MySQL 8.0.29
Source Code Documentation
binlog.h
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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 public:
281 const char *generate_name(const char *log_name, const char *suffix,
282 char *buff);
283 bool is_open() const { return atomic_log_state != LOG_CLOSED; }
284
285 /* This is relay log */
287
288 uint8 checksum_alg_reset; // to contain a new value when binlog is rotated
289 /*
290 Holds the last seen in Relay-Log FD's checksum alg value.
291 The initial value comes from the slave's local FD that heads
292 the very first Relay-Log file. In the following the value may change
293 with each received master's FD_m.
294 Besides to be used in verification events that IO thread receives
295 (except the 1st fake Rotate, see @c Master_info:: checksum_alg_before_fd),
296 the value specifies if/how to compute checksum for slave's local events
297 and the first fake Rotate (R_f^1) coming from the master.
298 R_f^1 needs logging checksum-compatibly with the RL's heading FD_s.
299
300 Legends for the checksum related comments:
301
302 FD - Format-Description event,
303 R - Rotate event
304 R_f - the fake Rotate event
305 E - an arbirary event
306
307 The underscore indexes for any event
308 `_s' indicates the event is generated by Slave
309 `_m' - by Master
310
311 Two special underscore indexes of FD:
312 FD_q - Format Description event for queuing (relay-logging)
313 FD_e - Format Description event for executing (relay-logging)
314
315 Upper indexes:
316 E^n - n:th event is a sequence
317
318 RL - Relay Log
319 (A) - checksum algorithm descriptor value
320 FD.(A) - the value of (A) in FD
321 */
323
324 MYSQL_BIN_LOG(uint *sync_period, bool relay_log = false);
325 ~MYSQL_BIN_LOG() override;
326
328 PSI_mutex_key key_LOCK_index, PSI_mutex_key key_LOCK_commit,
329 PSI_mutex_key key_LOCK_commit_queue, PSI_mutex_key key_LOCK_done,
330 PSI_mutex_key key_LOCK_flush_queue, PSI_mutex_key key_LOCK_log,
331 PSI_mutex_key key_LOCK_binlog_end_pos, PSI_mutex_key key_LOCK_sync,
332 PSI_mutex_key key_LOCK_sync_queue, PSI_mutex_key key_LOCK_xids,
333 PSI_cond_key key_COND_done, PSI_cond_key key_COND_flush_queue,
334 PSI_cond_key key_update_cond, PSI_cond_key key_prep_xids_cond,
335 PSI_file_key key_file_log, PSI_file_key key_file_log_index,
336 PSI_file_key key_file_log_cache, PSI_file_key key_file_log_index_cache) {
337 m_key_COND_done = key_COND_done;
338 m_key_COND_flush_queue = key_COND_flush_queue;
339
340 m_key_LOCK_commit_queue = key_LOCK_commit_queue;
341 m_key_LOCK_done = key_LOCK_done;
342 m_key_LOCK_flush_queue = key_LOCK_flush_queue;
343 m_key_LOCK_sync_queue = key_LOCK_sync_queue;
344
345 m_key_LOCK_index = key_LOCK_index;
346 m_key_LOCK_log = key_LOCK_log;
347 m_key_LOCK_binlog_end_pos = key_LOCK_binlog_end_pos;
348 m_key_LOCK_commit = key_LOCK_commit;
349 m_key_LOCK_sync = key_LOCK_sync;
350 m_key_LOCK_xids = key_LOCK_xids;
351 m_key_update_cond = key_update_cond;
352 m_key_prep_xids_cond = key_prep_xids_cond;
353 m_key_file_log = key_file_log;
354 m_key_file_log_index = key_file_log_index;
355 m_key_file_log_cache = key_file_log_cache;
356 m_key_file_log_index_cache = key_file_log_index_cache;
357 }
358
359 public:
360 /** Manage the MTS dependency tracking */
362
363 /**
364 Find the oldest binary log referenced by the index file
365
366 @param[out] binlog_file_name the file name of oldest log found
367 @param[out] errmsg the error message outputted, which is left untouched
368 if the function returns false
369 @return false on success, true on error.
370 */
371 bool find_first_log(std::string &binlog_file_name, std::string &errmsg);
372
373 /**
374 Find the oldest binary log that contains any GTID that
375 is not in the given gtid set.
376
377 @param[out] binlog_file_name the file name of oldest binary log found
378 @param[in] gtid_set the given gtid set
379 @param[out] first_gtid the first GTID information from the binary log
380 file returned at binlog_file_name
381 @param[out] errmsg the error message outputted, which is left untouched
382 if the function returns false
383 @return false on success, true on error.
384 */
385 bool find_first_log_not_in_gtid_set(char *binlog_file_name,
386 const Gtid_set *gtid_set,
387 Gtid *first_gtid, std::string &errmsg);
388
389 /**
390 Reads the set of all GTIDs in the binary/relay log, and the set
391 of all lost GTIDs in the binary log, and stores each set in
392 respective argument.
393
394 @param gtid_set Will be filled with all GTIDs in this binary/relay
395 log.
