diff options
Diffstat (limited to 'sql/log_event.h')
| -rw-r--r-- | sql/log_event.h | 1214 |
1 files changed, 1114 insertions, 100 deletions
diff --git a/sql/log_event.h b/sql/log_event.h index 04aac5d08fc..0c66d1b190f 100644 --- a/sql/log_event.h +++ b/sql/log_event.h @@ -13,18 +13,30 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +/** + @addtogroup Replication + @{ + + @file + + Binary log event definitions. +*/ + #ifndef _log_event_h #define _log_event_h -#ifdef __EMX__ -#undef write // remove pthread.h macro definition, conflict with write() class member -#endif - #if defined(USE_PRAGMA_INTERFACE) && !defined(MYSQL_CLIENT) #pragma interface /* gcc class implementation */ #endif +#include <my_bitmap.h> +#include "rpl_constants.h" +#ifndef MYSQL_CLIENT +#include "rpl_record.h" +#include "rpl_reporting.h" +#endif + #define LOG_READ_EOF -1 #define LOG_READ_BOGUS -2 #define LOG_READ_IO -3 @@ -58,8 +70,8 @@ which increments every time we write an event to the binlog) (3 bytes). Q: how do we handle when the counter is overflowed and restarts from 0 ? - - Query and Load (Create or Execute) events may have a more precise timestamp - (with microseconds), number of matched/affected/warnings rows + - Query and Load (Create or Execute) events may have a more precise + timestamp (with microseconds), number of matched/affected/warnings rows and fields of session variables: SQL_MODE, FOREIGN_KEY_CHECKS, UNIQUE_CHECKS, SQL_AUTO_IS_NULL, the collations and charsets, the PASSWORD() version (old/new/...). @@ -196,9 +208,11 @@ struct sql_ex_info #define EXEC_LOAD_HEADER_LEN 4 #define DELETE_FILE_HEADER_LEN 4 #define FORMAT_DESCRIPTION_HEADER_LEN (START_V3_HEADER_LEN+1+LOG_EVENT_TYPES) +#define ROWS_HEADER_LEN 8 +#define TABLE_MAP_HEADER_LEN 8 #define EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN (4 + 4 + 4 + 1) #define EXECUTE_LOAD_QUERY_HEADER_LEN (QUERY_HEADER_LEN + EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN) - +#define INCIDENT_HEADER_LEN 2 /* Max number of possible extra bytes in a replication event compared to a packet (i.e. a query) sent from client to master; @@ -323,6 +337,14 @@ struct sql_ex_info /* DF = "Delete File" */ #define DF_FILE_ID_OFFSET 0 +/* TM = "Table Map" */ +#define TM_MAPID_OFFSET 0 +#define TM_FLAGS_OFFSET 6 + +/* RW = "RoWs" */ +#define RW_MAPID_OFFSET 0 +#define RW_FLAGS_OFFSET 6 + /* ELQ = "Execute Load Query" */ #define ELQ_FILE_ID_OFFSET QUERY_HEADER_LEN #define ELQ_FN_POS_START_OFFSET ELQ_FILE_ID_OFFSET + 4 @@ -394,6 +416,12 @@ struct sql_ex_info #define LOG_EVENT_SUPPRESS_USE_F 0x8 /* + The table map version internal to the log should be increased after + the event has been written to the binary log. + */ +#define LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F 0x10 + +/* OPTIONS_WRITTEN_TO_BIN_LOG are the bits of thd->options which must be written to the binlog. OPTIONS_WRITTEN_TO_BINLOG could be written into the Format_description_log_event, so that if later we don't want @@ -411,12 +439,18 @@ struct sql_ex_info either, as the manual says (because a too big in-memory temp table is automatically written to disk). */ -#define OPTIONS_WRITTEN_TO_BIN_LOG (OPTION_AUTO_IS_NULL | \ -OPTION_NO_FOREIGN_KEY_CHECKS | OPTION_RELAXED_UNIQUE_CHECKS) +#define OPTIONS_WRITTEN_TO_BIN_LOG \ + (OPTION_AUTO_IS_NULL | OPTION_NO_FOREIGN_KEY_CHECKS | \ + OPTION_RELAXED_UNIQUE_CHECKS | OPTION_NOT_AUTOCOMMIT) -#if OPTIONS_WRITTEN_TO_BIN_LOG != ((1L << 14) | (1L << 26) | (1L << 27)) +/* Shouldn't be defined before */ +#define EXPECTED_OPTIONS \ + ((ULL(1) << 14) | (ULL(1) << 26) | (ULL(1) << 27) | (ULL(1) << 19)) + +#if OPTIONS_WRITTEN_TO_BIN_LOG != EXPECTED_OPTIONS #error OPTIONS_WRITTEN_TO_BIN_LOG must NOT change their values! #endif +#undef EXPECTED_OPTIONS /* You shouldn't use this one */ enum Log_event_type { @@ -449,6 +483,28 @@ enum Log_event_type BEGIN_LOAD_QUERY_EVENT= 17, EXECUTE_LOAD_QUERY_EVENT= 18, + TABLE_MAP_EVENT = 19, + + /* + These event numbers were used for 5.1.0 to 5.1.15 and are + therefore obsolete. + */ + PRE_GA_WRITE_ROWS_EVENT = 20, + PRE_GA_UPDATE_ROWS_EVENT = 21, + PRE_GA_DELETE_ROWS_EVENT = 22, + + /* + These event numbers are used from 5.1.16 and forward + */ + WRITE_ROWS_EVENT = 23, + UPDATE_ROWS_EVENT = 24, + DELETE_ROWS_EVENT = 25, + + /* + Something out of the ordinary happened on the master + */ + INCIDENT_EVENT= 26, + /* Add new events here - right above this comment! Existing events (except ENUM_END_EVENT) should never change their numbers @@ -472,13 +528,12 @@ enum Int_event_type #ifndef MYSQL_CLIENT class String; -class MYSQL_LOG; +class MYSQL_BIN_LOG; class THD; #endif class Format_description_log_event; - -struct st_relay_log_info; +class Relay_log_info; #ifdef MYSQL_CLIENT /* @@ -524,15 +579,35 @@ typedef struct st_print_event_info bzero(db, sizeof(db)); bzero(charset, sizeof(charset)); bzero(time_zone_str, sizeof(time_zone_str)); - strcpy(delimiter, ";"); + delimiter[0]= ';'; + delimiter[1]= 0; + myf const flags = MYF(MY_WME | MY_NABP); + open_cached_file(&head_cache, NULL, NULL, 0, flags); + open_cached_file(&body_cache, NULL, NULL, 0, flags); } + ~st_print_event_info() { + close_cached_file(&head_cache); + close_cached_file(&body_cache); + } + bool init_ok() /* tells if construction was successful */ + { return my_b_inited(&head_cache) && my_b_inited(&body_cache); } + + /* Settings on how to print the events */ bool short_form; + bool base64_output; my_off_t hexdump_from; uint8 common_header_len; char delimiter[16]; + /* + These two caches are used by the row-based replication events to + collect the header information and the main body of the events + making up a statement. + */ + IO_CACHE