NAME
Catalyst::Plugin::ErrorCatcher - Catch application errors and emit them
somewhere
VERSION
version 0.0.8.6
SYNOPSIS
use Catalyst qw/-Debug StackTrace ErrorCatcher/;
DESCRIPTION
This plugin allows you to do More Stuff with the information that would
normally only be seen on the Catalyst Error Screen courtesy of the
Catalyst::Plugin::StackTrace plugin.
CONFIGURATION
The plugin is configured in a similar manner to other Catalyst plugins:
enable 1
context 5
always_log 0
include_session 0
emit_module A::Module
enable
Setting this to *true* forces the module to work its voodoo.
It's also enabled if the value is unset and you're running Catalyst
in debug-mode.
context
When there is stack-trace information to share, how many lines of
context to show around the line that caused the error.
emit_module
This specifies which module to use for custom output behaviour.
You can chain multiple modules by specifying a line in the config
for each module you'd like used:
emit_module A::Module
emit_module Another::Module
emit_module Yet::Another::Module
If none are specified, or all that are specified fail, the default
behaviour is to log the prepared message at the INFO level via
"$c->log()".
For details on how to implement a custom emitter see "CUSTOM EMIT
CLASSES" in this documentation.
always_log
The default plugin behaviour when using one or more emitter modules
is to suppress the *info* log message if one or more of them
succeeded.
If you wish to log the information, via "$c->log()" then set this
value to 1.
include_session
The default behaviour is to suppress potentially sensitive and
revealing session-data in the error report.
If you feel that this information is useful in your investigations
set the value to *true*.
When set to 1 the report will include a "Data::Dump::pp()"
representation of the request's session.
STACKTRACE IN REPORTS WHEN NOT RUNNING IN DEBUG MODE
It is possible to run your application in non-Debug mode, and still have
errors reported with a stack-trace.
Include the StackTrace and ErrorCatcher plugins in MyApp.pm:
use Catalyst qw<
ErrorCatcher
StackTrace
>;
Set up your "myapp.conf" to include the following:
enable 1
enable 1
# include other options here
Any exceptions should now show your user the *"Please come back later"*
screen whilst still capturing and emitting a report with stack-trace.
PROVIDED EMIT CLASSES
Catalyst::Plugin::ErrorCatcher::Email
This module uses MIME::Lite to send the prepared output to a specified
email address.
See Catalyst::Plugin::ErrorCatcher::Email for usage and configuration
details.
CUSTOM EMIT CLASSES
A custom emit class takes the following format:
package A::Module;
# vim: ts=8 sts=4 et sw=4 sr sta
use strict;
use warnings;
sub emit {
my ($class, $c, $output) = @_;
$c->log->info(
'IGNORING OUTPUT FROM Catalyst::Plugin::ErrorCatcher'
);
return;
}
1;
__END__
The only requirement is that you have a sub called "emit".
"Catalyst::Plugin::ErrorCatcher" passes the following parameters in the
call to "emit()":
$class
The package name
$c A Context object
$output
The processed output from "Catalyst::Plugin::ErrorCatcher"
If you want to use the original error message you should use:
my @error = @{ $c->error };
You may use and abuse any Catalyst methods, or other Perl modules as you
see fit.
KNOWN ISSUES
The test-suite coverage is quite low.
SEE ALSO
Catalyst, Catalyst::Plugin::StackTrace
THANKS
The authors of Catalyst::Plugin::StackTrace, from which a lot of code
was used.
Ash Berlin for guiding me in the right direction after a known hacky
first implementation.
AUTHOR
Chisel Wright
COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Chisel Wright.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.