I switched my ExpressJS application from Heroku to Google App Engine.
Everything works ok now.
But I am curious about how to debug my application if some exceptions happen on GAE.
On heroku, I can do heroku logs -t to trace the errors. I can check the variable printed by console.error(var) as well.
However, I don't know how to do the same thing on GAE.
I have checked logging of Stack Driver, it seems that it only shows some informations of every HTTP request instead of the detailed logs like heroku.
I have found that there is error report service of Stack Driver. It may what I want.
Here is the tutorial telling us how to setup. But the steps are confusing for me.
Does anyone have the experience to setup the error reporting?
I am finding a more clear steps to setup this.
Thanks a lot and appreciated!
For Stackdriver Error Reporting:
You can use code similar to the one advised for Google Compute Engine: https://cloud.google.com/error-reporting/docs/setup/compute-engine#send_exception_data
Here is what worked for me using Express and Winston on App Engine flexible environment:
var winston = require('winston');
winston.add(winston.transports.File, { filename: '/var/log/app_engine/custom_logs/my.errors.json' });
var report = function (err, req) {
var payload = {
serviceContext: {
service: 'my service',
},
message: err.stack,
context: {
httpRequest: {
url: req.originalUrl,
method: req.method,
referrer: req.header('Referer'),
userAgent: req.header('User-Agent'),
remoteIp: req.ip,
responseStatusCode: 500,
}
}
};
winston.error (payload);
};
// Handle errors
app.use(function (err, req, res, next) {
report(err, req);
res.status(500).send(err.response || 'Something broke!');
});
For Stackdriver Logging:
Indeed, the request_log only contains HTTP requests log entries on App Engine flex. Look in the stdout log to see the output of your application.
Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments