MySQL 8.0.31
Source Code Documentation
binlog.h
Go to the documentation of this file.
1#ifndef BINLOG_H_INCLUDED
2/* Copyright (c) 2010, 2022, Oracle and/or its affiliates.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
7
8 This program is also distributed with certain software (including
9 but not limited to OpenSSL) that is licensed under separate terms,
10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
12 permission to link the program and your derivative works with the
13 separately licensed software that they have included with MySQL.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License, version 2.0, for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
23
24#define BINLOG_H_INCLUDED
25
26#include <string.h>
27#include <sys/types.h>
28#include <time.h>
29#include <atomic>
30#include <utility>
31
32#include "libbinlogevents/include/binlog_event.h" // enum_binlog_checksum_alg
33#include "m_string.h" // llstr
34#include "my_dbug.h"
35#include "my_inttypes.h"
36#include "my_io.h"
37#include "my_sharedlib.h"
38#include "my_sys.h"
47#include "mysql_com.h" // Item_result
50#include "sql/tc_log.h" // TC_LOG
51#include "sql/transaction_info.h" // Transaction_ctx
52#include "thr_mutex.h"
53
56class Gtid_set;
57class Ha_trx_info;
59class Log_event;
60class Master_info;
61class Relay_log_info;
62class Rows_log_event;
63class Sid_map;
64class THD;
67class user_var_entry;
69
70struct Gtid;
71
73
74/*
75 Maximum unique log filename extension.
76 Note: setting to 0x7FFFFFFF due to atol windows
77 overflow/truncate.
78 */
79#define MAX_LOG_UNIQUE_FN_EXT 0x7FFFFFFF
80
81/*
82 Maximum allowed unique log filename extension for
83 RESET MASTER TO command - 2 Billion
84 */
85#define MAX_ALLOWED_FN_EXT_RESET_MASTER 2000000000
86
89 char *value;
90 ulong length;
94};
95
96/* log info errors */
97#define LOG_INFO_EOF -1
98#define LOG_INFO_IO -2
99#define LOG_INFO_INVALID -3
100#define LOG_INFO_SEEK -4
101#define LOG_INFO_MEM -6
102#define LOG_INFO_FATAL -7
103#define LOG_INFO_IN_USE -8
104#define LOG_INFO_EMFILE -9
105#define LOG_INFO_BACKUP_LOCK -10
106
107/* bitmap to MYSQL_BIN_LOG::close() */
108#define LOG_CLOSE_INDEX 1
109#define LOG_CLOSE_TO_BE_OPENED 2
110#define LOG_CLOSE_STOP_EVENT 4
111
112/*
113 Note that we destroy the lock mutex in the destructor here.
114 This means that object instances cannot be destroyed/go out of scope
115 until we have reset thd->current_linfo to NULL;
116 */
117struct LOG_INFO {
121 bool fatal; // if the purge happens to give us a negative offset
122 int entry_index; // used in purge_logs(), calculatd in find_log_pos().
127 pos(0),
128 fatal(false),
129 entry_index(0),
131 memset(log_file_name, 0, FN_REFLEN);
132 }
133};
134
135/*
136 TODO use mmap instead of IO_CACHE for binlog
137 (mmap+fsync is two times faster than write+fsync)
138*/
139class MYSQL_BIN_LOG : public TC_LOG {
140 public:
141 class Binlog_ofile;
142
143 private:
145
146 /* LOCK_log is inited by init_pthread_objects() */
148 char *name;
150 char db[NAME_LEN + 1];
153
154 /** Instrumentation key to use for file io in @c log_file */
156 /** The instrumentation key to use for @ LOCK_log. */
158 /** The instrumentation key to use for @ LOCK_index. */
160 /** The instrumentation key to use for @ LOCK_binlog_end_pos. */
162 /** The PFS instrumentation key for @ LOCK_commit_queue. */
164 /** The PFS instrumentation key for @ LOCK_done. */
166 /** The PFS instrumentation key for @ LOCK_flush_queue. */
168 /** The PFS instrumentation key for @ LOCK_sync_queue. */
170 /** The PFS instrumentation key for @ COND_done. */
172 /** The PFS instrumentation key for @ COND_flush_queue. */
174 /** The instrumentation key to use for @ LOCK_commit. */
176 /** The instrumentation key to use for @ LOCK_sync. */
178 /** The instrumentation key to use for @ LOCK_xids. */
180 /** The instrumentation key to use for @ update_cond. */
182 /** The instrumentation key to use for @ prep_xids_cond. */
184 /** The instrumentation key to use for opening the log file. */
186 /** The instrumentation key to use for opening the log index file. */
188 /** The instrumentation key to use for opening a log cache file. */
190 /** The instrumentation key to use for opening a log index cache file. */
192
193 /* POSIX thread objects are inited by init_pthread_objects() */
200
201 std::atomic<my_off_t> atomic_binlog_end_pos;
205 /*
206 crash_safe_index_file is temp file used for guaranteeing
207 index file crash safe when master server restarts.
208 */
211 /*
212 purge_file is a temp file used in purge_logs so that the index file
213 can be updated before deleting files from disk, yielding better crash
214 recovery. It is created on demand the first time purge_logs is called
215 and then reused for subsequent calls. It is cleaned up in cleanup().
216 */
219 /*
220 The max size before rotation (usable only if log_type == LOG_BIN: binary
221 logs and relay logs).
222 For a binlog, max_size should be max_binlog_size.
223 For a relay log, it should be max_relay_log_size if this is non-zero,
224 max_binlog_size otherwise.
225 max_size is set in init(), and dynamically changed (when one does SET
226 GLOBAL MAX_BINLOG_SIZE|MAX_RELAY_LOG_SIZE) by fix_max_binlog_size and
227 fix_max_relay_log_size).
228 */
229 ulong max_size;
230
231 // current file sequence number for load data infile binary logging
233
234 /* pointer to the sync period variable, for binlog this will be
235 sync_binlog_period, for relay log this will be
236 sync_relay_log_period
237 */
240
242 std::atomic<int32> m_atomic_prep_xids{0};
243
244 /**
245 Increment the prepared XID counter.
246 */
247 void inc_prep_xids(THD *thd);
248
249 /**
250 Decrement the prepared XID counter.
251
252 Signal m_prep_xids_cond if the counter reaches zero.
253 */
254 void dec_prep_xids(THD *thd);
255
257
259
260 public:
261 /*
262 This is used to start writing to a new log file. The difference from
263 new_file() is locking. new_file_without_locking() does not acquire
264 LOCK_log.
265 */
267 Format_description_log_event *extra_description_event);
268
269 private:
270 int new_file_impl(bool need_lock,
271 Format_description_log_event *extra_description_event);
272
273 bool open(PSI_file_key log_file_key, const char *log_name,
274 const char *new_name, uint32 new_index_number);
275 bool init_and_set_log_file_name(const char *log_name, const char *new_name,
276 uint32 new_index_number);
277 int generate_new_name(char *new_name, const char *log_name,
278 uint32 new_index_number = 0);
279
280 protected:
281 /**
282 @brief Notifies waiting threads that binary log has been updated
283 */
284 void signal_update();
285
286 public:
287 const char *generate_name(const char *log_name, const char *suffix,
288 char *buff);
289 bool is_open() const { return atomic_log_state != LOG_CLOSED; }
290
291 /* This is relay log */
293
294 uint8 checksum_alg_reset; // to contain a new value when binlog is rotated
295 /*
296 Holds the last seen in Relay-Log FD's checksum alg value.
297 The initial value comes from the slave's local FD that heads
298 the very first Relay-Log file. In the following the value may change
299 with each received master's FD_m.
300 Besides to be used in verification events that IO thread receives
301 (except the 1st fake Rotate, see @c Master_info:: checksum_alg_before_fd),
302 the value specifies if/how to compute checksum for slave's local events
303 and the first fake Rotate (R_f^1) coming from the master.
