feat(s3): allow user to set Log Group on S3 Bucket autoDeleteObjects provider lambda (#30394)

### Issue # (if applicable)

Closes #24815.

### Reason for this change

To allow log group customization on the custom resource lambda created for the `autoDeleteObjects` feature.

### Description of changes

At the highest level overview, a static method `setAutoDeleteObjectsLogGroup` is added to the `Bucket` class. When it is called, it will set the log group on the `AutoDeleteObjectsProvider` lambda (i.e. setting the [`LoggingConfig.LogGroup`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-lambda-function-loggingconfig.html#cfn-lambda-function-loggingconfig-loggroup).

In order to support the above change, 2 underlying changes had to be made:
1. `setAutoDeleteObjectsLogGroup(..)` needs to have a way to find the singleton `AutoDeleteObjectsProvider` lambda. This means a method needs to be added in the `AutoDeleteObjectsProvider` class that returns the singleton. Note that the `AutoDeleteObjectsProvider` class itself is code generated. So I have modified the code gen logic to generate the `getProvider(..)` method, which returns the singleton.
2. With a handle of the singleton of type `AutoDeleteObjectsProvider`, which wraps the actual `AWS::Lambda::Function`, we need a way to set the log group on the lambda. With `AutoDeleteObjectsProvider` extending the `CustomResourceProviderBase` type, a method is added to `CustomResourceProviderBase` class to set the log group.

### Description of how you validated changes

Updated the integ test and ran it against my own AWS account

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

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

Author: samson-keung

packages/@aws-cdk-testing/framework-integ/test/aws-s3/test/integ.bucket-auto-delete-objects.js.snapshot/cdk-s3-bucket-auto-delete-objects.template.json

@@ -144,6 +144,11 @@
        " S3 bucket."
       ]
      ]
+    },
+    "LoggingConfig": {
+     "LogGroup": {
+      "Ref": "MyLogGroup5C0DAD85"
+     }
     }
    },
    "DependsOn": [
@@ -447,6 +452,15 @@
    "DependsOn": [
     "AWS679f53fac002430cb0da5b7982bd2287ServiceRoleC1EA0FF2"
    ]
+  },
+  "MyLogGroup5C0DAD85": {
+   "Type": "AWS::Logs::LogGroup",
+   "Properties": {
+    "LogGroupName": "MyLogGroup",
+    "RetentionInDays": 731
+   },
+   "UpdateReplacePolicy": "Retain",
+   "DeletionPolicy": "Retain"
   }
  },
  "Mappings": {

packages/@aws-cdk-testing/framework-integ/test/aws-s3/test/integ.bucket-auto-delete-objects.js.snapshot/manifest.json

@@ -3,6 +3,7 @@ import { App, CustomResource, CustomResourceProvider, RemovalPolicy, Stack, Stac
 import { IntegTest } from '@aws-cdk/integ-tests-alpha';
 import { Construct } from 'constructs';
 import * as s3 from 'aws-cdk-lib/aws-s3';
+import * as logs from 'aws-cdk-lib/aws-logs';
 import { AwsCustomResource, AwsCustomResourcePolicy, PhysicalResourceId } from 'aws-cdk-lib/custom-resources';
 import { STANDARD_CUSTOM_RESOURCE_PROVIDER_RUNTIME } from '../../config';
 
@@ -55,6 +56,10 @@ class TestStack extends Stack {
         resources: [bucketThatWillBeRemoved.bucketArn],
       }),
     });
+
+    s3.Bucket.setAutoDeleteObjectsLogGroup(this, new logs.LogGroup(this, 'MyLogGroup', {
+      logGroupName: 'MyLogGroup',
+    }));
   }
 }
 

packages/@aws-cdk-testing/framework-integ/test/aws-s3/test/integ.bucket-auto-delete-objects.js.snapshot/tree.json

@@ -274,6 +274,59 @@ export abstract class HandlerFrameworkClass extends ClassType {
           stmt.ret(expr.directCode('this.getOrCreateProvider(scope, uniqueid, props).serviceToken')),
         );
 
