Updater::__construct() - Code Metrics - Inspection of "Merge pull request #21628 from nextcloud/external-..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 927582...173f8a )

by Morris

created 2020-07-23 19:35 UTC

Updater::__construct() A

↳ Parent: Updater

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	1
dl	0
loc	5
rs	10
c	0
b	0
f	0

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Björn Schießle <[email protected]>
 * @author Christoph Wurst <[email protected]>
 * @author Daniel Jagszent <[email protected]>
 * @author Michael Gapczynski <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Vincent Petry <[email protected]>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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, version 3,
 * along with this program. If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OC\Files\Cache;

use OC\Files\FileInfo;
use OCP\Files\Cache\ICacheEntry;
use OCP\Files\Cache\IUpdater;
use OCP\Files\Storage\IStorage;

/**
 * Update the cache and propagate changes
 *
 */
class Updater implements IUpdater {
	/**
	 * @var bool
	 */
	protected $enabled = true;

	/**
	 * @var \OC\Files\Storage\Storage
	 */
	protected $storage;

	/**
	 * @var \OC\Files\Cache\Propagator
	 */
	protected $propagator;

	/**
	 * @var Scanner
	 */
	protected $scanner;

	/**
	 * @var Cache
	 */
	protected $cache;

	/**
	 * @param \OC\Files\Storage\Storage $storage
	 */
	public function __construct(\OC\Files\Storage\Storage $storage) {
		$this->storage = $storage;
		$this->propagator = $storage->getPropagator();
		$this->scanner = $storage->getScanner();
		$this->cache = $storage->getCache();
	}

	/**
	 * Disable updating the cache trough this updater
	 */
	public function disable() {
		$this->enabled = false;
	}

	/**
	 * Re-enable the updating of the cache trough this updater
	 */
	public function enable() {
		$this->enabled = true;
	}

	/**
	 * Get the propagator for etags and mtime for the view the updater works on
	 *
	 * @return Propagator
	 */
	public function getPropagator() {
		return $this->propagator;
	}

	/**
	 * Propagate etag and mtime changes for the parent folders of $path up to the root of the filesystem
	 *
	 * @param string $path the path of the file to propagate the changes for
	 * @param int|null $time the timestamp to set as mtime for the parent folders, if left out the current time is used
	 */
	public function propagate($path, $time = null) {
		if (Scanner::isPartialFile($path)) {
			return;
		}
		$this->propagator->propagateChange($path, $time);
	}

	/**
	 * Update the cache for $path and update the size, etag and mtime of the parent folders
	 *
	 * @param string $path
	 * @param int $time
	 */
	public function update($path, $time = null) {
		if (!$this->enabled or Scanner::isPartialFile($path)) {
			return;
		}
		if (is_null($time)) {
			$time = time();
		}

		$data = $this->scanner->scan($path, Scanner::SCAN_SHALLOW, -1, false);
		if (
			isset($data['oldSize']) && isset($data['size']) &&
			!$data['encrypted'] // encryption is a pita and touches the cache itself
		) {
			$sizeDifference = $data['size'] - $data['oldSize'];
		} else {
			// scanner didn't provide size info, fallback to full size calculation
			$sizeDifference = 0;
			if ($this->cache instanceof Cache) {

				$this->cache->correctFolderSize($path, $data);
			}
		}
		$this->correctParentStorageMtime($path);
		$this->propagator->propagateChange($path, $time, $sizeDifference);
	}

	/**
	 * Remove $path from the cache and update the size, etag and mtime of the parent folders
	 *
	 * @param string $path
	 */
	public function remove($path) {
		if (!$this->enabled or Scanner::isPartialFile($path)) {
			return;
		}

		$parent = dirname($path);
		if ($parent === '.') {
			$parent = '';
		}

		$entry = $this->cache->get($path);

		$this->cache->remove($path);