304 R_f^1 needs logging checksum-compatibly with the RL's heading FD_s.
305
306 Legends for the checksum related comments:
307
308 FD - Format-Description event,
309 R - Rotate event
310 R_f - The fake Rotate event
311 E - An arbitrary event
312
313 The underscore indexes for any event
314 `_s' - Indicates the event is generated by the Replica
315 `_m' - By the Source
316
317 Two special underscore indexes of FD:
318 FD_q - Format Description event for queuing (relay-logging)
319 FD_e - Format Description event for executing (relay-logging)
320
321 Upper indexes:
322 E^n - n:th event is a sequence
323
324 RL - Relay Log
325 (A) - checksum algorithm descriptor value
326 FD.(A) - the value of (A) in FD
327 */
329
330 MYSQL_BIN_LOG(uint *sync_period, bool relay_log = false);
331 ~MYSQL_BIN_LOG() override;
332
334 PSI_mutex_key key_LOCK_index, PSI_mutex_key key_LOCK_commit,
335 PSI_mutex_key key_LOCK_commit_queue, PSI_mutex_key key_LOCK_done,
336 PSI_mutex_key key_LOCK_flush_queue, PSI_mutex_key key_LOCK_log,
337 PSI_mutex_key key_LOCK_binlog_end_pos, PSI_mutex_key key_LOCK_sync,
338 PSI_mutex_key key_LOCK_sync_queue, PSI_mutex_key key_LOCK_xids,
339 PSI_cond_key key_COND_done, PSI_cond_key key_COND_flush_queue,
340 PSI_cond_key key_update_cond, PSI_cond_key key_prep_xids_cond,
341 PSI_file_key key_file_log, PSI_file_key key_file_log_index,
342 PSI_file_key key_file_log_cache, PSI_file_key key_file_log_index_cache) {
343 m_key_COND_done = key_COND_done;
344 m_key_COND_flush_queue = key_COND_flush_queue;
345
346 m_key_LOCK_commit_queue = key_LOCK_commit_queue;
347 m_key_LOCK_done = key_LOCK_done;
348 m_key_LOCK_flush_queue = key_LOCK_flush_queue;
349 m_key_LOCK_sync_queue = key_LOCK_sync_queue;
350
351 m_key_LOCK_index = key_LOCK_index;
352 m_key_LOCK_log = key_LOCK_log;
353 m_key_LOCK_binlog_end_pos = key_LOCK_binlog_end_pos;
354 m_key_LOCK_commit = key_LOCK_commit;
355 m_key_LOCK_sync = key_LOCK_sync;
356 m_key_LOCK_xids = key_LOCK_xids;
357 m_key_update_cond = key_update_cond;
358 m_key_prep_xids_cond = key_prep_xids_cond;
359 m_key_file_log = key_file_log;
360 m_key_file_log_index = key_file_log_index;
361 m_key_file_log_cache = key_file_log_cache;
362 m_key_file_log_index_cache = key_file_log_index_cache;
363 }
364
365 public:
366 /** Manage the MTS dependency tracking */
368
369 /**
370 Find the oldest binary log referenced by the index file
371
372 @param[out] binlog_file_name the file name of oldest log found
373 @param[out] errmsg the error message outputted, which is left untouched
374 if the function returns false
375 @return false on success, true on error.
376 */
377 bool find_first_log(std::string &binlog_file_name, std::string &errmsg);
378
379 /**
380 Find the oldest binary log that contains any GTID that
381 is not in the given gtid set.
382
383 @param[out] binlog_file_name the file name of oldest binary log found
384 @param[in] gtid_set the given gtid set
385 @param[out] first_gtid the first GTID information from the binary log
386 file returned at binlog_file_name
387 @param[out] errmsg the error message outputted, which is left untouched
388 if the function returns false
389 @return false on success, true on error.
390 */
391 bool find_first_log_not_in_gtid_set(char *binlog_file_name,
392 const Gtid_set *gtid_set,
393 Gtid *first_gtid, std::string &errmsg);
394
395 /**
396 Reads the set of all GTIDs in the binary/relay log, and the set
397 of all lost GTIDs in the binary log, and stores each set in
398 respective argument.
399
400 @param gtid_set Will be filled with all GTIDs in this binary/relay
401 log.
402 @param lost_groups Will be filled with all GTIDs in the
403 Previous_gtids_log_event of the first binary log that has a
404 Previous_gtids_log_event. This is requested to binary logs but not
405 to relay logs.
406 @param verify_checksum If true, checksums will be checked.
407 @param need_lock If true, LOCK_log, LOCK_index, and
408 global_sid_lock->wrlock are acquired; otherwise they are asserted
409 to be taken already.
410 @param [out] trx_parser This will be used to return the actual
411 relaylog transaction parser state because of the possibility
412 of partial transactions.
413 @param [out] partial_trx If a transaction was left incomplete
414 on the relaylog, its GTID information should be returned to be
415 used in the case of the rest of the transaction be added to the
416 relaylog.
417 @param is_server_starting True if the server is starting.
418 @return false on success, true on error.
419 */
420 bool init_gtid_sets(Gtid_set *gtid_set, Gtid_set *lost_groups,
421 bool verify_checksum, bool need_lock,
422 Transaction_boundary_parser *trx_parser,
423 Gtid_monitoring_info *partial_trx,
424 bool is_server_starting = false);
425
426 void set_previous_gtid_set_relaylog(Gtid_set *previous_gtid_set_param) {
427 assert(is_relay_log);
428 previous_gtid_set_relaylog = previous_gtid_set_param;
429 }
430 /**
431 If the thread owns a GTID, this function generates an empty
432 transaction and releases ownership of the GTID.
433
434 - If the binary log is disabled for this thread, the GTID is
435 inserted directly into the mysql.gtid_executed table and the
436 GTID is included in @@global.gtid_executed. (This only happens
437 for DDL, since DML will save the GTID into table and release
438 ownership inside ha_commit_trans.)
439
440 - If the binary log is enabled for this thread, an empty
441 transaction consisting of GTID, BEGIN, COMMIT is written to the
442 binary log, the GTID is included in @@global.gtid_executed, and
443 the GTID is added to the mysql.gtid_executed table on the next
444 binlog rotation.
445
446 This function must be called by any committing statement (COMMIT,
447 implicitly committing statements, or Xid_log_event), after the
448 statement has completed execution, regardless of whether the
449 statement updated the database.
450
451 This logic ensures that an empty transaction is generated for the
452 following cases:
453
454 - Explicit empty transaction:
455 SET GTID_NEXT = 'UUID:NUMBER'; BEGIN; COMMIT;
456
457 - Transaction or DDL that gets completely filtered out in the
458 slave thread.
459
460 @param thd The committing thread
461
462 @retval 0 Success
463 @retval nonzero Error
464 */
465 int gtid_end_transaction(THD *thd);
466 /**
467 Re-encrypt previous existent binary/relay logs as below.
468 Starting from the next to last entry on the index file, iterating
469 down to the first one:
470 - If the file is encrypted, re-encrypt it. Otherwise, skip it.
471 - If failed to open the file, report an error.
472
473 @retval False Success
474 @retval True Error
475 */
476 bool reencrypt_logs();
477
478 private:
479 std::atomic<enum_log_state> atomic_log_state{LOG_CLOSED};
480
481 /* The previous gtid set in relay log. */
483
484 int open(const char *opt_name) override { return open_binlog(opt_name); }
485
486 /**
487 Enter a stage of the ordered commit procedure.
488
489 Entering is stage is done by:
490
491 - Atomically entering a queue of THD objects (which is just one for
492 the first phase).
493
494 - If the queue was empty, the thread is the leader for that stage
495 and it should process the entire queue for that stage.
496
497 - If the queue was not empty, the thread is a follower and can go
498 waiting for the commit to finish.
499
500 The function will lock the stage mutex if the calling thread was designated
501 leader for the phase.
502
503 @param[in] thd Session structure
504 @param[in] stage The stage to enter
505 @param[in] queue Thread queue for the stage
506 @param[in] leave_mutex Mutex that will be released when changing stage
507 @param[in] enter_mutex Mutex that will be taken when changing stage
508
509 @retval true In case this thread did not become leader, the function
510 returns true *after* the leader has completed the commit
511 on its behalf, so the thread should continue doing the
512 thread-local processing after the commit
513 (i.e. call finish_commit).
514
515 @retval false The thread is the leader for the stage and should do
516 the processing.
