package com.genersoft.iot.vmp.conf.redis;
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import com.alibaba.fastjson2.JSON;
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import com.genersoft.iot.vmp.common.CommonCallback;
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import com.genersoft.iot.vmp.conf.UserSetting;
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import com.genersoft.iot.vmp.conf.redis.bean.RedisRpcMessage;
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import com.genersoft.iot.vmp.conf.redis.bean.RedisRpcRequest;
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import com.genersoft.iot.vmp.conf.redis.bean.RedisRpcResponse;
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import com.genersoft.iot.vmp.media.zlm.ZlmHttpHookSubscribe;
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import com.genersoft.iot.vmp.service.redisMsg.control.RedisRpcController;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.data.redis.connection.Message;
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import org.springframework.data.redis.connection.MessageListener;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
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import org.springframework.stereotype.Component;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.Map;
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import java.util.Random;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.SynchronousQueue;
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import java.util.concurrent.TimeUnit;
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@Component
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public class RedisRpcConfig implements MessageListener {
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private final static Logger logger = LoggerFactory.getLogger(RedisRpcConfig.class);
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public final static String REDIS_REQUEST_CHANNEL_KEY = "WVP_REDIS_REQUEST_CHANNEL_KEY";
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private final Random random = new Random();
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@Autowired
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private UserSetting userSetting;
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@Autowired
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private RedisRpcController redisRpcController;
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@Autowired
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private RedisTemplate<Object, Object> redisTemplate;
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@Autowired
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private ZlmHttpHookSubscribe hookSubscribe;
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private ConcurrentLinkedQueue<Message> taskQueue = new ConcurrentLinkedQueue<>();
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@Qualifier("taskExecutor")
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@Autowired
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private ThreadPoolTaskExecutor taskExecutor;
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@Override
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public void onMessage(Message message, byte[] pattern) {
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boolean isEmpty = taskQueue.isEmpty();
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taskQueue.offer(message);
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if (isEmpty) {
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taskExecutor.execute(() -> {
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while (!taskQueue.isEmpty()) {
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Message msg = taskQueue.poll();
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try {
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RedisRpcMessage redisRpcMessage = JSON.parseObject(new String(msg.getBody()), RedisRpcMessage.class);
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if (redisRpcMessage.getRequest() != null) {
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handlerRequest(redisRpcMessage.getRequest());
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} else if (redisRpcMessage.getResponse() != null){
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handlerResponse(redisRpcMessage.getResponse());
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} else {
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logger.error("[redis rpc 解析失败] {}", JSON.toJSONString(redisRpcMessage));
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}
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} catch (Exception e) {
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logger.error("[redis rpc 解析异常] ", e);
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}
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}
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});
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}
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}
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private void handlerResponse(RedisRpcResponse response) {
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if (userSetting.getServerId().equals(response.getToId())) {
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return;
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}
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logger.info("[redis-rpc] << {}", response);
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response(response);
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}
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private void handlerRequest(RedisRpcRequest request) {
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try {
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if (userSetting.getServerId().equals(request.getFromId())) {
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return;
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}
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logger.info("[redis-rpc] << {}", request);
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Method method = getMethod(request.getUri());
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// 没有携带目标ID的可以理解为哪个wvp有结果就哪个回复，携带目标ID，但是如果是不存在的uri则直接回复404
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if (userSetting.getServerId().equals(request.getToId())) {
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if (method == null) {
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// 回复404结果
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RedisRpcResponse response = request.getResponse();
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response.setStatusCode(404);
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sendResponse(response);
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return;
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}
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RedisRpcResponse response = (RedisRpcResponse)method.invoke(redisRpcController, request);
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if(response != null) {
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sendResponse(response);
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}
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}else {
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if (method == null) {
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return;
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}
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RedisRpcResponse response = (RedisRpcResponse)method.invoke(redisRpcController, request);
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if (response != null) {
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sendResponse(response);
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}
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}
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}catch (InvocationTargetException | IllegalAccessException e) {
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logger.error("[redis rpc ] 处理请求失败 ", e);
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}
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}
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private Method getMethod(String name) {
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// 启动后扫描所有的路径注解
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Method[] methods = redisRpcController.getClass().getMethods();
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for (Method method : methods) {
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if (method.getName().equals(name)) {
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return method;
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}
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}
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return null;
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}
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private void sendResponse(RedisRpcResponse response){
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logger.info("[redis-rpc] >> {}", response);
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response.setToId(userSetting.getServerId());
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RedisRpcMessage message = new RedisRpcMessage();
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message.setResponse(response);
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redisTemplate.convertAndSend(REDIS_REQUEST_CHANNEL_KEY, message);
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}
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private void sendRequest(RedisRpcRequest request){
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logger.info("[redis-rpc] >> {}", request);
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RedisRpcMessage message = new RedisRpcMessage();
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message.setRequest(request);
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redisTemplate.convertAndSend(REDIS_REQUEST_CHANNEL_KEY, message);
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}
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private final Map<Long, SynchronousQueue<RedisRpcResponse>> topicSubscribers = new ConcurrentHashMap<>();
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private final Map<Long, CommonCallback<RedisRpcResponse>> callbacks = new ConcurrentHashMap<>();
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public RedisRpcResponse request(RedisRpcRequest request, int timeOut) {
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request.setSn((long) random.nextInt(1000) + 1);
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SynchronousQueue<RedisRpcResponse> subscribe = subscribe(request.getSn());
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try {
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sendRequest(request);
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return subscribe.poll(timeOut, TimeUnit.SECONDS);
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} catch (InterruptedException e) {
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logger.warn("[redis rpc timeout] uri: {}, sn: {}", request.getUri(), request.getSn(), e);
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} finally {
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this.unsubscribe(request.getSn());
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}
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return null;
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}
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public void request(RedisRpcRequest request, CommonCallback<RedisRpcResponse> callback) {
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request.setSn((long) random.nextInt(1000) + 1);
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setCallback(request.getSn(), callback);
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sendRequest(request);
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}
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public Boolean response(RedisRpcResponse response) {
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SynchronousQueue<RedisRpcResponse> queue = topicSubscribers.get(response.getSn());
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CommonCallback<RedisRpcResponse> callback = callbacks.get(response.getSn());
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if (queue != null) {
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try {
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return queue.offer(response, 2, TimeUnit.SECONDS);
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} catch (InterruptedException e) {
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logger.error("{}", e.getMessage(), e);
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}
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}else if (callback != null) {
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callback.run(response);
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callbacks.remove(response.getSn());
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}
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return false;
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}
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private void unsubscribe(long key) {
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topicSubscribers.remove(key);
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}
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private SynchronousQueue<RedisRpcResponse> subscribe(long key) {
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SynchronousQueue<RedisRpcResponse> queue = null;
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if (!topicSubscribers.containsKey(key))
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topicSubscribers.put(key, queue = new SynchronousQueue<>());
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return queue;
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}
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private void setCallback(long key, CommonCallback<RedisRpcResponse> callback) {
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// TODO 如果多个上级点播同一个通道会有问题
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callbacks.put(key, callback);
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}
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public void removeCallback(long key) {
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callbacks.remove(key);
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}
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public int getCallbackCount(){
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return callbacks.size();
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}
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// @Scheduled(fixedRate = 1000) //每1秒执行一次
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// public void execute(){
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// logger.info("callbacks的长度: " + callbacks.size());
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// logger.info("队列的长度: " + topicSubscribers.size());
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// logger.info("HOOK监听的长度: " + hookSubscribe.size());
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// logger.info("");
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// }
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}
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