pulsar-client-cpp/lib/RoundRobinMessageRouter.h

/**
 * 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.
 */
#ifndef PULSAR_RR_MESSAGE_ROUTER_HEADER_
#define PULSAR_RR_MESSAGE_ROUTER_HEADER_

#include <pulsar/MessageRoutingPolicy.h>
#include <boost/functional/hash.hpp>
#include <boost/thread/mutex.hpp>

namespace pulsar {
    class RoundRobinMessageRouter : public MessageRoutingPolicy {
    public:
        RoundRobinMessageRouter (unsigned int numPartitions);
        virtual ~RoundRobinMessageRouter();
        virtual int getPartition(const Message& msg);
    private:
        boost::mutex mutex_;
        unsigned int prevPartition_;
        unsigned int numPartitions_;
    };
    typedef boost::hash<std::string> StringHash;
    typedef boost::unique_lock<boost::mutex> Lock;
}
#endif // PULSAR_RR_MESSAGE_ROUTER_HEADER_