fix(deadline): allow traffic from RenderQueue to UsageBasedLicensing

packages/aws-rfdk/lib/deadline/lib/render-queue.ts

@@ -113,6 +113,11 @@ export interface IRenderQueue extends IConstruct, IConnectable {
    */
   readonly endpoint: ConnectableApplicationEndpoint;
 
+  /**
+   * A connections object for controlling access of the compute resources that host the render queue.
+   */
+  readonly backendConnections: Connections;
+
   /**
    * Configures an ECS cluster to be able to connect to a RenderQueue
    * @returns An environment mapping that is used to configure the Docker Images
@@ -187,6 +192,11 @@ abstract class RenderQueueBase extends Construct implements IRenderQueue {
    */
   public abstract readonly repository: IRepository;
 
+  /**
+   * @inheritdoc
+   */
+  public abstract readonly backendConnections: Connections;
+
   /**
    * Configures an ECS cluster to be able to connect to a RenderQueue
    * @returns An environment mapping that is used to configure the Docker Images
@@ -314,6 +324,11 @@ export class RenderQueue extends RenderQueueBase implements IGrantable {
    */
   public readonly repository: IRepository;
 
+  /**
+   * @inheritdoc
+   */
+  public readonly backendConnections: Connections;
+
   /**
    * Whether SEP policies have been added
    */
@@ -440,6 +455,8 @@ export class RenderQueue extends RenderQueueBase implements IGrantable {
       securityGroup: props.securityGroups?.backend,
     });
 
+    this.backendConnections = this.asg.connections;
+
     /**
      * The ECS-optimized AMI that is defaulted to when adding capacity to a cluster does not include the awscli or unzip
      * packages as is the case with the standard Amazon Linux AMI. These are required by RFDK scripts to configure the

packages/aws-rfdk/lib/deadline/lib/usage-based-licensing.ts

@@ -444,9 +444,12 @@ export interface UsageBasedLicensingProps {
  *
  * The Deadline License Forwarder is set up to run within an AWS ECS task.
  *
- * Access to the running License Forwarder is gated by a security group that, by default, allows no ingress;
- * when a Deadline Worker requires access to licensing, then the RFDK constructs will grant that worker’s security group
- * ingress on TCP port 17004 as well as other ports as required by the specific licenses being used.
+ * Access to the running License Forwarder is gated by a security group that, by default, only allows ingress from the
+ * Render Queue (in order to register Workers for license forwarding).
+ *
+ * When a Deadline Worker requires access to licensing via `UsageBasedLicensing.grantPortAccess(...)`, then the RFDK
+ * constructs will grant that worker’s security group ingress on TCP port 17004 as well as other ports as required by
+ * the specific licenses being used.
  *
  * Note: This construct does not currently implement the Deadline License Forwarder's Web Forwarding functionality.
  * This construct is not usable in any China region.
@@ -617,6 +620,9 @@ export class UsageBasedLicensing extends Construct implements IGrantable {
       });
     }
 
+    // Grant the render queue the ability to connect to the license forwarder to register workers
+    this.asg.connections.allowFrom(props.renderQueue.backendConnections, Port.tcp(UsageBasedLicensing.LF_PORT));
+
     // Tag deployed resources with RFDK meta-data
     tagConstruct(this);
   }

packages/aws-rfdk/lib/deadline/test/render-queue.test.ts

@@ -2974,4 +2974,29 @@ describe('RenderQueue', () => {
       });
     });
   });
+
+  test('.backendConnections is associated with ASG security group rules', () => {
+    // GIVEN
+    const instance = new Instance(dependencyStack, 'BackendConnectionInstance', {
+      instanceType: InstanceType.of(InstanceClass.T3, InstanceSize.MICRO),
+      machineImage: MachineImage.latestAmazonLinux(),
+      vpc,
+    });
+    const portNumber = 5555;
+    const port = Port.tcp(portNumber);
+    const asgSecurityGroup = renderQueueCommon.asg.connections.securityGroups[0];
+
+    // WHEN
+    renderQueueCommon.backendConnections.allowFrom(instance, port);
+
+    // THEN
+    expectCDK(stack).to(haveResourceLike('AWS::EC2::SecurityGroupIngress', {
+      IpProtocol: 'tcp',
+      Description: `from ${instance.connections.securityGroups[0].uniqueId}:${portNumber}`,
+      GroupId: stack.resolve(asgSecurityGroup.securityGroupId),
+      SourceSecurityGroupId: stack.resolve(instance.connections.securityGroups[0].securityGroupId),
+      FromPort: portNumber,
+      ToPort: portNumber,
+    }));
+  });
 });

packages/aws-rfdk/lib/deadline/test/usage-based-licensing.test.ts

@@ -626,23 +626,37 @@ describe('UsageBasedLicensing', () => {
   });
 
   describe('configures render queue', () => {
-    test('adds ingress rule for asg', () => {
+    test('adds ingress rule from UsageBasedLicensing ASG to RenderQueue ASG', () => {
+      // GIVEN
+      const renderQueueSecurityGroup = renderQueue.connections.securityGroups[0];
+
       // WHEN
-      createUbl();
+      const ubl = createUbl();
+      const ublSecurityGroup = ubl.connections.securityGroups[0];
 
       expectCDK(stack).to(haveResourceLike('AWS::EC2::SecurityGroupIngress', {
         IpProtocol: 'tcp',
         FromPort: 4433,
         ToPort: 4433,
-        GroupId: {
-          'Fn::ImportValue': stringLike(`${Stack.of(renderQueue).stackName}:ExportsOutputFnGetAttRQNonDefaultPortLBSecurityGroup*`),
-        },
-        SourceSecurityGroupId: {
-          'Fn::GetAtt': [
-            'UBLClusterASGInstanceSecurityGroupAA1A7A2D',
-            'GroupId',
-          ],
-        },
+        GroupId: stack.resolve(renderQueueSecurityGroup.securityGroupId),
+        SourceSecurityGroupId: stack.resolve(ublSecurityGroup.securityGroupId),
+      }));
+    });
+
+    test('adds ingress rule from RenderQueue ASG to UsageBasedLicensing ASG', () => {
+      // GIVEN
+      const renderQueueSecurityGroup = renderQueue.backendConnections.securityGroups[0];
+
+      // WHEN
+      const ubl = createUbl();
+      const ublSecurityGroup = ubl.connections.securityGroups[0];
+
+      expectCDK(stack).to(haveResourceLike('AWS::EC2::SecurityGroupIngress', {
+        IpProtocol: 'tcp',
+        FromPort: 17004,
+        ToPort: 17004,
+        GroupId: stack.resolve(ublSecurityGroup.securityGroupId),
+        SourceSecurityGroupId: stack.resolve(renderQueueSecurityGroup.securityGroupId),
       }));
     });