/**
* Either displays the currently associated delivery
* or calls selectDelivery in order to allow the user to select a delivery
*
* Only accessible to LTI instructors
*/
public function configureDelivery()
{
$compiledDelivery = LTIDeliveryTool::singleton()->getDeliveryFromLink();
if (is_null($compiledDelivery)) {
$this->selectDelivery();
} else {
$this->redirect(_url('showDelivery', null, null, array('uri' => $compiledDelivery->getUri())));
}
}
public function repeat()
{
$delivery = new \core_kernel_classes_Resource($this->getRequestParameter('delivery'));
// is allowed?
// is active?
$remoteLink = \taoLti_models_classes_LtiService::singleton()->getLtiSession()->getLtiLinkResource();
$userId = \common_session_SessionManager::getSession()->getUserUri();
$newExecution = LTIDeliveryTool::singleton()->startDelivery($delivery, $remoteLink, $userId);
$this->redirect(_url('runDeliveryExecution', null, null, array('deliveryExecution' => $newExecution->getIdentifier())));
}
/**
* Displays the LTI link for the consumer with respect to the currently selected delviery
* at tdelviery level, checks if the delviery is related to a resultserver cofnigured with the correct outcome service impelmentation
* @author patrick <*****@*****.**>
*/
public function index()
{
$feedBackMessage = '';
//checks the constraint for the results handling, depends on taoResultServer, taoLtiBasicOutcome
$selectedDelivery = new core_kernel_classes_Resource(tao_helpers_Uri::decode($this->getRequestParameter('uri')));
try {
$resultServer = $selectedDelivery->getUniquePropertyValue(new core_kernel_classes_Property(TAO_DELIVERY_RESULTSERVER_PROP));
} catch (Exception $e) {
$feedBackMessage = __("The delivery is not associated to a Result server storage policy");
}
$this->setData('launchUrl', LTIDeliveryTool::singleton()->getLaunchUrl(array('delivery' => $selectedDelivery->getUri())));
if (!empty($feedBackMessage)) {
$this->setData('warning', $feedBackMessage);
}
$class = new core_kernel_classes_Class(CLASS_LTI_CONSUMER);
$this->setData('consumers', $class->getInstances());
$this->setData('deliveryLabel', $selectedDelivery->getLabel());
$this->setView('linkManagement.tpl', 'ltiDeliveryProvider');
}
public function deliveriesByProctor()
{
$deliveryData = array();
if (\common_ext_ExtensionsManager::singleton()->isInstalled('ltiDeliveryProvider')) {
/** @var DeliveryService $service */
$service = $this->getServiceManager()->get(DeliveryService::CONFIG_ID);
$deliveries = $service->getAccessibleDeliveries();
if (!empty($deliveries)) {
try {
$dataStore = new \tao_models_classes_oauth_DataStore();
$test_consumer = $dataStore->lookup_consumer('proctoring_key');
} catch (\tao_models_classes_oauth_Exception $e) {
$secret = uniqid('proctoring_');
\taoLti_models_classes_ConsumerService::singleton()->getRootClass()->createInstanceWithProperties(array(RDFS_LABEL => 'proctoring', PROPERTY_OAUTH_KEY => 'proctoring_key', PROPERTY_OAUTH_SECRET => $secret));
$test_consumer = new \OAuthConsumer('proctoring_key', $secret);
}
$session = \common_session_SessionManager::getSession();
$ltiData = array('lti_message_type' => 'basic-lti-launch-request', 'lti_version' => 'LTI-1p0', 'resource_link_id' => rand(0, 9999999), 'resource_link_title' => 'Launch Title', 'resource_link_label' => 'Launch label', 'context_title' => 'Launch Title', 'context_label' => 'Launch label', 'user_id' => $session->getUserUri(), 'roles' => 'Learner', 'lis_person_name_full' => $session->getUserLabel(), 'tool_consumer_info_product_family_code' => PRODUCT_NAME, 'tool_consumer_info_version' => TAO_VERSION, 'custom_skip_thankyou' => 'true', 'launch_presentation_return_url' => _url('logout', 'Main', 'tao'));
