terraform/builtin/providers/digitalocean/resource_digitalocean_dropl...

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package digitalocean
import (
"context"
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"fmt"
"log"
"strconv"
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"strings"
"time"
"github.com/digitalocean/godo"
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"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
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)
func resourceDigitalOceanDroplet() *schema.Resource {
return &schema.Resource{
Create: resourceDigitalOceanDropletCreate,
Read: resourceDigitalOceanDropletRead,
Update: resourceDigitalOceanDropletUpdate,
Delete: resourceDigitalOceanDropletDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"image": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"name": {
Type: schema.TypeString,
Required: true,
},
"region": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
StateFunc: func(val interface{}) string {
// DO API V2 region slug is always lowercase
return strings.ToLower(val.(string))
},
},
"size": {
Type: schema.TypeString,
Required: true,
StateFunc: func(val interface{}) string {
// DO API V2 size slug is always lowercase
return strings.ToLower(val.(string))
},
},
"disk": {
Type: schema.TypeInt,
Computed: true,
},
"vcpus": {
Type: schema.TypeInt,
Computed: true,
},
"price_hourly": {
Type: schema.TypeFloat,
Computed: true,
},
"price_monthly": {
Type: schema.TypeFloat,
Computed: true,
},
"resize_disk": {
Type: schema.TypeBool,
Optional: true,
Default: true,
},
"status": {
Type: schema.TypeString,
Computed: true,
},
"locked": {
Type: schema.TypeString,
Computed: true,
},
"backups": {
Type: schema.TypeBool,
Optional: true,
},
"ipv6": {
Type: schema.TypeBool,
Optional: true,
},
"ipv6_address": {
Type: schema.TypeString,
Computed: true,
StateFunc: func(val interface{}) string {
return strings.ToLower(val.(string))
},
},
"ipv6_address_private": {
Type: schema.TypeString,
Computed: true,
},
"private_networking": {
Type: schema.TypeBool,
Optional: true,
},
"ipv4_address": {
Type: schema.TypeString,
Computed: true,
},
"ipv4_address_private": {
Type: schema.TypeString,
Computed: true,
},
"ssh_keys": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"tags": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"user_data": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"volume_ids": {
Type: schema.TypeList,
Elem: &schema.Schema{Type: schema.TypeString},
Optional: true,
},
},
}
}
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func resourceDigitalOceanDropletCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*godo.Client)
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// Build up our creation options
opts := &godo.DropletCreateRequest{
Image: godo.DropletCreateImage{
Slug: d.Get("image").(string),
},
Name: d.Get("name").(string),
Region: d.Get("region").(string),
Size: d.Get("size").(string),
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}
if attr, ok := d.GetOk("backups"); ok {
opts.Backups = attr.(bool)
}
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if attr, ok := d.GetOk("ipv6"); ok {
opts.IPv6 = attr.(bool)
}
if attr, ok := d.GetOk("private_networking"); ok {
opts.PrivateNetworking = attr.(bool)
}
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if attr, ok := d.GetOk("user_data"); ok {
opts.UserData = attr.(string)
}
if attr, ok := d.GetOk("volume_ids"); ok {
for _, id := range attr.([]interface{}) {
opts.Volumes = append(opts.Volumes, godo.DropletCreateVolume{
ID: id.(string),
})
}
}
// Get configured ssh_keys
sshKeys := d.Get("ssh_keys.#").(int)
if sshKeys > 0 {
opts.SSHKeys = make([]godo.DropletCreateSSHKey, 0, sshKeys)
for i := 0; i < sshKeys; i++ {
key := fmt.Sprintf("ssh_keys.%d", i)
sshKeyRef := d.Get(key).(string)
var sshKey godo.DropletCreateSSHKey
// sshKeyRef can be either an ID or a fingerprint
if id, err := strconv.Atoi(sshKeyRef); err == nil {
sshKey.ID = id
} else {
sshKey.Fingerprint = sshKeyRef
}
opts.SSHKeys = append(opts.SSHKeys, sshKey)
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}
}
log.Printf("[DEBUG] Droplet create configuration: %#v", opts)
droplet, _, err := client.Droplets.Create(context.Background(), opts)
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if err != nil {
return fmt.Errorf("Error creating droplet: %s", err)
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}
// Assign the droplets id
d.SetId(strconv.Itoa(droplet.ID))
log.Printf("[INFO] Droplet ID: %s", d.Id())
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_, err = WaitForDropletAttribute(d, "active", []string{"new"}, "status", meta)
if err != nil {
return fmt.Errorf(
"Error waiting for droplet (%s) to become ready: %s", d.Id(), err)
}
// droplet needs to be active in order to set tags
err = setTags(client, d)
if err != nil {
return fmt.Errorf("Error setting tags: %s", err)
}
return resourceDigitalOceanDropletRead(d, meta)
}
func resourceDigitalOceanDropletRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*godo.Client)
id, err := strconv.Atoi(d.Id())
if err != nil {
return fmt.Errorf("invalid droplet id: %v", err)
}
// Retrieve the droplet properties for updating the state
droplet, resp, err := client.Droplets.Get(context.Background(), id)
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if err != nil {
// check if the droplet no longer exists.
