src/log/leveldb.hpp

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
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//
//     http://www.apache.org/licenses/LICENSE-2.0
//
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#ifndef __LOG_LEVELDB_HPP__
#define __LOG_LEVELDB_HPP__

#include <leveldb/db.h>

#include <stdint.h>

#include <stout/option.hpp>

#include "log/storage.hpp"

namespace mesos {
namespace internal {
namespace log {

// Concrete implementation of the storage interface using leveldb.
class LevelDBStorage : public Storage
{
public:
  LevelDBStorage();
  ~LevelDBStorage() override;

  Try<State> restore(const std::string& path) override;
  Try<Nothing> persist(const Metadata& metadata) override;
  Try<Nothing> persist(const Action& action) override;
  Try<Action> read(uint64_t position) override;

private:
  leveldb::DB* db;

  // First position still in leveldb, used during truncation.
  Option<uint64_t> first;
};

} // namespace log {
} // namespace internal {
} // namespace mesos {

#endif // __LOG_LEVELDB_HPP__