function sample that uses firebase storage ref

We need a function sample that simply creates a file in firebase storage. Current samples make a file on the server using mkdirp and use temp file path for uploading that file to storage.

I would assume doing something like this would be valid and straightforward but it does not work since admin.storage().bucket().ref(..) is not valid along with functions.storage.bucket().ref(...)

var fileRef = admin.storage().bucket().ref('myFolder/myfile.txt');
// Uint8Array
var bytes = new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x21]);
fileRef .put(bytes).then(function(snapshot) {
  console.log('Uploaded an array!');
});

Here is a scenario and starting function :

export const newAccountCreated = functions.auth.user().onCreate(event => {
    const user = event.data;

    return admin.database().ref('users/' + user.uid).set({
        uid: user.uid,
        email: user.email
    }).then(() => {
       //Create a folder with user id and write data to info.txt file
        //this does not work
        var fileRef = admin.storage().bucket().ref(user.uid + '/info.txt');
        var bytes = new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x21]);
        fileRef.put(bytes).then(() => {
           console.log('file created');
        })
    });
});

[00hello]

I really feel that these types of things should be added to the documentation. It was only after going through the functions documentation and the storage documentation and looking at the different things that can be done with each did I ascertain that the storage function’s event.data could not have the same properties as the storage’s storage.ref().

It seems to me that this should be clearer in the function documentation. Because it’s easy to assume they should have the same properties. And it’s not easy to find out how to actually do those things with event.data that a storage.ref() allows you to do.

[inlined]

If you use the @google-cloud/storage library directly, you’ll need to initialize it with:

import * as storageAPI from `@google-cloud/storage`
const storage = storageAPI(); // Auto initialize in Google environments

or you can use the firebase-admin API to get an initialized copy of the API with:

const bucket = admin.storage().bucket();

The Admin SDK uses the @google-cloud/storage directly, so you’ll use “files” instead. E.g.

const stream = bucket.file('myFolder/myfile.txt').createWriteStream();
stream.end(bytes)
// The stream finish event will let you know the upload has completed