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Code Activity

LOAD DATA INFILE is now replicated properly, except for cleanup on

Browse Source 
Stop event and bugs the test suite could not catch
Did some big restructuring of binlog event classes - most important
change is that now each event class has exec_event method and one does
not need to modify slave core code to add a new event. Slave code is
now much smaller and easier to read



include/my_sys.h:
  pre_code and arg in IO_CACHE
mysql-test/r/rpl_log.result:
  updated result for LOAD DATA INFILE fix
mysys/mf_iocache.c:
  pre_close routine and arg pointer for callback magic
sql/log.cc:
  changed MYSQL_LOG so that write() method is for generic
  Log_event - removed redundant code
sql/log_event.cc:
  added classes for file events
  added exec_event() method to all classes
  restructured/cleaned up event classes
sql/log_event.h:
  added classes for file events
  added exec_event() method to all classes
  restructured/cleaned up event classes
sql/mf_iocache.cc:
  pre_close/arg
sql/mysqld.cc:
  added slave-load-tmpdir and old-rpl-compat options
sql/slave.cc:
  changed exec_event() to use Log_event::exec_event()
  some routines are now needed in log_event.cc and cannot be static/inline
  general cleanup
sql/slave.h:
  some routines are now extern because they are called from log_event.cc
sql/sql_class.cc:
  added slave_net
sql/sql_class.h:
  added slave_net to THD
  MYSQL_LOG::write now handles generic Log_event
sql/sql_load.cc:
  changes for new handling of LOAD DATA INFILE replication
sql/sql_repl.cc:
  added log_loaded_block() callback for IO_CACHE
sql/sql_repl.h:
  added structure to pass args to IO_CACHE callback from mysql_load
This commit is contained in:
unknown
2001-08-03 15:57:53 -06:00
parent 07ed42de31
commit 0dab9f40e1
15 changed files with 1307 additions and 703 deletions
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414
sql/log_event.h
View File

@ -42,6 +42,29 @@
*/
#define ST_SERVER_VER_LEN 50
#define DUMPFILE_FLAG 0x1
#define OPT_ENCLOSED_FLAG 0x2
#define REPLACE_FLAG 0x4
#define IGNORE_FLAG 0x8
#define FIELD_TERM_EMPTY 0x1
#define ENCLOSED_EMPTY 0x2
#define LINE_TERM_EMPTY 0x4
#define LINE_START_EMPTY 0x8
#define ESCAPED_EMPTY 0x10
struct sql_ex_info
{
char field_term;
char enclosed;
char line_term;
char line_start;
char escaped;
char opt_flags; // flags for the options
char empty_flags; // flags to indicate which of the terminating charact
} ;
/* Binary log consists of events. Each event has a fixed length header,
followed by possibly variable ( depending on the type of event) length
data body. The data body consists of an optional fixed length segment
@ -49,13 +72,17 @@
comments below for the format specifics
*/
/* event-specific post-header sizes */
#define LOG_EVENT_HEADER_LEN 19
#define QUERY_HEADER_LEN (4 + 4 + 1 + 2)
#define LOAD_HEADER_LEN (4 + 4 + 4 + 1 +1 + 4)
#define LOAD_HEADER_LEN (4 + 4 + 4 + 1 +1 + 4+sizeof(struct sql_ex_info))
#define START_HEADER_LEN (2 + ST_SERVER_VER_LEN + 4)
#define ROTATE_HEADER_LEN 8
#define CREATE_FILE_HEADER_LEN 6
#define CREATE_FILE_HEADER_LEN 4
#define APPEND_BLOCK_HEADER_LEN 4
#define EXEC_LOAD_HEADER_LEN 4
#define DELETE_FILE_HEADER_LEN 4
/* event header offsets */
@ -98,6 +125,7 @@
#define L_DB_LEN_OFFSET 12
#define L_TBL_LEN_OFFSET 13
#define L_NUM_FIELDS_OFFSET 14
#define L_SQL_EX_OFFSET 18
#define L_DATA_OFFSET LOAD_HEADER_LEN
/* Rotate event post-header */
@ -105,15 +133,26 @@
#define R_POS_OFFSET 0
#define R_IDENT_OFFSET 8
#define CF_DB_LEN_OFFSET 0
#define CF_TBL_LEN_OFFSET 1
#define CF_FILE_ID_OFFSET 2
#define CF_FILE_ID_OFFSET 0
#define CF_DATA_OFFSET CREATE_FILE_HEADER_LEN
#define AB_FILE_ID_OFFSET 0