396 @param lost_groups Will be filled with all GTIDs in the
397 Previous_gtids_log_event of the first binary log that has a
398 Previous_gtids_log_event. This is requested to binary logs but not
399 to relay logs.
400 @param verify_checksum If true, checksums will be checked.
401 @param need_lock If true, LOCK_log, LOCK_index, and
402 global_sid_lock->wrlock are acquired; otherwise they are asserted
403 to be taken already.
404 @param [out] trx_parser This will be used to return the actual
405 relaylog transaction parser state because of the possibility
406 of partial transactions.
407 @param [out] partial_trx If a transaction was left incomplete
408 on the relaylog, its GTID information should be returned to be
409 used in the case of the rest of the transaction be added to the
410 relaylog.
411 @param is_server_starting True if the server is starting.
412 @return false on success, true on error.
413 */
414 bool init_gtid_sets(Gtid_set *gtid_set, Gtid_set *lost_groups,
415 bool verify_checksum, bool need_lock,
416 Transaction_boundary_parser *trx_parser,
417 Gtid_monitoring_info *partial_trx,
418 bool is_server_starting = false);
419
420 void set_previous_gtid_set_relaylog(Gtid_set *previous_gtid_set_param) {
421 assert(is_relay_log);
422 previous_gtid_set_relaylog = previous_gtid_set_param;
423 }
424 /**
425 If the thread owns a GTID, this function generates an empty
426 transaction and releases ownership of the GTID.
427
428 - If the binary log is disabled for this thread, the GTID is
429 inserted directly into the mysql.gtid_executed table and the
430 GTID is included in @@global.gtid_executed. (This only happens
431 for DDL, since DML will save the GTID into table and release
432 ownership inside ha_commit_trans.)
433
434 - If the binary log is enabled for this thread, an empty
435 transaction consisting of GTID, BEGIN, COMMIT is written to the
436 binary log, the GTID is included in @@global.gtid_executed, and
437 the GTID is added to the mysql.gtid_executed table on the next
438 binlog rotation.
439
440 This function must be called by any committing statement (COMMIT,
441 implicitly committing statements, or Xid_log_event), after the
442 statement has completed execution, regardless of whether the
443 statement updated the database.
444
445 This logic ensures that an empty transaction is generated for the
446 following cases:
447
448 - Explicit empty transaction:
449 SET GTID_NEXT = 'UUID:NUMBER'; BEGIN; COMMIT;
450
451 - Transaction or DDL that gets completely filtered out in the
452 slave thread.
453
454 @param thd The committing thread
455
456 @retval 0 Success
457 @retval nonzero Error
458 */
459 int gtid_end_transaction(THD *thd);
460 /**
461 Re-encrypt previous existent binary/relay logs as below.
462 Starting from the next to last entry on the index file, iterating
463 down to the first one:
464 - If the file is encrypted, re-encrypt it. Otherwise, skip it.
465 - If failed to open the file, report an error.
466
467 @retval False Success
468 @retval True Error
469 */
470 bool reencrypt_logs();
471
472 private:
473 std::atomic<enum_log_state> atomic_log_state{LOG_CLOSED};
474
475 /* The previous gtid set in relay log. */
477
478 int open(const char *opt_name) override { return open_binlog(opt_name); }
479
480 /**
481 Enter a stage of the ordered commit procedure.
482
483 Entering is stage is done by:
484
485 - Atomically entering a queue of THD objects (which is just one for
486 the first phase).
487
488 - If the queue was empty, the thread is the leader for that stage
489 and it should process the entire queue for that stage.
490
491 - If the queue was not empty, the thread is a follower and can go
492 waiting for the commit to finish.
493
494 The function will lock the stage mutex if the calling thread was designated
495 leader for the phase.
496
497 @param[in] thd Session structure
498 @param[in] stage The stage to enter
499 @param[in] queue Thread queue for the stage
500 @param[in] leave_mutex Mutex that will be released when changing stage
501 @param[in] enter_mutex Mutex that will be taken when changing stage
502
503 @retval true In case this thread did not become leader, the function
504 returns true *after* the leader has completed the commit
505 on its behalf, so the thread should continue doing the
506 thread-local processing after the commit
507 (i.e. call finish_commit).
508
509 @retval false The thread is the leader for the stage and should do
510 the processing.
511 */
513 mysql_mutex_t *leave_mutex, mysql_mutex_t *enter_mutex);
514 std::pair<int, my_off_t> flush_thread_caches(THD *thd);
515 int flush_cache_to_file(my_off_t *flush_end_pos);
516 int finish_commit(THD *thd);
517 std::pair<bool, bool> sync_binlog_file(bool force);
519 void process_after_commit_stage_queue(THD *thd, THD *first);
520
521 /**
522 Set thread variables used while flushing a transaction.
523
524 @param[in] thd thread whose variables need to be set
525 @param[in] all This is @c true if this is a real transaction commit, and
526 @c false otherwise.
527 @param[in] skip_commit
528 This is @c true if the call to @c ha_commit_low should
529 be skipped (it is handled by the caller somehow) and @c
530 false otherwise (the normal case).
