CODEWITHSUNDEEP
firebasegoogle-cloud-platformgoogle-cloud-functionsgoogle-cloud-storagefirebase-storage
kamalbanga
kamalbanga

Reputation: 2011

Read from firebase storage and write to firestore using firebase functions

I had tried this typescript code 👇

import * as functions from "firebase-functions";
import * as admin from "firebase-admin";

import serviceAccount from "/Users/300041370/Downloads/serviceKey.json";

admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
});

const buckObj = functions.storage.bucket("myBucket").object();
export const onWikiWrite = buckObj.onFinalize(async (object) => {
  const filePath = object.name ?? "test.json";
  const bucket = admin.storage().bucket("myBucket");

  bucket.file(filePath).download().then((data) => {
    const contents = data[0];
  data = {"key": "value"};
const doc = admin.firestore().collection("myCollection").doc();
doc.set(data);
  });
});

but this gave me following error

"status":{"code":7,"message":"Insufficient permissions to (re)configure a trigger (permission denied for bucket myBucket). Please, give owner permissions to the editor role of the bucket and try again.

I had asked this question here but it got closed as duplicate of this question. It basically said, storage.bucket("myBucket") feature is not supported and that I'll have to instead use match for limiting this operation to files in this specific bucket/folder. Hence, I tried this 👇

const buckObj = functions.storage.object();
export const onWikiWrite = buckObj.onFinalize(async (object) => {
  if (object.name.match(/myBucket\//)) {
    const fileBucket = object.bucket;
    const filePath = object.name;
    const bucket = admin.storage().bucket(fileBucket);
    bucket.file(filePath).download().then((data) => {
      const contents = data[0];
      const doc = admin.firestore().collection("myCollection").doc();
      const data = {content: contents}
      doc.set(data);
    });
  }
});

I am still facing the same issue. I'll repeat that here:

"status":{"code":7,"message":"Insufficient permissions to (re)configure a trigger (permission denied for bucket myBucket). Please, give owner permissions to the editor role of the bucket and try again.

Upvotes: 1

Views: 1233

Answers (1)

Renaud Tarnec
Renaud Tarnec

Reputation: 83058

Since version 1.0 of the Firebase SDK for Cloud Functions, firebase-admin shall be initialized without any parameters within the Cloud Functions runtime.

The following should work (I've removed the check on filePath):

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';
admin.initializeApp();

export const onWikiWrite = functions.storage
  .object()
  .onFinalize(async (object) => {
    const fileBucket = object.bucket;
    const filePath = object.name;
    const bucket = admin.storage().bucket(fileBucket);
    return bucket
      .file(filePath)
      .download()
      .then((data) => {
        const contents = data[0];
        return admin
          .firestore()
          .collection('myCollection')
          .add({ content: contents });
      });
  });

Note that we return the chain of promises returned by the asynchronous Firebase methods. It is key, in a Cloud Function which performs asynchronous processing (also known as "background functions") to return a JavaScript promise when all the asynchronous processing is complete.

We also use the add() method instead of doing doc().set().

Finally, when checking the value of the filePath, be aware of the fact that there is actually no concept of folder or subdirectory in Cloud Storage (See this answer).

Upvotes: 3

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