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//
// This file is part of Easylogging++ samples
//
// Custom format specifier to demonstrate usage of el::Helpers::installCustomFormatSpecifier
//
// Revision 1.2
// @author mkhan3189
//
#include "easylogging++.h"
INITIALIZE_EASYLOGGINGPP
enum ELogLevel : el::base::type::VerboseLevel {
kLogLevel_Off = 0,
kLogLevel_Error,
kLogLevel_Warning,
kLogLevel_Info,
kLogLevel_Debug,
kLogLevel_Verbose
};
static std::map<ELogLevel, std::string> sSeverityMap {
{ kLogLevel_Error, "ouch!" },
{ kLogLevel_Warning, "oops" },
{ kLogLevel_Info, "hey" },
{ kLogLevel_Debug, "debugging" },
{ kLogLevel_Verbose, "loquacious" }
};
std::string
getSeverity(const el::LogMessage* message) {
return sSeverityMap[static_cast<ELogLevel>(message->verboseLevel())].c_str();
}
class HttpRequest {
public:
std::string getIp(const el::LogMessage*) {
return "192.168.1.1";
}
};
int main(void) {
using namespace std::placeholders;
HttpRequest request;
// Install format specifier
el::Helpers::installCustomFormatSpecifier(el::CustomFormatSpecifier("%ip_addr", std::bind(&HttpRequest::getIp, request, _1)));
// Either you can do what's done above (for member function) or if you have static function you can simply say
// el::CustomFormatSpecifier("%ip_addr", getIp)
// Configure loggers
el::Loggers::reconfigureAllLoggers(el::ConfigurationType::Format, "%datetime %level %ip_addr : %msg");
LOG(INFO) << "This is after installed 'ip_addr' spec";
// Uninstall custom format specifier
el::Helpers::uninstallCustomFormatSpecifier("%ip_addr");
LOG(INFO) << "This is after uninstalled";
// Install format specifier
el::Helpers::installCustomFormatSpecifier(el::CustomFormatSpecifier("%severity", getSeverity));
// Configure loggers
el::Loggers::reconfigureAllLoggers(el::ConfigurationType::Format, "%datetime{%b %d %H:%m:%s}: [%severity] %msg");
el::Loggers::setVerboseLevel(kLogLevel_Verbose);
VLOG(kLogLevel_Info) << "Installed 'severity' custom formatter";
VLOG(kLogLevel_Error) << "This is an error";
VLOG(kLogLevel_Warning) << "This is a warning";
VLOG(kLogLevel_Info) << "This is info";
VLOG(kLogLevel_Debug) << "This is debug";
VLOG(kLogLevel_Verbose) << "This is verbose";
// Uninstall custom format specifier
el::Helpers::uninstallCustomFormatSpecifier("%severity");
VLOG(kLogLevel_Info) << "Uninstalled 'severity' custom formatter";
VLOG(kLogLevel_Error) << "This is an error";
VLOG(kLogLevel_Warning) << "This is a warning";
VLOG(kLogLevel_Info) << "This is info";
VLOG(kLogLevel_Debug) << "This is debug";
VLOG(kLogLevel_Verbose) << "This is verbose";
return 0;
}
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