Uncaught TypeError: data is not an Blob or File(…)UploadFS.Uploader # ufs-uploader.js:47(anonymous function) # methods.js:23reader.onload # helpers.js:44
After uploading meteor from 1.3 to 1.4 . File upload not working
methods.js
export function upload(dataUrl, name, resolve, reject) {
// convert to Blob
const blob = dataURLToBlob(dataUrl);
blob.name = name;
// pick from an object only: name, type and size
const file = _.pick(blob, 'name', 'type', 'size');
// convert to ArrayBuffer
blobToArrayBuffer(blob, (data) => {
const upload = new UploadFS.Uploader({
data,
file,
store: ImagesStore,
onError: reject,
onComplete: resolve
});
upload.start();
}, reject);
}
Have you loaded the latest package from https://github.com/jalik/jalik-ufs - there were some breaking changes from Meteor 1.3 to 1.4:
Breaking changes
UploadFS.readAsArrayBuffer() is DEPRECATED
The method UploadFS.readAsArrayBuffer() is not available anymore, as uploads are using POST binary data, we don't need ArrayBuffer.
Related
My project used #Nativescript/firebase(https://github.com/EddyVerbruggen/nativescript-plugin-firebase) ignores methods of firebase.firestore.timestamp, and returns undefined by properties.
The below is minimum reproduction
app.js
import Vue from "nativescript-vue";
import Home from "./components/Home";
var firebase = require("#nativescript/firebase").firebase;
firebase
.init({})
.then(
function () {
console.log("firebase.init done");
},
function (error) {
console.log("firebase.init error: " + error);
}
);
new Vue({
render: (h) => h("frame", [h(Home)]),
}).$start();
Home.vue
import { firebase } from "#nativescript/firebase";
export default {
computed: {
async message() {
const Ref = firebase.firestore
.collection("comments")
.doc("07bhQeWDf3u1j0B4vNwG");
const doc = await Ref.get();
const hoge = doc.data();
console.log("hoge.commented_at", hoge.commented_at); // CONSOLE LOG: hoge.commented_at Sat Oct 23 2021 22:44:48 GMT+0900 (JST)
console.log("hoge.commented_at.seconds", hoge.commented_at.seconds); // CONSOLE LOG: hoge.commented_at.seconds undefined
const hogeToDate = hoge.toDate();
console.log("hogeToDate", hogeToDate); // no console.log appear
return hogeToDate; // simulator shows "object Promise"
},
},
};
I also tried const hogeTimestampNow = firebase.firestore.Timestamp.now(); then no console.log appear...
Environment
vue.js
Node.js v14.17.6
nativescript v8.1.2
nativescript-vue v2.9.0
#nativescript/firebase v11.1.3
If you dive into the source of #nativescript/firebase, in particular looking at /src/firebase-common.ts, you can see that firebase is a custom implementation and not the object/namespace normally exported by the ordinary Firebase Web SDK.
It uses a custom implementation so that it can be transformed depending on the platform the code is running on as shown in /src/firebase.android.ts and /src/firebase.ios.ts.
Of particular importance, is that Firestore's Timestamp objects are internally converted to JavaScript Date objects when exposed to your code as each platform has its own version of a Timestamp object. Because the exposed JavaScript Date object doesn't have a seconds property, you get undefined when attempting to access hoge.commented_at.seconds.
The equivalent of Timestamp#seconds would be Math.floor(hoge.commented_at / 1000) (you could also be more explicit with Math.floor(hoge.commented_at.getTime() / 1000) if you don't like relying on JavaScript's type coercion).
function getSeconds(dt: Date) {
return Math.floor(dt.getTime() / 1000)
}
While you can import the Timestamp object from the Modular Web SDK (v9+), when passed into the NativeScript plugin, it would be turned into an ordinary object (i.e. { seconds: number, nanoseconds: number } rather than a Timestamp).
import { Timestamp } from 'firebase/firestore/lite';
const commentedAtTS = Timestamp.fromDate(hoge.commented_at);
docRef.set({ commentedAt: commentedAtTS.toDate() }) // must turn back to Date object before writing!
firebase.firestore.timestamp does not work via #nativescript/firebase as #samthecodingman said.(https://stackoverflow.com/a/69853638/15966408)
Just use ordinally javascript methods and edit.