head_cache; + IO_CACHE body_cache; } PRINT_EVENT_INFO; #endif @@ -547,6 +622,33 @@ typedef struct st_print_event_info class Log_event { public: + /** + Enumeration of what kinds of skipping (and non-skipping) that can + occur when the slave executes an event. + + @see shall_skip + @see do_shall_skip + */ + enum enum_skip_reason { + /** + Don't skip event. + */ + EVENT_SKIP_NOT, + + /** + Skip event by ignoring it. + + This means that the slave skip counter will not be changed. + */ + EVENT_SKIP_IGNORE, + + /** + Skip event and decrease skip counter. + */ + EVENT_SKIP_COUNT + }; + + /* The following type definition is to be used whenever data is placed and manipulated in a common buffer. Use this typedef for buffers @@ -617,7 +719,8 @@ public: */ static Log_event* read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock, - const Format_description_log_event *description_event); + const Format_description_log_event + *description_event); static int read_log_event(IO_CACHE* file, String* packet, pthread_mutex_t* log_lock); /* @@ -628,16 +731,14 @@ public: static void init_show_field_list(List<Item>* field_list); #ifdef HAVE_REPLICATION int net_send(Protocol *protocol, const char* log_name, my_off_t pos); + /* pack_info() is used by SHOW BINLOG EVENTS; as print() it prepares and sends a string to display to the user, so it resembles print(). */ + virtual void pack_info(Protocol *protocol); - /* - The SQL slave thread calls exec_event() to execute the event; this is where - the slave's data is modified. - */ - virtual int exec_event(struct st_relay_log_info* rli); + #endif /* HAVE_REPLICATION */ virtual const char* get_db() { @@ -647,22 +748,31 @@ public: Log_event() : temp_buf(0) {} /* avoid having to link mysqlbinlog against libpthread */ static Log_event* read_log_event(IO_CACHE* file, - const Format_description_log_event *description_event); + const Format_description_log_event + *description_event); /* print*() functions are used by mysqlbinlog */ - virtual void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0) = 0; - void print_timestamp(FILE* file, time_t *ts = 0); - void print_header(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + virtual void print(FILE* file, PRINT_EVENT_INFO* print_event_info) = 0; + void print_timestamp(IO_CACHE* file, time_t *ts = 0); + void print_header(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info, + bool is_more); + void print_base64(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info, + bool is_more); #endif static void *operator new(size_t size) { return (void*) my_malloc((uint)size, MYF(MY_WME|MY_FAE)); } + static void operator delete(void *ptr, size_t size) { - my_free((gptr) ptr, MYF(MY_WME|MY_ALLOW_ZERO_PTR)); + my_free((uchar*) ptr, MYF(MY_WME|MY_ALLOW_ZERO_PTR)); } + /* Placement version of the above operators */ + static void *operator new(size_t, void* ptr) { return ptr; } + static void operator delete(void*, void*) { } + #ifndef MYSQL_CLIENT bool write_header(IO_CACHE* file, ulong data_length); virtual bool write(IO_CACHE* file) @@ -675,12 +785,24 @@ public: { return 0; } virtual bool write_data_body(IO_CACHE* file __attribute__((unused))) { return 0; } + inline time_t get_time() + { + THD *tmp_thd; + if (when) + return when; + if (thd) + return thd->start_time; + if ((tmp_thd= current_thd)) + return tmp_thd->start_time; + return my_time(0); + } #endif virtual Log_event_type get_type_code() = 0; virtual bool is_valid() const = 0; virtual bool is_artificial_event() { return 0; } - inline bool get_cache_stmt() { return cache_stmt; } - Log_event(const char* buf, const Format_description_log_event* description_event); + inline bool get_cache_stmt() const { return cache_stmt; } + Log_event(const char* buf, const Format_description_log_event + *description_event); virtual ~Log_event() { free_temp_buf();} void register_temp_buf(char* buf) { temp_buf = buf; } void free_temp_buf() @@ -702,6 +824,130 @@ public: *description_event); /* returns the human readable name of the event's type */ const char* get_type_str(); + + /* Return start of query time or current time */ + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) +public: + + /** + Apply the event to the database. + + This function represents the public interface for applying an + event. + + @see do_apply_event + */ + int apply_event(Relay_log_info const *rli) + { + return do_apply_event(rli); + } + + + /** + Update the relay log position. + + This function represents the public interface for "stepping over" + the event and will update the relay log information. + + @see do_update_pos + */ + int update_pos(Relay_log_info *rli) + { + return do_update_pos(rli); + } + + /** + Decide if the event shall be skipped, and the reason for skipping + it. + + @see do_shall_skip + */ + enum_skip_reason shall_skip(Relay_log_info *rli) + { + return do_shall_skip(rli); + } + +protected: + + /** + Primitive to apply an event to the database. + + This is where the change to the database is made. + + @note The primitive is protected instead of private, since there + is a hierarchy of actions to be performed in some cases. + + @see Format_description_log_event::do_apply_event() + + @param rli Pointer to relay log info structure + + @retval 0 Event applied successfully + @retval errno Error code if event application failed + */ + virtual int do_apply_event(Relay_log_info const *rli) + { + return 0; /* Default implementation does nothing */ + } + + + /** + Advance relay log coordinates. + + This function is called to advance the relay log coordinates to + just after the event. It is essential that both the relay log + coordinate and the group log position is updated correctly, since + this function is used also for skipping events. + + Normally, each implementation of do_update_pos() shall: + + - Update the event position to refer to the position just after + the event. + + - Update the group log position to refer to the position just + after the event <em>if the event is last in a group</em> + + @param rli Pointer to relay log info structure + + @retval 0 Coordinates changed successfully + @retval errno Error code if advancing failed (usually just + 1). Observe that handler errors are returned by the + do_apply_event() function, and not by this one. + */ + virtual int do_update_pos(Relay_log_info *rli); + + + /** + Decide if this event shall be skipped or not and the reason for + skipping it. + + The default implementation decide that the event shall be skipped + if either: + + - the server id of the event is the same as the server id of the + server and <code>rli->replicate_same_server_id</code> is true, + or + + - if <code>rli->slave_skip_counter</code> is greater than zero. + + @see do_apply_event + @see do_update_pos + + @retval Log_event::EVENT_SKIP_NOT + The event shall not be skipped and should be applied. + + @retval Log_event::EVENT_SKIP_IGNORE + The event shall be skipped by just ignoring it, i.e., the slave + skip counter shall not be changed. This happends if, for example, + the originating server id of the event is the same as the server + id of the slave. + + @retval Log_event::EVENT_SKIP_COUNT + The event shall be skipped because the slave skip counter was + non-zero. The caller shall decrease the counter by one. + */ + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; /* @@ -742,10 +988,10 @@ public: uint16 error_code; ulong thread_id; /* - For events created by Query_log_event::exec_event (and - Load_log_event::exec_event()) we need the *original* thread id, to be able - to log the event with the original (=master's) thread id (fix for - BUG#1686). + For events created by Query_log_event::do_apply_event (and + Load_log_event::do_apply_event()) we need the *original* thread + id, to be able to log the event with the original (=master's) + thread id (fix for BUG#1686). */ ulong slave_proxy_id; @@ -809,13 +1055,10 @@ public: const char* get_db() { return db; } #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); - int exec_event(struct st_relay_log_info* rli, const char *query_arg, - uint32 q_len_arg); #endif /* HAVE_REPLICATION */ #else - void print_query_header(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print_query_header(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Query_log_event(); @@ -825,7 +1068,7 @@ public: ~Query_log_event() { if (data_buf) - my_free((gptr) data_buf, MYF(0)); + my_free((uchar*) data_buf, MYF(0)); } Log_event_type get_type_code() { return QUERY_EVENT; } #ifndef MYSQL_CLIENT @@ -840,6 +1083,16 @@ public: */ virtual ulong get_post_header_size_for_derived() { return 0; } /* Writes derived event-specific part of post header. */ + +public: /* !!! Public in this patch to allow old usage */ +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + + int do_apply_event(Relay_log_info const *rli, + const char *query_arg, + uint32 q_len_arg); +#endif /* HAVE_REPLICATION */ }; @@ -888,11 +1141,10 @@ public: uint16 master_port; #ifndef MYSQL_CLIENT - Slave_log_event(THD* thd_arg, struct st_relay_log_info* rli); + Slave_log_event(THD* thd_arg, Relay_log_info* rli); void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Slave_log_event(const char* buf, uint event_len); @@ -903,6 +1155,11 @@ public: #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); #endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const* rli); +#endif }; #endif /* HAVE_REPLICATION */ @@ -921,7 +1178,8 @@ private: char **fn_start, char **fn_end); protected: int copy_log_event(const char *buf, ulong event_len, - int body_offset, const Format_description_log_event* description_event); + int body_offset, + const Format_description_log_event* description_event); public: ulong thread_id; @@ -972,15 +1230,9 @@ public: const char* get_db() { return db; } #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli) - { - return exec_event(thd->slave_net,rli,0); - } - int exec_event(NET* net, struct st_relay_log_info* rli, - bool use_rli_only_for_errors); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info = 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); void print(FILE* file, PRINT_EVENT_INFO* print_event_info, bool commented); #endif @@ -1009,6 +1261,17 @@ public: + LOAD_HEADER_LEN + sql_ex.data_size() + field_block_len + num_fields); } + +public: /* !!! Public in this patch to allow old usage */ +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const* rli) + { + return do_apply_event(thd->slave_net,rli,0); + } + + int do_apply_event(NET *net, Relay_log_info const *rli, + bool use_rli_only_for_errors); +#endif }; extern char server_version[SERVER_VERSION_LENGTH]; @@ -1061,16 +1324,20 @@ public: setting log_event == 0 (for now). */ bool artificial_event; + /* + We set this to 1 if we don't want to have the created time in the log, + which is the case when we rollover to a new log. + */ + bool dont_set_created; #ifndef MYSQL_CLIENT Start_log_event_v3(); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else Start_log_event_v3() {} - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Start_log_event_v3(const char* buf, @@ -1086,6 +1353,22 @@ public: return START_V3_HEADER_LEN; //no variable-sized part } virtual bool is_artificial_event() { return artificial_event; } + +protected: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info*) + { + /* + Events from ourself should be skipped, but they should