, vm, lun, p) if err != nil { return fmt.Errorf("Error updating data disk %s: %s", d.Id(), err) } // Wait until the data disk is updated if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for data disk %s to be updated: %s", d.Id(), err) } } return resourceAzureDataDiskRead(d, meta) } func resourceAzureDataDiskDelete(d *schema.ResourceData, meta interface{}) error { mc := meta.(*Client).mgmtClient lun := d.Get("lun").(int) vm := d.Get("virtual_machine").(string) // If a name was not supplied, it means we created a new emtpy disk and we now want to // delete that disk again. Otherwise we only want to detach the disk and keep the blob. _, removeBlob := d.GetOk("name") log.Printf("[DEBUG] Detaching data disk %s with removeBlob = %t", d.Id(), removeBlob) req, err := virtualmachinedisk.NewClient(mc).DeleteDataDisk(vm, vm, vm, lun, removeBlob) if err != nil { return fmt.Errorf( "Error detaching data disk %s with removeBlob = %t: %s", d.Id(), removeBlob, err) } // Wait until the data disk is detached and optionally deleted if err := mc.WaitForOperation(req, nil); err != nil { return fmt.Errorf( "Error waiting for data disk %s to be detached with removeBlob = %t: %s", d.Id(), removeBlob, err) } d.SetId("") return nil } func hostCaching(d *schema.ResourceData) virtualmachinedisk.HostCachingType { switch d.Get("caching").(string) { case "ReadOnly": return virtualmachinedisk.HostCachingTypeReadOnly case "ReadWrite": return virtualmachinedisk.HostCachingTypeReadWrite default: return virtualmachinedisk.HostCachingTypeNone } } func mediaLink(d *schema.ResourceData) string { mediaLink, ok := d.GetOk("media_link") if ok { return mediaLink.(string) } name, ok := d.GetOk("name") if !ok { name = fmt.Sprintf("%s-%d", d.Get("virtual_machine").(string), d.Get("lun").(int)) } return fmt.Sprintf(dataDiskBlobStorageURL, d.Get("storage").(string), name.(string)) } func verifyDataDiskParameters(d *schema.ResourceData) error { caching := d.Get("caching").(string) if caching != "None" && caching != "ReadOnly" && caching != "ReadWrite" { return fmt.Errorf( "Invalid caching type %s! Valid options are 'None', 'ReadOnly' and 'ReadWrite'.", caching) } if _, ok := d.GetOk("media_link"); !ok { if _, ok := d.GetOk("storage"); !ok { return fmt.Errorf("If not supplying 'media_link', you must supply 'storage'.") } } return nil }