TableInfoMap.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_RangeServer_TableInfoMap_h
#define Hypertable_RangeServer_TableInfoMap_h

#include <Hypertable/RangeServer/HyperspaceTableCache.h>
#include <Hypertable/RangeServer/TableInfo.h>

#include <Common/StringExt.h>

#include <map>
#include <memory>
#include <mutex>
#include <string>

namespace Hypertable {


  class TableInfoMap {
  public:

    TableInfoMap() { }

    TableInfoMap(HyperspaceTableCachePtr schema_cache) : m_schema_cache(schema_cache) { }

    virtual ~TableInfoMap();

    bool lookup(const String &table_id, TableInfoPtr &info);

    void get(const String &table_id, TableInfoPtr &info);

    void promote_staged_range(const TableIdentifier &table, RangePtr &range, const char *transfer_log);

    bool remove(const String &table_id, TableInfoPtr &info);

    void get_all(std::vector<TableInfoPtr> &tv);

    void get_ranges(Ranges &ranges, StringSet *remove_ok_logs=0);

    void clear();

    bool empty();

    void merge(TableInfoMap *other);

    void merge(TableInfoMap *other, vector<MetaLog::EntityPtr> &entities,
               StringSet &transfer_logs);

  private:

    void merge_unlocked(TableInfoMap *other);

    typedef std::map<String, TableInfoPtr> InfoMap;

    std::mutex m_mutex;
    
    HyperspaceTableCachePtr m_schema_cache;

    InfoMap m_map;
  };

  typedef std::shared_ptr<TableInfoMap> TableInfoMapPtr;

}

#endif // Hypertable_RangeServer_TableInfoMap_h