Boost.log

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本文链接：http://www.cnblogs.com/wlsandwho/p/4666418.html

耻辱墙：http://www.cnblogs.com/wlsandwho/p/4206472.html

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也不知道写的对不对，目前能用就好。

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自动生成文件名、设置过滤等级、设置日志格式、输出到完备日志和重要日志

（部分功能没用到就不删除了，也不碍事。）

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日志格式：

00000001    2015-07-22_09:14:35.771886    <fatal>        王林森原创 未经许可请勿转载 侵权必究

（  行号　）　（　　　　　 时间戳　　　 　　）　（等级）　　（　　  　　　 　内容　　　　　　　　）

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头文件

 #include <iostream>
 #include <boost/locale/generator.hpp>
 #include <boost/date_time/posix_time/posix_time_types.hpp>
 #include <boost/log/common.hpp>
 #include <boost/log/expressions.hpp>
 #include <boost/log/utility/setup/file.hpp>
 #include <boost/log/utility/setup/console.hpp>
 #include <boost/log/utility/setup/common_attributes.hpp>
 #include <boost/log/sources/logger.hpp>
 #include <boost/log/support/date_time.hpp>
 #include <cstddef>
 #include <string>
 #include <fstream>
 #include <iomanip>
 #include <boost/smart_ptr/shared_ptr.hpp>
 #include <boost/smart_ptr/make_shared_object.hpp>
 #include <boost/date_time/posix_time/posix_time.hpp>
 #include <boost/log/core.hpp>
 #include <boost/log/attributes.hpp>
 #include <boost/log/sources/basic_logger.hpp>
 #include <boost/log/sources/severity_logger.hpp>
 #include <boost/log/sources/record_ostream.hpp>
 #include <boost/log/sinks/sync_frontend.hpp>
 #include <boost/log/sinks/text_ostream_backend.hpp>
 #include <boost/log/attributes/scoped_attribute.hpp>
 #include <boost/log/expressions/formatters/date_time.hpp>
 #include <boost/log/sinks/text_file_backend.hpp>
 #include <boost/log/sources/global_logger_storage.hpp>

 namespace logging = boost::log;
 namespace sinks = boost::log::sinks;
 namespace attrs = boost::log::attributes;
 namespace src = boost::log::sources;
 namespace expr = boost::log::expressions;
 namespace keywords = boost::log::keywords;

 enum severity_level
 {
     normal,
     message,
     alarm,
     error,
     fatal
 };

 template< typename CharT, typename TraitsT >
 inline std::basic_ostream< CharT, TraitsT >& operator<< (std::basic_ostream< CharT, TraitsT >& strm, severity_level lvl)
 {
     static const char* const str[] =
     {
         "normal",
         "message",
         "alarm",
         "error",
         "fatal"
     };
     if (static_cast< std::size_t >(lvl) < (sizeof(str) / sizeof(*str)))
         strm << str[lvl];
     else
         strm << static_cast< int >(lvl);
     return strm;
 }

 BOOST_LOG_ATTRIBUTE_KEYWORD(severity, "Severity", severity_level)
 BOOST_LOG_ATTRIBUTE_KEYWORD(timestamp, "TimeStamp", boost::posix_time::ptime)
 BOOST_LOG_ATTRIBUTE_KEYWORD(line_id, "LineID", unsigned int)
 BOOST_LOG_ATTRIBUTE_KEYWORD(tag_attr, "Tag", std::string)
 BOOST_LOG_ATTRIBUTE_KEYWORD(timeline, "Timeline", attrs::timer::value_type)

 void init_logging();

实现文件

 void CHTCollectorDlg::init_logging()
 {
     CString strFileName=m_strLogLocation+TEXT("\\WLS_%Y-%m-%d_FULL.log");

     std::locale::global(std::locale("chs"));

     typedef sinks::synchronous_sink< sinks::text_file_backend > text_sink;

     boost::shared_ptr< text_sink > sink = boost::make_shared< text_sink >(  keywords::open_mode=std::ios::app,
                                                                             keywords::file_name =strFileName,
                                                                             keywords::rotation_size =  * *  * ,
                                                                             keywords::time_based_rotation = sinks::file::rotation_at_time_point(, , )
                                                                             );
     sink->set_formatter(expr::stream
                             << std::dec << std::setw() << std::setfill('') << line_id << std::dec << std::setfill(' ')
                             <<"\t"<<expr::format_date_time< boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d_%H:%M:%S.%f")
                             << "\t<"<< severity.or_default(normal)
                             << ">\t\t"<<expr::if_(expr::has_attr(tag_attr))
                                                 [
                                                     expr::stream << "[" << tag_attr << "]"
                                                 ]
                             << expr::if_(expr::has_attr(timeline))
                                         [
                                             expr::stream << "[>"<< timeline << "<]"
                                         ]
                             << expr::message);

     sink->locked_backend()->auto_flush(true);

     logging::core::get()->add_sink(sink);

     //////////////////////////////////////////////////////////////////////////
     strFileName=m_strLogLocation+TEXT("WLS_%Y-%m-%d_IMPORTANT.log");
     sink = boost::make_shared< text_sink >(    keywords::open_mode=std::ios::app,
         keywords::file_name =strFileName,
         keywords::rotation_size =  * *  * ,
         keywords::time_based_rotation = sinks::file::rotation_at_time_point(, , )
         );
     sink->set_formatter(expr::stream
         << std::dec << std::setw() << std::setfill('') << line_id << std::dec << std::setfill(' ')
         <<"\t"<<expr::format_date_time< boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d_%H:%M:%S.%f")
         << "\t<"<< severity.or_default(normal)
         << ">\t\t"<<expr::if_(expr::has_attr(tag_attr))
         　　　　　　　　　　[
             　　　　　　　　　　expr::stream << "[" << tag_attr << "]"
         　　　　　　　　　　]
     　　<< expr::if_(expr::has_attr(timeline))
         　　　　[
             　　　　expr::stream << "[>"<< timeline << "<]"
         　　　　]
     　　<< expr::message);

     sink->locked_backend()->auto_flush(true);
     sink->set_filter(severity>=alarm);
     logging::core::get()->add_sink(sink);

     logging::add_common_attributes();
 }

用法

 AddRecord(severity_level sl,CString str)
 {
     src::wseverity_logger< severity_level > slg;
     BOOST_LOG_SEV(slg, sl) <<str.GetBuffer(str.GetLength());
 }