Firebase Emulator halted when uploading pdf to Storage "Error: An unexpected error has occurred"

[isanecat]

I have a cloud function which works for creating a PDF triggered from firestore onCreate function. The function will store the PDF to Firebase storage after creation. The function is written in Node.js. Firebase emulator crashes with "Error: An unexpected error has occurred." when function triggered with Flutter code.

(Ubuntu 22.04)
Firebase version : 11.0.1 node version: v16.14.0 Browser: Chrome Firebase login completed with sudo privilege

Below one is storage.rules:

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
        allow read, write: if request.auth!=null;
    }
  }
}

Below one is firestore.rules:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {

    match /Admins/{_adminID}/Package/{adminID_} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true && 
        resource.data.Admin_ID == request.auth.uid;
    }
    match /Admins/{AdminID}/Team/{UserID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true; 
    }
    match /Users/{UserID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true; 
    }
    match /TeamRequests/{RequestUserID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true; 
    }
    match /Admins/{AdminID}/Companies/{CompanyID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true;
    }
    match /Admins/{AdminID}/Companies/{CompanyID}/Imports/{ImportID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true;
    }
    match /Admins/{AdminID}/Companies/{CompanyID}/Imports/{ImportID}/Transaction/{TransactionID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true;
    }
    match /Admins/{AdminID}/Companies/{CompanyID}/Imports/{ImportID}/Transactions/{TransactionID}/Storage_Files/{StorageFileID} {
      allow read, write: if 
        request.auth != null && 
        request.auth.token.email_verified == true;
    }
  }
}

Below one is firebase functions :

const functions = require("firebase-functions");
const PdfKit = require("pdfkit");
const admin = require("firebase-admin");
const db = admin.firestore();


exports.createIremPdf = functions.firestore.document(
    "Admins/{adminID}/Companies/{companyID}/Imports/{impID}/Transactions/{tranzID}")
    .onCreate(async (data, context) => {
     
      const snapshot = await db.
          collection("Admins").doc(context.params.adminID).
          collection("Companies").doc(context.params.companyID).
          collection("Imports").doc(context.params.impID).
          collection("Transactions").doc(context.params.tranzID).
          collection("Storage_Files").get();
      let refCounter = snapshot.size;
      refCounter++; 
      const dosyaAdi = data.data().Transaction_ID + "-" + refCounter.
          toString();
      dosyaAdi;

        const pdfDoc = new PdfKit();

      const file = await admin
          .storage()
          .bucket()
          .file(("Admins/").concat(context.params.adminID).
              concat("/Companies/").concat(context.params.companyID).
              concat("/Imports/").concat(context.params.impID).
              concat("/Transactions/").concat(context.params.tranzID).
              concat("/Storage_Files/").concat("dosyaAdi").concat(".pdf"));

      await new Promise((resolve, reject) => {
        const writeStream = file.createWriteStream({
          resumable: false,
          contentType: "application/pdf",
        });

        writeStream.on("finish", () => resolve());
        writeStream.on("error", (e) => reject(e));
        pdfDoc.pipe(writeStream);

        pdfDoc
            .fontSize(24)
            .text(`${data.data().I_Rem_Beneficiary_Bank}`)
            .fontSize(16)
            .moveDown(2)
            .text("This is your receipt!");
        pdfDoc.end();
      });

      const metadata = await file.getMetadata().then((data)=>{
        return data[0];
      });

      const currentTime = admin.firestore.FieldValue.serverTimestamp();
      await db
          .collection("Admins")
          .doc(context.params.adminID)
          .collection("Companies")
          .doc(context.params.companyID)
          .collection("Imports")
          .doc(context.params.impID)
          .collection("Transactions")
          .doc(context.params.tranzID)
          .collection("Storage_Files")
          .add({
            "File_Name": "dosyaAdi.pdf",
            "Description": "Bank Instruction",
            "Creator": data.data().Creator,
            "Upload_Time": currentTime,
            "File_Size": parseInt(metadata.size),
            "File_Path": metadata.name,
          });

    });

[yuchenshi]

@isanecat Would you mind attaching the storage-debug.log and functions-debug.log after the crash?

