Refactor ContextManager#continued

apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/context/ContextManager.java

@@ -153,7 +153,7 @@ public class ContextManager implements TracingContextListener, BootService, Igno
         if (snapshot == null) {
             throw new IllegalArgumentException("ContextSnapshot can't be null.");
         }
-        if (snapshot.isValid() && !snapshot.getTraceSegmentId().equals(get().capture().getTraceSegmentId())) {
+        if (snapshot.isValid() && !snapshot.isFromCurrent()) {
             get().continued(snapshot);
         }
     }

apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/context/ContextSnapshot.java

@@ -113,4 +113,8 @@ public class ContextSnapshot {
     public int getEntryApplicationInstanceId() {
         return entryApplicationInstanceId;
     }
+    
+    public boolean isFromCurrent() {
+        return traceSegmentId.equals(ContextManager.capture().getTraceSegmentId());
+    }
 }