		$this->correctParentStorageMtime($path);
		if ($entry instanceof ICacheEntry) {
			$this->propagator->propagateChange($path, time(), -$entry->getSize());
		} else {
			$this->propagator->propagateChange($path, time());
			if ($this->cache instanceof Cache) {

				$this->cache->correctFolderSize($parent);
			}
		}
	}

	/**
	 * Rename a file or folder in the cache and update the size, etag and mtime of the parent folders
	 *
	 * @param IStorage $sourceStorage
	 * @param string $source
	 * @param string $target
	 */
	public function renameFromStorage(IStorage $sourceStorage, $source, $target) {
		if (!$this->enabled or Scanner::isPartialFile($source) or Scanner::isPartialFile($target)) {
			return;
		}

		$time = time();

		$sourceCache = $sourceStorage->getCache();
		$sourceUpdater = $sourceStorage->getUpdater();
		$sourcePropagator = $sourceStorage->getPropagator();

		$sourceInfo = $sourceCache->get($source);

		if ($sourceInfo !== false) {
			if ($this->cache->inCache($target)) {
				$this->cache->remove($target);
			}

			if ($sourceStorage === $this->storage) {

				$this->cache->move($source, $target);
			} else {
				$this->cache->moveFromCache($sourceCache, $source, $target);
			}

			if (pathinfo($source, PATHINFO_EXTENSION) !== pathinfo($target, PATHINFO_EXTENSION) && $sourceInfo->getMimeType() !== FileInfo::MIMETYPE_FOLDER) {
				// handle mime type change
				$mimeType = $this->storage->getMimeType($target);
				$fileId = $this->cache->getId($target);
				$this->cache->update($fileId, ['mimetype' => $mimeType]);
			}
		}

		if ($sourceCache instanceof Cache) {
			$sourceCache->correctFolderSize($source);
		}
		if ($this->cache instanceof Cache) {

			$this->cache->correctFolderSize($target);
		}
		if ($sourceUpdater instanceof Updater) {
			$sourceUpdater->correctParentStorageMtime($source);
		}
		$this->correctParentStorageMtime($target);
		$this->updateStorageMTimeOnly($target);
		$sourcePropagator->propagateChange($source, $time);
		$this->propagator->propagateChange($target, $time);
	}

	private function updateStorageMTimeOnly($internalPath) {
		$fileId = $this->cache->getId($internalPath);
		if ($fileId !== -1) {
			$mtime = $this->storage->filemtime($internalPath);
			if ($mtime !== false) {
				$this->cache->update(
					$fileId, [
						'mtime' => null, // this magic tells it to not overwrite mtime
						'storage_mtime' => $mtime
					]
				);
			}
		}
	}

	/**
	 * update the storage_mtime of the direct parent in the cache to the mtime from the storage
	 *
	 * @param string $internalPath
	 */
	private function correctParentStorageMtime($internalPath) {
		$parentId = $this->cache->getParentId($internalPath);
		$parent = dirname($internalPath);
		if ($parentId != -1) {
			$mtime = $this->storage->filemtime($parent);
			if ($mtime !== false) {
				$this->cache->update($parentId, ['storage_mtime' => $mtime]);
			}
		}
	}
}


