package org.jeecg.modules.dry.websocket;
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import cn.hutool.core.bean.BeanUtil;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import lombok.extern.slf4j.Slf4j;
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import org.jeecg.common.constant.DrySocketConst;
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import org.jeecg.common.util.SpringContextUtils;
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import org.jeecg.modules.dry.service.IDryRealTimeDataService;
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import org.jeecg.modules.dry.vo.RealTimeDataVo;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import javax.websocket.OnClose;
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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.PathParam;
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import javax.websocket.server.ServerEndpoint;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.Map;
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@Slf4j
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@Component
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@ServerEndpoint("/drySocket/{tenantId}/{machineId}")
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public class DrySocket {
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/**
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* 当前 session
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*/
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private Session session;
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/**
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* 当前租户id
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*/
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private String tenantId;
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/**
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* 设备id，用于标识同一租户，不同设备的数据
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*/
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private String machineId;
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/**
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* 当前socket唯一id
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*/
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private String socketId;
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/**
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* 租户连接池，包含单个租户的所有socket连接；
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* 因为一个租户可能打开多个设备，多个设备就会有多个连接；
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* key是tenantId，value是Map对象；子Map的key是machineId，value是drySocket对象
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*/
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private static Map<String, Map<String, DrySocket>> tenantPool = new HashMap<>();
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/**
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* 连接池，包含所有WebSocket连接；
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* key是socketId，value是drySocket对象
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*/
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private static Map<String, DrySocket> machinePool = new HashMap<>();
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/**
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* 获取某个租户所有的设备
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*/
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public static Map<String, DrySocket> getTenantPool(String tenantId) {
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return tenantPool.computeIfAbsent(tenantId, k -> new HashMap<>(5));
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}
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/**
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* 向当前租户发送消息
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*
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* @param message 消息内容
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*/
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public void sendMessage(String message) {
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try {
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this.session.getAsyncRemote().sendText(message);
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} catch (Exception e) {
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log.error("【drySocket】消息发送失败：" + e.getMessage());
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}
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}
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/**
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* 封装消息json
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*
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* @param data 消息内容
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*/
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public static String packageMessage(String type, Object data) {
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JSONObject message = new JSONObject();
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message.put(DrySocketConst.TYPE, type);
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message.put(DrySocketConst.DATA, data);
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return message.toJSONString();
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}
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/**
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* 向指定租户的所有设备发送消息
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*
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* @param tenantId 接收消息的租户ID
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* @param message 消息内容
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*/
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public static void sendMessageTo(String tenantId, String message) {
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Collection<DrySocket> values = getTenantPool(tenantId).values();
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if (values.size() > 0) {
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for (DrySocket socketItem : values) {
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socketItem.sendMessage(message);
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}
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} else {
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log.warn("【drySocket】消息发送失败：tenantId\"" + tenantId + "\"不存在或未在线！");
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}
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}
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/**
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* 向指定租户的指定设备发送消息
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*
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* @param tenantId 接收消息的租户ID
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* @param message 消息内容
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*/
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public static void sendMessageTo(String tenantId, String machineId, String message) {
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DrySocket socketItem = getTenantPool(tenantId).get(machineId);
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if (socketItem != null) {
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socketItem.sendMessage(message);
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} else {
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log.warn("【drySocket】消息发送失败：tenantId\"" + tenantId + "\"的machineId\"" + machineId + "\"不存在或未在线！");
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}
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}
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/**
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* 向多个租户的所有设备发送消息
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*
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* @param tenantIds 接收消息的租户ID数组
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* @param message 消息内容
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*/
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public static void sendMessageTo(String[] tenantIds, String message) {
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for (String tenantId : tenantIds) {
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DrySocket.sendMessageTo(tenantId, message);
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}
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}
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/**
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* 向所有租户的所有设备发送消息
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*
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* @param message 消息内容
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*/
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public static void sendMessageToAll(String message) {
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for (DrySocket socketItem : machinePool.values()) {
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socketItem.sendMessage(message);
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}
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}
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/**
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* websocket 开启连接
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*/
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@OnOpen
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public void onOpen(Session session, @PathParam("tenantId") String tenantId, @PathParam("machineId") String machineId) {
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try {
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this.tenantId = tenantId;
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this.machineId = machineId;
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this.socketId = tenantId + machineId;
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this.session = session;
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machinePool.put(this.socketId, this);
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getTenantPool(tenantId).put(this.machineId, this);
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log.info("【drySocket】有新的连接，总数为:" + machinePool.size());
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} catch (Exception ignored) {
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}
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}
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/**
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* websocket 断开连接
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*/
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@OnClose
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public void onClose() {
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try {
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machinePool.remove(this.socketId);
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getTenantPool(this.tenantId).remove(this.machineId);
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log.info("【drySocket】连接断开，总数为:" + machinePool.size());
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} catch (Exception ignored) {
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}
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}
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/**
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* websocket 收到消息
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*/
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@OnMessage
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public void onMessage(String message) {
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log.info("【drySocket】onMessage:" + message);
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IDryRealTimeDataService realTimeDataService = SpringContextUtils.getBean(IDryRealTimeDataService.class);
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JSONObject json;
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try {
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json = JSON.parseObject(message);
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} catch (Exception e) {
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log.warn("【drySocket】收到不合法的消息:" + message);
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return;
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}
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String type = json.getString(DrySocketConst.TYPE);
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switch (type) {
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// 心跳检测
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case DrySocketConst.TYPE_HB:
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this.sendMessage(DrySocket.packageMessage(type, true));
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break;
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// 实时数据处理
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case DrySocketConst.TYPE_RDT:
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Object o = json.get(DrySocketConst.DATA);
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RealTimeDataVo realTimeDataVo = BeanUtil.toBean(o, RealTimeDataVo.class);
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realTimeDataService.realTimeDataHandle(realTimeDataVo);
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break;
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default:
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log.warn("【drySocket】收到不识别的消息类型:" + type);
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break;
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}
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}
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}
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