Added recreate client on YDB_UNAVAILABLE

Author: Илья

src/Traits/RequestTrait.php

@@ -236,6 +236,19 @@ protected function processResponse($service, $method, $response, $resultClass)
             $this->resetLastRequest();
 
             return $result;
+        } elseif ($statusCode == StatusCode::UNAVAILABLE){
+            if ($this->ydb->needDiscovery()){
+                try{
+                    $this->ydb->discover();
+                }catch (\Exception $e){}
+            }
+            $endpoint = $this->ydb->endpoint();
+            if ($this->ydb->needDiscovery() && count($this->ydb->cluster()->all()) > 0){
+                $endpoint = $this->ydb->cluster()->all()[array_rand($this->ydb->cluster()->all())]->endpoint();
+            }
+            $this->client = new $this->client($endpoint,[
+                'credentials' => $this->ydb->iam()->getCredentials()
+            ]);
         }
         $statusName = StatusCode::name($statusCode);