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/*-
* ============LICENSE_START=======================================================
* ECOMP-PDP-REST
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.policy.pdp.rest.notifications;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import org.openecomp.policy.rest.XACMLRestProperties;
import org.openecomp.policy.common.logging.eelf.MessageCodes;
import org.openecomp.policy.common.logging.eelf.PolicyLogger;
import com.att.nsa.cambria.client.CambriaClientFactory;
import com.att.nsa.cambria.client.CambriaPublisher;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import com.att.research.xacml.util.XACMLProperties;
import org.openecomp.policy.common.logging.flexlogger.*;
/**
* The NotificationServer sends the Server Notifications to the Clients once there is any Event.
* WebSockets is being used as a medium for sending Notifications.
* UEB is being used as a medium for sending Notifications.
*
* @version 0.1
*
**/
@ServerEndpoint(value = "/notifications")
public class NotificationServer {
private static final Logger logger = FlexLogger.getLogger(NotificationServer.class);
private static Queue<Session> queue = new ConcurrentLinkedQueue<Session>();
private static String update = null;
private static String hosts = null;
private static URL aURL = null;
@OnOpen
public void openConnection(Session session) {
logger.info("Session Connected: " + session.getId());
queue.add(session);
}
@OnClose
public void closeConnection(Session session) {
queue.remove(session);
}
@OnError
public void error(Session session, Throwable t) {
queue.remove(session);
logger.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Session Error for : " + session.getId() + " Error: " + t.getMessage());
}
@OnMessage
public void Message(String message, Session session) {
if(message.equalsIgnoreCase("Manual")) {
try {
session.getBasicRemote().sendText(update);
session.close();
} catch (IOException e) {
logger.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in sending the Event Notification: "+ e.getMessage());
logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error sending Message update");
}
}
}
public static void sendNotification(String notification, String propNotificationType, String pdpURL){
logger.debug("Notification set to " + propNotificationType);
if (propNotificationType.equals("ueb")){
String topic = null;
try {
aURL = new URL(pdpURL);
topic = aURL.getHost() + aURL.getPort();
} catch (MalformedURLException e1) {
pdpURL = pdpURL.replace("/", "");
topic = pdpURL.replace(":", "");
logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in parsing out pdpURL for UEB notfication ");
PolicyLogger.error(MessageCodes.ERROR_PROCESS_FLOW, e1, "Error in parsing out pdpURL for UEB notfication ");
}
hosts = XACMLProperties.getProperty(XACMLRestProperties.PROP_NOTIFICATION_UEB_CLUSTER);
logger.debug("Creating Publisher for host: " + hosts + " with topic: " + topic);
CambriaPublisher pub = null;
try {
pub = CambriaClientFactory.createSimplePublisher (null, hosts, topic );
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (GeneralSecurityException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
pub.send( "MyPartitionKey", notification );
} catch (IOException e) {
logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error sending notification update");
}
pub.close();
}
for(Session session: queue) {
try {
session.getBasicRemote().sendText(notification);
} catch (IOException e) {
logger.info(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error in sending the Event Notification: "+ e.getMessage());
}
}
}
public static void setUpdate(String update) {
NotificationServer.update = update;
}
}
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