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Code Issues Releases Wiki Activity

A websocket per datasource avoids Socket.io re-connect issues.

pull/3/head
Hugo Sequeira 2014-07-09 14:31:39 +02:00
parent 20e5a67152
commit e976bb4525
1 changed files with 7 additions and 50 deletions
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53
datasources/plugin_node.js
View File

@ -10,38 +10,14 @@
(function() {
var connectionCounter = 0;
var nodeJSDatasource = function(settings, updateCallback) {
var self = this,
connectionId = 0,
currentSettings = settings,
url,
socket,
newMessageCallback;
function setConnectionDead() {
if (self.socket && self.socket.connectionsAlive) {
if (self.socket.connectionsAlive.indexOf(self.connectionId)>-1){
self.socket.connectionsAlive.splice(self.socket.connectionsAlive.indexOf(self.connectionId), 1);
}
}
}
function setConnectionAlive() {
if (self.socket) {
// Initialization
if (!self.socket.connectionsAlive) {
self.socket.connectionsAlive = [];
}
// Check if alive connection have been saved
if (!_.contains(self.socket.connectionsAlive, self.connectionId)) {
self.socket.connectionsAlive.push(self.connectionId);
}
}
}
function onNewMessageHandler(message) {
var objdata = JSON.parse(message);
if (typeof objdata == "object") {
@ -49,7 +25,6 @@
} else {
updateCallback(data);
}
setConnectionAlive();
}
function joinRoom(roomName, roomEvent) {
@ -59,30 +34,17 @@
console.info("Joining room '%s' with event '%s'", roomName, roomEvent);
}
function checkDiscardSocket() {
// Disconnect not active socket
function discardSocket() {
// Disconnect datasource websocket
if (self.socket) {
// Discard socket if no other connection are using it
if (self.socket.connectionsAlive.length==0 && self.socket.connected) {
self.socket.disconnect();
console.info("Disconnected from Node.js server at: %s", self.url);
}
}
}
function connectToServer(url, rooms) {
// Establish connection with server
self.url = url;
self.socket = io.connect(self.url);
// Re-connect old disconnect socket
if (self.socket) {
if (self.socket.connectionsAlive) {
if (self.socket.disconnected) {
self.socket = io.connect(self.url,{'forceNew':true});
}
}
}
// Join the rooms
self.socket.on('connect', function() {
@ -110,8 +72,7 @@
self.socket.on('reconnect_failed', function(object) {
console.error("Re-connection to Node.js failed at: %s", self.url);
setConnectionDead();
checkDiscardSocket();
discardSocket();
});
}
@ -119,7 +80,7 @@
function initializeDataSource() {
// Reset connection to server
checkDiscardSocket();
discardSocket();
connectToServer(currentSettings.url, currentSettings.rooms);
// Subscribe to the events
@ -144,9 +105,7 @@
self.newMessageCallback = function(message) {
return;
};
// Set connection has dead
setConnectionDead();
checkDiscardSocket();
discardSocket();
};
this.onSettingsChanged = function(newSettings) {
@ -154,8 +113,6 @@
initializeDataSource();
};
// Main
self.connectionId = connectionCounter++;
initializeDataSource();
};