I want to log some results into a file withot messing with the leves of my logs. Is it possible to do that with Log::Log4perl. I have tried to follow the documentation, but I only was able to find that it depends on the log level to printo a file? as in here :
og::Log4perl->easy_init( { level => $DEBUG,
file => ">>test.log",
layout => '%F{1}-%L-%M: %m%n' },
{ level => $DEBUG,
file => "STDOUT",
layout => '%m%n' },
);
But I want to keep logging my stuff in screen and only put another messages into the log file. But I have not been able to find a way to put the result to the log:
use strict;
use warnings;
use Log::Log4perl;
use Win32::Console::ANSI;
my $results = "result.txt";
my $conf = q(
log4perl.appender.SCREEN = Log::Log4perl::Appender::ScreenColoredLevels
log4perl.appender.SCREEN.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.SCREEN.color.INFO = bright_white
log4perl.appender.SCREEN.color.WARN = bright_yellow
log4perl.appender.SCREEN.color.ERROR = bright_red
log4perl.appender.SCREEN.layout.ConversionPattern = [%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-5p] %m %50C::%L %n
);
my $log_level = "TRACE";
my $log_level_conf = "log4perl.category.".__FILE__." = ".$log_level.", SCREEN\n";
$conf = $log_level_conf.$conf;
Log::Log4perl::init( \$conf );
my $log = Log::Log4perl::get_logger(__FILE__);
$log->info("INFO");
$log->debug("DEBUG");
$log->error("error");
$log->fatal("FATAL");
$log->trace("TRACE");
print "\n\n";
$log->info("Im doing foo");
$log->debug( "doing foo");
$log->trace( "crap from foo");
$log->info( "Im doing bar");
$log->debug( "Im doing foo");
$log->trace( "crap from bar");
# $log->result "Foo and bar done";
The line where it says result is the one that I´m looking for, some way to have a diferent function to write into the log using the same $log.
Is this possible?
Edit: Following the suggestion by @amit bhosale I'm still not able to make it work:
use strict;
use warnings;
use Log::Log4perl;
use Win32::Console::ANSI;
my $conf = q(
log4perl.category = TRACE, AppResult
log4perl.appender.SCREEN = Log::Log4perl::Appender::ScreenColoredLevels
log4perl.appender.SCREEN.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.SCREEN.color.INFO = bright_white
log4perl.appender.SCREEN.color.WARN = bright_yellow
log4perl.appender.SCREEN.color.ERROR = bright_red
log4perl.appender.SCREEN.layout.ConversionPattern = [%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-5p] %m %50C::%L %n
# Custom RESULT logs
log4perl.filter.ResultsFilter = Log::Log4perl::Filter::LevelMatch
log4perl.filter.ResultsFilter.LevelToMatch = RESULT
log4perl.filter.ResultsFilter.AcceptOnMatch = true
log4perl.appender.AppResult = Log::Log4perl::Appender::File
log4perl.appender.AppResult.filename = results.log
log4perl.appender.AppResult.mode=append
log4perl.appender.AppResult.Filter = ResultsFilter
log4perl.appender.AppResult.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.AppResult.layout.ConversionPattern = [%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-5p] %m %50C::%L %n
);
my $log_level = "TRACE";
my $log_level_conf = "log4perl.category.".__FILE__." = ".$log_level.", SCREEN\n";
$conf = $log_level_conf.$conf;
Log::Log4perl::Logger::create_custom_level("RESULT", "WARN");
Log::Log4perl::init( \$conf );
my $log = Log::Log4perl::get_logger(__FILE__);
$log->info("INFO");
$log->debug("DEBUG");
$log->error("ERROR");
$log->warn("WARN");
$log->fatal("FATAL");
$log->trace("TRACE");
print "\n\n";
$log->info("Im doing foo");
$log->debug( "doing foo");
$log->trace( "crap from foo");
$log->info( "Im doing bar");
$log->debug( "Im doing foo");
$log->trace( "crap from bar");
$log->log('RESULT', "Foo and bar done");
I´m getting a priority RESULT isn't numeric at test_logs.pl line 60. exception
Another way to achieve (without creating custom level). (above solution is valid this is just another way)
Created log.conf file
############################################################
# A simple root logger with a Log::Log4perl::Appender::File
# file appender in Perl.
############################################################
#There are six predefined log levels: FATAL, ERROR, WARN, INFO, DEBUG, and TRACE
# (in descending priority). Your configured logging level has to at least match
#the priority of the logging message.
#If your configured logging level is TRACE, then messages logged with info(),
#debug(), and trace() fatal(), error() and warn() will make their way through,
#because their priority is higher or equal than the configured setting.
#This enables messages of priority TRACE or higher in the root hierarchy
# if a function/method wants a reference to the logger, it just calls the Logger's static get_logger($category)
#method to obtain a reference to the one and only possible logger object
#of a certain category.
log4perl.category.My.SCREEN = TRACE, Screen
#Appenders will be triggered whenever the configured logging
#level requires a message to be logged
# log a message (display) on screen
log4perl.appender.Screen = Log::Log4perl::Appender::ScreenColoredLevels
log4perl.appender.Screen.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.Screen.color.INFO = bright_white
log4perl.appender.Screen.color.WARN = bright_yellow
log4perl.appender.Screen.color.ERROR = bright_red
log4perl.appender.Screen.layout.ConversionPattern = [%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-5p] %m %50C::%L %n
# RESULT appender
log4perl.category.My.Result= INFO, resultlog
# log a message to log file (in this case app.result file)
log4perl.appender.resultlog= Log::Log4perl::Appender::File
log4perl.appender.resultlog.filename = app.result
log4perl.appender.resultlog.mode=append
log4perl.appender.resultlog.layout=PatternLayout
log4perl.appender.resultlog.layout.ConversionPattern=[%p] %F %L %c - %m%n
Main perl script
use strict;
use warnings;
use Log::Log4perl;
use Win32::Console::ANSI;
#configuration file is saved as log.conf, you need to read it in the startup section of your code
# After this done somewhere in the code, you can retrieve logger objects anywhere in the code.
# provide log configuration file path
Log::Log4perl->init("log.conf");
#Log::Log4perl uses categories to determine if a log statement
#in a component should be executed or suppressed at the current logging level.
#Most of the time, these categories are just the classes the log statements
my $log_screen = Log::Log4perl->get_logger("My::SCREEN");
my $log_result = Log::Log4perl->get_logger("My::Result");
# sample logging statement
$log_screen->info("INFO");
$log_screen->debug("DEBUG");
$log_screen->error("ERROR");
$log_screen->warn("WARN");
$log_screen->fatal("FATAL");
$log_screen->trace("TRACE");
# result
$log_result->info("this is a result message1");
Output to file (example)
[INFO] log.pl 24 My.Result - this is a result message1
Output to Screen (different colour)
[2020-08-16 20:52:40.721] [INFO ] INFO main::16
[2020-08-16 20:52:40.723] [DEBUG] DEBUG main::17
[2020-08-16 20:52:40.723] [ERROR] ERROR main::18
[2020-08-16 20:52:40.725] [WARN ] WARN main::19
[2020-08-16 20:52:40.726] [FATAL] FATAL main::20
[2020-08-16 20:52:40.727] [TRACE] TRACE main::21