Merge pull request #58 from nextcloud-gmbh/network-request-queue

Priority, Queue and Async

appinfo/database.xml

@@ -268,6 +268,13 @@
 				<primary>true</primary>
 			</field>
 
+			<field>
+				<name>type</name>
+				<type>text</type>
+				<length>31</length>
+				<notnull>true</notnull>
+			</field>
+
 			<field>
 				<name>account</name>
 				<type>text</type>
@@ -461,5 +468,79 @@
 		</declaration>
 	</table>
 
+	<table>
+		<name>*dbprefix*social_request_queue</name>
+		<declaration>
+
+			<field>
+				<name>id</name>
+				<type>integer</type>
+				<length>11</length>
+				<unsigned>true</unsigned>
+				<notnull>true</notnull>
+				<autoincrement>true</autoincrement>
+				<primary>true</primary>
+			</field>
+
+			<field>
+				<name>token</name>
+				<type>text</type>
+				<length>63</length>
+				<notnull>true</notnull>
+			</field>
+
+			<field>
+				<name>author</name>
+				<type>text</type>
+				<length>1270</length>
+				<notnull>true</notnull>
+			</field>
+
+			<field>
+				<name>activity</name>
+				<type>text</type>
+				<length>6000</length>
+				<notnull>true</notnull>
+			</field>
+
+			<field>
+				<name>instance</name>
+				<type>text</type>
+				<length>500</length>
+				<notnull>false</notnull>
+			</field>
+
+			<field>
+				<name>priority</name>
+				<type>integer</type>
+				<length>1</length>
+				<default>0</default>
+				<notnull>false</notnull>
+			</field>
+
+			<field>
+				<name>status</name>
+				<type>integer</type>
+				<length>1</length>
+				<default>0</default>
+				<notnull>false</notnull>
+			</field>
+
+			<field>
+				<name>tries</name>
+				<type>integer</type>
+				<length>2</length>
+				<default>0</default>
+				<notnull>false</notnull>
+			</field>
+
+			<field>
+				<name>last</name>
+				<type>timestamp</type>
+			</field>
+
+		</declaration>
+	</table>
+
 </database>
 

appinfo/info.xml

@@ -5,7 +5,7 @@
 	<name>Social</name>
 	<summary>🎉 Nextcloud becomes part of the federated social networks!</summary>
 	<description><![CDATA[test]]></description>
-	<version>0.0.43</version>
+	<version>0.0.50</version>
 	<licence>agpl</licence>
 	<author mail="maxence@artificial-owl.com">Maxence Lange</author>
 	<author mail="jus@bitgrid.net">Julius Härtl</author>
@@ -32,6 +32,7 @@
 
 	<commands>
 		<command>OCA\Social\Command\CacheRefresh</command>
+		<command>OCA\Social\Command\QueueStatus</command>
 		<command>OCA\Social\Command\NoteCreate</command>
 	</commands>
 

appinfo/routes.php

@@ -1,12 +1,39 @@
 <?php
+declare(strict_types=1);
+
+
 /**
- * Create your routes in here. The name is the lowercase name of the controller
- * without the controller part, the stuff after the hash is the method.
- * e.g. page#index -> OCA\MailTest\Controller\PageController->index()
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
- * The controller class has to be registered in the application.php file since
- * it's instantiated in there
  */
+
+
+namespace OCA\Social\AppInfo;
+
+
+use OCA\Social\Service\CurlService;
+
+
 return [
 	'routes' => [
 		['name' => 'Navigation#navigate', 'url' => '/', 'verb' => 'GET'],
@@ -52,6 +79,8 @@ return [
 		['name' => 'Local#actorInfo', 'url' => '/api/v1/actor/info', 'verb' => 'GET'],
 		['name' => 'Local#documentsCache', 'url' => '/api/v1/documents/cache', 'verb' => 'POST'],
 
+		['name' => 'Queue#asyncWithToken', 'url' => CurlService::ASYNC_TOKEN, 'verb' => 'POST'],
+
 		[
 			'name' => 'Config#setCloudAddress', 'url' => '/api/v1/config/cloudAddress',
 			'verb' => 'POST'

composer.lock

@@ -12,12 +12,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/daita/my-small-php-tools.git",
-                "reference": "fc822e4c08072844ad9d58846d407e83a62b3d38"
+                "reference": "ba839f3253672defc4bbb181493c78e2c96e272a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/daita/my-small-php-tools/zipball/fc822e4c08072844ad9d58846d407e83a62b3d38",
-                "reference": "fc822e4c08072844ad9d58846d407e83a62b3d38",
+                "url": "https://api.github.com/repos/daita/my-small-php-tools/zipball/ba839f3253672defc4bbb181493c78e2c96e272a",
+                "reference": "ba839f3253672defc4bbb181493c78e2c96e272a",
                 "shasum": ""
             },
             "require": {
@@ -40,7 +40,7 @@
                 }
             ],
             "description": "My small PHP Tools",
-            "time": "2018-11-20T22:42:57+00:00"
+            "time": "2018-11-27T14:31:43+00:00"
         }
     ],
     "packages-dev": [],

lib/Command/NoteCreate.php

@@ -135,10 +135,10 @@ class NoteCreate extends Base {
 		$post->setReplyTo(($replyTo === null) ? '' : $replyTo);
 		$post->addTo(($to === null) ? '' : $to);
 
-		$result = $this->postService->createPost($post, $activity);
+		$token = $this->postService->createPost($post, $activity);
 
 		echo 'object: ' . json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
-		echo 'result: ' . json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
+		echo 'token: ' . $token . "\n";
 	}
 
 }

lib/Command/QueueStatus.php

@@ -0,0 +1,110 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Command;
+
+use Exception;
+use OC\Core\Command\Base;
+use OCA\Social\Service\ConfigService;
+use OCA\Social\Service\MiscService;
+use OCA\Social\Service\QueueService;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+
+class QueueStatus extends Base {
+
+
+	/** @var ConfigService */
+	private $configService;
+
+	/** @var QueueService */
+	private $queueService;
+
+	/** @var MiscService */
+	private $miscService;
+
+
+	/**
+	 * NoteCreate constructor.
+	 *
+	 * @param QueueService $queueService
+	 * @param ConfigService $configService
+	 * @param MiscService $miscService
+	 */
+	public function __construct(
+		QueueService $queueService, ConfigService $configService, MiscService $miscService
+	) {
+		parent::__construct();
+
+		$this->queueService = $queueService;
+		$this->configService = $configService;
+		$this->miscService = $miscService;
+	}
+
+
+	/**
+	 *
+	 */
+	protected function configure() {
+		parent::configure();
+		$this->setName('social:queue:status')
+			 ->addOption(
+				 'token', 't', InputOption::VALUE_OPTIONAL, 'token of a request'
+			 )
+			 ->setDescription('Return status on the request queue');
+	}
+
+
+	/**
+	 * @param InputInterface $input
+	 * @param OutputInterface $output
+	 *
+	 * @throws Exception
+	 */
+	protected function execute(InputInterface $input, OutputInterface $output) {
+
+		$token = $input->getOption('token');
+
+		if ($token === null) {
+			throw new Exception('As of today, --token is mandatory');
+		}
+
+		$requests = $this->queueService->getRequestFromToken($token);
+
+		foreach ($requests as $request) {
+			$output->writeLn(json_encode($request));
+		}
+
+	}
+
+}
+