531 */
532 void init_thd_variables(THD *thd, bool all, bool skip_commit);
533
534 /**
535 Fetch and empty BINLOG_FLUSH_STAGE and COMMIT_ORDER_FLUSH_STAGE flush queues
536 and flush transactions to the disk, and unblock threads executing slave
537 preserve commit order.
538
539 @param[in] check_and_skip_flush_logs
540 if false then flush prepared records of transactions to the log
541 of storage engine.
542 if true then flush prepared records of transactions to the log
543 of storage engine only if COMMIT_ORDER_FLUSH_STAGE queue is
544 non-empty.
545
546 @return Pointer to the first session of the BINLOG_FLUSH_STAGE stage queue.
547 */
549 const bool check_and_skip_flush_logs = false);
550
551 /**
552 Execute the flush stage.
553
554 @param[out] total_bytes_var Pointer to variable that will be set to total
555 number of bytes flushed, or NULL.
556
557 @param[out] rotate_var Pointer to variable that will be set to true if
558 binlog rotation should be performed after releasing
559 locks. If rotate is not necessary, the variable will
560 not be touched.
561
562 @param[out] out_queue_var Pointer to the sessions queue in flush stage.
563
564 @return Error code on error, zero on success
565 */
566 int process_flush_stage_queue(my_off_t *total_bytes_var, bool *rotate_var,
567 THD **out_queue_var);
568
569 /**
570 Flush and commit the transaction.
571
572 This will execute an ordered flush and commit of all outstanding
573 transactions and is the main function for the binary log group
574 commit logic. The function performs the ordered commit in four stages.
575
576 Pre-condition: transactions should have called ha_prepare_low, using
577 HA_IGNORE_DURABILITY, before entering here.
578
579 Stage#0 implements replica-preserve-commit-order for applier threads that
580 write the binary log. i.e. it forces threads to enter the queue in the
581 correct commit order.
582
583 The stage#1 flushes the caches to the binary log and under
584 LOCK_log and marks all threads that were flushed as not pending.
585
586 The stage#2 syncs the binary log for all transactions in the group.
587
588 The stage#3 executes under LOCK_commit and commits all transactions in
589 order.
590
591 There are three queues of THD objects: one for each stage.
592 The Commit_order_manager maintains it own queue and its own order for the
593 commit. So Stage#0 doesn't maintain separate StageID.
594
595 When a transaction enters a stage, it adds itself to a queue. If the queue
596 was empty so that this becomes the first transaction in the queue, the
597 thread is the *leader* of the queue. Otherwise it is a *follower*. The
598 leader will do all work for all threads in the queue, and the followers
599 will wait until the last stage is finished.
600
601 Stage 0 (SLAVE COMMIT ORDER):
602 1. If replica-preserve-commit-order and is slave applier worker thread, then
603 waits until its turn to commit i.e. till it is on the top of the queue.
604 2. When it reaches top of the queue, it signals next worker in the commit
605 order queue to awake.
606
607 Stage 1 (FLUSH):
608 1. Sync the engines (ha_flush_logs), since they prepared using non-durable
609 settings (HA_IGNORE_DURABILITY).
610 2. Generate GTIDs for all transactions in the queue.
611 3. Write the session caches for all transactions in the queue to the binary
612 log.
613 4. Increment the counter of prepared XIDs.
614
615 Stage 2 (SYNC):
616 1. If it is time to sync, based on the sync_binlog option, sync the binlog.
617 2. If sync_binlog==1, signal dump threads that they can read up to the
618 position after the last transaction in the queue
619
620 Stage 3 (COMMIT):
621 This is performed by each thread separately, if binlog_order_commits=0.
622 Otherwise by the leader does it for all threads.
623 1. Call the after_sync hook.
624 2. update the max_committed counter in the dependency_tracker
625 3. call ha_commit_low
626 4. Call the after_commit hook
627 5. Update gtids
628 6. Decrement the counter of prepared transactions
629
630 If the binary log needs to be rotated, it is done after this. During
631 rotation, it takes a lock that prevents new commit groups from executing the
632 flush stage, and waits until the counter of prepared transactions becomes 0,
633 before it creates the new file.
634
635 @param[in] thd Session to commit transaction for
636 @param[in] all This is @c true if this is a real transaction commit, and
637 @c false otherwise.
638 @param[in] skip_commit
639 This is @c true if the call to @c ha_commit_low should
640 be skipped and @c false otherwise (the normal case).
