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<?php |
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declare(strict_types=1); |
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namespace PTS\RateLimiter\Adapter; |
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use PTS\RateLimiter\StoreInterface; |
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class MemoryAdapter implements StoreInterface |
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{ |
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protected int $cleanExpired = 30; |
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protected int $lastClean = 0; |
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protected array $store = []; |
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protected array $ttlKeys = []; |
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public function get(string $key): int |
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{ |
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$this->isNeedCleanExpired() && $this->cleanExpired(); |
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return $this->store[$key] ?? 0; |
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} |
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public function __construct(int $cleanExpired = 30) |
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{ |
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$this->cleanExpired = $cleanExpired; |
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$this->lastClean = time(); |
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} |
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public function inc(string $key, int $ttl = 60): int |
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{ |
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$value = $this->get($key); |
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$this->store[$key] = ++$value; |
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if ($value === 1) { |
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$this->ttlKeys[$key] = time() + $ttl; |
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} |
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return $value; |
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} |
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public function reset(string $key): bool |
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{ |
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unset($this->store[$key], $this->ttlKeys[$key]); |
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return true; |
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} |
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public function isExceeded(string $key, int $max): bool |
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{ |
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$value = $this->get($key); |
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return $value >= $max; |
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} |
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protected function isNeedCleanExpired(): bool |
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{ |
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return ($this->lastClean + $this->cleanExpired) <= time(); |
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} |
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1 |
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protected function cleanExpired(): void |
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{ |
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1 |
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$current = time(); |
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$this->ttlKeys = array_filter ($this->ttlKeys, function (int $time, string $key) use ($current) { |
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$isExpired = $time < $current; |
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if ($isExpired) { |
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unset($this->store[$key]); |
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} |
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return !$isExpired; |
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1 |
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}, ARRAY_FILTER_USE_BOTH); |
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1 |
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} |
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2 |
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public function ttl(string $key): ?int |
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{ |
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2 |
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if (array_key_exists($key, $this->ttlKeys)) { |
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$ttl = $this->ttlKeys[$key] - time(); |
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return $ttl > 0 ? $ttl : 0; |
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} |
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1 |
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return null; |
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} |
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} |
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alexpts /
php-rate-limiter
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