mirror of
https://github.com/letic/terraform-provider-google.git
synced 2024-06-29 06:42:36 +00:00
337 lines
8.6 KiB
Go
337 lines
8.6 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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"github.com/hashicorp/terraform/helper/schema"
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"google.golang.org/api/dns/v1"
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"net"
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)
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func resourceDnsRecordSet() *schema.Resource {
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return &schema.Resource{
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Create: resourceDnsRecordSetCreate,
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Read: resourceDnsRecordSetRead,
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Delete: resourceDnsRecordSetDelete,
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Update: resourceDnsRecordSetUpdate,
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Importer: &schema.ResourceImporter{
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State: resourceDnsRecordSetImportState,
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},
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Schema: map[string]*schema.Schema{
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"managed_zone": {
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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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"name": {
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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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"rrdatas": {
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Type: schema.TypeList,
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Required: true,
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Elem: &schema.Schema{
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Type: schema.TypeString,
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DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
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if d.Get("type") == "AAAA" {
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return ipv6AddressDiffSuppress(k, old, new, d)
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}
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return false
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},
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},
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DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
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return strings.ToLower(strings.Trim(old, `"`)) == strings.ToLower(strings.Trim(new, `"`))
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},
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},
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"ttl": {
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Type: schema.TypeInt,
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Required: true,
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},
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"type": {
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Type: schema.TypeString,
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Required: true,
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},
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"project": {
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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ForceNew: true,
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},
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},
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}
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}
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func resourceDnsRecordSetCreate(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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name := d.Get("name").(string)
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zone := d.Get("managed_zone").(string)
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rType := d.Get("type").(string)
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// Build the change
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chg := &dns.Change{
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Additions: []*dns.ResourceRecordSet{
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{
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Name: name,
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Type: rType,
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Ttl: int64(d.Get("ttl").(int)),
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Rrdatas: rrdata(d),
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},
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},
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}
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// we need to replace NS record sets in the same call. That means
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// we need to list all the current NS record sets attached to the
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// zone and add them to the change as deletions. We can't just add
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// new NS record sets, or we'll get an error about the NS record set
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// already existing; see terraform-providers/terraform-provider-google#95.
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// We also can't just remove the NS recordsets on creation, as at
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// least one is required. So the solution is to "update in place" by
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// putting the addition and the removal in the same API call.
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if rType == "NS" {
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log.Printf("[DEBUG] DNS record list request for %q", zone)
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res, err := config.clientDns.ResourceRecordSets.List(project, zone).Do()
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if err != nil {
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return fmt.Errorf("Error retrieving record sets for %q: %s", zone, err)
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}
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var deletions []*dns.ResourceRecordSet
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for _, record := range res.Rrsets {
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if record.Type != "NS" || record.Name != name {
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continue
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}
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deletions = append(deletions, record)
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}
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if len(deletions) > 0 {
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chg.Deletions = deletions
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}
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}
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log.Printf("[DEBUG] DNS Record create request: %#v", chg)
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chg, err = config.clientDns.Changes.Create(project, zone, chg).Do()
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if err != nil {
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return fmt.Errorf("Error creating DNS RecordSet: %s", err)
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}
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d.SetId(fmt.Sprintf("%s/%s/%s", zone, name, rType))
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w := &DnsChangeWaiter{
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Service: config.clientDns,
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Change: chg,
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Project: project,
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ManagedZone: zone,
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}
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_, err = w.Conf().WaitForState()
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if err != nil {
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return fmt.Errorf("Error waiting for Google DNS change: %s", err)
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}
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return resourceDnsRecordSetRead(d, meta)
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}
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func resourceDnsRecordSetRead(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("managed_zone").(string)
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// name and type are effectively the 'key'
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name := d.Get("name").(string)
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dnsType := d.Get("type").(string)
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resp, err := config.clientDns.ResourceRecordSets.List(
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project, zone).Name(name).Type(dnsType).Do()
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if err != nil {
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return handleNotFoundError(err, d, fmt.Sprintf("DNS Record Set %q", d.Get("name").(string)))
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}
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if len(resp.Rrsets) == 0 {
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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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if len(resp.Rrsets) > 1 {
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return fmt.Errorf("Only expected 1 record set, got %d", len(resp.Rrsets))
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}
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d.Set("type", resp.Rrsets[0].Type)
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d.Set("ttl", resp.Rrsets[0].Ttl)
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d.Set("rrdatas", resp.Rrsets[0].Rrdatas)
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d.Set("project", project)
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return nil
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}
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func resourceDnsRecordSetDelete(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("managed_zone").(string)
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// NS records must always have a value, so we short-circuit delete
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// this allows terraform delete to work, but may have unexpected
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// side-effects when deleting just that record set.
