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wsrep_mysqld.h
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/* Copyright 2008-2015 Codership Oy <http://www.codership.com> 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA */ #include <wsrep.h> #ifndef WSREP_MYSQLD_H #define WSREP_MYSQLD_H #include <mysql/plugin.h> #include <mysql/service_wsrep.h> #ifdef WITH_WSREP typedef struct st_mysql_show_var SHOW_VAR; #include <sql_priv.h> //#include "rpl_gtid.h" #include "../wsrep/wsrep_api.h" #include "mdl.h" #include "mysqld.h" #include "sql_table.h" #define WSREP_UNDEFINED_TRX_ID ULONGLONG_MAX class set_var; class THD; enum wsrep_consistency_check_mode { NO_CONSISTENCY_CHECK, CONSISTENCY_CHECK_DECLARED, CONSISTENCY_CHECK_RUNNING, }; struct wsrep_thd_shadow { ulonglong options; uint server_status; enum wsrep_exec_mode wsrep_exec_mode; Vio *vio; ulong tx_isolation; char *db; size_t db_length; my_hrtime_t user_time; longlong row_count_func; }; // Global wsrep parameters extern wsrep_t* wsrep; // MySQL wsrep options extern const char* wsrep_provider; extern const char* wsrep_provider_options; extern const char* wsrep_cluster_name; extern const char* wsrep_cluster_address; extern const char* wsrep_node_name; extern const char* wsrep_node_address; extern const char* wsrep_node_incoming_address; extern const char* wsrep_data_home_dir; extern const char* wsrep_dbug_option; extern long wsrep_slave_threads; extern int wsrep_slave_count_change; extern my_bool wsrep_convert_LOCK_to_trx; extern ulong wsrep_retry_autocommit; extern my_bool wsrep_auto_increment_control; extern my_bool wsrep_incremental_data_collection; extern const char* wsrep_start_position; extern ulong wsrep_max_ws_size; extern ulong wsrep_max_ws_rows; extern const char* wsrep_notify_cmd; extern long wsrep_max_protocol_version; extern ulong wsrep_forced_binlog_format; extern my_bool wsrep_desync; extern my_bool wsrep_replicate_myisam; extern ulong wsrep_mysql_replication_bundle; extern my_bool wsrep_restart_slave; extern my_bool wsrep_restart_slave_activated; extern my_bool wsrep_slave_FK_checks; extern my_bool wsrep_slave_UK_checks; extern ulong wsrep_running_threads; extern bool wsrep_new_cluster; extern bool wsrep_gtid_mode; extern uint32 wsrep_gtid_domain_id; extern bool wsrep_dirty_reads; enum enum_wsrep_OSU_method { WSREP_OSU_TOI, WSREP_OSU_RSU, WSREP_OSU_NONE, }; enum enum_wsrep_sync_wait { WSREP_SYNC_WAIT_NONE = 0x0, // show, select, begin WSREP_SYNC_WAIT_BEFORE_READ = 0x1, WSREP_SYNC_WAIT_BEFORE_UPDATE_DELETE = 0x2, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE = 0x4, WSREP_SYNC_WAIT_MAX = 0x7 }; // MySQL status variables extern my_bool wsrep_connected; extern my_bool wsrep_ready; extern const char* wsrep_cluster_state_uuid; extern long long wsrep_cluster_conf_id; extern const char* wsrep_cluster_status; extern long wsrep_cluster_size; extern long wsrep_local_index; extern long long wsrep_local_bf_aborts; extern const char* wsrep_provider_name; extern const char* wsrep_provider_version; extern const char* wsrep_provider_vendor; int wsrep_show_status(THD *thd, SHOW_VAR *var, char *buff, enum enum_var_type scope); int wsrep_init(); void wsrep_deinit(bool free_options); /* Initialize wsrep thread LOCKs and CONDs */ void wsrep_thr_init(); /* Destroy wsrep thread LOCKs and CONDs */ void wsrep_thr_deinit(); void wsrep_recover(); bool wsrep_before_SE(); // initialize wsrep before storage // engines (true) or after (false) /* wsrep initialization sequence at startup * @param before wsrep_before_SE() value */ void wsrep_init_startup(bool before); // Other wsrep global variables extern my_bool wsrep_inited; // whether