provider/aws: Add the enable_sni attribute for Route53 health checks.

builtin/providers/aws/resource_aws_route53_health_check.go

@@ -115,6 +115,11 @@ func resourceAwsRoute53HealthCheck() *schema.Resource {
 				Optional: true,
 				ForceNew: true,
 			},
+			"enable_sni": &schema.Schema{
+				Type:     schema.TypeBool,
+				Optional: true,
+				Computed: true,
+			},
 
 			"tags": tagsSchema(),
 		},
@@ -173,6 +178,10 @@ func resourceAwsRoute53HealthCheckUpdate(d *schema.ResourceData, meta interface{
 		updateHealthCheck.InsufficientDataHealthStatus = aws.String(d.Get("insufficient_data_health_status").(string))
 	}
 
+	if d.HasChange("enable_sni") {
+		updateHealthCheck.EnableSNI = aws.Bool(d.Get("enable_sni").(bool))
+	}
+
 	_, err := conn.UpdateHealthCheck(updateHealthCheck)
 	if err != nil {
 		return err
@@ -230,6 +239,10 @@ func resourceAwsRoute53HealthCheckCreate(d *schema.ResourceData, meta interface{
 		healthConfig.Inverted = aws.Bool(v.(bool))
 	}
 
+	if v, ok := d.GetOk("enable_sni"); ok {
+		healthConfig.EnableSNI = aws.Bool(v.(bool))
+	}
+
 	if *healthConfig.Type == route53.HealthCheckTypeCalculated {
 		if v, ok := d.GetOk("child_healthchecks"); ok {
 			healthConfig.ChildHealthChecks = expandStringList(v.(*schema.Set).List())
@@ -314,6 +327,7 @@ func resourceAwsRoute53HealthCheckRead(d *schema.ResourceData, meta interface{})
 	d.Set("child_healthchecks", updated.ChildHealthChecks)
 	d.Set("child_health_threshold", updated.HealthThreshold)
 	d.Set("insufficient_data_health_status", updated.InsufficientDataHealthStatus)
+	d.Set("enable_sni", updated.EnableSNI)
 
 	if updated.AlarmIdentifier != nil {
 		d.Set("cloudwatch_alarm_name", updated.AlarmIdentifier.Name)

builtin/providers/aws/resource_aws_route53_health_check_test.go

@@ -122,6 +122,41 @@ func TestAccAWSRoute53HealthCheck_CloudWatchAlarmCheck(t *testing.T) {
 	})
 }
 
+func TestAccAWSRoute53HealthCheck_withSNI(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:      func() { testAccPreCheck(t) },
+		IDRefreshName: "aws_route53_health_check.foo",
+		Providers:     testAccProviders,
+		CheckDestroy:  testAccCheckRoute53HealthCheckDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccRoute53HealthCheckConfigWithoutSNI,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckRoute53HealthCheckExists("aws_route53_health_check.foo"),
+					resource.TestCheckResourceAttr(
+						"aws_route53_health_check.foo", "enable_sni", "true"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccRoute53HealthCheckConfigWithSNIDisabled,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckRoute53HealthCheckExists("aws_route53_health_check.foo"),
+					resource.TestCheckResourceAttr(
+						"aws_route53_health_check.foo", "enable_sni", "false"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccRoute53HealthCheckConfigWithSNI,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckRoute53HealthCheckExists("aws_route53_health_check.foo"),
+					resource.TestCheckResourceAttr(
+						"aws_route53_health_check.foo", "enable_sni", "true"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckRoute53HealthCheckDestroy(s *terraform.State) error {
 	conn := testAccProvider.Meta().(*AWSClient).r53conn
 
@@ -314,3 +349,56 @@ resource "aws_route53_health_check" "foo" {
    }
 }
 `
+
+const testAccRoute53HealthCheckConfigWithoutSNI = `
+resource "aws_route53_health_check" "foo" {
+  fqdn = "dev.notexample.com"
+  port = 443
+  type = "HTTPS"
+  resource_path = "/"
+  failure_threshold = "2"
+  request_interval = "30"
+  measure_latency = true
+  invert_healthcheck = true
+
+  tags = {
+    Name = "tf-test-health-check"
+   }
+}
+`
+
+const testAccRoute53HealthCheckConfigWithSNI = `
+resource "aws_route53_health_check" "foo" {
+	fqdn = "dev.notexample.com"
+  port = 443
+  type = "HTTPS"
+  resource_path = "/"
+  failure_threshold = "2"
+  request_interval = "30"
+  measure_latency = true
+  invert_healthcheck = true
+  enable_sni = true
+
+  tags = {
+    Name = "tf-test-health-check"
+   }
+}
+`
+
+const testAccRoute53HealthCheckConfigWithSNIDisabled = `
+resource "aws_route53_health_check" "foo" {
+	fqdn = "dev.notexample.com"
+  port = 443
+  type = "HTTPS"
+  resource_path = "/"
+  failure_threshold = "2"
+  request_interval = "30"
+  measure_latency = true
+  invert_healthcheck = true
+  enable_sni = false
+
+  tags = {
+    Name = "tf-test-health-check"
+   }
+}
+`

website/source/docs/providers/aws/r/route53_health_check.html.markdown

@@ -75,6 +75,7 @@ The following arguments are supported:
 * `search_string` - (Optional) String searched in the first 5120 bytes of the response body for check to be considered healthy.
 * `measure_latency` - (Optional) A Boolean value that indicates whether you want Route 53 to measure the latency between health checkers in multiple AWS regions and your endpoint and to display CloudWatch latency graphs in the Route 53 console.
 * `invert_healthcheck` - (Optional) A boolean value that indicates whether the status of health check should be inverted. For example, if a health check is healthy but Inverted is True , then Route 53 considers the health check to be unhealthy.
+* `enable_sni` - (Optional) A boolean value that indicates whether Route53 should send the `fqdn` to the endpoint when performing the health check. This defaults to AWS' defaults: when the `type` is "HTTPS" `enable_sni` defaults to `true`, when `type` is anything else `enable_sni` defaults to `false`.
 * `child_healthchecks` - (Optional) For a specified parent health check, a list of HealthCheckId values for the associated child health checks.
 * `child_health_threshold` - (Optional) The minimum number of child health checks that must be healthy for Route 53 to consider the parent health check to be healthy. Valid values are integers between 0 and 256, inclusive
 * `cloudwatch_alarm_name` - (Optional) The name of the CloudWatch alarm.
@@ -92,4 +93,4 @@ Route53 Health Checks can be imported using the `health check id`, e.g.
 
 ```
 $ terraform import aws_route53_health_check.http_check abcdef11-2222-3333-4444-555555fedcba
-```
+```