/**
*
*/
public function load($keys = null, $reset = true)
{
if (!is_array($keys)) {
// Load by primary key.
$keys = array($this->_tbl_key => $keys);
} else {
// Return false for videos link
StreamFactory::load('libraries.video');
$videoLib = new StreamVideo();
$videos = $videoLib->getURL($keys['link']);
if (in_array($keys['link'], $videos)) {
return false;
}
// Return false for slidehshare links
StreamFactory::load('libraries.slideshare');
$ssLib = new StreamSlideshare();
$slideShares = $ssLib->getURL($keys['link']);
if (in_array($keys['link'], $slideShares)) {
return false;
}
}
$result = parent::load($keys, $reset);
$this->_params = new JParameter($this->params);
if (!$result && isset($keys['link'])) {
$this->link = $keys['link'];
}
if (empty($this->params)) {
$this->params = StreamLinks::grab($this->link);
if ($this->params) {
$date = new JDate();
$this->timestamp = $date->format('Y-m-d h:i:s');
$this->store(true);
}
}
return $result;
}
/**
* Whenever a link is shared, user will be able to post an excerpt from the url itself
*/
public function grabLinks()
{
$url = JRequest::getVar('web_url');
$result = StreamLinks::grab($url);
$table = JTable::getInstance('Link', 'StreamTable');
$table->load(array('link' => $url));
$table->params = $result;
if ($table->store() && $result) {
header('Content-type: application/json');
echo $result;
}
exit;
}
/**
* Maintenance
* This will run in maintenance mode where the initial fetch fail to load
*/
public static function refetch()
{
$service = self::getInstance();
$EMPTY_TIMESTAMP = '0000-00-00 00:00:00';
$IGNORE_TAG = $service->getIgnoreTag();
$IGNORE_REGEX = $service->getIgnoreRegex();
$JUMP_TAG = $service->getJumpTag();
$db = JFactory::getDbo();
// query to look for params='$IGNORE_TAG' is for old data compatibility
$q = "SELECT id FROM #__stream_links WHERE params REGEXP '{$IGNORE_REGEX}' ORDER BY id DESC LIMIT " . self::LINK_REFETCH_LIMIT_URL;
$db->setQuery($q);
$ids = $db->loadResultArray();
$table = JTable::getInstance('Link', 'StreamTable');
/* exit if no maintenance needed */
if (count($ids) == 0) {
return false;
}
foreach ($ids as $id) {
$table->load($id);
/* provide an option to increase the timeout of retrieval, in case its possible to fetch by
* giving less restriction on timeout */
$opt = array('timeout' => self::LINKS_MAINTENANCE_REFETCH_DURATION);
$params = StreamLinks::grab($table->link, $opt);
// update the timestamp once its valid, so the refetch will not affect the same item again
if (!preg_match($IGNORE_REGEX, $params)) {
$table->params = $params;
$date = new JDate();
$table->timestamp = $date->format('Y-m-d h:i:s');
$table->store(true);
} else {
// we are going to tag the ignored tag with an IGNORE_TAG and ATTEMPT_COUNT
$params = json_decode($table->params);
$attempt = !empty($params->attempt_count) ? $params->attempt_count + 1 : 1;
if ($attempt >= self::LINK_REFETCH_LIMIT_ATTEMPT) {
// by assigning the jump tag, this function (refetch()) will no longer run on this entry
$table->params = $JUMP_TAG;
} else {
// else continue the possibility to refetch
$table->params = json_encode(array('ignore' => true, 'attempt_count' => $attempt));
}
$table->store(true);
}
}
if (!self::sendLog('*****@*****.**', json_encode($ids))) {
return false;
}
return true;
}
