Add simple connection management capabilities to the broker. An external codebase will now be able to monitor and close the opened connections.

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

@@ -0,0 +1,58 @@
+package io.moquette.connections;
+
+import java.util.Collection;
+
+/**
+ * This interface will be used by an external codebase to retrieve and close
+ * physical connections.
+ * 
+ * @author lbarrios
+ *
+ */
+public interface IConnectionsManager {
+	/**
+	 * Returns the number of physical connections
+	 * 
+	 * @return
+	 */
+	public int getActiveConnectionsNo();
+
+	/**
+	 * Determines wether a MQTT client is connected to the broker.
+	 * 
+	 * @param clientID
+	 * @return
+	 */
+	public boolean isConnected(String clientID);
+
+	/**
+	 * Returns the identifiers of the MQTT clients that are connected to the
+	 * broker.
+	 * 
+	 * @return
+	 */
+	public Collection<String> getConnectedClientIds();
+
+	/**
+	 * Closes a physical connection.
+	 * 
+	 * @param clientID
+	 * @param closeImmediately
+	 *            If false, the connection will be flushed before it is closed.
+	 * @return
+	 */
+	public boolean closeConnection(String clientID, boolean closeImmediately);
+	
+	/**
+	 * Returns the state of the session of a given client.
+	 * @param clientID
+	 * @return
+	 */
+	public MqttSession getSessionStatus(String clientID);
+	
+	/**
+	 * Returns the state of all the sessions
+	 * @return
+	 */
+	public Collection<MqttSession> getSessions();
+}

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

@@ -0,0 +1,70 @@
+package io.moquette.connections;
+
+import java.util.Collection;
+
+/**
+ * A class that represents the overall connection status of a MQTT session. Its
+ * instances will be used by an external codebase when the broker is configured
+ * in embedded mode.
+ * 
+ * @author lbarrios
+ *
+ */
+public class MqttSession {
+
+	private boolean connectionEstablished;
+	private boolean cleanSession;
+	private int inflightMessages;
+	private int pendingPublishMessagesNo;
+	private int secondPhaseAckPendingMessages;
+	private Collection<MqttSubscription> activeSubscriptions;
+
+	public boolean isConnectionEstablished() {
+		return connectionEstablished;
+	}
+
+	public void setConnectionEstablished(boolean connectionEstablished) {
+		this.connectionEstablished = connectionEstablished;
+	}
+
+	public boolean isCleanSession() {
+		return cleanSession;
+	}
+
+	public void setCleanSession(boolean cleanSession) {
+		this.cleanSession = cleanSession;
+	}
+	
+	public int getPendingPublishMessagesNo() {
+        return pendingPublishMessagesNo;
+    }
+	
+	public void setPendingPublishMessagesNo(int pendingPublishMessagesNo) {
+        this.pendingPublishMessagesNo = pendingPublishMessagesNo;
+    }
+
+	public int getInflightMessages() {
+		return inflightMessages;
+	}
+
+	public void setInflightMessages(int inflightMessages) {
+		this.inflightMessages = inflightMessages;
+	}
+
+	public int getSecondPhaseAckPendingMessages() {
+		return secondPhaseAckPendingMessages;
+	}
+
+	public void setSecondPhaseAckPendingMessages(int secondPhaseAckPendingMessages) {
+		this.secondPhaseAckPendingMessages = secondPhaseAckPendingMessages;
+	}
+
+	public Collection<MqttSubscription> getActiveSubscriptions() {
+		return activeSubscriptions;
+	}
+
+	public void setActiveSubscriptions(Collection<MqttSubscription> activeSubscriptions) {
+		this.activeSubscriptions = activeSubscriptions;
+	}
+
+}

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

@@ -0,0 +1,38 @@
+package io.moquette.connections;
+
+/**
+ * A class that represents a MQTT subscription. 
+ * 
+ * @author lbarrios
+ *
+ */
+public class MqttSubscription {
+    private final String requestedQos;
+    private final String clientId;
+    private final String topicFilter;
+    private final boolean active;
+
+    public MqttSubscription(String requestedQos, String clientId, String topicFilter, boolean active) {
+        this.requestedQos = requestedQos;
+        this.clientId = clientId;
+        this.topicFilter = topicFilter;
+        this.active = active;
+    }
+
+    public String getRequestedQos() {
+        return requestedQos;
+    }
+
+    public String getClientId() {
+        return clientId;
+    }
+
+    public String getTopicFilter() {
+        return topicFilter;
+    }
+
+    public boolean isActive() {
+        return active;
+    }
+
+}