NAME

    Kelp::Module::Logger::Log4perl - Log4perl for Kelp applications

DESCRIPTION

    This module provides log interface for Kelp web application. It uses
    Log::Log4perl instead of Log::Dispatch.

SYNOPSIS

        # conf/config.pl
        {
            'modules' => ['Logger::Log4perl'],
            'modules_init' => {
                'Logger::Log4perl' => {
                    'category' => '',
                    'conf'     => {
                        'log4perl.rootLogger'                                  => 'TRACE, CommonLog',
                        'log4perl.appender.CommonLog'                          => 'Log::Log4perl::Appender::Screen',
                        'log4perl.appender.CommonLog.layout'                   => 'Log::Log4perl::Layout::PatternLayout::Multiline',
                        'log4perl.appender.CommonLog.layout.ConversionPattern' => '%d{yyyy-MM-dd HH:mm:ss} - %p - %m%n',
                        'log4perl.appender.CommonLog.utf8'                     => '1',
                    }
                }
            }
        }
    
        # lib/MyApp.pm
        sub run {
            my $self = shift;
            my $app  = $self->SUPER::run(@_);
            ...;
            $app->info( 'Kelp is ready to rock!' );
            $app->logger( 'trace', $some_ref_to_dump );
    
            return $app;
        }

    Although module provides alternarive ways of initialization like
    "Alternative-initialization" in Log::Log4perl:

        # conf/config.pl
    
        {
            'modules_init' => {
                'Logger::Log4perl' => {
                    'category' => '',
                    'conf'     => 'conf/logger.conf',
                }
            }
        };

    or even scalar ref:

        {
            'modules' => [ 'Logger::Log4perl' ],
            'modules_init' => {
                'Logger::Log4perl' => {
                    'category' => '',
                    'conf'     => \<<CONF
        log4perl.rootLogger                                  = DEBUG, CommonLog
        log4perl.appender.CommonLog                          = Log::Log4perl::Appender::Screen
        log4perl.appender.CommonLog.layout                   = Log::Log4perl::Layout::PatternLayout::Multiline
        log4perl.appender.CommonLog.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss} - %p - %m%n
        log4perl.appender.CommonLog.utf8                     = 1
        CONF
               }
            }
        };

CONFIGURATION

    Configuration accepts href with two keys:

 category

    The Log::Log4perl category to send logs to. Defaults to '' which sends
    to root logger.

 conf

    Configuration for <Log::Log4perl::init> method.

REGISTERED METHODS

    Log methods can take array of scalars or reference as arguments. In
    case of reference Data::Dumper is used to deserialize information.

 debug/info/error

    Write log message to $DEBUG/$INFO/$ERROR level.

        # inside controller
        $c->debug( $debug_data );
        $c->info( "my info message." );
        $c->error( @error_messages );

 logger

    Write message to one of the following default Log::Log4perl log levels:
    trace, debug, info, warn, error, fatal, always. For backward
    compability you can use Log::Dispatch levels too.

        # inside controller
        $c->logger( 'always', @messages );
    
        # log dispatch level
        $c->logger( 'notice', 'Some notice' );

AUTHOR

    Konstantin Yakunin

LICENSE

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself, either Perl version 5.8.2 or, at
    your option, any later version of Perl 5 you may have available.

BUGS

    None reported... yet.

SEE ALSO

    Log::Log4perl

    Kelp::Module::Logger