aws: Support for weighted Route53 records added

- closes #1155

builtin/providers/aws/resource_aws_route53_record.go

@@ -45,6 +45,17 @@ func resourceAwsRoute53Record() *schema.Resource {
 				Required: true,
 			},
 
+			"weight": &schema.Schema{
+				Type:     schema.TypeInt,
+				Optional: true,
+			},
+
+			"set_identifier": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
+
 			"records": &schema.Schema{
 				Type:     schema.TypeSet,
 				Elem:     &schema.Schema{Type: schema.TypeString},
@@ -136,7 +147,15 @@ func resourceAwsRoute53RecordCreate(d *schema.ResourceData, meta interface{}) er
 	changeInfo := respRaw.(*route53.ChangeResourceRecordSetsOutput).ChangeInfo
 
 	// Generate an ID
-	d.SetId(fmt.Sprintf("%s_%s_%s", zone, d.Get("name").(string), d.Get("type").(string)))
+	vars := []string{
+		zone,
+		d.Get("name").(string),
+		d.Get("type").(string),
+	}
+	if v, ok := d.GetOk("set_identifier"); ok {
+		vars = append(vars, v.(string))
+	}
+	d.SetId(strings.Join(vars, "_"))
 
 	// Wait until we are done
 	wait = resource.StateChangeConf{
@@ -178,6 +197,10 @@ func resourceAwsRoute53RecordRead(d *schema.ResourceData, meta interface{}) erro
 		StartRecordType: aws.String(d.Get("type").(string)),
 	}
 
+	if v, ok := d.GetOk("set_identifier"); ok {
+		lopts.StartRecordIdentifier = aws.String(v.(string))
+	}
+
 	resp, err := conn.ListResourceRecordSets(lopts)
 	if err != nil {
 		return err
@@ -194,6 +217,10 @@ func resourceAwsRoute53RecordRead(d *schema.ResourceData, meta interface{}) erro
 			continue
 		}
 
+		if lopts.StartRecordIdentifier != nil && *record.SetIdentifier != *lopts.StartRecordIdentifier {
+			continue
+		}
+
 		found = true
 
 		err := d.Set("records", flattenResourceRecords(record.ResourceRecords))
@@ -201,6 +228,8 @@ func resourceAwsRoute53RecordRead(d *schema.ResourceData, meta interface{}) erro
 			return fmt.Errorf("[DEBUG] Error setting records for: %s, error: %#v", en, err)
 		}
 		d.Set("ttl", record.TTL)
+		d.Set("weight", record.Weight)
+		d.Set("set_identifier", record.SetIdentifier)
 
 		break
 	}
@@ -297,6 +326,15 @@ func resourceAwsRoute53RecordBuildSet(d *schema.ResourceData, zoneName string) (
 		TTL:             aws.Long(int64(d.Get("ttl").(int))),
 		ResourceRecords: records,
 	}
+
+	if v, ok := d.GetOk("weight"); ok {
+		rec.Weight = aws.Long(int64(v.(int)))
+	}
+
+	if v, ok := d.GetOk("set_identifier"); ok {
+		rec.SetIdentifier = aws.String(v.(string))
+	}
+
 	return rec, nil
 }
 

builtin/providers/aws/resource_aws_route53_record_test.go

@@ -122,6 +122,23 @@ func TestAccRoute53Record_wildcard(t *testing.T) {
 	})
 }
 
+func TestAccRoute53Record_weighted(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckRoute53RecordDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccRoute53WeightedCNAMERecord,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckRoute53RecordExists("aws_route53_record.www-dev"),
+					testAccCheckRoute53RecordExists("aws_route53_record.www-live"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckRoute53RecordDestroy(s *terraform.State) error {
 	conn := testAccProvider.Meta().(*AWSClient).r53conn
 	for _, rs := range s.RootModule().Resources {
@@ -282,3 +299,29 @@ resource "aws_route53_record" "default" {
 	records = ["lalalala"]
 }
 `
+
+const testAccRoute53WeightedCNAMERecord = `
+resource "aws_route53_zone" "main" {
+	name = "notexample.com"
+}
+
+resource "aws_route53_record" "www-dev" {
+  zone_id = "${aws_route53_zone.main.zone_id}"
+  name = "www"
+  type = "CNAME"
+  ttl = "5"
+  weight = 10
+  set_identifier = "dev"
+  records = ["dev.notexample.com"]
+}
+
+resource "aws_route53_record" "www-live" {
+  zone_id = "${aws_route53_zone.main.zone_id}"
+  name = "www"
+  type = "CNAME"
+  ttl = "5"
+  weight = 90
+  set_identifier = "live"
+  records = ["dev.notexample.com"]
+}
+`

website/source/docs/providers/aws/r/route53_record.html.markdown

@@ -12,6 +12,8 @@ Provides a Route53 record resource.
 
 ## Example Usage
 
+### Simple routing policy
+
 ```
 resource "aws_route53_record" "www" {
    zone_id = "${aws_route53_zone.primary.zone_id}"
@@ -22,6 +24,30 @@ resource "aws_route53_record" "www" {
 }
 ```
 
+### Weighted routing policy
+See [AWS Route53 Developer Guide](http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html#routing-policy-weighted) for details.
+```
+resource "aws_route53_record" "www-dev" {
+  zone_id = "${aws_route53_zone.primary.zone_id}"
+  name = "www"
+  type = "CNAME"
+  ttl = "5"
+  weight = 10
+  set_identifier = "dev"
+  records = ["dev.example.com"]
+}
+
+resource "aws_route53_record" "www-live" {
+  zone_id = "${aws_route53_zone.primary.zone_id}"
+  name = "www"
+  type = "CNAME"
+  ttl = "5"
+  weight = 90
+  set_identifier = "live"
+  records = ["live.example.com"]
+}
+```
+
 ## Argument Reference
 
 The following arguments are supported:
@@ -31,6 +57,9 @@ The following arguments are supported:
 * `type` - (Required) The record type.
 * `ttl` - (Required) The TTL of the record.
 * `records` - (Required) A string list of records.
+* `weight` - (Optional) The weight of weighted record (0-255).
+* `set_identifier` - (Optional) Unique identifier to differentiate weighted
+  record from one another. Required for each weighted record.
 
 ## Attributes Reference