[CXF-7354] Using the marker to log the events, patch from David J. M.…

… Karlsen applied, This closes #272

rt/features/logging/src/main/java/org/apache/cxf/ext/logging/slf4j/Slf4jEventSender.java

@@ -28,6 +28,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.MDC;
+import org.slf4j.MarkerFactory;
 
 public class Slf4jEventSender implements LogEventSender {
 
@@ -53,7 +54,8 @@ public void send(LogEvent event) {
                 put(keys, "FullContentFile", event.getFullContentFile().getAbsolutePath());
             }
             put(keys, "Headers", event.getHeaders().toString());
-            log.info(getLogMessage(event));
+            log.info(MarkerFactory.getMarker(event.getServiceName() != null ? "SOAP" : "REST"), 
+                     getLogMessage(event));
         } finally {
             for (String key : keys) {
                 MDC.remove(key);