Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Xhgui_Storage_File often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Xhgui_Storage_File, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 3 | class Xhgui_Storage_File extends Xhgui_Storage_Abstract implements Xhgui_StorageInterface, Xhgui_WatchedFunctionsStorageInterface |
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| 4 | { |
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| 5 | |||
| 6 | /** |
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| 7 | * @var string |
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| 8 | */ |
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| 9 | protected $path = '../data/'; |
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| 10 | |||
| 11 | /** |
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| 12 | * @var string |
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| 13 | */ |
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| 14 | protected $prefix = 'xhgui.data'; |
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| 15 | |||
| 16 | /** |
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| 17 | * @var bool|mixed |
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| 18 | */ |
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| 19 | protected $separateMeta = true; |
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| 20 | |||
| 21 | /** |
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| 22 | * @var mixed |
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| 23 | */ |
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| 24 | protected $dataSerializer; |
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| 25 | |||
| 26 | /** |
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| 27 | * @var mixed |
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| 28 | */ |
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| 29 | protected $metaSerializer; |
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| 30 | |||
| 31 | /** |
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| 32 | * @var string |
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| 33 | */ |
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| 34 | protected $watchedFunctionsPathPrefix = '../watched_functions/'; |
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| 35 | |||
| 36 | /** |
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| 37 | * @var int[] |
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| 38 | */ |
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| 39 | protected $countCache; |
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| 40 | |||
| 41 | /** |
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| 42 | * @var Xhgui_Storage_Filter |
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| 43 | */ |
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| 44 | private $filter; |
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| 45 | |||
| 46 | /** |
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| 47 | * Xhgui_Storage_File constructor. |
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| 48 | * @param $config |
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| 49 | */ |
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| 50 | public function __construct($config) |
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| 51 | { |
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| 52 | |||
| 53 | // @todo config! |
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| 54 | $this->path = '../data/'; |
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| 55 | |||
| 56 | // @todo config! |
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| 57 | $this->prefix = 'xhgui.data'; |
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| 58 | |||
| 59 | $this->separateMeta = $config['save.handler.separate_meta']; |
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| 60 | $this->dataSerializer = $config['save.handler.serializer']; |
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| 61 | $this->metaSerializer = $config['save.handler.meta_serializer']; |
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| 62 | } |
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| 63 | |||
| 64 | /** |
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| 65 | * @inheritDoc |
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| 66 | * @param Xhgui_Storage_Filter $filter |
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| 67 | * @param bool $projections |
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| 68 | * @return Xhgui_Storage_ResultSet |
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| 69 | */ |
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| 70 | public function find(Xhgui_Storage_Filter $filter, $projections = false) |
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| 71 | { |
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| 72 | $result = glob($this->path. $this->prefix . '*'); |
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| 73 | sort($result); |
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| 74 | |||
| 75 | $ret = []; |
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| 76 | foreach ($result as $i => $file) { |
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| 77 | // skip meta files. |
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| 78 | if (strpos($file, '.meta') !== false) { |
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| 79 | continue; |
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| 80 | } |
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| 81 | |||
| 82 | // try to detect timestamp in filename. |
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| 83 | $requestTimeFromFilename = $this->getRequestTimeFromFilename($file); |
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| 84 | if (!empty($requestTimeFromFilename)) { |
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| 85 | if (null !== $filter->getStartDate() && |
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| 86 | $this->getDateTimeFromString($filter->getStartDate(), 'start') >= $requestTimeFromFilename) { |
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| 87 | continue; |
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| 88 | } |
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| 89 | |||
| 90 | if (null !== $filter->getEndDate() && |
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| 91 | $this->getDateTimeFromString($filter->getEndDate(), 'end') <= $requestTimeFromFilename ) { |
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| 92 | continue; |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | $metaFile = $this->getMetafileNameFromProfileName($file); |
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| 97 | |||
| 98 | $meta = $this->importFile($metaFile, true); |
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| 99 | if ($meta === false) { |
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| 100 | continue; |
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| 101 | } |
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| 102 | |||
| 103 | $profile = $this->importFile($file, false); |
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| 104 | if ($profile === false) { |
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| 105 | continue; |
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| 106 | } |
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| 107 | |||
| 108 | if (!empty($profile['meta'])) { |
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| 109 | $meta = array_merge($meta, $profile['meta']); |
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| 110 | } |
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| 111 | |||
| 112 | if (!empty($profile['profile'])) { |
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| 113 | $profile = $profile['profile']; |
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| 114 | } |
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| 115 | |||
| 116 | if (!empty($profile['_id'])) { |
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| 117 | $id = $profile['_id']; |
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| 118 | } else { |
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| 119 | $id = basename($file); |
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| 120 | } |
