Re-init MQTT if it failed last time, added log messages

code/components/jomjol_flowcontroll/ClassFlowMQTT.cpp

@@ -6,6 +6,7 @@
 #include "time_sntp.h"
 #include "interface_mqtt.h"
 #include "ClassFlowPostProcessing.h"
+#include "ClassLogFile.h"
 
 #include <time.h>
 
@@ -125,8 +126,12 @@ bool ClassFlowMQTT::ReadParameter(FILE* pfile, string& aktparamgraph)
         mainerrortopic = maintopic + "/connection";
         printf("Init MQTT with uri: %s, clientname: %s, user: %s, password: %s, maintopic: %s\n", uri.c_str(), clientname.c_str(), user.c_str(), password.c_str(), mainerrortopic.c_str());
         MQTTInit(uri, clientname, user, password, mainerrortopic, 60); 
-        MQTTPublish(mainerrortopic, "connected", SetRetainFlag);
-        MQTTenable = true;
+        if (MQTTPublish(mainerrortopic, "connected", SetRetainFlag)) {
+            MQTTenable = true;
+        }
+        else {
+            MQTTenable = true;
+        }
     }
    
     return true;
@@ -141,8 +146,19 @@ string ClassFlowMQTT::GetMQTTMainTopic()
 
 bool ClassFlowMQTT::doFlow(string zwtime)
 {
-    if (!MQTTenable)
-        return true;
+    if (!MQTTenable) {
+        LogFile.WriteToFile("MQTT not enabled!");
+
+        // Try again to init it
+        MQTTInit(this->uri, this->clientname, this->user, this->password, this->mainerrortopic, 60); 
+        if (MQTTPublish(mainerrortopic, "connected", SetRetainFlag)) {
+            MQTTenable = true;
+        }
+        else { // Failed
+            return true; // We need to return true despite we failed, else it will retry 5x and then reboot!
+        }
+    }
+    LogFile.WriteToFile("MQTT enabled");
 
     std::string result;
     std::string resulterror = "";
@@ -153,7 +169,12 @@ bool ClassFlowMQTT::doFlow(string zwtime)
     string zw = "";
     string namenumber = "";
 
-    MQTTPublish(mainerrortopic, "connected");
+    if (MQTTPublish(mainerrortopic, "connected")) {
+        MQTTenable = true;
+    }
+    else { // Failed, skip other topics
+        return true; // We need to return true despite we failed, else it will retry 5x and then reboot!
+    }
     
     zw = maintopic + "/" + "uptime";
     char uptimeStr[11];

code/components/jomjol_mqtt/interface_mqtt.cpp

@@ -19,18 +19,29 @@ esp_mqtt_event_id_t esp_mmqtt_ID = MQTT_EVENT_ANY;
 bool mqtt_connected = false;
 esp_mqtt_client_handle_t client = NULL;
 
-void MQTTPublish(std::string _key, std::string _content, int retained_flag){
-    if (client && mqtt_connected) {
-        int msg_id;
-        std::string zw;
-        msg_id = esp_mqtt_client_publish(client, _key.c_str(), _content.c_str(), 0, 1, retained_flag);
-        zw = "sent publish successful in MQTTPublish, msg_id=" + std::to_string(msg_id) + ", " + _key + ", " + _content;
-        if (debugdetail) LogFile.WriteToFile(zw);
-        ESP_LOGD(TAG_INTERFACEMQTT, "sent publish successful in MQTTPublish, msg_id=%d, %s, %s", msg_id, _key.c_str(), _content.c_str());
-    }
-    else {
+bool MQTTPublish(std::string _key, std::string _content, int retained_flag){
+    if (!client) {
+        LogFile.WriteToFile("MQTT - client not initialized!");  
+        return false;      
+    }
+
+    if (!mqtt_connected) {
+        LogFile.WriteToFile("MQTT - Can not publish, not connected!");
         ESP_LOGW(TAG_INTERFACEMQTT, "Problem with Publish, client=%d, mqtt_connected %d", (int) client, (int) mqtt_connected);
+        return false;            
     }
+
+    int msg_id;
+    std::string zw;
+    msg_id = esp_mqtt_client_publish(client, _key.c_str(), _content.c_str(), 0, 1, retained_flag);
+    if (msg_id < 0) {
+        LogFile.WriteToFile("MQTT - Failed to publish + " + _key + ", no connection!");
+        return false;
+    }
+    zw = "MQTT - sent publish successful in MQTTPublish, msg_id=" + std::to_string(msg_id) + ", " + _key + ", " + _content;
+    if (debugdetail) LogFile.WriteToFile(zw);
+    ESP_LOGD(TAG_INTERFACEMQTT, "sent publish successful in MQTTPublish, msg_id=%d, %s, %s", msg_id, _key.c_str(), _content.c_str());
+    return true;
 }
 
