1 /*
2 * Copyright Andrey Semashev 2007 - 2015.
3 * Distributed under the Boost Software License, Version 1.0.
4 * (See accompanying file LICENSE_1_0.txt or copy at
5 * http://www.boost.org/LICENSE_1_0.txt)
6 */
7 /*!
8 * \file main.cpp
9 * \author Andrey Semashev
10 * \date 07.03.2009
11 *
12 * \brief An example of logging to a syslog server (syslogd, for example).
13 *
14 * The example shows how to initialize logging to a remote syslog server.
15 * The code creates a sink that will send syslog messages to local port 514.
16 */
17
18 // #define BOOST_LOG_DYN_LINK 1
19
20 #include <boost/config.hpp>
21 #if !defined(BOOST_WINDOWS)
22 #define BOOST_LOG_USE_NATIVE_SYSLOG
23 #endif
24
25 #include <stdexcept>
26 #include <string>
27 #include <iostream>
28 #include <boost/smart_ptr/shared_ptr.hpp>
29
30 #include <boost/log/common.hpp>
31 #include <boost/log/expressions.hpp>
32 #include <boost/log/attributes.hpp>
33 #include <boost/log/sinks/sync_frontend.hpp>
34 #include <boost/log/sinks/syslog_backend.hpp>
35
36 namespace logging = boost::log;
37 namespace attrs = boost::log::attributes;
38 namespace src = boost::log::sources;
39 namespace sinks = boost::log::sinks;
40 namespace expr = boost::log::expressions;
41 namespace keywords = boost::log::keywords;
42
43 using boost::shared_ptr;
44
45 //! Define application-specific severity levels
46 enum severity_levels
47 {
48 normal,
49 warning,
50 error
51 };
52
main(int argc,char * argv[])53 int main(int argc, char* argv[])
54 {
55 try
56 {
57 // Create a syslog sink
58 shared_ptr< sinks::synchronous_sink< sinks::syslog_backend > > sink(
59 new sinks::synchronous_sink< sinks::syslog_backend >());
60
61 sink->set_formatter
62 (
63 expr::format("syslog.exe: %1%: %2%")
64 % expr::attr< unsigned int >("RecordID")
65 % expr::smessage
66 );
67
68 // We'll have to map our custom levels to the syslog levels
69 sinks::syslog::custom_severity_mapping< severity_levels > mapping("Severity");
70 mapping[normal] = sinks::syslog::info;
71 mapping[warning] = sinks::syslog::warning;
72 mapping[error] = sinks::syslog::critical;
73
74 sink->locked_backend()->set_severity_mapper(mapping);
75
76 #if !defined(BOOST_LOG_NO_ASIO)
77 // Set the remote address to sent syslog messages to
78 sink->locked_backend()->set_target_address("localhost");
79 #endif
80
81 // Add the sink to the core
82 logging::core::get()->add_sink(sink);
83
84 // Add some attributes too
85 logging::core::get()->add_global_attribute("RecordID", attrs::counter< unsigned int >());
86
87 // Do some logging
88 src::severity_logger< severity_levels > lg(keywords::severity = normal);
89 BOOST_LOG_SEV(lg, normal) << "A syslog record with normal level";
90 BOOST_LOG_SEV(lg, warning) << "A syslog record with warning level";
91 BOOST_LOG_SEV(lg, error) << "A syslog record with error level";
92
93 return 0;
94 }
95 catch (std::exception& e)
96 {
97 std::cout << "FAILURE: " << e.what() << std::endl;
98 return 1;
99 }
100 }
101