[isanecat]

Emulator hasn't created any file such as storage-debug.log and functions-debug.log after the crash. There is only firestore-debug.log as follows:

May 25, 2022 9:50:11 PM com.google.cloud.datastore.emulator.firestore.websocket.WebSocketServer start
INFO: Started WebSocket server on ws://localhost:35389
API endpoint: http://localhost:8080
If you are using a library that supports the FIRESTORE_EMULATOR_HOST environment variable, run:

   export FIRESTORE_EMULATOR_HOST=localhost:8080

Dev App Server is now running.

May 25, 2022 9:50:25 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 9:50:25 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.
May 25, 2022 9:50:26 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 9:50:26 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 9:50:26 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 9:50:26 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 9:50:26 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:04 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:05 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:05 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:06 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:06 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:06 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:12 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:13 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:15 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:15 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:34 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:34 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:34 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:34 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
May 25, 2022 10:01:35 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.

[isanecat]

There is no Emulator crash and file created as requested when I change below code for storage path as follows:

      const file = await admin
          .storage()
          .bucket()
          .file(("Admins/").concat(context.params.adminID).
              concat("/Companies/").concat(context.params.companyID).
              concat("/Imports/").concat(context.params.impID).
              concat("/Transactions/").concat(context.params.tranzID).
              concat("/").concat("dosyaAdi").concat(".pdf"));

Its is strange that removing "Storage_Files/" make difference despite no specific path mentioned on storage.rules but I need this kind of sub folders.

[phath9]

Having similar issue. The problem arises when I tried to putFile to storage but no problem when accessing file. The emulator will abruptly stop without giving any meaningful info.

[phath9]

It seems to be related to storage rules. From my testing, only allow read, write: if true; works. Any other complex rules will break the Emulator.

Maybe related to https://github.com/firebase/firebase-tools/issues/3550. However I'm using latest (11.0.1) version of Firebase Tools but it still crashes.

Not sure if this line causes the crash, from firebase-debug.log

[debug] [2022-05-31T17:26:01.634Z] Error: ENOENT: no such file or directory, open 'C:\Users<user>\AppData\Local\Temp\firebase\storage\blobs<project>.appspot.com_o_users%252Ftest%252Fmedia%252Ftest.txt' at openSync (node:fs:585:3) at Persistence.readBytes (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\lib\emulator\storage\persistence.js:37:36) at StorageLayer.uploadObject (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\lib\emulator\storage\files.js:157:52) at handleUpload (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\lib\emulator\storage\apis\firebase.js:302:53) at handleObjectPostRequest (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\lib\emulator\storage\apis\firebase.js:387:16) at Layer.handle [as handle_request] (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\layer.js:95:5) at next (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\route.js:137:13) at Route.dispatch (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\route.js:112:3) at Layer.handle [as handle_request] (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\layer.js:95:5) at C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:281:22 at param (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:354:14) at param (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:365:14) at param (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:365:14) at Function.process_params (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:410:3) at next (C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\node_modules\express\lib\router\index.js:275:10) at C:\Users<user>\AppData\Roaming\nvm\v16.15.0\node_modules\firebase-tools\lib\emulator\storage\apis\firebase.js:68:9 [error] [error] Error: An unexpected error has occurred.

[astanb]

This may be related to https://github.com/firebase/firebase-tools/issues/4470 and long file paths.

My storage rules are already set to allow read, write: if true; but I am still encountering this error.

[ZiyadF296]

I have been experiencing this exact same issue when using Firebase Storage. Any temporary solutions or fixes for this?

Been using Flutter and whenever uploading a JPG image to Storage, the entire emulator crashes predominantly. The error is vague and no logs can be found to get a reason as to why this is happening. I am unable to upload files to storage on my emulator, however, the production server works fine, which defeats the whole point of the emulator, testing locally.

[phath9]

This may be related to #4470 and long file paths.

My storage rules are already set to allow read, write: if true; but I am still encountering this error.

I've tested with short file names, mine still crashed if rules are complex. I guess there are multiple causes to this but we can't distinguish easily because no debug info available.

[tonyjhuang]

Likely related to internal bug, b/234835425

[tonyjhuang]

Can folks confirm that this bug is only applicable to Flutter usages?

[tonyjhuang]

Closing due to inactivity