I tried
get timestamp from firestore then convert to milliseconds
get date with new Date() then convert to milliseconds
and same miliseconds logged.
via firestore
const Ref = firebase.firestore.collection("comments").doc("07bhQeWDf3u1j0B4vNwG");
const doc = await Ref.get();
const hoge = doc.data();
console.log("hoge.commented_at in milliseconds: ", Math.floor(hoge.commented_at / 1000));
// CONSOLE LOG: hoge.commented_at in milliseconds: 1634996688
via javascript methods
const getNewDate = new Date("October 23, 2021, 22:44:48 GMT+0900");
// same as hoge.commented_at
console.log("getNewDate in milliseconds: ", getNewDate.getTime() / 1000);
// CONSOLE LOG: getNewDate in milliseconds: 1634996688
I've started working with firebase storage and firebase functions recently. Right now I've been developing file upload from functions to storage .
I've got it working (upload is done and file appears on the storage section), yet, the image, stays like this forever (loading forever on the right side):
I though that it was an error from my code. Yet, if I open Google Cloud Platform - Storage, the image appears and I can open it and preview it.
In firebase storage, if I open the image (select on it and click open), it returns the following url: https://console.firebase.google.com/u/0/undefined
What may I been doing wrong? Here's the code I'm using:
function uploadImage() {
const newImageData = "data:image/png;base64,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"
var mimeTypes = require('mimetypes');
var image = newImageData,
mimeType = image.match(/data:([a-zA-Z0-9]+\/[a-zA-Z0-9-.+]+).*,.*/)![1],
fileName = 'test.' + mimeTypes.detectExtension(mimeType),
base64EncodedImageString = image.replace(/^data:image\/\w+;base64,/, ''),
imageBuffer = new Buffer(base64EncodedImageString, 'base64');
// Instantiate the GCP Storage instance
const { Storage } = require('#google-cloud/storage');
const googleCloudStorage = new Storage(firebaseSettings);
const bucket = googleCloudStorage.bucket('projectID.appspot.com');
var file = bucket.file(fileName);
return file.save(imageBuffer, {
metadata: { contentType: mimeType, cacheControl: "public, max-age=300" },
public: true,
validation: 'md5'
}, function (error: any) {
if (error) {
throw 'error';
}
return "https://storage.googleapis.com/share-expanses-dcc9f.appspot.com/" + fileName;
});
}
Thanks for the help
Haven't been able to test the solution given by Firebase, but here's the transcript of the response:
The problem that you are facing could be because of two reasons. The
first one is how you are uploading the files, via the Firebase
Console, using any Admin SDK, or via the gsutil command. If using the
Admin SDK option, the problem is a known issue where the required
metadata doesn’t exist, fortunately there is a workaround, you can try
this script to solve this issue.
Now, the second one is related to the network if you are using
comcast, please, try on a different network to see if this issue is
related to that.
When you save an image to firebase, you need to provide an access token in metadata : firebaseStorageDownloadTokens. It has to be an uuid.
More info can be found here : https://www.sentinelstand.com/article/guide-to-firebase-storage-download-urls-tokens
const { v4: uuid } = require("uuid")
function uploadImage() {
const newImageData = "data:image/png;base64,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"
var mimeTypes = require('mimetypes');
var image = newImageData,
mimeType = image.match(/data:([a-zA-Z0-9]+\/[a-zA-Z0-9-.+]+).*,.*/)![1],
fileName = 'test.' + mimeTypes.detectExtension(mimeType),
base64EncodedImageString = image.replace(/^data:image\/\w+;base64,/, ''),
imageBuffer = new Buffer(base64EncodedImageString, 'base64');
// Instantiate the GCP Storage instance
const { Storage } = require('#google-cloud/storage');
const googleCloudStorage = new Storage(firebaseSettings);
const bucket = googleCloudStorage.bucket('projectID.appspot.com');
var file = bucket.file(fileName);
return file.save(imageBuffer, {
metadata: {
contentType: mimeType,
cacheControl: "public,
max-age=300",
// THIS IS THE LINE YOU NEED TO ADD
firebaseStorageDownloadTokens: uuid(),
},
public: true,
validation: 'md5'
}, function (error: any) {
if (error) {
throw 'error';
}
return "https://storage.googleapis.com/share-expanses-dcc9f.appspot.com/" + fileName;
});
}
After that you'll need to click on "Create access token"
#jean-smaug answer is almost complete. Based on the page he linked (https://www.sentinelstand.com/article/guide-to-firebase-storage-download-urls-tokens), the only missing thing is to wrap the firebaseStorageDownloadTokens property inside a metadata object. I've just tested it and it's working fine 👌 No need to create access token afterwards.
