Fixed thread safety issue about KafkaOptions. #89

src/DotNetCore.CAP.Kafka/KafkaConsumerClient.cs

@@ -65,6 +65,8 @@ namespace DotNetCore.CAP.Kafka
         #region private methods
 
         private void InitKafkaClient()
+        {
+            lock (_kafkaOptions)
             {
                 _kafkaOptions.MainConfig["group.id"] = _groupId;
 
@@ -74,7 +76,7 @@ namespace DotNetCore.CAP.Kafka
                 _consumerClient.OnMessage += ConsumerClient_OnMessage;
                 _consumerClient.OnError += ConsumerClient_OnError;
             }
-
+        }
 
         private void ConsumerClient_OnConsumeError(object sender, Message e)
         {