Add benchmarking example

reactphp · Apr 7, 2017 · da66ade · da66ade
1 parent 6cbba57
commit da66ade
Showing 1 changed file with 94 additions and 0 deletions.
diff --git a/examples/99-benchmark-download.php b/examples/99-benchmark-download.php
@@ -0,0 +1,94 @@
+<?php
+
+// $ php examples/99-benchmark-download.php 8080
+// $ curl http://localhost:8080/10g.bin > /dev/null
+// $ wget http://localhost:8080/10g.bin -O /dev/null
+// $ ab -n10 -c10 http://localhost:8080/1g.bin
+// $ docker run -it --rm --net=host jordi/ab ab -n10 -c10 http://localhost:8080/1g.bin
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Http\Response;
+use Psr\Http\Message\RequestInterface;
+use React\Stream\ReadableStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+$socket = new Server(isset($argv[1]) ? $argv[1] : '0.0.0.0:0', $loop);
+
+/** A readable stream that can emit a lot of data */
+class ChunkRepeater extends ReadableStream
+{
+    private $chunk;
+    private $count;
+    private $position = 0;
+    private $paused = true;
+
+    public function __construct($chunk, $count)
+    {
+        $this->chunk = $chunk;
+        $this->count = $count;
+    }
+
+    public function pause()
+    {
+        $this->paused = true;
+    }
+
+    public function resume()
+    {
+        if (!$this->paused) {
+            return;
+        }
+
+        // keep emitting until stream is paused
+        $this->paused = false;
+        while ($this->position < $this->count && !$this->paused) {
+            ++$this->position;
+            $this->emit('data', array($this->chunk));
+        }
+
+        // end once the last chunk has been written
+        if ($this->position >= $this->count) {
+            $this->emit('end');
+            $this->close();
+        }
+    }
+
+    public function getSize()
+    {
+        return strlen($this->chunk) * $this->count;
+    }
+}
+
+$server = new \React\Http\Server($socket, function (RequestInterface $request) use ($loop) {
+    switch ($request->getUri()->getPath()) {
+        case '/':
+            return new Response(
+                200,
+                array('Content-Type' => 'text/html'),
+                '<html><a href="1g.bin">1g.bin</a><br/><a href="10g.bin">10g.bin</a></html>'
+            );
+        case '/1g.bin':
+            $stream = new ChunkRepeater(str_repeat('.', 1000000), 1000);
+            break;
+        case '/10g.bin':
+            $stream = new ChunkRepeater(str_repeat('.', 1000000), 10000);
+            break;
+        default:
+            return new Response(404);
+    }
+
+    $loop->addTimer(0, array($stream, 'resume'));
+
+    return new Response(
+        200,
+        array('Content-Type' => 'application/octet-data', 'Content-Length' => $stream->getSize()),
+        $stream
+    );
+});
+
+echo 'Listening on http://' . $socket->getAddress() . PHP_EOL;
+
+$loop->run();