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/* 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 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;
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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