testmain.cpp

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#include <stdio.h>
#include "log4cpp/Portability.hh"
#ifdef LOG4CPP_HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <iostream>
#include "log4cpp/Category.hh"
#include "log4cpp/Appender.hh"
#include "log4cpp/FileAppender.hh"
#include "log4cpp/OstreamAppender.hh"
#ifdef LOG4CPP_HAVE_SYSLOG
#include "log4cpp/SyslogAppender.hh"
#endif
#include "log4cpp/Layout.hh"
#include "log4cpp/BasicLayout.hh"
#include "log4cpp/Priority.hh"
#include "log4cpp/NDC.hh"

int main(int argc, char** argv) {
        log4cpp::Appender* appender;
#ifdef LOG4CPP_HAVE_SYSLOG
        log4cpp::SyslogAppender* syslogAppender;

        syslogAppender = new log4cpp::SyslogAppender("syslog", "log4cpp");
#else
        log4cpp::Appender* syslogAppender;

        syslogAppender = new log4cpp::OstreamAppender("syslogdummy", &std::cout);
#endif

        if (argc < 2) {
                appender = new log4cpp::OstreamAppender("default", &std::cout);
        } else {
                appender = new log4cpp::FileAppender("default", argv[1]);
        }

        syslogAppender->setLayout(new log4cpp::BasicLayout());
        appender->setLayout(new log4cpp::BasicLayout());

        log4cpp::Category& root = log4cpp::Category::getRoot();
        root.addAppender(syslogAppender);
        root.setPriority(log4cpp::Priority::ERROR);

        log4cpp::Category& sub1 = log4cpp::Category::getInstance(std::string("sub1"));
        sub1.addAppender(appender);

        log4cpp::Category& sub2 = log4cpp::Category::getInstance(std::string("sub1.sub2"));

        log4cpp::NDC::push(std::string("ndc1"));

        std::cout << " root prio = " << root.getPriority() << std::endl;
        std::cout << " sub1 prio = " << sub1.getPriority() << std::endl;
        std::cout << " sub2 prio = " << sub2.getPriority() << std::endl;

        root.error("root error");
        root.warn("root warn");
        sub1.error("sub1 error");
        sub1.warn("sub1 warn");
        sub2.error("sub2 error");
        sub2.warn("sub2 warn");

        sub1.setPriority(log4cpp::Priority::INFO);
        std::cout << " root prio = " << root.getPriority() << std::endl;
        std::cout << " sub1 prio = " << sub1.getPriority() << std::endl;
        std::cout << " sub2 prio = " << sub2.getPriority() << std::endl;

        std::cout << "priority info" << std::endl;
        root.error("root error");
        root.warn("root warn");
        sub1.error("sub1 error");
        sub1.warn("sub1 warn");
        sub2.error("sub2 error");
        sub2.warn("sub2 warn");

        sub2.warnStream() << "streamed warn";

        sub2 << log4cpp::Priority::WARN << "warn2" << " warn3" 
             << log4cpp::eol << " warn4";

        {
                for(int i = 0; i < 10000; i++) {
                        char ndc2[20];
                        sprintf(ndc2, "i=%d", i);
                        log4cpp::NDC::push(ndc2);
                        sub1.info("%s%d", "i = ", i);
                        if ((i % 10) == 0) {
                                sub1.log(log4cpp::Priority::NOTICE, "reopen log");
                                if (log4cpp::Appender::reopenAll()) {
                                        sub1.info("log reopened");
                                } else {
                                        sub1.warn("could not reopen log");
                                }
                        }
#ifndef WIN32
                        sleep(1);
#endif
                        log4cpp::NDC::pop();
                }
        }

        return 0;
}