feat: codegen cdk vended handler framework

packages/@aws-cdk/cdk-handler-framework/.eslintrc.js

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+const baseConfig = require('@aws-cdk/cdk-build-tools/config/eslintrc');
+baseConfig.parserOptions.project = __dirname + '/tsconfig.json';
+module.exports = baseConfig;

packages/@aws-cdk/cdk-handler-framework/.gitignore

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+*.js
+*.js.map
+*.d.ts
+tsconfig.json
+node_modules
+*.generated.ts
+dist
+.jsii
+
+.LAST_BUILD
+.nyc_output
+coverage
+nyc.config.js
+.LAST_PACKAGE
+*.snk
+!.eslintrc.js
+!jest.config.js
+
+junit.xml

packages/@aws-cdk/cdk-handler-framework/.npmignore

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+# Don't include original .ts files when doing `npm pack`
+*.ts
+!*.d.ts
+coverage
+.nyc_output
+*.tgz
+
+dist
+.LAST_PACKAGE
+.LAST_BUILD
+!*.js
+
+# Include .jsii
+!.jsii
+
+*.snk
+
+*.tsbuildinfo
+
+tsconfig.json
+.eslintrc.js
+jest.config.js
+
+# exclude cdk artifacts
+**/cdk.out
+junit.xml
+test/
+!*.lit.ts
+**/*.snapshot

packages/@aws-cdk/cdk-handler-framework/LICENSE

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packages/@aws-cdk/cdk-handler-framework/NOTICE

@@ -0,0 +1,2 @@
+AWS Cloud Development Kit (AWS CDK)
+Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.

packages/@aws-cdk/cdk-handler-framework/lib/cdk-imports.ts

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+import { ExternalModule, Type } from '@cdklabs/typewriter';
+
+class ConstructsModule extends ExternalModule {
+  public readonly Construct = Type.fromName(this, 'Construct');
+  public readonly IConstruct = Type.fromName(this, 'IConstruct');
+
+  public constructor() {
+    super('constructs');
+  }
+}
+
+class CdkHandlerModule extends ExternalModule {
+  public readonly CdkHandler = Type.fromName(this, 'CdkHandler');
+
+  public constructor() {
+    super('../../handler-framework/lib/cdk-handler');
+  }
+}
+
+class CdkFunctionModule extends ExternalModule {
+  public readonly CdkFunction = Type.fromName(this, 'CdkFunction');
+
+  public constructor() {
+    super('../../handler-framework/lib/cdk-function');
+  }
+}
+
+class CdkSingletonFunctionModule extends ExternalModule {
+  public readonly CdkSingletonFunction = Type.fromName(this, 'CdkSingletonFunction');
+
+  public constructor() {
+    super('../../handler-framework/lib/cdk-singleton-function');
+  }
+}
+
+export const CONSTRUCTS_MODULE = new ConstructsModule();
+export const CDK_HANDLER_MODULE = new CdkHandlerModule();
+export const CDK_FUNCTION_MODULE = new CdkFunctionModule();
+export const CDK_SINGLETON_FUNCTION_MODULE = new CdkSingletonFunctionModule();

packages/@aws-cdk/cdk-handler-framework/lib/class-builder.ts

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+import { SuperInitializer, ClassType, Type, IScope, expr, stmt } from '@cdklabs/typewriter';
+import { CDK_FUNCTION_MODULE, CDK_SINGLETON_FUNCTION_MODULE, CONSTRUCTS_MODULE } from './cdk-imports';
+
+export abstract class CdkHandlerClass extends ClassType {
+  public static buildCdkFunction(scope: IScope, className: string, codeDirectory: string): ClassType {
+    return new (class CdkFunction extends CdkHandlerClass {
+      public constructor() {
+        super(scope, {
+          name: className,
+          extends: CDK_FUNCTION_MODULE.CdkFunction,
+        });
+        this.buildConstructor(codeDirectory);
+      }
+    })();
+  }
+
+  public static buildCdkSingletonFunction(scope: IScope, className: string, codeDirectory: string): ClassType {
+    return new (class CdkSingleFunction extends CdkHandlerClass {
+      public constructor() {
+        super(scope, {
+          name: className,
+          extends: CDK_SINGLETON_FUNCTION_MODULE.CdkSingletonFunction,
+        });
+        this.buildConstructor(codeDirectory);
+      }
+    })();
+  }
+
+  public static buildCdkCustomResourceProvider() {}
+
+  private buildConstructor(codeDirectory: string, entrypoint?: string) {
+    // constructor
+    const init = this.addInitializer({});
+
+    // build CdkHandler instance
+    init.addBody(
+      stmt.constVar(
+        expr.ident('cdkHandlerProps'),
+        expr.object({
+          codeDirectory: expr.directCode(codeDirectory),
+          entrypoint: entrypoint ? expr.directCode(entrypoint) : expr.lit('index.handler'),
+        }),
+      ),
+    );
+    init.addBody(
+      stmt.constVar(
+        expr.ident('cdkHandler'),
+        expr.directCode('new CdkHandler(scope, `Handler`, cdkHandlerProps)'),
+      ),
+    );
+
+    // build super call
+    const scope = init.addParameter({
+      name: 'scope',
+      type: CONSTRUCTS_MODULE.Construct,
+    });
+    const id = init.addParameter({
+      name: 'id',
+      type: Type.STRING,
+    });
+    init.addBody(new SuperInitializer(scope, id, expr.object({
+      handler: expr.ident('cdkHandler'),
+    })));
+  }
+}