aws-lambda

APIGatewayProxyHandler

This feature allows you to define a Lambda function that handles API Gateway proxy events. The code sample demonstrates a simple Lambda function that returns a JSON response with a 'Hello, world!' message.

const { APIGatewayProxyHandler } = require('aws-lambda');

const handler: APIGatewayProxyHandler = async (event, context) => {
  return {
    statusCode: 200,
    body: JSON.stringify({ message: 'Hello, world!' })
  };
};

exports.handler = handler;

S3Handler

This feature allows you to define a Lambda function that handles S3 events. The code sample demonstrates a Lambda function that logs the bucket name and object key for each record in the S3 event.

const { S3Handler } = require('aws-lambda');

const handler: S3Handler = async (event, context) => {
  for (const record of event.Records) {
    console.log(`Bucket: ${record.s3.bucket.name}, Key: ${record.s3.object.key}`);
  }
};

exports.handler = handler;

DynamoDBStreamHandler

This feature allows you to define a Lambda function that handles DynamoDB stream events. The code sample demonstrates a Lambda function that logs the event ID and event name for each record in the DynamoDB stream event.

const { DynamoDBStreamHandler } = require('aws-lambda');

const handler: DynamoDBStreamHandler = async (event, context) => {
  for (const record of event.Records) {
    console.log(`Event ID: ${record.eventID}, Event Name: ${record.eventName}`);
  }
};

exports.handler = handler;