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wsrep_mysqld.h
/* Copyright 2008-2023 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 02110-1335 USA */ #ifndef WSREP_MYSQLD_H #define WSREP_MYSQLD_H #include <wsrep.h> #ifdef WITH_WSREP #include <mysql/plugin.h> #include "mysql/service_wsrep.h" #include <my_global.h> #include <my_pthread.h> #include "log.h" #include "mysqld.h" typedef struct st_mysql_show_var SHOW_VAR; #include <sql_priv.h> #include "mdl.h" #include "sql_table.h" #include "wsrep_mysqld_c.h" #include "wsrep/provider.hpp" #include "wsrep/streaming_context.hpp" #include "wsrep_api.h" #include <map> #define WSREP_UNDEFINED_TRX_ID ULONGLONG_MAX class THD; // Global wsrep parameters // 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 ulong wsrep_debug; extern my_bool wsrep_convert_LOCK_to_trx; extern ulong wsrep_retry_autocommit; extern my_bool wsrep_auto_increment_control; extern my_bool wsrep_drupal_282555_workaround; 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 my_bool wsrep_certify_nonPK; extern long int wsrep_protocol_version; extern my_bool wsrep_desync; extern ulong wsrep_reject_queries; extern my_bool wsrep_recovery; extern my_bool wsrep_replicate_myisam; extern my_bool wsrep_log_conflicts; extern ulong wsrep_mysql_replication_bundle; extern my_bool wsrep_load_data_splitting; 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_trx_fragment_unit; extern ulong wsrep_SR_store_type; extern uint wsrep_ignore_apply_errors; extern ulong wsrep_running_threads; extern ulong wsrep_running_applier_threads; extern ulong wsrep_running_rollbacker_threads; extern bool wsrep_new_cluster; extern bool wsrep_gtid_mode; extern uint32 wsrep_gtid_domain_id; extern std::atomic <bool > wsrep_thread_create_failed; extern ulonglong wsrep_mode; extern my_bool wsrep_strict_ddl; enum enum_wsrep_reject_types { WSREP_REJECT_NONE, /* nothing rejected */ WSREP_REJECT_ALL, /* reject all queries, with UNKNOWN_COMMAND error */ WSREP_REJECT_ALL_KILL /* kill existing connections and reject all queries*/ }; enum enum_wsrep_OSU_method { WSREP_OSU_TOI, WSREP_OSU_RSU, WSREP_OSU_NONE, }; enum enum_wsrep_sync_wait { WSREP_SYNC_WAIT_NONE= 0x0, // 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_BEFORE_SHOW= 0x8, WSREP_SYNC_WAIT_MAX= 0xF }; enum enum_wsrep_ignore_apply_error { WSREP_IGNORE_ERRORS_NONE= 0x0, WSREP_IGNORE_ERRORS_ON_RECONCILING_DDL= 0x1, WSREP_IGNORE_ERRORS_ON_RECONCILING_DML= 0x2, WSREP_IGNORE_ERRORS_ON_DDL= 0x4, WSREP_IGNORE_ERRORS_MAX= 0x7 }; /* wsrep_mode features */ enum enum_wsrep_mode { WSREP_MODE_STRICT_REPLICATION= (1ULL << 0), WSREP_MODE_BINLOG_ROW_FORMAT_ONLY= (1ULL << 1), WSREP_MODE_REQUIRED_PRIMARY_KEY= (1ULL << 2), WSREP_MODE_REPLICATE_MYISAM= (1ULL << 3), WSREP_MODE_REPLICATE_ARIA= (1ULL << 4), WSREP_MODE_DISALLOW_LOCAL_GTID= (1ULL << 5), WSREP_MODE_BF_MARIABACKUP= (1ULL << 6) }; // Streaming Replication #define WSREP_FRAG_BYTES 0 #define WSREP_FRAG_ROWS 1 #define WSREP_FRAG_STATEMENTS 2 #define WSREP_SR_STORE_NONE 0 #define WSREP_SR_STORE_TABLE 1 extern const char *wsrep_fragment_units[]; extern const char *wsrep_SR_store_types[]; // MySQL status variables extern my_bool wsrep_connected; 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; extern char* wsrep_provider_capabilities; extern char* wsrep_cluster_capabilities; int wsrep_show_status(THD *thd, SHOW_VAR *var, void *buff, system_status_var *status_var, enum_var_type scope); int wsrep_show_ready(THD *thd, SHOW_VAR *var, void *buff, system_status_var *, enum_var_type); void wsrep_free_status(THD *thd); void wsrep_update_cluster_state_uuid(const char* str); /* Filters out --wsrep-new-cluster oprtion from argv[] * should be called in the very beginning of main() */ void wsrep_filter_new_cluster (int* argc, char* argv[]); 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); /* Recover streaming transactions from fragment storage */ void wsrep_recover_sr_from_storage(THD *); // Other wsrep global variables extern my_bool wsrep_inited; // whether wsrep is initialized ? extern bool wsrep_service_started; extern "C" void wsrep_fire_rollbacker(THD *thd); extern "C" uint32 wsrep_thd_wsrep_rand(THD *thd); extern "C" time_t wsrep_thd_query_start(THD *thd); extern void wsrep_close_client_connections(my_bool wait_to_end, THD *except_caller_thd= NULL); 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 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); /* new defines */ extern void wsrep_stop_replication(THD *thd); extern bool wsrep_start_replication(const char *wsrep_cluster_address); extern void wsrep_shutdown_replication(); extern bool wsrep_check_mode (enum_wsrep_mode mask); extern bool wsrep_check_mode_after_open_table (THD *thd, const handlerton *hton, TABLE_LIST *tables); extern bool wsrep_check_mode_before_cmd_execute (THD *thd); 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 bool wsrep_sync_wait (THD* thd, enum enum_sql_command command); extern enum wsrep::provider::status wsrep_sync_wait_upto (THD* thd, wsrep_gtid_t* upto, int timeout); extern int wsrep_check_opts(); extern void wsrep_prepend_PATH (const char* path); extern bool wsrep_append_fk_parent_table(THD* thd, TABLE_LIST* table, wsrep::key_array* keys); extern bool wsrep_reload_ssl(); /* Other global variables */ extern wsrep_seqno_t wsrep_locked_seqno; /* A wrapper function for MySQL log functions. The call will prefix the log message with WSREP and forward the result buffer to fun. */ void WSREP_LOG(void (*fun)(const char* fmt, ...), const char* fmt, ...); #define WSREP_SYNC_WAIT(thd_, before_) \ { if (WSREP_CLIENT(thd_) && \ wsrep_sync_wait(thd_, before_)) goto wsrep_error_label; } #define WSREP_MYSQL_DB (char *)"mysql" #define WSREP_TO_ISOLATION_BEGIN(db_, table_, table_list_) \ if (WSREP_ON && WSREP(thd) && wsrep_to_isolation_begin(thd, db_, table_, table_list_)) \ goto wsrep_error_label; #define WSREP_TO_ISOLATION_BEGIN_CREATE(db_, table_, table_list_, create_info_) \ if (WSREP_ON && WSREP(thd) && \ wsrep_to_isolation_begin(thd, db_, table_, \ table_list_, nullptr, nullptr, create_info_))\ goto wsrep_error_label; #define WSREP_TO_ISOLATION_BEGIN_ALTER(db_, table_, table_list_, alter_info_, fk_tables_, create_info_) \ if (WSREP(thd) && wsrep_thd_is_local(thd) && \ wsrep_to_isolation_begin(thd, db_, table_, \ table_list_, alter_info_, fk_tables_, create_info_)) #define WSREP_TO_ISOLATION_END \ if ((WSREP(thd) && wsrep_thd_is_local_toi(thd)) || \ wsrep_thd_is_in_rsu(thd)) \ wsrep_to_isolation_end(thd); /* Checks if lex->no_write_to_binlog is set for statements that use LOCAL or NO_WRITE_TO_BINLOG. */ #define WSREP_TO_ISOLATION_BEGIN_WRTCHK(db_, table_, table_list_) \ if (WSREP(thd) && !thd->lex->no_write_to_binlog \ && wsrep_to_isolation_begin(thd, db_, table_, table_list_)) \ goto wsrep_error_label; #define WSREP_PROVIDER_EXISTS (WSREP_PROVIDER_EXISTS_) static inline bool wsrep_cluster_address_exists() { if (mysqld_server_started) mysql_mutex_assert_owner(&LOCK_global_system_variables); return wsrep_cluster_address && wsrep_cluster_address[0]; } extern my_bool wsrep_ready_get(); extern void wsrep_ready_wait(); 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 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_cond_t COND_wsrep_slave_threads; extern mysql_mutex_t LOCK_wsrep_gtid_wait_upto; extern mysql_mutex_t LOCK_wsrep_cluster_config; extern mysql_mutex_t LOCK_wsrep_desync; extern mysql_mutex_t LOCK_wsrep_SR_pool; extern mysql_mutex_t LOCK_wsrep_SR_store; extern mysql_mutex_t LOCK_wsrep_config_state; extern mysql_mutex_t LOCK_wsrep_group_commit; extern mysql_mutex_t LOCK_wsrep_joiner_monitor; extern mysql_mutex_t LOCK_wsrep_donor_monitor; extern mysql_cond_t COND_wsrep_joiner_monitor; extern mysql_cond_t COND_wsrep_donor_monitor; extern int wsrep_to_isolation; #ifdef GTID_SUPPORT extern rpl_sidno wsrep_sidno; #endif /* GTID_SUPPORT */ extern my_bool wsrep_preordered_opt; #ifdef HAVE_PSI_INTERFACE 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_replaying; extern PSI_cond_key key_COND_wsrep_replaying; extern PSI_mutex_key key_LOCK_wsrep_slave_threads; extern PSI_cond_key key_COND_wsrep_slave_threads; extern PSI_mutex_key key_LOCK_wsrep_gtid_wait_upto; extern PSI_cond_key key_COND_wsrep_gtid_wait_upto; extern PSI_mutex_key key_LOCK_wsrep_cluster_config; extern PSI_mutex_key key_LOCK_wsrep_desync; extern PSI_mutex_key key_LOCK_wsrep_SR_pool; extern PSI_mutex_key key_LOCK_wsrep_SR_store; extern PSI_mutex_key key_LOCK_wsrep_global_seqno; extern PSI_mutex_key key_LOCK_wsrep_thd_queue; extern PSI_cond_key key_COND_wsrep_thd_queue; extern PSI_mutex_key key_LOCK_wsrep_joiner_monitor; extern PSI_mutex_key key_LOCK_wsrep_donor_monitor; extern PSI_file_key key_file_wsrep_gra_log; extern PSI_thread_key key_wsrep_sst_joiner; extern PSI_thread_key key_wsrep_sst_donor; extern PSI_thread_key key_wsrep_rollbacker; extern PSI_thread_key key_wsrep_applier; extern PSI_thread_key key_wsrep_sst_joiner_monitor; extern PSI_thread_key key_wsrep_sst_donor_monitor; #endif /* HAVE_PSI_INTERFACE */ struct TABLE_LIST; class Alter_info; int wsrep_to_isolation_begin(THD *thd, const char *db_, const char *table_, const TABLE_LIST* table_list, const Alter_info* alter_info= nullptr, const wsrep::key_array *fk_tables= nullptr, const HA_CREATE_INFO* create_info= nullptr); bool wsrep_should_replicate_ddl(THD* thd, const handlerton *db_type); bool wsrep_should_replicate_ddl_iterate(THD* thd, const TABLE_LIST* table_list); void