Include message and bytes metrics in the status of the active MQTT connections.

broker/src/main/java/io/moquette/connections/MqttConnectionMetrics.java

@@ -0,0 +1,38 @@
+package io.moquette.connections;
+
+/**
+ * A class that represents the metrics of a given MQTT connection.
+ * 
+ * @author lbarrios
+ *
+ */
+public class MqttConnectionMetrics {
+    private long readKb;
+    private long writtenKb;
+    private long readMessages;
+    private long writtenMessages;
+
+    public MqttConnectionMetrics(long readBytes, long writtenBytes, long readMessages, long writtenMessages) {
+        this.readKb = readBytes / 1024;
+        this.writtenKb = writtenBytes / 1024;
+        this.readMessages = readMessages;
+        this.writtenMessages = writtenMessages;
+    }
+
+    public long getReadKb() {
+        return readKb;
+    }
+
+    public long getWrittenKb() {
+        return writtenKb;
+    }
+
+    public long getReadMessages() {
+        return readMessages;
+    }
+
+    public long getWrittenMessages() {
+        return writtenMessages;
+    }
+
+}