How can I generate access token to file uploaded to firebase storage?

Question

I'm able to upload a file to my firebase storage bucket via nodejs using the firebase-admin but when I go to the firebase UI I cannot open the file. I noticed that uploaded files via firebase UI will have an access token automatically generated but no for files uploaded via nodejs.

I already tried several things like setting metadata with downloadtokens and making the file public after it is uploaded. None has worked.

How can I generate the access token via API call rather than having to go to hi and click generate token for each uploaded file?

Answer 1

Full answer as of July 2020:

It is possible to generate a uuid and use it as a token when uploading a file to Firebase Cloud Storage (aka Google Cloud Storage)

First import this package:

const uuidv4 = require('uuid/v4');

or

const { v4: uuidv4 } = require('uuid');

Then, generate a unique id before uploading the file:

const uuid = uuidv4();

Finally, upload your file:

The most important is to embed

metadata: { firebaseStorageDownloadTokens: uuid, }

in the metadata field of upload function

await admin.storage().bucket().upload(filePath, {
                            destination: thumbFilePathForUpload,
                            metadata: {
                                metadata: {
                                    firebaseStorageDownloadTokens: uuid,
                                }
                            },
                        });

In order to check if it worked, click on the newly uploaded file directly from Firebase Console, you should have a blue, clickable link along your file. You can also find the access token under File Location, right under the preview.

For instance:

Answer 2

I use the below command and it is working perfectly

    const uuidv4 = require('uuid/v4');
    const uuid = uuidv4();
    metadata: { firebaseStorageDownloadTokens: uuid }

Answer 3

To clarify @Rawan-25's answer further, what you want is:

bucket.upload(filename, {
  destination,
  metadata: {
      metadata :{
        firebaseStorageDownloadTokens: uuidv4(),
     }
  },
})

This is per this Github issue.