In my case I added metadata while uploading and it loading as it showed in image but when I'm refresh page after 3 min I found that it upload correctly , so as Cafn explain if it not matter of metadata you should wait until it loaded
$uploadedObject=$bucket->upload($imageFile, [
'name' => 'Image_Name',
"metadata" => [ "contentType"=> 'image/png'],
]);
i'm trying to test an extension validator using Karma and Jasmine with latest Angular version. I have a service that receives a File and checks its extension and MIME type, this is the method signature:
public validateFileType(file: File, validTypes: string[]): Observable<boolean>
As you can see the method receives a File, so i want to either load some files i have in a /testing folder or create a file with '.doc'/'.xls'/'.pdf' extension (i would like to use the first approach, already tried creating a .doc, .xls file and the signature numbers does not match any real file).
But its impossible to load any File as the HttpClient can not be instantiated in a Karma test, i have tried everything i know and searched a lot, any help is really appreciated.
Example
import { TestBed } from '#angular/core/testing';
import { FileValidatorService } from './file-validator.service';
describe('FileValidatorService', () => {
let service: FileValidatorService;
beforeEach(() => {
TestBed.configureTestingModule({ providers: [FileValidatorService] });
service = TestBed.get(FileValidatorService);
});
it('should be created', () => {
expect(service).toBeTruthy();
});
describe('Types', () => {
it('should be false', () => {
const content = 'Hello test';
const data = new Blob([content], { type: 'application/zip' });
const arrayOfBlob = new Array<Blob>();
arrayOfBlob.push(data);
const applicationZip = new File(arrayOfBlob, 'Mock.zip', { type: 'application/zip' });
service.validateFileType(applicationZip, ['.doc', '.xls']).subscribe((result: boolean) => {
expect(result).toBeFalsy();
});
});
});
});
This test only works because the file i created generates some random signature code that i don't use so its not recognized and it doesn't match the expected types so is not working as it should.
am playing around with downloading and serving mp3 files in Meteor.
I am trying to download an MP3 file (https://www.sample-videos.com/audio/mp3/crowd-cheering.mp3) on my MeteorJS Server side (to circumvent CORS issues) and then pass it back to the client to play it in a AUDIO tag.
In Meteor you use the Meteor.call function to call a server method. There is not much to configure, it's just a method call and a callback.
When I run the method I receive this:
content:
"ID3���#K `� )�<H� e0�)������1������J}��e����2L����������fȹ\�CO��ȹ'�����}$A�Lݓ����3D/����fijw��+�LF�$?��`R�l�YA:A��# �0��pq����4�.W"�P���2.Iƭ5��_I�d7d����L� �p0��0A��cA�xc��ٲR�BL8䝠4���T��..etc..", data:null,
headers: {
accept-ranges:"bytes",
connection:"close",
content-length:"443926",
content-type:"audio/mpeg",
date:"Mon, 20 Aug 2018 13:36:11 GMT",
last-modified:"Fri, 17 Jun 2016 18:16:53 GMT",
server:"Apache",
statusCode:200
which is the working Mp3 file (the content-length is exactly the same as the file I write to disk on the MeteorJS Server side, and it is playable).
However, my following code doesn't let me convert the response into a BLOB:
```
MeteorObservable.call( 'episode.download', episode.url.url ).subscribe( ( result: any )=> {
console.log( 'response', result);
let URL = window.URL;
let blob = new Blob([ result.content ], {type: 'audio/mpeg'} );
console.log('blob', blob);
let audioUrl = URL.createObjectURL(blob);
let audioElement:any = document.getElementsByTagName('audio')[0];
audioElement.setAttribute("src", audioUrl);
audioElement.play();
})
When I run the code, the Blob has the wrong size and is not playable
Blob(769806) {size: 769806, type: "audio/mpeg"}
size:769806
type:"audio/mpeg"
__proto__:Blob
Uncaught (in promise) DOMException: Failed to load because no supported source was found.
On the backend I just run a return HTTP.get( url ); in the method which is using import { HTTP } from 'meteor/http'.
I have been trying to use btoa or atob but that doesn't work and as far as I know it is already a base64 encoded file, right?
I am not sure why the Blob constructor creates a larger file then the source returned from the backend. And I am not sure why it is not playing.
Can anyone point me to the right direction?
Finally found a solution that uses request instead of Meteor's HTTP:
First you need to install request and request-promise-native in order to make it easy to return your result to clients.
$ meteor npm install --save request request-promise-native
Now you just return the promise of the request in a Meteor method:
server/request.js
import { Meteor } from 'meteor/meteor'
import request from 'request-promise-native'
Meteor.methods({
getAudio (url) {
return request.get({url, encoding: null})
}
})
Notice the encoding: null flag, which causes the result to be binary. I found this in a comment of an answer related to downloading binary data via node. This causes not to use string but binary representation of the data (I don't know how but maybe it is a fallback that uses Node Buffer).
