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RedisCircuitBreaker.php
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RedisCircuitBreaker.php
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<?php
declare(strict_types=1);
namespace Postcon\Resilience;
class RedisCircuitBreaker extends AbstractCircuitBreaker
{
/** @var \Redis */
private $redis;
/** @var string */
private $name;
/** @var string */
private $key;
/** @var int */
private $lifetime;
/** @var int */
private $maxErrors;
public function __construct(\Redis $redis, string $name, int $lifetime = 120, int $maxErrors = 3)
{
$this->redis = $redis;
$this->name = $name;
$this->key = sprintf('[%s]:%s', __CLASS__, $name);
$this->lifetime = $lifetime;
$this->maxErrors = $maxErrors;
}
public function isAvailable(): bool
{
return $this->redis->get($this->key) < $this->maxErrors;
}
public function reportSuccess(): void
{
$this->redis->del($this->key);
}
public function reportFailure(): void
{
$this->redis->incr($this->key);
$this->redis->expire($this->key, $this->lifetime);
}
public function __toString(): string
{
return $this->name;
}
}