 
@@ -105,12 +116,15 @@ void MQTTInit(std::string _mqttURI, std::string _clientid, std::string _user, st
         .keepalive = _keepalive
     };
 
+    LogFile.WriteToFile("MQTT - Init");
+
     if (_user.length() && _password.length()){
         mqtt_cfg.username = _user.c_str();
         mqtt_cfg.password = _password.c_str();
         ESP_LOGI(TAG_INTERFACEMQTT, "Connect to MQTT: %s, %s", mqtt_cfg.username, mqtt_cfg.password);
     };
 
+    MQTTdestroy();
     client = esp_mqtt_client_init(&mqtt_cfg);
     if (client)
     {
@@ -119,11 +133,13 @@ void MQTTInit(std::string _mqttURI, std::string _clientid, std::string _user, st
         if (esp_mqtt_client_start(client) != ESP_OK)
             LogFile.WriteToFile("MQTT - Could not start client!");
 
-        MQTTPublish(_LWTContext, "", 1);
+        if(MQTTPublish(_LWTContext, "", 1)) {
+            LogFile.WriteToFile("MQTT - Client init successful");
+        }
     }
     else
     {
-        LogFile.WriteToFile("MQTT - Could not Init MQTT Client!");
+        LogFile.WriteToFile("MQTT - Could not Init client!");
     }
 
 }
@@ -185,6 +201,7 @@ void MQTTregisterSubscribeFunction(std::string topic, std::function<bool(std::st
 
 void MQTTconnected(){
     if (mqtt_connected) {
+        LogFile.WriteToFile("MQTT - Connected");
         if (connectFunktionMap != NULL) {
             for(std::map<std::string, std::function<void()>>::iterator it = connectFunktionMap->begin(); it != connectFunktionMap->end(); ++it) {
                 it->second();
@@ -196,6 +213,7 @@ void MQTTconnected(){
             for(std::map<std::string, std::function<bool(std::string, char*, int)>>::iterator it = subscribeFunktionMap->begin(); it != subscribeFunktionMap->end(); ++it) {
                 int msg_id = esp_mqtt_client_subscribe(client, it->first.c_str(), 0);
                 ESP_LOGD(TAG_INTERFACEMQTT, "topic %s subscribe successful, msg_id=%d", it->first.c_str(), msg_id);
+                LogFile.WriteToFile("MQTT - topic " + it->first + " subscribe successful, msg_id=" + std::to_string(msg_id));
             }
         }
     }

code/components/jomjol_mqtt/interface_mqtt.h

@@ -10,7 +10,7 @@ void MQTTdestroy();
 
 //void MQTTInit(std::string _mqttURI, std::string _clientid, std::string _user = "", std::string _password = "");
 
-void MQTTPublish(std::string _key, std::string _content, int retained_flag = 1);            // retained Flag as Standart
+bool MQTTPublish(std::string _key, std::string _content, int retained_flag = 1);            // retained Flag as Standart
 
 bool MQTTisConnected();
 

code/sdkconfig

@@ -1028,7 +1028,7 @@ CONFIG_MQTT_TRANSPORT_SSL=y
 CONFIG_MQTT_TRANSPORT_WEBSOCKET=y
 CONFIG_MQTT_TRANSPORT_WEBSOCKET_SECURE=y
 # CONFIG_MQTT_MSG_ID_INCREMENTAL is not set
-# CONFIG_MQTT_SKIP_PUBLISH_IF_DISCONNECTED is not set
+CONFIG_MQTT_SKIP_PUBLISH_IF_DISCONNECTED is not set
 # CONFIG_MQTT_REPORT_DELETED_MESSAGES is not set
 # CONFIG_MQTT_USE_CUSTOM_CONFIG is not set
 # CONFIG_MQTT_TASK_CORE_SELECTION_ENABLED is not set

code/sdkconfig.esp32cam

@@ -1036,7 +1036,7 @@ CONFIG_MQTT_TRANSPORT_SSL=y
 CONFIG_MQTT_TRANSPORT_WEBSOCKET=y
 CONFIG_MQTT_TRANSPORT_WEBSOCKET_SECURE=y
 # CONFIG_MQTT_MSG_ID_INCREMENTAL is not set
-# CONFIG_MQTT_SKIP_PUBLISH_IF_DISCONNECTED is not set
+CONFIG_MQTT_SKIP_PUBLISH_IF_DISCONNECTED=y
 # CONFIG_MQTT_REPORT_DELETED_MESSAGES is not set
 # CONFIG_MQTT_USE_CUSTOM_CONFIG is not set
 # CONFIG_MQTT_TASK_CORE_SELECTION_ENABLED is not set