diff --git a/skywalking-commons/skywalking-trace/src/main/java/com/a/eye/skywalking/trace/Span.java b/skywalking-commons/skywalking-trace/src/main/java/com/a/eye/skywalking/trace/Span.java
index ae1b5d49c..51f28adce 100644
--- a/skywalking-commons/skywalking-trace/src/main/java/com/a/eye/skywalking/trace/Span.java
+++ b/skywalking-commons/skywalking-trace/src/main/java/com/a/eye/skywalking/trace/Span.java
@@ -4,7 +4,6 @@ import com.a.eye.skywalking.api.util.StringUtil;
 import com.a.eye.skywalking.messages.ISerializable;
 import com.a.eye.skywalking.trace.messages.proto.KeyValue;
 import com.a.eye.skywalking.trace.messages.proto.LogDataMessage;
-import com.a.eye.skywalking.trace.messages.proto.SegmentMessage;
 import com.a.eye.skywalking.trace.messages.proto.SpanMessage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
diff --git a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/ContextCarrier.java b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/ContextCarrier.java
index 30d880d09..6af5cf7e3 100644
--- a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/ContextCarrier.java
+++ b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/ContextCarrier.java
@@ -1,5 +1,7 @@
 package com.a.eye.skywalking.api.context;
 
+import com.a.eye.skywalking.trace.Span;
+import com.a.eye.skywalking.trace.TraceSegment;
 import com.a.eye.skywalking.trace.TraceSegmentRef;
 import com.a.eye.skywalking.api.util.StringUtil;
 import java.io.Serializable;
@@ -10,7 +12,16 @@ import java.io.Serializable;
  *
  * Created by wusheng on 2017/2/17.
  */
-public class ContextCarrier extends TraceSegmentRef implements Serializable {
+public class ContextCarrier implements Serializable {
+    /**
+     * {@link TraceSegment#traceSegmentId}
+     */
+    private String traceSegmentId;
+
+    /**
+     * {@link Span#spanId}
+     */
+    private int spanId = -1;
 
     /**
      * Serialize this {@link ContextCarrier} to a {@link String},
@@ -51,4 +62,19 @@ public class ContextCarrier extends TraceSegmentRef implements Serializable {
         return !StringUtil.isEmpty(getTraceSegmentId()) && getSpanId() > -1;
     }
 
+    public String getTraceSegmentId() {
+        return traceSegmentId;
+    }
+
+    public int getSpanId() {
+        return spanId;
+    }
+
+    public void setTraceSegmentId(String traceSegmentId) {
+        this.traceSegmentId = traceSegmentId;
+    }
+
+    public void setSpanId(int spanId) {
+        this.spanId = spanId;
+    }
 }
diff --git a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/TracerContext.java b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/TracerContext.java
index 1b3edbe92..13860b6df 100644
--- a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/TracerContext.java
+++ b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/context/TracerContext.java
@@ -4,6 +4,7 @@ import com.a.eye.skywalking.api.conf.Config;
 import com.a.eye.skywalking.trace.Span;
 import com.a.eye.skywalking.trace.TraceSegment;
 import com.a.eye.skywalking.api.util.TraceIdGenerator;
+import com.a.eye.skywalking.trace.TraceSegmentRef;
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
@@ -124,7 +125,10 @@ public final class TracerContext {
      * ContextCarrier#deserialize(String)} called.
      */
     public void extract(ContextCarrier carrier) {
-        this.segment.ref(carrier);
+        TraceSegmentRef ref = new TraceSegmentRef();
+        ref.setTraceSegmentId(carrier.getTraceSegmentId());
+        ref.setSpanId(carrier.getSpanId());
+        this.segment.ref(ref);
     }
 
     /**
diff --git a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/RoutingKeyGenerator.java b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/RoutingKeyGenerator.java
deleted file mode 100644
index a335eaab8..000000000
--- a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/RoutingKeyGenerator.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.a.eye.skywalking.api.util;
-
-/**
- * Created data xin on 2016/12/4.
- */
-public class RoutingKeyGenerator {
-
-    public static int generate(String originData) {
-        char[] value = originData.toCharArray();
-        int h = 0;
-        if (h == 0 && value.length > 0) {
-            char val[] = value;
-
-            for (int i = 0; i < value.length; i++) {
-                h = 31 * h + val[i];
-            }
-        }
-        return h;
-    }
-}
diff --git a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/TraceIdGenerator.java b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/TraceIdGenerator.java
index fc3ac560c..cb253882c 100644
--- a/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/TraceIdGenerator.java
+++ b/skywalking-sniffer/skywalking-api/src/main/java/com/a/eye/skywalking/api/util/TraceIdGenerator.java
@@ -39,4 +39,8 @@ public final class TraceIdGenerator {
             Constants.SDK_VERSION + "", System.currentTimeMillis() + "", PROCESS_UUID + "",
             MachineInfo.getProcessNo() + "", Thread.currentThread().getId() + "", seq + "");
     }
+
+    public static void main(String[] args){
+        System.out.printf(generate());
+    }
 }