--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PAP-REST
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.policy.pap.xacml.rest.service;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.EntityManager;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.json.JSONObject;
+import org.onap.policy.common.logging.eelf.MessageCodes;
+import org.onap.policy.common.logging.eelf.PolicyLogger;
+import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+import org.onap.policy.xacml.api.pap.OnapPDPGroup;
+
+import com.att.research.xacml.api.pap.PDPPolicy;
+
+public class MetricService {
+
+ public static void doGetPolicyMetrics(HttpServletRequest request, HttpServletResponse response) {
+ Set<OnapPDPGroup> groups = new HashSet<>();
+ try {
+ //get the count of policies on the PDP
+ if(XACMLPapServlet.getPAPEngine()!=null){
+ groups = XACMLPapServlet.getPAPEngine().getOnapPDPGroups();
+ }
+ int pdpCount = 0;
+ for (OnapPDPGroup group : groups) {
+ Set<PDPPolicy> policies = group.getPolicies();
+ pdpCount += policies.size();
+ }
+ //get the count of policies on the PAP
+ EntityManager em = null;
+ if(XACMLPapServlet.getEmf()!=null){
+ em = (EntityManager) XACMLPapServlet.getEmf().createEntityManager();
+ }
+ if (em==null){
+ PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " Error creating entity manager with persistence unit: " + XACMLPapServlet.getPersistenceUnit());
+ response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ response.addHeader("error", "Error creating entity manager with persistence unit");
+ return;
+ }
+ int papCount = ((Number) em.createNamedQuery("PolicyVersion.findAllCount").getSingleResult()).intValue();
+ em.close();
+ int totalCount = pdpCount + papCount;
+ //create json string for API response
+ JSONObject json = new JSONObject();
+ json.put("papCount", papCount);
+ json.put("pdpCount", pdpCount);
+ json.put("totalCount", totalCount);
+ if (pdpCount>0 && papCount>0 && totalCount>0) {
+ PolicyLogger.info("Metrics have been found on the Policy Engine for the number of policies on the PAP and PDP.");
+ response.setStatus(HttpServletResponse.SC_OK);
+ response.addHeader("successMapKey", "success");
+ response.addHeader("operation", "getMetrics");
+ response.addHeader("metrics", json.toString() );
+ return;
+ }else{
+ String message = "The policy count on the PAP and PDP is 0. Please check the database and file system to correct this error.";
+ response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ response.addHeader("error", message);
+ return;
+ }
+ } catch (Exception e) {
+ String message = XACMLErrorConstants.ERROR_DATA_ISSUE + " Error Querying the Database: " + e.getMessage();
+ PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "XACMLPapServlet", " Error Querying the Database.");
+ response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ response.addHeader("error", message);
+ return;
+ }
+ }
+
+}