feat(cloudfront): CloudFront Function runtime property

packages/@aws-cdk-testing/framework-integ/test/aws-cloudfront/test/integ.distribution-function.ts

@@ -7,6 +7,7 @@ const stack = new cdk.Stack(app, 'integ-distribution-function', { env: { region:
 
 const cfFunction = new cloudfront.Function(stack, 'Function', {
   code: cloudfront.FunctionCode.fromInline('function handler(event) { return event.request }'),
+  runtime: cloudfront.FunctionRuntime.JS_2_0,
 });
 
 new cloudfront.Distribution(stack, 'Dist', {

packages/aws-cdk-lib/aws-cloudfront/lib/function.ts

@@ -122,6 +122,12 @@ export interface FunctionProps {
    * The source code of the function.
    */
   readonly code: FunctionCode;
+
+  /**
+   * The runtime environment for the function.
+   * @default FunctionRuntime.JS_1_0
+   */
+  readonly runtime?: FunctionRuntime;
 }
 
 /**
@@ -165,7 +171,7 @@ export class Function extends Resource implements IFunction {
       functionCode: props.code.render(),
       functionConfig: {
         comment: props.comment ?? this.functionName,
-        runtime: 'cloudfront-js-1.0',
+        runtime: props.runtime ?? FunctionRuntime.JS_1_0,
       },
       name: this.functionName,
     });
@@ -212,3 +218,19 @@ export interface FunctionAssociation {
   /** The type of event which should invoke the function. */
   readonly eventType: FunctionEventType;
 }
+
+/**
+ * The function's runtime environment version.
+ */
+export enum FunctionRuntime {
+
+  /**
+   * cloudfront-js-1.0
+   */
+  JS_1_0 = 'cloudfront-js-1.0',
+
+  /**
+   * cloudfront-js-2.0
+   */
+  JS_2_0 = 'cloudfront-js-2.0',
+}

packages/aws-cdk-lib/aws-cloudfront/test/function.test.ts

@@ -1,7 +1,7 @@
 import * as path from 'path';
 import { Template } from '../../assertions';
 import { App, Stack } from '../../core';
-import { Function, FunctionCode } from '../lib';
+import { Function, FunctionCode, FunctionRuntime } from '../lib';
 
 describe('CloudFront Function', () => {
 
@@ -132,4 +132,32 @@ describe('CloudFront Function', () => {
       },
     });
   });
+
+  test('runtime testing', () => {
+    const app = new App();
+    const stack = new Stack(app, 'Stack', {
+      env: { account: '123456789012', region: 'testregion' },
+    });
+    new Function(stack, 'CF2', {
+      code: FunctionCode.fromInline('code'),
+      runtime: FunctionRuntime.JS_2_0,
+    });
+
+    Template.fromStack(stack).templateMatches({
+      Resources: {
+        CF2D7241DD7: {
+          Type: 'AWS::CloudFront::Function',
+          Properties: {
+            Name: 'testregionStackCF2CE3F783F',
+            AutoPublish: true,
+            FunctionCode: 'code',
+            FunctionConfig: {
+              Comment: 'testregionStackCF2CE3F783F',
+              Runtime: 'cloudfront-js-2.0',
+            },
+          },
+        },
+      },
+    });
+  });
 });