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.HttpServletResponse;
28 import org.json.JSONObject;
29 import org.onap.policy.common.logging.eelf.MessageCodes;
30 import org.onap.policy.common.logging.eelf.PolicyLogger;
31 import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
32 import org.onap.policy.xacml.api.XACMLErrorConstants;
33 import org.onap.policy.xacml.api.pap.OnapPDPGroup;
35 import com.att.research.xacml.api.pap.PDPPolicy;
37 public class MetricService {
38 private static String errorMsg = "error";
40 * This is a private constructor
42 private MetricService(){
45 public static void doGetPolicyMetrics(HttpServletResponse response) {
46 Set<OnapPDPGroup> groups = new HashSet<>();
48 //get the count of policies on the PDP
49 if(XACMLPapServlet.getPAPEngine()!=null){
50 groups = XACMLPapServlet.getPAPEngine().getOnapPDPGroups();
53 for (OnapPDPGroup group : groups) {
54 Set<PDPPolicy> policies = group.getPolicies();
55 pdpCount += policies.size();
57 //get the count of policies on the PAP
58 EntityManager em = null;
59 if(XACMLPapServlet.getEmf()!=null){
60 em = XACMLPapServlet.getEmf().createEntityManager();
63 PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " Error creating entity manager with persistence unit: " + XACMLPapServlet.getPersistenceUnit());
64 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
65 response.addHeader(errorMsg, "Error creating entity manager with persistence unit");
68 int papCount = ((Number) em.createNamedQuery("PolicyVersion.findAllCount").getSingleResult()).intValue();
70 int totalCount = pdpCount + papCount;
71 //create json string for API response
72 JSONObject json = new JSONObject();
73 json.put("papCount", papCount);
74 json.put("pdpCount", pdpCount);
75 json.put("totalCount", totalCount);
76 if (pdpCount>0 && papCount>0 && totalCount>0) {
77 PolicyLogger.info("Metrics have been found on the Policy Engine for the number of policies on the PAP and PDP.");
78 response.setStatus(HttpServletResponse.SC_OK);
79 response.addHeader("successMapKey", "success");
80 response.addHeader("operation", "getMetrics");
81 response.addHeader("metrics", json.toString() );
84 String message = "The policy count on the PAP and PDP is 0. Please check the database and file system to correct this error.";
85 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
86 response.addHeader(errorMsg, message);
89 } catch (Exception e) {
90 String message = XACMLErrorConstants.ERROR_DATA_ISSUE + " Error Querying the Database: " + e.getMessage();
91 PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "XACMLPapServlet", " Error Querying the Database.");
92 response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
93 response.addHeader(errorMsg, message);