chore: add example of looking up availability zones

examples/examples_nodejs_test.go

@@ -325,6 +325,22 @@ func TestAPIWebsocketLambdaDynamoDB(t *testing.T) {
 	integration.ProgramTest(t, &test)
 }
 
+func TestLookupAzs(t *testing.T) {
+	test := getJSBaseOptions(t).
+		With(integration.ProgramTestOptions{
+			Dir: filepath.Join(getCwd(t), "lookup-azs"),
+			ExtraRuntimeValidation: func(t *testing.T, stack integration.RuntimeValidationStackInfo) {
+				t.Helper()
+				t.Logf("Outputs: %v", stack.Outputs)
+				azs := stack.Outputs["azs"].([]interface{})
+				// by default the CDK will use 2 AZs so this makes sure our logic is working
+				assert.Lenf(t, azs, 3, "Expected 2 AZs, got %d", len(azs))
+			},
+		})
+
+	integration.ProgramTest(t, &test)
+}
+
 func getJSBaseOptions(t *testing.T) integration.ProgramTestOptions {
 	base := getBaseOptions(t)
 	baseJS := base.With(integration.ProgramTestOptions{

examples/lookup-azs/Pulumi.yaml

@@ -0,0 +1,3 @@
+name: pulumi-aws-cdk-lookups-azs
+runtime: nodejs
+description: lookup azs example for CDK

examples/lookup-azs/index.ts

@@ -0,0 +1,41 @@
+import * as pulumicdk from '@pulumi/cdk';
+import * as pulumi from '@pulumi/pulumi';
+import * as ec2 from 'aws-cdk-lib/aws-ec2';
+import { Fn } from 'aws-cdk-lib';
+import { Output } from '@pulumi/pulumi';
+
+const config = new pulumi.Config();
+const prefix = config.get('prefix') ?? pulumi.getStack();
+class LookupAzsStack extends pulumicdk.Stack {
+    public readonly azs: Output<string[]>;
+    constructor(app: pulumicdk.App, id: string) {
+        super(app, id, {
+            props: { env: app.env },
+        });
+
+        const vpc = new ec2.Vpc(this, 'MyVpc', { maxAzs: 3 });
+        this.azs = this.asOutput(vpc.availabilityZones);
+    }
+
+    // You can override the availabilityZones property to perform a lookup.
+    // Here I have specified that I want 3 availability zones. This uses Intrinsics, which
+    // behind the scenes are backed by Pulumi functions (e.g. aws_native.getAzs()).
+    // This allows us to get around the limitation of not being able to use Output values here.
+    get availabilityZones(): string[] {
+        return [Fn.select(0, Fn.getAzs()), Fn.select(1, Fn.getAzs()), Fn.select(2, Fn.getAzs())];
+    }
+}
+
+class MyApp extends pulumicdk.App {
+    constructor() {
+        super('app', (scope: pulumicdk.App): pulumicdk.AppOutputs => {
+            const stack = new LookupAzsStack(scope, `${prefix}-azs`);
+            return {
+                azs: stack.azs,
+            };
+        });
+    }
+}
+
+const app = new MyApp();
+export const azs = app.outputs['azs'];

examples/lookup-azs/package.json

@@ -0,0 +1,18 @@
+{
+    "name": "pulumi-aws-cdk",
+    "devDependencies": {
+        "@types/node": "^10.0.0"
+    },
+    "dependencies": {
+        "@pulumi/aws": "^6.0.0",
+        "@pulumi/aws-native": "^1.9.0",
+        "@pulumi/cdk": "^0.5.0",
+        "@pulumi/docker-build": "^0.0.7",
+        "@pulumi/pulumi": "^3.0.0",
+        "@types/express": "^5.0.0",
+        "aws-cdk-lib": "2.156.0",
+        "constructs": "10.3.0",
+        "esbuild": "^0.24.0",
+        "express": "^4.21.1"
+    }
+}

examples/lookup-azs/tsconfig.json

@@ -0,0 +1,18 @@
+{
+    "compilerOptions": {
+        "strict": true,
+        "outDir": "bin",
+        "target": "es2016",
+        "module": "commonjs",
+        "moduleResolution": "node",
+        "sourceMap": true,
+        "experimentalDecorators": true,
+        "pretty": true,
+        "noFallthroughCasesInSwitch": true,
+        "noImplicitReturns": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.ts"
+    ]
+}