$hmac_method = new \OAuthSignatureMethod_HMAC_SHA1();
$test_token = new \OAuthToken($test_consumer, '');
foreach ($deliveries as $delivery) {
$launchUrl = LTIDeliveryTool::singleton()->getLaunchUrl(array('delivery' => $delivery->getUri()));
$acc_req = \OAuthRequest::from_consumer_and_token($test_consumer, $test_token, 'GET', $launchUrl, $ltiData);
$acc_req->sign_request($hmac_method, $test_consumer, $test_token);
$deliveryData[] = array('id' => $delivery->getUri(), 'label' => $delivery->getLabel(), 'url' => $acc_req->to_url(), 'text' => __('Test'));
}
}
}
$this->setData('title', __('Available Deliveries'));
if (\tao_helpers_Request::isAjax()) {
$this->returnJson(array('list' => $deliveryData));
} else {
try {
$testCenter = $this->getCurrentTestCenter();
$this->composeView('diagnostic-deliveries', array('list' => $deliveryData), array(BreadcrumbsHelper::testCenters(), BreadcrumbsHelper::testCenter($testCenter, TestCenterHelper::getTestCenters()), BreadcrumbsHelper::diagnostics($testCenter, array(BreadcrumbsHelper::deliveries($testCenter))), BreadcrumbsHelper::deliveriesByProctor($testCenter)));
} catch (\common_Exception $e) {
$this->composeView('diagnostic-deliveries', array('list' => $deliveryData), array(BreadcrumbsHelper::testCenters()));
}
}
}
/**
* return a LTI link URI from a valid delivery id
* @author Christophe GARCIA <*****@*****.**>
*/
public function getUrl()
{
try {
if ($this->getRequestMethod() != \Request::HTTP_GET) {
throw new \common_exception_NotImplemented('Only GET method is accepted to request this service.');
}
if (!$this->hasRequestParameter('deliveryId')) {
$this->returnFailure(new \common_exception_MissingParameter('At least one mandatory parameter was required but found missing in your request'));
}
$selectedDelivery = new \core_kernel_classes_Resource($this->getRequestParameter('deliveryId'));
if (!$selectedDelivery->isInstanceOf(new \core_kernel_classes_Class(TAO_DELIVERY_CLASS))) {
$this->returnFailure(new \common_exception_NotFound('Delivery not found'));
}
try {
$selectedDelivery->getUniquePropertyValue(new \core_kernel_classes_Property(\TAO_DELIVERY_RESULTSERVER_PROP));
} catch (Exception $e) {
$this->returnFailure(new \common_exception_BadRequest('The delivery is not associated to a Result server storage policy'));
}
$this->returnSuccess(LTIDeliveryTool::singleton()->getLaunchUrl(array('delivery' => $selectedDelivery->getUri())));
} catch (Exception $ex) {
$this->returnFailure($ex);
}
}
/**
* Returns the delivery associated with the current link
* either from url or from the remote_link if configured
* returns null if none found
*
* @return core_kernel_classes_Resource
*/
private function getDelivery()
{
$returnValue = null;
//passed as aprameter
if ($this->hasRequestParameter('delivery')) {
$returnValue = new core_kernel_classes_Resource($this->getRequestParameter('delivery'));
} else {
$launchData = taoLti_models_classes_LtiService::singleton()->getLtiSession()->getLaunchData();
$deliveryUri = $launchData->getCustomParameter('delivery');
if (!is_null($deliveryUri)) {
$returnValue = new core_kernel_classes_Resource($deliveryUri);
} else {
// stored in link
$returnValue = LTIDeliveryTool::singleton()->getDeliveryFromLink();
}
}
return $returnValue;
}
