refactor communitation archtecture to use evdamon only

opencv-motion-detect/database.cpp

@@ -386,7 +386,6 @@ togo_end:
             spdlog::warn("no local sn set. create a new one: {}", sn);
             auto tsNow = chrono::duration_cast<chrono::seconds>(chrono::system_clock::now().time_since_epoch()).count();
             info["lastboot"] = tsNow;
-            info["updatetime"] = tsNow;
             ret = setSn(info, fileName);
             if(ret < 0) {
                 spdlog::error("failed to save new generated sn");

opencv-motion-detect/evdaemon.cpp

@@ -52,29 +52,55 @@ class EvDaemon{
         this->devSn = this->info["sn"];
         /// req config
         json jret = cloudutils::reqConfig(this->info);
-        spdlog::info("evmgr {} got cloud config:\n{}", devSn, jret.dump(4));
         // apply config
         try{
             if(jret["code"] != 0) {
-                spdlog::error("evdaemon {} reqConfig error: {}", this->devSn, jret["msg"].get<string>());
+                spdlog::error("evdaemon {} request cloud configration error: {}", this->devSn, jret["msg"].get<string>());
                 return 2;
             }
 
+            spdlog::info("evmgr {} got cloud config:\n{}", devSn, jret.dump(4));
+
             json &data = jret["data"];
             for(auto &[k,v]:data.items()) {
                 if(k == this->devSn) {
                     // startup evmgr
-                    pid_t pid = fork();
+                    pid_t pid;
+                    if( (pid = fork()) == -1 ) {
+                        spdlog::error("evdamon {} failed to fork subsytem - evmgr", this->devSn);
+                    }else if(pid == 0) {
+                        // child
+                        // execl("./evmgr", "arg1", "arg2", (char *)0);
+                        ret = setenv("ADDR", v["addr"].get<string>().c_str(), 1);
+                        ret += setenv("SN", v["sn"].get<string>().c_str(), 1);
+                        ret += setenv("PORT_ROUTER", to_string(v["port-router"].get<int>()).c_str(), 1);
+                        ret += setenv("PORT_CLOUD", to_string(v["port-cloud"].get<int>()).c_str(), 1);
+                        ret += setenv("ADDR_CLOUD", v["mqtt-cloud"].get<string>().c_str(), 1);
+                        if(ret < 0) {
+                            spdlog::error("evdaemon {} failed to set env", this->devSn);
+                            return -3;
+                        }
+                        execl("./evmgr", NULL, NULL, NULL);
+                        spdlog::error("evdaemon {} failed to startup evmgr", this->devSn);
+                    }else{
+                        // parent
+                        spdlog::info("evdaemon {} created evmgr", this->devSn);
+                    }
+                }
 
-                    ret = system("./evmgr");
-                    if(ret == -1) {
-                        spdlog::error("evdaemon {} failed to start evmgr", this->devSn);
-                        break;
+                // startup other submodules
+
+                json &ipcs = v["ipcs"];
+                for(auto &ipc : ipcs) {
+                    json &modules = ipc["modules"];
+                    for(auto &[mn, ml] : modules.items()) {
+                        //
+                        if()
                     }
                 }
             }
         }catch(exception &e) {
-            spdlog::error("evdaemon {} exception to reload and apply configuration:\n{}", this->devSn, jret.dump(4));
+            spdlog::error("evdaemon {} exception {} to reload and apply configuration:\n{}", this->devSn, e.what(), jret.dump(4));
             return -1;
         }
 
@@ -89,6 +115,7 @@ class EvDaemon{
                     spdlog::error("evdaemon {} failed to setup subsystems, please check log for more info", this->devSn);
                 }
                 this_thread::sleep_for(chrono::seconds(5));
+                break;
             }
         });
     }
@@ -184,7 +211,13 @@ class EvDaemon{
     ~EvDaemon(){};
 };
 
+void cleanup(int signal) {
+  int status;
+  while (waitpid((pid_t) (-1), 0, WNOHANG) > 0) {}
+}
+
 int main(){
+    signal(SIGCHLD, cleanup);
     json info;
     LVDB::getSn(info);
     spdlog::info("evdaemon: \n{}",info.dump(4));

opencv-motion-detect/inc/utils.hpp

@@ -73,7 +73,7 @@ json reqConfig(json &info){
       Uri uri=Uri::Parse(api);
       string sn = info.at("sn").get<string>();
       if(uri.Host.empty()||uri.Port.empty()||uri.Protocol.find("http") == string::npos) {
-         string msg = "reqConfig error. invalid api-cloud in info: " + api;
+         string msg = string(__FILE__) +":" + to_string(__LINE__) + ": request cloud configuration error. invalid api-cloud in info: " + api;
          ret["code"] = 1;
          ret["msg"] = msg;
          spdlog::error(msg);
@@ -85,8 +85,21 @@ json reqConfig(json &info){
       Client cli(uri.Host.c_str(), stoi(uri.Port));
 
       auto res = cli.Get("/config", Headers(), params);
+      if(res == nullptr || res->status != 200) {
+         const char *msg = NULL;
+         if(res == nullptr) {
+            msg = (string("error to connect to server: ") + api + "/config").c_str();
+            ret["code"] = -2;
+         }else{
+            msg = httplib::detail::status_message(res->status);
+            ret["code"] = res->status;
+         }
+         spdlog::debug("failed to reqConfig. {}", msg);         
+         ret["msg"] = msg;
+      }else{
          spdlog::debug("{} {} registry res from cloud : {}", __FILE__, __LINE__, res->body);
          ret = json::parse(res->body);
+      }
    }catch(exception &e) {
       ret["code"] = -1;
       string msg = string(__FILE__) + ":" + to_string(__LINE__) + string(": registry exception - ") + e.what();