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.\" ========================================================================
.\"
.IX Title "Catalyst::Log 3pm"
.TH Catalyst::Log 3pm "2012-06-14" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
Catalyst::Log \- Catalyst Log Class
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 6
\&    $log = $c\->log;
\&    $log\->debug($message);
\&    $log\->info($message);
\&    $log\->warn($message);
\&    $log\->error($message);
\&    $log\->fatal($message);
\&
\&    if ( $log\->is_debug ) {
\&         # expensive debugging
\&    }
.Ve
.PP
See Catalyst.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides the default, simple logging functionality for Catalyst.
If you want something different set \f(CW\*(C`$c\->log\*(C'\fR in your application module,
e.g.:
.PP
.Vb 1
\&    $c\->log( MyLogger\->new );
.Ve
.PP
Your logging object is expected to provide the interface described here.
Good alternatives to consider are Log::Log4Perl and Log::Dispatch.
.PP
If you want to be able to log arbitrary warnings, you can do something along
the lines of
.PP
.Vb 1
\&    $SIG{_\|_WARN_\|_} = sub { MyApp\->log\->warn(@_); };
.Ve
.PP
however this is (a) global, (b) hairy and (c) may have unexpected side effects.
Don't say we didn't warn you.
.SH "LOG LEVELS"
.IX Header "LOG LEVELS"
.SS "debug"
.IX Subsection "debug"
.Vb 2
\&    $log\->is_debug;
\&    $log\->debug($message);
.Ve
.SS "info"
.IX Subsection "info"
.Vb 2
\&    $log\->is_info;
\&    $log\->info($message);
.Ve
.SS "warn"
.IX Subsection "warn"
.Vb 2
\&    $log\->is_warn;
\&    $log\->warn($message);
.Ve
.SS "error"
.IX Subsection "error"
.Vb 2
\&    $log\->is_error;
\&    $log\->error($message);
.Ve
.SS "fatal"
.IX Subsection "fatal"
.Vb 2
\&    $log\->is_fatal;
\&    $log\->fatal($message);
.Ve
.SH "METHODS"
.IX Header "METHODS"
.SS "new"
.IX Subsection "new"
Constructor. Defaults to enable all levels unless levels are provided in
arguments.
.PP
.Vb 2
\&    $log = Catalyst::Log\->new;
\&    $log = Catalyst::Log\->new( \*(Aqwarn\*(Aq, \*(Aqerror\*(Aq );
.Ve
.SS "level"
.IX Subsection "level"
Contains a bitmask of the currently set log levels.
.SS "levels"
.IX Subsection "levels"
Set log levels
.PP
.Vb 1
\&    $log\->levels( \*(Aqwarn\*(Aq, \*(Aqerror\*(Aq, \*(Aqfatal\*(Aq );
.Ve
.SS "enable"
.IX Subsection "enable"
Enable log levels
.PP
.Vb 1
\&    $log\->enable( \*(Aqwarn\*(Aq, \*(Aqerror\*(Aq );
.Ve
.SS "disable"
.IX Subsection "disable"
Disable log levels
.PP
.Vb 1
\&    $log\->disable( \*(Aqwarn\*(Aq, \*(Aqerror\*(Aq );
.Ve
.SS "is_debug"
.IX Subsection "is_debug"
.SS "is_error"
.IX Subsection "is_error"
.SS "is_fatal"
.IX Subsection "is_fatal"
.SS "is_info"
.IX Subsection "is_info"
.SS "is_warn"
.IX Subsection "is_warn"
Is the log level active?
.SS "abort"
.IX Subsection "abort"
Should Catalyst emit logs for this request? Will be reset at the end of
each request.
.PP
*NOTE* This method is not compatible with other log apis, so if you plan
to use Log4Perl or another logger, you should call it like this:
.PP
.Vb 1
\&    $c\->log\->abort(1) if $c\->log\->can(\*(Aqabort\*(Aq);
.Ve
.SS "_send_to_log"
.IX Subsection "_send_to_log"
.Vb 1
\& $log\->_send_to_log( @messages );
.Ve
.PP
This protected method is what actually sends the log information to \s-1STDERR\s0.
You may subclass this module and override this method to get finer control
over the log output.
.SS "meta"
.IX Subsection "meta"
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Catalyst.
.SH "AUTHORS"
.IX Header "AUTHORS"
Catalyst Contributors, see Catalyst.pm
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
This library is free software. You can redistribute it and/or modify
it under the same terms as Perl itself.