#define AB_DATA_OFFSET APPEND_BLOCK_HEADER_LEN
#define EL_FILE_ID_OFFSET 0
#define DF_FILE_ID_OFFSET 0
#define QUERY_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN)
#define QUERY_DATA_OFFSET (LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN)
#define ROTATE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+ROTATE_HEADER_LEN)
#define LOAD_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN+sizeof(sql_ex_info))
#define CREATE_FILE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+CREATE_FILE_HEADER_LEN)
#define LOAD_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN)
#define CREATE_FILE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+\
+LOAD_HEADER_LEN+CREATE_FILE_HEADER_LEN)
#define DELETE_FILE_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+DELETE_FILE_HEADER_LEN)
#define EXEC_LOAD_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+EXEC_LOAD_HEADER_LEN)
#define APPEND_BLOCK_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+APPEND_BLOCK_HEADER_LEN)
#define BINLOG_MAGIC "\xfe\x62\x69\x6e"
@ -123,7 +162,7 @@
enum Log_event_type { START_EVENT = 1, QUERY_EVENT =2,
STOP_EVENT=3, ROTATE_EVENT = 4, INTVAR_EVENT=5,
LOAD_EVENT=6, SLAVE_EVENT=7, CREATE_FILE_EVENT=8,
APPEND_TO_FILE_EVENT=9, EXEC_LOAD_EVENT=10, DELETE_FILE_EVENT=11};
APPEND_BLOCK_EVENT=9, EXEC_LOAD_EVENT=10, DELETE_FILE_EVENT=11};
enum Int_event_type { INVALID_INT_EVENT = 0, LAST_INSERT_ID_EVENT = 1, INSERT_ID_EVENT = 2
};
@ -145,6 +184,11 @@ public:
uint32 server_id;
uint32 log_seq;
uint16 flags;
int cached_event_len;
char* temp_buf;
#ifndef MYSQL_CLIENT
THD* thd;
#endif
static void *operator new(size_t size)
{
@ -158,30 +202,32 @@ public:
int write(IO_CACHE* file);
int write_header(IO_CACHE* file);
virtual int write_data(IO_CACHE* file __attribute__((unused))) { return 0; }
virtual int write_data(IO_CACHE* file)
{ return write_data_header(file) || write_data_body(file); }
virtual int write_data_header(IO_CACHE* file __attribute__((unused)))
{ return 0; }
virtual int write_data_body(IO_CACHE* file __attribute__((unused)))
{ return 0; }
virtual Log_event_type get_type_code() = 0;
Log_event(time_t when_arg, ulong exec_time_arg = 0,
int valid_exec_time = 0, uint32 server_id_arg = 0,
uint32 log_seq_arg = 0, uint16 flags_arg = 0):
when(when_arg), exec_time(exec_time_arg),
log_seq(log_seq_arg),flags(0)
{
server_id = server_id_arg ? server_id_arg : (::server_id);
if(valid_exec_time)
flags |= LOG_EVENT_TIME_F;
}
Log_event(const char* buf)
{
when = uint4korr(buf);
server_id = uint4korr(buf + SERVER_ID_OFFSET);
log_seq = uint4korr(buf + LOG_SEQ_OFFSET);
flags = uint2korr(buf + FLAGS_OFFSET);
}
virtual ~Log_event() {}
virtual bool is_valid() = 0;
Log_event(const char* buf);
#ifndef MYSQL_CLIENT
Log_event(THD* thd_arg, uint16 flags_arg = 0);
#endif
virtual ~Log_event() { free_temp_buf();}
void register_temp_buf(char* buf) { temp_buf = buf; }
void free_temp_buf()
{
if (temp_buf)
{
my_free(temp_buf, MYF(0));
temp_buf = 0;
}
}
virtual int get_data_size() { return 0;}
virtual int get_data_body_offset() { return 0; }
int get_event_len() { return cached_event_len ? cached_event_len :
(cached_event_len = LOG_EVENT_HEADER_LEN + get_data_size()); }
#ifdef MYSQL_CLIENT
virtual void print(FILE* file, bool short_form = 0, char* last_db = 0) = 0;
void print_timestamp(FILE* file, time_t *ts = 0);
@ -200,6 +246,11 @@ public:
virtual void pack_info(String* packet);
int net_send(THD* thd, const char* log_name, ulong pos);
static void init_show_field_list(List<Item>* field_list);
virtual int exec_event(struct st_master_info* mi);
virtual const char* get_db()
{
return thd ? thd->db : 0;
}
#endif
};
@ -219,24 +270,13 @@ public:
uint16 error_code;
ulong thread_id;
#if !defined(MYSQL_CLIENT)
