LocationInitializer.h

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/* -*- c++ -*-
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 3 of the
 * License.
 *
 * Hypertable is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */


#ifndef Hypertable_RangeServer_LocationInitializer_h
#define Hypertable_RangeServer_LocationInitializer_h

#include <Hypertable/RangeServer/Context.h>

#include <Hypertable/Lib/RangeServer/Protocol.h>

#include <Hyperspace/Session.h>

#include <AsyncComm/ConnectionInitializer.h>

#include <Common/String.h>

#include <condition_variable>
#include <mutex>

namespace Hypertable {

  using namespace Lib;


  class LocationInitializer : public ConnectionInitializer {

  public:

    LocationInitializer(std::shared_ptr<Context> &context);

    virtual bool is_removed(const String &path,
                            Hyperspace::SessionPtr &hyperspace);

    CommBuf *create_initialization_request() override;
    bool process_initialization_response(Event *event) override;
    uint64_t initialization_command() override { return Lib::RangeServer::Protocol::COMMAND_INITIALIZE; }

    String get();

    void wait_for_handshake();

    void set_lock_held() { m_lock_held=true; }

  private:

    std::shared_ptr<Context> m_context;

    std::mutex m_mutex;

    std::condition_variable m_cond;

    String m_location;

    String m_location_file;

    bool m_location_persisted {};

    bool m_handshake_complete {};

    bool m_lock_held {};
  };

  typedef std::shared_ptr<LocationInitializer> LocationInitializerPtr;

}


#endif // Hypertable_RangeServer_LocationInitializer_h