Firebase Cloud Function times out after 60000ms

Question

I am trying to use a Cloud-Function to export a Collection in from Cloud-Storage.

I followed this blog and deployed the following function:

const functions = require("firebase-functions");
const firebase = require("firebase-admin");
const { parseAsync } = require('json2csv');
const { v4: uuidv4 } = require('uuid');
const fs = require("fs");
const path = require("path");
const os = require("os");


const generateHostsCsv = functions.region("europe-west1").pubsub
  .topic("generate-hosts-csv")
  .onPublish(async message => {

    // gets the documents from the firestore collection
    const hostsSnapshot = await firebase
      .firestore()
      .collection("data")
      .doc("analytics")
      .collection("hosts")
      .get();

    const hosts = hostsSnapshot.docs.map(doc => doc.data());

    // csv field headers
    const fields = [
      "hostName",
      "count",
    ];

    // get csv output
    const output = await parseAsync(hosts, { fields });

    // generate filename
    const dateTime = new Date().toISOString().replace(/\W/g, "");
    const filename = `hosts_${dateTime}.csv`;

    const tempLocalFile = path.join(os.tmpdir(), filename);

    return new Promise((resolve, reject) => {
      //write contents of csv into the temp file
      fs.writeFile(tempLocalFile, output, error => {
        if (error) {
          reject(error);
          return;
        }
        const bucket = firebase.storage().bucket();

        // upload the file into the current firebase project default bucket
        bucket
           .upload(tempLocalFile, {
            // Workaround: firebase console not generating token for files
            // uploaded via Firebase Admin SDK
            // https://github.com/firebase/firebase-admin-node/issues/694
            metadata: {
              metadata: {
                firebaseStorageDownloadTokens: uuidv4(),
              }
            },
          })
          .then(() => resolve())
          .catch(errorr => reject(errorr));
      });
    });
  });

module.exports = { generateHostsCsv };

When I let it run, I only see this in my logs:

Function execution took 60000 ms, finished with status: 'timeout

But no file was created in my storage. What am I missing here? Let me know if you need more information.

Answer 1

As mentioned in the comments, it worked after I tried it for the third time.

Thanks @Doug for the help. I increased the timeout and also added some logs so I can see what exactly is causing the issue.