I started using Firebase a couple of weeks ago, and had Firebase Queue running on my node.js server code. Clients could push messages to queue/tasks, and the server would resolve them. I cannot replicate this after Firebase has changed to version 3, even though Firebase Queue has been updated and no-one else seems to be having problems. It is probably just a minor bug in my code, but I haven't found it after a couple of days, and I would appreciate it if someone could point it out for me.
Here I have my server code. It should print to the console whenever a task is added to the queue, but it isn't. The push on the last line demonstrates that it is able to connect to the server.
var firebase = require('firebase');
var Queue = require('firebase-queue');
firebase.initializeApp({
serviceAccount: 'serviceAccountCredentials.json',
databaseURL: 'https://heretikchess-250ed.firebaseio.com/'
});
var ref = firebase.database().ref('queue');
var queue = new Queue(ref, function(data, progress, resolve, reject) {
console.log('This should print whenever a task is pushed onto the queue.')
console.log(data);
setTimeout(function() {
resolve();
}, 1000);
});
ref.push('this is a push from the server');
//This push works fine, so there's no problem connecting to the server.
And here is my client code. The pushes to queue/tasks are successful.
<!doctype html>
<html lang='en'>
<head>
<meta charset="utf-8">
<title>Why won't my code work?</title>
<script src="https://www.gstatic.com/firebasejs/3.0.0/firebase.js"></script>
<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'></script>
</head>
<body>
<div>
<h3>Submit push to firebase</h3>
<button id='submitbutton' class='btn btn-default' type='button'>Submit</button>
</div>
<script>
var config = {
apiKey: "AIzaSyCJKI3tjnnuOIcx2rnOuSTUgncuDbbxfwg",
authDomain: "heretikchess-250ed.firebaseapp.com",
databaseURL: "https://heretikchess-250ed.firebaseio.com",
storageBucket: "heretikchess-250ed.appspot.com",
};
firebase.initializeApp(config);
var ref = firebase.database().ref('queue/tasks');
//Send message to queue/tasks
$('#submitbutton').click(function() {
ref.push('this is a push from the client');
})
</script>
</body>
</html>
This works for me:
server.js
var firebase = require('firebase');
var Queue = require('firebase-queue');
firebase.initializeApp({
serviceAccount: 'serviceAccountCredentials.json',
databaseURL: 'https://heretikchess-250ed.firebaseio.com/'
});
var db = firebase.database();
var ref = db.ref("queue");
var queue = new Queue(ref, function(data, progress, resolve, reject) {
console.log('This should print whenever a task is pushed onto the queue.')
console.log(data);
setTimeout(function() { // NB: the record will be entirely removed when resolved
resolve();
}, 1000);
});
client.js
var firebase = require('firebase');
var Queue = require('firebase-queue');
firebase.initializeApp({
serviceAccount: 'serviceAccountCredentials.json',
databaseURL: 'https://heretikchess-250ed.firebaseio.com/'
});
var db = firebase.database();
var ref = db.ref("queue");
var task = {'userId': "Peter"};
// ref.child('tasks').push('this is a push from the client"});
// NB the above doesn't work because it's a string and not a structure
ref.child('tasks').push({"name": "this is a push from the client"}).then(function(){ process.exit();});
NB - you need to post a structure and not a value into tasks. You may find that it works if instead of
ref.push('this is a push from the client');
you use
ref.push({"name": "this is a push from the client"});
Also where you are trying to perform the job requests from the web page I believe that you will also need to authenticate the user as the app initialize does not I believe authenticate the user but merely identifies the connection.
index.html
<!doctype html>
<html lang='en'>
<head>
<meta charset="utf-8">
<title>Why won't my code work?</title>
<script src="https://www.gstatic.com/firebasejs/3.0.0/firebase.js">
</script>
<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'>
</script>
</head>
<body>
<div>
<h3>Submit push to firebase</h3>
<button id='submitbutton' class='btn btn-default' type='button'>Submit</button>
</div>
<script>
var config = {
apiKey: "AIzaSyCJKI3tjnnuOIcx2rnOuSTUgncuDbbxfwg",
authDomain: "heretikchess-250ed.firebaseapp.com",
databaseURL: "https://heretikchess-250ed.firebaseio.com",
storageBucket: "heretikchess-250ed.appspot.com",
};
firebase.initializeApp(config);
var ref = firebase.database().ref('queue/tasks');
// NEED TO AUTH THE CONNECTION AS A USER
firebase.auth().signInWithEmailAndPassword('peter@pscott.com.au', 'password').catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// ...
}).then( function(){console.log('peter logged in')});
//Send message to queue/tasks
$('#submitbutton').click(function() {
ref.push({'frompeter':'this is a push from the client'});
})
</script>
</body>
</html>
Note that you will also need to add the user and configure the access permissions in the auth for the /queue path. I manually added the username for peter@pscott.com.au and password through the firebase auth/users console screen.
A starter config that you would want to refine.
{
"rules": {
".read": false,
".write": false,
"queue": {
".read": true,
".write": true
}
}
}
If you have the auth open as above then you will be able to test a client request from the command line using curl:
curl -X POST -d '{"foo": "bar"}' https://heretikchess-250ed.firebaseio.com//queue/tasks.json
If still having problems perhaps check all your library versions from shell.
## Display node version
npm -v
## ( mine is 3.9.0 )
npm list firebase
## mine is 3.0.2
npm list firebase-queue
## mine is 1.4.0
来源：https://stackoverflow.com/questions/37406271/my-firebase-queue-doesnt-do-anything-after-i-changed-to-firebase-3