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.\" ========================================================================
.\"
.IX Title "Plack::Middleware::LogErrors 3pm"
.TH Plack::Middleware::LogErrors 3pm "2014-11-26" "perl v5.22.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Plack::Middleware::LogErrors \- Map psgi.errors to psgix.logger or other logger
.SH "VERSION"
.IX Header "VERSION"
version 0.002
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
Using a logger you have already configured (using Log::Dispatch as an
example):
.PP
.Vb 3
\&    use Log::Dispatch;
\&    my $logger = Log::Dispatch\->new;
\&    $logger\->add( Log::Dispatch::File\->new(...) );
\&
\&    builder {
\&        enable \*(AqLogDispatch\*(Aq, logger => $logger;
\&        enable \*(AqLogErrors\*(Aq;
\&        $app;
\&    }
.Ve
.PP
Using an explicitly defined logger:
.PP
.Vb 7
\&    builder {
\&        enable \*(AqLogErrors\*(Aq, logger => sub {
\&            my $args = shift;
\&            $logger\->log(%$args);
\&        };
\&        $app;
\&    }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\f(CW\*(C`psgi.errors\*(C'\fR defaults to \f(CW\*(C`stderr\*(C'\fR in most backends, which results in
content going somewhere unhelpful like the server console.
.PP
This middleware simply remaps the \f(CW\*(C`psgi.errors\*(C'\fR stream to the
\&\f(CW\*(C`psgix.logger\*(C'\fR stream, or an explicit logger that you provide.
.PP
This is especially handy when used in combination with other middlewares
such as Plack::Middleware::LogWarn (which diverts Perl warnings to
\&\f(CW\*(C`psgi.errors\*(C'\fR);
Plack::Middleware::HTTPExceptions (which diverts
uncaught exceptions to \f(CW\*(C`psgi.errors\*(C'\fR);
and Plack::Middleware::AccessLog, which defaults to \f(CW\*(C`psgi.errors\*(C'\fR when not
passed a logger \*(-- which is also automatically applied via plackup (so if
you provided no \f(CW\*(C`\-\-access\-log\*(C'\fR option indicating a filename, \f(CW\*(C`psgi.errors\*(C'\fR
is used).
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
.ie n .SS """logger"""
.el .SS "\f(CWlogger\fP"
.IX Subsection "logger"
A code reference for logging messages, that conforms to the
psgix.logger specification.
If not provided, \f(CW\*(C`psgix.logger\*(C'\fR is used, or the application will generate an
error at runtime if there is no such logger configured.
.SH "SUPPORT"
.IX Header "SUPPORT"
Bugs may be submitted through the \s-1RT\s0 bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=Plack-Middleware-LogErrors>
(or bug\-Plack\-Middleware\-LogErrors@rt.cpan.org <mailto:bug-Plack-Middleware-LogErrors@rt.cpan.org>).
I am also usually active on irc, as 'ether' at \f(CW\*(C`irc.perl.org\*(C'\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "\(bu" 4
PSGI::Extensions \- the definition of \f(CW\*(C`psgix.logger\*(C'\fR
.IP "\(bu" 4
\&\*(L"The Error Stream\*(R" in \s-1PSGI\s0 \- the definition of \f(CW\*(C`psgi.errors\*(C'\fR
.IP "\(bu" 4
Plack::Middleware::LogWarn \- maps warnings to \f(CW\*(C`psgi.errors\*(C'\fR
.IP "\(bu" 4
Plack::Middleware::HTTPExceptions \- maps exceptions to \f(CW\*(C`psgi.errors\*(C'\fR
.IP "\(bu" 4
Plack::Middleware::LogDispatch \- use a Log::Dispatch logger for \f(CW\*(C`psgix.logger\*(C'\fR
.IP "\(bu" 4
Plack::Middleware::Log4perl \- use a Log::Log4perl logger for \f(CW\*(C`psgix.logger\*(C'\fR
.IP "\(bu" 4
Plack::Middleware::SimpleLogger \- essentially the opposite of this module!
.SH "AUTHOR"
.IX Header "AUTHOR"
Karen Etheridge <ether@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2013 by Karen Etheridge.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.