/**
* Check cache and purge outdated files
* This method looks for files older than the cache_expire set in the
* mdb_config and removes them
* @TODO add a limit on how frequently a purge can occur
*/
public function purge()
{
$cacheDir = $this->config->cachedir;
$this->logger->debug("[Cache] Purging old cache entries");
if (is_dir($cacheDir)) {
if (is_writable($cacheDir)) {
$thisdir = dir($cacheDir);
$now = time();
while ($file = $thisdir->read()) {
if ($file != "." && $file != "..") {
$fname = $cacheDir . $file;
if (is_dir($fname)) {
continue;
}
$mod = filemtime($fname);
if ($mod && $now - $mod > $this->config->cache_expire) {
unlink($fname);
}
}
}
} elseif (!empty($cacheDir)) {
$this->logger->critical("[Cache] Cache directory [{$cacheDir}] lacks write permission - purge aborted.");
}
} elseif (!empty($cacheDir)) {
$this->logger->critical("[Cache] Cache directory [{$cacheDir}] does not exist - purge aborted.");
}
}
/**
* Request the page from IMDb
* @param $url
* @return string Page html. Empty string on failure
*/
protected function requestPage($url)
{
$this->logger->info("[Page] Requesting [{$url}]");
$req = new MDB_Request($url, $this->config);
if (!$req->sendRequest()) {
$this->logger->error("[Page] Failed to connect to server when requesting url [{$url}]");
return '';
}
if (200 == $req->getStatus()) {
return $req->getResponseBody();
} elseif ($redirectUrl = $req->getRedirect()) {
$this->logger->debug("[Page] Following redirect from [{$url}] to [{$redirectUrl}]");
return $this->requestPage($redirectUrl);
} else {
$this->logger->error("[Page] Failed to retrieve url [{url}]. Response headers:{headers}", array('url' => $url, 'headers' => $req->getLastResponseHeaders()));
return '';
}
}
/**
* Check cache and purge outdated files
* This method looks for files older than the cache_expire set in the
* mdb_config and removes them
* @TODO add a limit on how frequently a purge can occur
*/
public function purge()
{
$cacheDir = $this->config->cachedir;
$this->logger->debug("[Cache] Purging old cache entries");
$thisdir = dir($cacheDir);
$now = time();
while ($file = $thisdir->read()) {
if ($file != "." && $file != "..") {
$fname = $cacheDir . $file;
if (is_dir($fname)) {
continue;
}
$mod = filemtime($fname);
if ($mod && $now - $mod > $this->config->cache_expire) {
unlink($fname);
}
}
}
}
protected function debug_html($html)
{
$this->logger->error(htmlentities($html));
}