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WL #3153 "Split logs" post-review fixes (after andrei's review)

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sql/log.cc:
  post-review fixes:
  * split log_type to log_state and log_type
  * rename log_type to log_table_type where appropriate (to avoid confusion)
  * merge MYSQL_SLOW_LOG and MYSQL_GENERAL_LOG to MYSQL_QUERY_LOG
sql/log.h:
  post-review fixes:
  * move last_time and reopen_file() to MYSQL_QUERY_LOG from the base class
This commit is contained in:
unknown
2006-06-05 05:34:34 +04:00
parent 51e0c5187b
commit b092d16c88
2 changed files with 83 additions and 99 deletions
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140
sql/log.cc
View File

@@ -120,8 +120,8 @@ handlerton binlog_hton = {
SYNOPSIS
open_log_table()
log_type type of the log table to open: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
log_table_type type of the log table to open: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
DESCRIPTION
@@ -136,14 +136,14 @@ handlerton binlog_hton = {
TRUE - error occured
*/
bool Log_to_csv_event_handler::open_log_table(uint log_type)
bool Log_to_csv_event_handler::open_log_table(uint log_table_type)
{
THD *log_thd, *curr= current_thd;
TABLE_LIST *table;
bool error= FALSE;
DBUG_ENTER("open_log_table");
switch (log_type) {
switch (log_table_type) {
case QUERY_LOG_GENERAL:
log_thd= general_log_thd;
table= &general_log;
@@ -254,8 +254,8 @@ Log_to_csv_event_handler::~Log_to_csv_event_handler()
SYNOPSIS
reopen_log_table()
log_type type of the log table to open: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
log_table_type type of the log table to open: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
DESCRIPTION
@@ -272,12 +272,12 @@ Log_to_csv_event_handler::~Log_to_csv_event_handler()
TRUE - open_log_table() returned an error
*/
bool Log_to_csv_event_handler::reopen_log_table(uint log_type)
bool Log_to_csv_event_handler::reopen_log_table(uint log_table_type)
{
/* don't open the log table, if it wasn't enabled during startup */
if (!logger.is_log_tables_initialized)
return FALSE;
return open_log_table(log_type);
return open_log_table(log_table_type);
}
void Log_to_csv_event_handler::cleanup()
@@ -613,9 +613,9 @@ void LOGGER::cleanup_end()
}
void LOGGER::close_log_table(uint log_type, bool lock_in_use)
void LOGGER::close_log_table(uint log_table_type, bool lock_in_use)
{
table_log_handler->close_log_table(log_type, lock_in_use);
table_log_handler->close_log_table(log_table_type, lock_in_use);
}
@@ -655,9 +655,9 @@ void LOGGER::init_log_tables()
}
bool LOGGER::reopen_log_table(uint log_type)
bool LOGGER::reopen_log_table(uint log_table_type)
{
return table_log_handler->reopen_log_table(log_type);
return table_log_handler->reopen_log_table(log_table_type);
}
@@ -992,9 +992,9 @@ int LOGGER::set_handlers(uint error_log_printer,
SYNOPSIS
close_log_table()
log_type type of the log table to close: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
lock_in_use Set to TRUE if the caller owns LOCK_open. FALSE otherwise.
log_table_type type of the log table to close: QUERY_LOG_GENERAL
or QUERY_LOG_SLOW
lock_in_use Set to TRUE if the caller owns LOCK_open. FALSE otherwise.