THD* thd;
bool cache_stmt;
Query_log_event(THD* thd_arg, const char* query_arg, bool using_trans=0):
Log_event(thd_arg->start_time,0,1,thd_arg->server_id,thd_arg->log_seq),
data_buf(0),
query(query_arg), db(thd_arg->db), q_len(thd_arg->query_length),
error_code(thd_arg->killed ? ER_SERVER_SHUTDOWN: thd_arg->net.last_errno),
thread_id(thd_arg->thread_id), thd(thd_arg),
cache_stmt(using_trans &&
(thd_arg->options & (OPTION_NOT_AUTO_COMMIT | OPTION_BEGIN)))
{
time_t end_time;
time(&end_time);
exec_time = (ulong) (end_time - thd->start_time);
db_len = (db) ? (uint32) strlen(db) : 0;
}
Query_log_event(THD* thd_arg, const char* query_arg,
bool using_trans=0);
const char* get_db() { return db; }
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
Query_log_event(const char* buf, int event_len);
@ -250,6 +290,7 @@ public:
Log_event_type get_type_code() { return QUERY_EVENT; }
int write(IO_CACHE* file);
int write_data(IO_CACHE* file); // returns 0 on success, -1 on error
bool is_valid() { return query != 0; }
int get_data_size()
{
return q_len + db_len + 2 +
@ -279,11 +320,13 @@ public:
#ifndef MYSQL_CLIENT
Slave_log_event(THD* thd_arg, struct st_master_info* mi);
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
Slave_log_event(const char* buf, int event_len);
~Slave_log_event();
int get_data_size();
bool is_valid() { return master_host != 0; }
Log_event_type get_type_code() { return SLAVE_EVENT; }
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
@ -292,34 +335,10 @@ public:
};
#define DUMPFILE_FLAG 0x1
#define OPT_ENCLOSED_FLAG 0x2
#define REPLACE_FLAG 0x4
#define IGNORE_FLAG 0x8
#define FIELD_TERM_EMPTY 0x1
#define ENCLOSED_EMPTY 0x2
#define LINE_TERM_EMPTY 0x4
#define LINE_START_EMPTY 0x8
#define ESCAPED_EMPTY 0x10
struct sql_ex_info
{
char field_term;
char enclosed;
char line_term;
char line_start;
char escaped;
char opt_flags; // flags for the options
char empty_flags; // flags to indicate which of the terminating charact
} ;
class Load_log_event: public Log_event
{
protected:
char* data_buf;
void copy_log_event(const char *buf, ulong data_len);
int copy_log_event(const char *buf, ulong event_len);
public:
ulong thread_id;
@ -330,96 +349,39 @@ public:
const char* fields;
const uchar* field_lens;
uint32 field_block_len;
const char* table_name;
const char* db;
const char* fname;
bool fname_null_term;
uint32 skip_lines;
sql_ex_info sql_ex;
#if !defined(MYSQL_CLIENT)
THD* thd;
String field_lens_buf;
String fields_buf;
Load_log_event(THD* thd, sql_exchange* ex, const char* table_name_arg,
List<Item>& fields_arg, enum enum_duplicates handle_dup ):
Log_event(thd->start_time),data_buf(0),thread_id(thd->thread_id),
num_fields(0),fields(0),field_lens(0),field_block_len(0),
table_name(table_name_arg),
db(thd->db),
fname(ex->file_name),
thd(thd)
{
time_t end_time;
time(&end_time);
exec_time = (ulong) (end_time - thd->start_time);
db_len = (db) ? (uint32) strlen(db) : 0;
table_name_len = (table_name) ? (uint32) strlen(table_name) : 0;
fname_len = (fname) ? (uint) strlen(fname) : 0;
sql_ex.field_term = (*ex->field_term)[0];
sql_ex.enclosed = (*ex->enclosed)[0];
sql_ex.line_term = (*ex->line_term)[0];
sql_ex.line_start = (*ex->line_start)[0];
sql_ex.escaped = (*ex->escaped)[0];
sql_ex.opt_flags = 0;
if(ex->dumpfile)
sql_ex.opt_flags |= DUMPFILE_FLAG;
if(ex->opt_enclosed)
sql_ex.opt_flags |= OPT_ENCLOSED_FLAG;
sql_ex.empty_flags = 0;
switch(handle_dup)
{
case DUP_IGNORE: sql_ex.opt_flags |= IGNORE_FLAG; break;
case DUP_REPLACE: sql_ex.opt_flags |= REPLACE_FLAG; break;
case DUP_ERROR: break;
}
if(!ex->field_term->length())
sql_ex.empty_flags |= FIELD_TERM_EMPTY;
if(!ex->enclosed->length())
sql_ex.empty_flags |= ENCLOSED_EMPTY;
if(!ex->line_term->length())
