Hello World

The Hello World function is a simple function that returns the string "Hello [name]!", where [name] is either the value provided in the name query parameter for a GET request or the value provided in the name field of the request body for a POST request.

The function uses the event and context parameters and logs them to the console. It handles both GET and POST requests and returns a JSON response with a message field containing the personalized greeting.

The source code for the function:

exports.handler = async (event, context) => {

  console.log({event}, {context});

  const {body, httpMethod, queryStringParameters} = event;

  let name = "World";

  // if method GET
  if (httpMethod === "GET") {
    name = (queryStringParameters || {}).name || "World";
  }
  if (httpMethod === "POST") {
    name = (JSON.parse(body) || {}).name || "World";
  }

  return {
    statusCode: 200,
    body: JSON.stringify({
      message: `Hello ${name}!`,
    }),
  };

};

Check the source code on GitHub.

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