From d2fe1b77ae33b5a4b4bff4a82ddc0fc27d3f59d1 Mon Sep 17 00:00:00 2001
From: wusheng <wu.sheng@foxmail.com>
Date: Sun, 4 Jun 2017 20:11:02 +0800
Subject: [PATCH] Revert "Revert "Add new trace segment for improving sampling
 performance.""

This reverts commit 5b853ec38bdef9ebdb7af604dade647e77f8f3e0.
---
 .../org/skywalking/apm/trace/AbstractTraceSegment.java     | 7 +++++++
 .../main/java/org/skywalking/apm/trace/TraceSegment.java   | 2 +-
 .../org/skywalking/apm/trace/UnsampleTraceSegment.java     | 7 +++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java
 create mode 100644 apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java

diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java
new file mode 100644
index 000000000..7495792e5
--- /dev/null
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/AbstractTraceSegment.java
@@ -0,0 +1,7 @@
+package org.skywalking.apm.trace;
+
+/**
+ * @author wusheng
+ */
+public interface AbstractTraceSegment {
+}
diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
index ab79cc159..9a16e383f 100644
--- a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/TraceSegment.java
@@ -19,7 +19,7 @@ import java.util.List;
  * <p>
  * Created by wusheng on 2017/2/17.
  */
-public class TraceSegment {
+public class TraceSegment implements AbstractTraceSegment{
     private static final String ID_TYPE = "Segment";
 
     /**
diff --git a/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java
new file mode 100644
index 000000000..2bc774745
--- /dev/null
+++ b/apm-commons/apm-trace/src/main/java/org/skywalking/apm/trace/UnsampleTraceSegment.java
@@ -0,0 +1,7 @@
+package org.skywalking.apm.trace;
+
+/**
+ * @author wusheng
+ */
+public class UnsampleTraceSegment {
+}