517 */
519 mysql_mutex_t *leave_mutex, mysql_mutex_t *enter_mutex);
520 std::pair<int, my_off_t> flush_thread_caches(THD *thd);
521 int flush_cache_to_file(my_off_t *flush_end_pos);
522 int finish_commit(THD *thd);
523 std::pair<bool, bool> sync_binlog_file(bool force);
525 void process_after_commit_stage_queue(THD *thd, THD *first);
526
527 /**
528 Set thread variables used while flushing a transaction.
529
530 @param[in] thd thread whose variables need to be set
531 @param[in] all This is @c true if this is a real transaction commit, and
532 @c false otherwise.
533 @param[in] skip_commit
534 This is @c true if the call to @c ha_commit_low should
535 be skipped (it is handled by the caller somehow) and @c
536 false otherwise (the normal case).
537 */
538 void init_thd_variables(THD *thd, bool all, bool skip_commit);
539
540 /**
541 Fetch and empty BINLOG_FLUSH_STAGE and COMMIT_ORDER_FLUSH_STAGE flush queues
542 and flush transactions to the disk, and unblock threads executing slave
543 preserve commit order.
544
545 @param[in] check_and_skip_flush_logs
546 if false then flush prepared records of transactions to the log
547 of storage engine.
548 if true then flush prepared records of transactions to the log
549 of storage engine only if COMMIT_ORDER_FLUSH_STAGE queue is
550 non-empty.
551
552 @return Pointer to the first session of the BINLOG_FLUSH_STAGE stage queue.
553 */
555 const bool check_and_skip_flush_logs = false);
556
557 /**
558 Execute the flush stage.
559
560 @param[out] total_bytes_var Pointer to variable that will be set to total
561 number of bytes flushed, or NULL.
562
563 @param[out] rotate_var Pointer to variable that will be set to true if
564 binlog rotation should be performed after releasing
565 locks. If rotate is not necessary, the variable will
566 not be touched.
567
568 @param[out] out_queue_var Pointer to the sessions queue in flush stage.
569
570 @return Error code on error, zero on success
571 */
572 int process_flush_stage_queue(my_off_t *total_bytes_var, bool *rotate_var,
573 THD **out_queue_var);
574
575 /**
576 Flush and commit the transaction.
577
578 This will execute an ordered flush and commit of all outstanding
579 transactions and is the main function for the binary log group
580 commit logic. The function performs the ordered commit in four stages.
581
582 Pre-condition: transactions should have called ha_prepare_low, using
583 HA_IGNORE_DURABILITY, before entering here.
584
585 Stage#0 implements replica-preserve-commit-order for applier threads that
586 write the binary log. i.e. it forces threads to enter the queue in the
587 correct commit order.
588
589 The stage#1 flushes the caches to the binary log and under
590 LOCK_log and marks all threads that were flushed as not pending.
591
592 The stage#2 syncs the binary log for all transactions in the group.
593
594 The stage#3 executes under LOCK_commit and commits all transactions in
595 order.
596
597 There are three queues of THD objects: one for each stage.
598 The Commit_order_manager maintains it own queue and its own order for the
599 commit. So Stage#0 doesn't maintain separate StageID.
600
601 When a transaction enters a stage, it adds itself to a queue. If the queue
602 was empty so that this becomes the first transaction in the queue, the
603 thread is the *leader* of the queue. Otherwise it is a *follower*. The
604 leader will do all work for all threads in the queue, and the followers
605 will wait until the last stage is finished.
606
607 Stage 0 (SLAVE COMMIT ORDER):
608 1. If replica-preserve-commit-order and is slave applier worker thread, then
609 waits until its turn to commit i.e. till it is on the top of the queue.
610 2. When it reaches top of the queue, it signals next worker in the commit
611 order queue to awake.
612
613 Stage 1 (FLUSH):
614 1. Sync the engines (ha_flush_logs), since they prepared using non-durable
615 settings (HA_IGNORE_DURABILITY).
616 2. Generate GTIDs for all transactions in the queue.
617 3. Write the session caches for all transactions in the queue to the binary
618 log.
619 4. Increment the counter of prepared XIDs.
620
621 Stage 2 (SYNC):
622 1. If it is time to sync, based on the sync_binlog option, sync the binlog.
623 2. If sync_binlog==1, signal dump threads that they can read up to the
624 position after the last transaction in the queue
625
626 Stage 3 (COMMIT):
627 This is performed by each thread separately, if binlog_order_commits=0.
628 Otherwise by the leader does it for all threads.
629 1. Call the after_sync hook.
630 2. update the max_committed counter in the dependency_tracker
631 3. call ha_commit_low
632 4. Call the after_commit hook
633 5. Update gtids
634 6. Decrement the counter of prepared transactions
635
636 If the binary log needs to be rotated, it is done after this. During
637 rotation, it takes a lock that prevents new commit groups from executing the
638 flush stage, and waits until the counter of prepared transactions becomes 0,
639 before it creates the new file.
640
641 @param[in] thd Session to commit transaction for
642 @param[in] all This is @c true if this is a real transaction commit, and
643 @c false otherwise.
644 @param[in] skip_commit
645 This is @c true if the call to @c ha_commit_low should
646 be skipped and @c false otherwise (the normal case).
647 */
648 int ordered_commit(THD *thd, bool all, bool skip_commit = false);
649 void handle_binlog_flush_or_sync_error(THD *thd, bool need_lock_log,
650 const char *message);
652 class Binlog_event_writer *writer);
654
655 public:
656 int open_binlog(const char *opt_name);
657 void close() override;
658 enum_result commit(THD *thd, bool all) override;
659 int rollback(THD *thd, bool all) override;
660 bool truncate_relaylog_file(Master_info *mi, my_off_t valid_pos);
661 int prepare(THD *thd, bool all) override;
662#if defined(MYSQL_SERVER)
663
666 bool is_transactional);
667
668#endif /* defined(MYSQL_SERVER) */
671 void harvest_bytes_written(Relay_log_info *rli, bool need_log_space_lock);
672 void set_max_size(ulong max_size_arg);
673
674 void update_binlog_end_pos(bool need_lock = true);
675 void update_binlog_end_pos(const char *file, my_off_t pos);
676
677 /**
678 Wait until we get a signal that the binary log has been updated.
679
680 NOTES
681 @param[in] timeout a pointer to a timespec;
682 NULL means to wait w/o timeout.
683 @retval 0 if got signalled on update
684 @retval non-0 if wait timeout elapsed
685 @note
686 LOCK_binlog_end_pos must be owned before calling this function, may be
687 temporarily released while the thread is waiting and is reacquired before
688 returning from the function
689 */
690 int wait_for_update(const std::chrono::nanoseconds &timeout);
691
692 /**
693 Wait until we get a signal that the binary log has been updated.
694 @retval 0 success
695 @note
696 LOCK_binlog_end_pos must be owned before calling this function, may be
697 temporarily released while the thread is waiting and is reacquired before
698 returning from the function
699 */
700 int wait_for_update();
701
702 public:
704 void cleanup();
705 /**
706 Create a new binary log.
707 @param log_name Name of binlog
708 @param new_name Name of binlog, too. todo: what's the difference
709 between new_name and log_name?
710 @param max_size_arg The size at which this binlog will be rotated.
711 @param null_created_arg If false, and a Format_description_log_event
712 is written, then the Format_description_log_event will have the
713 timestamp 0. Otherwise, it the timestamp will be the time when the
714 event was written to the log.
715 @param need_lock_index If true, LOCK_index is acquired; otherwise
716 LOCK_index must be taken by the caller.
717 @param need_sid_lock If true, the read lock on global_sid_lock
718 will be acquired. Otherwise, the caller must hold the read lock
719 on global_sid_lock.
720 @param extra_description_event The master's FDE to be written by the I/O
721 thread while creating a new relay log file. This should be NULL for
722 binary log files.
723 @param new_index_number The binary log file index number to start from
724 after the RESET MASTER TO command is called.
725 */
726 bool open_binlog(const char *log_name, const char *new_name,
727 ulong max_size_arg, bool null_created_arg,
728 bool need_lock_index, bool need_sid_lock,
729 Format_description_log_event *extra_description_event,
730 uint32 new_index_number = 0);
731 bool open_index_file(const char *index_file_name_arg, const char *log_name,
732 bool need_lock_index);
733 /* Use this to start writing a new log file */
734 int new_file(Format_description_log_event *extra_description_event);
735
736 bool write_event(Log_event *event_info);
737 bool write_cache(THD *thd, class binlog_cache_data *cache_data,
738 class Binlog_event_writer *writer);
739 /**
740 Assign automatic generated GTIDs for all commit group threads in the flush
741 stage having gtid_next.type == AUTOMATIC_GTID.
