SwiftFactory::__construct() - Code Metrics - Inspection of "Merge pull request #18883 from adrb/optimize_swift..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 447277...a1c1b3 )

by Roeland

created 2020-04-30 07:06 UTC

SwiftFactory::__construct() A

↳ Parent: SwiftFactory

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	3
nc	1
nop	3
dl	0
loc	4
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

/**
 * @copyright Copyright (c) 2018 Robin Appelman <[email protected]>
 *
 * @author Christoph Wurst <[email protected]>
 * @author Julien Lutran <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Roeland Jago Douma <[email protected]>
 * @author Volker <[email protected]>
 * @author William Pain <[email protected]>
 *
 * @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 OC\Files\ObjectStore;

use GuzzleHttp\Client;
use GuzzleHttp\Exception\ClientException;
use GuzzleHttp\Exception\ConnectException;
use GuzzleHttp\Exception\RequestException;
use GuzzleHttp\HandlerStack;
use OCP\Files\StorageAuthException;
use OCP\Files\StorageNotAvailableException;
use OCP\ICache;
use OCP\ILogger;
use OpenStack\Common\Auth\Token;
use OpenStack\Common\Error\BadResponseError;
use OpenStack\Common\Transport\Utils as TransportUtils;
use OpenStack\Identity\v2\Models\Catalog;
use OpenStack\Identity\v2\Service as IdentityV2Service;
use OpenStack\Identity\v3\Service as IdentityV3Service;
use OpenStack\ObjectStore\v1\Models\Container;
use OpenStack\OpenStack;
use Psr\Http\Message\RequestInterface;

class SwiftFactory {
	private $cache;
	private $params;
	/** @var Container|null */
	private $container = null;
	private $logger;

	public const DEFAULT_OPTIONS = [
		'autocreate' => false,
		'urlType' => 'publicURL',
		'catalogName' => 'swift',
		'catalogType' => 'object-store'
	];

	public function __construct(ICache $cache, array $params, ILogger $logger) {
		$this->cache = $cache;
		$this->params = $params;
		$this->logger = $logger;
	}

	/**
	 * Gets currently cached token id
	 *
	 * @return string
	 * @throws StorageAuthException
	 */
	public function getCachedTokenId() {
		if ( !isset($this->params['cachedToken']) ) {
			throw new StorageAuthException('Unauthenticated ObjectStore connection');
		}

		// Is it V2 token?
		if ( isset($this->params['cachedToken']['token']) ) {
			return $this->params['cachedToken']['token']['id'];
		}

		return $this->params['cachedToken']['id'];
	}

	private function getCachedToken(string $cacheKey) {
		$cachedTokenString = $this->cache->get($cacheKey . '/token');
		if ($cachedTokenString) {
			return json_decode($cachedTokenString, true);
		} else {
			return null;
		}
	}

	private function cacheToken(Token $token, string $serviceUrl, string $cacheKey) {
		if ($token instanceof \OpenStack\Identity\v3\Models\Token) {
			// for v3 the catalog is cached as part of the token, so no need to cache $serviceUrl separately
			$value = $token->export();
		} else {
			/** @var \OpenStack\Identity\v2\Models\Token $token */
			$value = [
				'serviceUrl' => $serviceUrl,
				'token' => [
					'issued_at' => $token->issuedAt->format('c'),
					'expires' => $token->expires->format('c'),
					'id' => $token->id,
					'tenant' => $token->tenant
				]
			];
		}

		$this->params['cachedToken'] = $value;
		$this->cache->set($cacheKey . '/token', json_encode($value));
	}

	/**
	 * @return OpenStack
	 * @throws StorageAuthException
	 */
	private function getClient() {
		if (isset($this->params['bucket'])) {
			$this->params['container'] = $this->params['bucket'];
		}
		if (!isset($this->params['container'])) {
			$this->params['container'] = 'nextcloud';
		}
		if (isset($this->params['user']) && is_array($this->params['user'])) {
			$userName = $this->params['user']['name'];
		} else {
			if (!isset($this->params['username']) && isset($this->params['user'])) {
				$this->params['username'] = $this->params['user'];
			}
			$userName = $this->params['username'];
		}
		if (!isset($this->params['tenantName']) && isset($this->params['tenant'])) {
			$this->params['tenantName'] = $this->params['tenant'];
		}
		if (isset($this->params['domain'])) {
			$this->params['scope']['project']['name'] = $this->params['tenant'];
			$this->params['scope']['project']['domain']['name'] = $this->params['domain'];
		}
		$this->params = array_merge(self::DEFAULT_OPTIONS, $this->params);

