feat: circuit breaker configuration

src/extensions/extension-interfaces.ts

@@ -91,6 +91,13 @@ export interface ServiceBuild {
    * @default - 200
    */
   readonly maxHealthyPercent?: number;
+
+  /**
+   * Circuit breaker configuration for the service.
+   *
+   * @default - No circuit breaker configured
+   */
+  readonly circuitBreaker?: ecs.DeploymentCircuitBreaker;
 }
 
 /**

src/service.ts

@@ -55,6 +55,13 @@ export interface ServiceProps {
    * @default none
    */
   readonly autoScaleTaskCount?: AutoScalingOptions;
+
+  /**
+   * Circuit breaker configuration for the service.
+   *
+   * @default - No circuit breaker configured
+   */
+  readonly circuitBreaker?: ecs.DeploymentCircuitBreaker;
 }
 
 export interface AutoScalingOptions {
@@ -231,6 +238,7 @@ export class Service extends Construct {
       taskDefinition: this.taskDefinition,
       minHealthyPercent: 100,
       maxHealthyPercent: 200,
+      circuitBreaker: props.circuitBreaker,
       desiredCount: props.desiredCount ?? 1,
     } as ServiceBuild;
 

test/service.test.ts

@@ -21,6 +21,39 @@ describe('service', () => {
     }).toThrow(/Service 'my-service' must have a Container extension/);
   });
 
+  test('allows circuit breaker configuration', () => {
+    // GIVEN
+    const stack = new Stack();
+
+    // WHEN
+    const environment = new Environment(stack, 'production');
+    const serviceDescription = new ServiceDescription();
+    serviceDescription.add(new Container({
+      cpu: 256,
+      memoryMiB: 512,
+      trafficPort: 80,
+      image: ecs.ContainerImage.fromRegistry('nathanpeck/name'),
+    }));
+
+    new Service(stack, 'my-service', {
+      environment,
+      serviceDescription,
+      circuitBreaker: {
+        rollback: true,
+      },
+    });
+
+    // THEN
+    Template.fromStack(stack).hasResourceProperties('AWS::ECS::Service', {
+      DeploymentConfiguration: {
+        DeploymentCircuitBreaker: {
+          Enable: true,
+          Rollback: true,
+        },
+      },
+    });
+  });
+
   test('allows scaling on a target CPU utilization', () => {
     // GIVEN
     const stack = new Stack();