1			<?php
2			/**
3			* @copyright Copyright (c) 2016, ownCloud, Inc.
4			*
5			* @author Björn Schießle <[email protected]>
6			* @author Christoph Wurst <[email protected]>
7			* @author Daniel Jagszent <[email protected]>
8			* @author Michael Gapczynski <[email protected]>
9			* @author Morris Jobke <[email protected]>
10			* @author Robin Appelman <[email protected]>
11			* @author Vincent Petry <[email protected]>
12			*
13			* @license AGPL-3.0
14			*
15			* This code is free software: you can redistribute it and/or modify
16			* it under the terms of the GNU Affero General Public License, version 3,
17			* as published by the Free Software Foundation.
18			*
19			* This program is distributed in the hope that it will be useful,
20			* but WITHOUT ANY WARRANTY; without even the implied warranty of
21			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22			* GNU Affero General Public License for more details.
23			*
24			* You should have received a copy of the GNU Affero General Public License, version 3,
25			* along with this program. If not, see <http://www.gnu.org/licenses/>
26			*
27			*/
28
29			namespace OC\Files\Cache;
30
31			use OC\Files\FileInfo;
32			use OCP\Files\Cache\ICacheEntry;
33			use OCP\Files\Cache\IUpdater;
34			use OCP\Files\Storage\IStorage;
35
36			/**
37			* Update the cache and propagate changes
38			*
39			*/
40			class Updater implements IUpdater {
41			/**
42			* @var bool
43			*/
44			protected $enabled = true;
45
46			/**
47			* @var \OC\Files\Storage\Storage
48			*/
49			protected $storage;
50
51			/**
52			* @var \OC\Files\Cache\Propagator
53			*/
54			protected $propagator;
55
56			/**
57			* @var Scanner
58			*/
59			protected $scanner;
60
61			/**
62			* @var Cache
63			*/
64			protected $cache;
65
66			/**
67			* @param \OC\Files\Storage\Storage $storage
68			*/
69			public function __construct(\OC\Files\Storage\Storage $storage) {
70			$this->storage = $storage;
71			$this->propagator = $storage->getPropagator();
72			$this->scanner = $storage->getScanner();
73			$this->cache = $storage->getCache();
74			}
75
76			/**
77			* Disable updating the cache trough this updater
78			*/
79			public function disable() {
80			$this->enabled = false;
81			}
82
83			/**
84			* Re-enable the updating of the cache trough this updater
85			*/
86			public function enable() {
87			$this->enabled = true;
88			}
89
90			/**
91			* Get the propagator for etags and mtime for the view the updater works on
92			*
93			* @return Propagator
94			*/
95			public function getPropagator() {
96			return $this->propagator;
97			}
98
99			/**
100			* Propagate etag and mtime changes for the parent folders of $path up to the root of the filesystem
101			*
102			* @param string $path the path of the file to propagate the changes for
103			* @param int\|null $time the timestamp to set as mtime for the parent folders, if left out the current time is used
104			*/
105			public function propagate($path, $time = null) {
106			if (Scanner::isPartialFile($path)) {
107			return;
108			}
109			$this->propagator->propagateChange($path, $time);
110			}
111
112			/**
113			* Update the cache for $path and update the size, etag and mtime of the parent folders
114			*
115			* @param string $path
116			* @param int $time
117			*/
118			public function update($path, $time = null) {
119			if (!$this->enabled or Scanner::isPartialFile($path)) {
120			return;
121			}
122			if (is_null($time)) {
123			$time = time();
124			}
125
126			$data = $this->scanner->scan($path, Scanner::SCAN_SHALLOW, -1, false);
127			if (
128			isset($data['oldSize']) && isset($data['size']) &&
129			!$data['encrypted'] // encryption is a pita and touches the cache itself
130			) {
131			$sizeDifference = $data['size'] - $data['oldSize'];
132			} else {
133			// scanner didn't provide size info, fallback to full size calculation
134			$sizeDifference = 0;
135			if ($this->cache instanceof Cache) {
			0 ignored issues – show introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report `$this->cache` is always a sub-type of `OC\Files\Cache\Cache`. Loading history...
136			$this->cache->correctFolderSize($path, $data);
137			}
138			}
139			$this->correctParentStorageMtime($path);
140			$this->propagator->propagateChange($path, $time, $sizeDifference);
141			}
142
143			/**
