Log to different file with log4cxx

Question

I want to log to different files in my code.

How can i do that in Log4cxx with xml configuration or programatically in code...

• Suppose that I have 1.k,

Answer 1

For dynamic components try this:

#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 
#include 
#include 


void func(int k) {
    std::string strName = "Log." + boost::lexical_cast(k);
    log4cxx::LoggerPtr log = log4cxx::Logger::getLogger(strName);
    LOG4CXX_DECODE_CHAR(fileName, strName + ".log");
    log4cxx::FileAppenderPtr appender(new log4cxx::FileAppender(new log4cxx::SimpleLayout, fileName, false));
    log->addAppender(appender);

    LOG4CXX_INFO(log, strName);

    log->removeAppender(appender);
}

int main(int argc, char * argv[]) {
    log4cxx::xml::DOMConfigurator::configure("trace.xml");
    if(log4cxx::Logger::getLogger("Log")->getAllAppenders().empty()) {
        std::cout << "failed to config log4cxx" << std::endl;
        return 1;
    }
    log4cxx::LoggerPtr log = log4cxx::Logger::getLogger("Log");

    boost::thread_group threadGroup;
    for(int k = 0; k != 3; ++k) {
        threadGroup.create_thread(boost::bind(func, k));
    }
    threadGroup.join_all();
    return 0;
}

with simple trace.xml