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package Plack::Middleware::Log4perl;
use strict;
use parent qw(Plack::Middleware);
use Plack::Util::Accessor qw(category logger conf);
use Carp ();
sub prepare_app {
my $self = shift;
if ($self->conf) {
require Log::Log4perl;
Log::Log4perl::init($self->conf);
}
# NOTICE: if category = '0' you must not change it by '' (root logger)
$self->logger( Log::Log4perl->get_logger( defined $self->category ? $self->category : '' ) );
}
sub call {
my($self, $env) = @_;
$env->{'psgix.logger'} = sub {
my $args = shift;
my $level = $args->{level};
local $Log::Log4perl::caller_depth
= $Log::Log4perl::caller_depth + 1;
$self->logger->$level($args->{message});
};
$self->app->($env);
}
1;
__END__
=head1 NAME
Plack::Middleware::Log4perl - Uses Log::Log4perl to configure logger
=head1 SYNOPSIS
my $app = sub {
my $env = shift;
$env->{'psgix.logger'}({ level => 'error', message => 'Hi' });
return [
'200',
[ 'Content-Type' => 'text/plain' ],
[ "Hello World" ],
];
};
# Use your own Log4perl configuration
use Log::Log4perl;
Log::Log4perl::init('/path/to/log4perl.conf');
builder {
# tell the logger to log with 'plack' category
enable "Log4perl", category => "plack";
$app;
}
# Configure with Log4perl middleware options
builder {
enable "Log4perl", category => "plack", conf => '/path/to/log4perl.conf';
$app;
}
=head1 DESCRIPTION
Log4perl is a L<Plack::Middleware> component that allows you to use
L<Log::Log4perl> to configure the logging object C<psgix.logger> for a
given category.
=head1 CONFIGURATION
=over 4
=item category
The C<log4perl> category to send logs to. Defaults to C<''> which means
it send to the root logger.
=item conf
The configuration file path (or a scalar ref containing the config
string) for L<Log::Log4perl> to automatically configure.
=back
=head1 AUTHOR
Tatsuhiko Miyagawa
=head1 SEE ALSO
L<Log::Log4perl>
L<Plack::Middleware::LogDispatch>
=cut
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