org.apache.activemq.artemis.core.protocol.core.impl.wireformat.SessionSendMessage 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.core.protocol.core.impl.wireformat;

import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.client.SendAcknowledgementHandler;
import org.apache.activemq.artemis.core.message.impl.MessageInternal;
import org.apache.activemq.artemis.spi.core.protocol.RemotingConnection;
import org.apache.activemq.artemis.utils.DataConstants;

public class SessionSendMessage extends MessagePacket
{

   private boolean requiresResponse;

   /**
    * In case, we are using a different handler than the one set on the {@link org.apache.activemq.artemis.api.core.client.ClientSession}
    * 
    * This field is only used at the client side.
    *
    * @see org.apache.activemq.artemis.api.core.client.ClientSession#setSendAcknowledgementHandler(SendAcknowledgementHandler)
    * @see org.apache.activemq.artemis.api.core.client.ClientProducer#send(org.apache.activemq.artemis.api.core.SimpleString, org.apache.activemq.artemis.api.core.Message, SendAcknowledgementHandler)
    */
   private final transient SendAcknowledgementHandler handler;

   public SessionSendMessage(final MessageInternal message, final boolean requiresResponse,
                             final SendAcknowledgementHandler handler)
   {
      super(SESS_SEND, message);
      this.handler = handler;
      this.requiresResponse = requiresResponse;
   }

   public SessionSendMessage(final MessageInternal message)
   {
      super(SESS_SEND, message);
      this.handler = null;
   }

   // Public --------------------------------------------------------

   public boolean isRequiresResponse()
   {
      return requiresResponse;
   }

   public SendAcknowledgementHandler getHandler()
   {
      return handler;
   }

   @Override
   public ActiveMQBuffer encode(final RemotingConnection connection)
   {
      ActiveMQBuffer buffer = message.getEncodedBuffer();

      // Sanity check
      if (buffer.writerIndex() != message.getEndOfMessagePosition())
      {
         throw new IllegalStateException("Wrong encode position");
      }

      buffer.writeBoolean(requiresResponse);

      size = buffer.writerIndex();

      // Write standard headers

      int len = size - DataConstants.SIZE_INT;
      buffer.setInt(0, len);
      buffer.setByte(DataConstants.SIZE_INT, getType());
      buffer.setLong(DataConstants.SIZE_INT + DataConstants.SIZE_BYTE, channelID);

      // Position reader for reading by Netty
      buffer.readerIndex(0);

      message.resetCopied();

      return buffer;
   }

   @Override
   public void decodeRest(final ActiveMQBuffer buffer)
   {
      // Buffer comes in after having read standard headers and positioned at Beginning of body part

      message.decodeFromBuffer(buffer);

      int ri = buffer.readerIndex();

      requiresResponse = buffer.readBoolean();

      buffer.readerIndex(ri);

   }

   @Override
   public int hashCode()
   {
      final int prime = 31;
      int result = super.hashCode();
      result = prime * result + (requiresResponse ? 1231 : 1237);
      return result;
   }

   @Override
   public boolean equals(Object obj)
   {
      if (this == obj)
         return true;
      if (!super.equals(obj))
         return false;
      if (!(obj instanceof SessionSendMessage))
         return false;
      SessionSendMessage other = (SessionSendMessage) obj;
      if (requiresResponse != other.requiresResponse)
         return false;
      return true;
   }

}