wsrep_to_isolation_end(THD *thd); bool wsrep_append_SR_keys(THD *thd); int wsrep_to_buf_helper( THD* thd, const char *query, uint query_len, uchar** buf, size_t* buf_len); int wsrep_create_trigger_query(THD *thd, uchar** buf, size_t* buf_len); int wsrep_create_event_query(THD *thd, uchar** buf, size_t* buf_len); void wsrep_init_sidno(const wsrep_uuid_t&); bool wsrep_node_is_donor(); bool wsrep_node_is_synced(); void wsrep_init_SR(); void wsrep_verify_SE_checkpoint(const wsrep_uuid_t& uuid, wsrep_seqno_t seqno); int wsrep_replay_from_SR_store(THD*, const wsrep_trx_meta_t&); class Log_event; int wsrep_ignored_error_code(Log_event* ev, int error); int wsrep_must_ignore_error(THD* thd); struct wsrep_server_gtid_t { uint32 domain_id; uint32 server_id; uint64 seqno; }; class Wsrep_gtid_server { public: uint32 domain_id; uint32 server_id; Wsrep_gtid_server() : m_force_signal(false) , m_seqno(0) , m_committed_seqno(0) { } void gtid(const wsrep_server_gtid_t& gtid) { domain_id= gtid.domain_id; server_id= gtid.server_id; m_seqno= gtid.seqno; } wsrep_server_gtid_t gtid() { wsrep_server_gtid_t gtid; gtid.domain_id= domain_id; gtid.server_id= server_id; gtid.seqno= m_seqno; return gtid; } void seqno(const uint64 seqno) { m_seqno= seqno; } uint64 seqno() const { return m_seqno; } uint64 seqno_committed() const { return m_committed_seqno; } uint64 seqno_inc() { m_seqno++; return m_seqno; } const wsrep_server_gtid_t& undefined() { return m_undefined; } int wait_gtid_upto(const uint64_t seqno, uint timeout) { int wait_result= 0; struct timespec wait_time; int ret= 0; mysql_cond_t wait_cond; mysql_cond_init(key_COND_wsrep_gtid_wait_upto, &wait_cond, NULL); set_timespec(wait_time, timeout); mysql_mutex_lock(&LOCK_wsrep_gtid_wait_upto); std::multimap<uint64, mysql_cond_t*>::iterator it; if (seqno > m_seqno) { try { it= m_wait_map.insert(std::make_pair(seqno, &wait_cond)); } catch (std::bad_alloc& e) { ret= ENOMEM; } while (!ret && (m_committed_seqno < seqno) && !m_force_signal) { wait_result= mysql_cond_timedwait(&wait_cond, &LOCK_wsrep_gtid_wait_upto, &wait_time); if (wait_result == ETIMEDOUT || wait_result == ETIME) { ret= wait_result; break; } } if (ret != ENOMEM) { m_wait_map.erase(it); } } mysql_mutex_unlock(&LOCK_wsrep_gtid_wait_upto); mysql_cond_destroy(&wait_cond); return ret; } void signal_waiters(uint64 seqno, bool signal_all) { mysql_mutex_lock(&LOCK_wsrep_gtid_wait_upto); if (!signal_all && (m_committed_seqno >= seqno)) { mysql_mutex_unlock(&LOCK_wsrep_gtid_wait_upto); return; } m_force_signal= true; std::multimap<uint64, mysql_cond_t*>::iterator it_end; std::multimap<uint64, mysql_cond_t*>::iterator it_begin; if (signal_all) { it_end= m_wait_map.end(); } else { it_end= m_wait_map.upper_bound(seqno); } if (m_committed_seqno < seqno) { m_committed_seqno= seqno; } for (it_begin = m_wait_map.begin(); it_begin != it_end; ++it_begin) { mysql_cond_signal(it_begin->second); } m_force_signal= false; mysql_mutex_unlock(&LOCK_wsrep_gtid_wait_upto); } private: const wsrep_server_gtid_t m_undefined= {0,0,0}; std::multimap<uint64, mysql_cond_t*> m_wait_map; bool m_force_signal; Atomic_counter<uint64_t> m_seqno; Atomic_counter<uint64_t> m_committed_seqno; }; extern