wsrep is initialized ? extern "C" void wsrep_thd_set_exec_mode(THD *thd, enum wsrep_exec_mode mode); extern "C" void wsrep_thd_set_query_state( THD *thd, enum wsrep_query_state state); extern "C" void wsrep_thd_set_trx_to_replay(THD *thd, uint64 trx_id); extern "C" uint32 wsrep_thd_wsrep_rand(THD *thd); extern "C" time_t wsrep_thd_query_start(THD *thd); extern "C" query_id_t wsrep_thd_query_id(THD *thd); extern "C" query_id_t wsrep_thd_wsrep_last_query_id(THD *thd); extern "C" void wsrep_thd_set_wsrep_last_query_id(THD *thd, query_id_t id); extern void wsrep_close_client_connections(my_bool wait_to_end); extern int wsrep_wait_committing_connections_close(int wait_time); extern void wsrep_close_applier(THD *thd); extern void wsrep_wait_appliers_close(THD *thd); extern void wsrep_close_applier_threads(int count); extern void wsrep_kill_mysql(THD *thd); /* new defines */ extern void wsrep_stop_replication(THD *thd); extern bool wsrep_start_replication(); extern bool wsrep_must_sync_wait(THD* thd, uint mask = WSREP_SYNC_WAIT_BEFORE_READ); extern bool wsrep_sync_wait(THD* thd, uint mask = WSREP_SYNC_WAIT_BEFORE_READ); extern int wsrep_check_opts(); extern void wsrep_prepend_PATH (const char* path); /* Other global variables */ extern wsrep_seqno_t wsrep_locked_seqno; #define WSREP_ON \ (global_system_variables.wsrep_on) #define WSREP_ON_NEW \ ((global_system_variables.wsrep_on) && \ wsrep_provider && \ strcmp(wsrep_provider, WSREP_NONE)) #define WSREP(thd) \ (WSREP_ON && thd->variables.wsrep_on) #define WSREP_CLIENT(thd) \ (WSREP(thd) && thd->wsrep_client_thread) #define WSREP_EMULATE_BINLOG(thd) \ (WSREP(thd) && wsrep_emulate_bin_log) #define WSREP_FORMAT(my_format) \ ((wsrep_forced_binlog_format != BINLOG_FORMAT_UNSPEC) \ ? wsrep_forced_binlog_format : (ulong)(my_format)) // prefix all messages with "WSREP" #define WSREP_LOG(fun, ...) \ do { \ char msg[1024] = {'\0'}; \ snprintf(msg, sizeof(msg) - 1, ## __VA_ARGS__); \ fun("WSREP: %s", msg); \ } while(0) #define WSREP_LOG_CONFLICT_THD(thd, role) \ WSREP_LOG(sql_print_information, \ "%s: \n " \ " THD: %lu, mode: %s, state: %s, conflict: %s, seqno: %lld\n " \ " SQL: %s", \ role, thd_get_thread_id(thd), wsrep_thd_exec_mode_str(thd), \ wsrep_thd_query_state_str(thd), \ wsrep_thd_conflict_state_str(thd), (long long)wsrep_thd_trx_seqno(thd), \ wsrep_thd_query(thd) \ ); #define WSREP_LOG_CONFLICT(bf_thd, victim_thd, bf_abort) \ if (wsrep_debug || wsrep_log_conflicts) \ { \ WSREP_LOG(sql_print_information, "cluster conflict due to %s for threads:",\ (bf_abort) ? "high priority abort" : "certification failure" \ ); \ if (bf_thd != NULL) WSREP_LOG_CONFLICT_THD(bf_thd, "Winning thread"); \ if (victim_thd) WSREP_LOG_CONFLICT_THD(victim_thd, "Victim thread"); \ } #define WSREP_PROVIDER_EXISTS \ (wsrep_provider && strncasecmp(wsrep_provider, WSREP_NONE, FN_REFLEN)) extern void wsrep_ready_wait(); class Ha_trx_info; struct THD_TRANS; void wsrep_register_hton(THD* thd, bool all); void wsrep_brute_force_killer(THD *thd); int wsrep_hire_brute_force_killer(THD *thd, uint64_t trx_id); /* this is visible for client build so that innodb plugin gets this */ typedef struct wsrep_aborting_thd { struct wsrep_aborting_thd *next; THD *aborting_thd; } *wsrep_aborting_thd_t; extern mysql_mutex_t LOCK_wsrep_ready; extern mysql_cond_t COND_wsrep_ready; extern mysql_mutex_t LOCK_wsrep_sst; extern mysql_cond_t COND_wsrep_sst; extern mysql_mutex_t LOCK_wsrep_sst_init; extern mysql_cond_t COND_wsrep_sst_init; extern mysql_mutex_t LOCK_wsrep_rollback; extern mysql_cond_t COND_wsrep_rollback; extern int wsrep_replaying; extern mysql_mutex_t LOCK_wsrep_replaying; extern