if resp != nil && resp.StatusCode == 404 {
log.Printf("[WARN] DigitalOcean Droplet (%s) not found", d.Id())
d.SetId("")
return nil
}
return fmt.Errorf("Error retrieving droplet: %s", err)
}
_, err = strconv.Atoi(d.Get("image").(string))
if err == nil || droplet.Image.Slug == "" {
// The image field is provided as an ID (number), or
// the image bash no slug. In both cases we store it as an ID.
d.Set("image", droplet.Image.ID)
} else {
d.Set("image", droplet.Image.Slug)
}
d.Set("name", droplet.Name)
d.Set("region", droplet.Region.Slug)
d.Set("size", droplet.Size.Slug)
d.Set("price_hourly", droplet.Size.PriceHourly)
d.Set("price_monthly", droplet.Size.PriceMonthly)
d.Set("disk", droplet.Disk)
d.Set("vcpus", droplet.Vcpus)
d.Set("status", droplet.Status)
d.Set("locked", strconv.FormatBool(droplet.Locked))
if len(droplet.VolumeIDs) > 0 {
vlms := make([]interface{}, 0, len(droplet.VolumeIDs))
for _, vid := range droplet.VolumeIDs {
vlms = append(vlms, vid)
}
d.Set("volume_ids", vlms)
}
if publicIPv6 := findIPv6AddrByType(droplet, "public"); publicIPv6 != "" {
d.Set("ipv6", true)
d.Set("ipv6_address", strings.ToLower(publicIPv6))
d.Set("ipv6_address_private", findIPv6AddrByType(droplet, "private"))
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}
d.Set("ipv4_address", findIPv4AddrByType(droplet, "public"))
if privateIPv4 := findIPv4AddrByType(droplet, "private"); privateIPv4 != "" {
d.Set("private_networking", true)
d.Set("ipv4_address_private", privateIPv4)
}
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// Initialize the connection info
d.SetConnInfo(map[string]string{
"type": "ssh",
"host": findIPv4AddrByType(droplet, "public"),
})
d.Set("tags", droplet.Tags)
return nil
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}
func findIPv6AddrByType(d *godo.Droplet, addrType string) string {
for _, addr := range d.Networks.V6 {
if addr.Type == addrType {
return addr.IPAddress
}
}
return ""
}
func findIPv4AddrByType(d *godo.Droplet, addrType string) string {
for _, addr := range d.Networks.V4 {
if addr.Type == addrType {
return addr.IPAddress
}
}
return ""
}
func resourceDigitalOceanDropletUpdate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*godo.Client)
id, err := strconv.Atoi(d.Id())
if err != nil {
return fmt.Errorf("invalid droplet id: %v", err)
}
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resize_disk := d.Get("resize_disk").(bool)
if d.HasChange("size") || d.HasChange("resize_disk") && resize_disk {
newSize := d.Get("size")
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_, _, err = client.DropletActions.PowerOff(context.Background(), id)
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if err != nil && !strings.Contains(err.Error(), "Droplet is already powered off") {
return fmt.Errorf(
"Error powering off droplet (%s): %s", d.Id(), err)
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}
// Wait for power off
_, err = WaitForDropletAttribute(d, "off", []string{"active"}, "status", client)
if err != nil {
return fmt.Errorf(
"Error waiting for droplet (%s) to become powered off: %s", d.Id(), err)
}
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// Resize the droplet
action, _, err := client.DropletActions.Resize(context.Background(), id, newSize.(string), resize_disk)
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if err != nil {
newErr := powerOnAndWait(d, meta)
if newErr != nil {
return fmt.Errorf(
"Error powering on droplet (%s) after failed resize: %s", d.Id(), err)
}
return fmt.Errorf(
"Error resizing droplet (%s): %s", d.Id(), err)
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}
// Wait for the resize action to complete.
