diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v1/x/TraceIdPatternConverterActivation.java b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v1/x/TraceIdPatternConverterActivation.java
index 4e13bd648d9ffeca0925ebf092be1063699f1227..37a7246db59c062c289585b3b8a63c9bbbcaa9e5 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v1/x/TraceIdPatternConverterActivation.java
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v1/x/TraceIdPatternConverterActivation.java
@@ -38,12 +38,17 @@ import static org.apache.skywalking.apm.agent.core.plugin.match.NameMatch.byName
  * @author wusheng
  */
 public class TraceIdPatternConverterActivation extends ClassInstanceMethodsEnhancePluginDefine {
+
+    public static final String ENHANCE_CLASS = "org.apache.skywalking.apm.toolkit.log.log4j.v1.x.TraceIdPatternConverter";
+    public static final String INTERCEPT_CLASS = "org.apache.skywalking.apm.toolkit.activation.log.log4j.v1.x.PrintTraceIdInterceptor";
+    public static final String ENHANCE_METHOD = "convert";
+
     /**
      * @return the target class, which needs active.
      */
     @Override
     protected ClassMatch enhanceClass() {
-        return byName("TraceIdPatternConverter");
+        return byName(ENHANCE_CLASS);
     }
 
     /**
@@ -64,12 +69,12 @@ public class TraceIdPatternConverterActivation extends ClassInstanceMethodsEnhan
             new InstanceMethodsInterceptPoint() {
                 @Override
                 public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return named("convert");
+                    return named(ENHANCE_METHOD);
                 }
 
                 @Override
                 public String getMethodsInterceptor() {
-                    return "PrintTraceIdInterceptor";
+                    return INTERCEPT_CLASS;
                 }
 
                 @Override public boolean isOverrideArgs() {
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v2/x/Log4j2OutputAppenderActivation.java b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v2/x/Log4j2OutputAppenderActivation.java
index fc337bdf0eed99a75fb9b6c1df5361a3317b6d82..fcc98f6385174230c1c8e96a4ded946de0b78516 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v2/x/Log4j2OutputAppenderActivation.java
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/log4j/v2/x/Log4j2OutputAppenderActivation.java
@@ -37,12 +37,17 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
  * @author wusheng
  */
 public class Log4j2OutputAppenderActivation extends ClassStaticMethodsEnhancePluginDefine {
+
+    public static final String ENHANCE_CLASS = "org.apache.skywalking.apm.toolkit.log.log4j.v2.x.Log4j2OutputAppender";
+    public static final String INTERCEPT_CLASS = "org.apache.skywalking.apm.toolkit.activation.log.log4j.v2.x.PrintTraceIdInterceptor";
+    public static final String ENHANCE_METHOD = "append";
+
     /**
      * @return the target class, which needs active.
      */
     @Override
     protected ClassMatch enhanceClass() {
-        return NameMatch.byName("org.apache.skywalking.apm.toolkit.log.log4j.v2.x.Log4j2OutputAppender");
+        return NameMatch.byName(ENHANCE_CLASS);
     }
 
     /**
@@ -55,12 +60,12 @@ public class Log4j2OutputAppenderActivation extends ClassStaticMethodsEnhancePlu
             new StaticMethodsInterceptPoint() {
                 @Override
                 public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return named("append");
+                    return named(ENHANCE_METHOD);
                 }
 
                 @Override
                 public String getMethodsInterceptor() {
-                    return "PrintTraceIdInterceptor";
+                    return INTERCEPT_CLASS;
                 }
 
                 @Override public boolean isOverrideArgs() {
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/LogbackPatternConverterActivation.java b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/LogbackPatternConverterActivation.java
index d3c5992669ccd39d4faec44a8828e7cd4a01799b..57c56736996de48f4eae876470ab67745c5a6ad4 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/LogbackPatternConverterActivation.java
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/LogbackPatternConverterActivation.java
@@ -39,12 +39,17 @@ import static org.apache.skywalking.apm.agent.core.plugin.match.NameMatch.byName
  * Created by wusheng on 2016/12/7.
  */
 public class LogbackPatternConverterActivation extends ClassInstanceMethodsEnhancePluginDefine {
+
+    public static final String INTERCEPT_CLASS = "org.apache.skywalking.apm.toolkit.activation.log.logback.v1.x.PrintTraceIdInterceptor";
+    public static final String ENHANCE_CLASS = "org.apache.skywalking.apm.toolkit.log.logback.v1.x.LogbackPatternConverter";
+    public static final String ENHANCE_METHOD = "convert";
+
     /**
      * @return the target class, which needs active.
      */
     @Override
     protected ClassMatch enhanceClass() {
-        return byName("org.apache.skywalking.apm.toolkit.log.logback.v1.x.LogbackPatternConverter");
+        return byName(ENHANCE_CLASS);
     }
 
