fix: arex trace context clear (#163)

fix: override chileValue exclude arex-record-id

Author: lucas-myx

arex-agent-bootstrap/src/main/java/io/arex/agent/bootstrap/ctx/ArexThreadLocal.java

@@ -40,6 +40,15 @@ public final void remove() {
         super.remove();
     }
 
+    @Override
+    protected T childValue(T parentValue) {
+        // no need to copy arex-record-id, TraceTransmitter will capture and replay
+        if (parentValue instanceof String && ((String) parentValue).startsWith("AREX-")) {
+            return null;
+        }
+        return super.childValue(parentValue);
+    }
+
     public void superRemove() {
         super.remove();
     }

arex-agent-bootstrap/src/test/java/io/arex/agent/bootstrap/ctx/ArexThreadLocalTest.java

@@ -0,0 +1,22 @@
+package io.arex.agent.bootstrap.ctx;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ArexThreadLocalTest {
+
+    static final ArexThreadLocal<String> TRACE_CONTEXT = new ArexThreadLocal<>();
+
+    @ParameterizedTest
+    @CsvSource({
+            "AREX-mock, null",
+            "mock, mock"
+    })
+    void childValue(String request, String expect) {
+        String result = String.valueOf(TRACE_CONTEXT.childValue(request));
+        System.out.println(result);
+        assertEquals(expect, result);
+    }
+}