AWS Lambda

Files: Dockerfile, handler.py, template.yaml, samconfig.toml

Prerequisites

• AWS CLI configured (aws configure)
• AWS SAM CLI (brew install aws-sam-cli)
• Docker

Deploy

# Create ECR repository (first time only)
aws ecr create-repository --repository-name <project_name> --region us-east-1

sam build
sam deploy

SAM builds the Docker image, pushes to ECR, and creates the Lambda function.

Invoke

sam remote invoke

View logs

sam logs --stack-name <project_name> --tail

Important

• Do not rename handler.py or the handler() function — the Dockerfile CMD is handler.handler
• Do not rename workflow.py or the main() function — handler.py imports it
• The samconfig.toml has the stack name, region, and ECR repository pre-configured from cookiecutter
• To change the schedule or add triggers, edit template.yaml (see lambda-scheduled template)