lib/Controller/LocalController.php

@@ -87,7 +87,7 @@ class LocalController extends Controller {
 
 
 	/**
-	 * NavigationController constructor.
+	 * LocalController constructor.
 	 *
 	 * @param IRequest $request
 	 * @param string $userId

lib/Controller/QueueController.php

@@ -0,0 +1,115 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Social\Controller;
+
+
+use daita\MySmallPhpTools\Traits\TAsync;
+use OCA\Social\AppInfo\Application;
+use OCA\Social\Exceptions\ActorDoesNotExistException;
+use OCA\Social\Exceptions\RequestException;
+use OCA\Social\Exceptions\SocialAppConfigException;
+use OCA\Social\Model\RequestQueue;
+use OCA\Social\Service\ActivityService;
+use OCA\Social\Service\CurlService;
+use OCA\Social\Service\MiscService;
+use OCA\Social\Service\QueueService;
+use OCP\AppFramework\Controller;
+use OCP\IRequest;
+
+
+/**
+ * Class QueueController
+ *
+ * @package OCA\Social\Controller
+ */
+class QueueController extends Controller {
+
+
+	use TAsync;
+
+	/** @var QueueService */
+	private $queueService;
+
+	/** @var ActivityService */
+	private $activityService;
+
+	/** @var MiscService */
+	private $miscService;
+
+
+	/**
+	 * QueueController constructor.
+	 *
+	 * @param IRequest $request
+	 * @param QueueService $queueService
+	 * @param ActivityService $activityService
+	 * @param MiscService $miscService
+	 */
+	public function __construct(
+		IRequest $request, QueueService $queueService, ActivityService $activityService,
+		MiscService $miscService
+	) {
+		parent::__construct(Application::APP_NAME, $request);
+
+		$this->queueService = $queueService;
+		$this->activityService = $activityService;
+		$this->miscService = $miscService;
+	}
+
+
+	/**
+	 * // TODO: Delete the NoCSRF check
+	 *
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 * @NoAdminRequired
+	 * @NoSubAdminRequired
+	 *
+	 * @param string $token
+	 */
+	public function asyncWithToken(string $token) {
+		$this->async();
+
+		$requests = $this->queueService->getRequestFromToken($token, RequestQueue::STATUS_STANDBY);
+		foreach ($requests as $request) {
+			try {
+				$this->activityService->manageRequest($request);
+			} catch (ActorDoesNotExistException $e) {
+			} catch (RequestException $e) {
+			} catch (SocialAppConfigException $e) {
+			}
+		}
+
+		// or it will feed the logs.
+		exit();
+	}
+
+}
+

lib/Db/ActorsRequestBuilder.php

@@ -113,6 +113,7 @@ class ActorsRequestBuilder extends CoreRequestBuilder {
 
 		$actor = new Person();
 		$actor->importFromDatabase($data);
+		$actor->setType('Person');
 		$actor->setInbox($actor->getId() . '/inbox')
 			  ->setOutbox($actor->getId() . '/outbox')
 			  ->setFollowers($actor->getId() . '/followers')

lib/Db/CacheActorsRequest.php

@@ -69,6 +69,7 @@ class CacheActorsRequest extends CacheActorsRequestBuilder {
 		$qb = $this->getCacheActorsInsertSql();
 		$qb->setValue('id', $qb->createNamedParameter($actor->getId()))
 		   ->setValue('account', $qb->createNamedParameter($actor->getAccount()))
+		   ->setValue('type', $qb->createNamedParameter($actor->getType()))
 		   ->setValue('local', $qb->createNamedParameter(($actor->isLocal()) ? '1' : '0'))
 		   ->setValue('following', $qb->createNamedParameter($actor->getFollowing()))
 		   ->setValue('followers', $qb->createNamedParameter($actor->getFollowers()))

lib/Db/CacheActorsRequestBuilder.php

@@ -78,7 +78,7 @@ class CacheActorsRequestBuilder extends CoreRequestBuilder {
 		/** @noinspection PhpMethodParametersCountMismatchInspection */
 		$qb->select(
 			'ca.id', 'ca.account', 'ca.following', 'ca.followers', 'ca.inbox',
-			'ca.shared_inbox', 'ca.outbox', 'ca.featured', 'ca.url',
+			'ca.shared_inbox', 'ca.outbox', 'ca.featured', 'ca.url', 'ca.type',
 			'ca.preferred_username', 'ca.name', 'ca.summary',
 			'ca.public_key', 'ca.local', 'ca.source', 'ca.creation'
 		)

lib/Db/CoreRequestBuilder.php

@@ -53,6 +53,8 @@ use OCP\IDBConnection;
 class CoreRequestBuilder {
 
 
+	const TABLE_REQUEST_QUEUE = 'social_request_queue';
+
 	const TABLE_SERVER_ACTORS = 'social_server_actors';
 	const TABLE_SERVER_NOTES = 'social_server_notes';
 	const TABLE_SERVER_FOLLOWS = 'social_server_follows';
@@ -158,6 +160,17 @@ class CoreRequestBuilder {
 	}
 
 
+	/**
+	 * Limit the request to the token
+	 *
+	 * @param IQueryBuilder $qb
+	 * @param string $token
+	 */
+	protected function limitToToken(IQueryBuilder &$qb, string $token) {
+		$this->limitToDBField($qb, 'token', $token);
+	}
+
+
 	/**
 	 * Limit the request to the ActorId
 	 *
@@ -262,10 +275,10 @@ class CoreRequestBuilder {
 	 * Limit the request to the status
 	 *
 	 * @param IQueryBuilder $qb
-	 * @param string $status
+	 * @param int $status
 	 */
-	protected function limitToStatus(IQueryBuilder &$qb, $status) {
-		$this->limitToDBField($qb, 'status', $status);
+	protected function limitToStatus(IQueryBuilder &$qb, int $status) {
+		$this->limitToDBFieldInt($qb, 'status', $status);
 	}
 
 
@@ -348,6 +361,14 @@ class CoreRequestBuilder {
 	}
 
 
+	/**
+	 * @param IQueryBuilder $qb
+	 */
+	protected function orderByPriority(IQueryBuilder &$qb) {
+		$qb->orderBy('priority', 'desc');
+	}
+
+
 	/**
 	 * @param IQueryBuilder $qb
 	 * @param string $field
@@ -474,6 +495,7 @@ class CoreRequestBuilder {
 
 //		/** @noinspection PhpMethodParametersCountMismatchInspection */
 		$qb->selectAlias('ca.id', 'cacheactor_id')
+		   ->selectAlias('ca.type', 'cacheactor_type')
 		   ->selectAlias('ca.account', 'cacheactor_account')
 		   ->selectAlias('ca.following', 'cacheactor_following')
 		   ->selectAlias('ca.followers', 'cacheactor_followers')

lib/Db/NotesRequestBuilder.php

@@ -177,7 +177,9 @@ class NotesRequestBuilder extends CoreRequestBuilder {
 		$instances = json_decode($data['instances'], true);
 		if (is_array($instances)) {
 			foreach ($instances as $instance) {
-				$note->addInstancePath(new InstancePath($instance['uri'], $instance['type']));
+				$instancePath = new InstancePath();
+				$instancePath->import($instance);
+				$note->addInstancePath($instancePath);
 			}
 		}
 

