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90 lines (77 loc) · 2.14 KB
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<?php
declare(strict_types=1);
/*
* This file is part of the Geocoder package.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @license MIT License
*/
namespace Geocoder\Plugin\Plugin;
use Geocoder\Model\Coordinates;
use Geocoder\Plugin\Plugin;
use Geocoder\Query\Query;
use Geocoder\Query\ReverseQuery;
use Psr\SimpleCache\CacheInterface;
/**
* Cache the result of a query.
*
* @author Tobias Nyholm <tobias.nyholm@gmail.com>
*/
class CachePlugin implements Plugin
{
/**
* @var CacheInterface
*/
private $cache;
/**
* How log a result is going to be cached.
*
* @var int|null
*/
private $lifetime;
/**
* @var int|null
*/
private $precision;
/**
* @param CacheInterface $cache
* @param int|null $lifetime
* @param int|null $precision
*/
public function __construct(CacheInterface $cache, int $lifetime = null, int $precision = null)
{
$this->cache = $cache;
$this->lifetime = $lifetime;
$this->precision = $precision;
}
/**
* {@inheritdoc}
*/
public function handleQuery(Query $query, callable $next, callable $first)
{
$cacheKey = $this->getCacheKey($query);
if (null !== $cachedResult = $this->cache->get($cacheKey)) {
return $cachedResult;
}
$result = $next($query);
$this->cache->set($cacheKey, $result, $this->lifetime);
return $result;
}
/**
* @param Query $query
*
* @return string
*/
private function getCacheKey(Query $query): string
{
if (null !== $this->precision && $query instanceof ReverseQuery) {
$query = $query->withCoordinates(new Coordinates(
number_format($query->getCoordinates()->getLatitude(), $this->precision),
number_format($query->getCoordinates()->getLongitude(), $this->precision)
));
}
// Include the major version number of the geocoder to avoid issues unserializing.
return 'v4'.sha1((string) $query);
}
}