service for complex look up

nodejs/models/socket_server_json.js

@@ -0,0 +1,89 @@
+'use strict';
+
+const net = require('net');
+const fs = require('fs');
+const {CallbackQueue} = require('../utils/callback_queue')
+
+class SocketServerJson {
+	constructor(args){
+		this.socketFile = args.socketFile;
+		this.onData = new CallbackQueue(args.onData, this);
+		this.onListen = new CallbackQueue(args.onListen, this);
+		this.onError = new CallbackQueue(args.onError);
+		this.onCLientNew = new CallbackQueue(args.onCLientNew);
+		this.onCLientClose = new CallbackQueue(args.onCLientClose);
+		this.onCLientError = new CallbackQueue(args.onCLientClose);
+
+		this.onListen.push(function(){
+			fs.chmodSync(args.socketFile, '777');
+		})
+
+		this.listen();
+
+	}
+
+	__resetSocketFile(callback){
+		let instance = this;
+
+		fs.stat(this.socketFile, function (err, stats) {
+			if (stats) {
+				fs.unlink(instance.socketFile, function(err){
+					if(err){
+						// This should never happen.
+						console.error(err);
+					}
+					callback(...arguments)
+				});
+			}else{
+				callback()
+			}
+
+		});
+	}
+
+
+	__setUpServer(){
+
+		let instance = this;
+		this.socket = net.createServer();
+
+		this.socket.on('connection', function(clientSocket){
+			let buffer = '';
+
+			clientSocket.on('data', function(data){
+				buffer += data.toString();
+				try{
+					console.log('buffer', buffer)
+					instance.onData.call(JSON.parse(data), clientSocket)
+					buffer = ''
+					// clientSocket.write(JSON.stringify(Host.lookUp(buffer)|| {host: 'none'}));
+
+				}catch(error){
+					;
+				}
+			});
+
+			clientSocket.on('close', instance.onCLientClose.call.bind(instance.onCLientClose));
+
+			clientSocket.on('error', instance.onCLientError.call.bind(instance.onCLientError));
+
+		});
+
+		this.socket.on('error', this.onError.call.bind(this.onError))
+
+		this.socket.on('listening', this.onListen.call.bind(this.onListen));
+	}
+
+	listen(){
+		let instance = this;
+
+		this.__setUpServer();
+
+		this.__resetSocketFile(function(){
+			instance.socket.listen(instance.socketFile);
+		});
+
+	}
+};
+
+module.exports = {SocketServerJson};