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/*
Copyright (c) 2014, SkySQL Ab
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 */
#ifdef USE_PRAGMA_IMPLEMENTATION
#pragma implementation // gcc: Class implementation
#endif
/* For use of 'PRIu64': */
#define __STDC_FORMAT_MACROS
#include <my_config.h>
#include <inttypes.h>
/* This C++ files header file */
#include "./rdb_cf_manager.h"
/* MyRocks header files */
#include "./ha_rocksdb.h"
#include "./ha_rocksdb_proto.h"
#include "./rdb_psi.h"
namespace myrocks {
/* Check if ColumnFamily name says it's a reverse-ordered CF */
bool Rdb_cf_manager::is_cf_name_reverse(const char *const name) {
/* nullptr means the default CF is used.. (TODO: can the default CF be
* reverse?) */
return (name && !strncmp(name, "rev:", 4));
}
void Rdb_cf_manager::init(
std::unique_ptr<Rdb_cf_options> cf_options,
std::vector<rocksdb::ColumnFamilyHandle *> *const handles) {
mysql_mutex_init(rdb_cfm_mutex_key, &m_mutex, MY_MUTEX_INIT_FAST);
DBUG_ASSERT(cf_options != nullptr);
DBUG_ASSERT(handles != nullptr);
DBUG_ASSERT(handles->size() > 0);
m_cf_options = std::move(cf_options);
for (auto cfh : *handles) {
DBUG_ASSERT(cfh != nullptr);
m_cf_name_map[cfh->GetName()] = cfh;
m_cf_id_map[cfh->GetID()] = cfh;
}
}
void Rdb_cf_manager::cleanup() {
for (auto it : m_cf_name_map) {
delete it.second;
}
mysql_mutex_destroy(&m_mutex);
m_cf_options = nullptr;
}
/*
@brief
Find column family by name. If it doesn't exist, create it
@detail
See Rdb_cf_manager::get_cf
*/
rocksdb::ColumnFamilyHandle *
Rdb_cf_manager::get_or_create_cf(rocksdb::DB *const rdb,
const std::string &cf_name_arg) {
DBUG_ASSERT(rdb != nullptr);
rocksdb::ColumnFamilyHandle *cf_handle = nullptr;
if (cf_name_arg == PER_INDEX_CF_NAME) {
// per-index column families is no longer supported.
my_error(ER_PER_INDEX_CF_DEPRECATED, MYF(0));
return nullptr;
}
const std::string &cf_name =
cf_name_arg.empty() ? DEFAULT_CF_NAME : cf_name_arg;
RDB_MUTEX_LOCK_CHECK(m_mutex);
const auto it = m_cf_name_map.find(cf_name);
if (it != m_cf_name_map.end()) {
cf_handle = it->second;
} else {
/* Create a Column Family. */
rocksdb::ColumnFamilyOptions opts;
m_cf_options->get_cf_options(cf_name, &opts);
// NO_LINT_DEBUG
sql_print_information("RocksDB: creating a column family %s",
cf_name.c_str());
sql_print_information(" write_buffer_size=%ld", opts.write_buffer_size);
sql_print_information(" target_file_size_base=%" PRIu64,
opts.target_file_size_base);
const rocksdb::Status s =
rdb->CreateColumnFamily(opts, cf_name, &cf_handle);
if (s.ok()) {
m_cf_name_map[cf_handle->GetName()] = cf_handle;
m_cf_id_map[cf_handle->GetID()] = cf_handle;
} else {
cf_handle = nullptr;
}
}
RDB_MUTEX_UNLOCK_CHECK(m_mutex);
return cf_handle;
}
/*
Find column family by its cf_name.
*/
rocksdb::ColumnFamilyHandle *
Rdb_cf_manager::get_cf(const std::string &cf_name_arg) const {
rocksdb::ColumnFamilyHandle *cf_handle;
RDB_MUTEX_LOCK_CHECK(m_mutex);
std::string cf_name = cf_name_arg.empty() ? DEFAULT_CF_NAME : cf_name_arg;
const auto it = m_cf_name_map.find(cf_name);
cf_handle = (it != m_cf_name_map.end()) ? it->second : nullptr;
if (!cf_handle) {
// NO_LINT_DEBUG
sql_print_warning("Column family '%s' not found.", cf_name.c_str());
}
RDB_MUTEX_UNLOCK_CHECK(m_mutex);
return cf_handle;
}
rocksdb::ColumnFamilyHandle *Rdb_cf_manager::get_cf(const uint32_t &id) const {
rocksdb::ColumnFamilyHandle *cf_handle = nullptr;
RDB_MUTEX_LOCK_CHECK(m_mutex);
const auto it = m_cf_id_map.find(id);
if (it != m_cf_id_map.end())
cf_handle = it->second;
RDB_MUTEX_UNLOCK_CHECK(m_mutex);
return cf_handle;
}
std::vector<std::string> Rdb_cf_manager::get_cf_names(void) const {
std::vector<std::string> names;
RDB_MUTEX_LOCK_CHECK(m_mutex);
for (auto it : m_cf_name_map) {
names.push_back(it.first);
}
RDB_MUTEX_UNLOCK_CHECK(m_mutex);
return names;
}
std::vector<rocksdb::ColumnFamilyHandle *>
Rdb_cf_manager::get_all_cf(void) const {
std::vector<rocksdb::ColumnFamilyHandle *> list;
RDB_MUTEX_LOCK_CHECK(m_mutex);
for (auto it : m_cf_id_map) {
DBUG_ASSERT(it.second != nullptr);
list.push_back(it.second);
}
RDB_MUTEX_UNLOCK_CHECK(m_mutex);
return list;
}
} // namespace myrocks
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