MySQL 8.2.0
Source Code Documentation
syslog_plugin.h
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1/*
2 Copyright (c) 2018, 2023, 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.
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10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
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13 separately licensed software that they have included with MySQL.
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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 for more details.
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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
25#ifndef MYSQL_HARNESS_SYSLOG_PLUGIN_INCLUDED
26#define MYSQL_HARNESS_SYSLOG_PLUGIN_INCLUDED
27
30#include "mysql/harness/plugin.h"
31
32#include <syslog.h>
33#include <cstring>
34
35constexpr const char *kSyslogPluginName = "syslog";
36extern "C" {
37extern mysql_harness::Plugin harness_plugin_syslog;
38}
39
42
43/**
44 * Unix-based systems specific logging handler(sink) that writes the logs to the
45 * syslog.
46 */
48 public:
49 static constexpr unsigned kMaxIdentSize = 100;
50
51 SyslogHandler(bool format_messages = true, LogLevel level = LogLevel::kNotSet)
52 : mysql_harness::logging::Handler(format_messages, level,
53 LogTimestampPrecision::kSec) {}
54 ~SyslogHandler() override { close(); }
55
56 void open(const std::string &ident) noexcept {
57 std::strncpy(ident_, ident.c_str(), kMaxIdentSize);
58 ident_[kMaxIdentSize - 1] = '\0';
59 openlog(ident_, LOG_CONS | LOG_NDELAY, LOG_DAEMON);
60 }
61
62 void close() const noexcept { closelog(); }
63
64 // does nothing for the syslog handler
65 void reopen(const std::string /*dst*/) override {}
66
67 private:
68 void do_log(const mysql_harness::logging::Record &record) noexcept override {
69 syslog(log_level_to_syslog(record.level), "%s", record.message.c_str());
70 }
71
72 static int log_level_to_syslog(const LogLevel level) noexcept {
73 switch (level) {
74 case LogLevel::kFatal:
75 return LOG_EMERG;
76 case LogLevel::kError:
77 return LOG_ERR;
78 case LogLevel::kWarning:
79 return LOG_WARNING;
80 case LogLevel::kInfo:
81 case LogLevel::kNote:
82 case LogLevel::kSystem:
83 // Let loglevels NOTE and SYSTEM map to LOG_INFO
84 return LOG_INFO;
85 default: // kDebug
86 assert(level == LogLevel::kDebug);
87 return LOG_DEBUG;
88 }
89 }
90
92};
93
94#endif // MYSQL_HARNESS_SYSLOG_PLUGIN_INCLUDED
Unix-based systems specific logging handler(sink) that writes the logs to the syslog.
Definition: syslog_plugin.h:47
SyslogHandler(bool format_messages=true, LogLevel level=LogLevel::kNotSet)
Definition: syslog_plugin.h:51
static constexpr unsigned kMaxIdentSize
Definition: syslog_plugin.h:49
void open(const std::string &ident) noexcept
Definition: syslog_plugin.h:56
void close() const noexcept
Definition: syslog_plugin.h:62
static int log_level_to_syslog(const LogLevel level) noexcept
Definition: syslog_plugin.h:72
~SyslogHandler() override
Definition: syslog_plugin.h:54
char ident_[kMaxIdentSize]
Definition: syslog_plugin.h:91
void reopen(const std::string) override
Request to reopen underlying log sink.
Definition: syslog_plugin.h:65
void do_log(const mysql_harness::logging::Record &record) noexcept override
Log message handler primitive.
Definition: syslog_plugin.h:68
Base class for log message handler.
Definition: handler.h:49
Logging interface for using and extending the logging subsystem.
static int record
Definition: mysqltest.cc:194
LogLevel
Log level values.
Definition: logging.h:95
LogTimestampPrecision
Log timestamp precision values.
Definition: logging.h:160
Definition: common.h:41
Definition: binlog.h:114
Log record containing information collected by the logging system.
Definition: logging.h:182
mysql_harness::Plugin harness_plugin_syslog
Definition: syslog_plugin.cc:32
constexpr const char * kSyslogPluginName
Definition: syslog_plugin.h:35