mysql5/mysql-5.7.27/sql/ndb_log.cc

135 lines
3.3 KiB
C++

/*
Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "ndb_log.h"
// Use log.h until there is a plugin API which provides printing to error log
// without polluting the message with it's own hardcoded string and without
// need to pass in a MYSQL_PLUGIN pointer. Presumably 'my_plugin_log_service'
// can be extended with a my_log_message(level, prefix, message, ...) function
#include "log.h"
/*
Print message to MySQL Server's error log(s)
@param loglevel Selects the loglevel used when
printing the message to log.
@param prefix Prefix to be used in front of the message in
addition to "NDB" i.e "NDB <prefix>:"
@param[in] fmt printf-like format string
@param[in] ap Arguments
*/
void
ndb_log_print(enum ndb_log_loglevel loglevel,
const char* prefix, const char* fmt, va_list args)
{
DBUG_ASSERT(fmt);
// Assemble the message
char msg_buf[512];
(void)my_vsnprintf(msg_buf, sizeof(msg_buf), fmt, args);
// Print message to MySQL error log
switch (loglevel)
{
case NDB_LOG_ERROR_LEVEL:
if (prefix)
sql_print_error("NDB %s: %s", prefix, msg_buf);
else
sql_print_error("NDB: %s", msg_buf);
break;
case NDB_LOG_WARNING_LEVEL:
if (prefix)
sql_print_warning("NDB %s: %s", prefix, msg_buf);
else
sql_print_warning("NDB: %s", msg_buf);
break;
case NDB_LOG_INFORMATION_LEVEL:
if (prefix)
sql_print_information("NDB %s: %s", prefix, msg_buf);
else
sql_print_information("NDB: %s", msg_buf);
break;
}
}
void
ndb_log_info(const char* fmt, ...)
{
DBUG_ASSERT(fmt);
va_list args;
va_start(args, fmt);
ndb_log_print(NDB_LOG_INFORMATION_LEVEL, NULL, fmt, args);
va_end(args);
}
void
ndb_log_warning(const char* fmt, ...)
{
DBUG_ASSERT(fmt);
va_list args;
va_start(args, fmt);
ndb_log_print(NDB_LOG_WARNING_LEVEL, NULL, fmt, args);
va_end(args);
}
void
ndb_log_error(const char* fmt, ...)
{
DBUG_ASSERT(fmt);
va_list args;
va_start(args, fmt);
ndb_log_print(NDB_LOG_ERROR_LEVEL, NULL, fmt, args);
va_end(args);
}
// the verbose level is currently controlled by "ndb_extra_logging"
extern ulong opt_ndb_extra_logging;
unsigned
ndb_log_get_verbose_level(void)
{
return opt_ndb_extra_logging;
}
void
ndb_log_verbose(unsigned verbose_level, const char* fmt, ...)
{
DBUG_ASSERT(fmt);
// Print message only if verbose level is set high enough
if (ndb_log_get_verbose_level() < verbose_level)
return;
va_list args;
va_start(args, fmt);
ndb_log_print(NDB_LOG_INFORMATION_LEVEL, NULL, fmt, args);
va_end(args);
}