not + decrease the slave skip counter. + */ + if (this->server_id == ::server_id) + return Log_event::EVENT_SKIP_IGNORE; + else + return Log_event::EVENT_SKIP_NOT; + } +#endif }; @@ -1111,16 +1394,10 @@ public: uchar server_version_split[3]; Format_description_log_event(uint8 binlog_ver, const char* server_ver=0); - -#ifndef MYSQL_CLIENT -#ifdef HAVE_REPLICATION - int exec_event(struct st_relay_log_info* rli); -#endif /* HAVE_REPLICATION */ -#endif - Format_description_log_event(const char* buf, uint event_len, - const Format_description_log_event* description_event); - ~Format_description_log_event() { my_free((gptr)post_header_len, MYF(0)); } + const Format_description_log_event + *description_event); + ~Format_description_log_event() { my_free((uchar*)post_header_len, MYF(0)); } Log_event_type get_type_code() { return FORMAT_DESCRIPTION_EVENT;} #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); @@ -1140,7 +1417,15 @@ public: */ return FORMAT_DESCRIPTION_HEADER_LEN; } + void calc_server_version_split(); + +protected: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; @@ -1164,13 +1449,13 @@ public: {} #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif - Intvar_log_event(const char* buf, const Format_description_log_event* description_event); + Intvar_log_event(const char* buf, + const Format_description_log_event *description_event); ~Intvar_log_event() {} Log_event_type get_type_code() { return INTVAR_EVENT;} const char* get_var_type_name(); @@ -1179,6 +1464,13 @@ public: bool write(IO_CACHE* file); #endif bool is_valid() const { return 1; } + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; @@ -1205,13 +1497,13 @@ class Rand_log_event: public Log_event {} #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif - Rand_log_event(const char* buf, const Format_description_log_event* description_event); + Rand_log_event(const char* buf, + const Format_description_log_event *description_event); ~Rand_log_event() {} Log_event_type get_type_code() { return RAND_EVENT;} int get_data_size() { return 16; /* sizeof(ulonglong) * 2*/ } @@ -1219,6 +1511,13 @@ class Rand_log_event: public Log_event bool write(IO_CACHE* file); #endif bool is_valid() const { return 1; } + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; /***************************************************************************** @@ -1242,13 +1541,13 @@ class Xid_log_event: public Log_event Xid_log_event(THD* thd_arg, my_xid x): Log_event(thd_arg,0,0), xid(x) {} #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif - Xid_log_event(const char* buf, const Format_description_log_event* description_event); + Xid_log_event(const char* buf, + const Format_description_log_event *description_event); ~Xid_log_event() {} Log_event_type get_type_code() { return XID_EVENT;} int get_data_size() { return sizeof(xid); } @@ -1256,6 +1555,11 @@ class Xid_log_event: public Log_event bool write(IO_CACHE* file); #endif bool is_valid() const { return 1; } + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif }; /***************************************************************************** @@ -1285,18 +1589,25 @@ public: val_len(val_len_arg), type(type_arg), charset_number(charset_number_arg) { is_null= !val; } void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif - User_var_log_event(const char* buf, const Format_description_log_event* description_event); + User_var_log_event(const char* buf, + const Format_description_log_event *description_event); ~User_var_log_event() {} Log_event_type get_type_code() { return USER_VAR_EVENT;} #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); #endif bool is_valid() const { return 1; } + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; @@ -1311,17 +1622,33 @@ public: #ifndef MYSQL_CLIENT Stop_log_event() :Log_event() {} - int exec_event(struct st_relay_log_info* rli); #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif - Stop_log_event(const char* buf, const Format_description_log_event* description_event): + Stop_log_event(const char* buf, + const Format_description_log_event *description_event): Log_event(buf, description_event) {} ~Stop_log_event() {} Log_event_type get_type_code() { return STOP_EVENT;} bool is_valid() const { return 1; } + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli) + { + /* + Events from ourself should be skipped, but they should not + decrease the slave skip counter. + */ + if (this->server_id == ::server_id) + return Log_event::EVENT_SKIP_IGNORE; + else + return Log_event::EVENT_SKIP_NOT; + } +#endif }; /***************************************************************************** @@ -1343,15 +1670,14 @@ public: uint ident_len; uint flags; #ifndef MYSQL_CLIENT - Rotate_log_event(THD* thd_arg, const char* new_log_ident_arg, + Rotate_log_event(const char* new_log_ident_arg, uint ident_len_arg, ulonglong pos_arg, uint flags); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Rotate_log_event(const char* buf, uint event_len, @@ -1359,7 +1685,7 @@ public: ~Rotate_log_event() { if (flags & DUP_NAME) - my_free((gptr) new_log_ident, MYF(MY_ALLOW_ZERO_PTR)); + my_free((uchar*) new_log_ident, MYF(MY_ALLOW_ZERO_PTR)); } Log_event_type get_type_code() { return ROTATE_EVENT;} int get_data_size() { return ident_len + ROTATE_HEADER_LEN;} @@ -1367,6 +1693,12 @@ public: #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); #endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif }; @@ -1401,11 +1733,11 @@ public: bool using_trans); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); - void print(FILE* file, PRINT_EVENT_INFO* print_event_info, bool enable_local); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info, + bool