lib/Db/RequestQueueRequest.php

@@ -0,0 +1,199 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Db;
+
+
+use DateTime;
+use Exception;
+use OCA\Social\Exceptions\QueueStatusException;
+use OCA\Social\Model\RequestQueue;
+use OCA\Social\Service\QueueService;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+
+
+/**
+ * Class RequestQueueRequest
+ *
+ * @package OCA\Social\Db
+ */
+class RequestQueueRequest extends RequestQueueRequestBuilder {
+
+
+	/**
+	 * create a new Queue in the database.
+	 *
+	 * @param RequestQueue[] $queues
+	 *
+	 * @throws Exception
+	 */
+	public function multiple(array $queues) {
+		foreach ($queues as $queue) {
+			$this->create($queue);
+//			$qb->values(
+//				[
+//					'source'   => $qb->createNamedParameter($queue->getSource()),
+//					'activity' => $qb->createNamedParameter($queue->getActivity()),
+//					'instance' => $qb->createNamedParameter(
+//						json_encode($queue->getInstance(), JSON_UNESCAPED_SLASHES)
+//					),
+//					'status'   => $qb->createNamedParameter($queue->getStatus()),
+//					'tries'    => $qb->createNamedParameter($queue->getTries()),
+//					'last'     => $qb->createNamedParameter($queue->getLast())
+//				]
+//			);
+		}
+	}
+
+
+	/**
+	 * create a new Queue in the database.
+	 *
+	 * @param RequestQueue $queue
+	 *
+	 * @throws Exception
+	 */
+	public function create(RequestQueue $queue) {
+		$qb = $this->getQueueInsertSql();
+		$qb->setValue('token', $qb->createNamedParameter($queue->getToken()))
+		   ->setValue('author', $qb->createNamedParameter($queue->getAuthor()))
+		   ->setValue('activity', $qb->createNamedParameter($queue->getActivity()))
+		   ->setValue(
+			   'instance', $qb->createNamedParameter(
+			   json_encode($queue->getInstance(), JSON_UNESCAPED_SLASHES)
+		   )
+		   )
+		   ->setValue('priority', $qb->createNamedParameter($queue->getPriority()))
+		   ->setValue('status', $qb->createNamedParameter($queue->getStatus()))
+		   ->setValue('tries', $qb->createNamedParameter($queue->getTries()))
+		   ->setValue('last', $qb->createNamedParameter($queue->getLast()));
+		$qb->execute();
+	}
+
+
+	/**
+	 * return Actor from database based on the username
+	 *
+	 * @param string $token
+	 * @param int $status
+	 *
+	 * @return RequestQueue[]
+	 */
+	public function getFromToken(string $token, int $status = -1): array {
+		$qb = $this->getQueueSelectSql();
+		$this->limitToToken($qb, $token);
+
+		if ($status > -1) {
+			$this->limitToStatus($qb, $status);
+		}
+
+		$this->orderByPriority($qb);
+
+		$requests = [];
+		$cursor = $qb->execute();
+		while ($data = $cursor->fetch()) {
+			$requests[] = $this->parseQueueSelectSql($data);
+		}
+		$cursor->closeCursor();
+
+		return $requests;
+	}
+
+
+	/**
+	 * @param RequestQueue $queue
+	 *
+	 * @throws QueueStatusException
+	 */
+	public function setAsRunning(RequestQueue &$queue) {
+		$qb = $this->getQueueUpdateSql();
+		$qb->set('status', $qb->createNamedParameter(RequestQueue::STATUS_RUNNING))
+		   ->set(
+			   'last',
+			   $qb->createNamedParameter(new DateTime('now'), IQueryBuilder::PARAM_DATE)
+		   );
+		$this->limitToId($qb, $queue->getId());
+		$this->limitToStatus($qb, RequestQueue::STATUS_STANDBY);
+
+		$count = $qb->execute();
+
+		if ($count === 0) {
+			throw new QueueStatusException();
+		}
+
+		$queue->setStatus(RequestQueue::STATUS_RUNNING);
+	}
+
+
+	/**
+	 * @param RequestQueue $queue
+	 *
+	 * @throws QueueStatusException
+	 */
+	public function setAsSuccess(RequestQueue &$queue) {
+		$qb = $this->getQueueUpdateSql();
+		$qb->set('status', $qb->createNamedParameter(RequestQueue::STATUS_SUCCESS));
+		$this->limitToId($qb, $queue->getId());
+		$this->limitToStatus($qb, RequestQueue::STATUS_RUNNING);
+
+		$count = $qb->execute();
+
+		if ($count === 0) {
+			throw new QueueStatusException();
+		}
+
+		$queue->setStatus(RequestQueue::STATUS_SUCCESS);
+	}
+
+
+	/**
+	 * @param RequestQueue $queue >ll
+	 *
+	 * @throws QueueStatusException
+	 */
+	public function setAsFailure(RequestQueue &$queue) {
+		$qb = $this->getQueueUpdateSql();
+		$qb->set('status', $qb->createNamedParameter(RequestQueue::STATUS_STANDBY));
+		// TODO - increment tries++
+//		   ->set('tries', 'tries+1');
+		$this->limitToId($qb, $queue->getId());
+		$this->limitToStatus($qb, RequestQueue::STATUS_RUNNING);
+
+		$count = $qb->execute();
+
+		if ($count === 0) {
+			throw new QueueStatusException();
+		}
+
+		$queue->setStatus(RequestQueue::STATUS_SUCCESS);
+	}
+
+}
+

lib/Db/RequestQueueRequestBuilder.php

@@ -0,0 +1,116 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Social\Db;
+
+
+use daita\MySmallPhpTools\Traits\TArrayTools;
+use OCA\Social\Model\RequestQueue;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+
+class RequestQueueRequestBuilder extends CoreRequestBuilder {
+
+
+	use TArrayTools;
+
+
+	/**
+	 * Base of the Sql Insert request
+	 *
+	 * @return IQueryBuilder
+	 */
+	protected function getQueueInsertSql(): IQueryBuilder {
+		$qb = $this->dbConnection->getQueryBuilder();
+		$qb->insert(self::TABLE_REQUEST_QUEUE);
+
+		return $qb;
+	}
+
+
+	/**
+	 * Base of the Sql Update request
+	 *
+	 * @return IQueryBuilder
+	 */
+	protected function getQueueUpdateSql(): IQueryBuilder {
+		$qb = $this->dbConnection->getQueryBuilder();
+		$qb->update(self::TABLE_REQUEST_QUEUE);
+
+		return $qb;
+	}
+
+
+	/**
+	 * Base of the Sql Select request for Shares
+	 *
+	 * @return IQueryBuilder
+	 */
+	protected function getQueueSelectSql(): IQueryBuilder {
+		$qb = $this->dbConnection->getQueryBuilder();
+
+		/** @noinspection PhpMethodParametersCountMismatchInspection */
+		$qb->select(
+			'rq.id', 'rq.token', 'rq.author', 'rq.activity', 'rq.instance', 'rq.priority',
+			'rq.status', 'rq.tries', 'rq.last'
+		)
+		   ->from(self::TABLE_REQUEST_QUEUE, 'rq');
+
+		$this->defaultSelectAlias = 'rq';
+
+		return $qb;
+	}
+
+
+	/**
+	 * Base of the Sql Delete request
+	 *
+	 * @return IQueryBuilder
+	 */
+	protected function getQueueDeleteSql(): IQueryBuilder {
+		$qb = $this->dbConnection->getQueryBuilder();
+		$qb->delete(self::TABLE_REQUEST_QUEUE);
+
+		return $qb;
+	}
+
+
+	/**
+	 * @param array $data
+	 *
+	 * @return RequestQueue
+	 */
+	protected function parseQueueSelectSql($data): RequestQueue {
+		$queue = new RequestQueue();
+		$queue->importFromDatabase($data);
+
+		return $queue;
+	}
+
+}
+

