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## no critic (RequireUseStrict) |
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package Plack::Middleware::Delay; |
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BEGIN { |
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$Plack::Middleware::Delay::VERSION = '0.01'; |
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} |
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## use critic (RequireUseStrict) |
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use strict; |
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use warnings; |
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use parent 'Plack::Middleware'; |
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use Plack::Util; |
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631
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sub call { |
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my ( $self, $env ) = @_; |
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my $app = $self->app; |
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my $delay = $self->{'delay'} || 0; |
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my $sleep_fn = $self->{'sleep_fn'} || sub { |
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my ( $delay, $invoke ) = @_; |
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sleep $delay; |
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$invoke->(); |
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}; |
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return sub { |
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my ( $respond ) = @_; |
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$sleep_fn->($delay, sub { |
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my $res = $app->($env); |
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if(ref($res) eq 'ARRAY') { |
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$respond->($res); |
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} elsif(ref($res) eq 'CODE') { |
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$res->($respond); |
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} |
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}); |
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}; |
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} |
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1; |
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=pod |
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=head1 NAME |
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Plack::Middleware::Delay - Put delays on your requests |
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=head1 VERSION |
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version 0.01 |
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=head1 SYNOPSIS |
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use Plack::Builder; |
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builder { |
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enable 'Delay', delay => 5; # delays the response by five seconds |
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$app; |
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}; |
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# or, if you're in an AnyEvent-based PSGI server... |
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builder { |
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enable 'Delay', delay => 5, sleep_fn => sub { |
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my ( $delay, $invoke ) = @_; |
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71
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my $timer; |
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$timer = AnyEvent->timer( |
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after => $delay, |
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cb => sub { |
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undef $timer; |
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$invoke->(); |
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}, |
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); |
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}; |
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$app; |
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}; |
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83
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=head1 DESCRIPTION |
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85
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This middleware imposes an artifical delay on requests, for purposes of |
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testing. It could also be used to implement L. |
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88
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=head1 OPTIONS |
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90
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=head2 delay |
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92
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The number of seconds to sleep. It can be an integer or a float; however, the |
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default sleep_fn only works on integers. |
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95
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=head2 sleep_fn |
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97
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A subroutine reference that will be called when it's time to go to sleep. The |
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subroutine reference will be provided two arguments: the number of seconds to |
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sleep (ie. the value you provided to L), and a subroutine reference |
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that will continue the PSGI application as normal (think of it as a |
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continuation). |
102
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103
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=head1 SEE ALSO |
104
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105
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L |
106
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107
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=head1 AUTHOR |
108
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109
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Rob Hoelz |
110
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111
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=head1 COPYRIGHT AND LICENSE |
112
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113
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This software is copyright (c) 2011 by Rob Hoelz. |
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115
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This is free software; you can redistribute it and/or modify it under |
116
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the same terms as the Perl 5 programming language system itself. |
117
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118
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=head1 BUGS |
119
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120
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Please report any bugs or feature requests on the bugtracker website |
121
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http://github.com/hoelzro/plack-middleware-delay/issues |
122
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123
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When submitting a bug or request, please include a test-file or a |
124
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patch to an existing test-file that illustrates the bug or desired |
125
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feature. |
126
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127
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=cut |
128
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129
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130
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__END__ |