proxysql

Commit Graph

Author	SHA1	Message	Date
René Cannaò	ffd39707db	Support for SERVER_MORE_RESULTS_EXISTS #547	10 years ago
René Cannaò	b6a6b43daa	Reducing the size of MySQL_Session	10 years ago
René Cannaò	0e01e5e322	Mirroring bug fixes Handling of error_msg Fixed crashed on SHOW PROCESSLIST	10 years ago
René Cannaò	bc8c5e175a	Added column mirror_flagOUT in mysql_query_rules Mirroring starts when either mirror_hostgroup or mirror_flagOUT is set	10 years ago
René Cannaò	2e276f06f4	Second commit to implement mirroring Expanded table `mysql_query_rules` to add `mirror_hostgroup` Expanded struct `_Query_Processor_rule_t` and class `Query_Processor_Output` to support `mirror_hostgroup` Added new variable `mirror_hostgroup` in `MySQL_Session` The following logic ensure that a mirror_hostgroup set when processing the query in the original session is preserved when reprocessing the query in the mirror session: * when a new mirror session is created `mirror_hostgroup` is set according to the result of Query_Processor * when a mirror session is executed , `mirror_hostgroup` is copied into `default_hostgroup` Current limitations: * queries larger than 15MB aren't mirrorred * upgrade from 1.1 is still not possible it will wipe table mysql_query_rules	10 years ago
René Cannaò	c101fad268	First draft on mirroring feature Add new variable MySQL_Session::mirror (false by default) Add new struct MySQL_Session::mirrorPkt (false by default) These functions return immediately if this is a mirror session: * MySQL_Protocol::generate_pkt_EOF() * MySQL_Protocol::generate_pkt_ERR() * MySQL_Protocol::generate_pkt_OK() * MySQL_Protocol::generate_pkt_column_count() * MySQL_Protocol::generate_pkt_field() * MySQL_Protocol::generate_pkt_row3() MySQL_ResultSet::MySQL_ResultSet() exits almost immediately if this is a mirror session Most of the code of these functions is not executed if this is a mirror session: * MySQL_ResultSet::add_eof() * MySQL_ResultSet::get_resultset() In MySQL_Session::writeout() : * `client_myds->write_to_net_poll()` is called only if this is not a mirror session In MySQL_Session::handler(): * if query is a `SELECT` (hardcoded for now) : create a new session and mark it as `mirror=true` duplicate the query and send it to the new session * if `mirror==true` : pretend to read a new query from c`lient_myds` proceed normally (with the only exception that no data can be sent to a client) In MySQL_Thread::process_all_sessions() : * if `mirror==true` and `status==WAITING_CLIENT_DATA` it means the session is "completed" so it get destroyed Limitations: * it currently doesn't support large packets * doesn't support different charset * doesn't support transactions	10 years ago
René Cannaò	88db7d8542	Implementation of enforce_autocommit_on_reads See issue #485	10 years ago
René Cannaò	cfd0cf32e8	QueryParserArgs is moved into Query_Info This is a further attempt to reduce calls to malloc() QueryParserArgs is no longer a pointer, but a struct inside Query_info	10 years ago
René Cannaò	b5792ad2cb	Disabling the smart handling of transactions #469 Moved some code from MySQL_Session:handler_special_queries() into two new functions: - MySQL_Session::handler_CommitRollback() - MySQL_Session::handler_SetAutocommit() These two new functions are called nowhere: de facto they are disabled	10 years ago
René Cannaò	dd3b7e5a82	Removed any reference to MySQL_Session::pause the variable wasn't in used from long time	10 years ago
René Cannaò	95d2671a4e	Removed a lot of deprecated code	10 years ago