     /**
@@ -65,12 +70,12 @@ public class LogbackPatternConverterActivation extends ClassInstanceMethodsEnhan
             new InstanceMethodsInterceptPoint() {
                 @Override
                 public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return named("convert");
+                    return named(ENHANCE_METHOD);
                 }
 
                 @Override
                 public String getMethodsInterceptor() {
-                    return "PrintTraceIdInterceptor";
+                    return INTERCEPT_CLASS;
                 }
 
                 @Override public boolean isOverrideArgs() {
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/mdc/MDCConverterActivation.java b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/mdc/MDCConverterActivation.java
index 202486bc91ad25215a02112d34a7033b6f34cda6..dea164bab29433703913ca7442008b9d6dca1513 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/mdc/MDCConverterActivation.java
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/log/logback/v1/x/mdc/MDCConverterActivation.java
@@ -34,6 +34,10 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
  */
 public class MDCConverterActivation extends ClassInstanceMethodsEnhancePluginDefine {
 
+    public static final String INTERCEPT_CLASS = "org.apache.skywalking.apm.toolkit.activation.log.logback.v1.x.mdc.PrintMDCTraceIdInterceptor";
+    public static final String ENHANCE_CLASS = "org.apache.skywalking.apm.toolkit.log.logback.v1.x.mdc.LogbackMDCPatternConverter";
+    public static final String ENHANCE_METHOD = "convertTID";
+
     @Override
     protected ConstructorInterceptPoint[] getConstructorsInterceptPoints() {
         return null;
@@ -45,12 +49,12 @@ public class MDCConverterActivation extends ClassInstanceMethodsEnhancePluginDef
             new InstanceMethodsInterceptPoint() {
                 @Override
                 public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return named("convertTID");
+                    return named(ENHANCE_METHOD);
                 }
 
                 @Override
                 public String getMethodsInterceptor() {
-                    return "PrintMDCTraceIdInterceptor";
+                    return INTERCEPT_CLASS;
                 }
 
                 @Override public boolean isOverrideArgs() {
@@ -62,6 +66,6 @@ public class MDCConverterActivation extends ClassInstanceMethodsEnhancePluginDef
 
     @Override
     protected ClassMatch enhanceClass() {
-        return NameMatch.byName("org.apache.skywalking.apm.toolkit.log.logback.v1.x.mdc.LogbackMDCPatternConverter");
+        return NameMatch.byName(ENHANCE_CLASS);
     }
 }
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/trace/TraceContextActivation.java b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/trace/TraceContextActivation.java
index 3014248935c6fff0af416fd08e6581360dc0729e..3d04f0914defae4df26ddaf85f5eff5d4fc2a953 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/trace/TraceContextActivation.java
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/trace/TraceContextActivation.java
@@ -37,12 +37,17 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
  * Created by xin on 2016/12/15.
  */
 public class TraceContextActivation extends ClassStaticMethodsEnhancePluginDefine {
+
+    public static final String INTERCEPT_CLASS = "org.apache.skywalking.apm.toolkit.activation.trace.TraceContextInterceptor";
+    public static final String ENHANCE_CLASS = "org.apache.skywalking.apm.toolkit.trace.TraceContext";
+    public static final String ENHANCE_METHOD = "traceId";
+
     /**
      * @return the target class, which needs active.
      */
     @Override
     protected ClassMatch enhanceClass() {
-        return NameMatch.byName("TraceContext");
+        return NameMatch.byName(ENHANCE_CLASS);
     }
 
     /**
@@ -55,12 +60,12 @@ public class TraceContextActivation extends ClassStaticMethodsEnhancePluginDefin
             new StaticMethodsInterceptPoint() {
                 @Override
                 public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return named("traceId");
+                    return named(ENHANCE_METHOD);
                 }
 
                 @Override
                 public String getMethodsInterceptor() {
-                    return "TraceContextInterceptor";
+                    return INTERCEPT_CLASS;
                 }
 
                 @Override public boolean isOverrideArgs() {