mysql_cond_t COND_wsrep_replaying; extern mysql_mutex_t LOCK_wsrep_slave_threads; extern mysql_mutex_t LOCK_wsrep_desync; extern mysql_mutex_t LOCK_wsrep_config_state; extern wsrep_aborting_thd_t wsrep_aborting_thd; extern my_bool wsrep_emulate_bin_log; extern int wsrep_to_isolation; #ifdef GTID_SUPPORT extern rpl_sidno wsrep_sidno; #endif /* GTID_SUPPORT */ extern my_bool wsrep_preordered_opt; extern handlerton *wsrep_hton; #ifdef HAVE_PSI_INTERFACE extern PSI_mutex_key key_LOCK_wsrep_thd; extern PSI_cond_key key_COND_wsrep_thd; extern PSI_mutex_key key_LOCK_wsrep_ready; extern PSI_mutex_key key_COND_wsrep_ready; extern PSI_mutex_key key_LOCK_wsrep_sst; extern PSI_cond_key key_COND_wsrep_sst; extern PSI_mutex_key key_LOCK_wsrep_sst_init; extern PSI_cond_key key_COND_wsrep_sst_init; extern PSI_mutex_key key_LOCK_wsrep_sst_thread; extern PSI_cond_key key_COND_wsrep_sst_thread; extern PSI_mutex_key key_LOCK_wsrep_rollback; extern PSI_cond_key key_COND_wsrep_rollback; extern PSI_mutex_key key_LOCK_wsrep_replaying; extern PSI_cond_key key_COND_wsrep_replaying; extern PSI_mutex_key key_LOCK_wsrep_slave_threads; extern PSI_mutex_key key_LOCK_wsrep_desync; extern PSI_file_key key_file_wsrep_gra_log; #endif /* HAVE_PSI_INTERFACE */ struct TABLE_LIST; int wsrep_to_isolation_begin(THD *thd, char *db_, char *table_, const TABLE_LIST* table_list); void wsrep_to_isolation_end(THD *thd); void wsrep_cleanup_transaction(THD *thd); int wsrep_to_buf_helper( THD* thd, const char *query, uint query_len, uchar** buf, size_t* buf_len); int wsrep_create_event_query(THD *thd, uchar** buf, size_t* buf_len); extern bool wsrep_grant_mdl_exception(MDL_context *requestor_ctx, MDL_ticket *ticket, const MDL_key *key); IO_CACHE * get_trans_log(THD * thd); bool wsrep_trans_cache_is_empty(THD *thd); void thd_binlog_flush_pending_rows_event(THD *thd, bool stmt_end); void thd_binlog_rollback_stmt(THD * thd); void thd_binlog_trx_reset(THD * thd); typedef void (*wsrep_thd_processor_fun)(THD *); pthread_handler_t start_wsrep_THD(void *arg); int wsrep_wait_committing_connections_close(int wait_time); void wsrep_close_client_connections(my_bool wait_to_end); void wsrep_close_applier(THD *thd); void wsrep_close_applier_threads(int count); void wsrep_wait_appliers_close(THD *thd); void wsrep_kill_mysql(THD *thd); void wsrep_close_threads(THD *thd); void wsrep_copy_query(THD *thd); bool wsrep_is_show_query(enum enum_sql_command command); void wsrep_replay_transaction(THD *thd); bool wsrep_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table, HA_CREATE_INFO *create_info); bool wsrep_node_is_donor(); bool wsrep_node_is_synced(); #else /* WITH_WSREP */ #define WSREP(T) (0) #define WSREP_ON (0) #define WSREP_EMULATE_BINLOG(thd) (0) #define WSREP_CLIENT(thd) (0) #define WSREP_FORMAT(my_format) ((ulong)my_format) #define WSREP_PROVIDER_EXISTS (0) #define wsrep_emulate_bin_log (0) #define wsrep_xid_seqno(X) (0) #define wsrep_to_isolation (0) #define wsrep_init() (1) #define wsrep_prepend_PATH(X) #define wsrep_before_SE() (0) #define wsrep_init_startup(X) #define wsrep_must_sync_wait(...) (0) #define wsrep_sync_wait(...) (0) #define wsrep_to_isolation_begin(...) (0) #define wsrep_register_hton(...) do { } while(0) #define wsrep_check_opts() (0) #define wsrep_stop_replication(X) do { } while(0) #define wsrep_inited (0) #define wsrep_deinit(X) do { } while(0) #define wsrep_recover() do { } while(0) #define wsrep_slave_threads (1) #define wsrep_replicate_myisam (0) #define wsrep_thr_init() do {} while(0) #define wsrep_thr_deinit() do {} while(0) #define wsrep_running_threads (0) #endif /* WITH_WSREP */ #endif /* WSREP_MYSQLD_H */