344 lines
8.7 KiB
Go
344 lines
8.7 KiB
Go
package google
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import (
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"fmt"
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"log"
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"strings"
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"google.golang.org/api/compute/v1"
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"google.golang.org/api/googleapi"
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"github.com/hashicorp/terraform/helper/schema"
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)
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func resourceComputeInstanceGroup() *schema.Resource {
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return &schema.Resource{
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Create: resourceComputeInstanceGroupCreate,
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Read: resourceComputeInstanceGroupRead,
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Update: resourceComputeInstanceGroupUpdate,
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Delete: resourceComputeInstanceGroupDelete,
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Schema: map[string]*schema.Schema{
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"name": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"zone": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"description": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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},
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"instances": &schema.Schema{
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Type: schema.TypeList,
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Optional: true,
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Elem: &schema.Schema{Type: schema.TypeString},
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},
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"named_port": &schema.Schema{
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Type: schema.TypeList,
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Optional: true,
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Elem: &schema.Resource{
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Schema: map[string]*schema.Schema{
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"name": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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},
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"port": &schema.Schema{
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Type: schema.TypeInt,
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Required: true,
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},
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},
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},
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},
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"network": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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"project": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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},
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"self_link": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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"size": &schema.Schema{
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Type: schema.TypeInt,
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Computed: true,
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},
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},
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}
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}
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func getInstanceReferences(instanceUrls []string) (refs []*compute.InstanceReference) {
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for _, v := range instanceUrls {
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refs = append(refs, &compute.InstanceReference{
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Instance: v,
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})
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}
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return refs
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}
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func validInstanceURLs(instanceUrls []string) bool {
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for _, v := range instanceUrls {
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if !strings.HasPrefix(v, "https://www.googleapis.com/compute/v1/") {
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return false
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}
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}
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return true
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}
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func resourceComputeInstanceGroupCreate(d *schema.ResourceData, meta interface{}) error {
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config := meta.(*Config)
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project, err := getProject(d, config)
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if err != nil {
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return err
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}
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// Build the parameter
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instanceGroup := &compute.InstanceGroup{
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Name: d.Get("name").(string),
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}
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// Set optional fields
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if v, ok := d.GetOk("description"); ok {
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instanceGroup.Description = v.(string)
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}
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if v, ok := d.GetOk("named_port"); ok {
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instanceGroup.NamedPorts = getNamedPorts(v.([]interface{}))
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}
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log.Printf("[DEBUG] InstanceGroup insert request: %#v", instanceGroup)
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op, err := config.clientCompute.InstanceGroups.Insert(
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project, d.Get("zone").(string), instanceGroup).Do()
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if err != nil {
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return fmt.Errorf("Error creating InstanceGroup: %s", err)
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}
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// It probably maybe worked, so store the ID now
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d.SetId(instanceGroup.Name)
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// Wait for the operation to complete
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err = computeOperationWaitZone(config, op, d.Get("zone").(string), "Creating InstanceGroup")
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if err != nil {
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return err
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}
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if v, ok := d.GetOk("instances"); ok {
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instanceUrls := convertStringArr(v.([]interface{}))
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if !validInstanceURLs(instanceUrls) {
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return fmt.Errorf("Error invalid instance URLs: %v", instanceUrls)
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}
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addInstanceReq := &compute.InstanceGroupsAddInstancesRequest{
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Instances: getInstanceReferences(instanceUrls),
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}
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log.Printf("[DEBUG] InstanceGroup add instances request: %#v", addInstanceReq)
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op, err := config.clientCompute.InstanceGroups.AddInstances(
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project, d.Get("zone").(string), d.Id(), addInstanceReq).Do()
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if err != nil {
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return fmt.Errorf("Error adding instances to InstanceGroup: %s", err)
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}
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// Wait for the operation to complete
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err = computeOperationWaitZone(config, op, d.Get("zone").(string), "Adding instances to InstanceGroup")
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if err != nil {
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return err
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}
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}
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return resourceComputeInstanceGroupRead(d, meta)
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}
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func resourceComputeInstanceGroupRead(d *schema.ResourceData, meta interface{}) error {
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config := meta.(*Config)
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project, err := getProject(d, config)
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if err != nil {
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return err
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}
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// retreive instance group
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instanceGroup, err := config.clientCompute.InstanceGroups.Get(
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project, d.Get("zone").(string), d.Id()).Do()
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if err != nil {
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if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 404 {
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// The resource doesn't exist anymore
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d.SetId("")
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return nil
