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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Cache\Psr6; |
| 16 | |
| 17 | use Pop\Cache\Adapter; |
| 18 | use Pop\Cache\InvalidArgumentException; |
| 19 | use Pop\Cache\ValidatesKey; |
| 20 | |
| 21 | /** |
| 22 | * PSR-6 cache item pool class |
| 23 | * |
| 24 | * @category Pop |
| 25 | * @package Pop\Cache |
| 26 | * @author Nick Sagona, III <nick@popphp.org> |
| 27 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 28 | * @license https://www.popphp.org/license New BSD License |
| 29 | * @version 5.0.0 |
| 30 | */ |
| 31 | class CacheItemPool implements \Psr\Cache\CacheItemPoolInterface |
| 32 | { |
| 33 | |
| 34 | /** |
| 35 | * Traits |
| 36 | */ |
| 37 | use ValidatesKey; |
| 38 | |
| 39 | /** |
| 40 | * Cache adapter |
| 41 | * @var Adapter\AdapterInterface |
| 42 | */ |
| 43 | protected Adapter\AdapterInterface $adapter; |
| 44 | |
| 45 | /** |
| 46 | * Deferred cache items, keyed by item key |
| 47 | * @var array |
| 48 | */ |
| 49 | protected array $deferred = []; |
| 50 | |
| 51 | /** |
| 52 | * Constructor |
| 53 | * |
| 54 | * Instantiate the cache item pool object |
| 55 | * |
| 56 | * @param Adapter\AdapterInterface $adapter |
| 57 | */ |
| 58 | public function __construct(Adapter\AdapterInterface $adapter) |
| 59 | { |
| 60 | $this->adapter = $adapter; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Destructor |
| 65 | * |
| 66 | * Ensure any deferred cache items are persisted before the pool is destroyed, per PSR-6 ยง1.4 |
| 67 | * ("A Pool MUST ensure that any deferred cache items are eventually persisted"). A destructor |
| 68 | * must never let an exception escape, so failures here are swallowed. |
| 69 | * |
| 70 | * @return void |
| 71 | */ |
| 72 | public function __destruct() |
| 73 | { |
| 74 | try { |
| 75 | $this->commit(); |
| 76 | } catch (\Throwable $e) { |
| 77 | // Destructors must not throw |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Get a cache item by key |
| 83 | * |
| 84 | * @param string $key |
| 85 | * @throws InvalidArgumentException |
| 86 | * @return CacheItem |
| 87 | */ |
| 88 | public function getItem(string $key): CacheItem |
| 89 | { |
| 90 | $this->validateKey($key); |
| 91 | |
| 92 | if (isset($this->deferred[$key])) { |
| 93 | return $this->deferred[$key]; |
| 94 | } |
| 95 | |
| 96 | $miss = new \stdClass(); |
| 97 | $value = $this->adapter->getItem($key, $miss); |
| 98 | |
| 99 | return ($value === $miss) ? new CacheItem($key, null, false) : new CacheItem($key, $value, true); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Get multiple cache items by their keys |
| 104 | * |
| 105 | * @param array $keys |
| 106 | * @throws InvalidArgumentException |
| 107 | * @return iterable |
| 108 | */ |
| 109 | public function getItems(array $keys = []): iterable |
| 110 | { |
| 111 | foreach ($keys as $key) { |
| 112 | $this->validateKey($key); |
| 113 | } |
| 114 | |
| 115 | $items = []; |
| 116 | foreach ($keys as $key) { |
| 117 | $items[$key] = $this->getItem($key); |
| 118 | } |
| 119 | |
| 120 | return $items; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Determine if the cache contains an item for the given key |
| 125 | * |
| 126 | * @param string $key |
| 127 | * @throws InvalidArgumentException |
| 128 | * @return bool |
| 129 | */ |
| 130 | public function hasItem(string $key): bool |
| 131 | { |
| 132 | $this->validateKey($key); |
| 133 | |
| 134 | if (isset($this->deferred[$key])) { |
| 135 | return true; |
| 136 | } |
| 137 | |
