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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
/* This C++ files header file */
#include "./rdb_cf_manager.h"
/* MyRocks header files */
#include "./ha_rocksdb.h"
#include "./ha_rocksdb_proto.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?) */
if (name && !strncmp(name, "rev:", 4))
return true;
else
return false;
}
#ifdef HAVE_PSI_INTERFACE
static PSI_mutex_key ex_key_cfm;
#endif
void Rdb_cf_manager::init(
Rdb_cf_options* const cf_options,
std::vector<rocksdb::ColumnFamilyHandle*>* const handles)
{
mysql_mutex_init(ex_key_cfm, &m_mutex, MY_MUTEX_INIT_FAST);
DBUG_ASSERT(cf_options != nullptr);
DBUG_ASSERT(handles != nullptr);
DBUG_ASSERT(handles->size() > 0);
m_cf_options = 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);
}
/**
Generate Column Family name for per-index column families
@param res OUT Column Family name
*/
void Rdb_cf_manager::get_per_index_cf_name(const std::string& db_table_name,
const char* const index_name,
std::string* const res)
{
DBUG_ASSERT(index_name != nullptr);
DBUG_ASSERT(res != nullptr);
*res = db_table_name + "." + index_name;
}
/*
@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 char *cf_name,
const std::string& db_table_name,
const char* const index_name,
bool* const is_automatic)
{
DBUG_ASSERT(rdb != nullptr);
DBUG_ASSERT(is_automatic != nullptr);
rocksdb::ColumnFamilyHandle* cf_handle;
mysql_mutex_lock(&m_mutex);
*is_automatic= false;
if (cf_name == nullptr)
cf_name= DEFAULT_CF_NAME;
std::string per_index_name;
if (!strcmp(cf_name, PER_INDEX_CF_NAME))
{
get_per_index_cf_name(db_table_name, index_name, &per_index_name);
cf_name= per_index_name.c_str();
*is_automatic= true;
}
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. */
const std::string cf_name_str(cf_name);
rocksdb::ColumnFamilyOptions opts;
m_cf_options->get_cf_options(cf_name_str, &opts);
sql_print_information("RocksDB: creating column family %s", cf_name_str.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_str, &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;
}
}
mysql_mutex_unlock(&m_mutex);
return cf_handle;
}
/*
Find column family by its cf_name.
@detail
dbname.tablename and index_name are also parameters, because
cf_name=PER_INDEX_CF_NAME means that column family name is a function
of table/index name.
@param out is_automatic TRUE<=> column family name is auto-assigned based on
db_table_name and index_name.
*/
rocksdb::ColumnFamilyHandle*
Rdb_cf_manager::get_cf(const char *cf_name,
const std::string& db_table_name,
const char* const index_name,
bool* const is_automatic) const
{
DBUG_ASSERT(is_automatic != nullptr);
rocksdb::ColumnFamilyHandle* cf_handle;
*is_automatic= false;
mysql_mutex_lock(&m_mutex);
if (cf_name == nullptr)
cf_name= DEFAULT_CF_NAME;
std::string per_index_name;
if (!strcmp(cf_name, PER_INDEX_CF_NAME))
{
get_per_index_cf_name(db_table_name, index_name, &per_index_name);
cf_name= per_index_name.c_str();
*is_automatic= true;
}
const auto it = m_cf_name_map.find(cf_name);
cf_handle = (it != m_cf_name_map.end()) ? it->second : nullptr;
mysql_mutex_unlock(&m_mutex);
return cf_handle;
}
rocksdb::ColumnFamilyHandle* Rdb_cf_manager::get_cf(const uint32_t &id) const
{
rocksdb::ColumnFamilyHandle* cf_handle = nullptr;
mysql_mutex_lock(&m_mutex);
const auto it = m_cf_id_map.find(id);
if (it != m_cf_id_map.end())
cf_handle = it->second;
mysql_mutex_unlock(&m_mutex);
return cf_handle;
}
std::vector<std::string>
Rdb_cf_manager::get_cf_names(void) const
{
std::vector<std::string> names;
mysql_mutex_lock(&m_mutex);
for (auto it : m_cf_name_map) {
names.push_back(it.first);
}
mysql_mutex_unlock(&m_mutex);
return names;
}
std::vector<rocksdb::ColumnFamilyHandle*>
Rdb_cf_manager::get_all_cf(void) const
{
std::vector<rocksdb::ColumnFamilyHandle*> list;
mysql_mutex_lock(&m_mutex);
for (auto it : m_cf_id_map) {
list.push_back(it.second);
}
mysql_mutex_unlock(&m_mutex);
return list;
}
} // namespace myrocks
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