if err := waitForAction(client, action); err != nil {
newErr := powerOnAndWait(d, meta)
if newErr != nil {
return fmt.Errorf(
"Error powering on droplet (%s) after waiting for resize to finish: %s", d.Id(), err)
}
return fmt.Errorf(
"Error waiting for resize droplet (%s) to finish: %s", d.Id(), err)
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}
_, _, err = client.DropletActions.PowerOn(context.Background(), id)
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if err != nil {
return fmt.Errorf(
"Error powering on droplet (%s) after resize: %s", d.Id(), err)
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}
// Wait for power off
_, err = WaitForDropletAttribute(d, "active", []string{"off"}, "status", meta)
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if err != nil {
return err
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}
}
if d.HasChange("name") {
oldName, newName := d.GetChange("name")
// Rename the droplet
_, _, err = client.DropletActions.Rename(context.Background(), id, newName.(string))
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if err != nil {
return fmt.Errorf(
"Error renaming droplet (%s): %s", d.Id(), err)
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}
// Wait for the name to change
_, err = WaitForDropletAttribute(
d, newName.(string), []string{"", oldName.(string)}, "name", meta)
if err != nil {
return fmt.Errorf(
"Error waiting for rename droplet (%s) to finish: %s", d.Id(), err)
}
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}
// As there is no way to disable private networking,
// we only check if it needs to be enabled
if d.HasChange("private_networking") && d.Get("private_networking").(bool) {
_, _, err = client.DropletActions.EnablePrivateNetworking(context.Background(), id)
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if err != nil {
return fmt.Errorf(
"Error enabling private networking for droplet (%s): %s", d.Id(), err)
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}
// Wait for the private_networking to turn on
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_, err = WaitForDropletAttribute(
d, "true", []string{"", "false"}, "private_networking", meta)
return fmt.Errorf(
"Error waiting for private networking to be enabled on for droplet (%s): %s", d.Id(), err)
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}
// As there is no way to disable IPv6, we only check if it needs to be enabled
if d.HasChange("ipv6") && d.Get("ipv6").(bool) {
_, _, err = client.DropletActions.EnableIPv6(context.Background(), id)
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if err != nil {
return fmt.Errorf(
"Error turning on ipv6 for droplet (%s): %s", d.Id(), err)
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}
// Wait for ipv6 to turn on
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_, err = WaitForDropletAttribute(
d, "true", []string{"", "false"}, "ipv6", meta)
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if err != nil {
return fmt.Errorf(
"Error waiting for ipv6 to be turned on for droplet (%s): %s", d.Id(), err)
}
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}
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if d.HasChange("tags") {
err = setTags(client, d)
if err != nil {
return fmt.Errorf("Error updating tags: %s", err)
}
}
if d.HasChange("volume_ids") {
oldIDs, newIDs := d.GetChange("volume_ids")
newSet := func(ids []interface{}) map[string]struct{} {
out := make(map[string]struct{}, len(ids))
for _, id := range ids {
out[id.(string)] = struct{}{}
}
return out
}
// leftDiff returns all elements in Left that are not in Right
leftDiff := func(left, right map[string]struct{}) map[string]struct{} {
out := make(map[string]struct{})
for l := range left {
if _, ok := right[l]; !ok {
out[l] = struct{}{}
}
}
return out
}
oldIDSet := newSet(oldIDs.([]interface{}))
newIDSet := newSet(newIDs.([]interface{}))
for volumeID := range leftDiff(newIDSet, oldIDSet) {
action, _, err := client.StorageActions.Attach(context.Background(), volumeID, id)
if err != nil {
return fmt.Errorf("Error attaching volume %q to droplet (%s): %s", volumeID, d.Id(), err)
}
// can't fire >1 action at a time, so waiting for each is OK
if err := waitForAction(client, action); err != nil {
