Useful if you want more control over the API between the init and LocalStack (e.g. for error responses)

1. Build init via make build

   • On ARM hosts, use make ARCH=arm64 build because debugging only works with native containers.

2. Start LocalStack with the following flags:

   LAMBDA_INIT_BIN_PATH=/Users/joe/Projects/LocalStack/lambda-runtime-init/custom-tests/init/var/rapid/init
   LAMBDA_INIT_BOOTSTRAP_PATH=/Users/joe/Projects/LocalStack/lambda-runtime-init/custom-tests/init/var/rapid/entrypoint.sh
   LAMBDA_INIT_DEBUG=1
   LAMBDA_INIT_DELVE_PATH=/Users/joe/Projects/LocalStack/lambda-runtime-init/custom-tests/init/var/rapid/dlv
   LAMBDA_INIT_DELVE_PORT=40000
   LAMBDA_RUNTIME_ENVIRONMENT_TIMEOUT=3600
   TEST_DISABLE_RETRIES_AND_TIMEOUTS=1
   

   • LAMBDA_INIT_DEBUG=1|0 enables or disables RIE copying and debugging.
   • LAMBDA_REMOVE_CONTAINERS=0 keeps exited containers
   • Adjust the path to lambda-runtime-init accordingly

3. Start Delve debugger and connect to localhost:40000

Within create_lambda_function:

• Increase the timeout=3600
• On ARM hosts, debugging only works with ARM containers. Use LAMBDA_IGNORE_ARCHITECTURE=1 or explicitly configure the Lambda function with Architectures=[Architecture.arm64]