lib/Exceptions/EmptyQueueException.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace OCA\Social\Exceptions;
+
+class EmptyQueueException extends \Exception {
+
+}
+

lib/Exceptions/NoHighPriorityRequestException.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace OCA\Social\Exceptions;
+
+class NoHighPriorityRequestException extends \Exception {
+
+}
+

lib/Exceptions/QueueStatusException.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace OCA\Social\Exceptions;
+
+class QueueStatusException extends \Exception {
+
+}
+

lib/Model/ActivityPub/ACore.php

@@ -36,7 +36,7 @@ use JsonSerializable;
 use OCA\Social\Exceptions\ActivityCantBeVerifiedException;
 use OCA\Social\Exceptions\UrlCloudException;
 use OCA\Social\Model\InstancePath;
-use OCA\Social\Service\ICoreService;
+use OCA\Social\Service\ActivityPub\ICoreService;
 
 
 abstract class ACore implements JsonSerializable {

lib/Model/InstancePath.php

@@ -44,11 +44,17 @@ class InstancePath implements JsonSerializable {
 
 	use TArrayTools;
 
+
 	const TYPE_PUBLIC = 0;
 	const TYPE_INBOX = 1;
 	const TYPE_GLOBAL = 2;
 	const TYPE_FOLLOWERS = 3;
 
+	const PRIORITY_NONE = 0;
+	const PRIORITY_LOW = 1;
+	const PRIORITY_MEDIUM = 2;
+	const PRIORITY_HIGH = 3;
+	const PRIORITY_TOP = 4;
 
 	/** @var string */
 	private $uri = '';
@@ -56,19 +62,35 @@ class InstancePath implements JsonSerializable {
 	/** @var int */
 	private $type = 0;
 
+	/** @var int */
+	private $priority = 0;
+
 
 	/**
 	 * InstancePath constructor.
 	 *
 	 * @param string $uri
 	 * @param int $type
+	 * @param int $priority
 	 */
-	public function __construct(string $uri = '', int $type = 0) {
+	public function __construct(string $uri = '', int $type = 0, int $priority = 0) {
 		$this->uri = $uri;
 		$this->type = $type;
+		$this->priority = $priority;
 	}
 
 
+	/**
+	 * @param string $uri
+	 *
+	 * @return InstancePath
+	 */
+	public function setUri(string $uri): InstancePath {
+		$this->uri = $uri;
+
+		return $this;
+	}
+
 	/**
 	 * @return string
 	 */
@@ -77,6 +99,17 @@ class InstancePath implements JsonSerializable {
 	}
 
 
+	/**
+	 * @param int $type
+	 *
+	 * @return InstancePath
+	 */
+	public function setType(int $type): InstancePath {
+		$this->type = $type;
+
+		return $this;
+	}
+
 	/**
 	 * @return int
 	 */
@@ -85,11 +118,30 @@ class InstancePath implements JsonSerializable {
 	}
 
 
+	/**
+	 * @return int
+	 */
+	public function getPriority(): int {
+		return $this->priority;
+	}
+
+	/**
+	 * @param int $priority
+	 *
+	 * @return InstancePath
+	 */
+	public function setPriority(int $priority): InstancePath {
+		$this->priority = $priority;
+
+		return $this;
+	}
+
+
 	/**
 	 * @return string
 	 */
 	public function getAddress(): string {
-		$info = parse_url($this->uri);
+		$info = parse_url($this->getUri());
 
 		return $this->get('host', $info, '');
 	}
@@ -99,15 +151,19 @@ class InstancePath implements JsonSerializable {
 	 * @return string
 	 */
 	public function getPath(): string {
-		$info = parse_url($this->uri);
+		$info = parse_url($this->getUri());
 
 		return $this->get('path', $info, '');
 	}
 
 
+	/**
+	 * @param array $data
+	 */
 	public function import(array $data) {
-
-
+		$this->setUri($this->get('uri', $data, ''));
+		$this->setType($this->getInt('type', $data, 0));
+		$this->setPriority($this->getInt('priority', $data, 0));
 	}
 
 
@@ -116,8 +172,9 @@ class InstancePath implements JsonSerializable {
 	 */
 	public function jsonSerialize(): array {
 		return [
-			'uri'  => $this->getUri(),
-			'type' => $this->getType()
+			'uri'      => $this->getUri(),
+			'type'     => $this->getType(),
+			'priority' => $this->getPriority()
 		];
 	}
 

lib/Model/RequestQueue.php

@@ -0,0 +1,323 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Model;
+
+
+use daita\MySmallPhpTools\Traits\TArrayTools;
+use JsonSerializable;
+
+
+/**
+ * Class RequestQueue
+ *
+ * @package OCA\Social\Model
+ */
+class RequestQueue implements JsonSerializable {
+
+
+	use TArrayTools;
+
+
+	const STATUS_STANDBY = 0;
+	const STATUS_RUNNING = 1;
+	const STATUS_SUCCESS = 9;
+
+
+	/** @var integer */
+	private $id = 0;
+
+	/** @var string */
+	private $token = '';
+
+	/** @var string */
+	private $author = '';
+
+	/** @var string */
+	private $activity = '';
+
+	/** @var InstancePath */
+	private $instance;
+
+	/** @var int */
+	private $priority = 0;
+
+	/** @var int */
+	private $status = 0;
+
+	/** @var int */
+	private $tries = 0;
+
+	/** @var int */
+	private $last = 0;
+
+
+	/**
+	 * RequestQueue constructor.
+	 *
+	 * @param string $activity
+	 * @param InstancePath $instance
+	 * @param string $author
+	 */
+	public function __construct(string $activity = '', $instance = null, string $author = '') {
+		$this->setActivity($activity);
+		if ($instance instanceof InstancePath) {
+			$this->setInstance($instance);
+		}
+
+		$this->setAuthor($author);
+		$this->resetToken();
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getId(): int {
+		return $this->id;
+	}
+
+	/**
+	 * @param int $id
+	 *
+	 * @return RequestQueue
+	 */
+	public function setId(int $id): RequestQueue {
+		$this->id = $id;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function getToken(): string {
+		return $this->token;
+	}
+
+	/**
+	 * @param string $token
+	 *
+	 * @return RequestQueue
+	 */
+	public function setToken(string $token): RequestQueue {
+		$this->token = $token;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function getAuthor(): string {
+		return $this->author;
+	}
+
+	/**
+	 * @param string $author
+	 *
+	 * @return RequestQueue
+	 */
+	public function setAuthor(string $author): RequestQueue {
+		$this->author = $author;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return RequestQueue
+	 */
+	public function resetToken(): RequestQueue {
+		$uuid = sprintf(
+			'%04x%04x-%04x-%04x-%04x-%04x%04x%04x', mt_rand(0, 0xffff), mt_rand(0, 0xffff),
+			mt_rand(0, 0xffff), mt_rand(0, 0xfff) | 0x4000, mt_rand(0, 0x3fff) | 0x8000,
+			mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
+		);
+
+		$this->setToken($uuid);
+
+		return $this;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getActivity(): string {
+		return $this->activity;
+	}
+
+	/**
+	 * @param string $activity
+	 *
+	 * @return RequestQueue
+	 */
+	public function setActivity(string $activity): RequestQueue {
+		$this->activity = $activity;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return InstancePath
+	 */
+	public function getInstance(): InstancePath {
+		return $this->instance;
+	}
+
+	/**
+	 * @param InstancePath $instance
+	 *
+	 * @return RequestQueue
+	 */
+	public function setInstance(InstancePath $instance): RequestQueue {
+		$this->setPriority($instance->getPriority());
+		$this->instance = $instance;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getPriority(): int {
+		return $this->priority;
+	}
+
+	/**
+	 * @param int $priority
+	 *
+	 * @return RequestQueue
+	 */
+	public function setPriority(int $priority): RequestQueue {
+		$this->priority = $priority;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getStatus(): int {
+		return $this->status;
+	}
+
+	/**
+	 * @param int $status
+	 *
+	 * @return RequestQueue
+	 */
+	public function setStatus(int $status): RequestQueue {
+		$this->status = $status;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getTries(): int {
+		return $this->tries;
+	}
+
+	/**
+	 * @param int $tries
+	 *
+	 * @return RequestQueue
+	 */
+	public function setTries(int $tries): RequestQueue {
+		$this->tries = $tries;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getLast(): int {
+		return $this->last;
+	}
+
+	/**
+	 * @param int $last
+	 *
+	 * @return RequestQueue
+	 */
+	public function setLast(int $last): RequestQueue {
+		$this->last = $last;
+
+		return $this;
+	}
+
+
+	/**
+	 * @param array $data
+	 */
+	public function importFromDatabase(array $data) {
+		$instance = new InstancePath();
+		$instance->import(json_decode($this->get('instance', $data, '{}'), true));
+
+		$this->setId($this->getInt('id', $data, 0));
+		$this->setToken($this->get('token', $data, ''));
+		$this->setAuthor($this->get('author', $data, ''));
+		$this->setInstance($instance);
+		$this->setPriority($this->getInt('priority', $data, 0));
+		$this->setActivity($this->get('activity', $data, ''));
+		$this->setStatus($this->getInt('status', $data, 0));
+		$this->setTries($this->getInt('tries', $data, 0));
+		$this->setLast($this->getInt('last', $data, 0));
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function jsonSerialize(): array {
+		return [
+			'id'       => $this->getId(),
+			'token'    => $this->getToken(),
+			'author'   => $this->getAuthor(),
+			'instance' => $this->getInstance(),
+			'priority' => $this->getPriority(),
+			'status'   => $this->getStatus(),
+			'tries'    => $this->getTries(),
+			'last'     => $this->getLast()
+		];
+	}
+
+}
+