742
743 @param first_seen The first thread seen entering the flush stage.
744 @return Returns false if succeeds, otherwise true is returned.
745 */
747 bool write_transaction(THD *thd, binlog_cache_data *cache_data,
748 Binlog_event_writer *writer);
749
750 /**
751 Write a dml into statement cache and then flush it into binlog. It writes
752 Gtid_log_event and BEGIN, COMMIT automatically.
753
754 It is aimed to handle cases of "background" logging where a statement is
755 logged indirectly, like "TRUNCATE TABLE a_memory_table". So don't use it on
756 any normal statement.
757
758 @param[in] thd the THD object of current thread.
759 @param[in] stmt the DML statement.
760 @param[in] stmt_len the length of the DML statement.
761 @param[in] sql_command the type of SQL command.
762
763 @return Returns false if succeeds, otherwise true is returned.
764 */
765 bool write_stmt_directly(THD *thd, const char *stmt, size_t stmt_len,
766 enum enum_sql_command sql_command);
767
768 void report_cache_write_error(THD *thd, bool is_transactional);
769 bool check_write_error(const THD *thd);
770 bool write_incident(THD *thd, bool need_lock_log, const char *err_msg,
771 bool do_flush_and_sync = true);
772 bool write_incident(Incident_log_event *ev, THD *thd, bool need_lock_log,
773 const char *err_msg, bool do_flush_and_sync = true);
777 void start_union_events(THD *thd, query_id_t query_id_param);
778 void stop_union_events(THD *thd);
779 bool is_query_in_union(THD *thd, query_id_t query_id_param);
780
781 bool write_buffer(const char *buf, uint len, Master_info *mi);
782 bool write_event(Log_event *ev, Master_info *mi);
783
784 /**
785 Logging XA commit/rollback of a prepared transaction.
786
787 It fills in the appropriate event in the statement cache whenever xid
788 state is marked with is_binlogged() flag that indicates the prepared
789 part of the transaction must've been logged.
790
791 About early returns from the function:
792 - ONE_PHASE option to XA-COMMIT is handled to skip writing XA-commit
793 event now.
794 - check is for the read-only XA that is not to be logged.
795
796 @param thd THD handle
797 @return error code, 0 success
798 */
799 int write_xa_to_cache(THD *thd);
800
801 private:
803
804 public:
805 void make_log_name(char *buf, const char *log_ident);
806 bool is_active(const char *log_file_name) const;
807 int remove_logs_from_index(LOG_INFO *linfo, bool need_update_threads);
808 int rotate(bool force_rotate, bool *check_purge);
809
810 /**
811 @brief This function runs automatic purge if the conditions to meet
812 automatic purge are met. Such conditions are: log is open, instance is not
813 locked for backup and automatic purge is enabled.
814
815 If all conditions are met, purge is done according to the configuration
816 of the purge window.
817 */
818 void auto_purge();
819
820 /**
821 @brief This member function is to be called at server startup. It checks if
822 purge can be done and does if it can.
823 */
825 int rotate_and_purge(THD *thd, bool force_rotate);
826
827 bool flush();
828 /**
829 Flush binlog cache and synchronize to disk.
830
831 This function flushes events in binlog cache to binary log file,
832 it will do synchronizing according to the setting of system
833 variable 'sync_binlog'. If file is synchronized, @c synced will
834 be set to 1, otherwise 0.
835
836 @param[in] force if true, ignores the 'sync_binlog' and synchronizes the
837 file.
838
839 @retval 0 Success
840 @retval other Failure
841 */
842 bool flush_and_sync(const bool force = false);
843 int purge_logs(const char *to_log, bool included, bool need_lock_index,
844 bool need_update_threads, ulonglong *decrease_log_space,
845 bool auto_purge);
846 int purge_logs_before_date(time_t purge_time, bool auto_purge);
847 int set_crash_safe_index_file_name(const char *base_file_name);
850 int add_log_to_index(uchar *log_file_name, size_t name_len,
851 bool need_lock_index);
852 int move_crash_safe_index_file_to_index_file(bool need_lock_index);
853 int set_purge_index_file_name(const char *base_file_name);
858 int register_purge_index_entry(const char *entry);
859 int register_create_index_entry(const char *entry);
860 int purge_index_entry(THD *thd, ulonglong *decrease_log_space,
861 bool need_lock_index);
862 bool reset_logs(THD *thd, bool delete_only = false);
863 void close(uint exiting, bool need_lock_log, bool need_lock_index);
864
865 // iterating through the log index file
866 int find_log_pos(LOG_INFO *linfo, const char *log_name, bool need_lock_index);
867 int find_next_log(LOG_INFO *linfo, bool need_lock_index);
868 int find_next_relay_log(char log_name[FN_REFLEN + 1]);
869 int get_current_log(LOG_INFO *linfo, bool need_lock_log = true);
870 int raw_get_current_log(LOG_INFO *linfo);
872 /**
873 Retrieves the contents of the index file associated with this log object
874 into an `std::list<std::string>` object. The order held by the index file is
875 kept.
876
877 @param need_lock_index whether or not the lock over the index file should be
878 acquired inside the function.
879
880 @return a pair: a function status code; a list of `std::string` objects with
881 the content of the log index file.
882 */
883 std::pair<int, std::list<std::string>> get_log_index(
884 bool need_lock_index = true);
885 inline char *get_index_fname() { return index_file_name; }
886 inline char *get_log_fname() { return log_file_name; }
887 const char *get_name() const { return name; }
888 inline mysql_mutex_t *get_log_lock() { return &LOCK_log; }
890 inline mysql_cond_t *get_log_cond() { return &update_cond; }
892
895 inline IO_CACHE *get_index_file() { return &index_file; }
896
897 /**
898 Function to report the missing GTIDs.
899
900 This function logs the missing transactions on master to its error log
901 as a warning. If the missing GTIDs are too long to print in a message,
902 it suggests the steps to extract the missing transactions.
903
904 This function also informs slave about the GTID set sent by the slave,
905 transactions missing on the master and few suggestions to recover from
906 the error. This message shall be wrapped by
907 ER_MASTER_FATAL_ERROR_READING_BINLOG on slave and will be logged as an
908 error.
909
910 This function will be called from mysql_binlog_send() function.
911
912 @param slave_executed_gtid_set GTID set executed by slave
913 @param errmsg Pointer to the error message
914 */
915 void report_missing_purged_gtids(const Gtid_set *slave_executed_gtid_set,
916 std::string &errmsg);
917
918 /**
919 Function to report the missing GTIDs.
920
921 This function logs the missing transactions on master to its error log
922 as a warning. If the missing GTIDs are too long to print in a message,
923 it suggests the steps to extract the missing transactions.
924
925 This function also informs slave about the GTID set sent by the slave,
926 transactions missing on the master and few suggestions to recover from
927 the error. This message shall be wrapped by
928 ER_MASTER_FATAL_ERROR_READING_BINLOG on slave and will be logged as an
929 error.
930
931 This function will be called from find_first_log_not_in_gtid_set()
932 function.
933
934 @param previous_gtid_set Previous GTID set found
935 @param slave_executed_gtid_set GTID set executed by slave
936 @param errmsg Pointer to the error message
937 */
938 void report_missing_gtids(const Gtid_set *previous_gtid_set,
939 const Gtid_set *slave_executed_gtid_set,
940 std::string &errmsg);
942 /*
943 It is called by the threads (e.g. dump thread, applier thread) which want
944 to read hot log without LOCK_log protection.
945 */
949 }
953
954 /**
955 Deep copy global_sid_map and gtid_executed.
956 Both operations are done under LOCK_commit and global_sid_lock
957 protection.
958
959 @param[out] sid_map The Sid_map to which global_sid_map will
960 be copied.
961 @param[out] gtid_set The Gtid_set to which gtid_executed will
962 be copied.
