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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (https://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@noladev.com> |
| 7 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
| 8 | * @license https://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Cache\Adapter; |
| 15 | |
| 16 | use Pop\Db\Adapter; |
| 17 | |
| 18 | /** |
| 19 | * Database cache adapter class |
| 20 | * |
| 21 | * @category Pop |
| 22 | * @package Pop\Cache |
| 23 | * @author Nick Sagona, III <dev@noladev.com> |
| 24 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
| 25 | * @license https://www.popphp.org/license New BSD License |
| 26 | * @version 4.0.2 |
| 27 | */ |
| 28 | class Database extends AbstractAdapter |
| 29 | { |
| 30 | |
| 31 | /** |
| 32 | * Database adapter |
| 33 | * @var ?Adapter\AbstractAdapter |
| 34 | */ |
| 35 | protected ?Adapter\AbstractAdapter $db = null; |
| 36 | |
| 37 | /** |
| 38 | * Cache db table |
| 39 | * @var string |
| 40 | */ |
| 41 | protected string $table = 'pop_cache'; |
| 42 | |
| 43 | /** |
| 44 | * Constructor |
| 45 | * |
| 46 | * Instantiate the DB writer object |
| 47 | * |
| 48 | * The DB table requires the following fields at a minimum: |
| 49 | |
| 50 | * id INT |
| 51 | * key VARCHAR |
| 52 | * start INT |
| 53 | * ttl INT |
| 54 | * value TEXT, VARCHAR, etc. |
| 55 | * |
| 56 | * @param Adapter\AbstractAdapter $db |
| 57 | * @param int $ttl |
| 58 | * @param string $table |
| 59 | */ |
| 60 | public function __construct(Adapter\AbstractAdapter $db, int $ttl = 0, string $table = 'pop_cache') |
| 61 | { |
| 62 | parent::__construct($ttl); |
| 63 | |
| 64 | $this->setDb($db); |
| 65 | $this->setTable($table); |
| 66 | |
| 67 | if (!$db->hasTable($this->table)) { |
| 68 | $this->createTable(); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Set the current cache db adapter. |
| 74 | * |
| 75 | * @param Adapter\AbstractAdapter $db |
| 76 | * @return Database |
| 77 | */ |
| 78 | public function setDb(Adapter\AbstractAdapter $db): Database |
| 79 | { |
| 80 | $this->db = $db; |
| 81 | return $this; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Get the current cache db adapter. |
| 86 | * |
| 87 | * @return Adapter\AbstractAdapter |
| 88 | */ |
| 89 | public function getDb(): Adapter\AbstractAdapter |
| 90 | { |
| 91 | return $this->db; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Get the current cache db table. |
| 96 | * |
| 97 | * @return string |
| 98 | */ |
| 99 | public function getTable(): string |
| 100 | { |
| 101 | return $this->table; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Get the time-to-live for an item in cache |
| 106 | * |
| 107 | * @param string $id |
| 108 | * @return int |
| 109 | */ |
| 110 | public function getItemTtl(string $id): int |
| 111 | { |
| 112 | $sql = $this->db->createSql(); |
| 113 | $placeholder = $sql->getPlaceholder(); |
| 114 | |
| 115 | if ($placeholder == ':') { |
| 116 | $placeholder .= 'key'; |
| 117 | } else if ($placeholder == '$') { |
| 118 | $placeholder .= '1'; |
| 119 | } |
| 120 | |
| 121 | $sql->select()->from($this->table)->where('key = ' . $placeholder); |
| 122 | |
| 123 | $this->db->prepare($sql) |
| 124 | ->bindParams(['key' => sha1($id)]) |
| 125 | ->execute(); |
| 126 | |
| 127 | $rows = $this->db->fetchAll(); |
| 128 | |
| 129 | return (isset($rows[0]) && isset($rows[0]['ttl'])) ? $rows[0]['ttl'] : 0; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Save an item to cache |
