tnhfw /
tnh-fw
| Total Complexity | 42 |
| Total Lines | 382 |
| Duplicated Lines | 0 % |
| Changes | 3 | ||
| Bugs | 1 | Features | 0 |
Complex classes like Log 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.
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 Log, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 31 | class Log { |
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| 32 | |||
| 33 | /** |
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| 34 | * The defined constants for Log level |
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| 35 | */ |
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| 36 | const NONE = 99999999; |
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| 37 | const EMERGENCY = 800; |
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| 38 | const ALERT = 700; |
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| 39 | const CRITICAL = 600; |
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| 40 | const ERROR = 500; |
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| 41 | const WARNING = 400; |
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| 42 | const NOTICE = 300; |
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| 43 | const INFO = 200; |
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| 44 | const DEBUG = 100; |
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| 45 | |||
| 46 | /** |
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| 47 | * The logger name |
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| 48 | * @var string |
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| 49 | */ |
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| 50 | private $logger = 'ROOT_LOGGER'; |
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| 51 | |||
| 52 | /** |
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| 53 | * List of valid log level to be checked for the configuration |
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| 54 | * @var array |
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| 55 | */ |
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| 56 | private static $validConfigLevel = array('off', 'none', 'emergency', 'alert', 'critical', 'error', 'warning', 'notice', 'info', 'debug'); |
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| 57 | |||
| 58 | /** |
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| 59 | * Create new Log instance |
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| 60 | */ |
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| 61 | public function __construct() { |
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| 62 | } |
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| 63 | |||
| 64 | /** |
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| 65 | * Set the logger to identify each message in the log |
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| 66 | * @param string $logger the logger name |
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| 67 | */ |
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| 68 | public function setLogger($logger) { |
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| 69 | $this->logger = $logger; |
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| 70 | } |
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| 71 | |||
| 72 | /** |
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| 73 | * get the logger name |
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| 74 | * |
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| 75 | * @return string |
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| 76 | */ |
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| 77 | public function getLogger() { |
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| 78 | return $this->logger; |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * System is unusable. |
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| 83 | * |
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| 84 | * @see Log::log for more detail |
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| 85 | * @param string $message the log message to save |
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| 86 | */ |
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| 87 | public function emergency($message) { |
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| 88 | $this->log(self::EMERGENCY, $message); |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * Action must be taken immediately. |
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| 93 | * |
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| 94 | * Example: Entire website down, database unavailable, etc. This should |
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| 95 | * trigger the SMS alerts and wake you up. |
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| 96 | * |
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| 97 | * @see Log::log for more detail |
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| 98 | * @param string $message the log message to save |
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| 99 | */ |
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| 100 | public function alert($message) { |
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| 101 | $this->log(self::ALERT, $message); |
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| 102 | } |
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| 103 | |||
| 104 | /** |
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| 105 | * Critical conditions. |
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| 106 | * |
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| 107 | * Example: Application component unavailable, unexpected exception. |
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| 108 | * |
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| 109 | * @see Log::log for more detail |
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| 110 | * @param string $message the log message to save |
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| 111 | */ |
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| 112 | public function critical($message) { |
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| 113 | $this->log(self::CRITICAL, $message); |
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| 114 | } |
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| 115 | |||
| 116 | /** |
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| 117 | * Runtime errors that do not require immediate action but should typically |
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| 118 | * be logged and monitored. |
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| 119 | * |
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| 120 | * @see Log::log for more detail |
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| 121 | * @param string $message the log message to save |
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| 122 | */ |
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| 123 | public function error($message) { |
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| 124 | $this->log(self::ERROR, $message); |
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| 125 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * Exceptional occurrences that are not errors. |
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| 129 | * |
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| 130 | * Example: Use of deprecated APIs, poor use of an API, undesirable things |
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| 131 | * that are not necessarily wrong. |
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| 132 | * |
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| 133 | * @see Log::log for more detail |
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| 134 | * @param string $message the log message to save |
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| 135 | */ |
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| 136 | public function warning($message) { |
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| 137 | $this->log(self::WARNING, $message); |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * Normal but significant events. |
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| 142 | * |
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| 143 | * @see Log::log for more detail |
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| 144 | * @param string $message the log message to save |
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| 145 | */ |
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| 146 | public function notice($message) { |
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| 147 | $this->log(self::NOTICE, $message); |
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| 148 | } |
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| 149 | |||
| 150 | /** |
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| 151 | * Interesting events. |
