Optimize spring-cloud-gateway 2.1.x, 3.x witness class. (#610)

Author: weixiang1862

CHANGES.md

@@ -11,6 +11,7 @@ Release Notes.
 * Fix an issue with the httpasyncclient component where the isError state is incorrect.
 * Support customization for the length limitation of string configurations
 * Add max length configurations in `agent.config` file for service_name and instance_name
+* Optimize spring-cloud-gateway 2.1.x, 3.x witness class.
 
 #### Documentation
 

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v21x/define/AbstractGateway210EnhancePluginDefine.java

@@ -24,6 +24,7 @@ public abstract class AbstractGateway210EnhancePluginDefine extends ClassInstanc
     @Override
     protected String[] witnessClasses() {
         return new String[] {
+            "org.springframework.cloud.gateway.filter.LoadBalancerClientFilter",
             "org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"
         };
     }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v21x/define/DispatcherHandlerInstrumentation.java

@@ -23,6 +23,7 @@ public class DispatcherHandlerInstrumentation extends org.apache.skywalking.apm.
     @Override
     protected String[] witnessClasses() {
         return new String[] {
+            "org.springframework.cloud.gateway.filter.LoadBalancerClientFilter",
             "org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"
         };
     }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.1.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v21x/define/ServerWebExchangeInstrumentation.java

@@ -23,6 +23,7 @@ public class ServerWebExchangeInstrumentation extends org.apache.skywalking.apm.
     @Override
     protected String[] witnessClasses() {
         return new String[] {
+            "org.springframework.cloud.gateway.filter.LoadBalancerClientFilter",
             "org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"
         };
     }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v3x/define/AbstractGatewayV3EnhancePluginDefine.java

@@ -27,6 +27,6 @@ public abstract class AbstractGatewayV3EnhancePluginDefine extends ClassInstance
 
     @Override
     protected String[] witnessClasses() {
-        return new String[]{"org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"};
+        return new String[]{"org.springframework.cloud.gateway.config.GatewayLoadBalancerProperties"};
     }
 }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v3x/define/DispatcherHandlerInstrumentation.java

@@ -20,13 +20,13 @@
 
 /**
  * This class is used for enable {@link org.apache.skywalking.apm.plugin.spring.webflux.v5.define.DispatcherHandlerInstrumentation}
- * class when {@link org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor} class is exist
+ * class when {@link org.springframework.cloud.gateway.config.GatewayLoadBalancerProperties} class is exist
  */
 public class DispatcherHandlerInstrumentation extends
         org.apache.skywalking.apm.plugin.spring.webflux.v5.define.DispatcherHandlerInstrumentation {
 
     @Override
     protected String[] witnessClasses() {
-        return new String[]{"org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"};
+        return new String[]{"org.springframework.cloud.gateway.config.GatewayLoadBalancerProperties"};
     }
 }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v3x/define/ServerWebExchangeInstrumentation.java

@@ -20,13 +20,13 @@
 
 /**
  * This class is used for enable {@link org.apache.skywalking.apm.plugin.spring.webflux.v5.define.ServerWebExchangeInstrumentation}
- * when {@link org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor} class is exist.
+ * when {@link org.springframework.cloud.gateway.config.GatewayLoadBalancerProperties} class is exist.
  */
 public class ServerWebExchangeInstrumentation extends
         org.apache.skywalking.apm.plugin.spring.webflux.v5.define.ServerWebExchangeInstrumentation {
 
     @Override
     protected String[] witnessClasses() {
-        return new String[]{"org.springframework.cloud.gateway.config.GatewayEnvironmentPostProcessor"};
+        return new String[]{"org.springframework.cloud.gateway.config.GatewayLoadBalancerProperties"};
     }
 }