Firebase function timeout regardless of code

Question

Edit: 2021 feb this problem was fixed.

I have been dealing with a timeout error using node js firebase function emulator. My function was working, but now the code will wait for a timeout regardless of the code. I tried copying the example on the quick start page, and the same error is occurring.

I can put console statements in the code, and I will see nothing output. I have another function that works properly when a document is created. The response errors out, but the function will continue executing for the duration of the timeout.

const functions = require("firebase-functions");
const admin = require("firebase-admin");

admin.initializeApp();
exports.addMessage = functions.https.onRequest(async (req, res) => {
    // Grab the text parameter.
    const original = req.query.text;
    // Push the new message into Firestore using the Firebase Admin SDK.
    const writeResult = await admin.firestore().collection('messages').add({original: original});
    // Send back a message that we've successfully written the message
    res.json({result: `Message with ID: ${writeResult.id} added.`});
  });

Error: Function timed out. at Timeout._onTimeout (/usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:640:19) at listOnTimeout (internal/timers.js:554:17) at processTimers (internal/timers.js:497:7) i functions: Beginning execution of "createTokenForEvents" ⚠ functions: Your function timed out after ~60s. To configure this timeout, see https://firebase.google.com/docs/functions/manage-functions#set_timeout_and_memory_allocation. /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:640 throw new Error("Function timed out."); ^

Edit: I have come to the conclusion that this function does work, but it just always error out. I was writing another function when I discover this error and even when I switch to this simple case, the error was present. However, in this case, the function does create a document, but whatever is keeping it on for the entire duration may also be hiding log statements too. My question has change; why is the function executing for the entire duration even after the code completes.

This code should not timeout as it's very simple, is the function only deployed in one region? Is it the closest possible to you? You could try deploying it to a second region as a test to check if this keeps timing out. — Rafael Lemos
– Rafael Lemos, Commented Jan 15, 2021 at 13:48
I'm getting the exact error. Not related to deployment - this is on the Firebase Emulator. Other functions work well. — galah92
– galah92, Commented Jan 15, 2021 at 14:11
@RafaelLemos I am using the firebase emulator. so I do not think it is an issue of latency. — Rahmi Pruitt
– Rahmi Pruitt, Commented Jan 16, 2021 at 0:56

Rahmi Pruitt · Accepted Answer · 2021-01-22 04:04:04Z

4

https://firebase.google.com/docs/functions/terminate-functions

As stated in the documentation, one of the principles of writing a good functions is

Terminate HTTP functions with res.redirect(), res.send(), or res.end().

Since my other functions where synchronous, writing a return statement was good enough. However, I solve the error by explicitly adding terminating response statement res.end(). I also experiment with returning a promise, but it did not solve the problem either.

Edit: This problem continues to occur in different scenarios. I literally cannot get the code to run when using a query https://github.com/firebase/firebase-functions/issues/847. As of Jan 2021, the firebase-functions repo seems to be unmaintained as far as fixing community issues. A user got a response from the firebase team saying they have been trying to fix the logging issues, but they would not commit to a date on the problem would be resolved. I would just not even bother using the firebase functions emulator. Deploying the function works fine.

edited Jan 22, 2021 at 4:04

answered Jan 16, 2021 at 1:57

Rahmi Pruitt

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2 Comments

Jayna Tanawala Over a year ago

I am simply running the node script which writes a minimum of 1000 records to the firestore. It is perfectly running on the local system! But it is throwing a timeout error while testing on the prod. Any idea regarding this?

Louis Sankey Over a year ago

I'm pretty sure I'm experiencing the same issue in Dec 2022

Rene Saarsoo · Accepted Answer · 2021-01-15 21:41:49Z

0

Due to the query parameter, add the slash symbol:

http://localhost:5001/.../us-central1/helloWorld/?foo=bar&test=string
http://localhost:5001/.../us-central1/helloWorld?foo=bar&test=string (no slash before ?)

Refer from https://github.com/firebase/firebase-tools/issues/1314

edited Jan 15, 2021 at 21:41

Rene Saarsoo

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answered Jan 15, 2021 at 10:39

wai

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1 Comment

Rutger Willems Over a year ago

This actually... worked... I had functions timing out in the emulator regardless of what they actually did. This solved it for me.

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