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| 152 | * |
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| 153 | * Example: User logs in, SQL logs. |
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| 154 | * |
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| 155 | * @see Log::log for more detail |
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| 156 | * @param string $message the log message to save |
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| 157 | */ |
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| 158 | public function info($message) { |
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| 159 | $this->log(self::INFO, $message); |
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| 160 | } |
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| 161 | |||
| 162 | /** |
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| 163 | * Detailed debug information. |
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| 164 | * |
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| 165 | * @see Log::log for more detail |
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| 166 | * @param string $message the log message to save |
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| 167 | */ |
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| 168 | public function debug($message) { |
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| 169 | $this->log(self::DEBUG, $message); |
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| 170 | } |
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| 171 | |||
| 172 | /** |
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| 173 | * Logs with an arbitrary level. |
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| 174 | * |
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| 175 | * @param integer|string $level the log level in integer or string format, |
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| 176 | * if is string will convert into integer. |
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| 177 | * @param string $message the log message to be saved |
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| 178 | */ |
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| 179 | public function log($level, $message) { |
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| 180 | $configLogLevel = get_config('log_level'); |
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| 181 | if (!$configLogLevel) { |
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| 182 | //so means no need log just stop here |
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| 183 | return; |
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| 184 | } |
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| 185 | //check config log level |
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| 186 | if (!self::isValidConfigLevel($configLogLevel)) { |
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| 187 | //NOTE: here need put the show_error() "logging" to false |
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| 188 | //to prevent self function loop call |
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| 189 | show_error('Invalid config log level [' . $configLogLevel . '], ' |
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| 190 | . 'the value must be one of the following: ' |
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| 191 | . implode(', ', array_map('strtoupper', self::$validConfigLevel)) |
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| 192 | , 'Log Config Error', |
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| 193 | $logging = false |
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| 194 | ); |
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| 195 | return; |
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| 196 | } |
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| 197 | |||
| 198 | //check if config log_logger_name and current log can save log data |
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| 199 | if (!$this->currentLoggerNameCanSaveLog()) { |
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| 200 | return; |
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| 201 | } |
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| 202 | |||
| 203 | //if $level is not an integer |
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| 204 | if (!is_numeric($level)) { |
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| 205 | $level = self::getLevelValue($level); |
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| 206 | } |
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| 207 | |||
| 208 | //check if can logging regarding the log level config |
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| 209 | //or custom logger level |
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| 210 | if (!$this->levelCanSaveLog($level)) { |
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|
Bug
introduced
by
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| 211 | return; |
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| 212 | } |
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| 213 | |||
| 214 | //check log file and directory |
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| 215 | $path = $this->checkAndSetLogFileDirectory(); |
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| 216 | //save the log data |
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| 217 | $this->saveLogData($path, $level, $message); |
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| 218 | } |
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| 219 | |||
| 220 | /** |
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| 221 | * Save the log data into file |
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| 222 | * @param string $path the path of the log file |
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| 223 | * @param integer $level the log level in integer format. |
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| 224 | * @param string $message the log message to save |
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| 225 | * @return void |
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| 226 | */ |
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| 227 | protected function saveLogData($path, $level, $message) { |
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| 228 | //may be at this time helper user_agent not yet included |
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| 229 | require_once CORE_FUNCTIONS_PATH . 'function_user_agent.php'; |
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| 230 | |||
| 231 | ///////////////////// date ////////////// |
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| 232 | $timestampWithMicro = microtime(true); |
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| 233 | $microtime = sprintf('%06d', ($timestampWithMicro - floor($timestampWithMicro)) * 1000000); |
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| 234 | $dateTime = new DateTime(date('Y-m-d H:i:s.' . $microtime, $timestampWithMicro)); |
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| 235 | $logDate = $dateTime->format('Y-m-d H:i:s.u'); |
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| 236 | //ip |
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| 237 | $ip = get_ip(); |
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| 238 | |||
| 239 | //level name |
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| 240 | $levelName = self::getLevelName($level); |
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| 241 | |||
| 242 | //debug info |
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| 243 | $fileInfo = $this->getLogDebugBacktraceInfo(); |
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| 244 | |||
| 245 | $str = $logDate . ' [' . str_pad($levelName, 9 /*emergency len*/) . '] ' |
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| 246 | . ' [' . str_pad($ip, 15) . '] ' . $this->logger . ': ' |
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| 247 | . $message . ' ' . '[' . $fileInfo['file'] . ':' . $fileInfo['line'] . ']' . "\n"; |
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| 248 | $fp = fopen($path, 'a+'); |
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| 249 | if (is_resource($fp)) { |
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| 250 | flock($fp, LOCK_EX); // exclusive lock, will get released when the file is closed |
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| 251 | fwrite($fp, $str); |
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| 252 | fclose($fp); |
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| 253 | } |
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| 254 | } |
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| 255 | |||
| 256 | /** |
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| 257 | * Check if the given level can save log data |
