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mariadb/sql/wsrep_mysqld.h
Sergei Golubchik 3620910eea cleanup: galera merge, simple changes
2014-10-01 23:38:27 +02:00

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/* Copyright 2008-2013 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <wsrep.h>
#ifndef WSREP_MYSQLD_H
#define WSREP_MYSQLD_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_exec_mode {
LOCAL_STATE,
REPL_RECV,
TOTAL_ORDER,
LOCAL_COMMIT
};
enum wsrep_query_state {
QUERY_IDLE,
QUERY_EXEC,
QUERY_COMMITTING,
QUERY_EXITING,
QUERY_ROLLINGBACK,
};
enum wsrep_conflict_state {
NO_CONFLICT,
MUST_ABORT,
ABORTING,
ABORTED,
MUST_REPLAY,
REPLAYING,
RETRY_AUTOCOMMIT,
CERT_FAILURE,
};
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;
};
// 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 MYSQL_PLUGIN_IMPORT my_bool 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 wsrep_max_protocol_version;
extern long wsrep_protocol_version;
extern ulong wsrep_forced_binlog_format;
extern ulong wsrep_OSU_method_options;
extern my_bool wsrep_desync;
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;
enum enum_wsrep_OSU_method { WSREP_OSU_TOI, WSREP_OSU_RSU };
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);
/* 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);
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" enum wsrep_exec_mode wsrep_thd_exec_mode(THD *thd);
extern "C" enum wsrep_conflict_state wsrep_thd_conflict_state(THD *thd);
extern "C" enum wsrep_query_state wsrep_thd_query_state(THD *thd);
extern "C" const char * wsrep_thd_exec_mode_str(THD *thd);
extern "C" const char * wsrep_thd_conflict_state_str(THD *thd);
extern "C" const char * wsrep_thd_query_state_str(THD *thd);
extern "C" wsrep_ws_handle_t* wsrep_thd_ws_handle(THD *thd);
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_conflict_state(
THD *thd, enum wsrep_conflict_state state);
extern "C" void wsrep_thd_set_trx_to_replay(THD *thd, uint64 trx_id);
extern "C" void wsrep_thd_LOCK(THD *thd);
extern "C" void wsrep_thd_UNLOCK(THD *thd);
extern "C" uint32 wsrep_thd_wsrep_rand(THD *thd);
extern "C" time_t wsrep_thd_query_start(THD *thd);
extern "C" my_thread_id wsrep_thd_thread_id(THD *thd);
extern "C" int64_t wsrep_thd_trx_seqno(THD *thd);
extern "C" query_id_t wsrep_thd_query_id(THD *thd);
extern "C" char * wsrep_thd_query(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 "C" void wsrep_thd_awake(THD *thd, my_bool signal);
extern "C" int wsrep_thd_retry_counter(THD *thd);
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_sync_wait (THD* thd, uint mask = WSREP_SYNC_WAIT_BEFORE_READ);
extern int wsrep_check_opts (int argc, char* const* argv);
extern void wsrep_prepend_PATH (const char* path);
/* some inline functions are defined in wsrep_mysqld_inl.h */
/* Other global variables */
extern wsrep_seqno_t wsrep_locked_seqno;
#define WSREP_ON \
(global_system_variables.wsrep_on)
#define WSREP(thd) \
(WSREP_ON && (thd && 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)
// MySQL logging functions don't seem to understand long long length modifer.
// This is a workaround. It also prefixes 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, wsrep_thd_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();
enum wsrep_trx_status {
WSREP_TRX_OK,
WSREP_TRX_CERT_FAIL, /* certification failure, must abort */
WSREP_TRX_SIZE_EXCEEDED, /* trx size exceeded */
WSREP_TRX_ERROR, /* native mysql error */
};
extern enum wsrep_trx_status
wsrep_run_wsrep_commit(THD *thd, handlerton *hton, bool all);
class Ha_trx_info;
struct THD_TRANS;
void wsrep_register_hton(THD* thd, bool all);
void wsrep_post_commit(THD* thd, bool all);
void wsrep_brute_force_killer(THD *thd);
int wsrep_hire_brute_force_killer(THD *thd, uint64_t trx_id);
extern "C" bool wsrep_consistency_check(void *thd_ptr);
/* 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 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;
#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_sp(THD *thd, 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);
int wsrep_alter_event_query(THD *thd, uchar** buf, size_t* buf_len);
struct xid_t;
void wsrep_get_SE_checkpoint(xid_t*);
void wsrep_set_SE_checkpoint(xid_t*);
void wsrep_init_sidno(const wsrep_uuid_t&);
void wsrep_xid_init(xid_t*, const wsrep_uuid_t*, wsrep_seqno_t);
const wsrep_uuid_t* wsrep_xid_uuid(const xid_t*);
wsrep_seqno_t wsrep_xid_seqno(const xid_t*);
extern "C" int wsrep_is_wsrep_xid(const void* xid);
extern "C" my_thread_id wsrep_thd_thread_id(THD *thd);
extern "C" char *wsrep_thd_query(THD *thd);
extern bool
wsrep_grant_mdl_exception(MDL_context *requestor_ctx,
MDL_ticket *ticket);
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);
int wsrep_create_sp(THD *thd, uchar** buf, size_t* buf_len);
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);
int wsrep_create_trigger_query(THD *thd, uchar** buf, size_t* buf_len);
#else /* WITH_WSREP */
#define WSREP(T) (0)
#define WSREP_ON (0)
#define WSREP_EMULATE_BINLOG(thd) (0)
#define WSREP_CLIENT(thd) (0)
#define wsrep_emulate_bin_log (0)
#define wsrep_xid_seqno(X) (0)
#define wsrep_is_wsrep_xid(X) (0)
#define wsrep_to_isolation (0)
#define wsrep_recovery (0)
#define wsrep_init() (1)
#define wsrep_prepend_PATH(X)
#define wsrep_before_SE() (0)
#define wsrep_init_startup(X)
#define wsrep_sync_wait(...) (0)
#define wsrep_to_isolation_begin(...) (0)
#define wsrep_register_hton(...) do { } while(0)
#define wsrep_post_commit(...) 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_filter_new_cluster(X,Y) do { } while(0)
#define wsrep_recover() do { } while(0)
#define wsrep_slave_threads (1)
#endif /* WITH_WSREP */
#endif /* WSREP_MYSQLD_H */
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