Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
AWS Lambda Example
const AWS = require('aws-sdk');
const dynamo = new AWS.DynamoDB.DocumentClient();
/**
* Demonstrates a simple HTTP endpoint using API Gateway. You have full
* access to the request and response payload, including headers and
* status code.
*
* To scan a DynamoDB table, make a GET request with the TableName as a
* query string parameter. To put, update, or delete an item, make a POST,
* PUT, or DELETE request respectively, passing in the payload to the
* DynamoDB API as a JSON body.
*/
exports.handler = async (event, context) => {
//console.log('Received event:', JSON.stringify(event, null, 2));
let body;
let statusCode = '200';
const headers = {
'Content-Type': 'application/json',
};
try {
switch (event.httpMethod) {
case 'DELETE':
body = await dynamo.delete(JSON.parse(event.body)).promise();
break;
case 'GET':
body = await dynamo.scan({ TableName: event.queryStringParameters.TableName }).promise();
break;
case 'POST':
body = await dynamo.put(JSON.parse(event.body)).promise();
break;
case 'PUT':
body = await dynamo.update(JSON.parse(event.body)).promise();
break;
default:
throw new Error(`Unsupported method "${event.httpMethod}"`);
}
} catch (err) {
statusCode = '400';
body = err.message;
} finally {
body = JSON.stringify(body);
}
return {
statusCode,
body,
headers,
};
};
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment