Fix guard payload

Fix guard payload nullpointerException when guard list is empty or null

Issue-ID: CLAMP-303
Change-Id: I6f714a877036cbc531dd35505202dde227cc224a
Signed-off-by: sebdet <sebastien.determe@intl.att.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/src/main/java/org/onap/clamp/policy/operational/OperationalPolicy.java b/src/main/java/org/onap/clamp/policy/operational/OperationalPolicy.java
index 1859a4d6..1e35ad6c 100644
--- a/src/main/java/org/onap/clamp/policy/operational/OperationalPolicy.java
+++ b/src/main/java/org/onap/clamp/policy/operational/OperationalPolicy.java
@@ -183,18 +183,20 @@ public class OperationalPolicy implements Serializable, Policy {
 
     /**
      * Return a map containing all Guard policies indexed by Guard policy Name.
-     * 
+     *
      * @return The Guards map
      */
     public Map<String, String> createGuardPolicyPayloads() {
         Map<String, String> result = new HashMap<>();
 
-        JsonObject guard = new JsonObject();
         JsonElement guardsList = this.getConfigurationsJson().get("guard_policies");
-        for (Entry<String, JsonElement> guardElem : guardsList.getAsJsonObject().entrySet()) {
-            guard.addProperty("policy-id", guardElem.getKey());
-            guard.add("contents", guardElem.getValue());
-            result.put(guardElem.getKey(), new GsonBuilder().create().toJson(guard));
+        if (guardsList != null) {
+            for (Entry<String, JsonElement> guardElem : guardsList.getAsJsonObject().entrySet()) {
+                JsonObject guard = new JsonObject();
+                guard.addProperty("policy-id", guardElem.getKey());
+                guard.add("contents", guardElem.getValue());
+                result.put(guardElem.getKey(), new GsonBuilder().create().toJson(guard));
+            }
         }
         return result;
     }