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1 <?php
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2
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3 namespace Doctrine\Common\Cache;
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4
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5 use Predis\ClientInterface;
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6
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7 /**
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8 * Predis cache provider.
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9 *
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10 * @author othillo <othillo@othillo.nl>
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11 */
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12 class PredisCache extends CacheProvider
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13 {
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14 /**
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15 * @var ClientInterface
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16 */
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17 private $client;
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18
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19 /**
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20 * @param ClientInterface $client
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21 *
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22 * @return void
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23 */
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24 public function __construct(ClientInterface $client)
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25 {
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26 $this->client = $client;
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27 }
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28
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29 /**
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30 * {@inheritdoc}
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31 */
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32 protected function doFetch($id)
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33 {
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34 $result = $this->client->get($id);
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35 if (null === $result) {
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36 return false;
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37 }
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38
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39 return unserialize($result);
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40 }
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41
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42 /**
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43 * {@inheritdoc}
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44 */
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45 protected function doFetchMultiple(array $keys)
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46 {
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47 $fetchedItems = call_user_func_array(array($this->client, 'mget'), $keys);
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48
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49 return array_map('unserialize', array_filter(array_combine($keys, $fetchedItems)));
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50 }
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51
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52 /**
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53 * {@inheritdoc}
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54 */
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55 protected function doSaveMultiple(array $keysAndValues, $lifetime = 0)
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56 {
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57 if ($lifetime) {
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58 $success = true;
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59
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60 // Keys have lifetime, use SETEX for each of them
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61 foreach ($keysAndValues as $key => $value) {
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62 $response = $this->client->setex($key, $lifetime, serialize($value));
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63
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64 if ((string) $response != 'OK') {
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65 $success = false;
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66 }
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67 }
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68
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69 return $success;
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70 }
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71
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72 // No lifetime, use MSET
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73 $response = $this->client->mset(array_map(function ($value) {
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74 return serialize($value);
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75 }, $keysAndValues));
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76
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77 return (string) $response == 'OK';
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78 }
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79
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80 /**
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81 * {@inheritdoc}
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82 */
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83 protected function doContains($id)
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84 {
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85 return (bool) $this->client->exists($id);
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86 }
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87
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88 /**
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89 * {@inheritdoc}
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90 */
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91 protected function doSave($id, $data, $lifeTime = 0)
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92 {
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93 $data = serialize($data);
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94 if ($lifeTime > 0) {
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95 $response = $this->client->setex($id, $lifeTime, $data);
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96 } else {
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97 $response = $this->client->set($id, $data);
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98 }
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99
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100 return $response === true || $response == 'OK';
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101 }
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102
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103 /**
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104 * {@inheritdoc}
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105 */
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106 protected function doDelete($id)
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107 {
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108 return $this->client->del($id) >= 0;
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109 }
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110
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111 /**
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112 * {@inheritdoc}
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113 */
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114 protected function doFlush()
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115 {
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116 $response = $this->client->flushdb();
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117
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118 return $response === true || $response == 'OK';
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119 }
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120
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121 /**
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122 * {@inheritdoc}
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123 */
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124 protected function doGetStats()
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125 {
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126 $info = $this->client->info();
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127
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128 return array(
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129 Cache::STATS_HITS => $info['Stats']['keyspace_hits'],
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130 Cache::STATS_MISSES => $info['Stats']['keyspace_misses'],
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131 Cache::STATS_UPTIME => $info['Server']['uptime_in_seconds'],
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132 Cache::STATS_MEMORY_USAGE => $info['Memory']['used_memory'],
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133 Cache::STATS_MEMORY_AVAILABLE => false
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134 );
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135 }
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136 }
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