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| 121 | if (!empty($profile)) { |
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| 122 | $ret[$id] = [ |
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| 123 | 'profile' => $profile, |
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| 124 | '_id' => $id, |
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| 125 | 'meta' => $meta, |
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| 126 | ]; |
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| 127 | } else { |
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| 128 | $ret[$id] = $profile; |
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| 129 | } |
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| 130 | } |
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| 131 | |||
| 132 | try { |
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| 133 | if (!empty($filter->getSort()) && !empty($ret)) { |
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| 134 | $this->filter = $filter; |
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| 135 | usort($ret, array($this, 'sortByColumn')); |
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| 136 | unset($this->filter); |
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| 137 | } |
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| 138 | } catch (InvalidArgumentException $e) { |
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| 139 | // ignore for now. |
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| 140 | } |
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| 141 | |||
| 142 | $cacheId = md5(serialize($filter->toArray())); |
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| 143 | |||
| 144 | $this->countCache[$cacheId] = count($ret); |
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| 145 | $ret = array_slice($ret, $filter->getPerPage()*($filter->getPage()-1), $filter->getPerPage()); |
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| 146 | $ret = array_column($ret, null, '_id'); |
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| 147 | |||
| 148 | return new Xhgui_Storage_ResultSet($ret, $this->countCache[$cacheId]); |
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| 149 | } |
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| 150 | |||
| 151 | /** |
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| 152 | * @inheritDoc |
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| 153 | * @param Xhgui_Storage_Filter $filter |
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| 154 | * @return int |
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| 155 | */ |
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| 156 | public function count(Xhgui_Storage_Filter $filter) |
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| 157 | { |
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| 158 | $cacheId = md5(serialize($filter->toArray())); |
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| 159 | if (empty($this->countCache[$cacheId])) { |
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| 160 | $this->find($filter); |
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| 161 | } |
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| 162 | return $this->countCache[$cacheId]; |
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| 163 | } |
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| 164 | |||
| 165 | /** |
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| 166 | * @inheritDoc |
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| 167 | * @param $id |
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| 168 | * @return mixed |
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| 169 | */ |
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| 170 | public function findOne($id) |
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| 171 | { |
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| 172 | $filter = new Xhgui_Storage_Filter(); |
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| 173 | $filter->setId($id); |
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| 174 | $resultSet = $this->find($id); |
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| 175 | return $resultSet->current(); |
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| 176 | } |
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| 177 | |||
| 178 | /** |
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| 179 | * @inheritDoc |
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| 180 | * @param $id |
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| 181 | * @return bool |
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| 182 | */ |
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| 183 | public function remove($id) |
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| 184 | { |
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| 185 | if (file_exists($this->path.$id)) { |
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| 186 | $metaFileName = $this->getMetafileNameFromProfileName($id); |
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| 187 | if (file_exists($this->path.$metaFileName)) { |
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| 188 | unlink($this->path.$metaFileName); |
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| 189 | } |
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| 190 | unlink($this->path.$id); |
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| 191 | return true; |
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| 192 | } |
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| 193 | return false; |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 197 | * @inheritDoc |
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| 198 | */ |
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| 199 | public function drop() |
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| 200 | { |
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| 201 | array_map('unlink', glob($this->path.'*.xhprof')); |
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| 202 | array_map('unlink', glob($this->path.'*.meta')); |
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| 203 | } |
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| 204 | |||
| 205 | /** |
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| 206 | * @inheritDoc |
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| 207 | * @param $match |
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| 208 | * @param $col |
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| 209 | * @param int $percentile |
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| 210 | * @return array |
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| 211 | */ |
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| 212 | public function aggregate(Xhgui_Storage_Filter $filter, $col, $percentile = 1) |
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| 213 | { |
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| 214 | $ret = $this->find($filter); |
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| 215 | |||
| 216 | $result = [ |
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| 217 | 'ok' => 1, |
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| 218 | 'result' => [], |
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| 219 | ]; |
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| 220 | |||
| 221 | foreach ($ret as $row) { |
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| 222 | $request_date = $row['meta']['request_date']; |
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| 223 | $result['result'][$request_date]['wall_times'][] = $row['profile']['main()']['wt']; |
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| 224 | $result['result'][$request_date]['cpu_times'][] = $row['profile']['main()']['cpu']; |
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| 225 | $result['result'][$request_date]['mu_times'][] = $row['profile']['main()']['mu']; |
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| 226 | $result['result'][$request_date]['pmu_times'][] = $row['profile']['main()']['pmu']; |
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| 227 | |||
| 228 | if (empty($result['result'][$request_date]['row_count'])) { |
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| 229 | $result['result'][$request_date]['row_count'] = 0; |
