|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Yiisoft\Yii\RateLimiter\Storage; |
|
6
|
|
|
|
|
7
|
|
|
use InvalidArgumentException; |
|
8
|
|
|
|
|
9
|
|
|
/** |
|
10
|
|
|
* To use this storage, the [APCu PHP extension](http://www.php.net/apcu) must be loaded, |
|
11
|
|
|
* And you should add "apc.enabled = 1" to your php.ini. |
|
12
|
|
|
* In order to enable APCu for CLI you should add "apc.enable_cli = 1" to your php.ini. |
|
13
|
|
|
*/ |
|
14
|
|
|
final class ApcuStorage implements StorageInterface |
|
15
|
|
|
{ |
|
16
|
|
|
private const DEFAULT_FIX_PRECISION_RATE = 1000; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* @param int $fixPrecisionRate |
|
20
|
|
|
* Apcu_cas of ACPu does not support float, and yet supports int. |
|
21
|
|
|
* APCu's stored value multiply by $fixPrecisionRate converts to int, |
|
22
|
|
|
* AND the getter's value divide by $fixPrecisionRate converts to float. |
|
23
|
|
|
* So use it to improve precision. |
|
24
|
|
|
*/ |
|
25
|
|
|
public function __construct( |
|
26
|
|
|
private int $fixPrecisionRate = self::DEFAULT_FIX_PRECISION_RATE |
|
27
|
|
|
) { |
|
28
|
|
|
} |
|
29
|
|
|
|
|
30
|
|
|
public function saveIfNotExists(string $key, float $value, int $ttl): bool |
|
31
|
|
|
{ |
|
32
|
|
|
$value = (int) ($value * $this->fixPrecisionRate); |
|
33
|
|
|
|
|
34
|
|
|
return apcu_add($key, $value, $ttl); |
|
|
|
|
|
|
35
|
|
|
} |
|
36
|
|
|
|
|
37
|
|
|
public function saveCompareAndSwap(string $key, float $oldValue, float $newValue, int $ttl): bool |
|
38
|
|
|
{ |
|
39
|
|
|
$oldValue = (int) ($oldValue * $this->fixPrecisionRate); |
|
40
|
|
|
$newValue = (int) ($newValue * $this->fixPrecisionRate); |
|
41
|
|
|
|
|
42
|
|
|
return apcu_cas($key, $oldValue, $newValue); |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
|
|
public function get(string $key): ?float |
|
46
|
|
|
{ |
|
47
|
|
|
$value = apcu_fetch($key); |
|
48
|
|
|
if (!is_int($value) && !is_float($value) && $value !== false) { |
|
49
|
|
|
throw new InvalidArgumentException('The value is not supported by ApcuStorage, it must be int, float.'); |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
$value = ($value !== false) ? (float)$value / $this->fixPrecisionRate : null; |
|
53
|
|
|
return $value; |
|
54
|
|
|
} |
|
55
|
|
|
} |
|
56
|
|
|
|
yiisoft /
rate-limiter
Loading history...