Modified Decision API to accept query parameters and abbreviate Monitor decision results

Issue-ID: POLICY-2126
Change-Id: I18d50a8746ede792ec9507ab98125383c5914ba1
Signed-off-by: HOCKLA <ah999m@att.com>

2 files changed, 66 insertions, 5 deletions

diff --git a/applications/monitoring/src/main/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplication.java b/applications/monitoring/src/main/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplication.java
index 1591b919..3c9a4fba 100644
--- a/applications/monitoring/src/main/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplication.java
+++ b/applications/monitoring/src/main/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplication.java
@@ -22,14 +22,22 @@
 
 package org.onap.policy.xacml.pdp.application.monitoring;
 
+import com.att.research.xacml.api.Request;
+import com.att.research.xacml.api.Response;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-
+import java.util.Map;
+import java.util.Map.Entry;
+import org.apache.commons.lang3.tuple.Pair;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.decisions.concepts.DecisionResponse;
 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslator;
 import org.onap.policy.pdp.xacml.application.common.std.StdCombinedPolicyResultsTranslator;
 import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServiceProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This is the engine class that manages the instance of the XACML PDP engine.
@@ -41,6 +49,7 @@ import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServi
  *
  */
 public class MonitoringPdpApplication extends StdXacmlApplicationServiceProvider {
+    private static final Logger LOGGER = LoggerFactory.getLogger(MonitoringPdpApplication.class);
 
     private static final String ONAP_MONITORING_BASE_POLICY_TYPE = "onap.Monitoring";
     private static final String ONAP_MONITORING_CDAP = "onap.policies.monitoring.cdap.tca.hi.lo.app";
@@ -96,8 +105,60 @@ public class MonitoringPdpApplication extends StdXacmlApplicationServiceProvider
     }
 
     @Override
+    public Pair<DecisionResponse, Response> makeDecision(DecisionRequest request,
+            Map<String, String[]> requestQueryParams) {
+        //
+        // Convert to a XacmlRequest
+        //
+        Request xacmlRequest = this.getTranslator().convertRequest(request);
+        //
+        // Now get a decision
+        //
+        Response xacmlResponse = this.xacmlDecision(xacmlRequest);
+        //
+        // Convert to a DecisionResponse
+        //
+        DecisionResponse decisionResponse = this.getTranslator().convertResponse(xacmlResponse);
+        //
+        // Abbreviate results if needed
+        //
+        if (checkAbbreviateResults(requestQueryParams) && decisionResponse.getPolicies() != null
+                && !decisionResponse.getPolicies().isEmpty()) {
+            LOGGER.info("Abbreviating decision results {}", decisionResponse);
+            for (Entry<String, Object> entry : decisionResponse.getPolicies().entrySet()) {
+                if (entry.getValue() instanceof Map) {
+                    @SuppressWarnings("unchecked")
+                    Map<String, Object> policy = (Map<String, Object>) entry.getValue();
+                    policy.remove("properties");
+                    policy.remove("name");
+                    policy.remove("version");
+                }
+            }
+        }
+        return Pair.of(decisionResponse, xacmlResponse);
+    }
+
+    @Override
     protected ToscaPolicyTranslator getTranslator(String type) {
         return translator;
     }
 
+    /**
+     * Checks the query parameters to determine whether the decision results should be abbreviated.
+     *
+     * @param queryParams - http request query parameters
+     */
+    private boolean checkAbbreviateResults(Map<String, String[]> queryParams) {
+        if (queryParams != null && !queryParams.isEmpty()) {
+            // Check if query params contains "abbrev" flag
+            if (queryParams.containsKey("abbrev")) {
+                return Arrays.asList(queryParams.get("abbrev")).contains("true");
+            } else {
+                LOGGER.info("Unsupported query param for Monitoring application: {}", queryParams);
+                return false;
+            }
+        }
+        LOGGER.info("Query parameters empty");
+        return false;
+    }
 }
diff --git a/applications/monitoring/src/test/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplicationTest.java b/applications/monitoring/src/test/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplicationTest.java
index a92ba6f8..1cba4967 100644
--- a/applications/monitoring/src/test/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplicationTest.java
+++ b/applications/monitoring/src/test/java/org/onap/policy/xacml/pdp/application/monitoring/MonitoringPdpApplicationTest.java
@@ -156,7 +156,7 @@ public class MonitoringPdpApplicationTest {
         //
         // Ask for a decision
         //
-        Pair<DecisionResponse, Response> decision = service.makeDecision(requestSinglePolicy);
+        Pair<DecisionResponse, Response> decision = service.makeDecision(requestSinglePolicy, null);
         LOGGER.info("Decision {}", decision);
 
         assertThat(decision.getKey()).isNotNull();
@@ -178,7 +178,7 @@ public class MonitoringPdpApplicationTest {
         //
         // Ask for a decision
         //
-        Pair<DecisionResponse, Response> decision = service.makeDecision(requestSinglePolicy);
+        Pair<DecisionResponse, Response> decision = service.makeDecision(requestSinglePolicy, null);
         LOGGER.info("Decision {}", decision);
 
         assertThat(decision.getKey()).isNotNull();
@@ -190,7 +190,7 @@ public class MonitoringPdpApplicationTest {
         //
         // Ask for a decision based on policy-type
         //
-        decision = service.makeDecision(requestPolicyType);
+        decision = service.makeDecision(requestPolicyType, null);
         LOGGER.info("Decision {}", decision);
 
         assertThat(decision.getKey()).isNotNull();
@@ -209,7 +209,7 @@ public class MonitoringPdpApplicationTest {
         //
         // Ask for a decision
         //
-        decision = service.makeDecision(requestSinglePolicy);
+        decision = service.makeDecision(requestSinglePolicy, null);
         LOGGER.info("Decision {}", decision.getKey());
 
         assertThat(decision.getKey()).isNotNull();