Now it gets interesting. On your client you wont receive a complex result anymore but either an Error or a Uint8Array which makes sense because Meteor uses EJSON to send data over the wires with DDP and the representation of binary data is a Uint8Array as described in the documentation.
Because you can just pass in a Uint8Array into a Blob you can now easily create the blob like so:
const blob = new Blob([utf8Array], {type: 'audio/mpeg'})
Summarizing all this into a small template if could look like this:
client/fetch.html
<template name="fetch">
<button id="fetchbutton">Fetch Mp3</button>
{{#if source}}
<audio id="player" src={{source}} preload="none" content="audio/mpeg" controls></audio>
{{/if}}
</template>
client/fetch.js
import { Template } from 'meteor/templating'
import { ReactiveVar } from 'meteor/reactive-var'
import './fetch.html'
Template.fetch.onCreated(function helloOnCreated () {
// counter starts at 0
this.source = new ReactiveVar(null)
})
Template.fetch.helpers({
source () {
return Template.instance().source.get()
},
})
Template.fetch.events({
'click #fetchbutton' (event, instance) {
Meteor.call('getAudio', 'https://www.sample-videos.com/audio/mp3/crowd-cheering.mp3', (err, uint8Array) => {
const blob = new Blob([uint8Array], {type: 'audio/mpeg'})
instance.source.set(window.URL.createObjectURL(blob))
})
},
})
Alternative solution is adding a REST endpoint *using Express) to your Meteor backend.
Instead of HTTP we use request and request-progress to send the data chunked in case of large files.
On the frontend I catch the chunks using https://angular.io/guide/http#listening-to-progress-events to show a loader and deal with the response.
I could listen to the download via
this.http.get( 'the URL to a mp3', { responseType: 'arraybuffer'} ).subscribe( ( res:any ) => {
var blob = new Blob( [res], { type: 'audio/mpeg' });
var url= window.URL.createObjectURL(blob);
window.open(url);
} );
The above example doesn't show progress by the way, you need to implement the progress-events as explained in the angular article. Happy to update the example to my final code when finished.
The Express setup on the Meteor Server:
/*
Source:http://www.mhurwi.com/meteor-with-express/
## api.class.ts
*/
import { WebApp } from 'meteor/webapp';
const express = require('express');
const trackRoute = express.Router();
const request = require('request');
const progress = require('request-progress');
export function api() {
const app = express();
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
next();
});
app.use('/episodes', trackRoute);
trackRoute.get('/:url', (req, res) => {
res.set('content-type', 'audio/mp3');
res.set('accept-ranges', 'bytes');
// The options argument is optional so you can omit it
progress(request(req.params.url ), {
// throttle: 2000, // Throttle the progress event to 2000ms, defaults to 1000ms
// delay: 1000, // Only start to emit after 1000ms delay, defaults to 0ms
// lengthHeader: 'x-transfer-length' // Length header to use, defaults to content-length
})
.on('progress', function (state) {
// The state is an object that looks like this:
// {
// percent: 0.5, // Overall percent (between 0 to 1)
// speed: 554732, // The download speed in bytes/sec
// size: {
// total: 90044871, // The total payload size in bytes
// transferred: 27610959 // The transferred payload size in bytes
// },
// time: {
// elapsed: 36.235, // The total elapsed seconds since the start (3 decimals)
// remaining: 81.403 // The remaining seconds to finish (3 decimals)
// }
// }
console.log('progress', state);
})
.on('error', function (err) {
// Do something with err
})
.on('end', function () {
console.log('DONE');
// Do something after request finishes
})
.pipe(res);
});
WebApp.connectHandlers.use(app);
}
and then add this to your meteor startup:
import { Meteor } from 'meteor/meteor';
import { api } from './imports/lib/api.class';
Meteor.startup( () => {
api();
});
Within the same firebase project and using a cloud function (written in node.js), I first download an FTP file (using npm ftp module) and then try to upload it into the firebase storage.
Every attempts failed so far and documentation doesn't help...any expert advices/tips would be greatly appreciated?
The following code uses two different approaches : fs.createWriteStream() and bucket.file().createWriteStream(). Both failed but for different reasons (see error messages in the code).
