org.hornetq.amqp.dealer.protonimpl.client.ProtonClientReceiver.java Source code

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Here is the source code for org.hornetq.amqp.dealer.protonimpl.client.ProtonClientReceiver.java

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/*
 * Copyright 2005-2014 Red Hat, Inc.
 * Red Hat 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.hornetq.amqp.dealer.protonimpl.client;

import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.TimeUnit;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.PooledByteBufAllocator;
import org.apache.qpid.proton.amqp.messaging.Accepted;
import org.apache.qpid.proton.engine.Delivery;
import org.apache.qpid.proton.engine.Receiver;
import org.apache.qpid.proton.message.ProtonJMessage;
import org.apache.qpid.proton.message.impl.MessageImpl;
import org.hornetq.amqp.dealer.AMQPClientReceiver;
import org.hornetq.amqp.dealer.exceptions.HornetQAMQPException;
import org.hornetq.amqp.dealer.protonimpl.ProtonAbstractConnectionImpl;
import org.hornetq.amqp.dealer.protonimpl.ProtonAbstractReceiver;
import org.hornetq.amqp.dealer.protonimpl.ProtonSession;
import org.hornetq.amqp.dealer.spi.ProtonSessionSPI;

import static org.hornetq.amqp.dealer.util.DeliveryUtil.readDelivery;
import static org.hornetq.amqp.dealer.util.DeliveryUtil.decodeMessageImpl;

/**
 * @author Clebert Suconic
 */
public class ProtonClientReceiver extends ProtonAbstractReceiver implements AMQPClientReceiver {
    public ProtonClientReceiver(ProtonSessionSPI sessionSPI, ProtonAbstractConnectionImpl connection,
            ProtonSession protonSession, Receiver receiver) {
        super(sessionSPI, connection, protonSession, receiver);
    }

    public void onFlow(int credits) {
    }

    LinkedBlockingDeque<MessageImpl> queues = new LinkedBlockingDeque<>();

    /*
    * called when Proton receives a message to be delivered via a Delivery.
    *
    * This may be called more than once per deliver so we have to cache the buffer until we have received it all.
    *
    * */
    public void onMessage(Delivery delivery) throws HornetQAMQPException {
        ByteBuf buffer = PooledByteBufAllocator.DEFAULT.heapBuffer(1024);
        try {
            synchronized (connection.getTrio().getLock()) {
                readDelivery(receiver, buffer);
                MessageImpl clientMessage = decodeMessageImpl(buffer);

                // This second method could be better
                //            clientMessage.decode(buffer.nioBuffer());

                receiver.advance();
                delivery.disposition(Accepted.getInstance());
                queues.add(clientMessage);

            }
        } finally {
            buffer.release();
        }
    }

    @Override
    public ProtonJMessage receiveMessage(int time, TimeUnit unit) throws Exception {
        return queues.poll(time, unit);
    }
}