641 */
642 int ordered_commit(THD *thd, bool all, bool skip_commit = false);
643 void handle_binlog_flush_or_sync_error(THD *thd, bool need_lock_log,
644 const char *message);
646 class Binlog_event_writer *writer);
648
649 public:
650 int open_binlog(const char *opt_name);
651 void close() override;
652 enum_result commit(THD *thd, bool all) override;
653 int rollback(THD *thd, bool all) override;
654 bool truncate_relaylog_file(Master_info *mi, my_off_t valid_pos);
655 int prepare(THD *thd, bool all) override;
656#if defined(MYSQL_SERVER)
657
660 bool is_transactional);
661
662#endif /* defined(MYSQL_SERVER) */
665 void harvest_bytes_written(Relay_log_info *rli, bool need_log_space_lock);
666 void set_max_size(ulong max_size_arg);
670 return;
671 }
672
673 void update_binlog_end_pos(bool need_lock = true);
674 void update_binlog_end_pos(const char *file, my_off_t pos);
675
676 int wait_for_update(const struct timespec *timeout);
677
678 public:
680 void cleanup();
681 /**
682 Create a new binary log.
683 @param log_name Name of binlog
684 @param new_name Name of binlog, too. todo: what's the difference
685 between new_name and log_name?
686 @param max_size_arg The size at which this binlog will be rotated.
687 @param null_created_arg If false, and a Format_description_log_event
688 is written, then the Format_description_log_event will have the
689 timestamp 0. Otherwise, it the timestamp will be the time when the
690 event was written to the log.
691 @param need_lock_index If true, LOCK_index is acquired; otherwise
692 LOCK_index must be taken by the caller.
693 @param need_sid_lock If true, the read lock on global_sid_lock
694 will be acquired. Otherwise, the caller must hold the read lock
695 on global_sid_lock.
696 @param extra_description_event The master's FDE to be written by the I/O
697 thread while creating a new relay log file. This should be NULL for
698 binary log files.
699 @param new_index_number The binary log file index number to start from
700 after the RESET MASTER TO command is called.
701 */
702 bool open_binlog(const char *log_name, const char *new_name,
703 ulong max_size_arg, bool null_created_arg,
704 bool need_lock_index, bool need_sid_lock,
705 Format_description_log_event *extra_description_event,
706 uint32 new_index_number = 0);
707 bool open_index_file(const char *index_file_name_arg, const char *log_name,
708 bool need_lock_index);
709 /* Use this to start writing a new log file */
710 int new_file(Format_description_log_event *extra_description_event);
711
712 bool write_event(Log_event *event_info);
713 bool write_cache(THD *thd, class binlog_cache_data *cache_data,
714 class Binlog_event_writer *writer);
715 /**
716 Assign automatic generated GTIDs for all commit group threads in the flush
717 stage having gtid_next.type == AUTOMATIC_GTID.
718
719 @param first_seen The first thread seen entering the flush stage.
720 @return Returns false if succeeds, otherwise true is returned.
721 */
723 bool write_transaction(THD *thd, binlog_cache_data *cache_data,
724 Binlog_event_writer *writer);
725
726 /**
727 Write a dml into statement cache and then flush it into binlog. It writes
728 Gtid_log_event and BEGIN, COMMIT automatically.
729
730 It is aimed to handle cases of "background" logging where a statement is
731 logged indirectly, like "TRUNCATE TABLE a_memory_table". So don't use it on
732 any normal statement.
733
734 @param[in] thd the THD object of current thread.
735 @param[in] stmt the DML statement.
736 @param[in] stmt_len the length of the DML statement.
737 @param[in] sql_command the type of SQL command.
738
739 @return Returns false if succeeds, otherwise true is returned.
740 */
741 bool write_stmt_directly(THD *thd, const char *stmt, size_t stmt_len,
742 enum enum_sql_command sql_command);
743
744 void report_cache_write_error(THD *thd, bool is_transactional);
745 bool check_write_error(const THD *thd);
746 bool write_incident(THD *thd, bool need_lock_log, const char *err_msg,
747 bool do_flush_and_sync = true);
748 bool write_incident(Incident_log_event *ev, THD *thd, bool need_lock_log,
749 const char *err_msg, bool do_flush_and_sync = true);
753 void start_union_events(THD *thd, query_id_t query_id_param);
754 void stop_union_events(THD *thd);
755 bool is_query_in_union(THD *thd, query_id_t query_id_param);
756
757 bool write_buffer(const char *buf, uint len, Master_info *mi);
758 bool write_event(Log_event *ev, Master_info *mi);
759
760 private:
762
763 public:
764 void make_log_name(char *buf, const char *log_ident);
765 bool is_active(const char *log_file_name);
766 int remove_logs_from_index(LOG_INFO *linfo, bool need_update_threads);
767 int rotate(bool force_rotate, bool *check_purge);
768
769 /**
770 @brief This function runs automatic purge if the conditions to meet
771 automatic purge are met. Such conditions are: log is open, instance is not
772 locked for backup and automatic purge is enabled.
773
774 If all conditions are met, purge is done according to the configuration
775 of the purge window.
776 */
777 void auto_purge();
778
779 /**
780 @brief This member function is to be called at server startup. It checks if
781 purge can be done and does if it can.
782 */
784 int rotate_and_purge(THD *thd, bool force_rotate);
785
786 bool flush();
787 /**
788 Flush binlog cache and synchronize to disk.
789
790 This function flushes events in binlog cache to binary log file,
791 it will do synchronizing according to the setting of system
792 variable 'sync_binlog'. If file is synchronized, @c synced will
793 be set to 1, otherwise 0.