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| 230 | } |
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| 231 | $result['result'][$request_date]['row_count']++; |
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| 232 | |||
| 233 | $result['result'][$request_date]['raw_index'] = |
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| 234 | $result['result'][$request_date]['row_count']*($percentile/100); |
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| 235 | |||
| 236 | $result['result'][$request_date]['_id']= $request_date; |
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| 237 | } |
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| 238 | |||
| 239 | return $result; |
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| 240 | } |
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| 241 | |||
| 242 | |||
| 243 | /** |
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| 244 | * Column sorter |
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| 245 | * |
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| 246 | * @param $a |
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| 247 | * @param $b |
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| 248 | * @return int |
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| 249 | */ |
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| 250 | public function sortByColumn($a, $b) |
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| 251 | { |
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| 252 | $sort = $this->filter->getSort(); |
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| 253 | switch ($sort) { |
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| 254 | case 'ct': |
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| 255 | case 'wt': |
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| 256 | case 'cpu': |
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| 257 | case 'mu': |
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| 258 | View Code Duplication | case 'pmu': |
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| 259 | $aValue = $a['profile']['main()'][$sort]; |
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| 260 | $bValue = $b['profile']['main()'][$sort]; |
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| 261 | break; |
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| 262 | |||
| 263 | View Code Duplication | case 'time': |
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| 264 | $aValue = $a['meta']['request_ts']['sec']; |
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| 265 | $bValue = $b['meta']['request_ts']['sec']; |
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| 266 | break; |
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| 267 | |||
| 268 | case 'controller': |
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| 269 | case 'action': |
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| 270 | case 'application': |
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| 271 | case 'branch': |
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| 272 | View Code Duplication | case 'version': |
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| 273 | $aValue = $a['meta'][$sort]; |
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| 274 | $bValue = $b['meta'][$sort]; |
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| 275 | break; |
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| 276 | |||
| 277 | default: |
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| 278 | throw new InvalidArgumentException('Invalid sort mode'); |
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| 279 | break; |
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| 280 | } |
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| 281 | |||
| 282 | if ($aValue == $bValue) { |
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| 283 | return 0; |
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| 284 | } |
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| 285 | |||
| 286 | if (is_numeric($aValue) || is_numeric($bValue)) { |
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| 287 | if ($this->filter->getDirection() === 'desc') { |
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| 288 | if ($aValue < $bValue) { |
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| 289 | return 1; |
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| 290 | } |
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| 291 | return -1; |
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| 292 | } |
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| 293 | |||
| 294 | if ($aValue > $bValue) { |
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| 295 | return 1; |
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| 296 | } |
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| 297 | return -1; |
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| 298 | } |
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| 299 | |||
| 300 | if ($this->filter->getDirection() === 'desc') { |
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| 301 | return strnatcmp($aValue, $bValue); |
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| 302 | } |
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| 303 | return strnatcmp($bValue, $aValue); |
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| 304 | } |
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| 305 | |||
| 306 | /** |
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| 307 | * Generate meta profile name from profile file name. |
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| 308 | * |
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| 309 | * In most cases just add .meta extension |
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| 310 | * |
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| 311 | * @param $file |
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| 312 | * @return mixed |
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| 313 | */ |
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| 314 | protected function getMetafileNameFromProfileName($file) |
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| 315 | { |
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| 316 | $metaFile = $file.'.meta'; |
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| 317 | return $metaFile; |
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| 318 | } |
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| 319 | |||
| 320 | |||
| 321 | /** |
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| 322 | * @inheritDoc |
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| 323 | * @param $data |
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| 324 | */ |
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| 325 | public function insert(array $data) |
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| 334 | |||
| 335 | /** |
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| 336 | * @inheritDoc |
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| 337 | * @param $id |
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| 338 | * @param $data |
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| 339 | */ |
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| 340 | public function update($id, array $data) |
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| 341 | { |
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| 342 | file_put_contents($this->path.''.$this->prefix.$id.'.json', json_encode($data)); |
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| 343 | } |
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| 344 | |||
| 345 | /** |
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| 346 | * Load profile file from disk, prepare it and return parsed array |
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| 347 | * |
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| 348 | * @param $path |
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| 349 | * @param bool $meta |
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| 350 | * @return mixed |
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| 351 | */ |
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| 352 | protected function importFile($path, $meta = false) |
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| 353 | { |
