/[Grep]/lib/Grep/Action/Fetch.pm
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Annotation of /lib/Grep/Action/Fetch.pm

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Revision 44 - (hide annotations)
Tue Feb 20 21:55:24 2007 UTC (17 years, 3 months ago) by dpavlin
File size: 3354 byte(s)
refactoring: after testing IPC::PubSub with vairous back-ends, it seems that COMET isn't a
good choice if you want predictible delivery. It also has problems with delay, because it's
a, uh, bus....

However, this refactoring has a good side: code size is reduced and is now easier to handle.
1 dpavlin 3 use strict;
2     use warnings;
3    
4     =head1 NAME
5    
6     Grep::Action::Fetch
7    
8     =cut
9    
10     package Grep::Action::Fetch;
11     use base qw/Grep::Action Jifty::Action/;
12    
13     use XML::Feed;
14 dpavlin 21 use LWP::UserAgent;
15 dpavlin 3
16     use Data::Dump qw/dump/;
17    
18     use Jifty::Param::Schema;
19     use Jifty::Action schema {
20    
21     param q =>
22     type is 'text',
23     label is 'Search for',
24     hint is 'enter few words to search for';
25    
26     param feed =>
27     label is 'From feed',
28 dpavlin 7 render as 'select',
29 dpavlin 3 available are defer {
30     my $feeds = Grep::Model::FeedCollection->new;
31     $feeds->order_by({ column => 'title', order => 'ASC' });
32     $feeds->unlimit;
33     warn "feeds ", $feeds->build_select_query;
34     [{
35     display_from => 'title',
36     value_from => 'id',
37     collection => $feeds,
38     }];
39     };
40    
41 dpavlin 25 param item_fragment =>
42     label is 'Show',
43     render as 'select',
44 dpavlin 28 # valid are qw/result result_short/,
45     # available are qw/result result_short/;
46     available are qw/long short title/;
47 dpavlin 25
48 dpavlin 3 };
49    
50     =head2 take_action
51    
52 dpavlin 29 Returns C<Grep::Model::ItemCollection> of fatched items from Feed which will
53     also be stored in local cache.
54    
55 dpavlin 3 =cut
56    
57     sub take_action {
58     my $self = shift;
59    
60     # Custom action code
61    
62     my $feed = Grep::Model::Feed->new();
63     my $feed_id = $self->argument_value('feed');
64 dpavlin 29 my $q = $self->argument_value('q');
65 dpavlin 43 my $user_id = Jifty->web->current_user->id;
66 dpavlin 3
67     if (! $feed_id) {
68     $self->result->message("Need feed ID");
69     return 0;
70     }
71    
72     $feed->load_by_cols( id => $feed_id );
73    
74     if (! $feed->id) {
75     $self->result->message("Can't fetch feed $feed_id");
76     return 0;
77     }
78    
79 dpavlin 43 my $message;
80 dpavlin 7 my $uri = $feed->uri;
81     if ($uri =~ m/%s/) {
82 dpavlin 29 $uri = $feed->search_uri( $q );
83 dpavlin 43 $message = 'Searching';
84 dpavlin 7 } else {
85 dpavlin 43 $message = 'Fetching';
86 dpavlin 7 }
87 dpavlin 44 $message .= ' ' . $feed->title . " at $uri";
88 dpavlin 3
89 dpavlin 43 Jifty->log->info( $message );
90    
91 dpavlin 31 my $items = Grep::Model::ItemCollection->new();
92    
93 dpavlin 21 my $ua = LWP::UserAgent->new;
94     $ua->default_header( 'Cookie' => $feed->cookie );
95     my $r = $ua->get( $uri );
96 dpavlin 44 return $self->result->error(
97 dpavlin 31 $feed->title . " returned " . $r->status_line . " for $uri\n"
98     ) unless ( $r->is_success );
99 dpavlin 21
100     my $content = $r->content;
101    
102 dpavlin 44 return $self->result->error( "No content returned from $uri" ) unless length( $content ) > 1;
103 dpavlin 21
104 dpavlin 31
105 dpavlin 21 my $xml_feed = XML::Feed->parse( \$content )
106 dpavlin 44 or return $self->result->error( $feed->title, " returned ", XML::Feed->errstr, " for $uri" );
107 dpavlin 3
108 dpavlin 21 warn "getting entries from ", $xml_feed->title, "\n";
109 dpavlin 7
110 dpavlin 3 for my $entry ($xml_feed->entries) {
111     my $i = Grep::Model::Item->new();
112    
113     $i->load_or_create(
114     in_feed => $feed,
115     title => $entry->title,
116     link => $entry->link,
117 dpavlin 5 content => $entry->content->body,
118     summary => $entry->summary->body,
119 dpavlin 3 category => $entry->category,
120     author => $entry->author,
121 dpavlin 29 issued => $entry->issued ? $entry->issued->strftime("%Y-%m-%d %H:%M:%S") : undef,
122     modified => $entry->modified ? $entry->modified->strftime("%Y-%m-%d %H:%M:%S") : undef,
123 dpavlin 3 );
124 dpavlin 5
125 dpavlin 25 if ( $i->id ) {
126 dpavlin 29 $items->add_record( $i );
127 dpavlin 7
128 dpavlin 29 Jifty->log->debug("added ", $i->id, " to collection");
129 dpavlin 25 } else {
130 dpavlin 29 warn "can't add entry ", dump( $entry ) unless ( $i->id );
131 dpavlin 25 }
132 dpavlin 9
133 dpavlin 3 }
134    
135 dpavlin 33 if ( my $count = $items->count ) {
136 dpavlin 7
137 dpavlin 33 my $message = "$count results for '$q' in " . $feed->title;
138 dpavlin 7
139 dpavlin 31 $self->result->message( $message );
140    
141 dpavlin 44 $self->result->content( items => $items );
142 dpavlin 42 $self->result->content( count => $items->count );
143 dpavlin 7
144     } else {
145 dpavlin 44 return $self->result->error( "No results for '$q' in " . $feed->title );
146 dpavlin 7 }
147 dpavlin 29
148     return $items;
149 dpavlin 3 }
150    
151     1;
152    

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