smrealms /
smr
We could not synchronize checks via GitHub's checks API since Scrutinizer's GitHub App is not installed for this repository.
| Total Complexity | 70 |
| Total Lines | 329 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 0 | Features | 0 |
Complex classes like MySqlDatabase 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 MySqlDatabase, and based on these observations, apply Extract Interface, too.
| 1 | <?php declare(strict_types=1); |
||
| 6 | class MySqlDatabase { |
||
| 7 | private mysqli $dbConn; |
||
| 8 | private MySqlProperties $mysqlProperties; |
||
| 9 | private string $selectedDbName; |
||
| 10 | /** |
||
| 11 | * @var bool | mysqli_result |
||
| 12 | */ |
||
| 13 | private $dbResult = null; |
||
| 14 | private ?array $dbRecord = null; |
||
| 15 | |||
| 16 | public static function getInstance(): MySqlDatabase { |
||
| 17 | return self::ensureConnected(DiContainer::get(self::class)); |
||
| 18 | } |
||
| 19 | |||
| 20 | public static function getNewInstance(): MySqlDatabase { |
||
| 22 | } |
||
| 23 | |||
| 24 | /** |
||
| 25 | * Verifies that the MySqlDatabase instance has a valid $dbConn instance, |
||
| 26 | * and rewires the DI container to use freshly instantiated instances in the event |
||
| 27 | * of disconnect from the database. |
||
| 28 | * @param MySqlDatabase $mysqlDatabase |
||
| 29 | * @return MySqlDatabase |
||
| 30 | * @throws \DI\DependencyException |
||
| 31 | * @throws \DI\NotFoundException |
||
| 32 | */ |
||
| 33 | private static function ensureConnected(MySqlDatabase $mysqlDatabase): MySqlDatabase { |
||
| 34 | if (!isset($mysqlDatabase->dbConn)) { |
||
| 35 | self::reconnectMysql(); |
||
| 36 | DiContainer::getContainer()->set(MySqlDatabase::class, self::getNewInstance()); |
||
| 37 | $mysqlDatabase = self::getInstance(); |
||
| 38 | } |
||
| 39 | return $mysqlDatabase; |
||
| 40 | } |
||
| 41 | |||
| 42 | /** |
||
| 43 | * Reconnects to the MySQL database, and replaces the managed mysqli instance |
||
| 44 | * in the dependency injection container for future retrievals. |
||
| 45 | * @throws \DI\DependencyException |
||
| 46 | * @throws \DI\NotFoundException |
||
| 47 | */ |
||
| 48 | private static function reconnectMysql() { |
||
| 51 | } |
||
| 52 | |||
| 53 | public static function mysqliFactory(MySqlProperties $mysqlProperties): mysqli { |
||
| 54 | if (!mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT)) { |
||
| 55 | throw new RuntimeException('Failed to enable mysqli error reporting'); |
||
| 56 | } |
||
| 57 | return new mysqli( |
||
| 58 | $mysqlProperties->getHost(), |
||
| 59 | $mysqlProperties->getUser(), |
||
| 60 | $mysqlProperties->getPassword(), |
||
| 61 | $mysqlProperties->getDatabaseName()); |
||
| 62 | } |
||
| 63 | |||
| 64 | /** |
||
| 65 | * MySqlDatabase constructor. |
||
| 66 | * Not intended to be constructed by hand. If you need an instance of MySqlDatabase, |
||
| 67 | * use MySqlDatabase::getInstance(); |
||
| 68 | * @param mysqli $dbConn The mysqli instance |
||
| 69 | * @param MySqlProperties $mysqlProperties The properties object that was used to construct the mysqli instance |
||
| 70 | */ |
||
| 71 | public function __construct(mysqli $dbConn, MySqlProperties $mysqlProperties) { |
||
| 72 | $charset = $dbConn->character_set_name(); |
||
| 73 | if ($charset != 'utf8') { |
||
| 74 | $this->error('Unexpected charset: ' . $charset); |
||
| 75 | } |
||
| 76 | $this->dbConn = $dbConn; |
||
| 77 | $this->mysqlProperties = $mysqlProperties; |
||
| 78 | $this->selectedDbName = $mysqlProperties->getDatabaseName(); |
||
| 79 | } |
||
| 80 | |||
| 81 | /** |
||
| 82 | * This method will switch the connection to the specified database. |
||
| 83 | * Useful for switching back and forth between historical, and live databases. |
||
| 84 | * |
||
