Reduce verbosity of MQTT connection attempts

dcdbpusher/MQTTPusher.cpp

@@ -85,14 +85,20 @@ MQTTPusher::~MQTTPusher() {
 void MQTTPusher::push() {
 	int      mosqErr;
 	uint64_t idleTime = 0;
+	int      connectTimer = 0;
+
 	//connect to broker (if necessary)
 	while (_keepRunning && !_connected) {
 		if (mosquitto_connect(_mosq, _brokerHost.c_str(), _brokerPort, 1000) != MOSQ_ERR_SUCCESS) {
-			LOGM(error) << "Could not connect to MQTT broker " << _brokerHost << ":" << _brokerPort;
-			sleep(1);
+			if (connectTimer == 0) {
+				LOGM(warning) << "Could not connect to MQTT broker " << _brokerHost << ":" << _brokerPort;
+			}
+			connectTimer++;
+			sleep(5);
 		} else {
 			_connected = true;
-			LOGM(info) << "Connection established!";
+			LOGM(info) << "Connection to MQTT broker " << _brokerHost << ":" << _brokerPort << " established!";
+			connectTimer = 0;
 		}
 	}
 
@@ -113,13 +119,17 @@ void MQTTPusher::push() {
 
 		//there was a (unintended) disconnect in the meantime --> reconnect
 		if (!_connected) {
-			LOGM(error) << "Lost connection. Reconnecting...";
+			if (connectTimer == 0) {
+				LOGM(info) << "Lost connection. Reconnecting...";
+			}
 			if (mosquitto_reconnect(_mosq) != MOSQ_ERR_SUCCESS) {
-				LOGM(error) << "Could not reconnect to MQTT broker " << _brokerHost << ":" << _brokerPort << std::endl;
+//				LOGM(debug) << "Could not reconnect to MQTT broker " << _brokerHost << ":" << _brokerPort << std::endl;
+				connectTimer++;
 				sleep(5);
 			} else {
 				_connected = true;
-				LOGM(info) << "Connection established!";
+				LOGM(info) << "Connection to MQTT broker " << _brokerHost << ":" << _brokerPort << " established!";
+				connectTimer = 0;
 			}
 		}
 
@@ -209,7 +219,7 @@ int MQTTPusher::sendReadings(SensorBase &s, reading_t *reads, std::size_t &total
 		if (rc == MOSQ_ERR_NOMEM) {
 			LOGM(info) << "Can\'t queue additional messages";
 		} else {
-			LOGM(error) << "Could not send message: " << mosquitto_strerror(rc) << " Trying again later";
+			LOGM(debug) << "Could not send message: " << mosquitto_strerror(rc) << " Trying again later";
 			_connected = false;
 		}
 		s.pushReadingQueue(reads, count);