963
964 @return the operation status
965 @retval 0 OK
966 @retval !=0 Error
967 */
968 int get_gtid_executed(Sid_map *sid_map, Gtid_set *gtid_set);
969
970 /*
971 True while rotating binlog, which is caused by logging Incident_log_event.
972 */
974};
975
980};
981
983
984/**
985 Check if the the transaction is empty.
986
987 @param thd The client thread that executed the current statement.
988
989 @retval true No changes found in any storage engine
990 @retval false Otherwise.
991
992**/
993bool is_transaction_empty(THD *thd);
994/**
995 Check if the transaction has no rw flag set for any of the storage engines.
996
997 @param thd The client thread that executed the current statement.
998 @param trx_scope The transaction scope to look into.
999
1000 @retval the number of engines which have actual changes.
1001 */
1003
1004/**
1005 Check if at least one of transacaction and statement binlog caches contains
1006 an empty transaction, other one is empty or contains an empty transaction,
1007 which has two binlog events "BEGIN" and "COMMIT".
1008
1009 @param thd The client thread that executed the current statement.
1010
1011 @retval true At least one of transacaction and statement binlog caches
1012 contains an empty transaction, other one is empty or
1013 contains an empty transaction.
1014 @retval false Otherwise.
1015*/
1017bool trans_has_updated_trans_table(const THD *thd);
1019bool ending_trans(THD *thd, const bool all);
1020bool ending_single_stmt_trans(THD *thd, const bool all);
1021bool trans_cannot_safely_rollback(const THD *thd);
1022bool stmt_cannot_safely_rollback(const THD *thd);
1023
1025
1026/**
1027 @brief Purges the binary log files up to the file name passed as
1028 a paramenter. Purge will not delete the file passed as
1029 an argument.
1030
1031 @param thd The session context.
1032 @param to_log Up to which log file to purge.
1033 @return true if there was an error.
1034 @return false if there was no error.
1035 */
1036bool purge_source_logs_to_file(THD *thd, const char *to_log);
1037
1038bool purge_source_logs_before_date(THD *thd, time_t purge_time);
1040bool mysql_show_binlog_events(THD *thd);
1041void check_binlog_cache_size(THD *thd);
1043bool binlog_enabled();
1044void register_binlog_handler(THD *thd, bool trx);
1045int query_error_code(const THD *thd, bool not_killed);
1046
1047extern const char *log_bin_index;
1048extern const char *log_bin_basename;
1049extern bool opt_binlog_order_commits;
1050extern ulong rpl_read_size;
1051/**
1052 Turns a relative log binary log path into a full path, based on the
1053 opt_bin_logname or opt_relay_logname. Also trims the cr-lf at the
1054 end of the full_path before return to avoid any server startup
1055 problem on windows.
1056
1057 @param from The log name we want to make into an absolute path.
1058 @param to The buffer where to put the results of the
1059 normalization.
1060 @param is_relay_log Switch that makes is used inside to choose which
1061 option (opt_bin_logname or opt_relay_logname) to
1062 use when calculating the base path.
1063
1064 @returns true if a problem occurs, false otherwise.
1065 */
1066
1067bool normalize_binlog_name(char *to, const char *from, bool is_relay_log);
1068
1069#endif /* BINLOG_H_INCLUDED */
int64 query_id_t
Definition: binlog.h:70
MYSQL_PLUGIN_IMPORT MYSQL_BIN_LOG mysql_bin_log
Contains the classes representing events occurring in the replication stream.
Byte container that provides a storage for serializing session binlog events.
Definition: binlog_ostream.h:172
Auxiliary class to copy serialized events to the binary log and correct some of the fields that are n...
Definition: binlog.cc:1362
StageID
Constants for queues for different stages.
Definition: rpl_commit_stage_manager.h:165
For binlog version 4.
Definition: log_event.h:1613
Stores information to monitor a transaction during the different replication stages.
Definition: rpl_gtid.h:1310
Represents a set of GTIDs.
Definition: rpl_gtid.h:1454
Container to hold and allow iteration over a set of Ha_trx_info objects.
Definition: transaction_info.h:501
Either statement transaction or normal transaction - related thread-specific storage engine data.
Definition: transaction_info.h:401
Class representing an incident, an occurrence out of the ordinary, that happened on the master.
Definition: log_event.h:3518
This is the abstract base class for binary log events.
Definition: log_event.h:659
Logical binlog file which wraps and hides the detail of lower layer storage implementation.
Definition: binlog.cc:376
Definition: binlog.h:139
mysql_mutex_t * get_binlog_end_pos_lock()
Definition: binlog.h:950
const char * get_name() const
Definition: binlog.h:887
mysql_cond_t m_prep_xids_cond
Definition: binlog.h:241
mysql_mutex_t * get_commit_lock()
Definition: binlog.h:889
mysql_mutex_t LOCK_binlog_end_pos
Definition: binlog.h:197
std::atomic< my_off_t > atomic_binlog_end_pos
Definition: binlog.h:201
void unlock_binlog_end_pos()
Definition: binlog.h:952
PSI_mutex_key m_key_LOCK_xids
The instrumentation key to use for @ LOCK_xids.
Definition: binlog.h:179
mysql_mutex_t LOCK_commit
Definition: binlog.h:195
char db[NAME_LEN+1]
Definition: binlog.h:150
void set_previous_gtid_set_relaylog(Gtid_set *previous_gtid_set_param)
Definition: binlog.h:426
IO_CACHE crash_safe_index_file
Definition: binlog.h:209
void reset_bytes_written()
Definition: binlog.h:670
void lock_binlog_end_pos()
Definition: binlog.h:951
enum_log_state
Definition: binlog.h:144
@ LOG_OPENED
Definition: binlog.h:144
@ LOG_CLOSED
Definition: binlog.h:144
@ LOG_TO_BE_OPENED
Definition: binlog.h:144
mysql_mutex_t LOCK_index
Definition: binlog.h:194
PSI_mutex_key m_key_COND_done
The PFS instrumentation key for @ COND_done.
Definition: binlog.h:171
mysql_mutex_t LOCK_sync
Definition: binlog.h:196
PSI_mutex_key m_key_LOCK_commit_queue
The PFS instrumentation key for @ LOCK_commit_queue.
Definition: binlog.h:163
bool write_event_to_binlog_and_flush(Log_event *ev)
void set_psi_keys(PSI_mutex_key key_LOCK_index, PSI_mutex_key key_LOCK_commit, PSI_mutex_key key_LOCK_commit_queue, PSI_mutex_key key_LOCK_done, PSI_mutex_key key_LOCK_flush_queue, PSI_mutex_key key_LOCK_log, PSI_mutex_key key_LOCK_binlog_end_pos, PSI_mutex_key key_LOCK_sync, PSI_mutex_key key_LOCK_sync_queue, PSI_mutex_key key_LOCK_xids, PSI_cond_key key_COND_done, PSI_cond_key key_COND_flush_queue, PSI_cond_key key_update_cond, PSI_cond_key key_prep_xids_cond, PSI_file_key key_file_log, PSI_file_key key_file_log_index, PSI_file_key key_file_log_cache, PSI_file_key key_file_log_index_cache)
Definition: binlog.h:333
Binlog_ofile * get_binlog_file()
Definition: binlog.h:891
int open(const char *opt_name) override
Initialize and open the coordinator log.
Definition: binlog.h:484
mysql_mutex_t * get_log_lock()
Definition: binlog.h:888
bool is_open() const
Definition: binlog.h:289
IO_CACHE purge_index_file
Definition: binlog.h:217
PSI_cond_key m_key_prep_xids_cond
The instrumentation key to use for @ prep_xids_cond.
Definition: binlog.h:183
my_off_t get_binlog_end_pos() const
Definition: binlog.h:946
void lock_index()
Definition: binlog.h:893
PSI_mutex_key m_key_LOCK_flush_queue
The PFS instrumentation key for @ LOCK_flush_queue.
Definition: binlog.h:167
int32 get_prep_xids()
Definition: binlog.h:256
std::atomic< enum_log_state > atomic_log_state
Definition: binlog.h:479
Gtid_set * previous_gtid_set_relaylog
Definition: binlog.h:482
PSI_cond_key m_key_update_cond
The instrumentation key to use for @ update_cond.
Definition: binlog.h:181
char * get_index_fname()
Definition: binlog.h:885
bool write_error
Definition: binlog.h:151
uint * sync_period_ptr
Definition: binlog.h:238
PSI_mutex_key m_key_LOCK_done
The PFS instrumentation key for @ LOCK_done.