| 134 | * |
| 135 | * @param string $id |
| 136 | * @param mixed $value |
| 137 | * @param ?int $ttl |
| 138 | * @return Database |
| 139 | */ |
| 140 | public function saveItem(string $id, mixed $value, ?int $ttl = null): Database |
| 141 | { |
| 142 | // Determine if the value already exists. |
| 143 | $sql = $this->db->createSql(); |
| 144 | $placeholder = $sql->getPlaceholder(); |
| 145 | |
| 146 | if ($placeholder == ':') { |
| 147 | $placeholder .= 'key'; |
| 148 | } else if ($placeholder == '$') { |
| 149 | $placeholder .= '1'; |
| 150 | } |
| 151 | |
| 152 | $sql->select()->from($this->table)->where('key = ' . $placeholder); |
| 153 | |
| 154 | $this->db->prepare($sql) |
| 155 | ->bindParams(['key' => sha1($id)]) |
| 156 | ->execute(); |
| 157 | |
| 158 | $rows = $this->db->fetchAll(); |
| 159 | |
| 160 | $sql->reset(); |
| 161 | $placeholder = $sql->getPlaceholder(); |
| 162 | |
| 163 | // If the value doesn't exist, save the new value. |
| 164 | if (count($rows) == 0) { |
| 165 | if ($placeholder == ':') { |
| 166 | $placeholders = [':key', ':start', ':ttl', ':value']; |
| 167 | } else if ($placeholder == '$') { |
| 168 | $placeholders = ['$1', '$2', '$3', '$4']; |
| 169 | } else { |
| 170 | $placeholders = ['?', '?', '?', '?']; |
| 171 | } |
| 172 | $sql->insert($this->table)->values([ |
| 173 | 'key' => $placeholders[0], |
| 174 | 'start' => $placeholders[1], |
| 175 | 'ttl' => $placeholders[2], |
| 176 | 'value' => $placeholders[3] |
| 177 | ]); |
| 178 | $params = [ |
| 179 | 'key' => sha1($id), |
| 180 | 'start' => time(), |
| 181 | 'ttl' => ($ttl !== null) ? $ttl : $this->ttl, |
| 182 | 'value' => serialize($value) |
| 183 | ]; |
| 184 | // Else, update it. |
| 185 | } else { |
| 186 | if ($placeholder == ':') { |
| 187 | $placeholders = [':start', ':ttl', ':value', ':key']; |
| 188 | } else if ($placeholder == '$') { |
| 189 | $placeholders = ['$1', '$2', '$3', '$4']; |
| 190 | } else { |
| 191 | $placeholders = ['?', '?', '?', '?']; |
| 192 | } |
| 193 | $sql->update($this->table)->values([ |
| 194 | 'start' => $placeholders[0], |
| 195 | 'ttl' => $placeholders[1], |
| 196 | 'value' => $placeholders[2] |
| 197 | ])->where('key = ' . $placeholders[3]); |
| 198 | $params = [ |
| 199 | 'start' => time(), |
| 200 | 'ttl' => ($ttl !== null) ? $ttl : $this->ttl, |
| 201 | 'value' => serialize($value), |
| 202 | 'key' => sha1($id) |
| 203 | ]; |
| 204 | } |
| 205 | |
| 206 | // Save value |
| 207 | $this->db->prepare($sql) |
| 208 | ->bindParams($params) |
| 209 | ->execute(); |
| 210 | |
| 211 | return $this; |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Get an item from cache |
| 216 | * |
| 217 | * @param string $id |
| 218 | * @return mixed |
| 219 | */ |
| 220 | public function getItem(string $id): mixed |
| 221 | { |
| 222 | $sql = $this->db->createSql(); |
| 223 | $placeholder = $sql->getPlaceholder(); |
| 224 | $value = false; |
| 225 | |
| 226 | if ($placeholder == ':') { |
| 227 | $placeholder .= 'key'; |
| 228 | } else if ($placeholder == '$') { |
| 229 | $placeholder .= '1'; |
| 230 | } |
| 231 | |
| 232 | $sql->select()->from($this->table)->where('key = ' . $placeholder); |
| 233 | |
| 234 | $this->db->prepare($sql) |
| 235 | ->bindParams(['key' => sha1($id)]) |
| 236 | ->execute(); |
| 237 | |
| 238 | $rows = $this->db->fetchAll(); |
| 239 | |
| 240 | // If the value is found, check expiration and return. |
| 241 | if (count($rows) > 0) { |
