Merge pull request #118 from lepdou/2020/fix_circuitbreak_400_bug

fix circuitbreaker http code greater than 400 as fail response bug

CHANGELOG.md

@@ -5,4 +5,5 @@
 - [feat:add custom label resolver spi for rate limit](https://github.com/Tencent/spring-cloud-tencent/pull/107)
 - [feat:fix discovery weight param not set to register request bug](https://github.com/Tencent/spring-cloud-tencent/pull/104)
 - [Bugfix: fix causing cpu 100% when set ScheduledThreadPoolExecutor corePoolSize=0](https://github.com/Tencent/spring-cloud-tencent/pull/101)
+- [Bugfix: fix circuitbreaker http code greater than 400 as fail response bug](https://github.com/Tencent/spring-cloud-tencent/pull/118)
 - [Feat: optimize router dependency](https://github.com/Tencent/spring-cloud-tencent/pull/115)

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/feign/PolarisFeignClient.java

@@ -56,8 +56,8 @@ public class PolarisFeignClient implements Client {
 		final ServiceCallResult resultRequest = createServiceCallResult(request);
 		try {
 			Response response = delegate.execute(request, options);
-			// HTTP code greater than 400 is an exception
+			// HTTP code greater than 500 is an exception
-			if (response.status() >= 400) {
+			if (response.status() >= 500) {
 				resultRequest.setRetStatus(RetStatus.RetFail);
 			}
 			return response;