Definition: binlog.h:165
std::atomic< int32 > m_atomic_prep_xids
Definition: binlog.h:242
Binlog_ofile * m_binlog_file
Definition: binlog.h:152
PSI_mutex_key m_key_LOCK_sync
The instrumentation key to use for @ LOCK_sync.
Definition: binlog.h:177
void add_bytes_written(ulonglong inc)
Definition: binlog.h:669
bool inited
Definition: binlog.h:151
PSI_file_key m_key_file_log_index_cache
The instrumentation key to use for opening a log index cache file.
Definition: binlog.h:191
PSI_mutex_key m_key_LOCK_binlog_end_pos
The instrumentation key to use for @ LOCK_binlog_end_pos.
Definition: binlog.h:161
char index_file_name[FN_REFLEN]
Definition: binlog.h:204
IO_CACHE * get_index_file()
Definition: binlog.h:895
mysql_cond_t * get_log_cond()
Definition: binlog.h:890
mysql_mutex_t LOCK_log
Definition: binlog.h:147
ulong max_size
Definition: binlog.h:229
bool is_relay_log
Definition: binlog.h:292
PSI_mutex_key m_key_LOCK_index
The instrumentation key to use for @ LOCK_index.
Definition: binlog.h:159
uint get_sync_period()
Definition: binlog.h:258
PSI_mutex_key m_key_LOCK_log
The instrumentation key to use for @ LOCK_log.
Definition: binlog.h:157
PSI_mutex_key m_key_COND_flush_queue
The PFS instrumentation key for @ COND_flush_queue.
Definition: binlog.h:173
uint file_id
Definition: binlog.h:232
ulonglong bytes_written
Definition: binlog.h:202
binary_log::enum_binlog_checksum_alg relay_log_checksum_alg
Definition: binlog.h:328
mysql_cond_t update_cond
Definition: binlog.h:199
PSI_mutex_key m_key_LOCK_commit
The instrumentation key to use for @ LOCK_commit.
Definition: binlog.h:175
void unlock_index()
Definition: binlog.h:894
PSI_file_key m_key_file_log
The instrumentation key to use for opening the log file.
Definition: binlog.h:185
PSI_mutex_key m_key_LOCK_sync_queue
The PFS instrumentation key for @ LOCK_sync_queue.
Definition: binlog.h:169
char * get_log_fname()
Definition: binlog.h:886
char purge_index_file_name[FN_REFLEN]
Definition: binlog.h:218
Transaction_dependency_tracker m_dependency_tracker
Manage the MTS dependency tracking.
Definition: binlog.h:367
IO_CACHE index_file
Definition: binlog.h:203
mysql_mutex_t LOCK_xids
Definition: binlog.h:198
PSI_file_key m_key_file_log_cache
The instrumentation key to use for opening a log cache file.
Definition: binlog.h:189
uint sync_counter
Definition: binlog.h:239
PSI_file_key m_log_file_key
Instrumentation key to use for file io in log_file.
Definition: binlog.h:155
bool is_rotating_caused_by_incident
Definition: binlog.h:973
char * name
Definition: binlog.h:148
char log_file_name[FN_REFLEN]
Definition: binlog.h:149
uint8 checksum_alg_reset
Definition: binlog.h:294
char crash_safe_index_file_name[FN_REFLEN]
Definition: binlog.h:210
static const int MAX_RETRIES_FOR_DELETE_RENAME_FAILURE
Definition: binlog.h:941
PSI_file_key m_key_file_log_index
The instrumentation key to use for opening the log index file.
Definition: binlog.h:187
Definition: rpl_mi.h:86
Definition: rpl_rli.h:201
Common base class for all row-containing log events.
Definition: log_event.h:2714
Represents a bidirectional map between SID and SIDNO.
Definition: rpl_gtid.h:723
Transaction Coordinator Log.
Definition: tc_log.h:143
enum_result
Definition: tc_log.h:159
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_class.h:922
This is the base class for verifying transaction boundaries.
Definition: trx_boundary_parser.h:47
enum_trx_scope
Definition: transaction_info.h:54
Dependency tracker is a container singleton that dispatches between the three methods associated with...
Definition: rpl_trx_tracking.h:216
Caches for non-transactional and transactional data before writing it to the binary log.
Definition: binlog.cc:697
Definition: item_func.h:3038
#define mysql_mutex_lock(M)
Definition: mysql_mutex.h:49
#define mysql_mutex_unlock(M)
Definition: mysql_mutex.h:56
char * pos
Definition: do_ctype.cc:76
void harvest_bytes_written(Relay_log_info *rli, bool need_log_space_lock)
Definition: binlog.cc:7734
bool mysql_show_binlog_events(THD *thd)
Execute a SHOW BINLOG EVENTS statement.
Definition: binlog.cc:3476
bool stmt_cannot_safely_rollback(const THD *thd)
This function checks if current statement cannot be rollded back safely.
Definition: binlog.cc:3122
bool normalize_binlog_name(char *to, const char *from, bool is_relay_log)
Turns a relative log binary log path into a full path, based on the opt_bin_logname or opt_relay_logn...
Definition: binlog.cc:231
int write_xa_to_cache(THD *thd)
Logging XA commit/rollback of a prepared transaction.
Definition: binlog.cc:2345
std::pair< int, std::list< std::string > > get_log_index(bool need_lock_index=true)
Retrieves the contents of the index file associated with this log object into an std::list<std::strin...
Definition: binlog.cc:5556
int close_purge_index_file()
Definition: binlog.cc:6072
void set_max_size(ulong max_size_arg)
Definition: binlog.cc:7753
ulong rpl_read_size
Definition: binlog.cc:173
int flush_cache_to_file(my_off_t *flush_end_pos)
Flush the I/O cache to file.
Definition: binlog.cc:8588
void report_cache_write_error(THD *thd, bool is_transactional)
Definition: binlog.cc:5352
bool is_transaction_empty(THD *thd)
Check if the the transaction is empty.
Definition: binlog.cc:3013
int log_loaded_block(IO_CACHE *file)
Load data's io cache specific hook to be executed before a chunk of data is being read into the cache...
Definition: binlog.cc:3273
bool trans_cannot_safely_rollback(const THD *thd)
This function checks if a transaction cannot be rolled back safely.
Definition: binlog.cc:3109
THD * fetch_and_process_flush_stage_queue(const bool check_and_skip_flush_logs=false)
Fetch and empty BINLOG_FLUSH_STAGE and COMMIT_ORDER_FLUSH_STAGE flush queues and flush transactions t...
Definition: binlog.cc:8354
int rotate(bool force_rotate, bool *check_purge)
The method executes rotation when LOCK_log is already acquired by the caller.
Definition: binlog.cc:7129
void update_thd_next_event_pos(THD *thd)
Definition: binlog.cc:6903
int find_log_pos(LOG_INFO *linfo, const char *log_name, bool need_lock_index)
Find the position in the log-index-file for the given log name.
Definition: binlog.cc:5401
bool trans_has_updated_trans_table(const THD *thd)
This function checks if a transactional table was updated by the current transaction.
Definition: binlog.cc:3051
void close() override
This is called on shutdown, after ha_panic.
Definition: binlog.cc:7966
int new_file_without_locking(Format_description_log_event *extra_description_event)
Definition: binlog.cc:6464
void report_missing_purged_gtids(const Gtid_set *slave_executed_gtid_set, std::string &errmsg)
Function to report the missing GTIDs.
Definition: binlog.cc:9078
uint next_file_id()
Definition: binlog.cc:7236
void cleanup()
Definition: binlog.cc:3525
int process_flush_stage_queue(my_off_t *total_bytes_var, bool *rotate_var, THD **out_queue_var)
Execute the flush stage.
Definition: binlog.cc:8396
bool do_write_cache(Binlog_cache_storage *cache, class Binlog_event_writer *writer)
Write the contents of the given IO_CACHE to the binary log.
Definition: binlog.cc:7284
int rollback(THD *thd, bool all) override
Write a rollback record of the transaction to the binary log.
Definition: binlog.cc:2494
void init_pthread_objects()
Definition: binlog.cc:3548
bool reencrypt_logs()
Re-encrypt previous existent binary/relay logs as below.
