PolicyEngineAPI/src/main/java/org/openecomp/policy/std/AutoClientUEB.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.openecomp.policy.std;
  22
  23 import java.net.MalformedURLException;
  24 import java.net.URL;
  25 import java.security.GeneralSecurityException;
  26 import java.util.List;
  27 import java.util.UUID;
  28
  29 import org.openecomp.policy.api.NotificationHandler;
  30 import org.openecomp.policy.api.NotificationScheme;
  31 import org.openecomp.policy.api.NotificationType;
  32 import org.openecomp.policy.api.PDPNotification;
  33 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
  34 import org.openecomp.policy.common.logging.flexlogger.Logger;
  35 import org.openecomp.policy.xacml.api.XACMLErrorConstants;
  36
  37 import com.att.nsa.cambria.client.CambriaClientBuilders;
  38 import com.att.nsa.cambria.client.CambriaClientBuilders.ConsumerBuilder;
  39 import com.att.nsa.cambria.client.CambriaConsumer;
  40 /**
  41  * Create a UEB Consumer to receive policy update notification.
  42  *
  43  *
  44  *
  45  */
  46 public class AutoClientUEB implements Runnable  {
  47         private static StdPDPNotification notification = null;
  48         private static NotificationScheme scheme = null;
  49         private static NotificationHandler handler = null;
  50         private static String topic = null;
  51         private static String url = null;
  52         private static boolean status = false;
  53         private static Logger logger = FlexLogger.getLogger(AutoClientUEB.class.getName());
  54         private static String notficatioinType = null;
  55         private static CambriaConsumer CConsumer = null;
  56         private static String apiKey = null;
  57         private static String apiSecret = null;
  58         private static List<String> uebURLList = null;
  59         public volatile boolean isRunning = false;
  60
  61
  62         public AutoClientUEB(String url, List<String> uebURLList, String apiKey, String apiSecret) {
  63                AutoClientUEB.url = url;
  64                AutoClientUEB.uebURLList = uebURLList;
  65                AutoClientUEB.apiKey = apiKey;
  66                AutoClientUEB.apiKey = apiKey;
  67         }
  68
  69         public void setAuto(NotificationScheme scheme,
  70                         NotificationHandler handler) {
  71                 AutoClientUEB.scheme = scheme;
  72                 AutoClientUEB.handler = handler;
  73         }
  74
  75         public static void setScheme(NotificationScheme scheme) {
  76                 AutoClientUEB.scheme = scheme;
  77         }
  78
  79         public static boolean getStatus(){
  80                 return AutoClientUEB.status;
  81         }
  82
  83         public static String getURL() {
  84                 return AutoClientUEB.url;
  85         }
  86
  87         public static String getNotficationType(){
  88                 return AutoClientUEB.notficatioinType;
  89         }
  90
  91         public synchronized boolean isRunning() {
  92                 return this.isRunning;
  93         }
  94
  95         public synchronized void terminate() {
  96                 this.isRunning = false;
  97         }
  98
  99         @Override
 100         public void run() {
 101                 synchronized(this) {
 102                         this.isRunning = true;
 103                 }
 104                 String group =  UUID.randomUUID ().toString ();
 105                 String id = "0";
 106                 //String topic = null;
 107                 // Stop and Start needs to be done.
 108                 if (scheme != null && handler!=null) {
 109                         if (scheme.equals(NotificationScheme.AUTO_ALL_NOTIFICATIONS) || scheme.equals(NotificationScheme.AUTO_NOTIFICATIONS)) {
 110                                 URL aURL;
 111                                 try {
 112                                         aURL = new URL(AutoClientUEB.topic);
 113                                         topic = aURL.getHost() + aURL.getPort();
 114                                 } catch (MalformedURLException e) {
 115                                         topic = AutoClientUEB.url.replace("[:/]", "");
 116                                 }
 117
 118                                 try {
 119                                         //CConsumer = CambriaClientFactory.createConsumer ( null, uebURLList, topic, group, id, 15*1000, 1000 );
 120                                         ConsumerBuilder builder = new CambriaClientBuilders.ConsumerBuilder();
 121                                         builder.knownAs(group, id)
 122                                         .usingHosts(uebURLList)
 123                                         .onTopic(topic)
 124                                         .waitAtServer(15*1000)
 125                                         .receivingAtMost(1000)
 126                                         .authenticatedBy(apiKey, apiSecret);
 127
 128                                          CConsumer = builder.build();
 129
 130                                 } catch (MalformedURLException e1) {
 131                                         e1.printStackTrace();
 132                                 } catch (GeneralSecurityException e1) {
 133                                         e1.printStackTrace();
 134                                 }
 135                                 while (this.isRunning() )
 136                                 {
 137                                         try {
 138                                                 for ( String msg : CConsumer.fetch () )
 139                                                 {
 140                                                         logger.debug("Auto Notification Recieved Message " + msg + " from UEB cluster : " + uebURLList.toString());
 141                                                         notification = NotificationUnMarshal.notificationJSON(msg);
 142                                                         callHandler();
 143                                                 }
 144                                         } catch (Exception e) {
 145                                                 logger.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Error in processing UEB message" + e.getMessage());
 146                                         }
 147
 148                                 }
 149                                 logger.debug("Stopping UEB Consumer loop will not logger fetch messages from the cluster");
 150                         }
 151                 }
 152         }
 153
 154         private static void callHandler() {
 155                 if (handler != null && scheme != null) {
 156                         if (scheme.equals(NotificationScheme.AUTO_ALL_NOTIFICATIONS)) {
 157                                 boolean removed = false, updated = false;
 158                                 if (notification.getRemovedPolicies() != null && !notification.getRemovedPolicies().isEmpty()) {
 159                                         removed = true;
 160                                 }
 161                                 if (notification.getLoadedPolicies() != null && !notification.getLoadedPolicies().isEmpty()) {
 162                                         updated = true;
 163                                 }
 164                                 if (removed && updated) {
 165                                         notification.setNotificationType(NotificationType.BOTH);
 166                                 } else if (removed) {
 167                                         notification.setNotificationType(NotificationType.REMOVE);
 168                                 } else if (updated) {
 169                                         notification.setNotificationType(NotificationType.UPDATE);
 170                                 }
 171                                 handler.notificationReceived(notification);
 172                         } else if (scheme.equals(NotificationScheme.AUTO_NOTIFICATIONS)) {
 173                                 PDPNotification newNotification = MatchStore.checkMatch(notification);
 174                                 if (newNotification.getNotificationType() != null) {
 175                                         handler.notificationReceived(newNotification);
 176                                 }
 177                         }
 178                 }
 179         }
 180
 181 }