Sentry on AWS lambda in nodejs doesn't send exception - node.js

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!

Answer 1

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

Answer 2

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

Answer 3

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");
}

Answer 4

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();
}
}