MQTTS metrics

common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportContext.java

@@ -88,20 +88,30 @@ public class MqttTransportContext extends TransportContext {
     @Value("${transport.mqtt.proxy_enabled:false}")
     private boolean proxyEnabled;
 
-    private final AtomicInteger connectionsCounter = new AtomicInteger();
+    private final AtomicInteger connectionsActiveCounterMQTT = new AtomicInteger();
+    private final AtomicInteger connectionsActiveCounterMQTTS = new AtomicInteger();
 
     @PostConstruct
     public void init() {
         super.init();
-        transportService.createGaugeStats("openConnections", connectionsCounter);
+        transportService.createGaugeStats("connections_active", connectionsActiveCounterMQTT, "protocol", "MQTT");
+        transportService.createGaugeStats("connections_active", connectionsActiveCounterMQTTS, "protocol", "MQTTS");
     }
 
-    public void channelRegistered() {
-        connectionsCounter.incrementAndGet();
+    public void channelRegistered(boolean isSSL) {
+        if  (isSSL) {
+            connectionsActiveCounterMQTTS.incrementAndGet();
+        } else {
+            connectionsActiveCounterMQTT.incrementAndGet();
+        }
     }
 
-    public void channelUnregistered() {
-        connectionsCounter.decrementAndGet();
+    public void channelUnregistered(boolean isSSL) {
+        if  (isSSL) {
+            connectionsActiveCounterMQTTS.decrementAndGet();
+        } else {
+            connectionsActiveCounterMQTT.decrementAndGet();
+        }
     }
 
     public boolean checkAddress(InetSocketAddress address) {

common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java

@@ -180,16 +180,20 @@ public class MqttTransportHandler extends ChannelInboundHandlerAdapter implement
         this.rpcAwaitingAck = new ConcurrentHashMap<>();
     }
 
+    boolean isSSL() {
+        return sslHandler != null;
+    }
+
     @Override
     public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
         super.channelRegistered(ctx);
-        context.channelRegistered();
+        context.channelRegistered(isSSL());
     }
 
     @Override
     public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
         super.channelUnregistered(ctx);
-        context.channelUnregistered();
+        context.channelUnregistered(isSSL());
     }
 
     @Override

common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/TransportService.java

@@ -161,5 +161,5 @@ public interface TransportService {
 
     boolean hasSession(SessionInfoProto sessionInfo);
 
-    void createGaugeStats(String openConnections, AtomicInteger connectionsCounter);
+    void createGaugeStats(String openConnections, AtomicInteger connectionsCounter, String... tags);
 }

common/transport/transport-api/src/main/java/org/thingsboard/server/common/transport/service/DefaultTransportService.java

@@ -1257,9 +1257,21 @@ public class DefaultTransportService extends TransportActivityManager implements
     }
 
     @Override
-    public void createGaugeStats(String statsName, AtomicInteger number) {
-        statsFactory.createGauge(StatsType.TRANSPORT + "." + statsName, number);
-        statsMap.put(statsName, number);
+    public void createGaugeStats(String statsName, AtomicInteger number, String... tags) {
+        String key = "thingsboard" + "." + StatsType.TRANSPORT.getName() + "." + statsName;
+        statsFactory.createGauge(key, number, tags);
+        statsMap.put(statsName + TagsKey(tags), number);
+    }
+
+    String TagsKey(String... tags) {
+        if (tags == null || tags.length < 2) return "";
+        StringBuilder sb = new StringBuilder("[");
+        for (int i = 0; i < tags.length; i += 2) {
+            if (i > 0) sb.append(',');
+            sb.append(tags[i]).append('=').append(i + 1 < tags.length ? tags[i + 1] : "");
+        }
+        sb.append(']');
+        return sb.toString();
     }
 
     @Scheduled(fixedDelayString = "${transport.stats.print-interval-ms:60000}")