Fix different sonar issues

Added exxception logging,
added tests.

Change-Id: Ia878030d13570b1445e9b077fce77ca387e69f9a
Issue-ID: SDC-2711
Signed-off-by: Dmitry Puzikov <d.puzikov2@partner.samsung.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ContextListener.java b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ContextListener.java
index 9431e12585..520852ee1f 100644
--- a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ContextListener.java
+++ b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ContextListener.java
@@ -24,10 +24,14 @@ import javax.servlet.ServletContextEvent;
 import javax.servlet.ServletContextListener;
 import javax.servlet.annotation.WebListener;
 import org.onap.config.api.ConfigurationManager;
+import org.openecomp.sdc.logging.api.Logger;
+import org.openecomp.sdc.logging.api.LoggerFactory;
 
 @WebListener
 public class ContextListener implements ServletContextListener {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(ContextListener.class);
+
     @Override
     public void contextInitialized(ServletContextEvent arg0) {
         ConfigurationManager.lookup();
@@ -38,7 +42,7 @@ public class ContextListener implements ServletContextListener {
         try {
             ManagementFactory.getPlatformMBeanServer().unregisterMBean(new ObjectName(MBEAN_NAME));
         } catch (Exception exception) {
-            exception.printStackTrace();
+            LOGGER.error("Unregistering bean '{}' failed.", MBEAN_NAME, exception);
         }
     }
 }