enable_local); #endif Create_file_log_event(const char* buf, uint event_len, @@ -1435,6 +1767,11 @@ public: */ bool write_base(IO_CACHE* file); #endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif }; @@ -1467,24 +1804,29 @@ public: Append_block_log_event(THD* thd, const char* db_arg, char* block_arg, uint block_len_arg, bool using_trans); #ifdef HAVE_REPLICATION - int exec_event(struct st_relay_log_info* rli); void pack_info(Protocol* protocol); virtual int get_create_or_append() const; #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Append_block_log_event(const char* buf, uint event_len, - const Format_description_log_event* description_event); + const Format_description_log_event + *description_event); ~Append_block_log_event() {} Log_event_type get_type_code() { return APPEND_BLOCK_EVENT;} int get_data_size() { return block_len + APPEND_BLOCK_HEADER_LEN ;} bool is_valid() const { return block != 0; } #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); -#endif const char* get_db() { return db; } +#endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif }; @@ -1504,11 +1846,11 @@ public: Delete_file_log_event(THD* thd, const char* db_arg, bool using_trans); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); - void print(FILE* file, PRINT_EVENT_INFO* print_event_info, bool enable_local); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info, + bool enable_local); #endif Delete_file_log_event(const char* buf, uint event_len, @@ -1519,8 +1861,13 @@ public: bool is_valid() const { return file_id != 0; } #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); -#endif const char* get_db() { return db; } +#endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif }; @@ -1540,22 +1887,27 @@ public: Execute_load_log_event(THD* thd, const char* db_arg, bool using_trans); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); #endif Execute_load_log_event(const char* buf, uint event_len, - const Format_description_log_event* description_event); + const Format_description_log_event + *description_event); ~Execute_load_log_event() {} Log_event_type get_type_code() { return EXEC_LOAD_EVENT;} int get_data_size() { return EXEC_LOAD_HEADER_LEN ;} bool is_valid() const { return file_id != 0; } #ifndef MYSQL_CLIENT bool write(IO_CACHE* file); -#endif const char* get_db() { return db; } +#endif + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif }; @@ -1581,7 +1933,8 @@ public: #endif /* HAVE_REPLICATION */ #endif Begin_load_query_log_event(const char* buf, uint event_len, - const Format_description_log_event* description_event); + const Format_description_log_event + *description_event); ~Begin_load_query_log_event() {} Log_event_type get_type_code() { return BEGIN_LOAD_QUERY_EVENT; } }; @@ -1625,16 +1978,16 @@ public: bool using_trans, bool suppress_use); #ifdef HAVE_REPLICATION void pack_info(Protocol* protocol); - int exec_event(struct st_relay_log_info* rli); #endif /* HAVE_REPLICATION */ #else - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); /* Prints the query as LOAD DATA LOCAL and with rewritten filename */ void print(FILE* file, PRINT_EVENT_INFO* print_event_info, const char *local_fname); #endif Execute_load_query_log_event(const char* buf, uint event_len, - const Format_description_log_event *description_event); + const Format_description_log_event + *description_event); ~Execute_load_query_log_event() {} Log_event_type get_type_code() { return EXECUTE_LOAD_QUERY_EVENT; } @@ -1644,7 +1997,12 @@ public: #ifndef MYSQL_CLIENT bool write_post_header_for_derived(IO_CACHE* file); #endif - }; + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif +}; #ifdef MYSQL_CLIENT @@ -1656,14 +2014,670 @@ public: Log_event's ctor, this way we can extract maximum information from the event's header (the unique ID for example). */ - Unknown_log_event(const char* buf, const Format_description_log_event* description_event): + Unknown_log_event(const char* buf, + const Format_description_log_event *description_event): Log_event(buf, description_event) {} ~Unknown_log_event() {} - void print(FILE* file, PRINT_EVENT_INFO* print_event_info= 0); + void print(FILE* file, PRINT_EVENT_INFO* print_event_info); Log_event_type get_type_code() { return UNKNOWN_EVENT;} bool is_valid() const { return 1; } }; #endif char *str_to_hex(char *to, const char *from, uint len); + +/***************************************************************************** + + Table map log event class + + Create a mapping from a (database name, table name) couple to a table + identifier (an integer number). + + ****************************************************************************/ +class Table_map_log_event : public Log_event +{ +public: + /* Constants */ + enum + { + TYPE_CODE = TABLE_MAP_EVENT + }; + + /** + Enumeration of the errors that can be returned. + */ + enum enum_error + { + ERR_OPEN_FAILURE = -1, /**< Failure to open table */ + ERR_OK = 0, /**< No error */ + ERR_TABLE_LIMIT_EXCEEDED = 1, /**< No more room for tables */ + ERR_OUT_OF_MEM = 2, /**< Out of memory */ + ERR_BAD_TABLE_DEF = 3, /**< Table definition does not match */ + ERR_RBR_TO_SBR = 4 /**< daisy-chanining RBR to SBR not allowed */ + }; + + enum enum_flag + { + /* + Nothing here right now, but the flags support is there in + preparation for changes that are coming. Need to add a + constant to make it compile under HP-UX: aCC does not like + empty enumerations. + */ + ENUM_FLAG_COUNT + }; + + typedef uint16 flag_set; + + /* Special constants representing sets of flags */ + enum + { + TM_NO_FLAGS = 0U + }; + + void set_flags(flag_set flag) { m_flags |= flag; } + void clear_flags(flag_set flag) { m_flags &= ~flag; } + flag_set get_flags(flag_set flag) const { return m_flags & flag; } + +#ifndef MYSQL_CLIENT + Table_map_log_event(THD *thd, TABLE *tbl, ulong tid, + bool is_transactional, uint16 flags); +#endif +#ifdef HAVE_REPLICATION + Table_map_log_event(const char *buf, uint event_len, + const Format_description_log_event *description_event); +#endif + + ~Table_map_log_event(); + + virtual Log_event_type get_type_code() { return TABLE_MAP_EVENT; } + virtual bool is_valid() const { return m_memory != NULL; /* we check malloc */ } + + virtual int get_data_size() { return m_data_size; } +#ifndef MYSQL_CLIENT + virtual int save_field_metadata(); + virtual bool write_data_header(IO_CACHE *file); + virtual bool write_data_body(IO_CACHE *file); + virtual const char *get_db() { return m_dbnam; } +#endif + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual void pack_info(Protocol *protocol); +#endif + +#ifdef MYSQL_CLIENT + virtual void print(FILE *file, PRINT_EVENT_INFO *print_event_info); +#endif + + +private: +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); +#endif + +#ifndef MYSQL_CLIENT + TABLE *m_table; +#endif + char const *m_dbnam; + size_t m_dblen; + char const *m_tblnam; + size_t m_tbllen; + ulong m_colcnt; + uchar *m_coltype; + + uchar *m_memory; + ulong m_table_id; + flag_set m_flags; + + size_t m_data_size; + + uchar *m_field_metadata; // buffer for field metadata + /* + The size of field metadata buffer set by calling save_field_metadata() + */ + ulong m_field_metadata_size; + uchar *m_null_bits; + uchar *m_meta_memory; +}; + + +/***************************************************************************** + + Row level log event class. + + Common base class for all row-containing log events. + + RESPONSIBILITIES + + Encode the common parts of all events containing rows, which are: + - Write data header and data body to an IO_CACHE. + - Provide an interface for adding an individual row to the event. + + ****************************************************************************/ + + +class Rows_log_event : public Log_event +{ +public: + /** + Enumeration of the errors that can be returned. + */ + enum enum_error + { + ERR_OPEN_FAILURE = -1, /**< Failure to open table */ + ERR_OK = 0, /**< No error */ + ERR_TABLE_LIMIT_EXCEEDED = 1, /**< No more room for tables */ + ERR_OUT_OF_MEM = 2, /**< Out of memory */ + ERR_BAD_TABLE_DEF = 3, /**< Table definition does not match */ + ERR_RBR_TO_SBR = 4 /**< daisy-chanining RBR to SBR not allowed */ + }; + + /* + These definitions allow you to combine the flags into an + appropriate flag set using the normal bitwise operators. The + implicit conversion from an enum-constant to an integer is + accepted by the compiler, which is then used to set the real set + of flags. + */ + enum enum_flag + { + /* Last event of a statement */ + STMT_END_F = (1U << 0), + + /* Value of the OPTION_NO_FOREIGN_KEY_CHECKS flag in thd->options */ + NO_FOREIGN_KEY_CHECKS_F = (1U << 1), + + /* Value of the OPTION_RELAXED_UNIQUE_CHECKS flag in thd->options */ + RELAXED_UNIQUE_CHECKS_F = (1U << 2), + + /** + Indicates that rows in this event are complete, that is contain + values for all columns of the table. + */ + COMPLETE_ROWS_F = (1U << 3) + }; + + typedef uint16 flag_set; + + /* Special constants representing sets of flags */ + enum + { + RLE_NO_FLAGS = 0U + }; + + virtual ~Rows_log_event(); + + void set_flags(flag_set flags_arg) { m_flags |= flags_arg; } + void clear_flags(flag_set flags_arg) { m_flags &= ~flags_arg; } + flag_set get_flags(flag_set flags_arg) const { return m_flags & flags_arg; } + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual void pack_info(Protocol *protocol); +#endif + +#ifdef MYSQL_CLIENT + /* not for direct call, each derived has its own ::print() */ + virtual void print(FILE *file, PRINT_EVENT_INFO *print_event_info)= 0; +#endif + +#ifndef MYSQL_CLIENT + int add_row_data(uchar *data, size_t length) + { + return do_add_row_data(data,length); + } +#endif + + /* Member functions to implement superclass interface */ + virtual int get_data_size(); + + MY_BITMAP const *get_cols() const { return &m_cols; } + size_t get_width() const { return m_width; } + ulong get_table_id() const { return m_table_id; } + +#ifndef MYSQL_CLIENT + virtual bool write_data_header(IO_CACHE *file); + virtual bool write_data_body(IO_CACHE *file); + virtual const char *get_db() { return m_table->s->db.str; } +#endif + /* + Check that malloc() succeeded in allocating memory for the rows + buffer and the COLS vector. Checking that an Update_rows_log_event + is valid is done in the Update_rows_log_event::is_valid() + function. + */ + virtual bool is_valid() const + { + return m_rows_buf && m_cols.bitmap; + } + + uint m_row_count; /* The number of rows added to the event */ + +protected: + /* + The constructors are protected since you're supposed to inherit + this class, not create instances of this class. + */ +#ifndef MYSQL_CLIENT + Rows_log_event(THD*, TABLE*, ulong table_id, + MY_BITMAP const *cols, bool is_transactional); +#endif + Rows_log_event(const char *row_data, uint event_len, + Log_event_type event_type, + const Format_description_log_event *description_event); + +#ifdef MYSQL_CLIENT + void print_helper(FILE *, PRINT_EVENT_INFO *, char const *const name); +#endif + +#ifndef MYSQL_CLIENT + virtual int do_add_row_data(uchar *data, size_t length); +#endif + +#ifndef MYSQL_CLIENT + TABLE *m_table; /* The table the rows belong to */ +#endif + ulong m_table_id; /* Table ID */ + MY_BITMAP m_cols; /* Bitmap denoting columns available */ + ulong m_width; /* The width of the columns bitmap */ + /* + Bitmap for columns available in the