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/*
Copyright (c) 2016, Facebook, Inc.
This program 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 2 of the License.
This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#pragma once
/* C++ standard header files */
#include <condition_variable>
#include <mutex>
#include <queue>
#include <string>
#include <thread>
#include <vector>
/* RocksDB header files */
#include "rocksdb/db.h"
#include "rocksdb/sst_file_writer.h"
// define RDB_SST_INFO_USE_THREAD /* uncomment to use threads */
namespace myrocks {
class Rdb_sst_file {
private:
Rdb_sst_file(const Rdb_sst_file &p) = delete;
Rdb_sst_file &operator=(const Rdb_sst_file &p) = delete;
rocksdb::DB *const m_db;
rocksdb::ColumnFamilyHandle *const m_cf;
const rocksdb::DBOptions &m_db_options;
rocksdb::SstFileWriter *m_sst_file_writer;
const std::string m_name;
const bool m_tracing;
std::string generateKey(const std::string &key);
public:
Rdb_sst_file(rocksdb::DB *const db, rocksdb::ColumnFamilyHandle *const cf,
const rocksdb::DBOptions &db_options, const std::string &name,
const bool tracing);
~Rdb_sst_file();
rocksdb::Status open();
rocksdb::Status put(const rocksdb::Slice &key, const rocksdb::Slice &value);
rocksdb::Status commit();
};
class Rdb_sst_info {
private:
Rdb_sst_info(const Rdb_sst_info &p) = delete;
Rdb_sst_info &operator=(const Rdb_sst_info &p) = delete;
rocksdb::DB *const m_db;
rocksdb::ColumnFamilyHandle *const m_cf;
const rocksdb::DBOptions &m_db_options;
uint64_t m_curr_size;
uint64_t m_max_size;
uint32_t m_sst_count;
std::string m_error_msg;
std::string m_prefix;
static std::string m_suffix;
#if defined(RDB_SST_INFO_USE_THREAD)
std::queue<Rdb_sst_file *> m_queue;
std::mutex m_mutex;
std::condition_variable m_cond;
std::thread *m_thread;
bool m_finished;
#endif
Rdb_sst_file *m_sst_file;
const bool m_tracing;
int open_new_sst_file();
void close_curr_sst_file();
void set_error_msg(const std::string &msg);
#if defined(RDB_SST_INFO_USE_THREAD)
void run_thread();
static void thread_fcn(void *object);
#endif
public:
Rdb_sst_info(rocksdb::DB *const db, const std::string &tablename,
const std::string &indexname,
rocksdb::ColumnFamilyHandle *const cf,
const rocksdb::DBOptions &db_options, const bool &tracing);
~Rdb_sst_info();
int put(const rocksdb::Slice &key, const rocksdb::Slice &value);
int commit();
const std::string &error_message() const { return m_error_msg; }
static void init(const rocksdb::DB *const db);
};
} // namespace myrocks
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