794
795 @param[in] force if true, ignores the 'sync_binlog' and synchronizes the
796 file.
797
798 @retval 0 Success
799 @retval other Failure
800 */
801 bool flush_and_sync(const bool force = false);
802 int purge_logs(const char *to_log, bool included, bool need_lock_index,
803 bool need_update_threads, ulonglong *decrease_log_space,
804 bool auto_purge);
805 int purge_logs_before_date(time_t purge_time, bool auto_purge);
806 int set_crash_safe_index_file_name(const char *base_file_name);
809 int add_log_to_index(uchar *log_file_name, size_t name_len,
810 bool need_lock_index);
811 int move_crash_safe_index_file_to_index_file(bool need_lock_index);
812 int set_purge_index_file_name(const char *base_file_name);
817 int register_purge_index_entry(const char *entry);
818 int register_create_index_entry(const char *entry);
819 int purge_index_entry(THD *thd, ulonglong *decrease_log_space,
820 bool need_lock_index);
821 bool reset_logs(THD *thd, bool delete_only = false);
822 void close(uint exiting, bool need_lock_log, bool need_lock_index);
823
824 // iterating through the log index file
825 int find_log_pos(LOG_INFO *linfo, const char *log_name, bool need_lock_index);
826 int find_next_log(LOG_INFO *linfo, bool need_lock_index);
827 int find_next_relay_log(char log_name[FN_REFLEN + 1]);
828 int get_current_log(LOG_INFO *linfo, bool need_lock_log = true);
829 int raw_get_current_log(LOG_INFO *linfo);
831 /**
832 Retrieves the contents of the index file associated with this log object
833 into an `std::list<std::string>` object. The order held by the index file is
834 kept.
835
836 @param need_lock_index whether or not the lock over the index file should be
837 acquired inside the function.
838
839 @return a pair: a function status code; a list of `std::string` objects with
840 the content of the log index file.
841 */
842 std::pair<int, std::list<std::string>> get_log_index(
843 bool need_lock_index = true);
844 inline char *get_index_fname() { return index_file_name; }
845 inline char *get_log_fname() { return log_file_name; }
846 const char *get_name() const { return name; }
847 inline mysql_mutex_t *get_log_lock() { return &LOCK_log; }
849 inline mysql_cond_t *get_log_cond() { return &update_cond; }
851
854 inline IO_CACHE *get_index_file() { return &index_file; }
855
856 /**
857 Function to report the missing GTIDs.
858
859 This function logs the missing transactions on master to its error log
860 as a warning. If the missing GTIDs are too long to print in a message,
861 it suggests the steps to extract the missing transactions.
862
863 This function also informs slave about the GTID set sent by the slave,
864 transactions missing on the master and few suggestions to recover from
865 the error. This message shall be wrapped by
866 ER_MASTER_FATAL_ERROR_READING_BINLOG on slave and will be logged as an
867 error.
868
869 This function will be called from mysql_binlog_send() function.
870
871 @param slave_executed_gtid_set GTID set executed by slave
872 @param errmsg Pointer to the error message
873 */
874 void report_missing_purged_gtids(const Gtid_set *slave_executed_gtid_set,
875 std::string &errmsg);
876
877 /**
878 Function to report the missing GTIDs.
879
880 This function logs the missing transactions on master to its error log
881 as a warning. If the missing GTIDs are too long to print in a message,
882 it suggests the steps to extract the missing transactions.
883
884 This function also informs slave about the GTID set sent by the slave,
885 transactions missing on the master and few suggestions to recover from
886 the error. This message shall be wrapped by
887 ER_MASTER_FATAL_ERROR_READING_BINLOG on slave and will be logged as an
888 error.
889
890 This function will be called from find_first_log_not_in_gtid_set()
891 function.
892
893 @param previous_gtid_set Previous GTID set found
894 @param slave_executed_gtid_set GTID set executed by slave
895 @param errmsg Pointer to the error message
896 */
897 void report_missing_gtids(const Gtid_set *previous_gtid_set,
898 const Gtid_set *slave_executed_gtid_set,
899 std::string &errmsg);
901 /*
902 It is called by the threads (e.g. dump thread, applier thread) which want
903 to read hot log without LOCK_log protection.
904 */
908 }
912
913 /**
914 Deep copy global_sid_map and gtid_executed.
915 Both operations are done under LOCK_commit and global_sid_lock
916 protection.
917
918 @param[out] sid_map The Sid_map to which global_sid_map will
919 be copied.
920 @param[out] gtid_set The Gtid_set to which gtid_executed will
921 be copied.
922
923 @return the operation status
924 @retval 0 OK
925 @retval !=0 Error
926 */
927 int get_gtid_executed(Sid_map *sid_map, Gtid_set *gtid_set);
928
929 /*
930 True while rotating binlog, which is caused by logging Incident_log_event.
931 */
933};
934
939};
940
942
943/**
944 Check if the the transaction is empty.
945
946 @param thd The client thread that executed the current statement.
947
948 @retval true No changes found in any storage engine
949 @retval false Otherwise.
