broker-plugins/amqp-1-0-protocol/src/main/java/org/apache/qpid/server/protocol/v1_0/AnonymousRelayDestination.java

package org.apache.qpid.server.protocol.v1_0;/*
 *
 * 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.
 *
 */

import static org.apache.qpid.server.protocol.v1_0.Session_1_0.DELAYED_DELIVERY;

import java.util.Arrays;

import org.apache.qpid.server.logging.EventLogger;
import org.apache.qpid.server.logging.messages.ExchangeMessages;
import org.apache.qpid.server.message.MessageDestination;
import org.apache.qpid.server.message.ServerMessage;
import org.apache.qpid.server.model.DestinationAddress;
import org.apache.qpid.server.model.NamedAddressSpace;
import org.apache.qpid.server.protocol.v1_0.type.Symbol;
import org.apache.qpid.server.protocol.v1_0.type.messaging.Target;
import org.apache.qpid.server.protocol.v1_0.type.transport.AmqpError;
import org.apache.qpid.server.security.SecurityToken;
import org.apache.qpid.server.txn.ServerTransaction;

public class AnonymousRelayDestination implements ReceivingDestination
{
    private final Target _target;
    private final NamedAddressSpace _addressSpace;
    private final EventLogger _eventLogger;
    private final boolean _discardUnroutable;

    AnonymousRelayDestination(final NamedAddressSpace addressSpace,
                                     final Target target,
                                     final EventLogger eventLogger)
    {
        _addressSpace = addressSpace;
        _target = target;
        _eventLogger = eventLogger;
        _discardUnroutable = target.getCapabilities() != null && Arrays.asList(target.getCapabilities())
                                                                       .contains(DISCARD_UNROUTABLE);
    }

    @Override
    public Symbol[] getCapabilities()
    {
        return new Symbol[]{DELAYED_DELIVERY};
    }

    @Override
    public void send(final ServerMessage<?> message,
                     final ServerTransaction txn,
                     final SecurityToken securityToken) throws UnroutableMessageException
    {
        final ReceivingDestination destination;
        final String routingAddress = message.getTo();
        DestinationAddress destinationAddress = new DestinationAddress(_addressSpace, routingAddress, true);
        MessageDestination messageDestination = destinationAddress.getMessageDestination();
        if (messageDestination != null)
        {
            destination = new NodeReceivingDestination(destinationAddress,
                                                       _target.getDurable(),
                                                       _target.getExpiryPolicy(),
                                                       _target.getCapabilities(),
                                                       _eventLogger);
        }
        else
        {
            destination = null;
        }

        if (destination == null)
        {
            if (_discardUnroutable)
            {
                _eventLogger.message(ExchangeMessages.DISCARDMSG("", routingAddress));
            }
            else
            {
                throw new UnroutableMessageException(AmqpError.NOT_FOUND,
                                                     String.format("Unknown destination '%s'", routingAddress));
            }
        }
        else
        {
            destination.send(message,
                             txn,
                             securityToken);
        }
    }

    @Override
    public int getCredit()
    {
        // TODO - fix
        return 20000;
    }

    @Override
    public String getAddress()
    {
        return "";
    }

    @Override
    public MessageDestination getMessageDestination()
    {
        return null;
    }
}