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