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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\Adapter; |
| 16 | |
| 17 | use Pop\Cache\Clock; |
| 18 | |
| 19 | /** |
| 20 | * Cache adapter abstract class |
| 21 | * |
| 22 | * @category Pop |
| 23 | * @package Pop\Cache |
| 24 | * @author Nick Sagona, III <nick@popphp.org> |
| 25 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 26 | * @license https://www.popphp.org/license New BSD License |
| 27 | * @version 5.0.0 |
| 28 | */ |
| 29 | abstract class AbstractAdapter implements AdapterInterface |
| 30 | { |
| 31 | |
| 32 | /** |
| 33 | * Global time-to-live |
| 34 | * @var int |
| 35 | */ |
| 36 | protected int $ttl = 0; |
| 37 | |
| 38 | /** |
| 39 | * Clock used to resolve the current time |
| 40 | * @var Clock\ClockInterface |
| 41 | */ |
| 42 | protected Clock\ClockInterface $clock; |
| 43 | |
| 44 | /** |
| 45 | * Constructor |
| 46 | * |
| 47 | * Instantiate the cache adapter object |
| 48 | * |
| 49 | * @param int $ttl |
| 50 | * @param Clock\ClockInterface $clock |
| 51 | */ |
| 52 | public function __construct(int $ttl = 0, Clock\ClockInterface $clock = new Clock\SystemClock()) |
| 53 | { |
| 54 | $this->setTtl($ttl); |
| 55 | $this->clock = $clock; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Set the global time-to-live for the cache adapter |
| 60 | * |
| 61 | * @param int $ttl |
| 62 | * @return AbstractAdapter |
| 63 | */ |
| 64 | public function setTtl(int $ttl): AbstractAdapter |
| 65 | { |
| 66 | $this->ttl = $ttl; |
| 67 | return $this; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Get the global time-to-live for the cache object |
| 72 | * |
| 73 | * @return int |
| 74 | */ |
| 75 | public function getTtl(): int |
| 76 | { |
| 77 | return $this->ttl; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Determine if a cache envelope (with 'start'/'ttl' keys) is still within its time-to-live |
| 82 | * |
| 83 | * @param array $envelope |
| 84 | * @return bool |
| 85 | */ |
| 86 | protected function isFresh(array $envelope): bool |
| 87 | { |
| 88 | return ($envelope['ttl'] == 0) || (($this->clock->now() - $envelope['start']) <= $envelope['ttl']); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Get the time-to-live for an item in cache |
| 93 | * |
| 94 | * @param string $id |
| 95 | * @param int $default |
| 96 | * @return int |
| 97 | */ |
| 98 | abstract public function getItemTtl(string $id, int $default = 0): int; |
| 99 | |
| 100 | /** |
| 101 | * Save an item to cache |
| 102 | * |
| 103 | * @param string $id |
| 104 | * @param mixed $value |
| 105 | * @param ?int $ttl |
| 106 | * @return AbstractAdapter |
| 107 | */ |
| 108 | abstract public function saveItem(string $id, mixed $value, ?int $ttl = null): AbstractAdapter; |
| 109 | |
| 110 | /** |
| 111 | * Get an item from cache |
| 112 | * |
| 113 | * @param string $id |
| 114 | * @param mixed $default |
| 115 | * @return mixed |
| 116 | */ |
| 117 | abstract public function getItem(string $id, mixed $default = false): mixed; |
| 118 | |
| 119 | /** |
| 120 | * Determine if the item exist in cache |
| 121 | * |
| 122 | * @param string $id |
| 123 | * @return bool |
| 124 | */ |
| 125 | abstract public function hasItem(string $id): bool; |
| 126 | |
| 127 | /** |
| 128 | * Delete a value in cache |
| 129 | * |
| 130 | * @param string $id |
| 131 | * @return AbstractAdapter |
| 132 | */ |
| 133 | abstract public function deleteItem(string $id): AbstractAdapter; |
| 134 | |
| 135 | /** |
| 136 | * Clear all stored values from cache |
| 137 | * |
| 138 | * @return AbstractAdapter |
| 139 | */ |
| 140 | abstract public function clear(): AbstractAdapter; |
| 141 | |
| 142 | /** |
| 143 | * Destroy cache resource |
| 144 | * |
| 145 | * @return AbstractAdapter |
| 146 | */ |
| 147 | abstract public function destroy(): AbstractAdapter; |
| 148 | |
| 149 | /** |
| 150 | * Atomically increment a counter in cache, creating it at $initial if it doesn't exist |
| 151 | * |
| 152 | * @param string $id |
| 153 | * @param int $amount |
| 154 | * @param int $initial |
| 155 | * @param ?int $ttl |
| 156 | * @return int |
| 157 | */ |
| 158 | abstract public function incrementItem(string $id, int $amount = 1, int $initial = 0, ?int $ttl = null): int; |
| 159 | |
| 160 | /** |
| 161 | * Atomically decrement a counter in cache, creating it at $initial if it doesn't exist |
| 162 | * |
| 163 | * @param string $id |
| 164 | * @param int $amount |
| 165 | * @param int $initial |
| 166 | * @param ?int $ttl |
| 167 | * @return int |
| 168 | */ |
| 169 | abstract public function decrementItem(string $id, int $amount = 1, int $initial = 0, ?int $ttl = null): int; |
| 170 | |
| 171 | } |