Sentry on AWS lambda in nodejs doesn't send exception

Question

I'm trying to configure sentry on AWS Lambda (nodejs 8.10) but the exceptions are not sent to Sentry. I'm the feeling that is a issue of timing: the lambda is terminated before the data are sent to sentry.

Which is the right way to integrate sentry on AWS Lambda?

Thank you!

score 12 · Accepted Answer · edited Sep 24 '20 at 10:12

12

Update: Sentry automatically reports exceptions on Node/Lambda. see docs

You have to use the function flush which makes sure all events that are currently queued up will be sent:

Sentry.captureException(new Error('test'));
await Sentry.flush();

http://getsentry.github.io/sentry-javascript/modules/node.html#flush

edited Sep 24 '20 at 10:12

ajs

3
3

answered Feb 17 '19 at 22:08

HazA

1,274
12
17

This will effect the performance of lambda – Himanshu Joshi Jun 28 '22 at 06:35
@HimanshuJoshi How? if the server has returned the exception then it's fine to log it at the same time. – RollerCosta Sep 27 '22 at 13:29

Amar Vasekar · Answer 2 · 2020-06-11T16:41:48.303

Install the Sentry module

npm install @sentry/node

See the bellow example to configure AWS Lambda function with Sentry.

      // Import the Sentry module.
      const Sentry = require("@sentry/node");
      // Configure the Sentry SDK.
      Sentry.init({
        dsn: "your dsn",
      });

      exports.handler = function (event, context) {
        try {
          textFunctionCall(); // Call undefined function.
        } catch (e) {
          Sentry.captureException(e); // using this function exception captured in Sentry dashboard.
          Sentry.flush(2000);
        }

        const response = {
          statusCode: 200,
          body: "Hello, exception captured",
        };

       return response;
      };

https://docs.sentry.io/platforms/node/serverless/#aws-lambda

Still not Capturing error in Sentry, then install the bellow node module these are the dependency.

npm install lru-cache
npm  install lru_map
npm install tslib

score 1 · Answer 3 · answered Jan 16 '20 at 09:52

Install sentry/node

npm i @sentry/node

Add this code in the top of your lambda

const Sentry = require("@sentry/node");
Sentry.init({
  dsn: "https://0dc9558ffb934657b6c3b97182b4338d@sentry.io/182963" // your_dsn_key_here
});

Use sentry object

 try {
   //Logic here
  } catch (error) {
    Sentry.captureException("Error on getLogsById");
  }

Himanshu Joshi · Answer 4 · 2022-06-28T09:26:57.687

I try to work on this and got a solution using already existing function

Create file name sentry-lib.js and add below code

 const Sentry = require("@sentry/node");
    
    // Importing @sentry/tracing patches the global hub for tracing to work.
    const SentryTracing = require("@sentry/tracing");
    let transaction = null;
    let SentryInstance = null;
   export class SentryLib {
    
     constructor(){
           Sentry.init({
             dsn: process.env.SENTRY_DSN,
             tracesSampleRate: 1.0,
            });
      }

    startLogging(){
       transaction = Sentry.startTransaction();
     }

    logError(error){
        Sentry.captureException(error);
    }

     async endLogging(){
       await Sentry.flush(); // Flush all awaiting event in queue
       transaction.finish();
     }
 }

Now create file name second.js

export const sum = (){
   const sentryLibIns = new SentryLib();
   try{
     // Something will break here
    } catch(error){
     sentryLibIns.error(error); 
   }
}

Now create the handler file name handler.js

const handler = async (event, context, callback)=>{
   const sentryLibIns = new SentryLib();
   sentryLibIns.startLogging();  
   try{
        fn1();
    } catch(error){
      sentryLibIns.error(error); 
    } finally{
      await sentryLibIns.endLogging();
   }
}

Sentry on AWS lambda in nodejs doesn't send exception

4 Answers4