lib/Service/ActivityPub/DeleteService.php

@@ -38,7 +38,6 @@ use OCA\Social\Exceptions\UnknownItemException;
 use OCA\Social\Model\ActivityPub\ACore;
 use OCA\Social\Model\ActivityPub\Activity\Delete;
 use OCA\Social\Service\ActivityService;
-use OCA\Social\Service\ICoreService;
 use OCA\Social\Service\MiscService;
 
 

lib/Service/ActivityPub/FollowService.php

@@ -39,6 +39,7 @@ use OCA\Social\Exceptions\FollowDoesNotExistException;
 use OCA\Social\Exceptions\InvalidResourceException;
 use OCA\Social\Exceptions\RequestException;
 use OCA\Social\Exceptions\SocialAppConfigException;
+use OCA\Social\Exceptions\UrlCloudException;
 use OCA\Social\Model\ActivityPub\ACore;
 use OCA\Social\Model\ActivityPub\Activity\Accept;
 use OCA\Social\Model\ActivityPub\Activity\Reject;
@@ -49,7 +50,6 @@ use OCA\Social\Model\ActivityPub\Person;
 use OCA\Social\Model\InstancePath;
 use OCA\Social\Service\ActivityService;
 use OCA\Social\Service\ConfigService;
-use OCA\Social\Service\ICoreService;
 use OCA\Social\Service\MiscService;
 
 
@@ -103,6 +103,7 @@ class FollowService implements ICoreService {
 	 * @throws SocialAppConfigException
 	 * @throws CacheActorDoesNotExistException
 	 * @throws InvalidResourceException
+	 * @throws UrlCloudException
 	 */
 	public function followAccount(Person $actor, string $account) {
 		$remoteActor = $this->personService->getFromAccount($account);
@@ -118,9 +119,11 @@ class FollowService implements ICoreService {
 			$this->followsRequest->save($follow);
 
 			$follow->addInstancePath(
-				new InstancePath($remoteActor->getInbox(), InstancePath::TYPE_INBOX)
+				new InstancePath(
+					$remoteActor->getInbox(), InstancePath::TYPE_INBOX, InstancePath::PRIORITY_TOP
+				)
 			);
-			$this->activityService->manageRequest($follow);
+			$this->activityService->request($follow);
 		}
 	}
 
@@ -132,6 +135,8 @@ class FollowService implements ICoreService {
 	 * @throws CacheActorDoesNotExistException
 	 * @throws InvalidResourceException
 	 * @throws RequestException
+	 * @throws SocialAppConfigException
+	 * @throws UrlCloudException
 	 */
 	public function unfollowAccount(Person $actor, string $account) {
 		$remoteActor = $this->personService->getFromAccount($account);
@@ -173,12 +178,14 @@ class FollowService implements ICoreService {
 			$accept->setObject($follow);
 
 			$accept->addInstancePath(
-				new InstancePath($remoteActor->getInbox(), InstancePath::TYPE_INBOX)
+				new InstancePath(
+					$remoteActor->getInbox(), InstancePath::TYPE_INBOX, InstancePath::PRIORITY_TOP
+				)
 			);
 
 			$follow->setParent($accept);
 
-			$this->activityService->manageRequest($accept);
+			$this->activityService->request($accept);
 			$this->followsRequest->accepted($follow);
 		} catch (Exception $e) {
 		}

lib/Service/ActivityPub/ICoreService.php

@@ -28,7 +28,7 @@ declare(strict_types=1);
  */
 
 
-namespace OCA\Social\Service;
+namespace OCA\Social\Service\ActivityPub;
 
 
 use OCA\Social\Model\ActivityPub\ACore;

lib/Service/ActivityPub/NoteService.php

@@ -47,7 +47,6 @@ use OCA\Social\Service\ActivityService;
 use OCA\Social\Service\ActorService;
 use OCA\Social\Service\ConfigService;
 use OCA\Social\Service\CurlService;
-use OCA\Social\Service\ICoreService;
 use OCA\Social\Service\MiscService;
 
 class NoteService implements ICoreService {
@@ -150,7 +149,7 @@ class NoteService implements ICoreService {
 			case self::TYPE_UNLISTED:
 				$note->setTo($actor->getFollowers());
 				$note->addInstancePath(
-					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS)
+					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS, InstancePath::PRIORITY_LOW)
 				);
 				$note->addCc(ActivityService::TO_PUBLIC);
 				break;
@@ -158,7 +157,7 @@ class NoteService implements ICoreService {
 			case self::TYPE_FOLLOWERS:
 				$note->setTo($actor->getFollowers());
 				$note->addInstancePath(
-					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS)
+					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS, InstancePath::PRIORITY_LOW)
 				);
 				break;
 
@@ -169,7 +168,7 @@ class NoteService implements ICoreService {
 				$note->setTo(ActivityService::TO_PUBLIC);
 				$note->addCc($actor->getFollowers());
 				$note->addInstancePath(
-					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS)
+					new InstancePath($actor->getFollowers(), InstancePath::TYPE_FOLLOWERS, InstancePath::PRIORITY_LOW)
 				);
 				break;
 		}
@@ -192,7 +191,9 @@ class NoteService implements ICoreService {
 			return;
 		}
 
+		$instancePath = new InstancePath($actor->getInbox(), InstancePath::TYPE_INBOX, InstancePath::PRIORITY_MEDIUM);
 		if ($type === self::TYPE_DIRECT) {
+			$instancePath->setPriority(InstancePath::PRIORITY_HIGH);
 			$note->addToArray($actor->getId());
 		} else {
 			$note->addCc($actor->getId());
@@ -205,7 +206,7 @@ class NoteService implements ICoreService {
 			]
 		);
 
-		$note->addInstancePath(new InstancePath($actor->getInbox(), InstancePath::TYPE_INBOX));
+		$note->addInstancePath($instancePath);
 	}
 
 
@@ -213,8 +214,6 @@ class NoteService implements ICoreService {
 	 * @param Note $note
 	 * @param string $type
 	 * @param array $accounts
-	 *
-	 * @throws RequestException
 	 */
 	public function addRecipients(Note $note, string $type, array $accounts) {
 		if ($accounts === []) {
@@ -237,7 +236,8 @@ class NoteService implements ICoreService {
 		}
 
 		$note->setInReplyTo($replyTo);
-		$note->addInstancePath(new InstancePath($replyTo));
+		// TODO - type can be NOT public !
+		$note->addInstancePath(new InstancePath($replyTo, InstancePath::TYPE_PUBLIC, InstancePath::PRIORITY_HIGH));
 	}
 
 

lib/Service/ActivityPub/PersonService.php

@@ -44,7 +44,6 @@ use OCA\Social\Exceptions\UrlCloudException;
 use OCA\Social\Model\ActivityPub\ACore;
 use OCA\Social\Model\ActivityPub\Person;
 use OCA\Social\Service\ConfigService;
-use OCA\Social\Service\ICoreService;
 use OCA\Social\Service\InstanceService;
 use OCA\Social\Service\MiscService;
 

lib/Service/ActivityPub/UndoService.php

@@ -33,7 +33,6 @@ namespace OCA\Social\Service\ActivityPub;
 
 use Exception;
 use OCA\Social\Model\ActivityPub\ACore;
-use OCA\Social\Service\ICoreService;
 use OCA\Social\Service\MiscService;
 
 

lib/Service/ActivityService.php

@@ -39,16 +39,21 @@ use OCA\Social\Db\ActorsRequest;
 use OCA\Social\Db\FollowsRequest;
 use OCA\Social\Db\NotesRequest;
 use OCA\Social\Exceptions\ActorDoesNotExistException;
+use OCA\Social\Exceptions\EmptyQueueException;
 use OCA\Social\Exceptions\InvalidResourceException;
+use OCA\Social\Exceptions\NoHighPriorityRequestException;
+use OCA\Social\Exceptions\QueueStatusException;
 use OCA\Social\Exceptions\RequestException;
 use OCA\Social\Exceptions\SignatureException;
 use OCA\Social\Exceptions\SocialAppConfigException;
+use OCA\Social\Exceptions\UrlCloudException;
 use OCA\Social\Model\ActivityPub\ACore;
 use OCA\Social\Model\ActivityPub\Activity\Create;
 use OCA\Social\Model\ActivityPub\Activity\Delete;
 use OCA\Social\Model\ActivityPub\Activity\Tombstone;
 use OCA\Social\Model\ActivityPub\Person;
 use OCA\Social\Model\InstancePath;
+use OCA\Social\Model\RequestQueue;
 use OCA\Social\Service\ActivityPub\PersonService;
 use OCP\IRequest;
 
@@ -68,6 +73,7 @@ class ActivityService {
 	const DATE_FORMAT = 'D, d M Y H:i:s T';
 	const DATE_DELAY = 30;
 
+
 	/** @var ActorsRequest */
 	private $actorsRequest;
 
@@ -77,6 +83,9 @@ class ActivityService {
 	/** @var FollowsRequest */
 	private $followsRequest;
 
+	/** @var QueueService */
+	private $queueService;
+
 	/** @var ActorService */
 	private $actorService;
 
@@ -99,6 +108,7 @@ class ActivityService {
 	/**
 	 * ActivityService constructor.
 	 *
+	 * @param QueueService $queueService
 	 * @param ActorsRequest $actorsRequest
 	 * @param NotesRequest $notesRequest
 	 * @param FollowsRequest $followsRequest
@@ -111,15 +121,15 @@ class ActivityService {
 	 */
 	public function __construct(
 		ActorsRequest $actorsRequest, NotesRequest $notesRequest, FollowsRequest $followsRequest,
-		CurlService $curlService, ActorService $actorService,
+		QueueService $queueService, CurlService $curlService, ActorService $actorService,
 		PersonService $personService, InstanceService $instanceService,
-		ConfigService $configService,
-		MiscService $miscService
+		ConfigService $configService, MiscService $miscService
 	) {
-		$this->curlService = $curlService;
 		$this->actorsRequest = $actorsRequest;
 		$this->notesRequest = $notesRequest;
 		$this->followsRequest = $followsRequest;
+		$this->queueService = $queueService;
+		$this->curlService = $curlService;
 		$this->actorService = $actorService;
 		$this->personService = $personService;
 		$this->instanceService = $instanceService;
@@ -133,13 +143,11 @@ class ActivityService {
 	 * @param ACore $item
 	 * @param ACore $activity
 	 *
-	 * @return array
-	 * @throws RequestException
-	 * @throws SocialAppConfigException
-	 * @throws ActorDoesNotExistException
+	 * @return string
+	 * @throws Exception
 	 */
 	public function createActivity(Person $actor, ACore $item, ACore &$activity = null
-	): array {
+	): string {
 
 		$activity = new Create();
 		$item->setParent($activity);
@@ -158,20 +166,17 @@ class ActivityService {
 
 		$activity->setActor($actor);
 
-		$result = $this->request($activity);
-
-		return $result;
+		return $this->request($activity);
 	}
 
 
 	/**
 	 * @param ACore $item
 	 *
-	 * @throws ActorDoesNotExistException
-	 * @throws RequestException
-	 * @throws SocialAppConfigException
+	 * @return string
+	 * @throws Exception
 	 */
-	public function deleteActivity(ACore $item) {
+	public function deleteActivity(ACore $item): string {
 		$delete = new Delete();
 		$delete->setId($item->getId() . '#delete');
 		$delete->setActorId($item->getActorId());
@@ -182,7 +187,7 @@ class ActivityService {
 		$delete->setObject($tombstone);
 		$delete->addInstancePaths($item->getInstancePaths());
 
