chore(layer): fix bundling and e2e tests by manually setting hash of asset (#1116)

Co-authored-by: Florian Chazal <[email protected]>

Author: flochaz

Diff for: layer-publisher/package-lock.json

@@ -30,6 +30,7 @@
     "aws-cdk-lib": "2.25.0",
     "constructs": "^10.0.0",
     "if-node-version": "^1.1.1",
-    "source-map-support": "^0.5.16"
+    "source-map-support": "^0.5.16",
+    "ts-md5": "^1.3.1"
   }
 }

Diff for: layer-publisher/package.json

@@ -2,6 +2,7 @@ import * as path from 'path';
 import { aws_lambda as lambda } from 'aws-cdk-lib';
 import { Construct } from 'constructs';
 import { execSync } from 'child_process';
+import { Md5 } from 'ts-md5';
 
 export interface PowerToolsTypeScriptLayerProps {
   /**
@@ -17,10 +18,28 @@ export interface PowerToolsTypeScriptLayerProps {
 
 export class PowerToolsTypeScriptLayer extends lambda.LayerVersion {
   public constructor(scope: Construct, id: string, props?: PowerToolsTypeScriptLayerProps) {
+    const version = props?.version ?? 'latest';
+    console.log(`publishing layer ${props?.layerVersionName} version : ${version}`);
+
+    const commands = [
+      'mkdir nodejs',
+      'cd nodejs',
+      'npm init -y',
+      `npm install --save \
+        @aws-lambda-powertools/commons@${version} \
+        @aws-lambda-powertools/logger@${version} \
+        @aws-lambda-powertools/metrics@${version} \
+        @aws-lambda-powertools/tracer@${version}`,
+      'rm package.json package-lock.json',
+    ];
+    const commandJoined = commands.join(' && ');
+
     super(scope, id, {
       layerVersionName: props?.layerVersionName,
+      description: `Lambda Powertools for TypeScript version ${props?.version}`,
       compatibleRuntimes: [ lambda.Runtime.NODEJS_12_X, lambda.Runtime.NODEJS_14_X, lambda.Runtime.NODEJS_16_X ],
       code: lambda.Code.fromAsset(path.join(__dirname, '.'), {
+        assetHash: Md5.hashStr(commandJoined),
         bundling: {
           image: lambda.Runtime.NODEJS_12_X.bundlingImage,
           local: {
@@ -31,21 +50,7 @@ export class PowerToolsTypeScriptLayer extends lambda.LayerVersion {
                 return false;
               }
 
-              const commands = [
-                'mkdir nodejs && cd nodejs',
-                'npm init -y',
-                `npm install @aws-lambda-powertools/commons@${
-                  props?.version ?? 'latest'
-                } @aws-lambda-powertools/logger@${props?.version ?? 'latest'} @aws-lambda-powertools/metrics@${
-                  props?.version ?? 'latest'
-                } @aws-lambda-powertools/tracer@${props?.version ?? 'latest'}`,
-                'rm package.json package-lock.json',
-                'cd ..',
-                `cp -a nodejs ${outputDir}`,
-                `rm -rf nodejs`,
-              ];
-
-              execSync(commands.join(' && '));
+              execSync(commandJoined, { cwd: outputDir });
 
               return true;
             },

Diff for: layer-publisher/src/powertools-typescript-layer.ts

@@ -31,7 +31,7 @@ exports.handler = function (_event: never, _ctx: unknown): void {
 
     if (packageJSON.version != process.env.POWERTOOLS_PACKAGE_VERSION) {
       throw new Error(
-        `Package version mismatch: \${packageJSON.version} != \${process.env.POWERTOOLS_PACKAGE_VERSION}`
+        `Package version mismatch: ${packageJSON.version} != ${process.env.POWERTOOLS_PACKAGE_VERSION}`
       );
     }
   } catch (error) {

Diff for: layer-publisher/tests/e2e/happy-case.test.lambda.ts

@@ -32,8 +32,9 @@ Object {
           "S3Bucket": Object {
             "Fn::Sub": "cdk-hnb659fds-assets-\${AWS::AccountId}-\${AWS::Region}",
           },
-          "S3Key": "dfbb723532549b2040a663602bbe51ab6b3f16dfd063eafc5bbd7e64b13f997d.zip",
+          "S3Key": "c2f621503b147cecccf2e6cc6df420a8f11ee29ae042d2c1f523cf5db3f47ca2.zip",
         },
+        "Description": "Lambda Powertools for TypeScript version 1.0.1",
         "LayerName": "AWSLambdaPowertoolsTypeScript",
       },
       "Type": "AWS::Lambda::LayerVersion",