| 85 | * @param string $databaseName The name of the database to switch to |
||
| 86 | */ |
||
| 87 | public function switchDatabases(string $databaseName) { |
||
| 90 | } |
||
| 91 | |||
| 92 | /** |
||
| 93 | * Switch back to the configured live database |
||
| 94 | */ |
||
| 95 | public function switchDatabaseToLive() { |
||
| 96 | $this->switchDatabases($this->mysqlProperties->getDatabaseName()); |
||
| 97 | } |
||
| 98 | |||
| 99 | /** |
||
| 100 | * Returns the size of the selected database in bytes. |
||
| 101 | */ |
||
| 102 | public function getDbBytes() { |
||
| 106 | } |
||
| 107 | |||
| 108 | /** |
||
| 109 | * This should not be needed except perhaps by persistent connections |
||
| 110 | * |
||
| 111 | * Closes the connection to the MySQL database. After closing this connection, |
||
| 112 | * this MySqlDatabase instance is no longer valid, and will subsequently throw exceptions when |
||
| 113 | * attempting to perform database operations. |
||
| 114 | * |
||
| 115 | * You must call MySqlDatabase::getInstance() again to retrieve a valid instance that |
||
| 116 | * is reconnected to the database. |
||
| 117 | */ |
||
| 118 | public function close() { |
||
| 119 | if ($this->dbConn) { |
||
| 120 | $this->dbConn->close(); |
||
| 121 | unset($this->dbConn); |
||
| 122 | } |
||
| 123 | } |
||
| 124 | |||
| 125 | public function query($query) { |
||
| 126 | $this->dbResult = $this->dbConn->query($query); |
||
| 127 | } |
||
| 128 | |||
| 129 | /** |
||
| 130 | * Use to populate this instance with the next record of the active query. |
||
| 131 | */ |
||
| 132 | public function nextRecord(): bool { |
||
| 133 | if (!$this->dbResult) { |
||
| 134 | $this->error('No resource to get record from.'); |
||
| 135 | } |
||
| 136 | if ($this->dbRecord = $this->dbResult->fetch_assoc()) { |
||
| 137 | return true; |
||
| 138 | } |
||
| 139 | return false; |
||
| 140 | } |
||
| 141 | |||
| 142 | /** |
||
| 143 | * Use instead of nextRecord when exactly one record is expected from the |
||
| 144 | * active query. |
||
| 145 | */ |
||
| 146 | public function requireRecord(): void { |
||
| 149 | } |
||
| 150 | } |
||
| 151 | |||
| 152 | public function hasField($name) { |
||
| 153 | return isset($this->dbRecord[$name]); |
||
| 154 | } |
||
| 155 | |||
| 156 | public function getField($name) { |
||
| 157 | return $this->dbRecord[$name]; |
||
| 158 | } |
||
| 159 | |||
| 160 | public function getBoolean($name) { |
||
| 166 | // $this->error('Field is not a boolean'); |
||
| 167 | } |
||
| 168 | |||
| 169 | public function getInt($name) { |
||
| 170 | return (int)$this->dbRecord[$name]; |
||
| 171 | } |
||
| 172 | |||
| 173 | public function getFloat($name) { |
||
| 174 | return (float)$this->dbRecord[$name]; |
||
| 175 | } |
||
| 176 | |||
| 177 | // WARNING: In the past, Microtime was stored in the database incorrectly. |
||
| 178 | // For backwards compatibility, set $pad_msec=true to try to guess at the |
||
| 179 | // intended value. This is not safe if the Microtime length is wrong for an |
||
| 180 | // unrelated reason! |
||
| 181 | public function getMicrotime($name, $pad_msec = false) { |
||
| 182 | $data = $this->dbRecord[$name]; |
||
| 183 | $sec = substr($data, 0, 10); |
||
| 184 | $msec = substr($data, 10); |
||
| 185 | if (strlen($msec) != 6) { |
||
| 186 | if ($pad_msec) { |
||
| 187 | $msec = str_pad($msec, 6, '0', STR_PAD_LEFT); |
||
| 188 | } else { |
||
| 189 | $this->error('Field is not an escaped microtime (' . $data . ')'); |
||
| 190 | } |
||
| 191 | } |
||
| 192 | return "$sec.$msec"; |
||
| 193 | } |
||
| 194 | |||
| 195 | public function getObject($name, $compressed = false) { |
||
| 196 | $object = $this->getField($name); |
||
| 197 | if ($compressed === true) { |
||
| 198 | $object = gzuncompress($object); |
