1 files changed, 158 insertions, 0 deletions
diff --git a/src/PSR7Client.php b/src/PSR7Client.php
new file mode 100644
index 00000000..e8d93fe8
--- /dev/null
+++ b/src/PSR7Client.php
@@ -0,0 +1,158 @@
+<?php
+/**
+ * High-performance PHP process supervisor and load balancer written in Go
+ *
+ * @author Wolfy-J
+ */
+
+namespace Spiral\RoadRunner;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Zend\Diactoros;
+
+/**
+ * Manages PSR-7 request and response.
+ */
+class PSR7Client
+{
+    /**
+     * @varWorker
+     */
+    private $worker;
+
+    /**
+     * @param Worker $worker
+     */
+    public function __construct(Worker $worker)
+    {
+        $this->worker = $worker;
+    }
+
+    /**
+     * @return Worker
+     */
+    public function getWorker(): Worker
+    {
+        return $this->worker;
+    }
+
+    /**
+     * @return ServerRequestInterface|null
+     */
+    public function acceptRequest()
+    {
+        $body = $this->worker->receive($ctx);
+        if (empty($body) && empty($ctx)) {
+            // termination request
+            return null;
+        }
+
+        if (empty($ctx = json_decode($ctx, true))) {
+            // invalid context
+            return null;
+        }
+
+        parse_str($ctx['rawQuery'], $query);
+
+        $bodyStream = 'php://input';
+        $parsedBody = null;
+        if ($ctx['parsed']) {
+            $parsedBody = json_decode($body, true);
+        } elseif ($body != null) {
+            $bodyStream = new Diactoros\Stream("php://memory", "rwb");
+            $bodyStream->write($body);
+        }
+
+        $_SERVER = $this->configureServer($ctx);
+
+        $request = new Diactoros\ServerRequest(
+            $_SERVER,
+            $this->wrapUploads($ctx['uploads']),
+            $ctx['uri'],
+            $ctx['method'],
+            $bodyStream,
+            $ctx['headers'],
+            $ctx['cookies'],
+            $query,
+            $parsedBody,
+            $ctx['protocol']
+        );
+
+        if (!empty($ctx['attributes'])) {
+            foreach ($ctx['attributes'] as $key => $value) {
+                $request = $request->withAttribute($key, $value);
+            }
+        }
+
+        return $request;
+    }
+
+    /**
+     * Send response to the application server.
+     *
+     * @param ResponseInterface $response
+     */
+    public function respond(ResponseInterface $response)
+    {
+        $headers = $response->getHeaders();
+        if (empty($headers)) {
+            // this is required to represent empty header set as map and not as array
+            $headers = new \stdClass();
+        }
+
+        $this->worker->send($response->getBody(), json_encode([
+            'status'  => $response->getStatusCode(),
+            'headers' => $headers
+        ]));
+    }
+
+   /**
+     * Returns altered copy of _SERVER variable. Sets ip-address,
+     * request-time and other values.
+     *
+     * @param array $ctx
+     * @return array
+     */
+    protected function configureServer(array $ctx): array
+    {
+        $server = $_SERVER;
+        $server['REQUEST_TIME'] = time();
+        $server['REQUEST_TIME_FLOAT'] = microtime(true);
+        $server['REMOTE_ADDR'] = $ctx['attributes']['ipAddress'] ?? $ctx['remoteAddr'] ?? '127.0.0.1';
+
+        return $server;
+    }
+
+    /**
+     * Wraps all uploaded files with UploadedFile.
+     *
+     * @param array $files
+     *
+     * @return array
+     */
+    private function wrapUploads($files): array
+    {
+        if (empty($files)) {
+            return [];
+        }
+
+        $result = [];
+        foreach ($files as $index => $f) {
+            if (!isset($f['name'])) {
+                $result[$index] = $this->wrapUploads($f);
+                continue;
+            }
+
+            $result[$index] = new Diactoros\UploadedFile(
+                $f['tmpName'],
+                $f['size'],
+                $f['error'],
+                $f['name'],
+                $f['mime']
+            );
+        }
+
+        return $result;
+    }
+}
+\ No newline at end of file