'use strict'
// [START import]
let admin = require('firebase-admin')
let functions = require('firebase-functions')
const gcpStorage = require('#google-cloud/storage')()
admin.initializeApp(functions.config().firebase)
var FtpClient = require('ftp')
var fs = require('fs')
// [END import]
// [START Configs]
// Firebase Storage is configured with the following rules and grants read write access to everyone
/*
service firebase.storage {
match /b/{bucket}/o {
match /{allPaths=**} {
allow read, write;
}
}
}
*/
// Replace this with your project id, will be use by: const bucket = gcpStorage.bucket(firebaseProjectID)
const firebaseProjectID = 'your_project_id'
// Public FTP server, uploaded files are removed after 48 hours ! Upload new ones when needed for testing
const CONFIG = {
test_ftp: {
source_path: '/48_hour',
ftp: {
host: 'ftp.uconn.edu'
}
}
}
const SOURCE_FTP = CONFIG.test_ftp
// [END Configs]
// [START saveFTPFileWithFSCreateWriteStream]
function saveFTPFileWithFSCreateWriteStream(file_name) {
const ftpSource = new FtpClient()
ftpSource.on('ready', function() {
ftpSource.get(SOURCE_FTP.source_path + '/' + file_name, function(err, stream) {
if (err) throw err
stream.once('close', function() { ftpSource.end() })
stream.pipe(fs.createWriteStream(file_name))
console.log('File downloaded: ', file_name)
})
})
ftpSource.connect(SOURCE_FTP.ftp)
}
// This fails with the following error in firebase console:
// Error: EROFS: read-only file system, open '20170601.tar.gz' at Error (native)
// [END saveFTPFileWithFSCreateWriteStream]
// [START saveFTPFileWithBucketUpload]
function saveFTPFileWithBucketUpload(file_name) {
const bucket = gcpStorage.bucket(firebaseProjectID)
const file = bucket.file(file_name)
const ftpSource = new FtpClient()
ftpSource.on('ready', function() {
ftpSource.get(SOURCE_FTP.source_path + '/' + file_name, function(err, stream) {
if (err) throw err
stream.once('close', function() { ftpSource.end() })
stream.pipe(file.createWriteStream())
console.log('File downloaded: ', file_name)
})
})
ftpSource.connect(SOURCE_FTP.ftp)
}
// [END saveFTPFileWithBucketUpload]
// [START database triggers]
// Listens for new triggers added to /ftp_fs_triggers/:pushId and calls the saveFTPFileWithFSCreateWriteStream
// function to save the file in the default project storage bucket
exports.dbTriggersFSCreateWriteStream = functions.database
.ref('/ftp_fs_triggers/{pushId}')
.onWrite(event => {
const trigger = event.data.val()
const fileName = trigger.file_name // i.e. : trigger.file_name = '20170601.tar.gz'
return saveFTPFileWithFSCreateWriteStream(trigger.file_name)
// This fails with the following error in firebase console:
// Error: EROFS: read-only file system, open '20170601.tar.gz' at Error (native)
})
// Listens for new triggers added to /ftp_bucket_triggers/:pushId and calls the saveFTPFileWithBucketUpload
// function to save the file in the default project storage bucket
exports.dbTriggersBucketUpload = functions.database
.ref('/ftp_bucket_triggers/{pushId}')
.onWrite(event => {
const trigger = event.data.val()
const fileName = trigger.file_name // i.e. : trigger.file_name = '20170601.tar.gz'
return saveFTPFileWithBucketUpload(trigger.file_name)
// This fails with the following error in firebase console:
/*
Error: Uncaught, unspecified "error" event. ([object Object])
at Pumpify.emit (events.js:163:17)
at Pumpify.onerror (_stream_readable.js:579:12)
at emitOne (events.js:96:13)
at Pumpify.emit (events.js:188:7)
at Pumpify.Duplexify._destroy (/user_code/node_modules/#google-cloud/storage/node_modules/duplexify/index.js:184:15)
at /user_code/node_modules/#google-cloud/storage/node_modules/duplexify/index.js:175:10
at _combinedTickCallback (internal/process/next_tick.js:67:7)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)
*/
})
// [END database triggers]
I've finally found the correct way to implement this.
1) Make sure the bucket is correctly referenced. Initially I just used
my project_id without the '.appspot.com' at the end'.
const bucket = gsc.bucket('<project_id>.appspot.com')
2) Create a bucket stream first then pipe the stream from the FTP get call to the bucketWriteStream. Note that file_name will be the name of the saved file (this file does not have to exist beforehand).
ftpSource.get(filePath, function(err, stream) {
if (err) throw err
stream.once('close', function() { ftpSource.end() })
// This didn't work !
//stream.pipe(fs.createWriteStream(fileName))
// This works...
let bucketWriteStream = bucket.file(fileName).createWriteStream()
stream.pipe(bucketWriteStream)
})
Et voilà, works like a charm...