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AWS Cloud Development Kit (CDK) for LocalStack

This project provides a thin wrapper script cdklocal for using the AWS CDK library against local APIs provided by LocalStack.

Note: This project replaces the old (deprecated) repo which was a fork of the AWS CDK repo. Instead of forking the repo and applying changes, we now simply provide a simple wrapper script cdklocal which applies runtime patching. The advantage of the new approach is that you should be able to use arbitrary CDK versions under the cover.

Quick Installation

The cdklocal command line is published as an npm library:

$ npm install aws-cdk-local aws-cdk
...
$ cdklocal --version
1.65.2

Note: Starting with version 1.65.2, the dependency aws-cdk needs to be installed manually (to decouple the two libraries, and allow using arbitrary versions of aws-cdk under the covers).

Configurations

The following environment variables can be configured:

  • EDGE_PORT: Port under which LocalStack edge service is accessible (default: 4566)
  • LOCALSTACK_HOSTNAME: Target host under which LocalStack edge service is accessible (default: localhost)

Deploying a Sample App

The CDK command line ships with a sample app generator to run a quick test for getting started:

$ mkdir /tmp/test; cd /tmp/test
$ cdklocal init sample-app --language=javascript
...

Make sure that LocalStack is installed and started up with the required services:

$ SERVICES=serverless,sqs,sns localstack start

Then deploy the sample app against the local APIs via the cdklocal command line:

$ cdklocal deploy
...
Do you wish to deploy these changes (y/n)? y
...
Stack ARN:
arn:aws:cloudformation:us-east-1:000000000000:stack/TestStack/e3debc0a-311e-4968-8230-ed78f89cb614

Once the deployment is done, you can inspect the created resources via the awslocal command line:

$ awslocal sns list-topics
{
    "Topics": [
        {
            "TopicArn": "arn:aws:sns:us-east-1:000000000000:TestStack-TestTopic339EC197-79F43WWCCS4Z"
        }
    ]
}

Change Log

  • 1.65.2: Patch missing getPromise() in forceCredentialRetrieval; remove aws-cdk from npm dependencies
  • 1.65.1: Override BucketURL to use path style addressing
  • 1.65.0: Initial release

License

The AWS CDK is distributed under the Apache License, Version 2.0.