From 745e1043ffa414ebe4e60c96aeb58ef62ab541e6 Mon Sep 17 00:00:00 2001
From: "Xin,Zhang" <zhangxin@apache.org>
Date: Sun, 6 Jan 2019 17:21:53 +0800
Subject: [PATCH] Fix ClassCastException (#2125)

---
 .../apm/plugin/hystrix/v1/SWExecutionHookWrapper.java  | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/hystrix/v1/SWExecutionHookWrapper.java b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/hystrix/v1/SWExecutionHookWrapper.java
index fbe0022a0..fe7cb3c6d 100644
--- a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/hystrix/v1/SWExecutionHookWrapper.java
+++ b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/hystrix/v1/SWExecutionHookWrapper.java
@@ -39,6 +39,11 @@ public class SWExecutionHookWrapper extends HystrixCommandExecutionHook {
 
     @Override
     public <T> void onStart(HystrixInvokable<T> commandInstance) {
+        if (!(commandInstance instanceof EnhancedInstance)) {
+            actual.onStart(commandInstance);
+            return;
+        }
+
         EnhancedInstance enhancedInstance = (EnhancedInstance)commandInstance;
         EnhanceRequireObjectCache enhanceRequireObjectCache = (EnhanceRequireObjectCache)enhancedInstance.getSkyWalkingDynamicField();
         if (ContextManager.isActive()) {
@@ -166,6 +171,11 @@ public class SWExecutionHookWrapper extends HystrixCommandExecutionHook {
     }
 
     @Override public <T> void onStart(HystrixCommand<T> commandInstance) {
+        if (!(commandInstance instanceof EnhancedInstance)) {
+            actual.onStart(commandInstance);
+            return;
+        }
+
         EnhancedInstance enhancedInstance = (EnhancedInstance)commandInstance;
         EnhanceRequireObjectCache enhanceRequireObjectCache = (EnhanceRequireObjectCache)enhancedInstance.getSkyWalkingDynamicField();
         if (ContextManager.isActive()) {