AWS Lambda Adapter supports AWS Lambda function triggered by Amazon API Gateway Rest API, Http API(v2 event format), and Application Load Balancer. Lambda Adapter converts incoming events to http requests and send to web application, and convert the http response back to lambda event response.
Lambda Adapter is a Lambda Extension (since 0.2.0). When the docker image is running inside AWS Lambda Service, Lambda will automatic start the Adapter and the runtime process. When running outside of Lambda, Lambda Adapter does not run at all. This allows developers to package their web application as a container image and run it on AWS Lambda, AWS Fargate and Amazon EC2 without changing code.
After Lambda Adapter launch the application, it will perform readiness check on http://localhost:8080/ every 10ms. It will start lambda runtime client after receiving 200 response from the application and forward requests to http://localhost:8080.
