Remove dynamic log level after request

Change-Id: Ic59696b197392ecabe29665d822d12c838cdbeed

Author: ChristophEichhorn

cf-java-logging-support-servlet/src/main/java/com/sap/hcp/cf/logging/servlet/dynlog/DynamicLogLevelProcessor.java

@@ -51,4 +51,8 @@ public void copyDynamicLogLevelToMDC(HttpServletRequest httpRequest) {
             }
         }
     }
+
+    public void removeDynamicLogLevelFromMDC() {
+        MDC.remove(DynamicLogLevelHelper.MDC_DYNAMIC_LOG_LEVEL_KEY);
+    }
 }

cf-java-logging-support-servlet/src/main/java/com/sap/hcp/cf/logging/servlet/filter/RequestLoggingFilter.java

@@ -149,6 +149,10 @@ private void doFilterRequest(HttpServletRequest httpRequest, HttpServletResponse
              */
         } finally {
             rr.close();
+
+            if (dynamicLogLevelProcessor != null) {
+                dynamicLogLevelProcessor.removeDynamicLogLevelFromMDC();
+            }
         }
     }
 

cf-java-logging-support-servlet/src/test/java/com/sap/hcp/cf/logging/servlet/dynlog/DynamicLogLevelProcessorTest.java

@@ -55,4 +55,11 @@ public void testCopyDynamicLogLevelToMDC() throws Exception {
         processor.copyDynamicLogLevelToMDC(httpRequest);
         assertEquals("TRACE", MDC.get(DynamicLogLevelHelper.MDC_DYNAMIC_LOG_LEVEL_KEY));
     }
+
+    @Test
+    public void testDeleteDynamicLogLevelFromMDC() throws Exception {
+        processor.copyDynamicLogLevelToMDC(httpRequest);
+        processor.removeDynamicLogLevelFromMDC();
+        assertEquals(null, MDC.get(DynamicLogLevelHelper.MDC_DYNAMIC_LOG_LEVEL_KEY));
+    }
 }