invoke aws lambda from another lambda asynchronously

Question

I need to invoke aws lambda from another lambda asynchronously. i have a working code for synchronous calls.

exports.handler = (event, context, callback) =&g         


        

Answer 1

That's how I use in Express.js

var express = require("express");
var router = express.Router();

const asyncMiddleware = fn =>
  (req, res, next) => {
    Promise.resolve(fn(req, res, next))
      .catch(next);
  };

const invokeLambda = async (params) => {
  const data = await lambda.invoke(params).promise();
  return JSON.parse(data.Payload);
}


router.get('/test', asyncMiddleware(async (req, res, next) => {
  const params = {
    FunctionName: SOMETHING_LAMBDA_ARN,
    Payload: JSON.stringify(req.body)
  };
  const result = await invokeLambda(params);
  res.send(result);
}));