org.apache.activemq.artemis.spi.core.protocol.AbstractRemotingConnection Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).
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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.artemis.spi.core.protocol;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.Executor;

import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.ActiveMQException;
import org.apache.activemq.artemis.api.core.ActiveMQInterruptedException;
import org.apache.activemq.artemis.core.client.ActiveMQClientLogger;
import org.apache.activemq.artemis.core.client.ActiveMQClientMessageBundle;
import org.apache.activemq.artemis.core.remoting.CloseListener;
import org.apache.activemq.artemis.core.remoting.FailureListener;
import org.apache.activemq.artemis.spi.core.remoting.Connection;

public abstract class AbstractRemotingConnection implements RemotingConnection
{
   protected final List failureListeners = new CopyOnWriteArrayList();
   protected final List closeListeners = new CopyOnWriteArrayList();
   protected final Connection transportConnection;
   protected final Executor executor;
   protected final long creationTime;
   protected volatile boolean dataReceived;

   public AbstractRemotingConnection(final Connection transportConnection, final Executor executor)
   {
      this.transportConnection = transportConnection;
      this.executor = executor;
      this.creationTime = System.currentTimeMillis();
   }

   public List getFailureListeners()
   {
      return new ArrayList(failureListeners);
   }

   protected void callFailureListeners(final ActiveMQException me, String scaleDownTargetNodeID)
   {
      final List listenersClone = new ArrayList(failureListeners);

      for (final FailureListener listener : listenersClone)
      {
         try
         {
            listener.connectionFailed(me, false, scaleDownTargetNodeID);
         }
         catch (ActiveMQInterruptedException interrupted)
         {
            // this is an expected behaviour.. no warn or error here
            ActiveMQClientLogger.LOGGER.debug("thread interrupted", interrupted);
         }
         catch (final Throwable t)
         {
            // Failure of one listener to execute shouldn't prevent others
            // from
            // executing
            ActiveMQClientLogger.LOGGER.errorCallingFailureListener(t);
         }
      }
   }


   protected void callClosingListeners()
   {
      final List listenersClone = new ArrayList(closeListeners);

      for (final CloseListener listener : listenersClone)
      {
         try
         {
            listener.connectionClosed();
         }
         catch (final Throwable t)
         {
            // Failure of one listener to execute shouldn't prevent others
            // from
            // executing
            ActiveMQClientLogger.LOGGER.errorCallingFailureListener(t);
         }
      }
   }

   public void setFailureListeners(final List listeners)
   {
      failureListeners.clear();

      failureListeners.addAll(listeners);
   }

   public Object getID()
   {
      return transportConnection.getID();
   }

   public String getRemoteAddress()
   {
      return transportConnection.getRemoteAddress();
   }

   public void addFailureListener(final FailureListener listener)
   {
      if (listener == null)
      {
         throw ActiveMQClientMessageBundle.BUNDLE.failListenerCannotBeNull();
      }
      failureListeners.add(listener);
   }

   public boolean removeFailureListener(final FailureListener listener)
   {
      if (listener == null)
      {
         throw ActiveMQClientMessageBundle.BUNDLE.failListenerCannotBeNull();
      }

      return failureListeners.remove(listener);
   }

   public void addCloseListener(final CloseListener listener)
   {
      if (listener == null)
      {
         throw ActiveMQClientMessageBundle.BUNDLE.closeListenerCannotBeNull();
      }

      closeListeners.add(listener);
   }

   public boolean removeCloseListener(final CloseListener listener)
   {
      if (listener == null)
      {
         throw ActiveMQClientMessageBundle.BUNDLE.closeListenerCannotBeNull();
      }

      return closeListeners.remove(listener);
   }

   public List removeCloseListeners()
   {
      List ret = new ArrayList(closeListeners);

      closeListeners.clear();

      return ret;
   }

   public List removeFailureListeners()
   {
      List ret = getFailureListeners();

      failureListeners.clear();

      return ret;
   }

   public void setCloseListeners(List listeners)
   {
      closeListeners.clear();

      closeListeners.addAll(listeners);
   }

   public ActiveMQBuffer createTransportBuffer(final int size)
   {
      return transportConnection.createTransportBuffer(size);
   }

   public Connection getTransportConnection()
   {
      return transportConnection;
   }

   public long getCreationTime()
   {
      return creationTime;
   }

   public boolean checkDataReceived()
   {
      boolean res = dataReceived;

      dataReceived = false;

      return res;
   }

   /*
    * This can be called concurrently by more than one thread so needs to be locked
    */
   public void fail(final ActiveMQException me)
   {
      fail(me, null);
   }

   public void bufferReceived(final Object connectionID, final ActiveMQBuffer buffer)
   {
      dataReceived = true;
   }

}