terraform/builtin/providers/google/resource_compute_instance.go

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package google
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import (
"fmt"
"log"
"time"
"code.google.com/p/google-api-go-client/compute/v1"
"code.google.com/p/google-api-go-client/googleapi"
"github.com/hashicorp/terraform/helper/hashcode"
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"github.com/hashicorp/terraform/helper/schema"
)
func resourceComputeInstance() *schema.Resource {
return &schema.Resource{
Create: resourceComputeInstanceCreate,
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Read: resourceComputeInstanceRead,
Update: resourceComputeInstanceUpdate,
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Delete: resourceComputeInstanceDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"description": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"machine_type": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"zone": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"disk": &schema.Schema{
Type: schema.TypeList,
Required: true,
ForceNew: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
// TODO(mitchellh): one of image or disk is required
"disk": &schema.Schema{
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Type: schema.TypeString,
Optional: true,
},
"image": &schema.Schema{
Type: schema.TypeString,
Optional: true,
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},
"type": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"auto_delete": &schema.Schema{
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Type: schema.TypeBool,
Optional: true,
},
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},
},
},
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"network": &schema.Schema{
Type: schema.TypeList,
Required: true,
ForceNew: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"source": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"address": &schema.Schema{
Type: schema.TypeString,
Optional: true,
},
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"name": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
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"internal_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
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"external_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
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},
},
},
"can_ip_forward": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: false,
ForceNew: true,
},
"metadata": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeMap,
},
},
"service_account": &schema.Schema{
Type: schema.TypeList,
Optional: true,
ForceNew: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"email": &schema.Schema{
Type: schema.TypeString,
Computed: true,
ForceNew: true,
},
"scopes": &schema.Schema{
Type: schema.TypeList,
Required: true,
ForceNew: true,
Elem: &schema.Schema{
Type: schema.TypeString,
StateFunc: func(v interface{}) string {
return canonicalizeServiceScope(v.(string))
},
},
},
},
},
},
"tags": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: func(v interface{}) int {
return hashcode.String(v.(string))
},
},
"metadata_fingerprint": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"tags_fingerprint": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"self_link": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
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},
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}
}
func resourceComputeInstanceCreate(d *schema.ResourceData, meta interface{}) error {
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config := meta.(*Config)
// Get the zone
log.Printf("[DEBUG] Loading zone: %s", d.Get("zone").(string))
zone, err := config.clientCompute.Zones.Get(
config.Project, d.Get("zone").(string)).Do()
if err != nil {
return fmt.Errorf(
"Error loading zone '%s': %s", d.Get("zone").(string), err)
}
// Get the machine type
log.Printf("[DEBUG] Loading machine type: %s", d.Get("machine_type").(string))
machineType, err := config.clientCompute.MachineTypes.Get(
config.Project, zone.Name, d.Get("machine_type").(string)).Do()
if err != nil {
return fmt.Errorf(
"Error loading machine type: %s",
err)
}
// Build up the list of disks
disksCount := d.Get("disk.#").(int)
disks := make([]*compute.AttachedDisk, 0, disksCount)
for i := 0; i < disksCount; i++ {
prefix := fmt.Sprintf("disk.%d", i)
// var sourceLink string
// Build the disk
var disk compute.AttachedDisk
disk.Type = "PERSISTENT"
disk.Mode = "READ_WRITE"
disk.Boot = i == 0
disk.AutoDelete = true
if v, ok := d.GetOk(prefix + ".auto_delete"); ok {
disk.AutoDelete = v.(bool)
}
// Load up the disk for this disk if specified
if v, ok := d.GetOk(prefix + ".disk"); ok {
diskName := v.(string)
diskData, err := config.clientCompute.Disks.Get(
config.Project, zone.Name, diskName).Do()
if err != nil {
return fmt.Errorf(
"Error loading disk '%s': %s",
diskName, err)
}
disk.Source = diskData.SelfLink
}
// Load up the image for this disk if specified
if v, ok := d.GetOk(prefix + ".image"); ok {
imageName := v.(string)
image, err := readImage(config, imageName)
if err != nil {
return fmt.Errorf(
"Error loading image '%s': %s",
imageName, err)
}
disk.InitializeParams = &compute.AttachedDiskInitializeParams{
SourceImage: image.SelfLink,
}
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}