144			* Remove $path from the cache and update the size, etag and mtime of the parent folders
145			*
146			* @param string $path
147			*/
148			public function remove($path) {
149			if (!$this->enabled or Scanner::isPartialFile($path)) {
150			return;
151			}
152
153			$parent = dirname($path);
154			if ($parent === '.') {
155			$parent = '';
156			}
157
158			$entry = $this->cache->get($path);
159
160			$this->cache->remove($path);
161
162			$this->correctParentStorageMtime($path);
163			if ($entry instanceof ICacheEntry) {
164			$this->propagator->propagateChange($path, time(), -$entry->getSize());
165			} else {
166			$this->propagator->propagateChange($path, time());
167			if ($this->cache instanceof Cache) {
			0 ignored issues – show introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report `$this->cache` is always a sub-type of `OC\Files\Cache\Cache`. Loading history...
168			$this->cache->correctFolderSize($parent);
169			}
170			}
171			}
172
173			/**
174			* Rename a file or folder in the cache and update the size, etag and mtime of the parent folders
175			*
176			* @param IStorage $sourceStorage
177			* @param string $source
178			* @param string $target
179			*/
180			public function renameFromStorage(IStorage $sourceStorage, $source, $target) {
181			if (!$this->enabled or Scanner::isPartialFile($source) or Scanner::isPartialFile($target)) {
182			return;
183			}
184
185			$time = time();
186
187			$sourceCache = $sourceStorage->getCache();
188			$sourceUpdater = $sourceStorage->getUpdater();
189			$sourcePropagator = $sourceStorage->getPropagator();
190
191			$sourceInfo = $sourceCache->get($source);
192
193			if ($sourceInfo !== false) {
194			if ($this->cache->inCache($target)) {
195			$this->cache->remove($target);
196			}
197
198			if ($sourceStorage === $this->storage) {
			0 ignored issues – show introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report The condition `$sourceStorage === $this->storage` is always `false`. Loading history...
199			$this->cache->move($source, $target);
200			} else {
201			$this->cache->moveFromCache($sourceCache, $source, $target);
202			}
203
204			if (pathinfo($source, PATHINFO_EXTENSION) !== pathinfo($target, PATHINFO_EXTENSION) && $sourceInfo->getMimeType() !== FileInfo::MIMETYPE_FOLDER) {
205			// handle mime type change
206			$mimeType = $this->storage->getMimeType($target);
207			$fileId = $this->cache->getId($target);
208			$this->cache->update($fileId, ['mimetype' => $mimeType]);
209			}
210			}
211
212			if ($sourceCache instanceof Cache) {
213			$sourceCache->correctFolderSize($source);
214			}
215			if ($this->cache instanceof Cache) {
			0 ignored issues – show introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report `$this->cache` is always a sub-type of `OC\Files\Cache\Cache`. Loading history...
216			$this->cache->correctFolderSize($target);
217			}
218			if ($sourceUpdater instanceof Updater) {
219			$sourceUpdater->correctParentStorageMtime($source);
220			}
221			$this->correctParentStorageMtime($target);
222			$this->updateStorageMTimeOnly($target);
223			$sourcePropagator->propagateChange($source, $time);
224			$this->propagator->propagateChange($target, $time);
225			}
226
227			private function updateStorageMTimeOnly($internalPath) {
228			$fileId = $this->cache->getId($internalPath);
229			if ($fileId !== -1) {
230			$mtime = $this->storage->filemtime($internalPath);
231			if ($mtime !== false) {
232			$this->cache->update(
233			$fileId, [
234			'mtime' => null, // this magic tells it to not overwrite mtime
235			'storage_mtime' => $mtime
236			]
237			);
238			}
239			}
240			}
241
242			/**
243			* update the storage_mtime of the direct parent in the cache to the mtime from the storage
244			*
245			* @param string $internalPath
246			*/
247			private function correctParentStorageMtime($internalPath) {
248			$parentId = $this->cache->getParentId($internalPath);
249			$parent = dirname($internalPath);
250			if ($parentId != -1) {
251			$mtime = $this->storage->filemtime($parent);
252			if ($mtime !== false) {
253			$this->cache->update($parentId, ['storage_mtime' => $mtime]);
254			}
255			}
256			}
257			}
258

nextcloud / server

Push — master ( 927582...173f8a )

Updater::__construct() A

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Duplication

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