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}
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return fmt.Errorf("Error reading InstanceGroup: %s", err)
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}
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// retreive instance group members
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var memberUrls []string
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members, err := config.clientCompute.InstanceGroups.ListInstances(
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project, d.Get("zone").(string), d.Id(), &compute.InstanceGroupsListInstancesRequest{
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InstanceState: "ALL",
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}).Do()
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if err != nil {
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if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 404 {
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// The resource doesn't have any instances
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d.Set("instances", nil)
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} else {
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// any other errors return them
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return fmt.Errorf("Error reading InstanceGroup Members: %s", err)
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}
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} else {
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for _, member := range members.Items {
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memberUrls = append(memberUrls, member.Instance)
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}
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log.Printf("[DEBUG] InstanceGroup members: %v", memberUrls)
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d.Set("instances", memberUrls)
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}
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// Set computed fields
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d.Set("network", instanceGroup.Network)
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d.Set("size", instanceGroup.Size)
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d.Set("self_link", instanceGroup.SelfLink)
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return nil
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}
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func resourceComputeInstanceGroupUpdate(d *schema.ResourceData, meta interface{}) error {
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config := meta.(*Config)
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project, err := getProject(d, config)
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if err != nil {
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return err
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}
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// refresh the state incase referenced instances have been removed earlier in the run
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err = resourceComputeInstanceGroupRead(d, meta)
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if err != nil {
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return fmt.Errorf("Error reading InstanceGroup: %s", err)
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}
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d.Partial(true)
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if d.HasChange("instances") {
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// to-do check for no instances
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from_, to_ := d.GetChange("instances")
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from := convertStringArr(from_.([]interface{}))
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to := convertStringArr(to_.([]interface{}))
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if !validInstanceURLs(from) {
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return fmt.Errorf("Error invalid instance URLs: %v", from)
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}
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if !validInstanceURLs(to) {
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return fmt.Errorf("Error invalid instance URLs: %v", to)
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}
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add, remove := calcAddRemove(from, to)
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if len(remove) > 0 {
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removeReq := &compute.InstanceGroupsRemoveInstancesRequest{
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Instances: getInstanceReferences(remove),
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}
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log.Printf("[DEBUG] InstanceGroup remove instances request: %#v", removeReq)
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removeOp, err := config.clientCompute.InstanceGroups.RemoveInstances(
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project, d.Get("zone").(string), d.Id(), removeReq).Do()
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if err != nil {
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return fmt.Errorf("Error removing instances from InstanceGroup: %s", err)
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}
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// Wait for the operation to complete
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err = computeOperationWaitZone(config, removeOp, d.Get("zone").(string), "Updating InstanceGroup")
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if err != nil {
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return err
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}
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}
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if len(add) > 0 {
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addReq := &compute.InstanceGroupsAddInstancesRequest{
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Instances: getInstanceReferences(add),
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}
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log.Printf("[DEBUG] InstanceGroup adding instances request: %#v", addReq)
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addOp, err := config.clientCompute.InstanceGroups.AddInstances(
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project, d.Get("zone").(string), d.Id(), addReq).Do()
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if err != nil {
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return fmt.Errorf("Error adding instances from InstanceGroup: %s", err)
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}
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// Wait for the operation to complete
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err = computeOperationWaitZone(config, addOp, d.Get("zone").(string), "Updating InstanceGroup")
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if err != nil {
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return err
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}
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}
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d.SetPartial("instances")
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}
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if d.HasChange("named_port") {
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namedPorts := getNamedPorts(d.Get("named_port").([]interface{}))
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namedPortsReq := &compute.InstanceGroupsSetNamedPortsRequest{
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NamedPorts: namedPorts,
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}
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log.Printf("[DEBUG] InstanceGroup updating named ports request: %#v", namedPortsReq)
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op, err := config.clientCompute.InstanceGroups.SetNamedPorts(
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project, d.Get("zone").(string), d.Id(), namedPortsReq).Do()
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if err != nil {
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return fmt.Errorf("Error updating named ports for InstanceGroup: %s", err)
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}
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err = computeOperationWaitZone(config, op, d.Get("zone").(string), "Updating InstanceGroup")
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if err != nil {
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return err
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}
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d.SetPartial("named_port")
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}
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d.Partial(false)
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return resourceComputeInstanceGroupRead(d, meta)
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}
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func resourceComputeInstanceGroupDelete(d *schema.ResourceData, meta interface{}) error {
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config := meta.(*Config)
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project, err := getProject(d, config)
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if err != nil {
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return err
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}
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zone := d.Get("zone").(string)
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op, err := config.clientCompute.InstanceGroups.Delete(project, zone, d.Id()).Do()
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if err != nil {
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return fmt.Errorf("Error deleting InstanceGroup: %s", err)
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}
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err = computeOperationWaitZone(config, op, zone, "Deleting InstanceGroup")
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if err != nil {
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return err
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}
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d.SetId("")
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return nil
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}
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