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<?php |
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namespace SilverStripe\ExternalLinks\Tasks; |
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use SilverStripe\ExternalLinks\Model\BrokenExternalLink; |
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use SilverStripe\ExternalLinks\Model\BrokenExternalPageTrack; |
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use SilverStripe\ExternalLinks\Model\BrokenExternalPageTrackStatus; |
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use SilverStripe\Dev\BuildTask; |
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use SilverStripe\Core\Config\Config; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\DB; |
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use SilverStripe\Dev\Debug; |
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use DOMNode; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\ExternalLinks\Tasks\LinkChecker; |
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use SilverStripe\CMS\Model\SiteTree; |
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class CheckExternalLinksTask extends BuildTask |
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{ |
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private static $dependencies = [ |
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'LinkChecker' => '%$' . LinkChecker::class |
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]; |
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/** |
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* @var bool |
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*/ |
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protected $silent = false; |
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/** |
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* @var LinkChecker |
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*/ |
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protected $linkChecker; |
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protected $title = 'Checking broken External links in the SiteTree'; |
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protected $description = 'A task that records external broken links in the SiteTree'; |
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protected $enabled = true; |
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/** |
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* Log a message |
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* |
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* @param string $message |
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*/ |
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protected function log($message) |
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{ |
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if (!$this->silent) { |
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Debug::message($message); |
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} |
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} |
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public function run($request) |
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{ |
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$this->runLinksCheck(); |
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} |
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/** |
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* Turn on or off message output |
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* |
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* @param bool $silent |
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*/ |
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public function setSilent($silent) |
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{ |
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$this->silent = $silent; |
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} |
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/** |
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* @param LinkChecker $linkChecker |
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*/ |
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public function setLinkChecker(LinkChecker $linkChecker) |
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{ |
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$this->linkChecker = $linkChecker; |
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} |
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/** |
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* @return LinkChecker |
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*/ |
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public function getLinkChecker() |
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{ |
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return $this->linkChecker; |
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} |
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/** |
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* Check the status of a single link on a page |
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* |
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* @param BrokenExternalPageTrack $pageTrack |
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* @param DOMNode $link |
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*/ |
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protected function checkPageLink(BrokenExternalPageTrack $pageTrack, DOMNode $link) |
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{ |
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$class = $link->getAttribute('class'); |
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$href = $link->getAttribute('href'); |
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$markedBroken = preg_match('/\b(ss-broken)\b/', $class); |
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// Check link |
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$httpCode = $this->linkChecker->checkLink($href); |
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if ($httpCode === null) { |
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return; // Null link means uncheckable, such as an internal link |
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} |
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// If this code is broken then mark as such |
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if ($foundBroken = $this->isCodeBroken($httpCode)) { |
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// Create broken record |
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$brokenLink = new BrokenExternalLink(); |
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$brokenLink->Link = $href; |
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$brokenLink->HTTPCode = $httpCode; |
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$brokenLink->TrackID = $pageTrack->ID; |
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$brokenLink->StatusID = $pageTrack->StatusID; // Slight denormalisation here for performance reasons |
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$brokenLink->write(); |
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} |
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// Check if we need to update CSS class, otherwise return |
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if ($markedBroken == $foundBroken) { |
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return; |
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} |
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if ($foundBroken) { |
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$class .= ' ss-broken'; |
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} else { |
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$class = preg_replace('/\s*\b(ss-broken)\b\s*/', ' ', $class); |
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} |
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$link->setAttribute('class', trim($class)); |
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} |
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/** |
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* Determine if the given HTTP code is "broken" |
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* |
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* @param int $httpCode |
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* @return bool True if this is a broken code |
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*/ |
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protected function isCodeBroken($httpCode) |
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{ |
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// Null represents no request attempted |
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if ($httpCode === null) { |
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return false; |
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} |
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// do we have any whitelisted codes |
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$ignoreCodes = $this->config()->get('IgnoreCodes'); |
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if (is_array($ignoreCodes) && in_array($httpCode, $ignoreCodes)) { |
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return false; |
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} |
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// Check if code is outside valid range |
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return $httpCode < 200 || $httpCode > 302; |
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} |
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/** |
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* Runs the links checker and returns the track used |
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* |
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* @param int $limit Limit to number of pages to run, or null to run all |
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* @return BrokenExternalPageTrackStatus |
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*/ |
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public function runLinksCheck($limit = null) |
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{ |
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// Check the current status |
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$status = BrokenExternalPageTrackStatus::get_or_create(); |
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// Calculate pages to run |
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$pageTracks = $status->getIncompleteTracks(); |
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if ($limit) { |
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$pageTracks = $pageTracks->limit($limit); |
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} |
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// Check each page |
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foreach ($pageTracks as $pageTrack) { |
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// Flag as complete |
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$pageTrack->Processed = 1; |
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$pageTrack->write(); |
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// Check value of html area |
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$page = $pageTrack->Page(); |
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$this->log("Checking {$page->Title}"); |
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$htmlValue = Injector::inst()->create('HTMLValue', $page->Content); |
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if (!$htmlValue->isValid()) { |
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continue; |
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} |
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// Check each link |
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$links = $htmlValue->getElementsByTagName('a'); |
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foreach ($links as $link) { |
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$this->checkPageLink($pageTrack, $link); |
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} |
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// Update content of page based on link fixes / breakages |
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$htmlValue->saveHTML(); |
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$page->Content = $htmlValue->getContent(); |
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$page->write(); |
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// Once all links have been created for this page update HasBrokenLinks |
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$count = $pageTrack->BrokenLinks()->count(); |
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$this->log("Found {$count} broken links"); |
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if ($count) { |
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$siteTreeTable = DataObject::getSchema()->tableName(SiteTree::class); |
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// Bypass the ORM as syncLinkTracking does not allow you to update HasBrokenLink to true |
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DB::query(sprintf( |
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'UPDATE "%s" SET "HasBrokenLink" = 1 WHERE "ID" = \'%d\'', |
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$siteTreeTable, |
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intval($pageTrack->ID) |
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)); |
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} |
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} |
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$status->updateJobInfo('Updating completed pages'); |
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$status->updateStatus(); |
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return $status; |
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} |
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private function updateCompletedPages($trackID = 0) |
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{ |
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$noPages = BrokenExternalPageTrack::get() |
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->filter(array( |
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'TrackID' => $trackID, |
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'Processed' => 1 |
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)) |
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->count(); |
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$track = BrokenExternalPageTrackStatus::get_latest(); |
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$track->CompletedPages = $noPages; |
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$track->write(); |
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return $noPages; |
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} |
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private function updateJobInfo($message) |
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{ |
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$track = BrokenExternalPageTrackStatus::get_latest(); |
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if ($track) { |
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$track->JobInfo = $message; |
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$track->write(); |
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} |
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} |
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} |
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