Add export call, to export a container into a tar stream

joelwurtz · joelwurtz · commit e18eb7480d50 · 2014-11-28T15:10:02.000+01:00
diff --git a/src/Docker/Manager/ContainerManager.php b/src/Docker/Manager/ContainerManager.php
@@ -422,4 +422,26 @@ public function changes(Container $container)
 
         return $response->json();
     }
+
+    /**
+     * Export a container to a tar
+     *
+     * @param Container $container
+     *
+     * @throws \Docker\Exception\UnexpectedStatusCodeException
+     *
+     * @return \GuzzleHttp\Stream\Stream
+     */
+    public function export(Container $container)
+    {
+        $response = $this->client->get(['/containers/{id}/export', [
+            'id' => $container->getId()
+        ]]);
+
+        if ($response->getStatusCode() !== "200") {
+            throw UnexpectedStatusCodeException::fromResponse($response);
+        }
+
+        return $response->getBody();
+    }
 }
diff --git a/src/Docker/Tests/Manager/ContainerManagerTest.php b/src/Docker/Tests/Manager/ContainerManagerTest.php
@@ -383,4 +383,30 @@ public function testChanges()
         $this->assertEquals('/docker-php-test', $changes[0]['Path']);
         $this->assertEquals(1, $changes[0]['Kind']);
     }
+
+    public function testExport()
+    {
+        $container = new Container(['Image' => 'ubuntu:precise', 'Cmd' => ['touch', '/docker-php-test']]);
+        $manager = $this->getManager();
+        $manager->run($container);
+        $manager->wait($container);
+
+        $exportStream = $manager->export($container);
+
+        $this->assertInstanceOf('\GuzzleHttp\Stream\Stream', $exportStream);
+
+        $tarFileName  = tempnam(sys_get_temp_dir(), 'docker-php-export-test-');
+        $tarFile      = fopen($tarFileName, 'w+');
+
+        stream_copy_to_stream($exportStream->detach(), $tarFile);
+        fclose($tarFile);
+
+        exec('/usr/bin/env tar -tf '.$tarFileName, $output);
+
+        $this->assertContains('docker-php-test', $output);
+        $this->assertContains('.dockerinit', $output);
+
+        unlink($tarFileName);
+        $manager->remove($container);
+    }
 }
