Complex classes like DebugBar 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 DebugBar, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 6 | use DebugBar\DebugBar as BaseDebugBar; |
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| 7 | use DebugBar\DataCollector\MemoryCollector; |
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| 8 | use DebugBar\DataCollector\PDO\PDOCollector; |
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| 9 | use DebugBar\DataCollector\PDO\TraceablePDO; |
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| 10 | use DebugBar\DataCollector\PhpInfoCollector; |
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| 11 | use DebugBar\Storage\FileStorage; |
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| 12 | use Exception; |
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| 13 | use LeKoala\DebugBar\Collector\DatabaseCollector; |
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| 14 | use LeKoala\DebugBar\Collector\SilverStripeCollector; |
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| 15 | use LeKoala\DebugBar\Collector\TimeDataCollector; |
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| 16 | use LeKoala\DebugBar\Extension\ControllerExtension; |
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| 17 | use LeKoala\DebugBar\LogWriter; |
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| 18 | use LeKoala\DebugBar\Proxy\DatabaseProxy; |
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| 19 | use Psr\Log\LoggerInterface; |
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| 20 | use ReflectionObject; |
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| 21 | use SilverStripe\Admin\LeftAndMain; |
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| 22 | use SilverStripe\Control\Controller as BaseController; |
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| 23 | use SilverStripe\Control\Director; |
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| 24 | use SilverStripe\Core\Config\Configurable; |
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| 25 | use SilverStripe\Core\Injector\Injectable; |
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| 26 | use SilverStripe\Core\Injector\Injector; |
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| 27 | use SilverStripe\ORM\Connect\PDOConnector; |
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| 28 | use SilverStripe\ORM\DB; |
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| 29 | use SilverStripe\View\Requirements; |
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| 30 | |||
| 31 | /** |
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| 32 | * A simple helper |
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| 33 | */ |
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| 34 | class DebugBar |
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| 35 | { |
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| 36 | use Configurable; |
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| 37 | use Injectable; |
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| 38 | |||
| 39 | /** |
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| 40 | * @var DebugBar\DebugBar |
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| 41 | */ |
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| 42 | protected static $debugbar = null; |
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| 43 | |||
| 44 | /** |
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| 45 | * @var bool |
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| 46 | */ |
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| 47 | public static $bufferingEnabled = false; |
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| 48 | |||
| 49 | /** |
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| 50 | * @var DebugBar\JavascriptRenderer |
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| 51 | */ |
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| 52 | protected static $renderer = null; |
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| 53 | |||
| 54 | /** |
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| 55 | * @var bool |
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| 56 | */ |
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| 57 | protected static $showQueries = false; |
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| 58 | |||
| 59 | /** |
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| 60 | * Get the Debug Bar instance |
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| 61 | * @return \DebugBar\StandardDebugBar |
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| 62 | * @throws Exception |
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| 63 | * @global array $databaseConfig |
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| 64 | */ |
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| 65 | public static function getDebugBar() |
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| 66 | { |
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| 67 | if (self::$debugbar !== null) { |
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| 68 | return self::$debugbar; |
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| 69 | } |
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| 70 | |||
| 71 | if (!Director::isDev() || self::isDisabled() || self::vendorNotInstalled() || |
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| 72 | self::notLocalIp() || Director::is_cli() || self::isDevUrl() || |
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| 73 | (self::isAdminUrl() && !self::config()->enabled_in_admin) |
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| 74 | ) { |
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| 75 | self::$debugbar = false; // no need to check again |
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| 76 | return; |
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| 77 | } |
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| 78 | |||
| 79 | self::initDebugBar(); |
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| 80 | |||
| 81 | if (!self::$debugbar) { |
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| 82 | throw new Exception("Failed to initialize the DebugBar"); |
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| 83 | } |
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| 84 | |||
| 85 | return self::$debugbar; |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * Init the debugbar instance |
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| 90 | * |
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| 91 | * @global array $databaseConfig |
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| 92 | * @return DebugBar\StandardDebugBar |
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| 93 | */ |
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| 94 | public static function initDebugBar() |
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| 95 | { |
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| 96 | // Prevent multiple inits |
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| 97 | if (self::$debugbar) { |
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| 98 | return self::$debugbar; |
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| 99 | } |
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| 100 | |||
| 101 | // Add the controller extension programmaticaly because it might not be added properly through yml |
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| 102 | Controller::add_extension(ControllerExtension::class); |
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| 103 | |||
| 104 | self::$debugbar = $debugbar = new BaseDebugBar; |
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| 105 | |||
| 106 | if (isset($_REQUEST['showqueries'])) { |
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| 107 | self::setShowQueries(true); |
