Error: could not handle the request

[montanaflynn]

Getting this plain text response every 30 or so requests:

Error: could not handle the request

Checking the server logs I found this:

severity:  "ERROR"  
textPayload:  "Error: function crashed out of request scope
 Function invocation was interrupted.
" 

[iangudger]

There are no known issues that would cause this. Are you sure that it isn't a bug in your app?

[montanaflynn]

I never get the error when testing with (make test) or making the handler from the golang net/http server. I did find a similar issue: firebase/functions-samples#78 but that's for javascript.

My handler encodes a png image and writes it to http.ResponseWriter, here's the entire app.

Here is more error information from the logs:

Function execution took 284 ms, finished with status: 'connection error'

[iangudger]

Can you try removing the use of the nodego logger and see if that fixes the problem?

By the way, when you add the logging back, you should add the nodego.WithLoggerFunc middleware. That way your logs will get associated with the request that triggered them. See examples/logging.go.

[montanaflynn]

Removing the nodego logger does seem to fix the issue.

The problem remains even when using the nodego.WithLoggerFunc middleware. When using the middleware should I not use nodego.ErrorLogger.Println(err)? If I use Go's std log then I miss out on the error / info abstraction.

[montanaflynn]

Nevermind the problem remains even without the logs, just took over a hundred requests before it happened.

https://gist.github.com/montanaflynn/bb002f8212e9cc7f75af5cc03e7a5fd8

...
HTTP/1.1 200     3.66 secs:    7742 bytes ==> GET  /img-without-logs
HTTP/1.1 500     3.68 secs:      36 bytes ==> GET  /img-without-logs
HTTP/1.1 200     0.84 secs:    7742 bytes ==> GET  /img-without-logs
...

[montanaflynn]

I removed any third party packages and can reproduce with standard library:

This code returns the error / 500 response every so often.
This code does not return an error / 500 response afaik.

The difference in the code that doesn't return an error is I removed all the nodego logger code including init nodego.OverrideLogger() and nodego.WithLoggerFunc middleware wrapper.

[iangudger]

It seems that the problem could still be logging as you include nodego.OverrideLogger() in the problematic one, but not the non-problematic one.

[iangudger]

By the way, you can use nodego.ErrorLogger with nodego.WithLoggerFunc. Maybe we need to clarify the documentation.

[marcelogrsp]

Hi all, I am getting the same error.
It works when Testing but doesn't work when I send HTTP POST request.
Actually it works via POST request after I send 3 or more requests.

[iangudger]

Cloud Functions now has official Go support:
https://cloud.google.com/functions/docs/quickstart#functions-update-install-gcloud-go

As a result, this repository is no longer under active development. Pull requests are still welcome though.