go-lambda-cdk

Go Lambda (CDK) example

Sample project deploying a Go-based Restate service to AWS Lambda using the AWS Cloud Development Kit (CDK). The stack uses the Restate CDK constructs library to register the service with a Restate Cloud environment.

For more information on CDK, please see Getting started with the AWS CDK.

• CDK app entry point go-lambda-cdk.ts
• CDK stack consisting of a Lambda function and providing Restate service registration
• Go Lambda handler - based on go template

Download the example

• Via the CLI:

  restate example go-lambda-cdk && cd go-lambda-cdk

• Via git clone:

  git clone [email protected]:restatedev/examples.git
  cd examples/templates/go-lambda-cdk

• Via wget:

  wget https://github.com/restatedev/examples/releases/latest/download/go-lambda-cdk.zip && unzip go-lambda-cdk.zip -d go-lambda-cdk && rm go-lambda-cdk.zip

Deploy

Pre-requisites:

• npm
• Go >= 1.21
• AWS account, bootstrapped for CDK use
• valid AWS credentials with sufficient privileges to create the necessary resources
• an existing Restate Cloud environment (environment id + API key)

Install npm dependencies:

npm install

To deploy the stack, export the Restate Cloud environment id and admin API key, and run cdk deploy:

export RESTATE_ENV_ID=env_... RESTATE_API_KEY=key_...
npx cdk deploy

The stack output will print out the Restate server ingress URL.

Test

You can send a test request to the Restate ingress endpoint to call the newly deployed service:

curl -k ${restateIngressUrl}/Greeter/Greet \
  -H "Authorization: Bearer $RESTATE_API_KEY" \
  -H 'content-type: application/json' -d '"Restate"'

Useful commands

• npm run build compile the Lambda handler and synthesize CDK deployment artifacts
• npm run deploy perform a CDK deployment
• npm run destroy delete the stack and all its resources