		$cacheKey = $userName . '@' . $this->params['url'] . '/' . $this->params['container'];
		$token = $this->getCachedToken($cacheKey);
		$this->params['cachedToken'] = $token;

		$httpClient = new Client([
			'base_uri' => TransportUtils::normalizeUrl($this->params['url']),
			'handler' => HandlerStack::create()
		]);

		if (isset($this->params['user']) && is_array($this->params['user']) && isset($this->params['user']['name'])) {
			if (!isset($this->params['scope'])) {
				throw new StorageAuthException('Scope has to be defined for V3 requests');
			}

			return $this->auth(IdentityV3Service::factory($httpClient), $cacheKey);
		} else {
			return $this->auth(SwiftV2CachingAuthService::factory($httpClient), $cacheKey);
		}
	}

	/**
	 * @param IdentityV2Service|IdentityV3Service $authService
	 * @param string $cacheKey
	 * @return OpenStack
	 * @throws StorageAuthException
	 */
	private function auth($authService, string $cacheKey) {
		$this->params['identityService'] = $authService;
		$this->params['authUrl'] = $this->params['url'];

		$cachedToken = $this->params['cachedToken'];
		$hasValidCachedToken = false;
		if (\is_array($cachedToken)) {
			if ($authService instanceof IdentityV3Service) {
				$token = $authService->generateTokenFromCache($cachedToken);
				if (\is_null($token->catalog)) {
					$this->logger->warning('Invalid cached token for swift, no catalog set: ' . json_encode($cachedToken));
				} elseif ($token->hasExpired()) {
					$this->logger->debug('Cached token for swift expired');
				} else {
					$hasValidCachedToken = true;
				}
			} else {
				try {
					/** @var \OpenStack\Identity\v2\Models\Token $token */
					$token = $authService->model(\OpenStack\Identity\v2\Models\Token::class, $cachedToken['token']);
					$now = new \DateTimeImmutable("now");
					if ($token->expires > $now) {
						$hasValidCachedToken = true;
						$this->params['v2cachedToken'] = $token;
						$this->params['v2serviceUrl'] = $cachedToken['serviceUrl'];
					} else {
						$this->logger->debug('Cached token for swift expired');
					}
				} catch (\Exception $e) {
					$this->logger->logException($e);
				}
			}
		}

		if (!$hasValidCachedToken) {
			unset($this->params['cachedToken']);
			try {
				list($token, $serviceUrl) = $authService->authenticate($this->params);
				$this->cacheToken($token, $serviceUrl, $cacheKey);
			} catch (ConnectException $e) {
				throw new StorageAuthException('Failed to connect to keystone, verify the keystone url', $e);
			} catch (ClientException $e) {
				$statusCode = $e->getResponse()->getStatusCode();
				if ($statusCode === 404) {
					throw new StorageAuthException('Keystone not found, verify the keystone url', $e);
				} elseif ($statusCode === 412) {
					throw new StorageAuthException('Precondition failed, verify the keystone url', $e);
				} elseif ($statusCode === 401) {
					throw new StorageAuthException('Authentication failed, verify the username, password and possibly tenant', $e);
				} else {
					throw new StorageAuthException('Unknown error', $e);
				}
			} catch (RequestException $e) {
				throw new StorageAuthException('Connection reset while connecting to keystone, verify the keystone url', $e);
			}
		}


