resource/aws_launch_configuration: Add support for capacity reservations

aws/resource_aws_launch_template.go

@@ -139,6 +139,37 @@ func resourceAwsLaunchTemplate() *schema.Resource {
 				},
 			},
 
+			"capacity_reservation_specification": {
+				Type:     schema.TypeList,
+				Optional: true,
+				MaxItems: 1,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"capacity_reservation_preference": {
+							Type:     schema.TypeString,
+							Optional: true,
+							ValidateFunc: validation.StringInSlice([]string{
+								ec2.CapacityReservationPreferenceOpen,
+								ec2.CapacityReservationPreferenceNone,
+							}, false),
+						},
+						"capacity_reservation_target": {
+							Type:     schema.TypeList,
+							Optional: true,
+							MaxItems: 1,
+							Elem: &schema.Resource{
+								Schema: map[string]*schema.Schema{
+									"capacity_reservation_id": {
+										Type:     schema.TypeString,
+										Optional: true,
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+
 			"credit_specification": {
 				Type:     schema.TypeList,
 				Optional: true,
@@ -574,6 +605,10 @@ func resourceAwsLaunchTemplateRead(d *schema.ResourceData, meta interface{}) err
 		return err
 	}
 
+	if err := d.Set("capacity_reservation_specification", getCapacityReservationSpecification(ltData.CapacityReservationSpecification)); err != nil {
+		return err
+	}
+
 	if strings.HasPrefix(aws.StringValue(ltData.InstanceType), "t2") || strings.HasPrefix(aws.StringValue(ltData.InstanceType), "t3") {
 		if err := d.Set("credit_specification", getCreditSpecification(ltData.CreditSpecification)); err != nil {
 			return err
@@ -706,6 +741,27 @@ func getBlockDeviceMappings(m []*ec2.LaunchTemplateBlockDeviceMapping) []interfa
 	return s
 }
 
+func getCapacityReservationSpecification(crs *ec2.LaunchTemplateCapacityReservationSpecificationResponse) []interface{} {
+	s := []interface{}{}
+	if crs != nil {
+		s = append(s, map[string]interface{}{
+			"capacity_reservation_preference": aws.StringValue(crs.CapacityReservationPreference),
+			"capacity_reservation_target":     getCapacityReservationTarget(crs.CapacityReservationTarget),
+		})
+	}
+	return s
+}
+
+func getCapacityReservationTarget(crt *ec2.CapacityReservationTargetResponse) []interface{} {
+	s := []interface{}{}
+	if crt != nil {
+		s = append(s, map[string]interface{}{
+			"capacity_reservation_id": aws.StringValue(crt.CapacityReservationId),
+		})
+	}
+	return s
+}
+
 func getCreditSpecification(cs *ec2.CreditSpecification) []interface{} {
 	s := []interface{}{}
 	if cs != nil {
@@ -933,6 +989,14 @@ func buildLaunchTemplateData(d *schema.ResourceData, meta interface{}) (*ec2.Req
 		opts.BlockDeviceMappings = blockDeviceMappings
 	}
 
+	if v, ok := d.GetOk("capacity_reservation_specification"); ok {
+		crs := v.([]interface{})
+
+		if len(crs) > 0 {
+			opts.CapacityReservationSpecification = readCapacityReservationSpecificationFromConfig(crs[0].(map[string]interface{}))
+		}
+	}
+
 	if v, ok := d.GetOk("credit_specification"); ok && (strings.HasPrefix(instanceType, "t2") || strings.HasPrefix(instanceType, "t3")) {
 		cs := v.([]interface{})
 
@@ -1174,6 +1238,34 @@ func readIamInstanceProfileFromConfig(iip map[string]interface{}) *ec2.LaunchTem
 	return iamInstanceProfile
 }
 
+func readCapacityReservationSpecificationFromConfig(crs map[string]interface{}) *ec2.LaunchTemplateCapacityReservationSpecificationRequest {
+	capacityReservationSpecification := &ec2.LaunchTemplateCapacityReservationSpecificationRequest{}
+
+	if v, ok := crs["capacity_reservation_preference"].(string); ok && v != "" {
+		capacityReservationSpecification.CapacityReservationPreference = aws.String(v)
+	}
+
+	if v, ok := crs["capacity_reservation_target"]; ok {
+		crt := v.([]interface{})
+
+		if len(crt) > 0 {
+			capacityReservationSpecification.CapacityReservationTarget = readCapacityReservationTargetFromConfig(crt[0].(map[string]interface{}))
+		}
+	}
+
+	return capacityReservationSpecification
+}
+
+func readCapacityReservationTargetFromConfig(crt map[string]interface{}) *ec2.CapacityReservationTarget {
+	capacityReservationTarget := &ec2.CapacityReservationTarget{}
+
+	if v, ok := crt["capacity_reservation_id"].(string); ok && v != "" {
+		capacityReservationTarget.CapacityReservationId = aws.String(v)
+	}
+
+	return capacityReservationTarget
+}
+
 func readCreditSpecificationFromConfig(cs map[string]interface{}) *ec2.CreditSpecificationRequest {
 	creditSpecification := &ec2.CreditSpecificationRequest{}
 