René Cannaò	c3e6fda7a4	Track and handle autocommit (#438 ) - MySQL_Session::handler_special_queries() processes set autocommit from clients - to the client is always returned the autocommit value set in the session - set autocommit is either just acknowledged to the client, or forwarded to the backend based on the status of transactions - unless there are query rules to handle SET AUTOCOMMIT , the statement is forwarded to the first found active transaction: this assumes there is just one transactions. Although multiple transactions are possible, handling multiple transactions at the same time seems a dangerous adventure	10 years ago
René Cannaò	6b05a69e1b	Improving query statistics/information Added MySQL_Session::RequestEnd() to wrap CurrentQuery.end() and other state changes : this to minimize bugs MySQL_Session::RequestEnd() sets query end time instead of Query_Info::end() MySQL_Session::RequestEnd() is called also in case of special queries handled by handler_special_queries()	10 years ago
René Cannaò	ea15fd4681	Less aggressive multiplexing , #394	11 years ago
René Cannaò	42539a2379	Fix issues #177 related to LAST_INSERT_ID() Assumes that LAST_INSERT_ID() is always used in simple query like 'SELECT LAST_INSERT_ID()'	11 years ago
René Cannaò	ec1df01a38	More improvement on mysql_use_result() , #342 Deprecated old MySQL_Session::MySQL_Result_to_MySQL_wire() Handled query cache in new MySQL_Result_to_MySQL_wire()	11 years ago
René Cannaò	56046271d9	Further improvements on MySQL_ResultSet() for #342	11 years ago
René Cannaò	a01f162a6a	Starting using mysql_use_result() per issue #342 Created class MySQL_ResultSet Still a draft	11 years ago
René Cannaò	5a47c41c7e	Removed DBG commands, issue #353 Closes #353	11 years ago
René Cannaò	e6bc5cc8b8	Converted QP_out_t into a class Query_Processor_Output	11 years ago
René Cannaò	908e043eb9	Code cleanup : commented and not deleted for now. Removed: - handler___status_WAITING_SERVER_DATA___STATE_QUERY_SENT() - handler___status_WAITING_SERVER_DATA___STATE_ROW() - handler___status_WAITING_SERVER_DATA___STATE_EOF1()	11 years ago
René Cannaò	0eac78991e	iImplementation of mysql-wait_timeout (issue #321 ) and others Also implemented mysql-max_transaction_time : like mysql-wait_timeout , but for transactions	11 years ago
René Cannaò	ad412fbf7d	Simplified QueryInfo to prepare enhncement on #329	11 years ago
René Cannaò	125856ddf6	Implementing mysql_query_digest for real time query statistics	11 years ago
René Cannaò	9051e000ee	SET NAMES are handled by ProxySQL SET NAMES sent from the application only change the charset in the client connection. When a backend connection is taken from the connection pool and charset mismatches, SET NAMES is sent to the backend	11 years ago
René Cannaò	66e8b0d87a	Implemented transaction persistency with transaction_persistent and transaction_persistent_hostgroup	11 years ago
René Cannaò	42b0e6f54a	Implemented KILL CONNECTION Also replaced some proxy_error() with proxy_warning()	11 years ago
René Cannaò	7f27c500a7	Drafting table stats.stats_mysql_processlist	11 years ago
René Cannaò	dca5b434fc	Many bug fixes: Simplified the ping within MySQL_Thread SQLite3_row::add_fields() to handle empty string prot_status was not initialized in MySQL_Protocol Session's default schema was always mysql_thread___default_schema , now fixed with correct value default_schema is now read from config file	11 years ago
René Cannaò	76edfb126f	Further implementation of libmariadb client	11 years ago
René Cannaò	6c44e9d96f	Further attempt to use MariaDB Client Library	11 years ago
René Cannaò	271afbb02c	Handling mysql_select_db() and mysql_set_character_set() for backends using non blocking API	11 years ago
René Cannaò	10b5f6da6d	Backend are now pinged using MariaDB Client Library	11 years ago
René Cannaò	ff5c62830c	Connects to backends is performed via MariaDB Client Library	11 years ago
René Cannaò	59507675e5	MySQL_Thread, MySQL_Threads_Handler and MySQL_Authentication are no longer modules	11 years ago

35 Commits (32163bf892d33a5ee032adc8bb2a69bb7b331e30)