2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.policy.pap.xacml.rest.service;
22 import java.util.HashSet;
25 import javax.persistence.EntityManager;
26 import javax.servlet.http.HttpServletRequest;
27 import javax.servlet.http.HttpServletResponse;
29 import org.json.JSONObject;
30 import org.onap.policy.common.logging.eelf.MessageCodes;
31 import org.onap.policy.common.logging.eelf.PolicyLogger;
32 import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
33 import org.onap.policy.xacml.api.XACMLErrorConstants;
34 import org.onap.policy.xacml.api.pap.OnapPDPGroup;
36 import com.att.research.xacml.api.pap.PDPPolicy;
38 public class MetricService {
40 public static void doGetPolicyMetrics(HttpServletRequest request, HttpServletResponse response) {
41 Set<OnapPDPGroup> groups = new HashSet<>();
43 //get the count of policies on the PDP
44 if(XACMLPapServlet.getPAPEngine()!=null){
45 groups = XACMLPapServlet.getPAPEngine().getOnapPDPGroups();
48 for (OnapPDPGroup group : groups) {
49 Set<PDPPolicy> policies = group.getPolicies();
50 pdpCount += policies.size();
52 //get the count of policies on the PAP
53 EntityManager em = null;
54 if(XACMLPapServlet.getEmf()!=null){
55 em = (EntityManager) XACMLPapServlet.getEmf().createEntityManager();
58 PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " Error creating entity manager with persistence unit: " + XACMLPapServlet.getPersistenceUnit());
59 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
60 response.addHeader("error", "Error creating entity manager with persistence unit");
63 int papCount = ((Number) em.createNamedQuery("PolicyVersion.findAllCount").getSingleResult()).intValue();
65 int totalCount = pdpCount + papCount;
66 //create json string for API response
67 JSONObject json = new JSONObject();
68 json.put("papCount", papCount);
69 json.put("pdpCount", pdpCount);
70 json.put("totalCount", totalCount);
71 if (pdpCount>0 && papCount>0 && totalCount>0) {
72 PolicyLogger.info("Metrics have been found on the Policy Engine for the number of policies on the PAP and PDP.");
73 response.setStatus(HttpServletResponse.SC_OK);
74 response.addHeader("successMapKey", "success");
75 response.addHeader("operation", "getMetrics");
76 response.addHeader("metrics", json.toString() );
79 String message = "The policy count on the PAP and PDP is 0. Please check the database and file system to correct this error.";
80 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
81 response.addHeader("error", message);
84 } catch (Exception e) {
85 String message = XACMLErrorConstants.ERROR_DATA_ISSUE + " Error Querying the Database: " + e.getMessage();
86 PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "XACMLPapServlet", " Error Querying the Database.");
87 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
88 response.addHeader("error", message);