aws/resource_aws_launch_template_test.go

@@ -326,6 +326,46 @@ func TestAccAWSLaunchTemplate_tags(t *testing.T) {
 	})
 }
 
+func TestAccAWSLaunchTemplate_capacityReservation_preference(t *testing.T) {
+	var template ec2.LaunchTemplate
+	resName := "aws_launch_template.foo"
+	rInt := acctest.RandInt()
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSLaunchTemplateDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSLaunchTemplateConfig_capacityReservation_preference(rInt, "open"),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSLaunchTemplateExists(resName, &template),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAWSLaunchTemplate_capacityReservation_target(t *testing.T) {
+	var template ec2.LaunchTemplate
+	resName := "aws_launch_template.foo"
+	rInt := acctest.RandInt()
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSLaunchTemplateDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSLaunchTemplateConfig_capacityReservation_target(rInt),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSLaunchTemplateExists(resName, &template),
+				),
+			},
+		},
+	})
+}
+
 func TestAccAWSLaunchTemplate_creditSpecification_nonBurstable(t *testing.T) {
 	var template ec2.LaunchTemplate
 	rName := acctest.RandomWithPrefix("tf-acc-test")
@@ -771,6 +811,41 @@ resource "aws_launch_template" "foo" {
 `, rInt)
 }
 
+func testAccAWSLaunchTemplateConfig_capacityReservation_preference(rInt int, preference string) string {
+	return fmt.Sprintf(`
+resource "aws_launch_template" "foo" {
+  name = "foo_%d"
+
+	capacity_reservation_specification {
+		capacity_reservation_preference = %q
+	}
+}
+`, rInt, preference)
+}
+
+func testAccAWSLaunchTemplateConfig_capacityReservation_target(rInt int) string {
+	return fmt.Sprintf(`
+data "aws_availability_zones" "available" {}
+
+resource "aws_ec2_capacity_reservation" "test" {
+	availability_zone = "${data.aws_availability_zones.available.names[0]}"
+	instance_count    = 1
+	instance_platform = "Linux/UNIX"
+	instance_type     = "t2.micro"
+}
+
+resource "aws_launch_template" "foo" {
+  name = "foo_%d"
+
+	capacity_reservation_specification {
+		capacity_reservation_target {
+			capacity_reservation_id = "${aws_ec2_capacity_reservation.test.id}"
+		}
+	}
+}
+`, rInt)
+}
+
 func testAccAWSLaunchTemplateConfig_creditSpecification(rName, instanceType, cpuCredits string) string {
 	return fmt.Sprintf(`
 resource "aws_launch_template" "foo" {

website/docs/r/launch_template.html.markdown

@@ -23,6 +23,10 @@ resource "aws_launch_template" "foo" {
     }
   }
 
+  capacity_reservation_specification {
+    capacity_reservation_preference = "open"
+  }
+
   credit_specification {
     cpu_credits = "standard"
   }
@@ -75,7 +79,7 @@ resource "aws_launch_template" "foo" {
       Name = "test"
     }
   }
-  
+
   user_data = "${base64encode(...)}"
 }
 ```
@@ -89,7 +93,8 @@ The following arguments are supported:
 * `description` - Description of the launch template.
 * `block_device_mappings` - Specify volumes to attach to the instance besides the volumes specified by the AMI.
   See [Block Devices](#block-devices) below for details.
-* `credit_specification` - Customize the credit specification of the instance. See [Credit 
+* `capacity_reservation_specification` - Targeting for EC2 capacity reservations. See [Capacity Reservation Specification](#capacity-reservation-specification) below for more details.
+* `credit_specification` - Customize the credit specification of the instance. See [Credit
   Specification](#credit-specification) below for more details.
 * `disable_api_termination` - If `true`, enables [EC2 Instance
   Termination Protection](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/terminating-instances.html#Using_ChangingDisableAPITermination)
@@ -107,7 +112,7 @@ The following arguments are supported:
 * `kernel_id` - The kernel ID.
 * `key_name` - The key name to use for the instance.
 * `monitoring` - The monitoring option for the instance. See [Monitoring](#monitoring) below for more details.
-* `network_interfaces` - Customize network interfaces to be attached at instance boot time. See [Network 
+* `network_interfaces` - Customize network interfaces to be attached at instance boot time. See [Network
   Interfaces](#network-interfaces) below for more details.
 * `placement` - The placement of the instance. See [Placement](#placement) below for more details.
 * `ram_disk_id` - The ID of the RAM disk.
@@ -149,6 +154,17 @@ The `ebs` block supports the following:
 * `volume_size` - The size of the volume in gigabytes.
 * `volume_type` - The type of volume. Can be `"standard"`, `"gp2"`, or `"io1"`. (Default: `"standard"`).
 
+### Capacity Reservation Specification
+
+The `capacity_reservation_specification` block supports the following:
+
+* `capacity_reservation_preference` - Indicates the instance's Capacity Reservation preferences. Can be `open` or `none`. (Default `none`).
+* `capacity_reservation_target` - Used to target a specific Capacity Reservation:
+
+The `capacity_reservation_target` block supports the following:
+
+* `capacity_reservation_id` - The ID of the Capacity Reservation to target.
+
 ### Credit Specification
 
 Credit specification can be applied/modified to the EC2 Instance at any time.
@@ -187,7 +203,7 @@ The `instance_market_options` block supports the following:
 The `spot_options` block supports the following:
 
 * `block_duration_minutes` - The required duration in minutes. This value must be a multiple of 60.
-* `instance_interruption_behavior` - The behavior when a Spot Instance is interrupted. Can be `hibernate`, 
+* `instance_interruption_behavior` - The behavior when a Spot Instance is interrupted. Can be `hibernate`,
   `stop`, or `terminate`. (Default: `terminate`).
 * `max_price` - The maximum hourly price you're willing to pay for the Spot Instances.
 * `spot_instance_type` - The Spot Instance request type. Can be `one-time`, or `persistent`.