callback is not working..

[singamcet]

`
var winston = require('winston'),
WinstonCloudWatch = require('winston-cloudwatch');

exports.handler = (event, context, callback) => {
winston.add(WinstonCloudWatch, {
logGroupName: 'testing',
logStreamName: 'first'
});
var error = new Error('we are doooooomed!');
winston.error('error', error)

callback(null, "success")
};

`
The callback is not working, Lambda just shows the time out error, What is the solution of thiss issue ???

thanks & regards

[lazywithclass]

What are you trying to achieve? I am not sure what you mean with "Lambda just shows the time out error", are you saying you're running this into AWS Lambda and getting a timeout, what's your use case?

I slightly changed this code and run it as so

var winston = require('winston'),
      WinstonCloudWatch = require('winston-cloudwatch');

handler = (event, context, callback) => {
  winston.add(WinstonCloudWatch, {
    logGroupName: 'testing',
    logStreamName: 'first'
  });
  var error = new Error('we are doooooomed!');
  winston.error('error', error)

  callback(null, "success")
};

handler(null, null, () => console.log('hello'))

which prints

error: error Error: we are doooooomed!
at handler (/private/tmp/tmp.js:9:14)
at Object. (/private/tmp/tmp.js:17:1)
at Module._compile (module.js:624:30)
at Object.Module._extensions..js (module.js:635:10)
at Module.load (module.js:545:32)
at tryModuleLoad (module.js:508:12)
at Function.Module._load (module.js:500:3)
at Function.Module.runMain (module.js:665:10)
at startup (bootstrap_node.js:187:16)
at bootstrap_node.js:607:3
hello

I need more informations from your side if you need help with this issue.

[owaisdrabu]

Hi @lazywithclass I'm having this similar issue, getting timeout error in aws lambda. would be able to check what's wrong

logger.js file

const winston = require('winston'),
    WinstonCloudWatch = require('winston-cloudwatch');
 const logger = winston.createLogger({
  format: winston.format.json(),
  transports: [
    new winston.transports.Console({
      timestamp: true,
      colorize: true,
      level: "info",
      format: winston.format.combine(
        winston.format.colorize({ message: true })
      ),
    }),
  ],
});

let self = logger.add(
  new WinstonCloudWatch({
    name: "log",
    logGroupName: "EventLog",
    logStreamName: "Stream",
    createLogGroup: true,
    createLogStream: true,
    awsOptions: {
      region: xxxxx,
      credentials: {
        accessKeyId: xxxxx,
        secretAccessKey: xxxxxx,
      },
    },
    messageFormatter: ({ level, message, response }) => {
      return `[${level}] : ${message} : ${JSON.stringify(response)}`;
    },
  })
);

let transport = self.transports.find((t) => t.name === "log");
transport.kthxbye(() => console.log("flushed"));

Index,js file

module.exports.someFunction = async (event, context, callback) => {
  try {
    let result = await xyz();
    cloudwatch.logger.log("info", "-", { response: result });
    callback(null, result);
  } catch (err) {
    console.log("catch");
  }
};