handle null drools object in configuration

Modified code to explicitly check for missing drools object, and
to not throw an exception during MDC setup.

Change-Id: Iac16f2fc46e2ffff03195985383b09b814fa4008
Issue-ID: POLICY-1082
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java b/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
index 5b8cb2f0..993c09c0 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/system/PolicyEngine.java
@@ -619,7 +619,7 @@ class PolicyEngineManager implements PolicyEngine {
         for (final ControllerConfiguration configController : configControllers) {
             MDCTransaction mdcTrans = MDCTransaction.newSubTransaction(null).setTargetEntity(configController.getName())
                     .setTargetServiceName(configController.getOperation())
-                    .setTargetVirtualEntity(configController.getDrools().toString());
+                    .setTargetVirtualEntity(""+configController.getDrools());
             try {
                 final PolicyController policyController = this.updatePolicyController(configController);
                 policyControllers.add(policyController);