[Summary view]

   1  <?php
   2  
   3  namespace Kevinrob\GuzzleCache\Strategy\Delegate;
   4  
   5  use Kevinrob\GuzzleCache\Strategy\CacheStrategyInterface;
   6  use Kevinrob\GuzzleCache\Strategy\NullCacheStrategy;
   7  use Psr\Http\Message\RequestInterface;
   8  use Psr\Http\Message\ResponseInterface;
   9  
  10  class DelegatingCacheStrategy implements CacheStrategyInterface
  11  {
  12      /**
  13       * @var array
  14       */
  15      private $requestMatchers = [];
  16  
  17      /**
  18       * @var CacheStrategyInterface
  19       */
  20      private $defaultCacheStrategy;
  21  
  22      /**
  23       * DelegatingCacheStrategy constructor.
  24       */
  25      public function __construct(CacheStrategyInterface $defaultCacheStrategy = null)
  26      {
  27          $this->defaultCacheStrategy = $defaultCacheStrategy ?: new NullCacheStrategy();
  28      }
  29  
  30      /**
  31       * @param CacheStrategyInterface $defaultCacheStrategy
  32       */
  33      public function setDefaultCacheStrategy(CacheStrategyInterface $defaultCacheStrategy)
  34      {
  35          $this->defaultCacheStrategy = $defaultCacheStrategy;
  36      }
  37  
  38      /**
  39       * @param RequestMatcherInterface $requestMatcher
  40       * @param CacheStrategyInterface  $cacheStrategy
  41       */
  42      final public function registerRequestMatcher(RequestMatcherInterface $requestMatcher, CacheStrategyInterface $cacheStrategy)
  43      {
  44          $this->requestMatchers[] = [
  45              $requestMatcher,
  46              $cacheStrategy,
  47          ];
  48      }
  49  
  50      /**
  51       * @param RequestInterface $request
  52       * @return CacheStrategyInterface
  53       */
  54      private function getStrategyFor(RequestInterface $request)
  55      {
  56          /**
  57           * @var RequestMatcherInterface $requestMatcher
  58           * @var CacheStrategyInterface $cacheStrategy
  59           */
  60          foreach ($this->requestMatchers as $requestMatcher) {
  61              list($requestMatcher, $cacheStrategy) = $requestMatcher;
  62              if ($requestMatcher->matches($request)) {
  63                  return $cacheStrategy;
  64              }
  65          }
  66  
  67          return $this->defaultCacheStrategy;
  68      }
  69  
  70      /**
  71       * @inheritDoc
  72       */
  73      public function fetch(RequestInterface $request)
  74      {
  75          return $this->getStrategyFor($request)->fetch($request);
  76      }
  77  
  78      /**
  79       * @inheritDoc
  80       */
  81      public function cache(RequestInterface $request, ResponseInterface $response)
  82      {
  83          return $this->getStrategyFor($request)->cache($request, $response);
  84      }
  85  
  86      /**
  87       * @inheritDoc
  88       */
  89      public function update(RequestInterface $request, ResponseInterface $response)
  90      {
  91          return $this->getStrategyFor($request)->update($request, $response);
  92      }
  93  
  94      /**
  95       * {@inheritdoc}
  96       */
  97      public function delete(RequestInterface $request)
  98      {
  99          return $this->getStrategyFor($request)->delete($request);
 100      }
 101  }