chore(elasticloadbalancingv2): Add stickiness cookie duration checks (#13263)

One little extra check rather than finding this out during the ALB deployment process.

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: robertd

packages/@aws-cdk/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts

@@ -151,6 +151,9 @@ export class ApplicationTargetGroup extends TargetGroupBase implements IApplicat
    * @see https://docs.aws.amazon.com/elasticloadbalancing/latest/application/sticky-sessions.html
    */
   public enableCookieStickiness(duration: Duration, cookieName?: string) {
+    if (duration.toSeconds() < 1 || duration.toSeconds() > 604800) {
+      throw new Error('Stickiness cookie duration value must be between 1 second and 7 days (604800 seconds).');
+    }
     if (cookieName !== undefined) {
       if (!Token.isUnresolved(cookieName) && (cookieName.startsWith('AWSALB') || cookieName.startsWith('AWSALBAPP') || cookieName.startsWith('AWSALBTG'))) {
         throw new Error('App cookie names that start with the following prefixes are not allowed: AWSALB, AWSALBAPP, and AWSALBTG; they\'re reserved for use by the load balancer.');

packages/@aws-cdk/aws-elasticloadbalancingv2/test/alb/target-group.test.ts

@@ -190,4 +190,19 @@ describe('tests', () => {
       });
     }).toThrow(/App cookie name cannot be an empty string./);
   });
+
+  test('Bad stickiness duration value', () => {
+    // GIVEN
+    const app = new cdk.App();
+    const stack = new cdk.Stack(app, 'Stack');
+    const vpc = new ec2.Vpc(stack, 'VPC', {});
+
+    // THEN
+    expect(() => {
+      new elbv2.ApplicationTargetGroup(stack, 'TargetGroup', {
+        stickinessCookieDuration: cdk.Duration.days(8),
+        vpc,
+      });
+    }).toThrow(/Stickiness cookie duration value must be between 1 second and 7 days \(604800 seconds\)./);
+  });
 });