S3/Minio storage controller Support

storage-controllers/s3/Aws/Handler/GuzzleV5/PsrStream.php

@@ -0,0 +1,34 @@
+<?php
+namespace Aws\Handler\GuzzleV5;
+
+use GuzzleHttp\Stream\StreamDecoratorTrait;
+use GuzzleHttp\Stream\StreamInterface as GuzzleStreamInterface;
+use Psr\Http\Message\StreamInterface as Psr7StreamInterface;
+
+/**
+ * Adapts a Guzzle 5 Stream to a PSR-7 Stream.
+ *
+ * @codeCoverageIgnore
+ */
+class PsrStream implements Psr7StreamInterface
+{
+    use StreamDecoratorTrait;
+
+    /** @var GuzzleStreamInterface */
+    private $stream;
+
+    public function __construct(GuzzleStreamInterface $stream)
+    {
+        $this->stream = $stream;
+    }
+
+    public function rewind()
+    {
+        $this->stream->seek(0);
+    }
+
+    public function getContents()
+    {
+        return $this->stream->getContents();
+    }
+}