950
951**/
952bool is_transaction_empty(THD *thd);
953/**
954 Check if the transaction has no rw flag set for any of the storage engines.
955
956 @param thd The client thread that executed the current statement.
957 @param trx_scope The transaction scope to look into.
958
959 @retval the number of engines which have actual changes.
960 */
962
963/**
964 Check if at least one of transacaction and statement binlog caches contains
965 an empty transaction, other one is empty or contains an empty transaction,
966 which has two binlog events "BEGIN" and "COMMIT".
967
968 @param thd The client thread that executed the current statement.
969
970 @retval true At least one of transacaction and statement binlog caches
971 contains an empty transaction, other one is empty or
972 contains an empty transaction.
973 @retval false Otherwise.
974*/
976bool trans_has_updated_trans_table(const THD *thd);
978bool ending_trans(THD *thd, const bool all);
979bool ending_single_stmt_trans(THD *thd, const bool all);
980bool trans_cannot_safely_rollback(const THD *thd);
981bool stmt_cannot_safely_rollback(const THD *thd);
982
984
985/**
986 @brief Purges the binary log files up to the file name passed as
987 a paramenter. Purge will not delete the file passed as
988 an argument.
989
990 @param thd The session context.
991 @param to_log Up to which log file to purge.
992 @return true if there was an error.
993 @return false if there was no error.
994 */
995bool purge_source_logs_to_file(THD *thd, const char *to_log);
996
997bool purge_source_logs_before_date(THD *thd, time_t purge_time);
1000void check_binlog_cache_size(THD *thd);
1002bool binlog_enabled();
1003void register_binlog_handler(THD *thd, bool trx);
1004int query_error_code(const THD *thd, bool not_killed);
1005
1006extern const char *log_bin_index;
1007extern const char *log_bin_basename;
1008extern bool opt_binlog_order_commits;
1009extern ulong rpl_read_size;
1010/**
1011 Turns a relative log binary log path into a full path, based on the
1012 opt_bin_logname or opt_relay_logname. Also trims the cr-lf at the
1013 end of the full_path before return to avoid any server startup
1014 problem on windows.
1015
1016 @param from The log name we want to make into an absolute path.
1017 @param to The buffer where to put the results of the
1018 normalization.
1019 @param is_relay_log Switch that makes is used inside to choose which
1020 option (opt_bin_logname or opt_relay_logname) to
1021 use when calculating the base path.
1022
1023 @returns true if a problem occurs, false otherwise.
1024 */
1025
1026bool normalize_binlog_name(char *to, const char *from, bool is_relay_log);
1027
1028#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:1329
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
Either statement transaction or normal transaction - related thread-specific storage engine data.
Definition: transaction_info.h:406
Class representing an incident, an occurance out of the ordinary, that happened on the master.
Definition: log_event.h:3501
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:337
Definition: binlog.h:139
mysql_mutex_t * get_binlog_end_pos_lock()
Definition: binlog.h:909
const char * get_name() const
Definition: binlog.h:846
mysql_cond_t m_prep_xids_cond
Definition: binlog.h:241
mysql_mutex_t * get_commit_lock()
Definition: binlog.h:848
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:911
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:420
IO_CACHE crash_safe_index_file
Definition: binlog.h:209
void reset_bytes_written()
Definition: binlog.h:664
void lock_binlog_end_pos()
Definition: binlog.h:910
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:327
Binlog_ofile * get_binlog_file()
Definition: binlog.h:850
int open(const char *opt_name) override
Initialize and open the coordinator log.
Definition: binlog.h:478
mysql_mutex_t * get_log_lock()
Definition: binlog.h:847
bool is_open() const
Definition: binlog.h:283
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:905
void lock_index()
Definition: binlog.h:852
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:473
Gtid_set * previous_gtid_set_relaylog
Definition: binlog.h:476
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:844
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:663
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:854
mysql_cond_t * get_log_cond()
Definition: binlog.h:849
mysql_mutex_t LOCK_log
Definition: binlog.h:147
ulong max_size
Definition: binlog.h:229
bool is_relay_log
Definition: binlog.h:286
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:322
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:853
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:845
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:361
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:932
char * name
Definition: binlog.h:148
char log_file_name[FN_REFLEN]
Definition: binlog.h:149
void signal_update()
Definition: binlog.h:667
uint8 checksum_alg_reset
Definition: binlog.h:288
char crash_safe_index_file_name[FN_REFLEN]
Definition: binlog.h:210
static const int MAX_RETRIES_FOR_DELETE_RENAME_FAILURE
Definition: binlog.h:900
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:2698
Represents a bidirectional map between SID and SIDNO.
Definition: rpl_gtid.h:723
Transaction Coordinator Log.
Definition: tc_log.h:54
enum_result
Definition: tc_log.h:70
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_class.h:945
This is the base class for verifying transaction boundaries.
