Inheritance diagram for ilLTIAppEventListener:

Collaboration diagram for ilLTIAppEventListener:

Static Public Member Functions

static handleEvent ($a_component, $a_event, $a_parameter)

Handle an event in a listener.

Parameters

string	$a_component	component, e.g. "Modules/Forum" or "Services/User"
string	$a_event	event e.g. "createUser", "updateUser", "deleteUser", ...
array	$a_parameter	parameter array (assoc), array("name" => ..., "phone_office" => ...)

More...

static handleCronUpdate (ilDateTime $since)

static handleEvent ($a_component, $a_event, $a_parameter)

Handle an event in a listener. More...

Protected Member Functions
	__construct ()
	ilLTIAppEventListener constructor. More...

	handleUpdateStatus ($a_obj_id, $a_usr_id, $a_status, $a_percentage)
	Handle update status. More...

	doCronUpdate (ilDateTime $since)

	isLTIAuthMode ($auth_mode)

	tryOutcomeService ($resource, $ext_account, $a_status, $a_percentage)
	try outcome service More...

Static Protected Member Functions
static	getInstance ()

Private Attributes
	$logger = null

	$connector = null

Static Private Attributes
static	$instance = null

Detailed Description

Class ilLTIAppEventListener.

Definition at line 7 of file class.ilLTIAppEventListener.php.

Constructor & Destructor Documentation

◆ __construct()

ilLTIAppEventListener::__construct ( )

protected

ilLTIAppEventListener constructor.

Definition at line 28 of file class.ilLTIAppEventListener.php.

    {
        global $DIC;
 
        $this->logger = $DIC->logger()->lti();
        $this->connector = new ilLTIDataConnector();
    }

References $DIC.

Member Function Documentation

◆ doCronUpdate()

ilLTIAppEventListener::doCronUpdate ( ilDateTime $since )

protected

Parameters

ilDateTime $since

Exceptions

ilDateTimeException

Definition at line 81 of file class.ilLTIAppEventListener.php.

    {
        $this->logger->debug('Starting cron update for lti outcome service');
 
        $resources = $this->connector->lookupResourcesForAllUsersSinceDate($since);
        foreach ($resources as $consumer_ext_account => $user_resources) {
            list($consumer, $ext_account) = explode('__', $consumer_ext_account, 2);
 
            $login = ilObjUser::_checkExternalAuthAccount('lti_' . $consumer, $ext_account);
            if (!$login) {
                $this->logger->info('No user found for lti_' . $consumer . ' -> ' . $ext_account);
                continue;
            }
            $usr_id = ilObjUser::_lookupId($login);
            foreach ($user_resources as $resource_info) {
                $this->logger->debug('Found resource: ' . $resource_info);
                list($resource_id, $resource_ref_id) = explode('__', $resource_info);
 
                // lookup lp status
                $status = ilLPStatus::_lookupStatus(
                    ilObject::_lookupObjId($resource_ref_id),
                    $usr_id
                );
                $percentage = ilLPStatus::_lookupPercentage(
                    ilObject::_lookupObjId($resource_ref_id),
                    $usr_id
                );
                $this->tryOutcomeService($resource_id, $ext_account, $status, $percentage);
            }
        }
    }

References $consumer, ilObjUser\_checkExternalAuthAccount(), ilObjUser\_lookupId(), ilObject\_lookupObjId(), ilLPStatus\_lookupPercentage(), ilLPStatus\_lookupStatus(), and tryOutcomeService().

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◆ getInstance()

static ilLTIAppEventListener::getInstance ( )

staticprotected

Returns: \ilLTIAppEventListener

Definition at line 39 of file class.ilLTIAppEventListener.php.

    {
        if (!self::$instance instanceof \ilLTIAppEventListener) {
            self::$instance = new self();
        }
        return self::$instance;
    }

References $instance.

Referenced by handleCronUpdate(), and handleEvent().

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◆ handleCronUpdate()

static ilLTIAppEventListener::handleCronUpdate ( ilDateTime $since )

static

Parameters

ilDateTime $since

Returns: bool

Exceptions

ilDateTimeException

Definition at line 187 of file class.ilLTIAppEventListener.php.

    {
        $listener = self::getInstance();
        $listener->doCronUpdate($since);
        return true;
    }

References getInstance().

