org.proton.plug.context.client.ProtonClientReceiverContext.java Source code

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Here is the source code for org.proton.plug.context.client.ProtonClientReceiverContext.java

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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.proton.plug.context.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.proton.plug.AMQPClientReceiverContext;
import org.proton.plug.AMQPSessionCallback;
import org.proton.plug.context.AbstractConnectionContext;
import org.proton.plug.context.AbstractProtonReceiverContext;
import org.proton.plug.context.AbstractProtonSessionContext;
import org.proton.plug.exceptions.ActiveMQAMQPException;

import static org.proton.plug.util.DeliveryUtil.readDelivery;
import static org.proton.plug.util.DeliveryUtil.decodeMessageImpl;

public class ProtonClientReceiverContext extends AbstractProtonReceiverContext
        implements AMQPClientReceiverContext {
    public ProtonClientReceiverContext(AMQPSessionCallback sessionSPI, AbstractConnectionContext connection,
            AbstractProtonSessionContext 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 ActiveMQAMQPException {
        ByteBuf buffer = PooledByteBufAllocator.DEFAULT.heapBuffer(1024);
        try {
            synchronized (connection.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);
    }
}