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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 | #include <stdexcept> | |
9 | #include <string> | |
10 | #include <iostream> | |
11 | #include <boost/smart_ptr/shared_ptr.hpp> | |
12 | #include <boost/lambda/lambda.hpp> | |
13 | #include <boost/date_time/posix_time/posix_time.hpp> | |
14 | ||
15 | #include <boost/log/common.hpp> | |
16 | #include <boost/log/expressions.hpp> | |
17 | #include <boost/log/attributes.hpp> | |
18 | #include <boost/log/sinks.hpp> | |
19 | #include <boost/log/sources/logger.hpp> | |
20 | ||
21 | namespace logging = boost::log; | |
22 | namespace attrs = boost::log::attributes; | |
23 | namespace src = boost::log::sources; | |
24 | namespace sinks = boost::log::sinks; | |
25 | namespace expr = boost::log::expressions; | |
26 | namespace keywords = boost::log::keywords; | |
27 | ||
28 | typedef sinks::synchronous_sink< sinks::text_file_backend > file_sink; | |
29 | ||
30 | //[ example_sinks_xml_file_collecting | |
31 | void init_file_collecting(boost::shared_ptr< file_sink > sink) | |
32 | { | |
33 | sink->locked_backend()->set_file_collector(sinks::file::make_collector( | |
34 | keywords::target = "logs", /*< the target directory >*/ | |
35 | keywords::max_size = 16 * 1024 * 1024, /*< maximum total size of the stored files, in bytes >*/ | |
36 | keywords::min_free_space = 100 * 1024 * 1024, /*< minimum free space on the drive, in bytes >*/ | |
37 | keywords::max_files = 512 /*< maximum number of stored files >*/ | |
38 | )); | |
39 | } | |
40 | //] | |
41 | ||
42 | #if 0 | |
43 | //[ example_sinks_xml_file | |
44 | // Complete file sink type | |
45 | typedef sinks::synchronous_sink< sinks::text_file_backend > file_sink; | |
46 | ||
47 | void write_header(sinks::text_file_backend::stream_type& file) | |
48 | { | |
49 | file << "<?xml version=\"1.0\"?>\n<log>\n"; | |
50 | } | |
51 | ||
52 | void write_footer(sinks::text_file_backend::stream_type& file) | |
53 | { | |
54 | file << "</log>\n"; | |
55 | } | |
56 | ||
57 | void init_logging() | |
58 | { | |
59 | // Create a text file sink | |
60 | boost::shared_ptr< file_sink > sink(new file_sink( | |
61 | keywords::file_name = "%Y%m%d_%H%M%S_%5N.xml", /*< the resulting file name pattern >*/ | |
62 | keywords::rotation_size = 16384 /*< rotation size, in characters >*/ | |
63 | )); | |
64 | ||
65 | sink->set_formatter | |
66 | ( | |
67 | expr::format("\t<record id=\"%1%\" timestamp=\"%2%\">%3%</record>") | |
68 | % expr::attr< unsigned int >("RecordID") | |
69 | % expr::attr< boost::posix_time::ptime >("TimeStamp") | |
70 | % expr::xml_decor[ expr::stream << expr::smessage ] /*< the log message has to be decorated, if it contains special characters >*/ | |
71 | ); | |
72 | ||
73 | // Set header and footer writing functors | |
74 | sink->locked_backend()->set_open_handler(&write_header); | |
75 | sink->locked_backend()->set_close_handler(&write_footer); | |
76 | ||
77 | // Add the sink to the core | |
78 | logging::core::get()->add_sink(sink); | |
79 | } | |
80 | //] | |
81 | #endif | |
82 | ||
83 | //[ example_sinks_xml_file_final | |
84 | void init_logging() | |
85 | { | |
86 | // Create a text file sink | |
87 | boost::shared_ptr< file_sink > sink(new file_sink( | |
88 | keywords::file_name = "%Y%m%d_%H%M%S_%5N.xml", | |
89 | keywords::rotation_size = 16384 | |
90 | )); | |
91 | ||
92 | // Set up where the rotated files will be stored | |
93 | init_file_collecting(sink); | |
94 | ||
95 | // Upon restart, scan the directory for files matching the file_name pattern | |
96 | sink->locked_backend()->scan_for_files(); | |
97 | ||
98 | sink->set_formatter | |
99 | ( | |
100 | expr::format("\t<record id=\"%1%\" timestamp=\"%2%\">%3%</record>") | |
101 | % expr::attr< unsigned int >("RecordID") | |
102 | % expr::attr< boost::posix_time::ptime >("TimeStamp") | |
103 | % expr::xml_decor[ expr::stream << expr::smessage ] | |
104 | ); | |
105 | ||
106 | // Set header and footer writing functors | |
107 | namespace bll = boost::lambda; | |
108 | ||
109 | sink->locked_backend()->set_open_handler | |
110 | ( | |
111 | bll::_1 << "<?xml version=\"1.0\"?>\n<log>\n" | |
112 | ); | |
113 | sink->locked_backend()->set_close_handler | |
114 | ( | |
115 | bll::_1 << "</log>\n" | |
116 | ); | |
117 | ||
118 | // Add the sink to the core | |
119 | logging::core::get()->add_sink(sink); | |
120 | } | |
121 | //] | |
122 | ||
123 | enum { LOG_RECORDS_TO_WRITE = 2000 }; | |
124 | ||
125 | int main(int argc, char* argv[]) | |
126 | { | |
127 | try | |
128 | { | |
129 | // Initialize logging library | |
130 | init_logging(); | |
131 | ||
132 | // And also add some attributes | |
133 | logging::core::get()->add_global_attribute("TimeStamp", attrs::local_clock()); | |
134 | logging::core::get()->add_global_attribute("RecordID", attrs::counter< unsigned int >()); | |
135 | ||
136 | // Do some logging | |
137 | src::logger lg; | |
138 | for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i) | |
139 | { | |
140 | BOOST_LOG(lg) << "XML log record " << i; | |
141 | } | |
142 | ||
143 | // Test that XML character decoration works | |
144 | BOOST_LOG(lg) << "Special XML characters: &, <, >, \", '"; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | catch (std::exception& e) | |
149 | { | |
150 | std::cout << "FAILURE: " << e.what() << std::endl; | |
151 | return 1; | |
152 | } | |
153 | } |