Log::Report::Dispatcher::Log4perl(3)

NAME
Log::Report::Dispatcher::Log4perl - send messages to Log::Log4perl back-end

INHERITANCE
 Log::Report::Dispatcher::Log4perl
   is a Log::Report::Dispatcher

SYNOPSIS
 # start using log4perl via a config file
 # The name of the dispatcher is the name of the default category.
 dispatcher LOG4PERL => 'logger'
   , accept => 'NOTICE-'
   , config => "$ENV{HOME}/.log.conf";

 # disable default dispatcher
 dispatcher close => 'logger';

 # configuration inline, not in file: adapted from the Log4perl manpage
 my $name    = 'logger';
 my $outfile = '/tmp/a.log';
 my $config  = <<__CONFIG;
 log4perl.category.$name            = INFO, Logfile
 log4perl.logger.Logfile          = Log::Log4perl::Appender::File
 log4perl.logger.Logfile.filename = $outfn
 log4perl.logger.Logfile.layout   = Log::Log4perl::Layout::PatternLayout
 log4perl.logger.Logfile.layout.ConversionPattern = %d %F{1} %L> %m
 __CONFIG

 dispatcher LOG4PERL => $name, config => \$config;

DESCRIPTION
This dispatchers produces output tot syslog, based on the "Sys::Log4perl" module (which will not be automatically installed for you).

See documentation in the base class.

  Reasons <--> Levels
The REASONs for a message in Log::Report are names quite similar to the log levels used by Log::Log4perl. The default mapping is list below. You can change the mapping using new(to_level).

  TRACE   => $DEBUG    ERROR   => $ERROR
  ASSERT  => $DEBUG    FAULT   => $ERROR
  INFO    => $INFO     ALERT   => $FATAL
  NOTICE  => $INFO     FAILURE => $FATAL
  WARNING => $WARN     PANIC   => $FATAL
  MISTAKE => $WARN

  Categories
"Log::Report" uses text-domains for translation tables. These are also used as categories for the Log4perl infrastructure. So, typically every module start with:

   use Log::Report 'my-text-domain', %more_options;

Now, if there is a logger inside the log4perl configuration which is named 'my-text-domain', that will be used. Otherwise, the name of the dispatcher is used to select the logger.

Limitiations

The global $caller_depth concept of Log::Log4perl is broken. That variable is used to find the filename and line number of the logged messages. But these messages may have been caught, rerouted, eval'ed, and otherwise followed a unpredictable multi-leveled path before it reached the Log::Log4perl dispatcher. This means that layout patterns %F and %L are not useful in the generic case, maybe in your specific case.

METHODS
See documentation in the base class.

  Constructors
See documentation in the base class.

$obj->close()
    See "Constructors" in Log::Report::Dispatcher

Log::Report::Dispatcher::Log4perl->new(TYPE, NAME, OPTIONS)
    The Log::Log4perl infrastructure has all settings in a configuration file. In that file, you should find a category with the NAME.

     -Option       --Defined in             --Default
      accept         Log::Report::Dispatcher  'ALL'
      charset        Log::Report::Dispatcher  <undef>
      config                                  <required>
      format_reason  Log::Report::Dispatcher  'LOWERCASE'
      locale         Log::Report::Dispatcher  <system locale>
      mode           Log::Report::Dispatcher  'NORMAL'
      to_level                                []

    accept => REASONS
    charset => CHARSET
    config => FILENAME|SCALAR
        When a SCALAR reference is passed in, that must refer to a string which contains the configuration text. Otherwise, specify an existing FILENAME.

    format_reason => 'UPPERCASE'|'LOWERCASE'|'UCFIRST'|'IGNORE'|CODE
    locale => LOCALE
    mode => 'NORMAL'|'VERBOSE'|'ASSERT'|'DEBUG'|0..3
    to_level => ARRAY-of-PAIRS
        See reasonToLevel().

  Accessors
See documentation in the base class.

$obj->isDisabled()
    See "Accessors" in Log::Report::Dispatcher

$obj->logger([DOMAIN])
    Returns the Log::Log4perl::Logger object which is used for logging. When there is no specific logger for this DOMAIN (logger with the exact name of the DOMAIN) the default logger is being used, with the name of this dispatcher.

$obj->mode()
    See "Accessors" in Log::Report::Dispatcher

$obj->name()
    See "Accessors" in Log::Report::Dispatcher

$obj->needs([REASON])
    See "Accessors" in Log::Report::Dispatcher

$obj->type()
    See "Accessors" in Log::Report::Dispatcher

  Logging
See documentation in the base class.

$obj->collectLocation()
Log::Report::Dispatcher::Log4perl->collectLocation()
    See "Logging" in Log::Report::Dispatcher

$obj->collectStack([MAXDEPTH])
Log::Report::Dispatcher::Log4perl->collectStack([MAXDEPTH])
    See "Logging" in Log::Report::Dispatcher

$obj->log(HASH-of-OPTIONS, REASON, MESSAGE, DOMAIN)
    See "Logging" in Log::Report::Dispatcher

$obj->reasonToLevel(REASON)
    Returns a level which is understood by Log::Dispatch, based on a translation table. This can be changed with new(to_level).

    example:

     use Log::Log4perl     qw/:levels/;

     # by default, ALERTs are output as $FATAL
     dispatcher Log::Log4perl => 'logger'
       , to_level => [ ALERT => $ERROR, ]
       , ...;

$obj->stackTraceLine(OPTIONS)
Log::Report::Dispatcher::Log4perl->stackTraceLine(OPTIONS)
    See "Logging" in Log::Report::Dispatcher

$obj->translate(HASH-of-OPTIONS, REASON, MESSAGE)
    See "Logging" in Log::Report::Dispatcher

DETAILS
See documentation in the base class.

SEE ALSO
This module is part of Log-Report distribution version 1.01, built on January 06, 2014. Website: http://perl.overmeer.net/log-report/

LICENSE
Copyrights 2007-2014 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html