Wsrep_gtid_server wsrep_gtid_server; void wsrep_init_gtid(); bool wsrep_check_gtid_seqno(const uint32&, const uint32&, uint64&); bool wsrep_get_binlog_gtid_seqno(wsrep_server_gtid_t&); int wsrep_append_table_keys(THD* thd, TABLE_LIST* first_table, TABLE_LIST* table_list, Wsrep_service_key_type key_type); extern void wsrep_handle_mdl_conflict(MDL_context *requestor_ctx, const MDL_ticket *ticket, const MDL_key *key); enum wsrep_thread_type { WSREP_APPLIER_THREAD=1, WSREP_ROLLBACKER_THREAD=2 }; typedef void (*wsrep_thd_processor_fun)(THD*, void *); class Wsrep_thd_args { public: Wsrep_thd_args(wsrep_thd_processor_fun fun, wsrep_thread_type thread_type, pthread_t thread_id) : fun_ (fun), thread_type_ (thread_type), thread_id_ (thread_id) { } wsrep_thd_processor_fun fun() { return fun_; } pthread_t* thread_id() {return &thread_id_; } enum wsrep_thread_type thread_type() {return thread_type_;} private: Wsrep_thd_args(const Wsrep_thd_args&); Wsrep_thd_args& operator=(const Wsrep_thd_args&); wsrep_thd_processor_fun fun_; enum wsrep_thread_type thread_type_; pthread_t thread_id_; }; void* start_wsrep_THD(void*); void wsrep_close_threads(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(); /** * Check if the wsrep provider (ie the Galera library) is capable of * doing streaming replication. * @return true if SR capable */ bool wsrep_provider_is_SR_capable(); /** * Initialize WSREP server instance. * * @return Zero on success, non-zero on error. */ int wsrep_init_server(); /** * Initialize WSREP globals. This should be done after server initialization * is complete and the server has joined to the cluster. * */ void wsrep_init_globals(); /** * Deinit and release WSREP resources. */ void wsrep_deinit_server(); /** * Convert streaming fragment unit (WSREP_FRAG_BYTES, WSREP_FRAG_ROWS...) * to corresponding wsrep-lib fragment_unit */ enum wsrep::streaming_context::fragment_unit wsrep_fragment_unit(ulong unit); wsrep::key wsrep_prepare_key_for_toi(const char* db, const char* table, enum wsrep::key::type type); void wsrep_wait_ready(THD *thd); void wsrep_ready_set(bool ready_value); #else /* !WITH_WSREP */ /* These macros are needed to compile MariaDB without WSREP support * (e.g. embedded) */ #define WSREP_PROVIDER_EXISTS (0) #define wsrep_emulate_bin_log (0) #define wsrep_to_isolation (0) #define wsrep_before_SE() (0) #define wsrep_init_startup(X) #define wsrep_check_opts() (0) #define wsrep_thr_init() do {} while(0) #define wsrep_thr_deinit() do {} while(0) #define wsrep_init_globals() do {} while(0) #define wsrep_create_appliers(X) do {} while(0) #define wsrep_should_replicate_ddl(X,Y) (1) #define wsrep_cluster_address_exists() (false) #define WSREP_MYSQL_DB (0) #define WSREP_TO_ISOLATION_BEGIN(db_, table_, table_list_) do { } while(0) #define WSREP_TO_ISOLATION_BEGIN_ALTER(db_, table_, table_list_, alter_info_, fk_tables_) #define WSREP_TO_ISOLATION_END #define WSREP_TO_ISOLATION_BEGIN_WRTCHK(db_, table_, table_list_) #define WSREP_SYNC_WAIT(thd_, before_) #endif /* WITH_WSREP */ #endif /* WSREP_MYSQLD_H */
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