Definition: trx_boundary_parser.h:47
enum_trx_scope
Definition: transaction_info.h:53
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:658
Definition: item_func.h:3011
#define mysql_mutex_lock(M)
Definition: mysql_mutex.h:49
#define mysql_mutex_unlock(M)
Definition: mysql_mutex.h:56
DBUG_TRACE
Definition: do_ctype.cc:46
char * pos
Definition: do_ctype.cc:76
void harvest_bytes_written(Relay_log_info *rli, bool need_log_space_lock)
Definition: binlog.cc:7795
int wait_for_update(const struct timespec *timeout)
Wait until we get a signal that the binary log has been updated.
Definition: binlog.cc:7683
bool mysql_show_binlog_events(THD *thd)
Execute a SHOW BINLOG EVENTS statement.
Definition: binlog.cc:3526
bool stmt_cannot_safely_rollback(const THD *thd)
This function checks if current statement cannot be rollded back safely.
Definition: binlog.cc:3172
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:193
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:5606
int close_purge_index_file()
Definition: binlog.cc:6122
void set_max_size(ulong max_size_arg)
Definition: binlog.cc:7814
ulong rpl_read_size
Definition: binlog.cc:170
int flush_cache_to_file(my_off_t *flush_end_pos)
Flush the I/O cache to file.
Definition: binlog.cc:8634
void report_cache_write_error(THD *thd, bool is_transactional)
Definition: binlog.cc:5402
bool is_transaction_empty(THD *thd)
Check if the the transaction is empty.
Definition: binlog.cc:3061
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:3323
bool trans_cannot_safely_rollback(const THD *thd)
This function checks if a transaction cannot be rolled back safely.
Definition: binlog.cc:3159
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:8399
int rotate(bool force_rotate, bool *check_purge)
The method executes rotation when LOCK_log is already acquired by the caller.
Definition: binlog.cc:7179
void update_thd_next_event_pos(THD *thd)
Definition: binlog.cc:6953
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:5451
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:3100
void close() override
This is called on shutdown, after ha_panic.
Definition: binlog.cc:8009
int new_file_without_locking(Format_description_log_event *extra_description_event)
Definition: binlog.cc:6514
void report_missing_purged_gtids(const Gtid_set *slave_executed_gtid_set, std::string &errmsg)
Function to report the missing GTIDs.
Definition: binlog.cc:9283
uint next_file_id()
Definition: binlog.cc:7286
void cleanup()
Definition: binlog.cc:3575
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:8441
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:7334
int rollback(THD *thd, bool all) override
Write a rollback record of the transaction to the binary log.
Definition: binlog.cc:2533
void init_pthread_objects()
Definition: binlog.cc:3598
bool reencrypt_logs()
Re-encrypt previous existent binary/relay logs as below.
Definition: binlog.cc:1847
const char * log_bin_index
Definition: binlog.cc:166
int open_binlog(const char *opt_name)
Definition: binlog.cc:7838
~MYSQL_BIN_LOG() override
Definition: binlog.cc:3571
bool binlog_enabled()
Check whether binlog_hton has valid slot and enabled.
Definition: binlog.cc:1281
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:3081
int register_purge_index_entry(const char *entry)
Definition: binlog.cc:6153
int sync_purge_index_file()
Definition: binlog.cc:6142
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:1726
int set_purge_index_file_name(const char *base_file_name)
Definition: binlog.cc:6087
void process_commit_stage_queue(THD *thd, THD *queue)
Commit a sequence of sessions.
Definition: binlog.cc:8497
void register_binlog_handler(THD *thd, bool trx)
Definition: binlog.cc:9491
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:3822
bool write_buffer(const char *buf, uint len, Master_info *mi)
Definition: binlog.cc:6894
int open_purge_index_file(bool destroy)
Definition: binlog.cc:6099
int set_crash_safe_index_file_name(const char *base_file_name)
Set the name of crash safe index file.
Definition: binlog.cc:5815
const char * log_bin_basename
Definition: binlog.cc:167
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:5968
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:1570
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:7970
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:1242
bool write_event_to_binlog_and_sync(Log_event *ev)
Definition: binlog.cc:7570
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:1262
std::pair< bool, bool > sync_binlog_file(bool force)
Call fsync() to sync the file to disk.
Definition: binlog.cc:8647
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:5585
int generate_new_name(char *new_name, const char *log_name, uint32 new_index_number=0)
Definition: binlog.cc:3757
int flush_and_set_pending_rows_event(THD *thd, Rows_log_event *event, bool is_transactional)
Definition: binlog.cc:6969
int finish_commit(THD *thd)
Helper function executed when leaving ordered_commit.
Definition: binlog.cc:8689
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:7496
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:3148
int raw_get_current_log(LOG_INFO *linfo)
Definition: binlog.cc:5375
int remove_logs_from_index(LOG_INFO *linfo, bool need_update_threads)
Remove logs from index file.
Definition: binlog.cc:5906
enum_result commit(THD *thd, bool all) override
Commit the transaction in the transaction coordinator.
Definition: binlog.cc:8074
bool check_write_error(const THD *thd)
Definition: binlog.cc:5383
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:3187
int get_gtid_executed(Sid_map *sid_map, Gtid_set *gtid_set)
Deep copy global_sid_map and gtid_executed.
