/**
* Prepares the sets view.
*
* @return void
*/
public function setsAction()
{
// Get the available OAI-PMH to Omeka maps, which should correspond to
// OAI-PMH metadata formats.
$maps = $this->_getMaps();
$waitTime = oaipmh_harvester_config('requestThrottleSecs', 5);
if ($waitTime) {
$request = new OaipmhHarvester_Request_Throttler(new OaipmhHarvester_Request($this->_getParam('base_url')), array('wait' => $waitTime));
} else {
$request = new OaipmhHarvester_Request($this->_getParam('base_url'));
}
// Catch errors such as "String could not be parsed as XML"
$extraMsg = 'Please check to be certain the URL is correctly formatted ' . 'for OAI-PMH harvesting.';
try {
$metadataFormats = $request->listMetadataFormats();
} catch (Zend_Uri_Exception $e) {
$errorMsg = "Invalid URL given. {$extraMsg}";
} catch (Zend_Http_Client_Exception $e) {
$errorMsg = $e->getMessage() . " {$extraMsg}";
} catch (OaipmhHarvester_Request_ThrottlerException $e) {
$errorMsg = $e->getMessage();
}
if (isset($errorMsg)) {
$this->_helper->flashMessenger($errorMsg, 'error');
return $this->_helper->redirector->goto('index');
}
/* Compare the available OAI-PMH metadataFormats with the available
Omeka maps and extract only those that are common to both.
The comparison is made between the metadata schemata, not the prefixes.
*/
$availableMaps = array_intersect($maps, $metadataFormats);
// For a data provider that uses a resumption token for sets, see:
// http://www.ajol.info/oai/
$response = $request->listSets($this->_getParam('resumption_token'));
// Set the variables to the view object.
$this->view->availableMaps = array_combine(array_keys($availableMaps), array_keys($availableMaps));
$this->view->sets = $response['sets'];
$this->view->resumptionToken = array_key_exists('resumptionToken', $response) ? $response['resumptionToken'] : false;
$this->view->baseUrl = $this->_getParam('base_url');
// Watch out for injection!
$this->view->maps = $maps;
}
public function perform()
{
if ($memoryLimit = oaipmh_harvester_config('memoryLimit')) {
ini_set('memory_limit', $memoryLimit);
}
// Set the set.
$harvest = $this->_db->getTable('OaipmhHarvester_Harvest')->find($this->_harvestId);
if (!$harvest) {
throw new UnexpectedValueException("Harvest with id = '{$this->_harvestId}' does not exist.");
}
// Resent jobs can remain queued after all the items themselves have
// been deleted. Skip if that's the case.
if ($harvest->status == OaipmhHarvester_Harvest::STATUS_DELETED) {
_log("Queued harvest with ID = {$harvest->id} was deleted prior " . "to running this job.");
return;
}
require_once 'OaipmhHarvester/Harvest/Abstract.php';
$harvester = OaipmhHarvester_Harvest_Abstract::factory($harvest);
$harvester->harvest();
if ($harvest->isResumable() && !$harvest->isError()) {
$this->resend();
}
}
