import java.util.Set;
import javax.persistence.EntityManager;
-import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONObject;
import com.att.research.xacml.api.pap.PDPPolicy;
public class MetricService {
+ private static String errorMsg = "error";
+ /*
+ * This is a private constructor
+ * */
+ private 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;
- }
- }
+ }
+ public static void doGetPolicyMetrics(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 = 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(errorMsg, "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(errorMsg, 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(errorMsg, message);
+ return;
+ }
+ }
}