DESCRIPTION
@@ -1004,7 +1004,7 @@ int LOGGER::set_handlers(uint error_log_printer,
*/
void Log_to_csv_event_handler::
close_log_table(uint log_type, bool lock_in_use)
close_log_table(uint log_table_type, bool lock_in_use)
{
THD *log_thd, *curr= current_thd;
TABLE_LIST *table;
@@ -1012,7 +1012,7 @@ void Log_to_csv_event_handler::
if (!logger.is_log_tables_initialized)
return; /* do nothing */
switch (log_type) {
switch (log_table_type) {
case QUERY_LOG_GENERAL:
log_thd= general_log_thd;
table= &general_log;
@@ -1382,7 +1382,7 @@ static int find_uniq_filename(char *name)
void MYSQL_LOG::init(enum_log_type log_type_arg,
enum cache_type io_cache_type_arg)
enum cache_type io_cache_type_arg)
{
DBUG_ENTER("MYSQL_LOG::init");
log_type= log_type_arg;
@@ -1452,8 +1452,7 @@ bool MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
((log_type == LOG_BIN) ? MY_WAIT_IF_FULL : 0))))
goto err;
switch (log_type) {
case LOG_NORMAL:
if (log_type == LOG_NORMAL)
{
char *end;
int len=my_snprintf(buff, sizeof(buff), "%s, Version: %s. "
@@ -1474,14 +1473,9 @@ bool MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
if (my_b_write(&log_file, (byte*) buff, (uint) (end-buff)) ||
flush_io_cache(&log_file))
goto err;
break;
}
case LOG_CLOSED: // Impossible
case LOG_TO_BE_OPENED:
DBUG_ASSERT(1);
break;
}
log_state= LOG_OPENED;
DBUG_RETURN(0);
err:
@@ -1493,13 +1487,13 @@ shutdown the MySQL server and restart it.", name, errno);
my_close(file, MYF(0));
end_io_cache(&log_file);
safeFree(name);
log_type= LOG_CLOSED;
log_state= LOG_CLOSED;
DBUG_RETURN(1);
}
MYSQL_LOG::MYSQL_LOG()
: name(0), log_type(LOG_CLOSED), write_error(FALSE),
inited(FALSE), last_time(0)
: name(0), log_type(LOG_UNKNOWN), log_state(LOG_CLOSED), write_error(FALSE),
inited(FALSE)
{
/*
We don't want to initialize LOCK_Log here as such initialization depends on
@@ -1535,7 +1529,7 @@ void MYSQL_LOG::close(uint exiting)
{ // One can't set log_type here!
DBUG_ENTER("MYSQL_LOG::close");
DBUG_PRINT("enter",("exiting: %d", (int) exiting));
if (log_type != LOG_CLOSED && log_type != LOG_TO_BE_OPENED)
if (log_state == LOG_OPENED)
{
end_io_cache(&log_file);
@@ -1552,7 +1546,7 @@ void MYSQL_LOG::close(uint exiting)
}
}
log_type= (exiting & LOG_CLOSE_TO_BE_OPENED) ? LOG_TO_BE_OPENED : LOG_CLOSED;
log_state= (exiting & LOG_CLOSE_TO_BE_OPENED) ? LOG_TO_BE_OPENED : LOG_CLOSED;
safeFree(name);
DBUG_VOID_RETURN;
}
@@ -1572,6 +1566,24 @@ void MYSQL_LOG::cleanup()
}
int MYSQL_LOG::generate_new_name(char *new_name, const char *log_name)
{
fn_format(new_name, log_name, mysql_data_home, "", 4);
if (log_type == LOG_BIN)
{
if (!fn_ext(log_name)[0])
{
if (find_uniq_filename(new_name))
{
sql_print_error(ER(ER_NO_UNIQUE_LOGFILE), log_name);
return 1;
}
}
}
return 0;
}
/*
Reopen the log file
@@ -1584,9 +1596,8 @@ void MYSQL_LOG::cleanup()
*/
void MYSQL_LOG::reopen_file()
void MYSQL_QUERY_LOG::reopen_file()
{
enum_log_type save_log_type;
char *save_name;
DBUG_ENTER("MYSQL_LOG::reopen_file");
@@ -1599,15 +1610,14 @@ void MYSQL_LOG::reopen_file()
pthread_mutex_lock(&LOCK_log);
save_name= name;
save_log_type= log_type;
name= 0; // Don't free name
close(LOG_CLOSE_TO_BE_OPENED);
/*
Note that at this point, log_type != LOG_CLOSED (important for is_open()).
Note that at this point, log_state != LOG_CLOSED (important for is_open()).
