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package POE::Component::DirWatch::Object::Untouched; |
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2291
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use strict; |
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72
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use warnings; |
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561
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use Moose; |
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368417
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12
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use Array::Compare; |
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87795
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57
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use POE; |
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our $VERSION = "0.1200"; |
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extends 'POE::Component::DirWatch::Object'; |
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has 'stat_interval'=> (is => 'rw', isa => 'Num', required => 1, default => 1); |
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has 'cmp' => (is => 'rw', isa => 'Object', required => 1, |
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default => sub{ Array::Compare->new } ); |
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#--------#---------#---------#---------#---------#---------#---------#---------# |
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#Remind me of stat: |
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# 7 size total size of file, in bytes |
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# 8 atime last access time in seconds since the epoch |
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# 9 mtime last modify time in seconds since the epoch |
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# 10 ctime inode change time in seconds since the epoch (*) |
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before '_start' => sub{ |
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my ($self, $kernel) = @_[OBJECT, KERNEL]; |
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$kernel->state('stat_check', $self, '_stat_check'); |
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}; |
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override '_dispatch' => sub{ |
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my ($self, $kernel, @params) = @_[OBJECT, KERNEL, ARG0, ARG1]; |
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return unless $self->filter->(@params); |
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$kernel->delay(stat_check => $self->stat_interval, |
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\@params, [ ( stat($_->[1]) )[7..10] ] |
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) |
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}; |
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sub _stat_check{ |
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0
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my ($self, $kernel, $params, $stats) = @_[OBJECT, KERNEL, ARG0, ARG1]; |
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$kernel->yield(callback => $params) |
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if $self->cmp->compare($stats, [ ( stat($params->[1]) )[7..10] ]); |
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} |
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45
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1; |
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__END__; |
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#--------#---------#---------#---------#---------#---------#---------#---------# |
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=head1 NAME |
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54
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POE::Component::DirWatch::Object::Untouched |
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56
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=head1 SYNOPSIS |
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use POE::Component::DirWatch::Object::Untouched; |
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60
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#$watcher is a PoCo::DW:Object::Untouched |
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my $watcher = POE::Component::DirWatch::Object::Untouched->new |
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( |
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alias => 'dirwatch', |
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directory => '/some_dir', |
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filter => sub { $_[0] =~ /\.gz$/ && -f $_[1] }, |
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callback => \&some_sub, |
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interval => 5, |
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stat_interval => 2, #pick up files if they are untouched after 2 seconds |
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); |
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71
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$poe_kernel->run; |
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73
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=head1 DESCRIPTION |
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75
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POE::Component::DirWatch::Object::Untouched extends DirWatch::Object in order to |
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exclude files that appear to be in use or are actively being changed. |
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78
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=head1 Accessors |
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80
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=head2 stat_interval |
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Read-Write. An integer value that specifies how many seconds to wait in between the |
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call to dispatch and the actual dispatch. The interval here serves as a dead period |
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in between when the initial stat readings are made and the second reading is made |
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(the one that determines whether there was any change or not). Note that the |
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C<interval> in C<POE::Component::DirWatch::Object> will be delayed by this length. |
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See C<_stat_check> for details. |
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89
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=head2 cmp |
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91
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An Array::Compare object |
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93
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=head1 Extended methods |
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95
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=head2 _start |
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97
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C<after '_start'> the kernel is called and a new 'stat_check' event is added. |
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99
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=head2 _dispatch |
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101
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C<override '_dispatch'> to delay and delegate the dispatching to _stat_check. |
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Filtering still happens at this stage. |
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104
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=head1 New Methods |
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106
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=head2 _stat_check |
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108
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Schedule a callback event for every file whose contents have not changed since the |
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C<poll> event. After all callbacks are scheduled, set an alarm for the next poll. |
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111
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ARG0 should be the proper params for C<callback> and ARG1 the original C<stat()> |
112
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reading we are comparing against. |
113
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114
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=head2 meta |
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116
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Keeping tests happy. |
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118
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=head1 SEE ALSO |
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120
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L<POE::Component::DirWatch::Object>, L<Moose> |
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122
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=head1 AUTHOR |
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124
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Guillermo Roditi, <groditi@cpan.org> |
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126
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=head1 BUGS |
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128
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If a file is created and deleted between polls it will never be seen. Also if a file |
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is edited more than once in between polls it will never be picked up. |
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131
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Please report any bugs or feature requests to |
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C<bug-poe-component-dirwatch-object at rt.cpan.org>, or through the web interface at |
133
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L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=POE-Component-DirWatch-Object>. |
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I will be notified, and then you'll automatically be notified of progress on |
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your bug as I make changes. |
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137
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=head1 SUPPORT |
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139
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You can find documentation for this module with the perldoc command. |
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141
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perldoc POE::Component::DirWatch::Object::Untouched |
142
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143
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You can also look for information at: |
144
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145
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=over 4 |
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147
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=item * AnnoCPAN: Annotated CPAN documentation |
148
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149
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L<http://annocpan.org/dist/POE-Component-DirWatch-Object> |
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151
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=item * CPAN Ratings |
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153
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L<http://cpanratings.perl.org/d/POE-Component-DirWatch-Object> |
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155
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=item * RT: CPAN's request tracker |
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157
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L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=POE-Component-DirWatch-Object> |
158
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159
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=item * Search CPAN |
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161
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L<http://search.cpan.org/dist/POE-Component-DirWatch-Object> |
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163
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=back |
164
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165
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=head1 ACKNOWLEDGEMENTS |
166
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167
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People who answered way too many questions from an inquisitive idiot: |
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169
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=over 4 |
170
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171
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=item #PoE & #Moose |
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173
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=item Matt S Trout <mst@shadowcatsystems.co.uk> |
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175
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=item Rocco Caputo |
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177
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=back |
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179
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=head1 COPYRIGHT |
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181
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Copyright 2006 Guillermo Roditi. All Rights Reserved. This is |
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free software; you may redistribute it and/or modify it under the same |
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terms as Perl itself. |
184
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185
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=cut |
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