package com.fgkj.services;
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/*
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* Copyright © reserved by roomdis.com, service for tgn company whose important business is rural e-commerce.
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*/
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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import java.net.SocketException;
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import java.net.UnknownHostException;
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import java.nio.ByteBuffer;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import javax.websocket.OnClose;
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import javax.websocket.OnError;
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import javax.websocket.OnMessage;
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import javax.websocket.OnOpen;
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import javax.websocket.Session;
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import javax.websocket.server.ServerEndpoint;
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import org.apache.log4j.Logger;
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import org.springframework.web.context.ContextLoader;
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import com.google.gson.Gson;
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/**
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* @author shihuc
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* @date 2017年8月22日 下午2:20:18
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*/
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@ServerEndpoint("/websocket")
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public class WebsocketService {
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private static Logger logger = Logger.getLogger(WebsocketService.class);
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//private HttpSendService httpSendService;
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private String videoRecServerHost = "10.90.7.10";
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private int videoRecServerPort = 7667;
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/*
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* 当存在多个客户端访问时，为了保证会话继续保持，将连接缓存。
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*/
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private static Map<String, WebsocketService> webSocketMap = new ConcurrentHashMap<String, WebsocketService>();
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private Session session;
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private static final WebsocketService instance = new WebsocketService();
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public static final WebsocketService getInstance() {
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return instance;
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}
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@OnMessage
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public void onTextMessage(String message, Session session) throws IOException, InterruptedException {
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// Print the client message for testing purposes
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logger.info("Received: " + message);
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//TODO: 调用接口将消息发送给客户端后台服务系统
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Gson gson = new Gson();
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//KefuMessage kfMsg = gson.fromJson(message, KefuMessage.class);
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//httpSendService = ContextLoader.getCurrentWebApplicationContext().getBean(HttpSendService.class);
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}
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/**
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* 主要用来接受二进制数据。
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*
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* @author shihuc
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* @param message
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* @param session
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* @throws IOException
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* @throws InterruptedException
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*/
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@OnMessage
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public void onBinaryMessage(ByteBuffer message, Session session, boolean last) throws IOException, InterruptedException {
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byte [] sentBuf = message.array();
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logger.info("Binary Received: " + sentBuf.length + ", last: " + last);
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//下面的代码逻辑，是用UDP协议发送视频流数据到视频处理服务器做后续逻辑处理
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//sendToVideoRecognizer(sentBuf);
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}
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/**
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* @author shihuc
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* @param sentBuf
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* @throws SocketException
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* @throws UnknownHostException
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* @throws IOException
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*/
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private void sendToVideoRecognizer(byte[] sentBuf) throws SocketException, UnknownHostException, IOException {
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DatagramSocket client = new DatagramSocket();
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InetAddress addr = InetAddress.getByName(videoRecServerHost);
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DatagramPacket sendPacket = new DatagramPacket(sentBuf, sentBuf.length, addr, videoRecServerPort);
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client.send(sendPacket);
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client.close();
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}
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// @OnOpen
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// public void onOpen(Session session){
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// this.session = session;
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// String staffId = session.getQueryString();
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// webSocketMap.put(staffId, this);
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// logger.info(staffId + " client opened");
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// }
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@OnOpen
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public void onOpen(Session session){
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logger.info("client opened: " + session.toString());
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}
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@OnClose
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public void onClose() {
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logger.info("client onclose");
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}
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@OnError
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public void onError(Session session, Throwable error){
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logger.info("connection onError");
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logger.info(error.getCause());
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}
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public boolean sendMessage(String message, String staffId) throws IOException{
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WebsocketService client = webSocketMap.get(staffId);
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if (client == null) {
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return false;
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}
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boolean result=false;
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try {
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client.session.getBasicRemote().sendText(message);
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result=true;
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} catch (IOException e) {
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try {
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client.session.close();
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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}
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return result;
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}
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}
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