after image, if present. These + fields are only available for Update_rows events. Observe that the + width of both the before image COLS vector and the after image + COLS vector is the same: the number of columns of the table on the + master. + */ + MY_BITMAP m_cols_ai; + + ulong m_master_reclength; /* Length of record on master side */ + + /* Bit buffers in the same memory as the class */ + uint32 m_bitbuf[128/(sizeof(uint32)*8)]; + uint32 m_bitbuf_ai[128/(sizeof(uint32)*8)]; + + uchar *m_rows_buf; /* The rows in packed format */ + uchar *m_rows_cur; /* One-after the end of the data */ + uchar *m_rows_end; /* One-after the end of the allocated space */ + + flag_set m_flags; /* Flags for row-level events */ + + /* helper functions */ + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + const uchar *m_curr_row; /* Start of the row being processed */ + const uchar *m_curr_row_end; /* One-after the end of the current row */ + uchar *m_key; /* Buffer to keep key value during searches */ + + int find_row(const Relay_log_info *const); + int write_row(const Relay_log_info *const, const bool); + + // Unpack the current row into m_table->record[0] + int unpack_current_row(const Relay_log_info *const rli) + { + DBUG_ASSERT(m_table); + return ::unpack_row(rli, m_table, m_width, m_curr_row, &m_cols, + &m_curr_row_end, &m_master_reclength); + } +#endif + +private: + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); + virtual int do_update_pos(Relay_log_info *rli); + virtual enum_skip_reason do_shall_skip(Relay_log_info *rli); + + /* + Primitive to prepare for a sequence of row executions. + + DESCRIPTION + + Before doing a sequence of do_prepare_row() and do_exec_row() + calls, this member function should be called to prepare for the + entire sequence. Typically, this member function will allocate + space for any buffers that are needed for the two member + functions mentioned above. + + RETURN VALUE + + The member function will return 0 if all went OK, or a non-zero + error code otherwise. + */ + virtual + int do_before_row_operations(const Slave_reporting_capability *const log) = 0; + + /* + Primitive to clean up after a sequence of row executions. + + DESCRIPTION + + After doing a sequence of do_prepare_row() and do_exec_row(), + this member function should be called to clean up and release + any allocated buffers. + + The error argument, if non-zero, indicates an error which happened during + row processing before this function was called. In this case, even if + function is successful, it should return the error code given in the argument. + */ + virtual + int do_after_row_operations(const Slave_reporting_capability *const log, + int error) = 0; + + /* + Primitive to do the actual execution necessary for a row. + + DESCRIPTION + The member function will do the actual execution needed to handle a row. + The row is located at m_curr_row. When the function returns, + m_curr_row_end should point at the next row (one byte after the end + of the current row). + + RETURN VALUE + 0 if execution succeeded, 1 if execution failed. + + */ + virtual int do_exec_row(const Relay_log_info *const rli) = 0; +#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ + + friend class Old_rows_log_event; +}; + +/***************************************************************************** + + Write row log event class + + Log row insertions and updates. The event contain several + insert/update rows for a table. Note that each event contains only + rows for one table. + + ****************************************************************************/ +class Write_rows_log_event : public Rows_log_event +{ +public: + enum + { + /* Support interface to THD::binlog_prepare_pending_rows_event */ + TYPE_CODE = WRITE_ROWS_EVENT + }; + +#if !defined(MYSQL_CLIENT) + Write_rows_log_event(THD*, TABLE*, ulong table_id, + MY_BITMAP const *cols, bool is_transactional); +#endif +#ifdef HAVE_REPLICATION + Write_rows_log_event(const char *buf, uint event_len, + const Format_description_log_event *description_event); +#endif +#if !defined(MYSQL_CLIENT) + static bool binlog_row_logging_function(THD *thd, TABLE *table, + bool is_transactional, + MY_BITMAP *cols, + uint fields, + const uchar *before_record + __attribute__((unused)), + const uchar *after_record) + { + return thd->binlog_write_row(table, is_transactional, + cols, fields, after_record); + } +#endif + +private: + virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; } + +#ifdef MYSQL_CLIENT + void print(FILE *file, PRINT_EVENT_INFO *print_event_info); +#endif + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_before_row_operations(const Slave_reporting_capability *const); + virtual int do_after_row_operations(const Slave_reporting_capability *const,int); + virtual int do_exec_row(const Relay_log_info *const); +#endif +}; + + +/***************************************************************************** + + Update rows log event class + + Log row updates with a before image. The event contain several + update rows for a table. Note that each event contains only rows for + one table. + + Also note that the row data consists of pairs of row data: one row + for the old data and one row for the new data. + + ****************************************************************************/ +class Update_rows_log_event : public Rows_log_event +{ +public: + enum + { + /* Support interface to THD::binlog_prepare_pending_rows_event */ + TYPE_CODE = UPDATE_ROWS_EVENT + }; + +#ifndef MYSQL_CLIENT + Update_rows_log_event(THD*, TABLE*, ulong table_id, + MY_BITMAP const *cols_bi, + MY_BITMAP const *cols_ai, + bool is_transactional); + + Update_rows_log_event(THD*, TABLE*, ulong