		$client = new OpenStack($this->params);

		return $client;
	}

	/**
	 * @return \OpenStack\ObjectStore\v1\Models\Container
	 * @throws StorageAuthException
	 * @throws StorageNotAvailableException
	 */
	public function getContainer() {
		if (is_null($this->container)) {
			$this->container = $this->createContainer();
		}

		return $this->container;
	}

	/**
	 * @return \OpenStack\ObjectStore\v1\Models\Container
	 * @throws StorageAuthException
	 * @throws StorageNotAvailableException
	 */
	private function createContainer() {
		$client = $this->getClient();
		$objectStoreService = $client->objectStoreV1();

		$autoCreate = isset($this->params['autocreate']) && $this->params['autocreate'] === true;
		try {
			$container = $objectStoreService->getContainer($this->params['container']);
			if ($autoCreate) {
				$container->getMetadata();
			}
			return $container;
		} catch (BadResponseError $ex) {
			// if the container does not exist and autocreate is true try to create the container on the fly
			if ($ex->getResponse()->getStatusCode() === 404 && $autoCreate) {
				return $objectStoreService->createContainer([
					'name' => $this->params['container']
				]);
			} else {
				throw new StorageNotAvailableException('Invalid response while trying to get container info', StorageNotAvailableException::STATUS_ERROR, $ex);
			}
		} catch (ConnectException $e) {
			/** @var RequestInterface $request */
			$request = $e->getRequest();
			$host = $request->getUri()->getHost() . ':' . $request->getUri()->getPort();
			\OC::$server->getLogger()->error("Can't connect to object storage server at $host");
			throw new StorageNotAvailableException("Can't connect to object storage server at $host", StorageNotAvailableException::STATUS_ERROR, $e);
		}
	}
}