sql_ex.empty_flags |= LINE_TERM_EMPTY;
if(!ex->line_start->length())
sql_ex.empty_flags |= LINE_START_EMPTY;
if(!ex->escaped->length())
sql_ex.empty_flags |= ESCAPED_EMPTY;
skip_lines = ex->skip_lines;
List_iterator<Item> li(fields_arg);
field_lens_buf.length(0);
fields_buf.length(0);
Item* item;
while((item = li++))
{
num_fields++;
uchar len = (uchar) strlen(item->name);
field_block_len += len + 1;
fields_buf.append(item->name, len + 1);
field_lens_buf.append((char*)&len, 1);
}
field_lens = (const uchar*)field_lens_buf.ptr();
fields = fields_buf.ptr();
}
Load_log_event(THD* thd, sql_exchange* ex, const char* db_arg,
const char* table_name_arg,
List<Item>& fields_arg, enum enum_duplicates handle_dup);
void set_fields(List<Item> &fields_arg);
void pack_info(String* packet);
const char* get_db() { return db; }
int exec_event(struct st_master_info* mi)
{
return exec_event(thd->slave_net,mi);
}
int exec_event(NET* net, struct st_master_info* mi);
#endif
Load_log_event(const char* buf, int event_len);
~Load_log_event()
{
if (data_buf)
{
my_free((gptr) data_buf, MYF(0));
}
}
Log_event_type get_type_code() { return LOAD_EVENT; }
int write_data(IO_CACHE* file); // returns 0 on success, -1 on error
int write_data_header(IO_CACHE* file);
int write_data_body(IO_CACHE* file);
bool is_valid() { return table_name != 0; }
int get_data_size()
{
return table_name_len + 2 + db_len + 2 + fname_len
@ -427,9 +389,10 @@ public:
+ 4 // exec_time
+ 4 // skip_lines
+ 4 // field block len
+ sizeof(sql_ex) + field_block_len + num_fields*sizeof(uchar) ;
+ sizeof(sql_ex) + field_block_len + num_fields;
;
}
int get_data_body_offset() { return LOAD_EVENT_OVERHEAD; }
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
@ -443,23 +406,25 @@ public:
uint32 created;
uint16 binlog_version;
char server_version[ST_SERVER_VER_LEN];
Start_log_event() :Log_event(time(NULL)),binlog_version(BINLOG_VERSION)
#ifndef MYSQL_CLIENT
Start_log_event() :Log_event((THD*)0),binlog_version(BINLOG_VERSION)
{
created = (uint32) when;
memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
#endif
Start_log_event(const char* buf);
~Start_log_event() {}
Log_event_type get_type_code() { return START_EVENT;}
int write_data(IO_CACHE* file);
bool is_valid() { return 1; }
int get_data_size()
{
return START_HEADER_LEN;
}
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
@ -471,17 +436,21 @@ class Intvar_log_event: public Log_event
public:
ulonglong val;
uchar type;
Intvar_log_event(uchar type_arg, ulonglong val_arg)
:Log_event(time(NULL)),val(val_arg),type(type_arg)
#ifndef MYSQL_CLIENT
Intvar_log_event(THD* thd_arg,uchar type_arg, ulonglong val_arg)
:Log_event(thd_arg),val(val_arg),type(type_arg)
{}
#endif
Intvar_log_event(const char* buf);
~Intvar_log_event() {}
Log_event_type get_type_code() { return INTVAR_EVENT;}
const char* get_var_type_name();
int get_data_size() { return sizeof(type) + sizeof(val);}
int write_data(IO_CACHE* file);
bool is_valid() { return 1; }
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
#ifdef MYSQL_CLIENT
@ -492,15 +461,21 @@ public:
class Stop_log_event: public Log_event
{
public:
Stop_log_event() :Log_event(time(NULL))
#ifndef MYSQL_CLIENT
Stop_log_event() :Log_event((THD*)0)
{}
#endif
Stop_log_event(const char* buf):Log_event(buf)
{
}
~Stop_log_event() {}
Log_event_type get_type_code() { return STOP_EVENT;}
bool is_valid() { return 1; }
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
int exec_event(struct st_master_info* mi);
#endif
};
@ -511,16 +486,16 @@ public:
uchar ident_len;
ulonglong pos;
bool alloced;
Rotate_log_event(const char* new_log_ident_arg, uint ident_len_arg = 0,
ulonglong pos_arg = 4) :
Log_event(time(NULL)),
#ifndef MYSQL_CLIENT