return fmt.Errorf("Error waiting for volume %q to attach to droplet (%s): %s", volumeID, d.Id(), err)
}
}
for volumeID := range leftDiff(oldIDSet, newIDSet) {
action, _, err := client.StorageActions.DetachByDropletID(context.Background(), volumeID, id)
if err != nil {
return fmt.Errorf("Error detaching volume %q from droplet (%s): %s", volumeID, d.Id(), err)
}
// can't fire >1 action at a time, so waiting for each is OK
if err := waitForAction(client, action); err != nil {
return fmt.Errorf("Error waiting for volume %q to detach from droplet (%s): %s", volumeID, d.Id(), err)
}
}
}
return resourceDigitalOceanDropletRead(d, meta)
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}
func resourceDigitalOceanDropletDelete(d *schema.ResourceData, meta interface{}) error {
client := meta.(*godo.Client)
id, err := strconv.Atoi(d.Id())
if err != nil {
return fmt.Errorf("invalid droplet id: %v", err)
}
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_, err = WaitForDropletAttribute(
d, "false", []string{"", "true"}, "locked", meta)
if err != nil {
return fmt.Errorf(
"Error waiting for droplet to be unlocked for destroy (%s): %s", d.Id(), err)
}
log.Printf("[INFO] Deleting droplet: %s", d.Id())
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// Destroy the droplet
_, err = client.Droplets.Delete(context.Background(), id)
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// Handle remotely destroyed droplets
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if err != nil && strings.Contains(err.Error(), "404 Not Found") {
return nil
}
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if err != nil {
return fmt.Errorf("Error deleting droplet: %s", err)
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}
return nil
}
func WaitForDropletAttribute(
d *schema.ResourceData, target string, pending []string, attribute string, meta interface{}) (interface{}, error) {
// Wait for the droplet so we can get the networking attributes
// that show up after a while
log.Printf(
"[INFO] Waiting for droplet (%s) to have %s of %s",
d.Id(), attribute, target)
stateConf := &resource.StateChangeConf{
Pending: pending,
Target: []string{target},
Refresh: newDropletStateRefreshFunc(d, attribute, meta),
Timeout: 60 * time.Minute,
Delay: 10 * time.Second,
MinTimeout: 3 * time.Second,
// This is a hack around DO API strangeness.
// https://github.com/hashicorp/terraform/issues/481
//
NotFoundChecks: 60,
}
return stateConf.WaitForState()
}
// TODO This function still needs a little more refactoring to make it
// cleaner and more efficient
func newDropletStateRefreshFunc(
d *schema.ResourceData, attribute string, meta interface{}) resource.StateRefreshFunc {
client := meta.(*godo.Client)
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return func() (interface{}, string, error) {
id, err := strconv.Atoi(d.Id())
if err != nil {
return nil, "", err
}
err = resourceDigitalOceanDropletRead(d, meta)
if err != nil {
return nil, "", err
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}
// If the droplet is locked, continue waiting. We can
// only perform actions on unlocked droplets, so it's
// pointless to look at that status
if d.Get("locked").(string) == "true" {
log.Println("[DEBUG] Droplet is locked, skipping status check and retrying")
return nil, "", nil
}
// See if we can access our attribute
if attr, ok := d.GetOk(attribute); ok {
// Retrieve the droplet properties
droplet, _, err := client.Droplets.Get(context.Background(), id)
if err != nil {
return nil, "", fmt.Errorf("Error retrieving droplet: %s", err)
}
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return &droplet, attr.(string), nil
}
return nil, "", nil
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}
}
// Powers on the droplet and waits for it to be active
func powerOnAndWait(d *schema.ResourceData, meta interface{}) error {
id, err := strconv.Atoi(d.Id())
if err != nil {
return fmt.Errorf("invalid droplet id: %v", err)
}
client := meta.(*godo.Client)
_, _, err = client.DropletActions.PowerOn(context.Background(), id)
if err != nil {
return err
}
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// Wait for power on
_, err = WaitForDropletAttribute(d, "active", []string{"off"}, "status", client)
if err != nil {
return err
}
return nil
}