org.hornetq.amqp.dealer.util.DeliveryUtil.java Source code

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Here is the source code for org.hornetq.amqp.dealer.util.DeliveryUtil.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.util;

import io.netty.buffer.ByteBuf;
import org.apache.qpid.proton.engine.Receiver;
import org.apache.qpid.proton.message.Message;
import org.apache.qpid.proton.message.impl.MessageImpl;

/**
 * @author Clebert Suconic
 */

public class DeliveryUtil {

    public static int readDelivery(Receiver receiver, ByteBuf buffer) {
        int initial = buffer.writerIndex();
        // optimization by norman
        int count;
        while ((count = receiver.recv(buffer.array(), buffer.arrayOffset() + buffer.writerIndex(),
                buffer.writableBytes())) > 0) {
            // Increment the writer index by the number of bytes written into it while calling recv.
            buffer.writerIndex(buffer.writerIndex() + count);
        }
        return buffer.writerIndex() - initial;
    }

    public static MessageImpl decodeMessageImpl(ByteBuf buffer) {
        MessageImpl message = (MessageImpl) Message.Factory.create();
        message.decode(buffer.array(), buffer.arrayOffset() + buffer.readerIndex(), buffer.readableBytes());
        return message;
    }

}