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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2017 (original work) Open Assessment Technologies SA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | namespace oat\tao\model\upload; |
| 23 | |
| 24 | use oat\generis\persistence\PersistenceManager; |
| 25 | use oat\oatbox\filesystem\File; |
| 26 | use Zend\ServiceManager\ServiceLocatorAwareInterface; |
| 27 | use Zend\ServiceManager\ServiceLocatorAwareTrait; |
| 28 | use Zend\ServiceManager\ServiceLocatorInterface; |
| 29 | |
| 30 | class TempFlyStorageAssociation implements TmpLocalAwareStorageInterface, ServiceLocatorAwareInterface |
| 31 | { |
| 32 | use ServiceLocatorAwareTrait; |
| 33 | |
| 34 | /** |
| 35 | * @param ServiceLocatorInterface $serviceLocator |
| 36 | */ |
| 37 | public function __construct(ServiceLocatorInterface $serviceLocator) |
| 38 | { |
| 39 | $this->setServiceLocator($serviceLocator); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * @param File $file |
| 44 | * @throws \common_Exception |
| 45 | */ |
| 46 | public function setUpload(File $file) |
| 47 | { |
| 48 | $hash = $this->getHashedKey($file); |
| 49 | $this->set($hash, []); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * @param File $remote |
| 54 | * @param string $local |
| 55 | * @throws \common_Exception |
| 56 | */ |
| 57 | public function addLocalCopies(File $remote, $local) |
| 58 | { |
| 59 | $hash = $this->getHashedKey($remote); |
| 60 | $current = $this->getLocalCopies($remote); |
| 61 | $current[] = $local; |
| 62 | $this->set($hash, $current); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * @param $file |
| 67 | * @return array |
| 68 | */ |
| 69 | public function getLocalCopies(File $file) |
| 70 | { |
| 71 | $result = $this->get($this->getHashedKey($file)); |
| 72 | return is_array($result) ? $result : []; |
| 73 | } |
| 74 | |
| 75 | |
| 76 | /** |
| 77 | * @param File $file |
| 78 | * @return string |
| 79 | */ |
| 80 | private function getHashedKey(File $file) |
| 81 | { |
| 82 | return md5($file->getPrefix()); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @param File $file |
| 87 | */ |
| 88 | public function removeFiles(File $file) |
| 89 | { |
| 90 | $this->remove($this->getHashedKey($file)); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @return \common_persistence_KeyValuePersistence |
| 95 | */ |
| 96 | private function getKvStorage() |
| 97 | { |
| 98 | /** @var PersistenceManager $pm */ |
| 99 | $pm = $this->getServiceLocator()->get(PersistenceManager::SERVICE_ID); |
| 100 | return $pm->getPersistenceById('default_kv'); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @param $key |
| 105 | * @param $val |
| 106 | * @throws \common_Exception |
| 107 | */ |
| 108 | private function set($key, $val) |
| 109 | { |
| 110 | $key = $this->getPrefix() . $key; |
| 111 | $this->getKvStorage()->set($key, json_encode($val)); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * @param $key |
| 116 | */ |
| 117 | private function remove($key) |
| 118 | { |
| 119 | $key = $this->getPrefix() . $key; |
| 120 | $this->getKvStorage()->del($key); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * @param $key |
| 125 | * @return mixed|null |
| 126 | */ |
| 127 | private function get($key) |
| 128 | { |
| 129 | $key = $this->getPrefix() . $key; |
| 130 | if ($this->getKvStorage()->exists($key)) { |
| 131 | return json_decode($this->getKvStorage()->get($key), true); |
| 132 | } |
| 133 | return null; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * @return string |
| 138 | */ |
| 139 | private function getPrefix() |
| 140 | { |
| 141 | return static::class; |
| 142 | } |
| 143 | } |