ConfigurationManager.hpp

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/*
 * Copyright 2014 CyberVision, Inc.
 *
 * Licensed 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 CONFIGURATION_MANAGER_HPP_
#define CONFIGURATION_MANAGER_HPP_

#include "kaa/configuration/manager/IConfigurationManager.hpp"

#include <boost/thread/mutex.hpp>
#include <boost/smart_ptr/shared_ptr.hpp>
#include <boost/signals2.hpp>

namespace kaa {

class ConfigurationManager : public IConfigurationManager {
public:
    ConfigurationManager() {}
    ~ConfigurationManager() {}

    void subscribeForConfigurationChanges(IConfigurationReceiver &receiver);
    void unsubscribeFromConfigurationChanges(IConfigurationReceiver &receiver);
    ICommonRecord &getConfiguration();

    void onDeltaRecevied(int index, const avro::GenericDatum & data, bool full_resync);

    void onConfigurationProcessed();

private:
    void updateRecord(boost::shared_ptr<ICommonRecord> rec, const avro::GenericDatum &data);

    bool isSubscribed(uuid_t uuid);

    void subscribe(uuid_t uuid, boost::shared_ptr<ICommonRecord> record);

    void unsubscribe(uuid_t uuid);

    typedef boost::mutex                    mutex_type;
    typedef boost::unique_lock<mutex_type>  lock_type;

    std::map<uuid_t, boost::shared_ptr<ICommonRecord> > records_;
    boost::shared_ptr<ICommonRecord>                    root_;

    mutex_type                                          configurationGuard_;
    boost::signals2::signal<void (ICommonRecord &)>     configurationReceivers_;
};

}  // namespace kaa


#endif /* CONFIGURATION_MANAGER_HPP_ */