+        const idStatement = stmt.constVar(expr.ident('id'), expr.directCode('`${uniqueid}CustomResourceProvider`'));
+        const stackFromScopeStatement = stmt.constVar(expr.ident('stack'), expr.directCode('Stack.of(scope)'));
+        const logContextKeyStatement = stmt.constVar(expr.ident('key'), expr.directCode('`${uniqueid}CustomResourceLogGroup`'));
+        const getProviderMethod = this.addMethod({
+          name: 'getProvider',
+          static: true,
+          returnType: this.type,
+          docs: {
+            summary: 'Returns the stack-level singleton provider or undefined',
+          },
+        });
+        getProviderMethod.addParameter({
+          name: 'scope',
+          type: CONSTRUCTS_MODULE.Construct,
+        });
+        getProviderMethod.addParameter({
+          name: 'uniqueid',
+          type: Type.STRING,
+        });
+        getProviderMethod.addBody(
+          idStatement,
+          stackFromScopeStatement,
+          stmt.ret(expr.directCode(`stack.node.tryFindChild(id) as ${this.type}`)),
+        );
+
+        const useLogGroupMethod = this.addMethod({
+          name: 'useLogGroup',
+          static: true,
+          docs: {
+            summary: 'Set the log group to be used by the singleton provider',
+          },
+        });
+        useLogGroupMethod.addParameter({
+          name: 'scope',
+          type: CONSTRUCTS_MODULE.Construct,
+        });
+        useLogGroupMethod.addParameter({
+          name: 'uniqueid',
+          type: Type.STRING,
+        });
+        useLogGroupMethod.addParameter({
+          name: 'logGroupName',
+          type: Type.STRING,
+        });
+        useLogGroupMethod.addBody(
+          stackFromScopeStatement,
+          logContextKeyStatement,
+          expr.directCode('stack.node.addMetadata(key, logGroupName)'),
+          stmt.constVar(expr.ident('existing'), expr.directCode('this.getProvider(scope, uniqueid)')),
+          stmt.if_(expr.directCode('existing'))
+            .then(expr.directCode('existing.configureLambdaLogGroup(logGroupName)')),
+        );
+
         const getOrCreateProviderMethod = this.addMethod({
           name: 'getOrCreateProvider',
           static: true,
@@ -282,7 +335,7 @@ export abstract class HandlerFrameworkClass extends ClassType {
             summary: 'Returns a stack-level singleton for the custom resource provider.',
           },
         });
-        const _scope = getOrCreateProviderMethod.addParameter({
+        getOrCreateProviderMethod.addParameter({
           name: 'scope',
           type: CONSTRUCTS_MODULE.Construct,
         });
@@ -296,10 +349,15 @@ export abstract class HandlerFrameworkClass extends ClassType {
           optional: true,
         });
         getOrCreateProviderMethod.addBody(
-          stmt.constVar(expr.ident('id'), expr.directCode('`${uniqueid}CustomResourceProvider`')),
-          stmt.constVar(expr.ident('stack'), $T(CORE_MODULE.Stack).of(expr.directCode(_scope.spec.name))),
-          stmt.constVar(expr.ident('existing'), expr.directCode(`stack.node.tryFindChild(id) as ${this.type}`)),
-          stmt.ret(expr.directCode(`existing ?? new ${this.name}(stack, id, props)`)),
+          idStatement,
+          stackFromScopeStatement,
+          stmt.constVar(expr.ident('provider'), expr.directCode(`this.getProvider(scope, uniqueid) ?? new ${this.name}(stack, id, props)`)),
+          logContextKeyStatement,
+          stmt.constVar(expr.ident('logGroupMetadata'),
+            expr.directCode('stack.node.metadata.find(m => m.type === key)')),
+          stmt.if_(expr.directCode('logGroupMetadata?.data'))
+            .then(expr.directCode('provider.configureLambdaLogGroup(logGroupMetadata.data)')),
+          stmt.ret(expr.directCode('provider')),
         );
 
         const superProps = new ObjectLiteral([

packages/@aws-cdk-testing/framework-integ/test/aws-s3/test/integ.bucket-auto-delete-objects.ts

@@ -12,14 +12,37 @@ export class TestProvider extends CustomResourceProviderBase {
     return this.getOrCreateProvider(scope, uniqueid, props).serviceToken;
   }
 
+  /**
+   * Returns the stack-level singleton provider or undefined
+   */
+  public static getProvider(scope: Construct, uniqueid: string): TestProvider {
+    const id = `${uniqueid}CustomResourceProvider`;
+    const stack = Stack.of(scope);
+    return stack.node.tryFindChild(id) as TestProvider;
+  }
+
+  /**
+   * Set the log group to be used by the singleton provider
+   */
+  public static useLogGroup(scope: Construct, uniqueid: string, logGroupName: string): void {
+    const stack = Stack.of(scope);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    stack.node.addMetadata(key, logGroupName);
+    const existing = this.getProvider(scope, uniqueid);
+    if (existing) existing.configureLambdaLogGroup(logGroupName);
+  }
+
   /**
    * Returns a stack-level singleton for the custom resource provider.
    */
   public static getOrCreateProvider(scope: Construct, uniqueid: string, props?: CustomResourceProviderOptions): TestProvider {
     const id = `${uniqueid}CustomResourceProvider`;
     const stack = Stack.of(scope);
-    const existing = stack.node.tryFindChild(id) as TestProvider;
-    return existing ?? new TestProvider(stack, id, props);
+    const provider = this.getProvider(scope, uniqueid) ?? new TestProvider(stack, id, props);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    const logGroupMetadata = stack.node.metadata.find(m => m.type === key);
+    if (logGroupMetadata?.data) provider.configureLambdaLogGroup(logGroupMetadata.data);
+    return provider;
   }
 
   public constructor(scope: Construct, id: string, props?: CustomResourceProviderOptions) {

packages/@aws-cdk/custom-resource-handlers/lib/custom-resources-framework/classes.ts

