141 lines
3.9 KiB
Perl
141 lines
3.9 KiB
Perl
package WebGUI::Workflow::Activity::GetSyndicatedContent;
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=head1 LEGAL
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-------------------------------------------------------------------
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WebGUI is Copyright 2001-2008 Plain Black Corporation.
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-------------------------------------------------------------------
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Please read the legal notices (docs/legal.txt) and the license
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(docs/license.txt) that came with this distribution before using
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this software.
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-------------------------------------------------------------------
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http://www.plainblack.com info@plainblack.com
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-------------------------------------------------------------------
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=cut
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use strict;
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use base 'WebGUI::Workflow::Activity';
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use WebGUI::Asset::Wobject::SyndicatedContent;
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use JSON;
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=head1 NAME
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Package WebGUI::Workflow::Activity::GetSyndicatedContent;
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=head1 DESCRIPTION
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Prefetches syndicated content URLs so that the pages can be served up more quickly.
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=head1 SYNOPSIS
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See WebGUI::Workflow::Activity for details on how to use any activity.
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=head1 METHODS
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These methods are available from this class:
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=cut
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#-------------------------------------------------------------------
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=head2 definition ( session, definition )
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See WebGUI::Workflow::Activity::defintion() for details.
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=cut
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sub definition {
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my $class = shift;
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my $session = shift;
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my $definition = shift;
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my $i18n = WebGUI::International->new($session, "Asset_SyndicatedContent");
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push(@{$definition}, {
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name=>$i18n->get("get syndicated content"),
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properties=> { }
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});
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return $class->SUPER::definition($session,$definition);
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}
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#-------------------------------------------------------------------
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=head2 execute ( )
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See WebGUI::Workflow::Activity::execute() for details.
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=cut
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sub execute {
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my $self = shift;
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my $object = shift;
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my $instance = shift;
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unless (defined $instance) {
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$self->session->errorHandler->error("Could not instanciate Workflow Instance in GetSyndicatedContent Activity");
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return $self->ERROR;
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}
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# start time to check for timeouts
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my $time = time();
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my @syndicatedUrls = @{$self->getSyndicatedUrls($instance)};
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while (my $url = shift(@syndicatedUrls)) {
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# Get RSS data, which will be stored in the cache
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$self->session->errorHandler->info("GetSyndicatedContent workflow: Caching $url");
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my $returnValue = WebGUI::Asset::Wobject::SyndicatedContent::_get_rss_data($self->session, $url);
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if (!defined $returnValue) {
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$self->session->errorHandler->warn("GetSyndicatedContent Workflow Activity: _get_rss_data returned undef while trying to process syndicated content url $url, which usually indicates an improper URL, or a malformed document");
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next;
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}
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# Check for timeout
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last
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if (time() - $time > 55);
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}
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# if there are urls left, we need to process again
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if (scalar(@syndicatedUrls) > 0) {
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$instance->setScratch("syndicatedUrls", JSON::encode_json(\@syndicatedUrls));
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return $self->WAITING;
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}
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$instance->deleteScratch("syndicatedUrls");
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return $self->COMPLETE;
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}
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#---------------------------------------------------------------------
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=head2 getWobjectUrls ( )
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Returns URLs from all of the Syndicated Content Wobjects from scratch or fetches them from the db if needed
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=head3 session
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A reference to the current webgui session
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=cut
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sub getSyndicatedUrls {
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my $self = shift;
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my $instance = shift;
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my $syndicatedUrls = $instance->getScratch("syndicatedUrls");
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if ($syndicatedUrls) {
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return JSON::decode_json($syndicatedUrls);
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}
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my $urls = [];
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my $assets = WebGUI::Asset->getRoot($self->session)->getLineage(['descendants'], {
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includeOnlyClasses => ['WebGUI::Asset::Wobject::SyndicatedContent'],
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returnObjects => 1,
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});
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foreach my $asset (@$assets) {
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push @$urls, split(/\s+/, $asset->getRssUrl);
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}
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$instance->setScratch("syndicatedUrls", JSON::encode_json($urls));
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return $urls;
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}
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1;
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