我尝试为我的 boost 多文件记录器设置动态日期，以将每天的日志文件分隔在不同的文件中，例如：' log___2018-07-10__172.17.18.199.log '。
我不想在代码中的每个函数中设置日期BOOST_LOG_SCOPED_THREAD_TAG！
我希望 boost 核心记录器做到这一点，我只想在全局属性中设置本地时钟，但我不知道该怎么做。这是我的代码：
#include <boost/shared_ptr.hpp>
#include <boost/thread/thread.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/log/expressions.hpp>
#include <boost/log/sources/severity_logger.hpp>
#include <boost/log/common.hpp>
#include <boost/log/attributes.hpp>
#include <boost/log/sources/logger.hpp>
#include <boost/log/sinks/sync_frontend.hpp>
#include <boost/log/sinks/text_multifile_backend.hpp>
#include <boost/log/support/date_time.hpp>
enum SeverityLevel {
TRACE,
DEBUG,
WARNING,
INFO,
ERROR,
FATAL
};
enum
{
THREAD_COUNT = 5,
LOG_RECORDS_TO_WRITE = 10
};
boost::log::sources::severity_logger_mt< SeverityLevel > myLogger;
#define LOG_ERROR BOOST_LOG_SEV(myLogger, ERROR)
#define LOG_FATAL BOOST_LOG_SEV(myLogger, FATAL)
#define LOG_INFO BOOST_LOG_SEV(myLogger, INFO)
#define LOG_WARNING BOOST_LOG_SEV(myLogger, WARNING)
#define LOG_DEBUG BOOST_LOG_SEV(myLogger, DEBUG)
#define LOG_TRACE BOOST_LOG_SEV(myLogger, TRACE)
// This function is executed in a separate thread
void thread_fooMain()
{
BOOST_LOG_NAMED_SCOPE("thread_fooMain");
for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
{
LOG_ERROR << "Log record " << i;
}
}
void thread_foo2()
{
BOOST_LOG_SCOPED_THREAD_TAG("TerminalIP", "172.17.18.102");
BOOST_LOG_NAMED_SCOPE("thread_fooMain");
for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
{
LOG_TRACE << "Log record " << i;
}
}
void thread_foo3()
{
BOOST_LOG_SCOPED_THREAD_TAG("TerminalIP", "172.17.18.103");
BOOST_LOG_NAMED_SCOPE("thread_fooMain");
for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
{
LOG_INFO << "Log record " << i;
}
}
void thread_foo4()
{
BOOST_LOG_SCOPED_THREAD_TAG("TerminalIP", "172.17.18.104");
BOOST_LOG_NAMED_SCOPE("thread_fooMain");
for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
{
LOG_INFO << "Log record " << i;
}
}
void thread_foo5()
{
BOOST_LOG_SCOPED_THREAD_TAG("TerminalIP", "172.17.18.105");
BOOST_LOG_NAMED_SCOPE("thread_fooMain");
for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
{
LOG_INFO << "Log record " << i;
}
}
BOOST_LOG_ATTRIBUTE_KEYWORD(severity, "Severity", SeverityLevel)
BOOST_LOG_ATTRIBUTE_KEYWORD(timestamp, "Timestamp", boost::posix_time::ptime)
BOOST_LOG_ATTRIBUTE_KEYWORD(dateStream, "DateStream", boost::posix_time::ptime)
BOOST_LOG_ATTRIBUTE_KEYWORD(thread_id, "ThreadID", boost::log::attributes::current_thread_id::value_type)
// The operator puts a human-friendly representation of the severity level to the stream
std::ostream & operator<< (std::ostream & strm, SeverityLevel level)
{
static const char* strings[] =
{
"TRACE",
"DEBUG",
"WARNING",
"INFO",
"ERROR",
"FATAL"
};
if (static_cast< std::size_t >(level) < sizeof(strings) / sizeof(*strings))
strm << strings[level];
else
strm << static_cast< int >(level);
return strm;
}
int main(int argc, char* argv[])
{
try
{
// Create a text file sink
typedef boost::log::sinks::synchronous_sink< boost::log::sinks::text_multifile_backend > file_sink;
boost::shared_ptr< file_sink > sink(new file_sink);
// Set up how the file names will be generated
sink->locked_backend()->set_file_name_composer(
boost::log::sinks::file::as_file_name_composer(
boost::log::expressions::stream <<
"log/log_" <<
boost::log::expressions::format_date_time(dateStream, "__%Y_%m_%d__") <<
boost::log::expressions::attr< std::string >("TerminalIP") <<
".log"
)
);
sink->set_formatter
(
boost::log::expressions::stream <<
boost::log::expressions::format_date_time< boost::posix_time::ptime >("TimeStamp", "[%Y/%m/%d %H:%M:%S.%f]") <<
"<" << severity << ">" <<
"[" << thread_id << "]:" <<
"<" << boost::log::expressions::format_named_scope("Scope", boost::log::keywords::format = "%n") << "> " <<
boost::log::expressions::smessage
);
// Add it to the core
boost::log::core::get()->add_sink(sink);
boost::log::core::get()->set_filter
(
severity >= WARNING
);
// Add some attributes too
boost::log::core::get()->add_global_attribute("TimeStamp", boost::log::attributes::local_clock());
boost::log::core::get()->add_global_attribute("DateStream", boost::log::attributes::local_clock());
boost::log::core::get()->add_global_attribute("Scope", boost::log::attributes::named_scope());
boost::log::core::get()->add_global_attribute("ThreadID", boost::log::attributes::current_thread_id());
// Create threads and make some logs
boost::thread_group threads;
threads.create_thread(&thread_fooMain);
threads.create_thread(&thread_foo2);
threads.create_thread(&thread_foo3);
threads.create_thread(&thread_foo4);
threads.create_thread(&thread_foo5);
threads.join_all();
return 0;
}
catch (std::exception& e)
{
std::cout << "FAILURE: " << e.what() << std::endl;
return 1;
}
}
但得到这个链接器错误：
ErrorC2664 'boost::log::v2s_mt_nt6::aux::light_function<void (boost::log::v2s_mt_nt6::basic_formatting_ostream<char,std::char_traits<char>,std::allocator<char>> &,const boost::posix_time::ptime &)>::result_type boost::log::v2s_mt_nt6::aux::light_function<void (boost::log::v2s_mt_nt6::basic_formatting_ostream<char,std::char_traits<char>,std::allocator<char>> &,const boost::posix_time::ptime &)>::operator ()(boost::log::v2s_mt_nt6::basic_formatting_ostream<char,std::char_traits<char>,std::allocator<char>> &,const boost::posix_time::ptime &) const':
cannot convert argument 1 from 'boost::log::v2s_mt_nt6::basic_formatting_ostream<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>>' to 'boost::log::v2s_mt_nt6::basic_formatting_ostream<char,std::char_traits<char>,std::allocator<char>> &' sample.boost.asio e:\programming\c++\boost libraries\boost_1_66_0\boost\log\utility\functional\bind.hpp 93
谁能向我解释为什么会这样？