||
| 199 | } |
||
| 200 | return unserialize($object); |
||
| 201 | } |
||
| 202 | |||
| 203 | public function getRow() { |
||
| 204 | return $this->dbRecord; |
||
| 205 | } |
||
| 206 | |||
| 207 | public function lockTable($table) { |
||
| 208 | $this->dbConn->query('LOCK TABLES ' . $table . ' WRITE'); |
||
| 209 | } |
||
| 210 | |||
| 211 | public function unlock() { |
||
| 212 | $this->dbConn->query('UNLOCK TABLES'); |
||
| 213 | } |
||
| 214 | |||
| 215 | public function getNumRows() { |
||
| 216 | return $this->dbResult->num_rows; |
||
| 217 | } |
||
| 218 | |||
| 219 | public function getChangedRows() { |
||
| 220 | return $this->dbConn->affected_rows; |
||
| 221 | } |
||
| 222 | |||
| 223 | public function getInsertID() { |
||
| 224 | return $this->dbConn->insert_id; |
||
| 225 | } |
||
| 226 | |||
| 227 | protected function error($err) { |
||
| 228 | throw new RuntimeException($err); |
||
| 229 | } |
||
| 230 | |||
| 231 | public function escape($escape, $autoQuotes = true, $quotes = true) { |
||
| 257 | } |
||
| 258 | } |
||
| 259 | } |
||
| 260 | |||
| 261 | public function escapeString($string, $quotes = true, $nullable = false) { |
||
| 262 | if ($nullable === true && ($string === null || $string === '')) { |
||
| 263 | return 'NULL'; |
||
| 264 | } |
||
| 265 | if ($string === true) { |
||
| 266 | $string = 'TRUE'; |
||
| 267 | } elseif ($string === false) { |
||
| 268 | $string = 'FALSE'; |
||
| 269 | } |
||
| 270 | if (is_array($string)) { |
||
| 271 | $escapedString = ''; |
||
| 272 | foreach ($string as $value) { |
||
| 273 | $escapedString .= $this->escapeString($value, $quotes) . ','; |
||
| 274 | } |
||
| 275 | return substr($escapedString, 0, -1); |
||
| 276 | } |
||
| 277 | if ($quotes) { |
||
| 278 | return '\'' . $this->dbConn->real_escape_string($string) . '\''; |
||
| 279 | } |
||
| 280 | return $this->dbConn->real_escape_string($string); |
||
| 281 | } |
||
| 282 | |||
| 283 | public function escapeBinary($binary) { |
||
| 284 | return '0x' . bin2hex($binary); |
||
| 285 | } |
||
| 286 | |||
| 287 | public function escapeArray(array $array, $autoQuotes = true, $quotes = true, $implodeString = ',', $escapeIndividually = true) { |
||
| 288 | $string = ''; |
||
| 289 | if ($escapeIndividually) { |
||
| 290 | foreach ($array as $value) { |
||
| 291 | if (is_array($value)) { |
||
| 292 | $string .= $this->escapeArray($value, $autoQuotes, $quotes, $implodeString, $escapeIndividually) . $implodeString; |
||
| 293 | } else { |
||
| 294 | $string .= $this->escape($value, $autoQuotes, $quotes) . $implodeString; |
||
| 295 | } |
||
| 296 | } |
||
| 297 | $string = substr($string, 0, -1); |
||
| 298 | } else { |
||
| 299 | $string = $this->escape(implode($implodeString, $array), $autoQuotes, $quotes); |
||
| 300 | } |
||
| 301 | return $string; |
||
| 302 | } |
||
| 303 | |||
| 304 | public function escapeNumber($num) { |
||
| 305 | // Numbers need not be quoted in MySQL queries, so if we know $num is |
||
| 306 | // numeric, we can simply return its value (no quoting or escaping). |
||
| 307 | if (is_numeric($num)) { |
||
| 308 | return $num; |
||
| 309 | } else { |
||
| 310 | $this->error('Not a number! (' . $num . ')'); |
||
| 311 | } |
||
| 312 | } |
||
| 313 | |||
| 314 | public function escapeMicrotime($microtime, $quotes = false) { |
||
| 315 | $sec_str = sprintf('%010d', $microtime); |
||
| 316 | $usec_str = sprintf('%06d', fmod($microtime, 1) * 1E6); |
||
| 317 | return $this->escapeString($sec_str . $usec_str, $quotes); |
||
| 318 | } |
||
| 319 | |||
| 320 | public function escapeBoolean($bool, $quotes = true) { |
||
| 327 | } |
||
| 328 | } |
||
| 329 | |||
| 330 | public function escapeObject($object, $compress = false, $quotes = true, $nullable = false) { |
||
| 335 | } |
||
| 336 | } |
||
| 337 |
