PolicyEngineAPI/src/main/java/org/onap/policy/std/ManualClientEnd.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * PolicyEngineAPI
   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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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=========================================================
  19  */
  20
  21 package org.onap.policy.std;
  22
  23 import java.io.IOException;
  24 import java.net.URI;
  25 import java.net.URISyntaxException;
  26 import java.util.concurrent.CountDownLatch;
  27
  28 import javax.websocket.ClientEndpoint;
  29 import javax.websocket.DeploymentException;
  30 import javax.websocket.OnClose;
  31 import javax.websocket.OnError;
  32 import javax.websocket.OnMessage;
  33 import javax.websocket.OnOpen;
  34 import javax.websocket.Session;
  35
  36 import org.glassfish.tyrus.client.ClientManager;
  37 import org.onap.policy.api.NotificationScheme;
  38 import org.onap.policy.api.NotificationType;
  39 import org.onap.policy.api.PDPNotification;
  40 import org.onap.policy.std.StdPDPNotification;
  41
  42 import org.onap.policy.xacml.api.XACMLErrorConstants;
  43
  44 import org.onap.policy.common.logging.flexlogger.*;
  45
  46 @ClientEndpoint
  47 public class ManualClientEnd {
  48         private static CountDownLatch latch;
  49         private static StdPDPNotification notification = null;
  50         private static String resultJson = null;
  51         private static Logger logger = FlexLogger.getLogger(ManualClientEnd.class.getName());
  52
  53         public static void start(String url) {
  54                 latch = new CountDownLatch(1);
  55                 ClientManager client = ClientManager.createClient();
  56                 if(url.contains("https")){
  57                         url = url.replaceAll("https", "wss");
  58                 }else {
  59                         url = url.replaceAll("http", "ws");
  60                 }
  61                 try {
  62                         client.connectToServer(ManualClientEnd.class, new URI(url+"notifications"));
  63                         latch.await();
  64                 } catch (DeploymentException | URISyntaxException | InterruptedException |IOException e) {
  65                         logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
  66                 }
  67         }
  68
  69         public static PDPNotification result(NotificationScheme scheme) {
  70                 if (resultJson == null || notification == null) {
  71                         logger.debug("No Result" );
  72                         return null;
  73                 } else {
  74                         if(scheme.equals(NotificationScheme.MANUAL_ALL_NOTIFICATIONS)) {
  75                                 boolean removed = false;
  76                                 boolean updated = false;
  77                                 if(notification.getRemovedPolicies()!=null && !notification.getRemovedPolicies().isEmpty()){
  78                                         removed = true;
  79                                 }
  80                                 if(notification.getLoadedPolicies()!=null && !notification.getLoadedPolicies().isEmpty()){
  81                                         updated = true;
  82                                 }
  83                                 if(removed && updated) {
  84                                         notification.setNotificationType(NotificationType.BOTH);
  85                                 }else if(removed){
  86                                         notification.setNotificationType(NotificationType.REMOVE);
  87                                 }else if(updated){
  88                                         notification.setNotificationType(NotificationType.UPDATE);
  89                                 }
  90                                 return notification;
  91                         }else if(scheme.equals(NotificationScheme.MANUAL_NOTIFICATIONS)) {
  92                                 return MatchStore.checkMatch(notification);
  93                         }else {
  94                                 return null;
  95                         }
  96                 }
  97         }
  98
  99         // WebSockets Code..
 100         @OnOpen
 101         public void onOpen(Session session) throws IOException {
 102                 logger.info("Session Started with : " + session.getId());
 103                 session.getBasicRemote().sendText("Manual");
 104         }
 105
 106         @OnError
 107         public void onError(Session session, Throwable e) {
 108                 logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in: "+ session.getId());
 109                 latch.countDown();
 110         }
 111
 112         @OnClose
 113         public void onClose(Session session) {
 114                 logger.info("Session ended with "+ session.getId());
 115                 latch.countDown();
 116         }
 117
 118         @OnMessage
 119         public static void onMessage(String message, Session session){
 120                 logger.debug(" Manual Notification Recieved Message : " + message +" Session info is : "+ session.getId());
 121                 resultJson = message;
 122                 try {
 123                         notification = NotificationUnMarshal.notificationJSON(message);
 124                 } catch (Exception e) {
 125                         logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
 126                         latch.countDown();
 127                 }
 128                 try {
 129                         session.close();
 130                 } catch (IOException e) {
 131                         logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + e);
 132                         latch.countDown();
 133                 } // For Manual Client..
 134                 latch.countDown();
 135         }
 136 }