restructuring resource manager

dispatch_system/dispatch_manager/rm.js

+let workerNodes = {}, timeline = {}
+const constants = require('../constants.json')
+let kafka = require('kafka-node'),
+    Producer = kafka.Producer,
+    client = new kafka.KafkaClient({
+        kafkaHost: constants.network.external.kafka_host,
+        autoConnect: true
+    }),
+    producer = new Producer(client),
+    Consumer = kafka.Consumer,
+    consumer = new Consumer(client,
+        [
+            { topic: 'heartbeat' }, // receives heartbeat messages from workers, also acts as worker join message
+            { topic: "request" } // receives deployment details from RM
+        ],
+        [
+            { autoCommit: true }
+        ])
+
+function getAddress() {
+    
+}
+
+consumer.on('message', function (message) {
+
+    let topic = message.topic
+    message = message.value
+    if (topic !== "heartbeat")
+        console.log(message);
+    if (topic === "heartbeat") {
+        message = JSON.parse(message)
+        if (Date.now() - message.timestamp < 1000)
+            if (!workerNodes[message.address]) {
+                workerNodes[message.address] = message
+                console.log("New worker discovered. Worker List: ")
+                console.log(workerNodes);
+            }
+    } else if (topic === "request") {
+        message = JSON.parse(message)
+        console.log(message);
+        
+        let payload = [{
+            topic: "RESPONSE_RM_2_DM_DUMMY",
+            messages: JSON.stringify({
+                    "resource_id": message.resource_id,
+                    "timestamp": Date.now(),
+                    "nodes": [
+                        { node_id: getAddress(), port: null }]
+            }),
+            partition: 0
+        }]
+        producer.send(payload, () => {
+            console.log(`Replied`)
+        })
+    }
+})