Referenced by ilLTICronOutcomeService\run().

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◆ handleEvent()

static ilLTIAppEventListener::handleEvent	(	$a_component,
		$a_event,
		$a_parameter
	)

static

Handle an event in a listener.

Parameters

string	$a_component	component, e.g. "Modules/Forum" or "Services/User"
string	$a_event	event e.g. "createUser", "updateUser", "deleteUser", ...
array	$a_parameter	parameter array (assoc), array("name" => ..., "phone_office" => ...)

Implements ilAppEventListener.

Definition at line 161 of file class.ilLTIAppEventListener.php.

    {
        global $DIC;
 
        $logger = $DIC->logger()->lti()->debug('Handling event: ' . $a_event . ' from ' . $a_component);
 
        switch ($a_component) {
            case 'Services/Tracking':
                if ($a_event == 'updateStatus') {
                    $listener = self::getInstance();
                    $listener->handleUpdateStatus(
                        $a_parameter['obj_id'],
                        $a_parameter['usr_id'],
                        $a_parameter['status'],
                        $a_parameter['percentage']
                    );
                }
                break;
        }
    }

References $DIC, $logger, and getInstance().

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◆ handleUpdateStatus()

ilLTIAppEventListener::handleUpdateStatus	(	$a_obj_id,
		$a_usr_id,
		$a_status,
		$a_percentage
	)

protected

Handle update status.

Definition at line 51 of file class.ilLTIAppEventListener.php.

    {
        $this->logger->debug('Handle update status');
        $auth_mode = ilObjUser::_lookupAuthMode($a_usr_id);
        if (!$this->isLTIAuthMode($auth_mode)) {
            $this->logger->debug('Ignoring update for non-LTI-user.');
            return false;
        }
        $ext_account = ilObjUser::_lookupExternalAccount($a_usr_id);
        list($lti, $consumer) = explode('_', $auth_mode);
 
        // iterate through all references
        $refs = ilObject::_getAllReferences($a_obj_id);
        foreach ((array) $refs as $ref_id) {
            $resources = $this->connector->lookupResourcesForUserObjectRelation(
                $ref_id,
                $ext_account,
                $consumer
            );
            foreach ($resources as $resource) {
                $this->tryOutcomeService($resource, $ext_account, $a_status, $a_percentage);
            }
        }
    }

References $consumer, ilObject\_getAllReferences(), ilObjUser\_lookupAuthMode(), ilObjUser\_lookupExternalAccount(), isLTIAuthMode(), and tryOutcomeService().

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◆ isLTIAuthMode()

ilLTIAppEventListener::isLTIAuthMode ( $auth_mode )

protected

Parameters

$a_usr_id

Returns: bool

Definition at line 117 of file class.ilLTIAppEventListener.php.

    {
        return strpos($auth_mode, 'lti_') === 0;
    }

Referenced by handleUpdateStatus().

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◆ tryOutcomeService()

ilLTIAppEventListener::tryOutcomeService	(	$resource,
		$ext_account,
		$a_status,
		$a_percentage
	)

protected

try outcome service

Definition at line 126 of file class.ilLTIAppEventListener.php.

    {
        $resource_link = \IMSGlobal\LTI\ToolProvider\ResourceLink::fromRecordId($resource, $this->connector);
        if (!$resource_link->hasOutcomesService()) {
            $this->logger->debug('No outcome service available for resource id: ' . $resource);
            return false;
        }
        $user = \IMSGlobal\LTI\ToolProvider\User::fromResourceLink($resource_link, $ext_account);
 
        if ($a_status == ilLPStatus::LP_STATUS_COMPLETED_NUM) {
            $score = 1;
        } elseif (
            $a_status == ilLPStatus::LP_STATUS_FAILED_NUM ||
            $a_status == ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM
        ) {
            $score = 0;
        } elseif (!$a_percentage) {
            $score = 0;
        } else {
            $score = (int) $a_percentage / 100;
        }
 
        $outcome = new \IMSGlobal\LTI\ToolProvider\Outcome($score);
 
        $resource_link->doOutcomesService(
            \IMSGlobal\LTI\ToolProvider\ResourceLink::EXT_WRITE,
            $outcome,
            $user
        );
    }