Bugfix for issue #24561

packages/aws-cdk-lib/aws-servicecatalog/lib/product-stack.ts

@@ -1,4 +1,3 @@
-import * as crypto from 'crypto';
 import * as fs from 'fs';
 import * as path from 'path';
 import { Construct } from 'constructs';
@@ -7,6 +6,7 @@ import { ProductStackHistory } from './product-stack-history';
 import { IBucket } from '../../aws-s3';
 import { ServerSideEncryption } from '../../aws-s3-deployment';
 import * as cdk from '../../core';
+import { fingerprint } from '../../core/lib/fs/fingerprint';
 
 /**
  * Product stack props.
@@ -144,7 +144,9 @@ export class ProductStack extends cdk.Stack {
    */
   public _synthesizeTemplate(session: cdk.ISynthesisSession): void {
     const cfn = JSON.stringify(this._toCloudFormation(), undefined, 2);
-    const templateHash = crypto.createHash('sha256').update(cfn).digest('hex');
+    const templateFilePath = path.join(session.assembly.outdir, this.templateFile);
+    fs.writeFileSync(templateFilePath, cfn);
+    const templateHash = fingerprint(templateFilePath);
 
     this._templateUrl = this._parentStack.synthesizer.addFileAsset({
       packaging: cdk.FileAssetPackaging.FILE,
@@ -155,8 +157,6 @@ export class ProductStack extends cdk.Stack {
     if (this._parentProductStackHistory) {
       this._parentProductStackHistory._writeTemplateToSnapshot(cfn);
     }
-
-    fs.writeFileSync(path.join(session.assembly.outdir, this.templateFile), cfn);
   }
 }
 

packages/aws-cdk-lib/aws-servicecatalog/test/product-stack.test.ts

@@ -1,4 +1,5 @@
 import * as fs from 'fs';
+import * as os from 'os';
 import * as path from 'path';
 import { Construct } from 'constructs';
 import { Match, Template } from '../../assertions';
@@ -500,4 +501,47 @@ class ProductWithAnAsset extends servicecatalog.ProductStack {
       handler: 'index.handler',
     });
   }
-}
+}
+
+test('Adding new version to product stack history', () => {
+  const tmpdir = fs.mkdtempSync(path.join(os.tmpdir(), 'cdk-product-stack-snapshots'));
+  const createProduct = (currentVersion: string, previousVersion?: string) => {
+    const app = new cdk.App();
+    const mainStack = new cdk.Stack(app, 'MainStack');
+    const productStack = new servicecatalog.ProductStack(mainStack, 'ProductStack');
+    new s3.Bucket(productStack, `Bucket${currentVersion}`);
+    const productStackHistory = new servicecatalog.ProductStackHistory(mainStack, 'ProductStackHistory', {
+      currentVersionLocked: true,
+      currentVersionName: currentVersion,
+      productStack,
+      directory: tmpdir,
+    });
+    const productVersions = new Array<servicecatalog.CloudFormationProductVersion>();
+    if (previousVersion) {
+      productVersions.push(productStackHistory.versionFromSnapshot(previousVersion));
+    }
+    productVersions.push(productStackHistory.currentVersion());
+    const product = new servicecatalog.CloudFormationProduct(mainStack, 'Product', {
+      productName: 'Product',
+      owner: 'Owner',
+      productVersions,
+    });
+    app.synth();
+    const template = Template.fromStack(mainStack);
+    const productsInTemplate = template.findResources('AWS::ServiceCatalog::CloudFormationProduct');
+    expect(Object.values(productsInTemplate).length).toEqual(1);
+    return Object.values(productsInTemplate)[0]
+      .Properties
+      .ProvisioningArtifactParameters[0]
+      .Info
+      .LoadTemplateFromURL['Fn::Sub']
+      .replace(/^.*\//, '');
+  };
+  try {
+    const assetHash1 = createProduct('V1');
+    const assetHash2 = createProduct('V2', 'V1');
+    expect(assetHash1).toEqual(assetHash2);
+  } finally {
+    fs.rmSync(tmpdir, { recursive: true });
+  }
+});