Initial import.

vendor/guzzle/plugin-cache/Guzzle/Plugin/Cache/CallbackCanCacheStrategy.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Guzzle\Plugin\Cache;
+
+use Guzzle\Common\Exception\InvalidArgumentException;
+use Guzzle\Http\Message\RequestInterface;
+use Guzzle\Http\Message\Response;
+
+/**
+ * Determines if a request can be cached using a callback
+ */
+class CallbackCanCacheStrategy extends DefaultCanCacheStrategy
+{
+    /** @var callable Callback for request */
+    protected $requestCallback;
+
+    /** @var callable Callback for response */
+    protected $responseCallback;
+
+    /**
+     * @param \Closure|array|mixed $requestCallback  Callable method to invoke for requests
+     * @param \Closure|array|mixed $responseCallback Callable method to invoke for responses
+     *
+     * @throws InvalidArgumentException
+     */
+    public function __construct($requestCallback = null, $responseCallback = null)
+    {
+        if ($requestCallback && !is_callable($requestCallback)) {
+            throw new InvalidArgumentException('Method must be callable');
+        }
+
+        if ($responseCallback && !is_callable($responseCallback)) {
+            throw new InvalidArgumentException('Method must be callable');
+        }
+
+        $this->requestCallback = $requestCallback;
+        $this->responseCallback = $responseCallback;
+    }
+
+    public function canCacheRequest(RequestInterface $request)
+    {
+        return $this->requestCallback
+            ? call_user_func($this->requestCallback, $request)
+            : parent::canCacheRequest($request);
+    }
+
+    public function canCacheResponse(Response $response)
+    {
+        return $this->responseCallback
+            ? call_user_func($this->responseCallback, $response)
+            : parent::canCacheResponse($response);
+    }
+}