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// Unfortunately, you can set NS records on subdomains, and those
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// CAN and MUST be deleted, so we need to retrieve the managed zone,
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// check if what we're looking at is a subdomain, and only not delete
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// if it's not actually a subdomain
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if d.Get("type").(string) == "NS" {
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mz, err := config.clientDns.ManagedZones.Get(project, zone).Do()
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if err != nil {
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return fmt.Errorf("Error retrieving managed zone %q from %q: %s", zone, project, err)
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}
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domain := mz.DnsName
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if domain == d.Get("name").(string) {
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log.Println("[DEBUG] NS records can't be deleted due to API restrictions, so they're being left in place. See https://www.terraform.io/docs/providers/google/r/dns_record_set.html for more information.")
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return nil
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}
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}
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// Build the change
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chg := &dns.Change{
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Deletions: []*dns.ResourceRecordSet{
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{
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Name: d.Get("name").(string),
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Type: d.Get("type").(string),
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Ttl: int64(d.Get("ttl").(int)),
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Rrdatas: rrdata(d),
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},
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},
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}
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log.Printf("[DEBUG] DNS Record delete request: %#v", chg)
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chg, err = config.clientDns.Changes.Create(project, zone, chg).Do()
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if err != nil {
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return fmt.Errorf("Error deleting DNS RecordSet: %s", err)
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}
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w := &DnsChangeWaiter{
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Service: config.clientDns,
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Change: chg,
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Project: project,
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ManagedZone: zone,
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}
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_, err = w.Conf().WaitForState()
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if err != nil {
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return fmt.Errorf("Error waiting for Google DNS change: %s", 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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func resourceDnsRecordSetUpdate(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("managed_zone").(string)
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recordName := d.Get("name").(string)
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oldTtl, newTtl := d.GetChange("ttl")
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oldType, newType := d.GetChange("type")
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oldCountRaw, _ := d.GetChange("rrdatas.#")
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oldCount := oldCountRaw.(int)
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chg := &dns.Change{
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Deletions: []*dns.ResourceRecordSet{
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{
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Name: recordName,
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Type: oldType.(string),
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Ttl: int64(oldTtl.(int)),
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Rrdatas: make([]string, oldCount),
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},
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},
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Additions: []*dns.ResourceRecordSet{
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{
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Name: recordName,
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Type: newType.(string),
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Ttl: int64(newTtl.(int)),
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Rrdatas: rrdata(d),
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},
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},
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}
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for i := 0; i < oldCount; i++ {
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rrKey := fmt.Sprintf("rrdatas.%d", i)
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oldRR, _ := d.GetChange(rrKey)
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chg.Deletions[0].Rrdatas[i] = oldRR.(string)
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}
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log.Printf("[DEBUG] DNS Record change request: %#v old: %#v new: %#v", chg, chg.Deletions[0], chg.Additions[0])
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chg, err = config.clientDns.Changes.Create(project, zone, chg).Do()
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if err != nil {
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return fmt.Errorf("Error changing DNS RecordSet: %s", err)
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}
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w := &DnsChangeWaiter{
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Service: config.clientDns,
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Change: chg,
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Project: project,
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ManagedZone: zone,
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}
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if _, err = w.Conf().WaitForState(); err != nil {
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return fmt.Errorf("Error waiting for Google DNS change: %s", err)
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}
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return resourceDnsRecordSetRead(d, meta)
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}
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func resourceDnsRecordSetImportState(d *schema.ResourceData, _ interface{}) ([]*schema.ResourceData, error) {
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parts := strings.Split(d.Id(), "/")
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if len(parts) != 3 {
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return nil, fmt.Errorf("Invalid dns record specifier. Expecting {zone-name}/{record-name}/{record-type}. The record name must include a trailing '.' at the end.")
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}
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d.Set("managed_zone", parts[0])
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d.Set("name", parts[1])
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d.Set("type", parts[2])
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return []*schema.ResourceData{d}, nil
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}
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func rrdata(
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d *schema.ResourceData,
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) []string {
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rrdatasCount := d.Get("rrdatas.#").(int)
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data := make([]string, rrdatasCount)
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for i := 0; i < rrdatasCount; i++ {
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data[i] = d.Get(fmt.Sprintf("rrdatas.%d", i)).(string)
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}
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return data
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}
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func ipv6AddressDiffSuppress(_, old, new string, _ *schema.ResourceData) bool {
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oldIp := net.ParseIP(old)
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newIp := net.ParseIP(new)
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return oldIp.Equal(newIp)
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}
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