Create and upload pdf file to firebase storage using cloud functions? (can upload locally file, but not from cloud functions)

Question

const { Storage } = require("@google-cloud/storage");
const storage = new Storage({
keyFilename: "./xxx-path-to-key(locally).json",
projectId: "my project ID",
});

exports.get_data = functions.https.onRequest(async (req, res) => {

const pdf = async () => {
const doc = new PDFDocument();
doc.text("Hello, World!");
doc.end();
return await getStream.buffer(doc);
};

const pdfBuffer = await pdf();
const pdfBase64string = pdfBuffer.toString("base64"); //getting string which I want to send to storage like pdf file

const bucketName = "gs://path-to-storage.com/"
let filename = "test_file.pdf" //some locally pdf file (but can't save locally while using cloud functions) 

const uploadFile = async () => {
// Uploads a local file to the bucket
await storage.bucket(bucketName).upload(filename, { //this one fine works for locally uploading
  metadata: {
    cacheControl: "public, max-age=31536000",
    contentType: "application/pdf",
  },
});

console.log(`${filename} uploaded to ${bucketName}.`);
};

uploadFile();

})

I need to create PDF file using cloud functions and upload it to firebase storage. I've create pdfBase64string - and just need to save this string-pdf to storage, but can't find information to do it. I tried many different ways but got stuck, because Google answers come to the end.

Answer 1

Notice that you are using the Cloud Storage and not the Firebase Storage library. You can upload with:

// Create a root reference
var storageRef = firebase.storage().ref();
// Create a reference to 'mountains.pdf'
var ref = storageRef.child('mountains.pdf');
// Base64 formatted string
var message = '5b6p5Y+344GX44G+44GX44Gf77yB44GK44KB44Gn44Go44GG77yB';
ref.putString(message, 'base64').then(function(snapshot) {
  console.log('Uploaded a base64 string!');
});

from the documentation

Now,

1. To be able to access Firebase Storage from Cloud Functions you need to add Firebase Editor role to the Cloud Function service account.
2. Alternatively you can use a Firebase Function to upload to Firebase Storage.

The Cloud Storage library is not the same as the Firebase Storage library.