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package Yukki::Error; |
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$Yukki::Error::VERSION = '0.99_01'; # TRIAL |
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$Yukki::Error::VERSION = '0.9901';use v5.24; |
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use utf8; |
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use Moo; |
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extends qw( HTTP::Throwable::Factory ); |
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use Yukki::Web::View; |
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use namespace::clean; |
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use Sub::Exporter -setup => { |
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exports => [ qw< http_throw http_exception > ], |
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}; |
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# ABSTRACT: Yukki's exception class |
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sub base_class { 'Yukki::Error' } |
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sub extra_roles { 'Yukki::Error::Body' } |
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sub http_exception { |
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my ($name, $args) = @_; |
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my %args = %{ $args // {} }; |
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my $status = delete $args{status} // 'InternalServerError'; |
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Yukki::Error->new_exception($status => { |
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%args, |
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message => "$name", |
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}); |
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} |
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sub http_throw { |
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my ($name, $args) = @_; |
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http_exception($name, $args)->throw; |
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} |
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sub BUILDARGS { |
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my ($class, $args) = @_; |
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$args; |
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} |
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{ |
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package Yukki::Error::Body; |
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$Yukki::Error::Body::VERSION = '0.99_01'; # TRIAL |
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$Yukki::Error::Body::VERSION = '0.9901';use Moo::Role; |
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sub body { |
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my ($self, $env) = @_; |
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my $app = $env->{'yukki.app'}; |
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my $view = Yukki::Web::View->new(app => $app); |
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my $ctx = Yukki::Web::Context->new(env => $env); |
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my $template = $view->prepare_template( |
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template => 'error.html', |
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directives => [ |
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'#error-page' => 'error_message', |
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], |
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); |
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$ctx->response->page_title($self->reason); |
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return $view->render_page( |
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template => $template, |
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context => $ctx, |
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vars => { |
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'error_message' => $self->message, |
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}, |
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); |
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} |
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sub body_headers { |
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my ($self, $body) = @_; |
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return [ |
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'Content-type' => 'text/html', |
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'Content-length' => length $body, |
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]; |
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} |
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sub as_string { |
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my $self = shift; |
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return $self->message; |
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} |
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around as_psgi => sub { |
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shift; # original method is ignored |
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my ($self, $env) = @_; |
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my $body = $self->body( $env ); |
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my $headers = $self->build_headers( $body ); |
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[ $self->status_code, $headers, [ defined $body ? $body : () ] ]; |
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}; |
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} |
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1; |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=head1 NAME |
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Yukki::Error - Yukki's exception class |
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120
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=head1 VERSION |
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122
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version 0.99_01 |
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=head1 SYNOPSIS |
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Yukki::Error->throw("Something really bad.", { ... }); |
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128
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=head1 DESCRIPTION |
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If you are familiar with L<HTTP::Throwable::Factory>, this is similar to that (and is based on that). |
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However, there are two differences. First, the error message is given primacy rather than exception type, so you can just use this to throw an exception: |
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use Yukki::Error qw( http_throw ); |
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http_throw('something went wrong'); |
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Since you almost always want your exception to be an internal server error of some kind, this makes more sense to me than having to write: |
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139
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use HTTP::Throwable::Factory qw( http_throw ); |
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http_throw(InternalServerError => { |
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message => 'something went wrong', |
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}); |
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144
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To specify the type of exception, us C<status>: |
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use Yukki::Error qw( http_throw ); |
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http_throw('something was not found', { |
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status => 'NotFound', |
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}); |
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151
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The second difference is that all exceptions thrown by this factory inherit from L<Yukki::Error>, so this works: |
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153
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use Scalar::Util qw( blessed ); |
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use Try::Tiny; |
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try { ... } |
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catch { |
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if (blassed $_ && $_->isa("Yukki::Error") { |
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# we now this is an application error from Yukki |
159
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} |
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}; |
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162
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This makes it easy to know whether Yukki generated the exception or something else did. |
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164
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=head1 EXPORTS |
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166
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=head2 http_exception |
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168
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my $error = http_exception('message', { |
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status => 'InternalServerError', |
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show_stask_trace => 0, |
171
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}); |
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173
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Creates a new exception object. Calls the constructor for L<Yukki:Error> and applied the L<HTTP::Throwable> status role needed (prior to construction actually). |
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175
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=head2 http_throw |
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177
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http_throw('message', { |
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status => 'InternalServerError', |
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show_stask_trace => 0, |
180
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}); |
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182
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Constructs the exception (via L</http_exception>) and throws it. |
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184
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=for Pod::Coverage BUILDARGS |
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base_class |
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extra_roles |
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188
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=head1 METHODS |
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190
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=head2 body |
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192
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Renders the HTML body for the error. |
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194
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=head2 body_headers |
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196
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Setup the HTTP headers. |
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198
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=head2 as_string |
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200
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Returns the message. |
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202
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=head1 AUTHOR |
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204
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Andrew Sterling Hanenkamp <hanenkamp@cpan.org> |
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206
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=head1 COPYRIGHT AND LICENSE |
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208
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This software is copyright (c) 2017 by Qubling Software LLC. |
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210
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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213
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=cut |