@@ -11,14 +11,37 @@ export class TestProvider extends CustomResourceProviderBase {
     return this.getOrCreateProvider(scope, uniqueid, props).serviceToken;
   }
 
+  /**
+   * Returns the stack-level singleton provider or undefined
+   */
+  public static getProvider(scope: Construct, uniqueid: string): TestProvider {
+    const id = `${uniqueid}CustomResourceProvider`;
+    const stack = Stack.of(scope);
+    return stack.node.tryFindChild(id) as TestProvider;
+  }
+
+  /**
+   * Set the log group to be used by the singleton provider
+   */
+  public static useLogGroup(scope: Construct, uniqueid: string, logGroupName: string): void {
+    const stack = Stack.of(scope);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    stack.node.addMetadata(key, logGroupName);
+    const existing = this.getProvider(scope, uniqueid);
+    if (existing) existing.configureLambdaLogGroup(logGroupName);
+  }
+
   /**
    * Returns a stack-level singleton for the custom resource provider.
    */
   public static getOrCreateProvider(scope: Construct, uniqueid: string, props?: CustomResourceProviderOptions): TestProvider {
     const id = `${uniqueid}CustomResourceProvider`;
     const stack = Stack.of(scope);
-    const existing = stack.node.tryFindChild(id) as TestProvider;
-    return existing ?? new TestProvider(stack, id, props);
+    const provider = this.getProvider(scope, uniqueid) ?? new TestProvider(stack, id, props);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    const logGroupMetadata = stack.node.metadata.find(m => m.type === key);
+    if (logGroupMetadata?.data) provider.configureLambdaLogGroup(logGroupMetadata.data);
+    return provider;
   }
 
   public constructor(scope: Construct, id: string, props?: CustomResourceProviderOptions) {

packages/@aws-cdk/custom-resource-handlers/test/custom-resources-framework/expected/node-runtime/custom-resource-provider-core.ts

@@ -12,14 +12,37 @@ export class TestProvider extends CustomResourceProviderBase {
     return this.getOrCreateProvider(scope, uniqueid, props).serviceToken;
   }
 
+  /**
+   * Returns the stack-level singleton provider or undefined
+   */
+  public static getProvider(scope: Construct, uniqueid: string): TestProvider {
+    const id = `${uniqueid}CustomResourceProvider`;
+    const stack = Stack.of(scope);
+    return stack.node.tryFindChild(id) as TestProvider;
+  }
+
+  /**
+   * Set the log group to be used by the singleton provider
+   */
+  public static useLogGroup(scope: Construct, uniqueid: string, logGroupName: string): void {
+    const stack = Stack.of(scope);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    stack.node.addMetadata(key, logGroupName);
+    const existing = this.getProvider(scope, uniqueid);
+    if (existing) existing.configureLambdaLogGroup(logGroupName);
+  }
+
   /**
    * Returns a stack-level singleton for the custom resource provider.
    */
   public static getOrCreateProvider(scope: Construct, uniqueid: string, props?: CustomResourceProviderOptions): TestProvider {
     const id = `${uniqueid}CustomResourceProvider`;
     const stack = Stack.of(scope);
-    const existing = stack.node.tryFindChild(id) as TestProvider;
-    return existing ?? new TestProvider(stack, id, props);
+    const provider = this.getProvider(scope, uniqueid) ?? new TestProvider(stack, id, props);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    const logGroupMetadata = stack.node.metadata.find(m => m.type === key);
+    if (logGroupMetadata?.data) provider.configureLambdaLogGroup(logGroupMetadata.data);
+    return provider;
   }
 
   public constructor(scope: Construct, id: string, props?: CustomResourceProviderOptions) {

packages/@aws-cdk/custom-resource-handlers/test/custom-resources-framework/expected/node-runtime/custom-resource-provider.ts

@@ -11,14 +11,37 @@ export class TestProvider extends CustomResourceProviderBase {
     return this.getOrCreateProvider(scope, uniqueid, props).serviceToken;
   }
 