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if v, ok := d.GetOk(prefix + ".type"); ok {
diskTypeName := v.(string)
diskType, err := readDiskType(config, zone, diskTypeName)
if err != nil {
return fmt.Errorf(
"Error loading disk type '%s': %s",
diskTypeName, err)
}
disk.InitializeParams.DiskType = diskType.SelfLink
}
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disks = append(disks, &disk)
}
// Build up the list of networks
networksCount := d.Get("network.#").(int)
networks := make([]*compute.NetworkInterface, 0, networksCount)
for i := 0; i < networksCount; i++ {
prefix := fmt.Sprintf("network.%d", i)
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// Load up the name of this network
networkName := d.Get(prefix + ".source").(string)
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network, err := config.clientCompute.Networks.Get(
config.Project, networkName).Do()
if err != nil {
return fmt.Errorf(
"Error loading network '%s': %s",
networkName, err)
}
// Build the disk
var iface compute.NetworkInterface
iface.AccessConfigs = []*compute.AccessConfig{
&compute.AccessConfig{
Type: "ONE_TO_ONE_NAT",
NatIP: d.Get(prefix + ".address").(string),
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},
}
iface.Network = network.SelfLink
networks = append(networks, &iface)
}
serviceAccountsCount := d.Get("service_account.#").(int)
serviceAccounts := make([]*compute.ServiceAccount, 0, serviceAccountsCount)
for i := 0; i < serviceAccountsCount; i++ {
prefix := fmt.Sprintf("service_account.%d", i)
scopesCount := d.Get(prefix + ".scopes.#").(int)
scopes := make([]string, 0, scopesCount)
for j := 0; j < scopesCount; j++ {
scope := d.Get(fmt.Sprintf(prefix+".scopes.%d", j)).(string)
scopes = append(scopes, canonicalizeServiceScope(scope))
}
serviceAccount := &compute.ServiceAccount{
Email: "default",
Scopes: scopes,
}
serviceAccounts = append(serviceAccounts, serviceAccount)
}
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// Create the instance information
instance := compute.Instance{
CanIpForward: d.Get("can_ip_forward").(bool),
Description: d.Get("description").(string),
Disks: disks,
MachineType: machineType.SelfLink,
Metadata: resourceInstanceMetadata(d),
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Name: d.Get("name").(string),
NetworkInterfaces: networks,
Tags: resourceInstanceTags(d),
ServiceAccounts: serviceAccounts,
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}
log.Printf("[INFO] Requesting instance creation")
op, err := config.clientCompute.Instances.Insert(
config.Project, zone.Name, &instance).Do()
if err != nil {
return fmt.Errorf("Error creating instance: %s", err)
}
// Store the ID now
d.SetId(instance.Name)
// Wait for the operation to complete
w := &OperationWaiter{
Service: config.clientCompute,
Op: op,
Project: config.Project,
Zone: zone.Name,
Type: OperationWaitZone,
}
state := w.Conf()
state.Delay = 10 * time.Second
state.Timeout = 10 * time.Minute
state.MinTimeout = 2 * time.Second
opRaw, err := state.WaitForState()
if err != nil {
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return fmt.Errorf("Error waiting for instance to create: %s", err)
}
op = opRaw.(*compute.Operation)
if op.Error != nil {
// The resource didn't actually create
d.SetId("")
// Return the error
return OperationError(*op.Error)
}
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return resourceComputeInstanceRead(d, meta)
}
func resourceComputeInstanceRead(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
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instance, err := config.clientCompute.Instances.Get(
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config.Project, d.Get("zone").(string), d.Id()).Do()
if err != nil {
if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 404 {
// The resource doesn't exist anymore
d.SetId("")
return nil
}
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return fmt.Errorf("Error reading instance: %s", err)
}
d.Set("can_ip_forward", instance.CanIpForward)
// Set the service accounts
for i, serviceAccount := range instance.ServiceAccounts {
prefix := fmt.Sprintf("service_account.%d", i)
d.Set(prefix+".email", serviceAccount.Email)
d.Set(prefix+".scopes.#", len(serviceAccount.Scopes))
for j, scope := range serviceAccount.Scopes {
d.Set(fmt.Sprintf("%s.scopes.%d", prefix, j), scope)
}
}
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// Set the networks
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externalIP := ""
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for i, iface := range instance.NetworkInterfaces {
prefix := fmt.Sprintf("network.%d", i)
d.Set(prefix+".name", iface.Name)
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// Use the first external IP found for the default connection info.
natIP := resourceInstanceNatIP(iface)
if externalIP == "" && natIP != "" {
externalIP = natIP
}
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d.Set(prefix+".external_address", natIP)
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d.Set(prefix+".internal_address", iface.NetworkIP)
}
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// Initialize the connection info
d.SetConnInfo(map[string]string{
"type": "ssh",
"host": externalIP,
})
// Set the metadata fingerprint if there is one.
if instance.Metadata != nil {
d.Set("metadata_fingerprint", instance.Metadata.Fingerprint)
}
// Set the tags fingerprint if there is one.
