feat(ec2): more router types (#20151)

Fixes #19057
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-route.html#aws-resource-ec2-route-properties

----

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Author: peterwoodworth

packages/@aws-cdk/aws-ec2/lib/vpc.ts

@@ -1811,6 +1811,11 @@ export interface AddRouteOptions {
  * Type of router used in route
  */
 export enum RouterType {
+  /**
+   * Carrier gateway
+   */
+  CARRIER_GATEWAY = 'CarrierGateway',
+
   /**
    * Egress-only Internet Gateway
    */
@@ -1826,6 +1831,11 @@ export enum RouterType {
    */
   INSTANCE = 'Instance',
 
+  /**
+   * Local Gateway
+   */
+  LOCAL_GATEWAY = 'LocalGateway',
+
   /**
    * NAT Gateway
    */
@@ -1836,20 +1846,34 @@ export enum RouterType {
    */
   NETWORK_INTERFACE = 'NetworkInterface',
 
+  /**
+   * Transit Gateway
+   */
+  TRANSIT_GATEWAY = 'TransitGateway',
+
   /**
    * VPC peering connection
    */
   VPC_PEERING_CONNECTION = 'VpcPeeringConnection',
+
+  /**
+   * VPC Endpoint for gateway load balancers
+   */
+  VPC_ENDPOINT = 'VpcEndpoint',
 }
 
 function routerTypeToPropName(routerType: RouterType) {
   return ({
+    [RouterType.CARRIER_GATEWAY]: 'carrierGatewayId',
     [RouterType.EGRESS_ONLY_INTERNET_GATEWAY]: 'egressOnlyInternetGatewayId',
     [RouterType.GATEWAY]: 'gatewayId',
     [RouterType.INSTANCE]: 'instanceId',
+    [RouterType.LOCAL_GATEWAY]: 'localGatewayId',
     [RouterType.NAT_GATEWAY]: 'natGatewayId',
     [RouterType.NETWORK_INTERFACE]: 'networkInterfaceId',
+    [RouterType.TRANSIT_GATEWAY]: 'transitGatewayId',
     [RouterType.VPC_PEERING_CONNECTION]: 'vpcPeeringConnectionId',
+    [RouterType.VPC_ENDPOINT]: 'vpcEndpointId',
   })[routerType];
 }
 

packages/@aws-cdk/aws-ec2/test/vpc.test.ts

@@ -1869,6 +1869,44 @@ describe('vpc', () => {
       expect(subnetIds).toEqual(expected.map(s => s.subnetId));
 
     });
+
+    test('tests router types', () => {
+      // GIVEN
+      const stack = getTestStack();
+      const vpc = new Vpc(stack, 'Vpc');
+
+      // WHEN
+      (vpc.publicSubnets[0] as Subnet).addRoute('TransitRoute', {
+        routerType: RouterType.TRANSIT_GATEWAY,
+        routerId: 'transit-id',
+      });
+      (vpc.publicSubnets[0] as Subnet).addRoute('CarrierRoute', {
+        routerType: RouterType.CARRIER_GATEWAY,
+        routerId: 'carrier-gateway-id',
+      });
+      (vpc.publicSubnets[0] as Subnet).addRoute('LocalGatewayRoute', {
+        routerType: RouterType.LOCAL_GATEWAY,
+        routerId: 'local-gateway-id',
+      });
+      (vpc.publicSubnets[0] as Subnet).addRoute('VpcEndpointRoute', {
+        routerType: RouterType.VPC_ENDPOINT,
+        routerId: 'vpc-endpoint-id',
+      });
+
+      // THEN
+      Template.fromStack(stack).hasResourceProperties('AWS::EC2::Route', {
+        TransitGatewayId: 'transit-id',
+      });
+      Template.fromStack(stack).hasResourceProperties('AWS::EC2::Route', {
+        LocalGatewayId: 'local-gateway-id',
+      });
+      Template.fromStack(stack).hasResourceProperties('AWS::EC2::Route', {
+        CarrierGatewayId: 'carrier-gateway-id',
+      });
+      Template.fromStack(stack).hasResourceProperties('AWS::EC2::Route', {
+        VpcEndpointId: 'vpc-endpoint-id',
+      });
+    });
   });
 });