feat(type-safe-api): allow customized output spec bucket (aws#812)

packages/type-safe-api/src/construct/type-safe-rest-api.ts

@@ -27,6 +27,7 @@ import {
  Runtime,
 } from "aws-cdk-lib/aws-lambda";
 import { LogGroup } from "aws-cdk-lib/aws-logs";
+import { IBucket } from "aws-cdk-lib/aws-s3";
 import { Asset } from "aws-cdk-lib/aws-s3-assets";
 import {
  CfnIPSet,
@@ -77,6 +78,12 @@ export interface TypeSafeRestApiProps
  * @default - Compression is disabled.
  */
  readonly minCompressionSize?: Size;
+
+ /**
+ * By default, the spec is prepared and outputted into the CDK assets bucket. If this is undesired,
+ * use this option to specify the output bucket.
+ */
+ readonly outputSpecBucket?: IBucket;
 }
 
 /**
@@ -113,13 +120,16 @@ export class TypeSafeRestApi extends Construct {
  operationLookup,
  defaultAuthorizer,
  corsOptions,
+ outputSpecBucket,
  ...options
  } = props;
 
  // Upload the spec to s3 as an asset
  const inputSpecAsset = new Asset(this, "InputSpec", {
  path: specPath,
  });
+
+ const prepareSpecOutputBucket = outputSpecBucket ?? inputSpecAsset.bucket;
  // We'll output the prepared spec in the same asset bucket
  const preparedSpecOutputKeyPrefix = `${inputSpecAsset.s3ObjectKey}-prepared`;
 
@@ -165,7 +175,7 @@ export class TypeSafeRestApi extends Construct {
  resources: [
  // The output file will include a hash of the prepared spec, which is not known until deploy time since
  // tokens must be resolved
- inputSpecAsset.bucket.arnForObjects(
+ prepareSpecOutputBucket.arnForObjects(
  `${preparedSpecOutputKeyPrefix}/*`
  ),
  ],
@@ -340,7 +350,7 @@ export class TypeSafeRestApi extends Construct {
  key: inputSpecAsset.s3ObjectKey,
  },
  outputSpecLocation: {
- bucket: inputSpecAsset.bucket.bucketName,
+ bucket: prepareSpecOutputBucket.bucketName,
  key: preparedSpecOutputKeyPrefix,
  },
  ...prepareSpecOptions,
@@ -361,7 +371,7 @@ export class TypeSafeRestApi extends Construct {
  apiDefinition: this.node.tryGetContext("type-safe-api-local")
  ? ApiDefinition.fromInline(this.extendedApiSpecification)
  : ApiDefinition.fromBucket(
- inputSpecAsset.bucket,
+ prepareSpecOutputBucket,
  prepareSpecCustomResource.getAttString("outputSpecKey")
  ),
  deployOptions: {