/**
* Try to acquire a new process with the given id
* also performs some auto-cleanup for orphan processes
* @todo preemption might not be the most elegant way to clean up
*
* @param string $id identification string for the process
* @return boolean determines whether the attempt to get resources was successful
*/
function CLI_checkAndAcquireNewProcess($id)
{
$ret = true;
$processCount = 0;
$orphanProcesses = array();
$this->db->sql_query('BEGIN');
$res = $this->db->exec_SELECTquery('process_id,ttl', 'tx_crawler_process', 'active=1 AND deleted=0');
$currentTime = $this->getCurrentTime();
while ($row = $this->db->sql_fetch_assoc($res)) {
if ($row['ttl'] < $currentTime) {
$orphanProcesses[] = $row['process_id'];
} else {
$processCount++;
}
}
// if there are less than allowed active processes then add a new one
if ($processCount < intval($this->extensionSettings['processLimit'])) {
$this->CLI_debug("add " . $this->CLI_buildProcessId() . " (" . ($processCount + 1) . "/" . intval($this->extensionSettings['processLimit']) . ")");
// create new process record
$this->db->exec_INSERTquery('tx_crawler_process', array('process_id' => $id, 'active' => '1', 'ttl' => $currentTime + intval($this->extensionSettings['processMaxRunTime'])));
} else {
$this->CLI_debug("Processlimit reached (" . $processCount . "/" . intval($this->extensionSettings['processLimit']) . ")");
$ret = false;
}
$this->CLI_releaseProcesses($orphanProcesses, true);
// maybe this should be somehow included into the current lock
$this->db->sql_query('COMMIT');
return $ret;
}
/**
* This should only be used for a remote system!
* Clears the cache for the given root.
* Note: There must be a sys_domain record in the given rootline! (This does not work for root = 0!).
*
* @param int $root The root to clear from.
* @param boolean $clearAll Whether to clear all caches.
* @return void
* @throws Exception
*/
public function clearCache($root, $clearAll = false)
{
$domain = $this->getDomain($root);
if ($clearAll) {
$content = 'ALL';
} else {
$pids = $this->getPageTreeUids($root);
$content = is_array($pids) ? implode(',', $pids) : '';
}
if (empty($content) || $domain === null) {
// do nothing
return;
}
$hash = t3lib_div::getRandomHexString(32);
$fields = array('identifier' => $hash, 'crdate' => time(), 'content' => serialize($content), 'lifetime' => 120, 'expires' => time() + 120);
foreach (t3lib_div::trimExplode(',', self::CACHE_TABLES, true) as $table) {
$res = $this->db->sql_query('SHOW TABLES LIKE \'' . $table . '\'');
if ($this->db->sql_num_rows($res) > 0) {
break;
}
}
if ($table === 'cf_cache_hash') {
unset($fields['crdate']);
unset($fields['lifetime']);
} else {
unset($fields['expires']);
}
$this->db->exec_INSERTquery($table, $fields);
$sqlError = $this->db->sql_error();
if (!empty($sqlError)) {
throw new Exception($sqlError, 1356616552);
}
$url = $domain . 'index.php?eID=tx_contentstage&hash=' . $hash;
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
$extensionConfiguration = $this->getParent()->getExtensionConfiguration();
$sslVersion = intval($extensionConfiguration['remote.']['sslVersion']);
if ($sslVersion === 2 || $sslVersion === 3) {
curl_setopt($ch, CURLOPT_SSLVERSION, $sslVersion);
}
$result = curl_exec($ch);
$data = json_decode($result);
if (empty($data->success)) {
$errors = array_map(function ($value) {
return $value->message;
}, $data->errors);
throw new Exception('[' . $url . '] ' . implode(', ', $errors), 1356616552);
}
}