+  /**
+   * Returns the stack-level singleton provider or undefined
+   */
+  public static getProvider(scope: Construct, uniqueid: string): TestProvider {
+    const id = `${uniqueid}CustomResourceProvider`;
+    const stack = Stack.of(scope);
+    return stack.node.tryFindChild(id) as TestProvider;
+  }
+
+  /**
+   * Set the log group to be used by the singleton provider
+   */
+  public static useLogGroup(scope: Construct, uniqueid: string, logGroupName: string): void {
+    const stack = Stack.of(scope);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    stack.node.addMetadata(key, logGroupName);
+    const existing = this.getProvider(scope, uniqueid);
+    if (existing) existing.configureLambdaLogGroup(logGroupName);
+  }
+
   /**
    * Returns a stack-level singleton for the custom resource provider.
    */
   public static getOrCreateProvider(scope: Construct, uniqueid: string, props?: CustomResourceProviderOptions): TestProvider {
     const id = `${uniqueid}CustomResourceProvider`;
     const stack = Stack.of(scope);
-    const existing = stack.node.tryFindChild(id) as TestProvider;
-    return existing ?? new TestProvider(stack, id, props);
+    const provider = this.getProvider(scope, uniqueid) ?? new TestProvider(stack, id, props);
+    const key = `${uniqueid}CustomResourceLogGroup`;
+    const logGroupMetadata = stack.node.metadata.find(m => m.type === key);
+    if (logGroupMetadata?.data) provider.configureLambdaLogGroup(logGroupMetadata.data);
+    return provider;
   }
 
   public constructor(scope: Construct, id: string, props?: CustomResourceProviderOptions) {

packages/@aws-cdk/custom-resource-handlers/test/custom-resources-framework/expected/python-runtime/custom-resource-provider-core.ts

@@ -656,6 +656,23 @@ switching this to `false` in a CDK version _before_ `1.126.0` will lead to
 all objects in the bucket being deleted. Be sure to update your bucket resources
 by deploying with CDK version `1.126.0` or later **before** switching this value to `false`.
 
+Enabling `autoDeleteObjects` creates a stack-wide singleton Lambda that is responsible for deleting objects.
+To configure the lambda to use a different log group, use the `Bucket.setAutoDeleteObjectsLogGroup()` method:
+
+```ts
+import * as logs from 'aws-cdk-lib/aws-logs';
+
+const bucket = new s3.Bucket(this, 'MyTempFileBucket', {
+  removalPolicy: cdk.RemovalPolicy.DESTROY,
+  autoDeleteObjects: true,
+});
+
+s3.Bucket.setAutoDeleteObjectsLogGroup(this, new logs.LogGroup(this, 'MyLogGroup', {
+  logGroupName: 'MyLogGroup',
+  retention: logs.RetentionDays.FIVE_YEARS
+}))
+```
+
 ## Transfer Acceleration
 
 [Transfer Acceleration](https://docs.aws.amazon.com/AmazonS3/latest/userguide/transfer-acceleration.html) can be configured to enable fast, easy, and secure transfers of files over long distances:

packages/@aws-cdk/custom-resource-handlers/test/custom-resources-framework/expected/python-runtime/custom-resource-provider.ts

@@ -10,6 +10,7 @@ import { parseBucketArn, parseBucketName } from './util';
 import * as events from '../../aws-events';
 import * as iam from '../../aws-iam';
 import * as kms from '../../aws-kms';
+import * as logs from '../../aws-logs';
 import {
   CustomResource,
   Duration,
@@ -1466,6 +1467,9 @@ export interface BucketProps {
    *
    * Requires the `removalPolicy` to be set to `RemovalPolicy.DESTROY`.
    *
+   * A custom resource along with a provider lambda will be created for
+   * emptying the bucket.
+   *
    * **Warning** if you have deployed a bucket with `autoDeleteObjects: true`,
    * switching this to `false` in a CDK version *before* `1.126.0` will lead to
    * all objects in the bucket being deleted. Be sure to update your bucket resources
@@ -1882,6 +1886,16 @@ export class Bucket extends BucketBase {
     }
   }
 
+  /**
+   * Set the log group on the stack wide singleton AutoDeleteObjects provider lambda.
+   *
+   * @param stack the stack with the singleton AutoDeleteObjects provider lambda.
+   * @param logGroup the log group to use on the lambda.
+   */
+  public static setAutoDeleteObjectsLogGroup(stack: Stack, logGroup: logs.ILogGroup): void {
+    AutoDeleteObjectsProvider.useLogGroup(stack, AUTO_DELETE_OBJECTS_RESOURCE_TYPE, logGroup.logGroupName);
+  }
+
   public readonly bucketArn: string;
   public readonly bucketName: string;
   public readonly bucketDomainName: string;