BlockHeaderCommitLog.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, or any later version.
 *
 * 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_BLOCKHEADERCOMMITLOG_H
#define HYPERTABLE_BLOCKHEADERCOMMITLOG_H

#include <Hypertable/Lib/BlockHeader.h>

#include <utility>

namespace Hypertable {

  using namespace std::rel_ops;

  class BlockHeaderCommitLog : public BlockHeader {

  public:

    static const uint16_t LatestVersion = 1;

    BlockHeaderCommitLog(uint16_t version=LatestVersion);

    BlockHeaderCommitLog(const char *magic, int64_t revision,
                         uint64_t cluster_id);

    void set_revision(int64_t revision) { m_revision = revision; }

    int64_t get_revision() { return m_revision; }

    void set_cluster_id(uint64_t cluster_id) { m_cluster_id = cluster_id; }

    uint64_t get_cluster_id() { return m_cluster_id; }

    virtual size_t encoded_length();

    virtual void encode(uint8_t **bufp);

    virtual void decode(const uint8_t **bufp, size_t *remainp);

    bool equals(const BlockHeaderCommitLog &other) const;

  private:
    int64_t m_revision;

    uint64_t m_cluster_id;

    uint16_t m_version;
  };

  inline bool operator==(const BlockHeaderCommitLog &lhs,
                         const BlockHeaderCommitLog &rhs) {
    return lhs.equals(rhs);
  }

}

#endif // HYPERTABLE_BLOCKHEADERCOMMITLOG_H