| 138 | return $this->adapter->hasItem($key); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Delete an item from the cache |
| 143 | * |
| 144 | * @param string $key |
| 145 | * @throws InvalidArgumentException |
| 146 | * @return bool |
| 147 | */ |
| 148 | public function deleteItem(string $key): bool |
| 149 | { |
| 150 | $this->validateKey($key); |
| 151 | $this->adapter->deleteItem($key); |
| 152 | unset($this->deferred[$key]); |
| 153 | |
| 154 | return true; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Delete multiple items from the cache |
| 159 | * |
| 160 | * @param array $keys |
| 161 | * @throws InvalidArgumentException |
| 162 | * @return bool |
| 163 | */ |
| 164 | public function deleteItems(array $keys): bool |
| 165 | { |
| 166 | foreach ($keys as $key) { |
| 167 | $this->validateKey($key); |
| 168 | } |
| 169 | |
| 170 | foreach ($keys as $key) { |
| 171 | $this->deleteItem($key); |
| 172 | } |
| 173 | |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Clear all stored values from cache |
| 179 | * |
| 180 | * @return bool |
| 181 | */ |
| 182 | public function clear(): bool |
| 183 | { |
| 184 | $this->adapter->clear(); |
| 185 | $this->deferred = []; |
| 186 | |
| 187 | return true; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Persist a cache item immediately |
| 192 | * |
| 193 | * A resolved expiration of zero or negative seconds deletes the item instead of caching it |
| 194 | * permanently, since the underlying adapter's saveItem() treats a TTL of 0 as "never expires" โ |
| 195 | * the opposite of what an already-expired item should do. |
| 196 | * |
| 197 | * @param \Psr\Cache\CacheItemInterface $item |
| 198 | * @throws InvalidArgumentException |
| 199 | * @return bool |
| 200 | */ |
| 201 | public function save(\Psr\Cache\CacheItemInterface $item): bool |
| 202 | { |
| 203 | if (!($item instanceof CacheItem)) { |
| 204 | throw new InvalidArgumentException( |
| 205 | 'Error: The cache item must be an instance of ' . CacheItem::class . '.' |
| 206 | ); |
| 207 | } |
| 208 | |
| 209 | $this->validateKey($item->getKey()); |
| 210 | |
| 211 | $seconds = $item->getExpirationSeconds(); |
| 212 | |
| 213 | if (($seconds !== null) && ($seconds <= 0)) { |
| 214 | $this->adapter->deleteItem($item->getKey()); |
| 215 | } else { |
| 216 | $this->adapter->saveItem($item->getKey(), $item->get(), $seconds); |
| 217 | } |
| 218 | |
| 219 | unset($this->deferred[$item->getKey()]); |
| 220 | |
| 221 | return true; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Queue a cache item to be persisted later |
| 226 | * |
| 227 | * @param \Psr\Cache\CacheItemInterface $item |
| 228 | * @throws InvalidArgumentException |
| 229 | * @return bool |
| 230 | */ |
| 231 | public function saveDeferred(\Psr\Cache\CacheItemInterface $item): bool |
| 232 | { |
| 233 | if (!($item instanceof CacheItem)) { |
| 234 | throw new InvalidArgumentException( |
| 235 | 'Error: The cache item must be an instance of ' . CacheItem::class . '.' |
| 236 | ); |
| 237 | } |
| 238 | |
| 239 | $this->validateKey($item->getKey()); |
| 240 | $this->deferred[$item->getKey()] = $item; |
| 241 | |
| 242 | return true; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Persist all deferred cache items |
| 247 | * |
| 248 | * @return bool |
| 249 | */ |
| 250 | public function commit(): bool |
| 251 | { |
| 252 | $result = true; |
| 253 | $items = $this->deferred; |
| 254 | |
| 255 | foreach ($items as $item) { |
| 256 | $result = $this->save($item) && $result; |
| 257 | } |
| 258 | |
| 259 | $this->deferred = []; |
| 260 | |
| 261 | return $result; |
| 262 | } |
| 263 | |
| 264 | } |