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| 108 | echo "The queries above have been run before we started DebugBar"; |
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| 109 | echo '<hr>'; |
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| 110 | unset($_REQUEST['showqueries']); |
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| 111 | } |
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| 112 | |||
| 113 | $debugbar->addCollector(new PhpInfoCollector); |
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| 114 | $debugbar->addCollector(new TimeDataCollector); |
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| 115 | $debugbar->addCollector(new MemoryCollector); |
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| 116 | |||
| 117 | if (!DB::get_conn()) { |
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| 118 | global $databaseConfig; |
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| 119 | if ($databaseConfig) { |
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| 120 | DB::connect($databaseConfig); |
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| 121 | } |
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| 122 | } |
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| 123 | |||
| 124 | $connector = DB::get_connector(); |
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| 125 | if (!self::config()->force_proxy && $connector instanceof PDOConnector) { |
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| 126 | // Use a little bit of magic to replace the pdo instance |
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| 127 | $refObject = new ReflectionObject($connector); |
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| 128 | $refProperty = $refObject->getProperty('pdoConnection'); |
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| 129 | $refProperty->setAccessible(true); |
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| 130 | $traceablePdo = new TraceablePDO($refProperty->getValue($connector)); |
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| 131 | $refProperty->setValue($connector, $traceablePdo); |
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| 132 | |||
| 133 | $debugbar->addCollector(new PDOCollector($traceablePdo)); |
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| 134 | } else { |
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| 135 | DB::set_conn($db = new DatabaseProxy(DB::get_conn())); |
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| 136 | $db->setShowQueries(self::getShowQueries()); |
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| 137 | $debugbar->addCollector(new DatabaseCollector); |
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| 138 | } |
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| 139 | |||
| 140 | // Add message collector last so other collectors can send messages to the console using it |
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| 141 | $logger = Injector::inst()->get(LoggerInterface::class); |
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| 142 | $debugbar->addCollector(new MonologCollector($logger)); |
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| 143 | |||
| 144 | // Add some SilverStripe specific infos |
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| 145 | $debugbar->addCollector(new SilverStripeCollector); |
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| 146 | |||
| 147 | if (self::config()->enable_storage) { |
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| 148 | $debugbar->setStorage(new FileStorage(TEMP_FOLDER . '/debugbar')); |
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| 149 | } |
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| 150 | |||
| 151 | // Since we buffer everything, why not enable all dev options ? |
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| 152 | if (self::config()->auto_debug) { |
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| 153 | $_REQUEST['debug'] = true; |
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| 154 | $_REQUEST['debug_request'] = true; |
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| 155 | } |
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| 156 | |||
| 157 | if (isset($_REQUEST['debug']) || isset($_REQUEST['debug_request'])) { |
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| 158 | self::$bufferingEnabled = true; |
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| 159 | ob_start(); // We buffer everything until we have called an action |
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| 160 | } |
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| 161 | |||
| 162 | return $debugbar; |
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| 163 | } |
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| 164 | |||
| 165 | public static function clearDebugBar() |
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| 169 | |||
| 170 | public static function getShowQueries() |
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| 174 | |||
| 175 | public static function setShowQueries($showQueries) |
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| 179 | |||
| 180 | public static function includeRequirements() |
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| 235 | |||
| 236 | public static function renderDebugBar() |
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| 255 | |||
| 256 | /** |
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| 257 | * Determine why DebugBar is disabled |
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| 258 | * |
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| 259 | * @return string |
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| 260 | */ |
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| 261 | public static function whyDisabled() |
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| 286 | |||
| 287 | public static function vendorNotInstalled() |
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| 291 | |||
| 292 | public static function notLocalIp() |
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| 302 | |||
| 303 | public static function isDisabled() |
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| 304 | { |
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| 305 | if ((defined('DEBUGBAR_DISABLE') && DEBUGBAR_DISABLE) || static::config()->disabled) { |
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| 306 | return true; |
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| 307 | } |
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| 308 | return false; |
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| 309 | } |
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| 310 | |||
| 311 | public static function isDevUrl() |
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| 315 | |||
| 316 | public static function isAdminUrl() |
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| 320 | |||
| 321 | public static function isAdminController() |
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| 328 | |||
| 329 | /** |
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| 330 | * Avoid triggering data collection for open handler |
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| 331 | * |
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| 332 | * @return boolean |
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| 333 | */ |
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| 334 | public static function isDebugBarRequest() |
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| 341 | |||
| 342 | /** |
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| 343 | * Get request url |
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| 344 | * |
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| 370 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..