*/
open(save_name, save_log_type, 0, io_cache_type);
open(save_name, log_type, 0, io_cache_type);
my_free(save_name, MYF(0));
pthread_mutex_unlock(&LOCK_log);
@@ -1616,24 +1626,6 @@ void MYSQL_LOG::reopen_file()
}
int MYSQL_LOG::generate_new_name(char *new_name, const char *log_name)
{
fn_format(new_name,log_name,mysql_data_home,"",4);
if (log_type != LOG_NORMAL)
{
if (!fn_ext(log_name)[0])
{
if (find_uniq_filename(new_name))
{
sql_print_error(ER(ER_NO_UNIQUE_LOGFILE), log_name);
return 1;
}
}
}
return 0;
}
/*
Write a command to traditional general log file
@@ -1659,10 +1651,10 @@ int MYSQL_LOG::generate_new_name(char *new_name, const char *log_name)
TRUE - error occured
*/
bool MYSQL_GENERAL_LOG::write(time_t event_time, const char *user_host,
uint user_host_len, int thread_id,
const char *command_type, uint command_type_len,
const char *sql_text, uint sql_text_len)
bool MYSQL_QUERY_LOG::write(time_t event_time, const char *user_host,
uint user_host_len, int thread_id,
const char *command_type, uint command_type_len,
const char *sql_text, uint sql_text_len)
{
char buff[32];
uint length= 0;
@@ -1755,14 +1747,14 @@ err:
TRUE - error occured
*/
bool MYSQL_SLOW_LOG::write(THD *thd, time_t current_time,
time_t query_start_arg, const char *user_host,
uint user_host_len, longlong query_time,
longlong lock_time, bool is_command,
const char *sql_text, uint sql_text_len)
bool MYSQL_QUERY_LOG::write(THD *thd, time_t current_time,
time_t query_start_arg, const char *user_host,
uint user_host_len, longlong query_time,
longlong lock_time, bool is_command,
const char *sql_text, uint sql_text_len)
{
bool error= 0;
DBUG_ENTER("MYSQL_SLOW_LOG::write");
DBUG_ENTER("MYSQL_QUERY_LOG::write");
if (!is_open())
DBUG_RETURN(0);
@@ -2015,7 +2007,6 @@ bool MYSQL_BIN_LOG::open(const char *log_name,
DBUG_ENTER("MYSQL_BIN_LOG::open");
DBUG_PRINT("enter",("log_type: %d",(int) log_type_arg));
last_time= 0;
write_error=0;
/* open the main log file */
@@ -2119,6 +2110,8 @@ bool MYSQL_BIN_LOG::open(const char *log_name,
goto err;
}
}
log_state= LOG_OPENED;
DBUG_RETURN(0);
err:
@@ -2131,7 +2124,7 @@ shutdown the MySQL server and restart it.", name, errno);
end_io_cache(&log_file);
end_io_cache(&index_file);
safeFree(name);
log_type= LOG_CLOSED;
log_state= LOG_CLOSED;
DBUG_RETURN(1);
}
@@ -2350,7 +2343,6 @@ bool MYSQL_BIN_LOG::reset_logs(THD* thd)
LOG_INFO linfo;
bool error=0;
const char* save_name;
enum_log_type save_log_type;
DBUG_ENTER("reset_logs");
ha_reset_logs(thd);
@@ -2372,7 +2364,6 @@ bool MYSQL_BIN_LOG::reset_logs(THD* thd)
/* Save variables so that we can reopen the log */
save_name=name;
name=0; // Protect against free
save_log_type=log_type;
close(LOG_CLOSE_TO_BE_OPENED);
/* First delete all old log files */
@@ -2396,8 +2387,7 @@ bool MYSQL_BIN_LOG::reset_logs(THD* thd)
if (!thd->slave_thread)
need_start_event=1;
if (!open_index_file(index_file_name, 0))
open(save_name, save_log_type, 0,
io_cache_type, no_auto_events, max_size, 0);
open(save_name, log_type, 0, io_cache_type, no_auto_events, max_size, 0);
my_free((gptr) save_name, MYF(0));
err:
@@ -2753,7 +2743,6 @@ void MYSQL_BIN_LOG::new_file_without_locking()
void MYSQL_BIN_LOG::new_file_impl(bool need_lock)
{
char new_name[FN_REFLEN], *new_name_ptr, *old_name;
enum_log_type save_log_type;
DBUG_ENTER("MYSQL_BIN_LOG::new_file_impl");
if (!is_open())
@@ -2821,12 +2810,11 @@ void MYSQL_BIN_LOG::new_file_impl(bool need_lock)
signal_update();
}
old_name=name;
save_log_type=log_type;
name=0; // Don't free name
close(LOG_CLOSE_TO_BE_OPENED);
/*
Note that at this point, log_type != LOG_CLOSED (important for is_open()).
Note that at this point, log_state != LOG_CLOSED (important for is_open()).
*/
/*
@@ -2838,7 +2826,7 @@ void MYSQL_BIN_LOG::new_file_impl(bool need_lock)
trigger temp tables deletion on slaves.
*/
open(old_name, save_log_type, new_name_ptr,
open(old_name, log_type, new_name_ptr,
io_cache_type, no_auto_events, max_size, 1);
my_free(old_name,MYF(0));
@@ -3543,7 +3531,7 @@ void MYSQL_BIN_LOG::close(uint exiting)
{ // One can't set log_type here!