-		$this->request($delete);
+		return $this->request($delete);
 	}
 
 
@@ -217,61 +222,91 @@ class ActivityService {
 	/**
 	 * @param ACore $activity
 	 *
+	 * @return string
+	 * @throws Exception
+	 */
+	public function request(ACore $activity): string {
+		$this->setupCore($activity);
+
+		$author = $this->getAuthorFromItem($activity);
+		$instancePaths = $this->generateInstancePaths($activity);
+		$token = $this->queueService->generateRequestQueue($instancePaths, $activity, $author);
+
+		try {
+			$directRequest = $this->queueService->getPriorityRequest($token);
+			$this->manageRequest($directRequest);
+		} catch (NoHighPriorityRequestException $e) {
+		} catch (EmptyQueueException $e) {
+			return '';
+		}
+
+		$this->curlService->asyncWithToken($token);
+
+		return $token;
+	}
+
+
+	/**
+	 * @param RequestQueue $queue
+	 *
+	 * @throws ActorDoesNotExistException
 	 * @throws RequestException
 	 * @throws SocialAppConfigException
-	 * @throws ActorDoesNotExistException
 	 */
-	public function manageRequest(ACore $activity) {
-		$result = $this->request($activity);
-		$this->miscService->log('Activity: ' . json_encode($activity));
-		$this->miscService->log('Result: ' . json_encode($result));
+	public function manageRequest(RequestQueue $queue) {
+
+		try {
+			$this->queueService->initRequest($queue);
+		} catch (QueueStatusException $e) {
+			return;
+		}
+
+		$result = $this->generateRequest(
+			$queue->getInstance(), $queue->getActivity(), $queue->getAuthor()
+		);
+
+		try {
+			if ($this->getint('_code', $result, 500) === 202) {
+				$this->queueService->endRequest($queue, true);
+			} else {
+				$this->queueService->endRequest($queue, false);
+			}
+		} catch (QueueStatusException $e) {
+		}
 	}
 
 
 	/**
 	 * @param ACore $activity
 	 *
-	 *
-	 * @return array
-	 * @throws RequestException
-	 * @throws SocialAppConfigException
-	 * @throws ActorDoesNotExistException
+	 * @return InstancePath[]
 	 */
-	public function request(ACore &$activity) {
-		$this->setupCore($activity);
-//		$hosts = $this->instanceService->getInstancesFromActivity($activity);
-
-		$result = [];
-//		foreach ($hosts as $host) {
-//			foreach ($host->getInstancePaths() as $path) {
+	private function generateInstancePaths(ACore $activity): array {
+		$instancePaths = [];
 		foreach ($activity->getInstancePaths() as $instancePath) {
 			if ($instancePath->getType() === InstancePath::TYPE_FOLLOWERS) {
-				$result = array_merge($result, $this->requestToFollowers($activity, $instancePath));
+				$instancePaths = array_merge(
+					$instancePaths, $this->generateInstancePathsFollowers($instancePath)
+				);
 			} else {
-				$result[] = $this->generateRequest($instancePath, $activity);
+				$instancePaths[] = $instancePath;
 			}
 		}
 
-//		}
-
-		return $result;
+		return $instancePaths;
 	}
 
 
 	/**
-	 * @param ACore $activity
 	 * @param InstancePath $instancePath
 	 *
-	 * @return array
-	 * @throws ActorDoesNotExistException
-	 * @throws RequestException
-	 * @throws SocialAppConfigException
+	 * @return InstancePath[]
 	 */
-	private function requestToFollowers(ACore &$activity, InstancePath $instancePath): array {
-		$result = [];
+	private function generateInstancePathsFollowers(InstancePath $instancePath): array {
+		$follows = $this->followsRequest->getByFollowId($instancePath->getUri());
 
 		$sharedInboxes = [];
-		$follows = $this->followsRequest->getByFollowId($instancePath->getUri());
+		$instancePaths = [];
 		foreach ($follows as $follow) {
 			if (!$follow->gotActor()) {
 				// TODO - check if cache can be empty at this point ?
@@ -285,28 +320,32 @@ class ActivityService {
 			}
 
 			$sharedInboxes[] = $sharedInbox;
-			$result[] = $this->generateRequest(
-				new InstancePath($sharedInbox, InstancePath::TYPE_GLOBAL), $activity
+			$instancePaths[] = new InstancePath(
+				$sharedInbox, InstancePath::TYPE_GLOBAL, $instancePath->getPriority()
 			);
+//			$result[] = $this->generateRequest(
+//				new InstancePath($sharedInbox, InstancePath::TYPE_GLOBAL), $activity
+//			);
 		}
 
-		return $result;
+		return $instancePaths;
 	}
 
 
 	/**
 	 * @param InstancePath $path
-	 * @param ACore $activity
+	 * @param string $activity
+	 * @param string $author
 	 *
 	 * @return Request[]
 	 * @throws ActorDoesNotExistException
 	 * @throws RequestException
 	 * @throws SocialAppConfigException
 	 */
-	public function generateRequest(InstancePath $path, ACore $activity): array {
-		$document = json_encode($activity);
+	public function generateRequest(InstancePath $path, string $activity, string $author): array {
+//		$document = json_encode($activity);
 		$date = gmdate(self::DATE_FORMAT);
-		$localActor = $this->getActorFromItem($activity);
+		$localActor = $this->getActorFromAuthor($author);
 
 		$localActorLink =
 			$this->configService->getUrlSocial() . '@' . $localActor->getPreferredUsername();
@@ -332,7 +371,7 @@ class ActivityService {
 		$request->addHeader('Date: ' . $date);
 		$request->addHeader('Signature: ' . $header);
 
-		$request->setDataJson($document);
+		$request->setDataJson($activity);
 		$request->setAddress($path->getAddress());
 
 		return $this->curlService->request($request);
@@ -362,18 +401,27 @@ class ActivityService {
 	/**
 	 * @param ACore $activity
 	 *
-	 * @return Person
-	 * @throws SocialAppConfigException
-	 * @throws ActorDoesNotExistException
+	 * @return string
 	 */
-	private function getActorFromItem(Acore $activity): Person {
+	private function getAuthorFromItem(Acore $activity): string {
 		if ($activity->gotActor()) {
-			return $activity->getActor();
+			return $activity->getActor()
+							->getId();
 		}
 
-		$actorId = $activity->getActorId();
+		return $activity->getActorId();
+	}
 
-		return $this->actorService->getActorById($actorId);
+
+	/**
+	 * @param string $author
+	 *
+	 * @return Person
+	 * @throws ActorDoesNotExistException
+	 * @throws SocialAppConfigException
+	 */
+	private function getActorFromAuthor(string $author): Person {
+		return $this->actorService->getActorById($author);
 	}
 
 
@@ -456,8 +504,10 @@ class ActivityService {
 	 * @param $keyId
 	 *
 	 * @return string
-	 * @throws RequestException
 	 * @throws InvalidResourceException
+	 * @throws RequestException
+	 * @throws SocialAppConfigException
+	 * @throws UrlCloudException
 	 */
 	private function retrieveKey($keyId): string {
 		$actor = $this->personService->getFromId($keyId);
@@ -467,6 +517,8 @@ class ActivityService {
 
 
 	/**
+	 * @deprecated !??? - do we need this !?
+	 *
 	 * @param ACore $activity
 	 */
 	private function setupCore(ACore $activity) {

lib/Service/ConfigService.php

@@ -52,11 +52,18 @@ class ConfigService {
 
 
 	const SOCIAL_ADDRESS = 'address';
+	const SOCIAL_SERVICE = 'service';
 	const SOCIAL_MAX_SIZE = 'max_size';
 