| 242 | $cacheValue = $rows[0]; |
| 243 | if (($cacheValue['ttl'] == 0) || ((time() - $cacheValue['start']) <= $cacheValue['ttl'])) { |
| 244 | $value = unserialize($cacheValue['value']); |
| 245 | } else { |
| 246 | $this->deleteItem($id); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | return $value; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Determine if the item exist in cache |
| 255 | * |
| 256 | * @param string $id |
| 257 | * @return bool |
| 258 | */ |
| 259 | public function hasItem(string $id): bool |
| 260 | { |
| 261 | $sql = $this->db->createSql(); |
| 262 | $placeholder = $sql->getPlaceholder(); |
| 263 | $result = false; |
| 264 | |
| 265 | if ($placeholder == ':') { |
| 266 | $placeholder .= 'key'; |
| 267 | } else if ($placeholder == '$') { |
| 268 | $placeholder .= '1'; |
| 269 | } |
| 270 | |
| 271 | $sql->select()->from($this->table)->where('key = ' . $placeholder); |
| 272 | |
| 273 | $this->db->prepare($sql) |
| 274 | ->bindParams(['key' => sha1($id)]) |
| 275 | ->execute(); |
| 276 | |
| 277 | $rows = $this->db->fetchAll(); |
| 278 | |
| 279 | // If the value is found, check expiration and return. |
| 280 | if (count($rows) > 0) { |
| 281 | $cacheValue = $rows[0]; |
| 282 | $result = (($cacheValue['ttl'] == 0) || ((time() - $cacheValue['start']) <= $cacheValue['ttl'])); |
| 283 | } |
| 284 | |
| 285 | return $result; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Delete a value in cache |
| 290 | * |
| 291 | * @param string $id |
| 292 | * @return Database |
| 293 | */ |
| 294 | public function deleteItem(string $id): Database |
| 295 | { |
| 296 | $sql = $this->db->createSql(); |
| 297 | $placeholder = $sql->getPlaceholder(); |
| 298 | |
| 299 | if ($placeholder == ':') { |
| 300 | $placeholder .= 'key'; |
| 301 | } else if ($placeholder == '$') { |
| 302 | $placeholder .= '1'; |
| 303 | } |
| 304 | |
| 305 | $sql->delete($this->table)->where('key = ' . $placeholder); |
| 306 | |
| 307 | $this->db->prepare($sql) |
| 308 | ->bindParams(['key' => sha1($id)]) |
| 309 | ->execute(); |
| 310 | |
| 311 | return $this; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Clear all stored values from cache |
| 316 | * |
| 317 | * @return Database |
| 318 | */ |
| 319 | public function clear(): Database |
| 320 | { |
| 321 | $sql = $this->db->createSql(); |
| 322 | $sql->delete($this->table); |
| 323 | $this->db->query($sql); |
| 324 | |
| 325 | return $this; |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * Destroy cache resource |
| 330 | * |
| 331 | * @return Database |
| 332 | */ |
| 333 | public function destroy(): Database |
| 334 | { |
| 335 | $this->clear(); |
| 336 | return $this; |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * Set the cache db table |
| 341 | * |
| 342 | * @param string $table |
| 343 | * @return Database |
| 344 | */ |
| 345 | public function setTable(string $table): Database |
| 346 | { |
| 347 | $this->table = $table; |
| 348 | return $this; |
| 349 | } |
| 350 | |
| 351 | /** |
| 352 | * Create table in database |
| 353 | * |
| 354 | * @return void |
| 355 | */ |
| 356 | protected function createTable(): void |
| 357 | { |
| 358 | $schema = $this->db->createSchema(); |
| 359 | $schema->create($this->table) |
| 360 | ->int('id')->increment() |
| 361 | ->varchar('key', 255) |
| 362 | ->int('start') |
| 363 | ->int('ttl') |
| 364 | ->text('value') |
| 365 | ->primary('id'); |
| 366 | |
| 367 | $this->db->query($schema); |
| 368 | } |
| 369 | } |