c501d4d4e1
query_classifier.cc: Now query can be parsed outside query_classifier_get_type by calling function parse_query. It creates parsing_info_t struct which is then added to the GWBUF which also includes the query. Parsing information follows the buffered query and it is freed at the same time with query buffer, in gwbuf_free. buffer.c: additions of parsing information to gwbuf struct. modutil.c: added function which returns query from GWBUF in plain text string. readwritesplit.c:routeQuery now only calls query_classifier_get_type to get the query type instead of extracting plain text query from the GWBUF buffer.
69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/*
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This file is distributed as part of the SkySQL Gateway. It is free
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software: you can redistribute it and/or modify it under the terms of the
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GNU General Public License as published by the Free Software Foundation,
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version 2.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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Copyright SkySQL Ab
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*/
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/** getpid */
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#include <unistd.h>
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#include <mysql.h>
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#include <skygw_utils.h>
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#include <buffer.h>
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EXTERN_C_BLOCK_BEGIN
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/**
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* Query type for skygateway.
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* The meaninful difference is where operation is done and whether master data
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* is modified
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*/
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typedef enum {
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QUERY_TYPE_UNKNOWN = 0x0000, /*< Initial value, can't be tested bitwisely */
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QUERY_TYPE_LOCAL_READ = 0x0001, /*< Read non-database data, execute in MaxScale */
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QUERY_TYPE_READ = 0x0002, /*< No updates */
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QUERY_TYPE_WRITE = 0x0004, /*< Master data will be modified */
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QUERY_TYPE_SESSION_WRITE = 0x0008, /*< Session data will be modified */
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QUERY_TYPE_GLOBAL_WRITE = 0x0010, /*< Global system variable modification */
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QUERY_TYPE_BEGIN_TRX = 0x0020, /*< BEGIN or START TRANSACTION */
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QUERY_TYPE_ENABLE_AUTOCOMMIT = 0x0040, /*< SET autocommit=1 */
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QUERY_TYPE_DISABLE_AUTOCOMMIT = 0x0080, /*< SET autocommit=0 */
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QUERY_TYPE_ROLLBACK = 0x0100, /*< ROLLBACK */
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QUERY_TYPE_COMMIT = 0x0200, /*< COMMIT */
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QUERY_TYPE_PREPARE_NAMED_STMT = 0x0400, /*< Prepared stmt with name from user */
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QUERY_TYPE_PREPARE_STMT = 0x0800, /*< Prepared stmt with id provided by server */
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QUERY_TYPE_EXEC_STMT = 0x1000 /*< Execute prepared statement */
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} skygw_query_type_t;
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#define QUERY_IS_TYPE(mask,type) ((mask & type) == type)
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/**
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* Create THD and use it for creating parse tree. Examine parse tree and
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* classify the query.
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*/
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skygw_query_type_t query_classifier_get_type(GWBUF* querybuf);
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/** Free THD context and close MYSQL */
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char* skygw_query_classifier_get_stmtname(MYSQL* mysql);
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char* skygw_get_canonical(GWBUF* querybuf);
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bool parse_query (GWBUF* querybuf);
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parsing_info_t* parsing_info_init(void (*donefun)(void *));
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void parsing_info_done(void* ptr);
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EXTERN_C_BLOCK_END
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