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=========================================================
21 package org.openecomp.policy.pdp.rest.notifications;
23 import java.io.IOException;
24 import java.net.MalformedURLException;
26 import java.security.GeneralSecurityException;
27 import java.util.ArrayList;
28 import java.util.Arrays;
29 import java.util.List;
30 import java.util.Queue;
31 import java.util.concurrent.ConcurrentLinkedQueue;
32 import java.util.concurrent.TimeUnit;
34 import javax.websocket.OnClose;
35 import javax.websocket.OnError;
36 import javax.websocket.OnMessage;
37 import javax.websocket.OnOpen;
38 import javax.websocket.Session;
39 import javax.websocket.server.ServerEndpoint;
41 import org.openecomp.policy.common.logging.eelf.MessageCodes;
42 import org.openecomp.policy.common.logging.eelf.PolicyLogger;
43 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
44 import org.openecomp.policy.common.logging.flexlogger.Logger;
45 import org.openecomp.policy.pdp.rest.api.services.NotificationService;
46 import org.openecomp.policy.rest.XACMLRestProperties;
47 import org.openecomp.policy.utils.BusPublisher;
48 import org.openecomp.policy.xacml.api.XACMLErrorConstants;
50 import com.att.nsa.cambria.client.CambriaBatchingPublisher;
51 import com.att.nsa.cambria.client.CambriaClientBuilders;
52 import com.att.research.xacml.util.XACMLProperties;
56 * The NotificationServer sends the Server Notifications to the Clients once there is any Event.
57 * WebSockets is being used as a medium for sending Notifications.
58 * UEB is being used as a medium for sending Notifications.
59 * DMAAP is being used as a medium for sending Notifications.
64 @ServerEndpoint(value = "/notifications")
65 public class NotificationServer {
66 private static final Logger LOGGER = FlexLogger.getLogger(NotificationServer.class);
67 private static Queue<Session> queue = new ConcurrentLinkedQueue<>();
68 private static String update = null;
69 private static String hosts = null;
70 private static URL aURL = null;
73 public void openConnection(Session session) {
74 LOGGER.info("Session Connected: " + session.getId());
79 public void closeConnection(Session session) {
80 queue.remove(session);
84 public void error(Session session, Throwable t) {
85 queue.remove(session);
86 LOGGER.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Session Error for : " + session.getId() + " Error: " + t.getMessage());
91 public void Message(String message, Session session) {
93 if(message.equalsIgnoreCase("Manual")) {
95 session.getBasicRemote().sendText(update);
97 } catch (IOException e) {
98 LOGGER.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in sending the Event Notification: "+ e.getMessage());
99 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error sending Message update");
104 public static void sendNotification(String notification, String propNotificationType, String pdpURL) throws Exception {
106 LOGGER.debug("Notification set to " + propNotificationType);
107 if (propNotificationType.equals("ueb")){
111 aURL = new URL(pdpURL);
112 topic = aURL.getHost() + aURL.getPort();
113 } catch (MalformedURLException e1) {
114 pdpURL = pdpURL.replace("/", "");
115 topic = pdpURL.replace(":", "");
116 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in parsing out pdpURL for UEB notfication ");
117 PolicyLogger.error(MessageCodes.ERROR_PROCESS_FLOW, e1, "Error in parsing out pdpURL for UEB notfication ");
119 hosts = XACMLProperties.getProperty(XACMLRestProperties.PROP_NOTIFICATION_SERVERS);
120 String apiKey = XACMLProperties.getProperty(XACMLRestProperties.PROP_UEB_API_KEY);
121 String apiSecret = XACMLProperties.getProperty(XACMLRestProperties.PROP_UEB_API_SECRET);
123 LOGGER.debug("Creating Publisher for host: " + hosts + " with topic: " + topic);
124 CambriaBatchingPublisher pub = null;
126 if(hosts==null || topic==null || apiKey==null || apiSecret==null){
127 LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "UEB properties are missing from the property file ");
128 throw new Exception(XACMLErrorConstants.ERROR_DATA_ISSUE + "UEB properties are missing from the property file ");
135 pub = new CambriaClientBuilders.PublisherBuilder ()
136 .usingHosts ( hosts )
138 .authenticatedBy ( apiKey, apiSecret )
142 } catch (MalformedURLException e1) {
143 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error creating the UEB publisher" + e1.getMessage());
144 } catch (GeneralSecurityException e1) {
145 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error creating the UEB publisher" + e1.getMessage());
149 pub.send( "MyPartitionKey", notification );
150 } catch (IOException e) {
151 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error sending notification update" + e.getMessage());
153 // close the publisher. The batching publisher does not send events
154 // immediately, so you MUST use close to send any remaining messages.
155 // You provide the amount of time you're willing to wait for the sends
156 // to succeed before giving up. If any messages are unsent after that time,
157 // they're returned to your app. You could, for example, persist to disk
158 // and try again later.
159 final List<?> stuck = pub.close ( 20, TimeUnit.SECONDS );
161 if (!stuck.isEmpty()){
162 LOGGER.error( stuck.size() + " messages unsent" );
164 LOGGER.info( "Clean exit; all messages sent: " + notification );
167 } else if (propNotificationType.equals("dmaap")) {
169 // Setting up the Publisher for DMaaP MR
170 String dmaapServers = XACMLProperties.getProperty(XACMLRestProperties.PROP_NOTIFICATION_SERVERS);
171 String topic = XACMLProperties.getProperty(XACMLRestProperties.PROP_NOTIFICATION_TOPIC);
172 String aafLogin = XACMLProperties.getProperty("DMAAP_AAF_LOGIN");
173 String aafPassword = XACMLProperties.getProperty("DMAAP_AAF_PASSWORD");
176 if(dmaapServers==null || topic==null){
177 LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "DMaaP properties are missing from the property file ");
178 throw new Exception(XACMLErrorConstants.ERROR_DATA_ISSUE + "DMaaP properties are missing from the property file ");
186 List<String> dmaapList = null;
187 if(dmaapServers.contains(",")) {
188 dmaapList = new ArrayList<>(Arrays.asList(dmaapServers.split("\\s*,\\s*")));
190 dmaapList = new ArrayList<>();
191 dmaapList.add(dmaapServers);
194 BusPublisher publisher =
195 new BusPublisher.DmaapPublisherWrapper(dmaapList,
200 // Sending notification through DMaaP Message Router
201 publisher.send( "MyPartitionKey", notification);
202 LOGGER.debug("Message Published on DMaaP :" + dmaapList.get(0) + "for Topic: " + topic);
205 } catch (Exception e) {
206 LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error sending notification update" + e.getMessage());
210 for(Session session: queue) {
212 session.getBasicRemote().sendText(notification);
213 } catch (IOException e) {
214 LOGGER.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in sending the Event Notification: "+ e.getMessage());
217 NotificationService.sendNotification(notification);
220 public static void setUpdate(String update) {
221 NotificationServer.update = update;