Fix parallel running initializing with empty redis

Author: yatsenkolesh

src/DB/RedisConnection.php

@@ -19,6 +19,11 @@ public function __construct(RedisConfigAccessor $redisConfigAccessor)
         $this->redisConfig = $redisConfigAccessor->getRedisConfig();
     }
 
+    public function isReady()
+    {
+        return $this->redisConfig !== null;
+    }
+
     public function getConnection()
     {
         if (isset(self::$connection)) {

src/Services/ExperimentsParallelRun/ParallelRunInitializer.php

@@ -5,6 +5,7 @@
 namespace Abrouter\Client\Services\ExperimentsParallelRun;
 
 use Abrouter\Client\DB\Managers\ParallelRunningStateManager;
+use Abrouter\Client\DB\RedisConnection;
 use Abrouter\Client\DB\RelatedUsersStore;
 use Abrouter\Client\DB\Repositories\ParallelRunningStateCachedRepository;
 
@@ -14,16 +15,24 @@ class ParallelRunInitializer
 
     private ParallelRunningStateManager $parallelRunningStateManager;
 
+    private RedisConnection $redisConnection;
+
     public function __construct(
         ParallelRunningStateCachedRepository $parallelRunningStateCachedRepository,
-        ParallelRunningStateManager $parallelRunningStateManager
+        ParallelRunningStateManager $parallelRunningStateManager,
+        RedisConnection $redisConnection
     ) {
         $this->parallelRunningStateCachedRepository = $parallelRunningStateCachedRepository;
         $this->parallelRunningStateManager = $parallelRunningStateManager;
+        $this->redisConnection = $redisConnection;
     }
 
     public function initializeIfNot(): bool
     {
+        if (!$this->redisConnection->isReady()) {
+            return false;
+        }
+
         //if parallel running ready to serve
         if ($this->parallelRunningStateCachedRepository->isReady()) {
             return true;