feature heartbeat: evcloudsvc - evdaemon

opencv-motion-detect/evdaemon.cpp

@@ -59,12 +59,13 @@ private:
     mutex cacheLock;
     queue<string> eventQue;
     mutex eventQLock;
-    mutex cfgLock;
+
     mutex mutSubsystem;
 
     thread thHeartBeat;
     mutex mutHeartBeat;
-    bool bHeartBeatLive = false;
+    bool bGotHeartBeat = false;
+    int heartBeatTimeout = 60 * 1000;
 
 
     /// module gid to process id
@@ -660,6 +661,29 @@ private:
         return 0;
     }
 
+    void setUpDealer(){
+        lock_guard<mutex> lg(mutHeartBeat);
+        if(pDealer != nullptr) {
+            int i = 0;
+            zmq_setsockopt(pDealer, ZMQ_LINGER, &i, sizeof(i));
+            zmq_close(pDealer);
+            pDealer = nullptr;
+        }
+
+        if(pDealerCtx != nullptr) {
+            zmq_ctx_destroy(pDealerCtx);
+            pDealerCtx = nullptr;
+        }
+
+        int ret = 0;
+        ret = zmqhelper::setupDealer(&pDealerCtx, &pDealer, cloudAddr, devSn, heartBeatTimeout);
+        if(ret != 0) {
+            spdlog::error("evdaemon {} failed to setup dealer", devSn);
+            exit(1);
+        }
+        spdlog::info("evdaemon {} connecting to cloud {}", devSn, cloudAddr);
+    }
+
 protected:
 public:
     void run()
@@ -823,33 +847,45 @@ public:
             cloudAddr = strEnv;
         }
 
-        // setup dealer
-        ret = zmqhelper::setupDealer(&pDealerCtx, &pDealer, cloudAddr, devSn);
-        if(ret != 0) {
-            spdlog::error("evdaemon {} failed to setup dealer", devSn);
-            exit(1);
-        }
-        spdlog::info("evdaemon {} connecting to cloud {}", devSn, cloudAddr);
-        // setup cloud msg processor
+        setUpDealer();
 
+        // setup cloud msg processor
         thCloud = thread([this]() {
+            int cnt = 0;
             while(true) {
-                spdlog::info("evdaemon {} receiving evcloudsvc", this->devSn);
-                auto v = zmqhelper::z_recv_multiple(this->pDealer, true);
+                spdlog::info("evdaemon {} waiting msg from evcloudsvc", this->devSn);
+                auto v = zmqhelper::z_recv_multiple(this->pDealer, false);
                 if(v.size() == 0) {
-                    spdlog::error("evdaemon {} failed to receive msg {}, retrying", this->devSn, zmq_strerror(zmq_errno()));
-                    this_thread::sleep_for(chrono::seconds(3));
+                    if(cnt > 1) {
+                        // TODO: reset dealer socket;
+                        spdlog::error("evdaemon {} failed to receive from evcloudsvc, resetting connection: {}", this->devSn, zmq_strerror(zmq_errno()));
+                        this->setUpDealer();
+                        cnt = 0;
+                        continue;
+                    }
+                    cnt++;
                 }
                 else {
-                    handleCloudMsg(v);
+                    cnt = 0;
+                    this->handleCloudMsg(v);
                     spdlog::info("evdaemon {} successfully handled msg from evcloudsvc", this->devSn);
                 }
             }
         });
-
         thCloud.detach();
         spdlog::info("evdaemon {} cloud message processor had setup {}", devSn, cloudAddr);
-        ping(pDealer);
+
+        thHeartBeat = thread([this](){
+            while(true){
+                {
+                    lock_guard<mutex> lg(this->mutHeartBeat);
+                    if(this->pDealer != nullptr)
+                        this->ping(this->pDealer);
+                }
+                this_thread::sleep_for(chrono::milliseconds(this->heartBeatTimeout));
+            }
+        });
+        thHeartBeat.detach();
 
         this->thIdMain = this_thread::get_id();
     };

opencv-motion-detect/inc/utils.cpp

@@ -640,6 +640,7 @@ json getModulesOperFromConfDiff(json& oldConfig, json &newConfig, json &diff, st
                                 newMgr[mgrSn] = json();
                                 newMgr[mgrSn] = newConfig[mgrSn];
                             }
+                            
                             if(newMgr.size() != 0) {
                                 json jret = cfgutils::getModuleGidsFromCfg(sn, newMgr, "");
                                 spdlog::info("{}:{} getModuleGidsFromCfg dump: {}", __FILE__, __LINE__, jret.dump());

opencv-motion-detect/inc/zmqhelper.cpp

@@ -117,17 +117,24 @@ int setupRouter(void **ctx, void **s, string addr){
 
 /// setup dealer
 /// @return 0 success, otherwise failed
-int setupDealer(void **ctx, void **s, string addr, string ident) {
+int setupDealer(void **ctx, void **s, string addr, string ident, int timeout) {
     int ret = 0;
     *ctx = zmq_ctx_new();
     *s = zmq_socket(*ctx, ZMQ_DEALER);
     ret = 1;
     zmq_setsockopt(*s, ZMQ_TCP_KEEPALIVE, &ret, sizeof (ret));
-    ret = 5;
+    ret = 20;
     zmq_setsockopt(*s, ZMQ_TCP_KEEPALIVE_IDLE, &ret, sizeof (ret));
     zmq_setsockopt(*s, ZMQ_TCP_KEEPALIVE_INTVL, &ret, sizeof (ret));
     ret = 2;
     zmq_setsockopt(*s, ZMQ_TCP_KEEPALIVE_CNT, &ret, sizeof (ret));
+    if(timeout != 0) {
+        if(timeout == -1) {
+            timeout = 10*1000;
+        }
+        zmq_setsockopt(*s, ZMQ_RCVTIMEO, &timeout, sizeof(timeout));
+    }
+    
     ret = zmq_setsockopt(*s, ZMQ_IDENTITY, ident.c_str(), ident.size());
     ret += zmq_setsockopt (*s, ZMQ_ROUTING_ID, ident.c_str(), ident.size());
     if(ret < 0) {

opencv-motion-detect/inc/zmqhelper.hpp

@@ -63,7 +63,7 @@ int z_send_multiple(void *s, vector<vector<uint8_t> >&body);
 int setupRouter(void **ctx, void **s, string addr);
 /// setup dealer
 /// @return 0 success, otherwise failed
-int setupDealer(void **ctx, void **s, string addr, string ident);
+int setupDealer(void **ctx, void **s, string addr, string ident, int timeout = 0);
 /// recv config msg:
 /// @return 0 success, otherwise failed.
 int recvConfigMsg(void *s, json &config, string addr, string ident);