drupal-civicrm/sites/all/modules/civicrm/Civi/API/Events.php
2018-01-14 13:10:16 +00:00

121 lines
3.8 KiB
PHP

<?php
/*
+--------------------------------------------------------------------+
| CiviCRM version 4.7 |
+--------------------------------------------------------------------+
| Copyright CiviCRM LLC (c) 2004-2017 |
+--------------------------------------------------------------------+
| This file is a part of CiviCRM. |
| |
| CiviCRM is free software; you can copy, modify, and distribute it |
| under the terms of the GNU Affero General Public License |
| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
| |
| CiviCRM is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public |
| License and the CiviCRM Licensing Exception along |
| with this program; if not, contact CiviCRM LLC |
| at info[AT]civicrm[DOT]org. If you have questions about the |
| GNU Affero General Public License or the licensing of CiviCRM, |
| see the CiviCRM license FAQ at http://civicrm.org/licensing |
+--------------------------------------------------------------------+
*/
namespace Civi\API;
/**
* The API kernel dispatches a series of events while processing each API request.
* For a successful API request, the sequence is RESOLVE => AUTHORIZE => PREPARE => RESPOND.
* If an exception arises in any stage, then the sequence is aborted and the EXCEPTION
* event is dispatched.
*
* Event subscribers which are concerned about the order of execution should assign
* a weight to their subscription (such as W_EARLY, W_MIDDLE, or W_LATE).
* W_LATE).
*/
class Events {
/**
* Determine whether the API request is allowed for the current user.
* For successful execution, at least one listener must invoke
* $event->authorize().
*
* @see AuthorizeEvent
*/
const AUTHORIZE = 'civi.api.authorize';
/**
* Determine which API provider executes the given request. For successful
* execution, at least one listener must invoke
* $event->setProvider($provider).
*
* @see ResolveEvent
*/
const RESOLVE = 'civi.api.resolve';
/**
* Apply pre-execution logic
*
* @see PrepareEvent
*/
const PREPARE = 'civi.api.prepare';
/**
* Apply post-execution logic
*
* @see RespondEvent
*/
const RESPOND = 'civi.api.respond';
/**
* Handle any exceptions.
*
* @see ExceptionEvent
*/
const EXCEPTION = 'civi.api.exception';
/**
* Weight - Early
*/
const W_EARLY = 100;
/**
* Weight - Middle
*/
const W_MIDDLE = 0;
/**
* Weight - Late
*/
const W_LATE = -100;
/**
* @return array<string>
*/
public static function allEvents() {
return array(
self::AUTHORIZE,
self::EXCEPTION,
self::PREPARE,
self::RESOLVE,
self::RESPOND,
);
}
/**
* @param \Civi\Core\Event\GenericHookEvent $e
* @see \CRM_Utils_Hook::eventDefs
*/
public static function hookEventDefs($e) {
$e->inspector->addEventClass(self::AUTHORIZE, 'Civi\API\Event\AuthorizeEvent');
$e->inspector->addEventClass(self::EXCEPTION, 'Civi\API\Event\ExceptionEvent');
$e->inspector->addEventClass(self::PREPARE, 'Civi\API\Event\PrepareEvent');
$e->inspector->addEventClass(self::RESOLVE, 'Civi\API\Event\ResolveEvent');
$e->inspector->addEventClass(self::RESPOND, 'Civi\API\Event\RespondEvent');
}
}