diff --git a/google_vision.module b/google_vision.module
index b742912..04b7cbf 100755
--- a/google_vision.module
+++ b/google_vision.module
@@ -7,6 +7,7 @@
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\field\FieldConfigInterface;
 use Drupal\google_vision\Connector;
+use Drupal\google_vision\ImageRequest;
 
 /**
  * Implements hook_entity_presave().
@@ -68,7 +69,7 @@ function google_vision_file_entity_add_labels($file, $field, $vid) {
   // Try to retrieve file URI.
   $file_uri = $file->getFileUri();
   if ($filepath = \Drupal::service('file_system')->realpath($file_uri)) {
-    $data = Connector::makeRequestForLabels($filepath);
+    $data = Connector::makeRequest($filepath);
     // If we have retrieved labels.
     if (!empty($data['responses'][0]['labelAnnotations'])) {
       $labels = [];
diff --git a/google_vision.services.yml b/google_vision.services.yml
new file mode 100644
index 0000000..8ece2f3
--- /dev/null
+++ b/google_vision.services.yml
@@ -0,0 +1,3 @@
+services:
+  google_vision.api:
+    class: Drupal\google_vision\ImageRequest
diff --git a/src/Connector.php b/src/Connector.php
index e4507d6..0463801 100755
--- a/src/Connector.php
+++ b/src/Connector.php
@@ -9,54 +9,39 @@ namespace Drupal\google_vision;
 
 use Drupal\Component\Serialization\Json;
 
-class Connector {
+use Drupal\google_vision\ImageRequest;
 
+use Drupal\Core\Controller\ControllerBase;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+use Symfony\Component\HttpFoundation\Response;
+
+class Connector extends ControllerBase {
+
+  protected $imageRequest;
   /**
+   * Constructor
+   */
+  public function __construct(ImageRequest $imageRequest) {
+
+    $this->imageRequest = $imageRequest;
+  }
+  /*
    * Function to retrieve labels for given image.
    */
-  public static function makeRequestForLabels($filepath) {
-    $config = \Drupal::getContainer()->get('config.factory')->getEditable('google_vision.settings');
-    $api_key = $config->get('api_key');
-    if (!$api_key) {
-      return FALSE;
-    }
-
-    // It looks pretty dirty. I hope that in future it will be implemented in Google SDK
-    // and we will be able to avoid this approach.
-    $encoded_image = base64_encode(file_get_contents($filepath));
-
-    // Prepare JSON.
-    $data = '{
-      "requests":[
-        {
-          "image":{
-            "content":"' . $encoded_image . '"
-          },
-          "features":[
-            {
-              "type":"LABEL_DETECTION",
-              "maxResults":5
-            }
-          ]
-        }
-      ]
-    }';
-
-    $ch = curl_init('https://vision.googleapis.com/v1/images:annotate?key=' . $api_key);
-    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
-    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
-    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
-        'Content-Type: application/json',
-        'Content-Length: ' . strlen($data),
-      )
-    );
-
-    $result = Json::decode(curl_exec($ch));
-    if (empty($result['error'])) {
-      return $result;
-    }
-    return FALSE;
+  public static function makeRequest($filepath) {
+
+    $req = $this->imageRequest->makeRequestForLabels($filepath);
+
+    //return new Response($req);
+    return $req;
+  }
+
+  public static function create(ContainerInterface $container) {
+    $imageRequest = $container->get('google_vision.api');
+
+    return new static($imageRequest);
   }
 
 }
diff --git a/src/ImageRequest.php b/src/ImageRequest.php
new file mode 100644
index 0000000..e143df4
--- /dev/null
+++ b/src/ImageRequest.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * @file
+ * Google vision connector.
+ */
+
+namespace Drupal\google_vision;
+
+use Drupal\Component\Serialization\Json;
+
+class ImageRequest {
+
+  /**
+   * Function to retrieve labels for given image.
+   */
+  public function makeRequestForLabels($filepath) {
+    $config = \Drupal::getContainer()->get('config.factory')->getEditable('google_vision.settings');
+    $api_key = $config->get('api_key');
+    if (!$api_key) {
+      return FALSE;
+    }
+
+    // It looks pretty dirty. I hope that in future it will be implemented in Google SDK
+    // and we will be able to avoid this approach.
+    $encoded_image = base64_encode(file_get_contents($filepath));
+
+    // Prepare JSON.
+    $data = '{
+      "requests":[
+        {
+          "image":{
+            "content":"' . $encoded_image . '"
+          },
+          "features":[
+            {
+              "type":"LABEL_DETECTION",
+              "maxResults":5
+            }
+          ]
+        }
+      ]
+    }';
+
+    $ch = curl_init('https://vision.googleapis.com/v1/images:annotate?key=' . $api_key);
+    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
+        'Content-Type: application/json',
+        'Content-Length: ' . strlen($data),
+      )
+    );
+
+    $result = Json::decode(curl_exec($ch));
+    if (empty($result['error'])) {
+      return $result;
+    }
+    return FALSE;
+  }
+
+}