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183 lines (143 loc) · 3.66 KB
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/**
* @section LICENCE
*
* This file is distributed as part of the MariaDB Corporation MaxScale. It 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.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*
* Copyright MariaDB Corporation Ab
*
* @file
*
*/
#include <query_classifier.h>
#include <log_manager.h>
#include <modules.h>
//#define QC_TRACE_ENABLED
#undef QC_TRACE_ENABLED
#if defined(QC_TRACE_ENABLED)
#define QC_TRACE() MXS_NOTICE(__func__)
#else
#define QC_TRACE()
#endif
static const char default_qc_name[] = "qc_mysqlembedded";
static QUERY_CLASSIFIER* classifier;
bool qc_init(const char* plugin_name)
{
QC_TRACE();
ss_dassert(!classifier);
if (!plugin_name || (*plugin_name == 0))
{
MXS_NOTICE("No query classifier specified, using default '%s'.", default_qc_name);
plugin_name = default_qc_name;
}
bool success = false;
void* module = load_module(plugin_name, MODULE_QUERY_CLASSIFIER);
if (module)
{
classifier = (QUERY_CLASSIFIER*) module;
MXS_NOTICE("%s loaded.", plugin_name);
success = classifier->qc_init();
}
else
{
MXS_ERROR("Could not load %s.", plugin_name);
}
return success;
}
void qc_end(void)
{
QC_TRACE();
ss_dassert(classifier);
classifier->qc_end();
classifier = NULL;
}
bool qc_thread_init(void)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_thread_init();
}
void qc_thread_end(void)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_thread_end();
}
qc_query_type_t qc_get_type(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_type(query);
}
qc_query_op_t qc_get_operation(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_operation(query);
}
char* qc_get_created_table_name(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_created_table_name(query);
}
bool qc_is_drop_table_query(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_is_drop_table_query(query);
}
bool qc_is_real_query(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_is_real_query(query);
}
char** qc_get_table_names(GWBUF* query, int* tblsize, bool fullnames)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_table_names(query, tblsize, fullnames);
}
char* qc_get_canonical(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_canonical(query);
}
bool qc_query_has_clause(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_query_has_clause(query);
}
char* qc_get_qtype_str(qc_query_type_t qtype)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_qtype_str(qtype);
}
char* qc_get_affected_fields(GWBUF* query)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_affected_fields(query);
}
char** qc_get_database_names(GWBUF* query, int* sizep)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_get_database_names(query, sizep);
}