table_id, + MY_BITMAP const *cols, + bool is_transactional); + + void init(MY_BITMAP const *cols); +#endif + + virtual ~Update_rows_log_event(); + +#ifdef HAVE_REPLICATION + Update_rows_log_event(const char *buf, uint event_len, + const Format_description_log_event *description_event); +#endif + +#if !defined(MYSQL_CLIENT) + static bool binlog_row_logging_function(THD *thd, TABLE *table, + bool is_transactional, + MY_BITMAP *cols, + uint fields, + const uchar *before_record, + const uchar *after_record) + { + return thd->binlog_update_row(table, is_transactional, + cols, fields, before_record, after_record); + } +#endif + + virtual bool is_valid() const + { + return Rows_log_event::is_valid() && m_cols_ai.bitmap; + } + +protected: + virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; } + +#ifdef MYSQL_CLIENT + void print(FILE *file, PRINT_EVENT_INFO *print_event_info); +#endif + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_before_row_operations(const Slave_reporting_capability *const); + virtual int do_after_row_operations(const Slave_reporting_capability *const,int); + virtual int do_exec_row(const Relay_log_info *const); +#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ +}; + +/***************************************************************************** + + Delete rows log event class. + + Log row deletions. The event contain several delete rows for a + table. Note that each event contains only rows for one table. + + RESPONSIBILITIES + + - Act as a container for rows that has been deleted on the master + and should be deleted on the slave. + + COLLABORATION + + Row_writer + Create the event and add rows to the event. + Row_reader + Extract the rows from the event. + + ****************************************************************************/ +class Delete_rows_log_event : public Rows_log_event +{ +public: + enum + { + /* Support interface to THD::binlog_prepare_pending_rows_event */ + TYPE_CODE = DELETE_ROWS_EVENT + }; + +#ifndef MYSQL_CLIENT + Delete_rows_log_event(THD*, TABLE*, ulong, + MY_BITMAP const *cols, bool is_transactional); +#endif +#ifdef HAVE_REPLICATION + Delete_rows_log_event(const char *buf, uint event_len, + const Format_description_log_event *description_event); +#endif +#if !defined(MYSQL_CLIENT) + static bool binlog_row_logging_function(THD *thd, TABLE *table, + bool is_transactional, + MY_BITMAP *cols, + uint fields, + const uchar *before_record, + const uchar *after_record + __attribute__((unused))) + { + return thd->binlog_delete_row(table, is_transactional, + cols, fields, before_record); + } +#endif + +protected: + virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; } + +#ifdef MYSQL_CLIENT + void print(FILE *file, PRINT_EVENT_INFO *print_event_info); +#endif + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_before_row_operations(const Slave_reporting_capability *const); + virtual int do_after_row_operations(const Slave_reporting_capability *const,int); + virtual int do_exec_row(const Relay_log_info *const); +#endif +}; + + +#include "log_event_old.h" + +/** + Class representing an incident, an occurance out of the ordinary, + that happened on the master. + + The event is used to inform the slave that something out of the + ordinary happened on the master that might cause the database to be + in an inconsistent state. + + <table id="IncidentFormat"> + <caption>Incident event format</caption> + <tr> + <th>Symbol</th> + <th>Size<br>(bytes)</th> + <th>Description</th> + </tr> + <tr> + <td>INCIDENT</td> + <td align="right">2</td> + <td>Incident number as an unsigned integer</td> + </tr> + <tr> + <td>MSGLEN</td> + <td align="right">1</td> + <td>Message length as an unsigned integer</td> + </tr> + <tr> + <td>MESSAGE</td> + <td align="right">MSGLEN</td> + <td>The message, if present. Not null terminated.</td> + </tr> + </table> + */ +class Incident_log_event : public Log_event { +public: +#ifndef MYSQL_CLIENT + Incident_log_event(THD *thd_arg, Incident incident) + : Log_event(thd_arg, 0, FALSE), m_incident(incident) + { + DBUG_ENTER("Incident_log_event::Incident_log_event"); + DBUG_PRINT("enter", ("m_incident: %d", m_incident)); + m_message.str= NULL; /* Just as a precaution */ + m_message.length= 0; + DBUG_VOID_RETURN; + } + + Incident_log_event(THD *thd_arg, Incident incident, LEX_STRING const msg) + : Log_event(thd_arg, 0, FALSE), m_incident(incident) + { + DBUG_ENTER("Incident_log_event::Incident_log_event"); + DBUG_PRINT("enter", ("m_incident: %d", m_incident)); + m_message= msg; + DBUG_VOID_RETURN; + } +#endif + +#ifndef MYSQL_CLIENT + void pack_info(Protocol*); +#endif + + Incident_log_event(const char *buf, uint event_len, + const Format_description_log_event *descr_event); + + virtual ~Incident_log_event(); + +#ifdef MYSQL_CLIENT + virtual void print(FILE *file, PRINT_EVENT_INFO *print_event_info); +#endif + +#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) + virtual int do_apply_event(Relay_log_info const *rli); +#endif + + virtual bool write_data_header(IO_CACHE *file); + virtual bool write_data_body(IO_CACHE *file); + + virtual Log_event_type get_type_code() { return INCIDENT_EVENT; } + + virtual bool is_valid() const { return 1; } + virtual int get_data_size() { + return INCIDENT_HEADER_LEN + 1 + m_message.length; + } + +private: + const char *description() const; + + Incident m_incident; + LEX_STRING m_message; +}; + +static inline bool copy_event_cache_to_file_and_reinit(IO_CACHE *cache, + FILE *file) +{ + return + my_b_copy_to_file(cache, file) || + reinit_io_cache(cache, WRITE_CACHE, 0, FALSE, TRUE); +} + +/** + @} (end of group Replication) +*/ + #endif /* _log_event_h */ |