Definition: binlog.cc:1881
const char * log_bin_index
Definition: binlog.cc:169
int open_binlog(const char *opt_name)
Definition: binlog.cc:7777
~MYSQL_BIN_LOG() override
Definition: binlog.cc:3521
bool binlog_enabled()
Check whether binlog_hton has valid slot and enabled.
Definition: binlog.cc:1314
bool is_empty_transaction_in_binlog_cache(const THD *thd)
Check if at least one of transacaction and statement binlog caches contains an empty transaction,...
Definition: binlog.cc:3032
int register_purge_index_entry(const char *entry)
Definition: binlog.cc:6103
int sync_purge_index_file()
Definition: binlog.cc:6092
int gtid_end_transaction(THD *thd)
If the thread owns a GTID, this function generates an empty transaction and releases ownership of the...
Definition: binlog.cc:1760
int set_purge_index_file_name(const char *base_file_name)
Definition: binlog.cc:6037
void process_commit_stage_queue(THD *thd, THD *queue)
Commit a sequence of sessions.
Definition: binlog.cc:8453
void register_binlog_handler(THD *thd, bool trx)
Definition: binlog.cc:9294
bool open(PSI_file_key log_file_key, const char *log_name, const char *new_name, uint32 new_index_number)
Open the logfile and init IO_CACHE.
Definition: binlog.cc:3772
bool write_buffer(const char *buf, uint len, Master_info *mi)
Definition: binlog.cc:6844
int open_purge_index_file(bool destroy)
Definition: binlog.cc:6049
int set_crash_safe_index_file_name(const char *base_file_name)
Set the name of crash safe index file.
Definition: binlog.cc:5765
const char * log_bin_basename
Definition: binlog.cc:170
int purge_logs(const char *to_log, bool included, bool need_lock_index, bool need_update_threads, ulonglong *decrease_log_space, bool auto_purge)
Remove all logs before the given log from disk and from the index file.
Definition: binlog.cc:5918
bool write_transaction(THD *thd, binlog_cache_data *cache_data, Binlog_event_writer *writer)
Write the Gtid_log_event to the binary log (prior to writing the statement or transaction cache).
Definition: binlog.cc:1604
bool truncate_relaylog_file(Master_info *mi, my_off_t valid_pos)
Truncate the active relay log file in the specified position.
Definition: binlog.cc:7927
void check_binlog_cache_size(THD *thd)
Checks if the BINLOG_CACHE_SIZE's value is greater than MAX_BINLOG_CACHE_SIZE.
Definition: binlog.cc:1275
bool write_event_to_binlog_and_sync(Log_event *ev)
Definition: binlog.cc:7520
bool is_active(const char *log_file_name) const
Check if we are writing/reading to the given log file.
Definition: binlog.cc:6416
void check_binlog_stmt_cache_size(THD *thd)
Checks if the BINLOG_STMT_CACHE_SIZE's value is greater than MAX_BINLOG_STMT_CACHE_SIZE.
Definition: binlog.cc:1295
std::pair< bool, bool > sync_binlog_file(bool force)
Call fsync() to sync the file to disk.
Definition: binlog.cc:8601
int find_next_relay_log(char log_name[FN_REFLEN+1])
Find the relay log name following the given name from relay log index file.
Definition: binlog.cc:5535
int generate_new_name(char *new_name, const char *log_name, uint32 new_index_number=0)
Definition: binlog.cc:3707
int flush_and_set_pending_rows_event(THD *thd, Rows_log_event *event, bool is_transactional)
Definition: binlog.cc:6919
int finish_commit(THD *thd)
Helper function executed when leaving ordered_commit.
Definition: binlog.cc:8643
bool write_stmt_directly(THD *thd, const char *stmt, size_t stmt_len, enum enum_sql_command sql_command)
Write a dml into statement cache and then flush it into binlog.
Definition: binlog.cc:7446
bool ending_single_stmt_trans(THD *thd, const bool all)
This function checks if a single statement transaction is about to commit or not.
Definition: binlog.cc:3098
int raw_get_current_log(LOG_INFO *linfo)
Definition: binlog.cc:5325
int remove_logs_from_index(LOG_INFO *linfo, bool need_update_threads)
Remove logs from index file.
Definition: binlog.cc:5856
enum_result commit(THD *thd, bool all) override
Commit the transaction in the transaction coordinator.
Definition: binlog.cc:8031
bool check_write_error(const THD *thd)
Definition: binlog.cc:5333
bool purge_source_logs_to_file(THD *thd, const char *to_log)
Purges the binary log files up to the file name passed as a paramenter.
Definition: binlog.cc:3137
int get_gtid_executed(Sid_map *sid_map, Gtid_set *gtid_set)
Deep copy global_sid_map and gtid_executed.
Definition: binlog.cc:7244
int find_next_log(LOG_INFO *linfo, bool need_lock_index)
Find the position in the log-index-file for the given log name.
Definition: binlog.cc:5489
int wait_for_update()
Wait until we get a signal that the binary log has been updated.
Definition: binlog.cc:7618
void make_log_name(char *buf, const char *log_ident)
Create a new log file name.
Definition: binlog.cc:6405
bool change_stage(THD *thd, Commit_stage_manager::StageID stage, THD *queue, mysql_mutex_t *leave_mutex, mysql_mutex_t *enter_mutex)
Enter a stage of the ordered commit procedure.
Definition: binlog.cc:8557
bool find_first_log(std::string &binlog_file_name, std::string &errmsg)
Find the oldest binary log referenced by the index file.
Definition: binlog.cc:4415
bool write_cache(THD *thd, class binlog_cache_data *cache_data, class Binlog_event_writer *writer)
Write the contents of the statement or transaction cache to the binary log.
Definition: binlog.cc:7558
bool write_event(Log_event *event_info)
Write an event to the binary log cache.
Definition: binlog.cc:6962
void update_binlog_end_pos(bool need_lock=true)
Definition: binlog.cc:9209
int rotate_and_purge(THD *thd, bool force_rotate)
Execute a FLUSH LOGS statement.
Definition: binlog.cc:7204
int get_current_log(LOG_INFO *linfo, bool need_lock_log=true)
Definition: binlog.cc:5317
bool is_query_in_union(THD *thd, query_id_t query_id_param)
Definition: binlog.cc:6894
int new_file_impl(bool need_lock, Format_description_log_event *extra_description_event)
Start writing to a new log file or reopen the old file.
Definition: binlog.cc:6484
bool write_event_to_binlog(Log_event *ev)
Definition: binlog.cc:7499
bool reset_logs(THD *thd, bool delete_only=false)
Removes files, as part of a RESET MASTER or RESET SLAVE statement, by deleting all logs referred to i...
Definition: binlog.cc:5599
bool purge_source_logs_before_date(THD *thd, time_t purge_time)
Execute a PURGE BINARY LOGS BEFORE <date> command.
Definition: binlog.cc:3165
bool stmt_has_updated_trans_table(Ha_trx_info_list const &ha_list)
This function checks if a transactional table was updated by the current statement.
Definition: binlog.cc:3065
bool ending_trans(THD *thd, const bool all)
This function checks if a transaction, either a multi-statement or a single statement transaction is ...
Definition: binlog.cc:3083
int query_error_code(const THD *thd, bool not_killed)
Definition: binlog.cc:3205
void process_after_commit_stage_queue(THD *thd, THD *first)
Process after commit for a sequence of sessions.
Definition: binlog.cc:8526
std::pair< int, my_off_t > flush_thread_caches(THD *thd)
Flush caches for session.
Definition: binlog.cc:8302
int move_crash_safe_index_file_to_index_file(bool need_lock_index)
Move crash safe index file to index file.
Definition: binlog.cc:5116
void report_missing_gtids(const Gtid_set *previous_gtid_set, const Gtid_set *slave_executed_gtid_set, std::string &errmsg)
Function to report the missing GTIDs.
Definition: binlog.cc:9142
int purge_index_entry(THD *thd, ulonglong *decrease_log_space, bool need_lock_index)
Definition: binlog.cc:6120
bool init_and_set_log_file_name(const char *log_name, const char *new_name, uint32 new_index_number)
Definition: binlog.cc:3747
const char * generate_name(const char *log_name, const char *suffix, char *buff)
Definition: binlog.cc:3728
int purge_logs_before_date(time_t purge_time, bool auto_purge)
Remove all logs before the given file date from disk and from the index file.