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| 354 | if ($meta) { |
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| 355 | $serializer = $this->metaSerializer; |
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| 356 | } else { |
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| 357 | $serializer = $this->dataSerializer; |
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| 358 | } |
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| 359 | |||
| 360 | if (!file_exists($path) || !is_readable($path)) { |
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| 361 | return false; |
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| 362 | } |
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| 363 | |||
| 364 | switch ($serializer) { |
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| 365 | default: |
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| 366 | case 'json': |
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| 367 | return json_decode(file_get_contents($path), true); |
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| 368 | |||
| 369 | case 'serialize': |
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| 370 | if (PHP_MAJOR_VERSION > 7) { |
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| 371 | return unserialize(file_get_contents($path), false); |
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| 372 | } |
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| 373 | /** @noinspection UnserializeExploitsInspection */ |
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| 374 | return unserialize(file_get_contents($path)); |
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| 375 | |||
| 376 | case 'igbinary_serialize': |
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| 377 | case 'igbinary_unserialize': |
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| 378 | case 'igbinary': |
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| 379 | /** @noinspection PhpComposerExtensionStubsInspection */ |
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| 380 | return igbinary_unserialize(file_get_contents($path)); |
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| 381 | |||
| 382 | // this is a path to a file on disk |
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| 383 | case 'php': |
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| 384 | case 'var_export': |
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| 385 | /** @noinspection PhpIncludeInspection */ |
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| 386 | return include $path; |
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| 387 | } |
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| 388 | } |
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| 389 | |||
| 390 | /** |
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| 391 | * @inheritDoc |
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| 392 | * @return array |
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| 393 | */ |
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| 394 | public function getWatchedFunctions() |
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| 395 | { |
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| 396 | $ret = []; |
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| 397 | $files = glob($this->watchedFunctionsPathPrefix.'*.json'); |
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| 398 | foreach ($files as $file) { |
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| 399 | $ret[] = json_decode(file_get_contents($file)); |
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| 400 | } |
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| 401 | return $ret; |
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| 402 | } |
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| 403 | |||
| 404 | /** |
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| 405 | * @inheritDoc |
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| 406 | * @param $name |
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| 407 | * @return bool |
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| 408 | */ |
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| 409 | View Code Duplication | public function addWatchedFunction($name) |
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| 410 | { |
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| 411 | $name = trim($name); |
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| 412 | if (empty($name)) { |
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| 413 | return false; |
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| 414 | } |
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| 415 | $id = md5($name); |
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| 416 | $i = file_put_contents( |
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| 417 | $this->watchedFunctionsPathPrefix.$id.'.json', |
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| 418 | json_encode(['id'=>$id, 'name'=>$name]) |
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| 419 | ); |
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| 420 | return $i > 0; |
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| 421 | } |
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| 422 | |||
| 423 | /** |
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| 424 | * @inheritDoc |
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| 425 | * @param $id |
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| 426 | * @param $name |
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| 427 | * @return bool |
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| 428 | */ |
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| 429 | View Code Duplication | public function updateWatchedFunction($id, $name) |
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| 430 | { |
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| 431 | $name = trim($name); |
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| 432 | if (empty($name)) { |
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| 433 | return false; |
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| 434 | } |
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| 435 | |||
| 436 | $i = file_put_contents( |
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| 437 | $this->watchedFunctionsPathPrefix.$id.'.json', |
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| 438 | json_encode(['id'=>$id, 'name'=>trim($name)]) |
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| 439 | ); |
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| 440 | return $i > 0; |
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| 441 | } |
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| 442 | |||
| 443 | /** |
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| 444 | * @inheritDoc |
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| 445 | * @param $id |
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| 446 | */ |
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| 447 | public function removeWatchedFunction($id) |
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| 448 | { |
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| 449 | if (file_exists($this->watchedFunctionsPathPrefix.$id.'.json')) { |
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| 450 | unlink($this->watchedFunctionsPathPrefix.$id.'.json'); |
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| 451 | } |
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| 452 | } |
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| 453 | |||
| 454 | /** |
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| 455 | * Parse filename and try to get request time from filename |
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| 456 | * |
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| 457 | * @param $fileName |
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| 458 | * @return bool|DateTime |
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| 459 | */ |
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| 460 | public function getRequestTimeFromFilename($fileName) |
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| 472 | } |
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| 473 |
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: