IPC Event Handler Implemented and working well

EventHandler.js

@@ -0,0 +1,143 @@
+exports.newEventHandler = function newEventHandler() {
+    let thisObject = {
+        initialize: initialize,
+        createEventHandler: createEventHandler,
+        deleteEventHandler: deleteEventHandler,
+        listenToEvent: listenToEvent,
+        stopListening: stopListening,
+        raiseEvent: raiseEvent 
+    }
+
+    let ipc = require('node-ipc');
+    let eventListeners = new Map()
+    let responseWaiters = new Map()
+
+    ipc.config.id = 'Clone Executor';
+    ipc.config.retry = 1500;
+
+    return thisObject
+
+    function initialize(callBackFunction) {
+
+        ipc.connectTo(
+            'world',
+            function () {
+                ipc.of.world.on(
+                    'connect',
+                    function () {
+                        ipc.log('## Connected to Superalgos Event Server ##'.rainbow, ipc.config.delay);
+
+                        let eventCommand = {
+                            action: 'greetings',
+                            from: 'Clone Executor'
+                        }
+
+                        sendCommand(eventCommand)
+
+                        callBackFunction()
+                    }
+                );
+                ipc.of.world.on(
+                    'disconnect',
+                    function () {
+                        ipc.log('Disconnected from Superalgos Event Server '.notice);
+                    }
+                );
+                ipc.of.world.on(
+                    'message',  // here is where all incomming messages are processed.
+                    function (data) {
+                        ipc.log('Got a message from Superalgos Event Server: '.debug, data);
+
+                        let message = JSON.parse(data)
+
+                        if (message.action === 'Event Raised') {
+                            let handler = eventListeners.get(message.eventHandlerName + '-' + message.eventType)
+                            if (handler) {
+                                handler(message)
+                            }
+                            return
+                        }
+
+                        if (message.action === 'Event Server Response') {
+                            let handler = responseWaiters.get(message.callerId)
+                            if (handler) {
+                                handler(message)
+                            }
+                            return
+                        }
+                    }
+                );
+            }
+        );
+    }
+
+    function sendCommand(command, responseCallBack, eventsCallBack) {
+
+        if (command.action === 'listenToEvent') {
+            eventListeners.set(command.eventHandlerName + '-' + command.eventType, eventsCallBack)
+        }
+        if (command.callerId && responseCallBack) {
+            responseWaiters.set(command.callerId, responseCallBack)
+        }
+
+        ipc.of.world.emit(
+            'message',
+            JSON.stringify(command)
+        )
+    }
+
+    function createEventHandler(eventHandlerName, callerId, responseCallBack) {
+        let eventCommand = {
+            action: 'createEventHandler',
+            eventHandlerName: eventHandlerName,
+            callerId: callerId
+        }
+
+        sendCommand(eventCommand, responseCallBack)
+    }
+
+    function deleteEventHandler(eventHandlerName, callerId, responseCallBack) {
+        let eventCommand = {
+            action: 'deleteEventHandler',
+            eventHandlerName: eventHandlerName,
+            callerId: callerId
+        }
+
+        sendCommand(eventCommand, responseCallBack)
+    }
+
+    function listenToEvent(eventHandlerName, eventType, extraData, callerId, responseCallBack, eventsCallBack) {
+        eventCommand = {
+            action: 'listenToEvent',
+            eventHandlerName: eventHandlerName,
+            eventType: eventType,
+            extraData: extraData,
+            callerId: callerId
+        }
+
+        sendCommand(eventCommand, responseCallBack, eventsCallBack)
+    }
+
+    function stopListening(eventHandlerName, eventSubscriptionId, callerId, responseCallBack) {
+        eventCommand = {
+            action: 'stopListening',
+            eventHandlerName: eventHandlerName,
+            eventSubscriptionId: eventSubscriptionId,
+            callerId: callerId
+        }
+
+        sendCommand(eventCommand, responseCallBack)
+    }
+
+    function raiseEvent(eventHandlerName, eventType, event, callerId, responseCallBack) {
+        let eventCommand = {
+            action: 'raiseEvent',
+            eventHandlerName: eventHandlerName,
+            eventType: eventType,
+            event: event,
+            callerId: callerId
+        }
+
+        sendCommand(eventCommand, responseCallBack)
+    }
+}