apig-wsgi

import json from apig_wsgi import APIGatewayWSGI, APIGatewayEventType # A simple WSGI application function def my_wsgi_app(environ, start_response): status = '200 OK' headers = [('Content-type', 'application/json')] start_response(status, headers) response_body = { "message": "Hello from WSGI on Lambda!", "path": environ.get('PATH_INFO', '/'), "method": environ.get('REQUEST_METHOD', 'GET'), "query_string": environ.get('QUERY_STRING', '') } return [json.dumps(response_body).encode('utf-8')] # Instantiate the APIGatewayWSGI handler # Use APIGatewayEventType.API_GATEWAY_V1 for REST API (default if omitted) # Use APIGatewayEventType.API_GATEWAY_V2 for HTTP API # Use APIGatewayEventType.ALB for Application Load Balancer apig_wsgi_handler = APIGatewayWSGI(my_wsgi_app, gateway_type=APIGatewayEventType.API_GATEWAY_V1) # This is the standard AWS Lambda handler entry point def lambda_handler(event, context): print(f"Received Lambda event: {json.dumps(event)}") response = apig_wsgi_handler(event, context) print(f"Returning Lambda response: {json.dumps(response)}") return response # Example of how you would test this locally or simulate an event if __name__ == "__main__": # Simulate an API Gateway V1 (REST API) GET event mock_event_v1 = { "resource": "/hello", "path": "/hello", "httpMethod": "GET", "headers": {"Accept": "*/*", "User-Agent": "test-client"}, "queryStringParameters": {"name": "Registry"}, "requestContext": {"resourceId": "xxx", "apiId": "yyy", "resourcePath": "/hello", "httpMethod": "GET", "requestId": "uuid", "identity": {"sourceIp": "127.0.0.1"}, "path": "/hello"}, "body": None, "isBase64Encoded": False } mock_context = {} print("--- Testing API Gateway V1 event ---") lambda_response = lambda_handler(mock_event_v1, mock_context) print("\nSimulated API Gateway V1 Lambda Response:") print(json.dumps(lambda_response, indent=2))