installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/lib/Azure/GuzzleHttp/TransferStats.php

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+<?php
+namespace GuzzleHttp;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Represents data at the point after it was transferred either successfully
+ * or after a network error.
+ */
+final class TransferStats
+{
+    private $request;
+    private $response;
+    private $transferTime;
+    private $handlerStats;
+    private $handlerErrorData;
+
+    /**
+     * @param RequestInterface  $request          Request that was sent.
+     * @param ResponseInterface $response         Response received (if any)
+     * @param null              $transferTime     Total handler transfer time.
+     * @param mixed             $handlerErrorData Handler error data.
+     * @param array             $handlerStats     Handler specific stats.
+     */
+    public function __construct(
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        $transferTime = null,
+        $handlerErrorData = null,
+        $handlerStats = []
+    ) {
+        $this->request = $request;
+        $this->response = $response;
+        $this->transferTime = $transferTime;
+        $this->handlerErrorData = $handlerErrorData;
+        $this->handlerStats = $handlerStats;
+    }
+
+    /**
+     * @return RequestInterface
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+
+    /**
+     * Returns the response that was received (if any).
+     *
+     * @return ResponseInterface|null
+     */
+    public function getResponse()
+    {
+        return $this->response;
+    }
+
+    /**
+     * Returns true if a response was received.
+     *
+     * @return bool
+     */
+    public function hasResponse()
+    {
+        return $this->response !== null;
+    }
+
+    /**
+     * Gets handler specific error data.
+     *
+     * This might be an exception, a integer representing an error code, or
+     * anything else. Relying on this value assumes that you know what handler
+     * you are using.
+     *
+     * @return mixed
+     */
+    public function getHandlerErrorData()
+    {
+        return $this->handlerErrorData;
+    }
+
+    /**
+     * Get the effective URI the request was sent to.
+     *
+     * @return UriInterface
+     */
+    public function getEffectiveUri()
+    {
+        return $this->request->getUri();
+    }
+
+    /**
+     * Get the estimated time the request was being transferred by the handler.
+     *
+     * @return float Time in seconds.
+     */
+    public function getTransferTime()
+    {
+        return $this->transferTime;
+    }
+
+    /**
+     * Gets an array of all of the handler specific transfer data.
+     *
+     * @return array
+     */
+    public function getHandlerStats()
+    {
+        return $this->handlerStats;
+    }
+
+    /**
+     * Get a specific handler statistic from the handler by name.
+     *
+     * @param string $stat Handler specific transfer stat to retrieve.
+     *
+     * @return mixed|null
+     */
+    public function getHandlerStat($stat)
+    {
+        return isset($this->handlerStats[$stat])
+            ? $this->handlerStats[$stat]
+            : null;
+    }
+}