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| 258 | * @param integer $level the current level value to save the log data |
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| 259 | * @return boolean |
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| 260 | */ |
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| 261 | protected function levelCanSaveLog($level) { |
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| 262 | $result = true; |
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| 263 | $configLogLevel = get_config('log_level'); |
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| 264 | //check if can save log regarding the log level configuration |
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| 265 | $configLevel = self::getLevelValue($configLogLevel); |
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| 266 | if ($configLevel > $level) { |
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| 267 | //can't log |
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| 268 | $result = false; |
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| 269 | } |
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| 270 | //If result is false so means current log level can not save log data |
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| 271 | //using the config level |
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| 272 | if ($result === false) { |
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| 273 | //Check for logger rule overwritting |
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| 274 | $configLoggersNameLevel = get_config('log_logger_name_level', array()); |
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| 275 | foreach ($configLoggersNameLevel as $loggerName => $loggerLevel) { |
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| 276 | if (preg_match('#' . $loggerName . '#', $this->logger)) { |
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| 277 | $loggerLevelValue = self::getLevelValue($loggerLevel); |
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| 278 | if ($loggerLevelValue <= $level) { |
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| 279 | $result = true; |
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| 280 | } |
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| 281 | break; |
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| 282 | } |
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| 283 | } |
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| 284 | } |
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| 285 | return $result; |
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| 286 | } |
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| 287 | |||
| 288 | /** |
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| 289 | * Check if the current logger can save log data regarding the configuration |
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| 290 | * of logger filter |
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| 291 | * @return boolean |
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| 292 | */ |
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| 293 | protected function currentLoggerNameCanSaveLog() { |
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| 294 | $configLoggersName = get_config('log_logger_name', array()); |
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| 295 | if (!empty($configLoggersName)) { |
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| 296 | if (!in_array($this->logger, $configLoggersName)) { |
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| 297 | return false; |
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| 298 | } |
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| 299 | } |
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| 300 | return true; |
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| 301 | } |
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| 302 | |||
| 303 | /** |
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| 304 | * Return the debug backtrace information |
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| 305 | * @return array the line number and file path |
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| 306 | */ |
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| 307 | protected function getLogDebugBacktraceInfo() { |
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| 308 | $dtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS); |
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| 309 | $i = 0; |
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| 310 | while ($dtrace[$i]['file'] == __FILE__ ) { |
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| 311 | $i++; |
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| 312 | } |
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| 313 | $fileInfo = $dtrace[$i]; |
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| 314 | |||
| 315 | $line = -1; |
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| 316 | $file = ''; |
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| 317 | |||
| 318 | if (isset($fileInfo['file'])) { |
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| 319 | $file = $fileInfo['file']; |
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| 320 | } |
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| 321 | if (isset($fileInfo['line'])) { |
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| 322 | $line = $fileInfo['line']; |
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| 323 | } |
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| 324 | return array( |
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| 325 | 'file' => $file, |
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| 326 | 'line' => $line |
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| 327 | ); |
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| 328 | } |
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| 329 | |||
| 330 | /** |
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| 331 | * Check the file and directory |
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| 332 | * @return string|null the log file path |
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| 333 | */ |
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| 334 | protected function checkAndSetLogFileDirectory() { |
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| 352 | } |
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| 353 | |||
| 354 | /** |
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| 355 | * Check if the given log level is valid |
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| 356 | * |
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| 357 | * @param string $level the log level |
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| 358 | * |
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| 359 | * @return boolean true if the given log level is valid, false if not |
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| 360 | */ |
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| 361 | protected static function isValidConfigLevel($level) { |
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| 362 | $level = strtolower($level); |
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| 363 | return in_array($level, self::$validConfigLevel); |
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| 364 | } |
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| 365 | |||
| 366 | /** |
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| 367 | * Get the log level number for the given level string |
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| 368 | * @param string $level the log level in string format |
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| 369 | * |
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| 370 | * @return int the log level in integer format using the predefined constants |
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| 371 | */ |
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| 372 | protected static function getLevelValue($level) { |
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| 390 | } |
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| 391 | |||
| 392 | /** |
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| 393 | * Get the log level string for the given log level integer |
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| 394 | * @param integer $level the log level in integer format |
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| 395 | * @return string the log level in string format |
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| 396 | */ |
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| 397 | protected static function getLevelName($level) { |
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| 413 | } |
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| 414 | |||
| 415 | } |
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| 416 |
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