+	const BACKGROUND_CRON = 1;
+	const BACKGROUND_ASYNC = 2;
+	const BACKGROUND_SERVICE = 3;
+	const BACKGROUND_FULL_SERVICE = 4;
+
 	/** @var array */
 	public $defaults = [
 		self::SOCIAL_ADDRESS  => '',
+		self::SOCIAL_SERVICE  => 1,
 		self::SOCIAL_MAX_SIZE => 25
 	];
 

lib/Service/CurlService.php

@@ -31,11 +31,24 @@ namespace OCA\Social\Service;
 
 
 use daita\MySmallPhpTools\Model\Request;
+use daita\MySmallPhpTools\Traits\TArrayTools;
+use daita\MySmallPhpTools\Traits\TPathTools;
 use OCA\Social\Exceptions\RequestException;
+use OCA\Social\Exceptions\SocialAppConfigException;
 
 class CurlService {
 
 
+	use TArrayTools;
+	use TPathTools;
+
+
+	const ASYNC_TOKEN = '/async/token/{token}';
+
+
+	/** @var ConfigService */
+	private $configService;
+
 	/** @var MiscService */
 	private $miscService;
 
@@ -43,9 +56,11 @@ class CurlService {
 	/**
 	 * CurlService constructor.
 	 *
+	 * @param ConfigService $configService
 	 * @param MiscService $miscService
 	 */
-	public function __construct(MiscService $miscService) {
+	public function __construct(ConfigService $configService, MiscService $miscService) {
+		$this->configService = $configService;
 		$this->miscService = $miscService;
 	}
 
@@ -89,6 +104,29 @@ class CurlService {
 	}
 
 
+	/**
+	 * @param string $token
+	 *
+	 * @throws SocialAppConfigException
+	 */
+	public function asyncWithToken(string $token) {
+		$address = $this->configService->getUrlSocial();
+		$parse = parse_url($address);
+		$host = $this->get('host', $parse, '');
+		$path = $this->withEndSlash($this->get('path', $parse, '')) . $this->withoutBeginSlash(
+				self::ASYNC_TOKEN
+			);
+		$path = str_replace('{token}', $token, $path);
+
+		$request = new Request($path, Request::TYPE_POST);
+		$request->setAddress($host);
+		try {
+			$this->request($request);
+		} catch (RequestException $e) {
+		}
+	}
+
+
 	/**
 	 * @param Request $request
 	 *

lib/Service/ImportService.php

@@ -71,6 +71,7 @@ class ImportService {
 	/** @var DeleteService */
 	private $deleteService;
 
+	/** @var ConfigService */
 	private $configService;
 
 	/** @var MiscService */

lib/Service/PostService.php

@@ -30,6 +30,7 @@ declare(strict_types=1);
 namespace OCA\Social\Service;
 
 
+use Exception;
 use OC\User\NoUserException;
 use OCA\Social\Exceptions\ActorDoesNotExistException;
 use OCA\Social\Exceptions\RequestException;
@@ -77,20 +78,20 @@ class PostService {
 	 * @param Post $post
 	 * @param ACore $activity
 	 *
-	 * @return array
+	 * @return string
 	 * @throws ActorDoesNotExistException
 	 * @throws NoUserException
-	 * @throws RequestException
 	 * @throws SocialAppConfigException
+	 * @throws Exception
 	 */
-	public function createPost(Post $post, ACore &$activity = null) {
+	public function createPost(Post $post, ACore &$activity = null): string {
 		$note =
 			$this->noteService->generateNote(
 				$post->getUserId(), $post->getContent(), $post->getType()
 			);
 
-		$this->noteService->addRecipients($note, $post->getType(), $post->getTo());
 		$this->noteService->replyTo($note, $post->getReplyTo());
+		$this->noteService->addRecipients($note, $post->getType(), $post->getTo());
 
 		$actor = $this->actorService->getActorFromUserId($post->getUserId());
 

lib/Service/QueueService.php

@@ -0,0 +1,191 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Service;
+
+
+use daita\MySmallPhpTools\Traits\TArrayTools;
+use Exception;
+use OCA\Social\Db\RequestQueueRequest;
+use OCA\Social\Exceptions\EmptyQueueException;
+use OCA\Social\Exceptions\NoHighPriorityRequestException;
+use OCA\Social\Exceptions\QueueStatusException;
+use OCA\Social\Model\ActivityPub\ACore;
+use OCA\Social\Model\InstancePath;
+use OCA\Social\Model\RequestQueue;
+
+
+class QueueService {
+
+
+	use TArrayTools;
+
+
+	/** @var RequestQueueRequest */
+	private $requestQueueRequest;
+
+	/** @var ConfigService */
+	private $configService;
+
+	/** @var MiscService */
+	private $miscService;
+
+
+	/**
+	 * QueueService constructor.
+	 *
+	 * @param RequestQueueRequest $requestQueueRequest
+	 * @param ConfigService $configService
+	 * @param MiscService $miscService
+	 */
+	public function __construct(
+		RequestQueueRequest $requestQueueRequest, ConfigService $configService,
+		MiscService $miscService
+	) {
+		$this->requestQueueRequest = $requestQueueRequest;
+		$this->configService = $configService;
+		$this->miscService = $miscService;
+	}
+
+
+	/**
+	 * @param array $instancePaths
+	 * @param ACore $item
+	 *
+	 * @return string
+	 * @throws Exception
+	 */
+	public function generateRequestQueue(array $instancePaths, ACore $item, string $author
+	): string {
+		$activity = json_encode($item, JSON_UNESCAPED_SLASHES);
+
+		$token = '';
+		$requests = [];
+		foreach ($instancePaths as $instancePath) {
+			$request = new RequestQueue($activity, $instancePath, $author);
+			if ($token === '') {
+				$token = $request->getToken();
+			} else {
+				$request->setToken($token);
+			}
+
+			$requests[] = $request;
+		}
+
+		$this->requestQueueRequest->multiple($requests);
+
+		return $token;
+	}
+
+
+	/**
+	 * @param string $token
+	 *
+	 * @return RequestQueue
+	 * @throws EmptyQueueException
+	 * @throws NoHighPriorityRequestException
+	 */
+	public function getPriorityRequest(string $token): RequestQueue {
+		$requests = $this->requestQueueRequest->getFromToken($token);
+
+		if (sizeof($requests) === 0) {
+			throw new EmptyQueueException();
+		}
+
+		$request = $requests[0];
+		switch ($request->getPriority()) {
+
+			case InstancePath::PRIORITY_TOP:
+				return $request;
+
+			case InstancePath::PRIORITY_HIGH:
+				if (sizeof($requests) === 1) {
+					return $request;
+				}
+
+				$next = $requests[1];
+				if ($next->getStatus() < InstancePath::PRIORITY_HIGH) {
+					return $request;
+				}
+				break;
+
+			case InstancePath::PRIORITY_MEDIUM:
+				if (sizeof($requests) === 1) {
+					return $request;
+				}
+				break;
+		}
+
+		throw new NoHighPriorityRequestException();
+	}
+
+
+	/**
+	 * @param string $token
+	 * @param int $status
+	 *
+	 * @return array
+	 */
+	public function getRequestFromToken(string $token, int $status = -1): array {
+		if ($token === '') {
+			return [];
+		}
+
+		return $this->requestQueueRequest->getFromToken($token, $status);
+	}
+
+
+	/**
+	 * @param RequestQueue $queue
+	 *
+	 * @throws QueueStatusException
+	 */
+	public function initRequest(RequestQueue $queue) {
+		$this->requestQueueRequest->setAsRunning($queue);
+	}
+
+
+	/**
+	 * @param RequestQueue $queue
+	 * @param bool $success
+	 *
+	 * @throws QueueStatusException
+	 */
+	public function endRequest(RequestQueue $queue, bool $success) {
+		if ($success === true) {
+			$this->requestQueueRequest->setAsSuccess($queue);
+		} else {
+			$this->requestQueueRequest->setAsFailure($queue);
+		}
+	}
+
+
+}
+