1			<?php
2
3			declare(strict_types=1);
4
5			/**
6			* @copyright Copyright (c) 2018 Robin Appelman <[email protected]>
7			*
8			* @author Christoph Wurst <[email protected]>
9			* @author Julien Lutran <[email protected]>
10			* @author Morris Jobke <[email protected]>
11			* @author Robin Appelman <[email protected]>
12			* @author Roeland Jago Douma <[email protected]>
13			* @author Volker <[email protected]>
14			* @author William Pain <[email protected]>
15			*
16			* @license GNU AGPL version 3 or any later version
17			*
18			* This program is free software: you can redistribute it and/or modify
19			* it under the terms of the GNU Affero General Public License as
20			* published by the Free Software Foundation, either version 3 of the
21			* License, or (at your option) any later version.
22			*
23			* This program is distributed in the hope that it will be useful,
24			* but WITHOUT ANY WARRANTY; without even the implied warranty of
25			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26			* GNU Affero General Public License for more details.
27			*
28			* You should have received a copy of the GNU Affero General Public License
29			* along with this program. If not, see <http://www.gnu.org/licenses/>.
30			*
31			*/
32
33			namespace OC\Files\ObjectStore;
34
35			use GuzzleHttp\Client;
36			use GuzzleHttp\Exception\ClientException;
37			use GuzzleHttp\Exception\ConnectException;
38			use GuzzleHttp\Exception\RequestException;
39			use GuzzleHttp\HandlerStack;
40			use OCP\Files\StorageAuthException;
41			use OCP\Files\StorageNotAvailableException;
42			use OCP\ICache;
43			use OCP\ILogger;
44			use OpenStack\Common\Auth\Token;
45			use OpenStack\Common\Error\BadResponseError;
46			use OpenStack\Common\Transport\Utils as TransportUtils;
47			use OpenStack\Identity\v2\Models\Catalog;
48			use OpenStack\Identity\v2\Service as IdentityV2Service;
49			use OpenStack\Identity\v3\Service as IdentityV3Service;
50			use OpenStack\ObjectStore\v1\Models\Container;
51			use OpenStack\OpenStack;
52			use Psr\Http\Message\RequestInterface;
53
54			class SwiftFactory {
55			private $cache;
56			private $params;
57			/** @var Container\|null */
58			private $container = null;
59			private $logger;
60
61			public const DEFAULT_OPTIONS = [
62			'autocreate' => false,
63			'urlType' => 'publicURL',
64			'catalogName' => 'swift',
65			'catalogType' => 'object-store'
66			];
67
68			public function __construct(ICache $cache, array $params, ILogger $logger) {
69			$this->cache = $cache;
70			$this->params = $params;
71			$this->logger = $logger;
72			}
73
74			/**
75			* Gets currently cached token id
76			*
77			* @return string
78			* @throws StorageAuthException
79			*/
80			public function getCachedTokenId() {
81			if ( !isset($this->params['cachedToken']) ) {
82			throw new StorageAuthException('Unauthenticated ObjectStore connection');
83			}
84
85			// Is it V2 token?
86			if ( isset($this->params['cachedToken']['token']) ) {
87			return $this->params['cachedToken']['token']['id'];
88			}
89
90			return $this->params['cachedToken']['id'];
91			}
92
93			private function getCachedToken(string $cacheKey) {
94			$cachedTokenString = $this->cache->get($cacheKey . '/token');
95			if ($cachedTokenString) {
96			return json_decode($cachedTokenString, true);
97			} else {
98			return null;
99			}
100			}
101
102			private function cacheToken(Token $token, string $serviceUrl, string $cacheKey) {
103			if ($token instanceof \OpenStack\Identity\v3\Models\Token) {
104			// for v3 the catalog is cached as part of the token, so no need to cache $serviceUrl separately
105			$value = $token->export();
106			} else {
107			/** @var \OpenStack\Identity\v2\Models\Token $token */
108			$value = [
109			'serviceUrl' => $serviceUrl,
110			'token' => [
111			'issued_at' => $token->issuedAt->format('c'),
112			'expires' => $token->expires->format('c'),
113			'id' => $token->id,
114			'tenant' => $token->tenant
115			]
116			];
117			}
118
119			$this->params['cachedToken'] = $value;
120			$this->cache->set($cacheKey . '/token', json_encode($value));
121			}
122
123			/**
124			* @return OpenStack
125			* @throws StorageAuthException
126			*/
127			private function getClient() {
128			if (isset($this->params['bucket'])) {
129			$this->params['container'] = $this->params['bucket'];
130			}
131			if (!isset($this->params['container'])) {
132			$this->params['container'] = 'nextcloud';
133			}
134			if (isset($this->params['user']) && is_array($this->params['user'])) {
135			$userName = $this->params['user']['name'];
136			} else {
137			if (!isset($this->params['username']) && isset($this->params['user'])) {
138			$this->params['username'] = $this->params['user'];
139			}
140			$userName = $this->params['username'];
141			}
142			if (!isset($this->params['tenantName']) && isset($this->params['tenant'])) {
143			$this->params['tenantName'] = $this->params['tenant'];
144			}
145			if (isset($this->params['domain'])) {
146			$this->params['scope']['project']['name'] = $this->params['tenant'];
147			$this->params['scope']['project']['domain']['name'] = $this->params['domain'];
148			}
149			$this->params = array_merge(self::DEFAULT_OPTIONS, $this->params);
150
151			$cacheKey = $userName . '@' . $this->params['url'] . '/' . $this->params['container'];
152			$token = $this->getCachedToken($cacheKey);
