feat: use aspects to configure deletion policy

aws/aspects/ConfigureDeletionPolicy.ts

@@ -0,0 +1,12 @@
+import { IAspect, RemovalPolicy, aws_s3 } from 'aws-cdk-lib'
+import { IConstruct } from 'constructs'
+
+export class ConfigureDeletionPolicy implements IAspect {
+  public visit(node: IConstruct): void {
+    if (!(node instanceof aws_s3.CfnBucket)) {
+      return
+    }
+
+    node.applyRemovalPolicy(RemovalPolicy.RETAIN)
+  }
+}

aws/aspects/HTTPApiGatewayLogs.ts

@@ -1,4 +1,4 @@
-import { IAspect, Tags, aws_apigatewayv2, aws_iam, aws_logs } from 'aws-cdk-lib'
+import { IAspect, aws_apigatewayv2, aws_iam, aws_logs } from 'aws-cdk-lib'
 import { RetentionDays } from 'aws-cdk-lib/aws-logs'
 import { Construct, IConstruct } from 'constructs'
 
@@ -11,7 +11,6 @@ export class HTTPApiGatewayLogs implements IAspect {
     }
 
     const scope = new Construct(node.node.scope!, 'logs')
-    Tags.of(scope).add('custom:aspect', HTTPApiGatewayLogs.name)
 
     const group = new aws_logs.LogGroup(scope, `group`, {
       logGroupName: `/${node.node.scope!}`,

aws/stacks/Observability.ts

@@ -1,5 +1,6 @@
 import { Aspects, Stack, aws_s3 } from 'aws-cdk-lib'
 import { Construct, IConstruct } from 'constructs'
+import { ConfigureDeletionPolicy } from '../aspects/ConfigureDeletionPolicy'
 import { EnableLambdaXRayTracing } from '../aspects/EnableLambdaXRayTracing'
 import { HTTPApiGatewayLogs } from '../aspects/HTTPApiGatewayLogs'
 import { S3BucketAccessLogs } from '../aspects/S3BucketAccessLogs'
@@ -18,9 +19,14 @@ export class ObservabilityStack extends Stack {
       this.enableS3AccessLogs(node)
       this.enableLambdaXRayTracing(node)
       this.enableHttpApiGatewayLogs(node)
+      this.configureDeletionPolicy(node)
     })
   }
 
+  public configureDeletionPolicy(node: Construct) {
+    Aspects.of(node).add(new ConfigureDeletionPolicy())
+  }
+
   public enableHttpApiGatewayLogs(node: Construct) {
     Aspects.of(node).add(new HTTPApiGatewayLogs())
   }