DBUG_ENTER("MYSQL_BIN_LOG::close");
DBUG_PRINT("enter",("exiting: %d", (int) exiting));
if (log_type != LOG_CLOSED && log_type != LOG_TO_BE_OPENED)
if (log_state == LOG_OPENED)
{
#ifdef HAVE_REPLICATION
if (log_type == LOG_BIN && !no_auto_events &&
@@ -3582,7 +3570,7 @@ void MYSQL_BIN_LOG::close(uint exiting)
sql_print_error(ER(ER_ERROR_ON_WRITE), index_file_name, errno);
}
}
log_type= (exiting & LOG_CLOSE_TO_BE_OPENED) ? LOG_TO_BE_OPENED : LOG_CLOSED;
log_state= (exiting & LOG_CLOSE_TO_BE_OPENED) ? LOG_TO_BE_OPENED : LOG_CLOSED;
safeFree(name);
DBUG_VOID_RETURN;
}

42
sql/log.h
View File

@@ -147,7 +147,8 @@ typedef struct st_log_info
class Log_event;
class Rows_log_event;
enum enum_log_type { LOG_CLOSED, LOG_TO_BE_OPENED, LOG_NORMAL, LOG_BIN};
enum enum_log_type { LOG_UNKNOWN, LOG_NORMAL, LOG_BIN };
enum enum_log_state { LOG_OPENED, LOG_CLOSED, LOG_TO_BE_OPENED };
/*
TODO use mmap instead of IO_CACHE for binlog
@@ -160,7 +161,6 @@ public:
MYSQL_LOG();
void init_pthread_objects();
void cleanup();
void reopen_file();
bool open(const char *log_name,
enum_log_type log_type,
const char *new_name,
@@ -168,7 +168,7 @@ public:
void init(enum_log_type log_type_arg,
enum cache_type io_cache_type_arg);
void close(uint exiting);
inline bool is_open() { return log_type != LOG_CLOSED; }
inline bool is_open() { return log_state != LOG_CLOSED; }
const char *generate_name(const char *log_name, const char *suffix,
bool strip_ext, char *buff);
int generate_new_name(char *new_name, const char *log_name);
@@ -180,33 +180,21 @@ public:
char time_buff[20], db[NAME_LEN + 1];
bool write_error, inited;
IO_CACHE log_file;
volatile enum_log_type log_type;
enum_log_type log_type;
volatile enum_log_state log_state;
enum cache_type io_cache_type;
time_t last_time;
friend class Log_event;
};
class MYSQL_GENERAL_LOG: public MYSQL_LOG
class MYSQL_QUERY_LOG: public MYSQL_LOG
{
public:
MYSQL_GENERAL_LOG() {} /* get rid of gcc warning */
MYSQL_QUERY_LOG() : last_time(0) {}
void reopen_file();
bool write(time_t event_time, const char *user_host,
uint user_host_len, int thread_id,
const char *command_type, uint command_type_len,
const char *sql_text, uint sql_text_len);
bool open_query_log(const char *log_name)
{
char buf[FN_REFLEN];
return open(generate_name(log_name, ".log", 0, buf), LOG_NORMAL, 0,
WRITE_CACHE);
}
};
class MYSQL_SLOW_LOG: public MYSQL_LOG
{
public:
MYSQL_SLOW_LOG() {} /* get rid of gcc warning */
bool write(THD *thd, time_t current_time, time_t query_start_arg,
const char *user_host, uint user_host_len,
longlong query_time, longlong lock_time, bool is_command,
@@ -217,6 +205,14 @@ public:
return open(generate_name(log_name, "-slow.log", 0, buf), LOG_NORMAL, 0,
WRITE_CACHE);
}
bool open_query_log(const char *log_name)
{
char buf[FN_REFLEN];
return open(generate_name(log_name, ".log", 0, buf), LOG_NORMAL, 0,
WRITE_CACHE);
}
private:
time_t last_time;
};
class MYSQL_BIN_LOG: public TC_LOG, private MYSQL_LOG
@@ -269,6 +265,7 @@ class MYSQL_BIN_LOG: public TC_LOG, private MYSQL_LOG
public:
MYSQL_LOG::generate_name;
MYSQL_LOG::is_open;
/*
These describe the log's format. This is used only for relay logs.
_for_exec is used by the SQL thread, _for_queue by the I/O thread. It's
@@ -371,7 +368,6 @@ public:
int find_next_log(LOG_INFO* linfo, bool need_mutex);
int get_current_log(LOG_INFO* linfo);
uint next_file_id();
inline bool is_open() { return log_type != LOG_CLOSED; }
inline char* get_index_fname() { return index_file_name;}
inline char* get_log_fname() { return log_file_name; }
inline char* get_name() { return name; }
@@ -448,8 +444,8 @@ public:
class Log_to_file_event_handler: public Log_event_handler
{
MYSQL_GENERAL_LOG mysql_log;
MYSQL_SLOW_LOG mysql_slow_log;
MYSQL_QUERY_LOG mysql_log;
MYSQL_QUERY_LOG mysql_slow_log;
bool is_initialized;
public:
Log_to_file_event_handler(): is_initialized(FALSE)