/**
* Request a ping from a journal.
*
* @todo Use the Ping service
*
* @param Journal $journal
*
* @return bool
*/
protected function pingJournal(Journal $journal)
{
$client = new Client();
try {
$response = $client->get($journal->getGatewayUrl());
if ($response->getStatusCode() !== 200) {
return false;
}
$xml = $response->xml();
$element = $xml->xpath('//terms')[0];
if ($element && isset($element['termsAccepted']) && (string) $element['termsAccepted'] === 'yes') {
return true;
}
} catch (RequestException $e) {
$this->logger->error("Cannot ping {$journal->getUrl()}: {$e->getMessage()}");
if ($e->hasResponse()) {
$this->logger->error($e->getResponse()->getStatusCode() . ' ' . $this->logger->error($e->getResponse()->getReasonPhrase()));
}
} catch (XmlParseException $e) {
$this->logger->error("Cannot parse journal ping response {$journal->getUrl()}: {$e->getMessage()}");
}
return false;
}
/**
* Fetch the service document by HTTP.
*
* @param Journal $journal
*
* @throws RequestException
*/
public function serviceDocument(Journal $journal)
{
$client = $this->getClient();
$headers = array('On-Behalf-Of' => $this->serverUuid, 'Journal-Url' => $journal->getUrl());
try {
$response = $client->get($this->sdIri, ['headers' => $headers]);
} catch (RequestException $e) {
$this->logger->critical($e->getMessage());
if ($e->hasResponse()) {
$xml = $e->getResponse()->xml();
$xml->registerXPathNamespace('atom', 'http://www.w3.org/2005/Atom');
$this->logger->critical((string) $xml->xpath('//atom:summary')[0]);
}
throw $e;
}
$xml = new SimpleXMLElement($response->getBody());
$this->namespaces->registerNamespaces($xml);
$this->maxUpload = (string) $xml->xpath('sword:maxUploadSize')[0];
$this->uploadChecksum = (string) $xml->xpath('lom:uploadChecksumType')[0];
$this->siteName = (string) $xml->xpath('.//atom:title')[0];
$this->colIri = (string) $xml->xpath('.//app:collection/@href')[0];
}
