[Project] Initial Commit
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.idea/
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bower_components/
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*.iml
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Apache License
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Version 2.0, January 2004
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@ -0,0 +1,2 @@
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# strolch-wc-ws-observer
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WebSocket observer updates handler for Strolch Polymer-Apps.
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@ -0,0 +1,26 @@
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{
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"name": "strolch-wc-ws-observer",
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"description": "Strolch Polymer WebSocket observer update handler extension",
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"version": "0.1.0",
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"authors": [
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"Robert von Burg"
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],
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"keywords": [
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"strolch",
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"websocket",
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"observers"
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],
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"main": "strolch-wc-ws-observer.html",
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"private": false,
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"repository": {
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"type": "git",
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"url": "https://github.com/4treesCH/strolch-wc-ws-observer.git"
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},
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"license": "https://github.com/4treesCH/strolch-wc-ws-observer/LICENSE",
|
||||
"homepage": "https://github.com/4treesCH/strolch-wc-ws-observer",
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"ignore": [],
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"dependencies": {
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"strolchjs": "4treesCH/strolchjs#^0.2.5",
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"polymer": "Polymer/polymer#^1.11.3"
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}
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}
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@ -0,0 +1,185 @@
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<link rel="import" href="../bower_components/polymer/polymer.html">
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<link rel="import" href="../bower_components/iron-ajax/iron-ajax.html">
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<dom-module id="strolch-wc-ws-observer">
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<template>
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</template>
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<script>
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'use strict';
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// shared state
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var initialized = false;
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var webSocket = null;
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var observers = {};
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Polymer({
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is: 'strolch-wc-ws-observer',
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behaviors: [],
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properties: {
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wsPath: {
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type: String,
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value: '/websocket/strolch'
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}
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},
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ready: function (e) {
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console.log("strolch-wc-ws-observer attached, connecting WebSocket");
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if (!initialized) {
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initialized = true;
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this._openWebSocket();
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}
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},
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register: function (objectType, type, source, flat, callback) {
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var byObjectType = observers[objectType];
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if (byObjectType == null) {
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observers[objectType] = {};
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byObjectType = observers[objectType]
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}
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var byType = byObjectType[type];
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if (byType == null) {
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byObjectType[type] = {};
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byType = byObjectType[type];
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this._register(objectType, type, flat);
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}
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if (byType[source] != null) {
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console.error("There already is a callback defined for " + objectType + " " + type + " " + source + ". Overwriting!");
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}
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byType[source] = callback;
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console.log("Registered callback for " + objectType + " " + type + " " + source + " as " + (flat ? "flat" : "full") + " format");
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},
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unregister: function (objectType, type, source) {
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var byObjectType = observers[objectType];
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if (byObjectType == null) {
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return;
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}
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var byType = byObjectType[type];
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if (byType == null) {
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return
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}
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delete byType[source];
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console.log("Unregistered callback for " + objectType + " " + type + " " + source);
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},
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_register: function (objectType, type, flat) {
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console.log("Registering for updates for " + objectType + " " + type);
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this._sendWsMessage({
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msgType: "ObserverRegister",
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objectType: objectType,
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type: type,
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flat: flat
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});
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},
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notifyObservers: function (msg) {
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var byObjectType = observers[msg.objectType];
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if (byObjectType == null) {
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return;
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}
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var byType = byObjectType[msg.type];
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if (byType == null) {
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return
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}
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Object.keys(byType).forEach(function (k) {
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try {
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byType[k](msg.objectType, msg.type, msg.data);
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} catch (e) {
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console.error("Failed to update " + k + " for " + msg.objectType + " " + msg.type + ": " + e);
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console.error(e);
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}
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});
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},
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_openWebSocket: function () {
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var url;
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if (window.location.protocol === 'https:') {
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url = "wss://"
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} else {
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url = "ws://"
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||||
}
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url += window.location.hostname + ':' + window.location.port + this.wsPath;
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console.log("Connecting to WS URL " + url);
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webSocket = new WebSocket(url);
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||||
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var that = this;
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webSocket.onclose = function (evt) {
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that.webSocket = null;
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that._handleSocketError('WebSocket connection to server lost due to: ' + evt.reason);
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};
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webSocket.onopen = function (event) {
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console.log('Socket opened, sending auth...');
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var msg = {
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msgType: "Authenticate",
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username: Strolch.getUserConfig().username,
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authToken: Strolch.getAuthToken()
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};
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that._sendWsMessage(msg);
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};
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webSocket.onmessage = function (event) {
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that._handleSocketMessage(event.data);
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||||
};
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||||
|
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webSocket.onerror = function (event) {
|
||||
console.error('WebSocket Received error from socket:');
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||||
console.error(event.data);
|
||||
};
|
||||
},
|
||||
|
||||
_handleSocketError: function (message) {
|
||||
if (message.indexOf('Invalid authentication') >= 0) {
|
||||
console.error("Authentication invalid. Not reconnecting WebSocket");
|
||||
} else {
|
||||
console.error('Received error from socket: ' + message);
|
||||
|
||||
console.log("Reconnecting...");
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||||
this.debounce("reconnect", this._reconnectWebSocket, 500);
|
||||
}
|
||||
},
|
||||
|
||||
_handleSocketMessage: function (data) {
|
||||
var msg = JSON.parse(data);
|
||||
|
||||
if (msg.msgType == "ObserverAdd" || msg.msgType == "ObserverUpdate" || msg.msgType == "ObserverRemove") {
|
||||
this.notifyObservers(msg);
|
||||
} else if (msg.msgType == "Authenticate") {
|
||||
console.log("Successfully authenticated!");
|
||||
} else {
|
||||
console.error("Unhandled event " + msg.msgType);
|
||||
}
|
||||
},
|
||||
_sendWsMessage: function (data) {
|
||||
console.log(webSocket.readyState);
|
||||
|
||||
if (webSocket.readyState != 1) {
|
||||
var that = this;
|
||||
console.log("Delaying message as WebSocket not yet ready!");
|
||||
setTimeout(function () {
|
||||
that._sendWsMessage(data);
|
||||
}, 100);
|
||||
} else {
|
||||
webSocket.send(JSON.stringify(data));
|
||||
}
|
||||
},
|
||||
|
||||
_reconnectWebSocket: function (msg) {
|
||||
this._openWebSocket();
|
||||
}
|
||||
});
|
||||
</script>
|
||||
</dom-module>
|
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