/**
* Save expanded version of all unexpanded URLs to data store, as well as intermediary short links.
*/
public function expandOriginalURLs($flickr_api_key = null)
{
$links_to_expand = $this->link_dao->getLinksToExpand($this->link_limit);
$this->logger->logUserInfo(count($links_to_expand) . " links to expand. Please wait. Working...", __METHOD__ . ',' . __LINE__);
$total_expanded = 0;
$total_errors = 0;
$has_expanded_flickr_link = false;
foreach ($links_to_expand as $index => $link) {
if (Utils::validateURL($link->url)) {
$endless_loop_prevention_counter = 0;
$this->logger->logInfo("Expanding " . ($total_expanded + 1) . " of " . count($links_to_expand) . " (" . $link->url . ")", __METHOD__ . ',' . __LINE__);
//make sure shortened short links--like t.co--get fully expanded
$fully_expanded = false;
$short_link = $link->url;
while (!$fully_expanded) {
//begin Flickr thumbnail processing
if (isset($flickr_api_key) && substr($short_link, 0, strlen('http://flic.kr/')) == 'http://flic.kr/') {
self::expandFlickrThumbnail($flickr_api_key, $short_link, $link->url);
$has_expanded_flickr_link = true;
$fully_expanded = true;
}
//end Flickr thumbnail processing
$expanded_url = URLExpander::expandURL($short_link, $link->url, $index, count($links_to_expand), $this->link_dao, $this->logger);
if ($expanded_url == $short_link || $expanded_url == '' || $endless_loop_prevention_counter > self::EXPANSION_CAP) {
$fully_expanded = true;
} else {
$this->short_link_dao->insert($link->id, $short_link);
}
$short_link = $expanded_url;
$endless_loop_prevention_counter++;
}
if (!$has_expanded_flickr_link) {
if ($expanded_url != '') {
$image_src = URLProcessor::getImageSource($expanded_url);
$this->link_dao->saveExpandedUrl($link->url, $expanded_url, '', $image_src);
$total_expanded = $total_expanded + 1;
} else {
$this->logger->logError($link->url . " not a valid URL - relocates to nowhere", __METHOD__ . ',' . __LINE__);
$this->link_dao->saveExpansionError($link->url, "Invalid URL - relocates to nowhere");
$total_errors = $total_errors + 1;
}
}
} else {
$total_errors = $total_errors + 1;
$this->logger->logError($link->url . " not a valid URL", __METHOD__ . ',' . __LINE__);
$this->link_dao->saveExpansionError($link->url, "Invalid URL");
}
$has_expanded_flickr_link = false;
}
$this->logger->logUserSuccess($total_expanded . " URLs successfully expanded (" . $total_errors . " errors).", __METHOD__ . ',' . __LINE__);
}
function testSaveExpandedUrl()
{
$ldao = new LinkDAO($this->db, $this->logger);
$linkstoexpand = $ldao->getLinksToExpand();
$link = $linkstoexpand[0];
$ldao->saveExpandedUrl($link, "http://expandedurl.com");
$updatedlink = $ldao->getLinkByUrl($link);
$this->assertEqual($updatedlink->expanded_url, "http://expandedurl.com");
$ldao->saveExpandedUrl($link, "http://expandedurl1.com", 'my title');
$updatedlink = $ldao->getLinkByUrl($link);
$this->assertEqual($updatedlink->expanded_url, "http://expandedurl1.com");
$this->assertEqual($updatedlink->title, "my title");
$ldao->saveExpandedUrl($link, "http://expandedurl2.com", 'my title1', 1);
$updatedlink = $ldao->getLinkByUrl($link);
$this->assertEqual($updatedlink->expanded_url, "http://expandedurl2.com");
$this->assertEqual($updatedlink->title, "my title1");
$this->assertTrue($updatedlink->is_image);
}
function expandurls_crawl()
{
global $THINKTANK_CFG;
global $db;
global $conn;
$logger = new Logger($THINKTANK_CFG['log_location']);
$ldao = new LinkDAO($db, $logger);
$linkstoexpand = $ldao->getLinksToExpand();
$logger->logStatus(count($linkstoexpand) . " links to expand", "Expand URLs Plugin");
foreach ($linkstoexpand as $l) {
$eurl = untinyurl($l, $logger, $ldao);
if ($eurl != '') {
$ldao->saveExpandedUrl($l, $eurl);
}
}
$logger->logStatus("URL expansion complete for this run", "Expand URLs Plugin");
$logger->close();
# Close logging
}