if instance.Tags != nil {
d.Set("tags_fingerprint", instance.Tags.Fingerprint)
}
d.Set("self_link", instance.SelfLink)
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return nil
}
func resourceComputeInstanceUpdate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
// Enable partial mode for the resource since it is possible
d.Partial(true)
// If the Metadata has changed, then update that.
if d.HasChange("metadata") {
metadata := resourceInstanceMetadata(d)
op, err := config.clientCompute.Instances.SetMetadata(
config.Project, d.Get("zone").(string), d.Id(), metadata).Do()
if err != nil {
return fmt.Errorf("Error updating metadata: %s", err)
}
w := &OperationWaiter{
Service: config.clientCompute,
Op: op,
Project: config.Project,
Zone: d.Get("zone").(string),
Type: OperationWaitZone,
}
state := w.Conf()
state.Delay = 1 * time.Second
state.Timeout = 5 * time.Minute
state.MinTimeout = 2 * time.Second
opRaw, err := state.WaitForState()
if err != nil {
return fmt.Errorf("Error waiting for metadata to update: %s", err)
}
op = opRaw.(*compute.Operation)
if op.Error != nil {
// Return the error
return OperationError(*op.Error)
}
d.SetPartial("metadata")
}
if d.HasChange("tags") {
tags := resourceInstanceTags(d)
op, err := config.clientCompute.Instances.SetTags(
config.Project, d.Get("zone").(string), d.Id(), tags).Do()
if err != nil {
return fmt.Errorf("Error updating tags: %s", err)
}
w := &OperationWaiter{
Service: config.clientCompute,
Op: op,
Project: config.Project,
Zone: d.Get("zone").(string),
Type: OperationWaitZone,
}
state := w.Conf()
state.Delay = 1 * time.Second
state.Timeout = 5 * time.Minute
state.MinTimeout = 2 * time.Second
opRaw, err := state.WaitForState()
if err != nil {
return fmt.Errorf("Error waiting for tags to update: %s", err)
}
op = opRaw.(*compute.Operation)
if op.Error != nil {
// Return the error
return OperationError(*op.Error)
}
d.SetPartial("tags")
}
// We made it, disable partial mode
d.Partial(false)
return resourceComputeInstanceRead(d, meta)
}
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func resourceComputeInstanceDelete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
op, err := config.clientCompute.Instances.Delete(
config.Project, d.Get("zone").(string), d.Id()).Do()
if err != nil {
return fmt.Errorf("Error deleting instance: %s", err)
}
// Wait for the operation to complete
w := &OperationWaiter{
Service: config.clientCompute,
Op: op,
Project: config.Project,
Zone: d.Get("zone").(string),
Type: OperationWaitZone,
}
state := w.Conf()
state.Delay = 5 * time.Second
state.Timeout = 5 * time.Minute
state.MinTimeout = 2 * time.Second
opRaw, err := state.WaitForState()
if err != nil {
return fmt.Errorf("Error waiting for instance to delete: %s", err)
}
op = opRaw.(*compute.Operation)
if op.Error != nil {
// Return the error
return OperationError(*op.Error)
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}
d.SetId("")
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return nil
}
func resourceInstanceMetadata(d *schema.ResourceData) *compute.Metadata {
var metadata *compute.Metadata
if metadataList := d.Get("metadata").([]interface{}); len(metadataList) > 0 {
m := new(compute.Metadata)
m.Items = make([]*compute.MetadataItems, 0, len(metadataList))
for _, metadataMap := range metadataList {
for key, val := range metadataMap.(map[string]interface{}) {
// TODO: fix https://github.com/hashicorp/terraform/issues/883
// and remove this workaround <3 phinze
if key == "#" {
continue
}
m.Items = append(m.Items, &compute.MetadataItems{
Key: key,
Value: val.(string),
})
}
}
// Set the fingerprint. If the metadata has never been set before
// then this will just be blank.
m.Fingerprint = d.Get("metadata_fingerprint").(string)
metadata = m
}
return metadata
}
func resourceInstanceTags(d *schema.ResourceData) *compute.Tags {
// Calculate the tags
var tags *compute.Tags
if v := d.Get("tags"); v != nil {
vs := v.(*schema.Set)
tags = new(compute.Tags)
tags.Items = make([]string, vs.Len())
for i, v := range vs.List() {
tags.Items[i] = v.(string)
}
tags.Fingerprint = d.Get("tags_fingerprint").(string)
}
return tags
}
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// resourceInstanceNatIP acquires the first NatIP with a "ONE_TO_ONE_NAT" type
// in the compute.NetworkInterface's AccessConfigs.
func resourceInstanceNatIP(iface *compute.NetworkInterface) (natIP string) {
for _, config := range iface.AccessConfigs {
if config.Type == "ONE_TO_ONE_NAT" {
natIP = config.NatIP
break
}
}
return natIP
}