Rotate_log_event(THD* thd_arg, const char* new_log_ident_arg,
uint ident_len_arg = 0,ulonglong pos_arg = 4) :
Log_event(thd_arg),
new_log_ident(new_log_ident_arg),
ident_len(ident_len_arg ? ident_len_arg :
(uint) strlen(new_log_ident_arg)), pos(pos_arg),
alloced(0)
{}
#endif
Rotate_log_event(const char* buf, int event_len);
~Rotate_log_event()
{
@ -529,40 +504,109 @@ public:
}
Log_event_type get_type_code() { return ROTATE_EVENT;}
int get_data_size() { return ident_len + ROTATE_HEADER_LEN;}
bool is_valid() { return new_log_ident != 0; }
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
};
/* the classes below are for the new LOAD DATA INFILE logging */
class Create_file_log_event: public Load_log_event
{
protected:
// pretend we are Load event, so we can write out just
// our Load part - used on the slave when writing event out to
// SQL_LOAD-*.info file
bool fake_base;
public:
char* block;
uint block_len;
uint file_id;
#ifndef MYSQL_CLIENT
Create_file_log_event(THD* thd, sql_exchange* ex, const char* db_arg,
const char* table_name_arg,
List<Item>& fields_arg, enum enum_duplicates handle_dup,
char* block_arg, uint block_len_arg);
#endif
Create_file_log_event(const char* buf, int event_len);
~Create_file_log_event()
{
}
Log_event_type get_type_code() { return fake_base ? LOAD_EVENT :
CREATE_FILE_EVENT;}
int get_data_size() { return fake_base ? Load_log_event::get_data_size() :
Load_log_event::get_data_size() +
4 + 1 + block_len;}
int get_data_body_offset() { return fake_base ? LOAD_EVENT_OVERHEAD:
LOAD_EVENT_OVERHEAD + CREATE_FILE_HEADER_LEN; }
bool is_valid() { return block != 0; }
int write_data_header(IO_CACHE* file);
int write_data_body(IO_CACHE* file);
int write_base(IO_CACHE* file); // cut out Create_file extentions and
// write it as Load event - used on the slave
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
};
class Append_block_log_event: public Log_event
{
public:
char* block;
uint block_len;
uint file_id;
#ifndef MYSQL_CLIENT
Append_block_log_event(THD* thd, char* block_arg,
uint block_len_arg);
int exec_event(struct st_master_info* mi);
#endif
Append_block_log_event(const char* buf, int event_len);
~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() { return block != 0; }
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
#endif
};
/* the classes below are for the new LOAD DATA INFILE logging */
class Create_file_log_event: public Log_event
class Delete_file_log_event: public Log_event
{
public:
char* db;
char* tbl_name;
uint db_len;
uint tbl_name_len;
char* block;
uint block_len;
uint file_id;
#ifndef MYSQL_CLIENT
Create_file_log_event(THD* thd, TABLE_LIST * table, char* block_arg,
uint block_len_arg);
#ifndef MYSQL_CLIENT
Delete_file_log_event(THD* thd);
#endif
Create_file_log_event(const char* buf, int event_len);
~Create_file_log_event()
Delete_file_log_event(const char* buf, int event_len);
~Delete_file_log_event()
{
}
Log_event_type get_type_code() { return CREATE_FILE_EVENT;}
int get_data_size() { return tbl_name_len + block_len +
CREATE_FILE_HEADER_LEN ;}
Log_event_type get_type_code() { return DELETE_FILE_EVENT;}
int get_data_size() { return DELETE_FILE_HEADER_LEN ;}
bool is_valid() { return file_id != 0; }
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
@ -570,6 +614,34 @@ public:
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
};
class Execute_load_log_event: public Log_event
{
public:
uint file_id;
#ifndef MYSQL_CLIENT
Execute_load_log_event(THD* thd);
#endif
Execute_load_log_event(const char* buf, int event_len);
~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() { return file_id != 0; }
int write_data(IO_CACHE* file);
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
#endif
};