cpp/lib/broker/DirectExchange.cpp

/*
 *
 * 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.
 *
 */
#include <DirectExchange.h>
#include <ExchangeBinding.h>
#include <iostream>

using namespace qpid::broker;
using namespace qpid::framing;
using namespace qpid::sys;

DirectExchange::DirectExchange(const string& _name) : Exchange(_name) {

}

void DirectExchange::bind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* args){
    Mutex::ScopedLock l(lock);
    std::vector<Queue::shared_ptr>& queues(bindings[routingKey]);
    std::vector<Queue::shared_ptr>::iterator i = find(queues.begin(), queues.end(), queue);
    if(i == queues.end()){
        bindings[routingKey].push_back(queue);
        queue->bound(new ExchangeBinding(this, queue, routingKey, args));
    }
}

void DirectExchange::unbind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* /*args*/){
    Mutex::ScopedLock l(lock);
    std::vector<Queue::shared_ptr>& queues(bindings[routingKey]);

    std::vector<Queue::shared_ptr>::iterator i = find(queues.begin(), queues.end(), queue);
    if(i < queues.end()){
        queues.erase(i);
        if(queues.empty()){
            bindings.erase(routingKey);
        }
    }
}

void DirectExchange::route(Deliverable& msg, const string& routingKey, const FieldTable* /*args*/){
    Mutex::ScopedLock l(lock);
    std::vector<Queue::shared_ptr>& queues(bindings[routingKey]);
    int count(0);
    for(std::vector<Queue::shared_ptr>::iterator i = queues.begin(); i != queues.end(); i++, count++){
        msg.deliverTo(*i);
    }
    if(!count){
        std::cout << "WARNING: DirectExchange " << getName() << " could not route message with key " << routingKey << std::endl;
    }
}

DirectExchange::~DirectExchange(){

}


const std::string DirectExchange::typeName("direct");