Definition: binlog.cc:7294
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:5539
void make_log_name(char *buf, const char *log_ident)
Create a new log file name.
Definition: binlog.cc:6455
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:8603
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:4465
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:7608
bool write_event(Log_event *event_info)
Write an event to the binary log cache.
Definition: binlog.cc:7012
void update_binlog_end_pos(bool need_lock=true)
Definition: binlog.cc:9406
int rotate_and_purge(THD *thd, bool force_rotate)
Execute a FLUSH LOGS statement.
Definition: binlog.cc:7254
int get_current_log(LOG_INFO *linfo, bool need_lock_log=true)
Definition: binlog.cc:5367
bool is_query_in_union(THD *thd, query_id_t query_id_param)
Definition: binlog.cc:6944
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:6534
bool write_event_to_binlog(Log_event *ev)
Definition: binlog.cc:7549
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:5649
bool purge_source_logs_before_date(THD *thd, time_t purge_time)
Execute a PURGE BINARY LOGS BEFORE <date> command.
Definition: binlog.cc:3215
bool is_active(const char *log_file_name)
Check if we are writing/reading to the given log file.
Definition: binlog.cc:6466
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:3133
int query_error_code(const THD *thd, bool not_killed)
Definition: binlog.cc:3255
void process_after_commit_stage_queue(THD *thd, THD *first)
Process after commit for a sequence of sessions.
Definition: binlog.cc:8572
std::pair< int, my_off_t > flush_thread_caches(THD *thd)
Flush caches for session.
Definition: binlog.cc:8347
int move_crash_safe_index_file_to_index_file(bool need_lock_index)
Move crash safe index file to index file.
Definition: binlog.cc:5166
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:9347
int purge_index_entry(THD *thd, ulonglong *decrease_log_space, bool need_lock_index)
Definition: binlog.cc:6170
bool init_and_set_log_file_name(const char *log_name, const char *new_name, uint32 new_index_number)
Definition: binlog.cc:3797
const char * generate_name(const char *log_name, const char *suffix, char *buff)
Definition: binlog.cc:3778
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:6339
bool opt_binlog_order_commits
Definition: binlog.cc:164
void init_thd_variables(THD *thd, bool all, bool skip_commit)
Set thread variables used while flushing a transaction.
Definition: binlog.cc:8364
int open_crash_safe_index_file()
Open a (new) crash safe index file.
Definition: binlog.cc:5839
void start_union_events(THD *thd, query_id_t query_id_param)
Definition: binlog.cc:6931
bool is_inited_purge_index_file()
Definition: binlog.cc:6137
bool open_index_file(const char *index_file_name_arg, const char *log_name, bool need_lock_index)
Definition: binlog.cc:3875
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:7528
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:1515
int register_create_index_entry(const char *entry)
Definition: binlog.cc:6165
int close_crash_safe_index_file()
Close the crash safe index file.
Definition: binlog.cc:5871
void auto_purge()
This function runs automatic purge if the conditions to meet automatic purge are met.
Definition: binlog.cc:7209
int prepare(THD *thd, bool all) override
Log a prepare record of the transaction to the storage engines.
Definition: binlog.cc:8021
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:8809
int ordered_commit(THD *thd, bool all, bool skip_commit=false)
Flush and commit the transaction.
Definition: binlog.cc:8858
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:5324
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:4578
MYSQL_BIN_LOG(uint *sync_period, bool relay_log=false)
Definition: binlog.cc:3547
bool flush_and_sync(const bool force=false)
Flush binlog cache and synchronize to disk.
Definition: binlog.cc:6921
int new_file(Format_description_log_event *extra_description_event)
Definition: binlog.cc:6505
bool show_binlog_events(THD *thd, MYSQL_BIN_LOG *binary_log)
Definition: binlog.cc:3358
void inc_prep_xids(THD *thd)
Increment the prepared XID counter.
Definition: binlog.cc:6470
void dec_prep_xids(THD *thd)
Decrement the prepared XID counter.
Definition: binlog.cc:6481
void stop_union_events(THD *thd)
Definition: binlog.cc:6939
bool flush()
Definition: binlog.cc:6917
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:3068
bool stmt_has_updated_trans_table(Ha_trx_info *ha_list)
This function checks if a transactional table was updated by the current statement.
Definition: binlog.cc:3114
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:4480
void report_binlog_write_error()
Definition: binlog.cc:7660
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:6773
void auto_purge_at_server_startup()
This member function is to be called at server startup.
Definition: binlog.cc:7197
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:1629
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.
int(* mysql_cond_broadcast)(mysql_cond_t *that, const char *src_file, unsigned int src_line)
Definition: mysql_cond_service.h:51
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:412
Definition: buf0block_hint.cc:29
Definition: os0file.h:85
static bool timeout(bool(*wait_condition)())
Timeout function.
Definition: log0meb.cc:493
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:935
bool log_delayed
Definition: binlog.h:938
my_off_t last_pos_in_file
Definition: binlog.h:937
bool logged_data_file
Definition: binlog.h:938
THD * thd
Definition: binlog.h:936
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