Definition: binlog.cc:6289
bool opt_binlog_order_commits
Definition: binlog.cc:167
void init_thd_variables(THD *thd, bool all, bool skip_commit)
Set thread variables used while flushing a transaction.
Definition: binlog.cc:8319
int open_crash_safe_index_file()
Open a (new) crash safe index file.
Definition: binlog.cc:5789
void start_union_events(THD *thd, query_id_t query_id_param)
Definition: binlog.cc:6881
bool is_inited_purge_index_file()
Definition: binlog.cc:6087
bool open_index_file(const char *index_file_name_arg, const char *log_name, bool need_lock_index)
Definition: binlog.cc:3825
bool write_incident(THD *thd, bool need_lock_log, const char *err_msg, bool do_flush_and_sync=true)
Creates an incident event and writes it to the binary log.
Definition: binlog.cc:7478
bool assign_automatic_gtids_to_flush_group(THD *first_seen)
Assign automatic generated GTIDs for all commit group threads in the flush stage having gtid_next....
Definition: binlog.cc:1549
int register_create_index_entry(const char *entry)
Definition: binlog.cc:6115
int close_crash_safe_index_file()
Close the crash safe index file.
Definition: binlog.cc:5821
void auto_purge()
This function runs automatic purge if the conditions to meet automatic purge are met.
Definition: binlog.cc:7159
int prepare(THD *thd, bool all) override
Log a prepare record of the transaction to the storage engines.
Definition: binlog.cc:7978
void handle_binlog_flush_or_sync_error(THD *thd, bool need_lock_log, const char *message)
Helper function to handle flush or sync stage errors.
Definition: binlog.cc:8747
int ordered_commit(THD *thd, bool all, bool skip_commit=false)
Flush and commit the transaction.
Definition: binlog.cc:8796
int add_log_to_index(uchar *log_file_name, size_t name_len, bool need_lock_index)
Append log file name to index file.
Definition: binlog.cc:5274
bool init_gtid_sets(Gtid_set *gtid_set, Gtid_set *lost_groups, bool verify_checksum, bool need_lock, Transaction_boundary_parser *trx_parser, Gtid_monitoring_info *partial_trx, bool is_server_starting=false)
Reads the set of all GTIDs in the binary/relay log, and the set of all lost GTIDs in the binary log,...
Definition: binlog.cc:4528
MYSQL_BIN_LOG(uint *sync_period, bool relay_log=false)
Definition: binlog.cc:3497
bool flush_and_sync(const bool force=false)
Flush binlog cache and synchronize to disk.
Definition: binlog.cc:6871
int new_file(Format_description_log_event *extra_description_event)
Definition: binlog.cc:6455
bool show_binlog_events(THD *thd, MYSQL_BIN_LOG *binary_log)
Definition: binlog.cc:3308
void inc_prep_xids(THD *thd)
Increment the prepared XID counter.
Definition: binlog.cc:6420
void dec_prep_xids(THD *thd)
Decrement the prepared XID counter.
Definition: binlog.cc:6431
void stop_union_events(THD *thd)
Definition: binlog.cc:6889
bool flush()
Definition: binlog.cc:6867
void signal_update()
Notifies waiting threads that binary log has been updated.
Definition: binlog.cc:9201
int check_trx_rw_engines(THD *thd, Transaction_ctx::enum_trx_scope trx_scope)
Check if the transaction has no rw flag set for any of the storage engines.
Definition: binlog.cc:3020
bool find_first_log_not_in_gtid_set(char *binlog_file_name, const Gtid_set *gtid_set, Gtid *first_gtid, std::string &errmsg)
Find the oldest binary log that contains any GTID that is not in the given gtid set.
Definition: binlog.cc:4430
void report_binlog_write_error()
Definition: binlog.cc:7610
bool after_write_to_relay_log(Master_info *mi)
Called after an event has been written to the relay log by the IO thread.
Definition: binlog.cc:6723
void auto_purge_at_server_startup()
This member function is to be called at server startup.
Definition: binlog.cc:7147
unsigned int PSI_cond_key
Instrumented cond key.
Definition: psi_cond_bits.h:43
unsigned int PSI_file_key
Instrumented file key.
Definition: psi_file_bits.h:47
unsigned int PSI_mutex_key
Instrumented mutex key.
Definition: psi_mutex_bits.h:51
#define mysql_mutex_assert_not_owner(M)
Wrapper, to use safe_mutex_assert_not_owner with instrumented mutexes.
Definition: mysql_mutex.h:125
Some integer typedefs for easier portability.
unsigned long long int ulonglong
Definition: my_inttypes.h:55
uint8_t uint8
Definition: my_inttypes.h:62
ulonglong my_off_t
Definition: my_inttypes.h:71
unsigned char uchar
Definition: my_inttypes.h:51
int64_t int64
Definition: my_inttypes.h:67
int32_t int32
Definition: my_inttypes.h:65
uint32_t uint32
Definition: my_inttypes.h:66
Common #defines and includes for file and socket I/O.
#define FN_REFLEN
Definition: my_io.h:82
Functions related to handling of plugins and other dynamically loaded libraries.
#define MYSQL_PLUGIN_IMPORT
Definition: my_sharedlib.h:70
enum_sql_command
Definition: my_sqlcommand.h:45
Common header for many mysys elements.
static int not_killed
Definition: myisamchk.cc:1615
static QUEUE queue
Definition: myisampack.cc:206
Common definition between mysql server & client.
#define NAME_LEN
Definition: mysql_com.h:66
Instrumentation helpers for conditions.
ABI for instrumented mutexes.
Type inc(Shards< COUNT > &shards, size_t id)
Increment the counter of a shard by 1.
Definition: ut0counter.h:292
The namespace contains classes representing events that can occur in a replication stream.
enum_binlog_checksum_alg
Enumeration spcifying checksum algorithm used to encode a binary log event.
Definition: binlog_event.h:420
Definition: buf0block_hint.cc:29
Definition: os0file.h:85
static bool timeout(bool(*wait_condition)())
Timeout function.
Definition: log0meb.cc:495
static mysql_service_status_t destroy(reference_caching_channel channel) noexcept
Definition: component.cc:49
Instrumentation helpers for conditions.
Instrumentation helpers for mutexes.
Performance schema instrumentation interface.
Performance schema instrumentation interface.
Instrumentation helpers for mutexes.
required string event
Definition: replication_group_member_actions.proto:31
Definition: binlog.h:87
Item_result type
Definition: binlog.h:91
ulong length
Definition: binlog.h:90
char * value
Definition: binlog.h:89
bool unsigned_flag
Definition: binlog.h:93
user_var_entry * user_var_event
Definition: binlog.h:88
uint charset_number
Definition: binlog.h:92
TODO: Move this structure to libbinlogevents/include/control_events.h when we start using C++11.
Definition: rpl_gtid.h:1065
Definition: my_sys.h:340
Definition: binlog.h:976
bool log_delayed
Definition: binlog.h:979
my_off_t last_pos_in_file
Definition: binlog.h:978
bool logged_data_file
Definition: binlog.h:979
THD * thd
Definition: binlog.h:977
Definition: binlog.h:117
my_off_t pos
Definition: binlog.h:120
my_off_t index_file_start_offset
Definition: binlog.h:119
LOG_INFO()
Definition: binlog.h:124
bool fatal
Definition: binlog.h:121
char log_file_name[FN_REFLEN]
Definition: binlog.h:118
my_off_t index_file_offset
Definition: binlog.h:119
int entry_index
Definition: binlog.h:122
int encrypted_header_size
Definition: binlog.h:123
Definition: completion_hash.h:34
An instrumented cond structure.
Definition: mysql_cond_bits.h:49
An instrumented mutex structure.
Definition: mysql_mutex_bits.h:49
MySQL mutex implementation.
Include file for Sun RPC to compile out of the box.
unsigned int uint
Definition: uca-dump.cc:29
Item_result
Type of the user defined function return slot and arguments.
Definition: udf_registration_types.h:38
static int all(site_def const *s, node_no node)
Definition: xcom_transport.cc:868