root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Cache / Memcache.php @ 41cc1b08
1 | 41cc1b08 | Assos Assos | <?php
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2 | /**
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3 | * SimplePie
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4 | *
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5 | * A PHP-Based RSS and Atom Feed Framework.
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6 | * Takes the hard work out of managing a complete RSS/Atom solution.
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7 | *
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8 | * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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9 | * All rights reserved.
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10 | *
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11 | * Redistribution and use in source and binary forms, with or without modification, are
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12 | * permitted provided that the following conditions are met:
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13 | *
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14 | * * Redistributions of source code must retain the above copyright notice, this list of
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15 | * conditions and the following disclaimer.
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16 | *
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17 | * * Redistributions in binary form must reproduce the above copyright notice, this list
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18 | * of conditions and the following disclaimer in the documentation and/or other materials
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19 | * provided with the distribution.
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20 | *
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21 | * * Neither the name of the SimplePie Team nor the names of its contributors may be used
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22 | * to endorse or promote products derived from this software without specific prior
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23 | * written permission.
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24 | *
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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26 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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27 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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28 | * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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32 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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33 | * POSSIBILITY OF SUCH DAMAGE.
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34 | *
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35 | * @package SimplePie
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36 | * @version 1.3.1
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37 | * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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38 | * @author Ryan Parman
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39 | * @author Geoffrey Sneddon
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40 | * @author Ryan McCue
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41 | * @link http://simplepie.org/ SimplePie
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42 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License
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43 | */
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44 | |||
45 | /**
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46 | * Caches data to memcache
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47 | *
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48 | * Registered for URLs with the "memcache" protocol
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49 | *
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50 | * For example, `memcache://localhost:11211/?timeout=3600&prefix=sp_` will
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51 | * connect to memcache on `localhost` on port 11211. All tables will be
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52 | * prefixed with `sp_` and data will expire after 3600 seconds
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53 | *
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54 | * @package SimplePie
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55 | * @subpackage Caching
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56 | * @uses Memcache
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57 | */
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58 | class SimplePie_Cache_Memcache implements SimplePie_Cache_Base |
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59 | { |
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60 | /**
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61 | * Memcache instance
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62 | *
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63 | * @var Memcache
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64 | */
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65 | protected $cache; |
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66 | |||
67 | /**
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68 | * Options
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69 | *
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70 | * @var array
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71 | */
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72 | protected $options; |
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73 | |||
74 | /**
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75 | * Cache name
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76 | *
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77 | * @var string
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78 | */
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79 | protected $name; |
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80 | |||
81 | /**
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82 | * Create a new cache object
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83 | *
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84 | * @param string $location Location string (from SimplePie::$cache_location)
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85 | * @param string $name Unique ID for the cache
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86 | * @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
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87 | */
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88 | public function __construct($location, $name, $type) |
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89 | { |
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90 | $this->options = array( |
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91 | 'host' => '127.0.0.1', |
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92 | 'port' => 11211, |
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93 | 'extras' => array( |
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94 | 'timeout' => 3600, // one hour |
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95 | 'prefix' => 'simplepie_', |
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96 | ), |
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97 | ); |
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98 | $parsed = SimplePie_Cache::parse_URL($location); |
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99 | $this->options['host'] = empty($parsed['host']) ? $this->options['host'] : $parsed['host']; |
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100 | $this->options['port'] = empty($parsed['port']) ? $this->options['port'] : $parsed['port']; |
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101 | $this->options['extras'] = array_merge($this->options['extras'], $parsed['extras']); |
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102 | $this->name = $this->options['extras']['prefix'] . md5("$name:$type"); |
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103 | |||
104 | $this->cache = new Memcache(); |
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105 | $this->cache->addServer($this->options['host'], (int) $this->options['port']); |
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106 | } |
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107 | |||
108 | /**
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109 | * Save data to the cache
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110 | *
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111 | * @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
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112 | * @return bool Successfulness
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113 | */
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114 | public function save($data) |
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115 | { |
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116 | if ($data instanceof SimplePie) |
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117 | { |
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118 | $data = $data->data; |
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119 | } |
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120 | return $this->cache->set($this->name, serialize($data), MEMCACHE_COMPRESSED, (int) $this->options['extras']['timeout']); |
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121 | } |
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122 | |||
123 | /**
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124 | * Retrieve the data saved to the cache
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125 | *
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126 | * @return array Data for SimplePie::$data
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127 | */
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128 | public function load() |
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129 | { |
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130 | $data = $this->cache->get($this->name); |
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131 | |||
132 | if ($data !== false) |
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133 | { |
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134 | return unserialize($data); |
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135 | } |
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136 | return false; |
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137 | } |
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138 | |||
139 | /**
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140 | * Retrieve the last modified time for the cache
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141 | *
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142 | * @return int Timestamp
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143 | */
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144 | public function mtime() |
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145 | { |
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146 | $data = $this->cache->get($this->name); |
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147 | |||
148 | if ($data !== false) |
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149 | { |
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150 | // essentially ignore the mtime because Memcache expires on it's own
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151 | return time(); |
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152 | } |
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153 | |||
154 | return false; |
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155 | } |
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156 | |||
157 | /**
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158 | * Set the last modified time to the current time
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159 | *
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160 | * @return bool Success status
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161 | */
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162 | public function touch() |
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163 | { |
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164 | $data = $this->cache->get($this->name); |
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165 | |||
166 | if ($data !== false) |
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167 | { |
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168 | return $this->cache->set($this->name, $data, MEMCACHE_COMPRESSED, (int) $this->duration); |
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169 | } |
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170 | |||
171 | return false; |
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172 | } |
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173 | |||
174 | /**
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175 | * Remove the cache
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176 | *
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177 | * @return bool Success status
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178 | */
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179 | public function unlink() |
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180 | { |
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181 | return $this->cache->delete($this->name, 0); |
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182 | } |
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183 | } |