153			$this->params['cachedToken'] = $token;
154
155			$httpClient = new Client([
156			'base_uri' => TransportUtils::normalizeUrl($this->params['url']),
157			'handler' => HandlerStack::create()
158			]);
159
160			if (isset($this->params['user']) && is_array($this->params['user']) && isset($this->params['user']['name'])) {
161			if (!isset($this->params['scope'])) {
162			throw new StorageAuthException('Scope has to be defined for V3 requests');
163			}
164
165			return $this->auth(IdentityV3Service::factory($httpClient), $cacheKey);
166			} else {
167			return $this->auth(SwiftV2CachingAuthService::factory($httpClient), $cacheKey);
168			}
169			}
170
171			/**
172			* @param IdentityV2Service\|IdentityV3Service $authService
173			* @param string $cacheKey
174			* @return OpenStack
175			* @throws StorageAuthException
176			*/
177			private function auth($authService, string $cacheKey) {
178			$this->params['identityService'] = $authService;
179			$this->params['authUrl'] = $this->params['url'];
180
181			$cachedToken = $this->params['cachedToken'];
182			$hasValidCachedToken = false;
183			if (\is_array($cachedToken)) {
184			if ($authService instanceof IdentityV3Service) {
185			$token = $authService->generateTokenFromCache($cachedToken);
186			if (\is_null($token->catalog)) {
187			$this->logger->warning('Invalid cached token for swift, no catalog set: ' . json_encode($cachedToken));
188			} elseif ($token->hasExpired()) {
189			$this->logger->debug('Cached token for swift expired');
190			} else {
191			$hasValidCachedToken = true;
192			}
193			} else {
194			try {
195			/** @var \OpenStack\Identity\v2\Models\Token $token */
196			$token = $authService->model(\OpenStack\Identity\v2\Models\Token::class, $cachedToken['token']);
197			$now = new \DateTimeImmutable("now");
198			if ($token->expires > $now) {
199			$hasValidCachedToken = true;
200			$this->params['v2cachedToken'] = $token;
201			$this->params['v2serviceUrl'] = $cachedToken['serviceUrl'];
202			} else {
203			$this->logger->debug('Cached token for swift expired');
204			}
205			} catch (\Exception $e) {
206			$this->logger->logException($e);
207			}
208			}
209			}
210
211			if (!$hasValidCachedToken) {
212			unset($this->params['cachedToken']);
213			try {
214			list($token, $serviceUrl) = $authService->authenticate($this->params);
215			$this->cacheToken($token, $serviceUrl, $cacheKey);
216			} catch (ConnectException $e) {
217			throw new StorageAuthException('Failed to connect to keystone, verify the keystone url', $e);
218			} catch (ClientException $e) {
219			$statusCode = $e->getResponse()->getStatusCode();
220			if ($statusCode === 404) {
221			throw new StorageAuthException('Keystone not found, verify the keystone url', $e);
222			} elseif ($statusCode === 412) {
223			throw new StorageAuthException('Precondition failed, verify the keystone url', $e);
224			} elseif ($statusCode === 401) {
225			throw new StorageAuthException('Authentication failed, verify the username, password and possibly tenant', $e);
226			} else {
227			throw new StorageAuthException('Unknown error', $e);
228			}
229			} catch (RequestException $e) {
230			throw new StorageAuthException('Connection reset while connecting to keystone, verify the keystone url', $e);
231			}
232			}
233
234
235			$client = new OpenStack($this->params);
236
237			return $client;
238			}
239
240			/**
241			* @return \OpenStack\ObjectStore\v1\Models\Container
242			* @throws StorageAuthException
243			* @throws StorageNotAvailableException
244			*/
245			public function getContainer() {
246			if (is_null($this->container)) {
247			$this->container = $this->createContainer();
248			}
249
250			return $this->container;
251			}
252
253			/**
254			* @return \OpenStack\ObjectStore\v1\Models\Container
255			* @throws StorageAuthException
256			* @throws StorageNotAvailableException
257			*/
258			private function createContainer() {
259			$client = $this->getClient();
260			$objectStoreService = $client->objectStoreV1();
261
262			$autoCreate = isset($this->params['autocreate']) && $this->params['autocreate'] === true;
263			try {
264			$container = $objectStoreService->getContainer($this->params['container']);
265			if ($autoCreate) {
266			$container->getMetadata();
267			}
268			return $container;
269			} catch (BadResponseError $ex) {
270			// if the container does not exist and autocreate is true try to create the container on the fly
271			if ($ex->getResponse()->getStatusCode() === 404 && $autoCreate) {
272			return $objectStoreService->createContainer([
273			'name' => $this->params['container']
274			]);
275			} else {
276			throw new StorageNotAvailableException('Invalid response while trying to get container info', StorageNotAvailableException::STATUS_ERROR, $ex);
277			}
278			} catch (ConnectException $e) {
279			/** @var RequestInterface $request */
280			$request = $e->getRequest();
281			$host = $request->getUri()->getHost() . ':' . $request->getUri()->getPort();
282			\OC::$server->getLogger()->error("Can't connect to object storage server at $host");
283			throw new StorageNotAvailableException("Can't connect to object storage server at $host", StorageNotAvailableException::STATUS_ERROR, $e);
284			}
285			}
286			}
287

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SwiftFactory::__construct() A

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