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/*-
* ============LICENSE_START=======================================================
* PolicyEngineAPI
* ================================================================================
* 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.std;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.util.List;
import java.util.UUID;
import org.openecomp.policy.api.NotificationHandler;
import org.openecomp.policy.api.NotificationScheme;
import org.openecomp.policy.api.NotificationType;
import org.openecomp.policy.api.PDPNotification;
import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
import org.openecomp.policy.common.logging.flexlogger.Logger;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import com.att.nsa.cambria.client.CambriaClientBuilders;
import com.att.nsa.cambria.client.CambriaClientBuilders.ConsumerBuilder;
import com.att.nsa.cambria.client.CambriaConsumer;
/**
* Create a UEB Consumer to receive policy update notification.
*
*
*
*/
public class AutoClientUEB implements Runnable {
private static StdPDPNotification notification = null;
private static NotificationScheme scheme = null;
private static NotificationHandler handler = null;
private static String topic = null;
private static String url = null;
private static boolean status = false;
private static Logger logger = FlexLogger.getLogger(AutoClientUEB.class.getName());
private static String notficatioinType = null;
private static CambriaConsumer CConsumer = null;
private static String apiKey = null;
private static String apiSecret = null;
private static List<String> uebURLList = null;
public volatile boolean isRunning = false;
public AutoClientUEB(String url, List<String> uebURLList, String apiKey, String apiSecret) {
AutoClientUEB.url = url;
AutoClientUEB.uebURLList = uebURLList;
AutoClientUEB.apiKey = apiKey;
AutoClientUEB.apiKey = apiKey;
}
public void setAuto(NotificationScheme scheme,
NotificationHandler handler) {
AutoClientUEB.scheme = scheme;
AutoClientUEB.handler = handler;
}
public static void setScheme(NotificationScheme scheme) {
AutoClientUEB.scheme = scheme;
}
public static boolean getStatus(){
return AutoClientUEB.status;
}
public static String getURL() {
return AutoClientUEB.url;
}
public static String getNotficationType(){
return AutoClientUEB.notficatioinType;
}
public synchronized boolean isRunning() {
return this.isRunning;
}
public synchronized void terminate() {
this.isRunning = false;
}
@Override
public void run() {
synchronized(this) {
this.isRunning = true;
}
String group = UUID.randomUUID ().toString ();
String id = "0";
//String topic = null;
// Stop and Start needs to be done.
if (scheme != null && handler!=null) {
if (scheme.equals(NotificationScheme.AUTO_ALL_NOTIFICATIONS) || scheme.equals(NotificationScheme.AUTO_NOTIFICATIONS)) {
URL aURL;
try {
aURL = new URL(AutoClientUEB.topic);
topic = aURL.getHost() + aURL.getPort();
} catch (MalformedURLException e) {
topic = AutoClientUEB.url.replace("[:/]", "");
}
try {
//CConsumer = CambriaClientFactory.createConsumer ( null, uebURLList, topic, group, id, 15*1000, 1000 );
ConsumerBuilder builder = new CambriaClientBuilders.ConsumerBuilder();
builder.knownAs(group, id)
.usingHosts(uebURLList)
.onTopic(topic)
.waitAtServer(15*1000)
.receivingAtMost(1000)
.authenticatedBy(apiKey, apiSecret);
CConsumer = builder.build();
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (GeneralSecurityException e1) {
e1.printStackTrace();
}
while (this.isRunning() )
{
try {
for ( String msg : CConsumer.fetch () )
{
logger.debug("Auto Notification Recieved Message " + msg + " from UEB cluster : " + uebURLList.toString());
notification = NotificationUnMarshal.notificationJSON(msg);
callHandler();
}
} catch (Exception e) {
logger.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Error in processing UEB message" + e.getMessage());
}
}
logger.debug("Stopping UEB Consumer loop will not logger fetch messages from the cluster");
}
}
}
private static void callHandler() {
if (handler != null && scheme != null) {
if (scheme.equals(NotificationScheme.AUTO_ALL_NOTIFICATIONS)) {
boolean removed = false, updated = false;
if (notification.getRemovedPolicies() != null && !notification.getRemovedPolicies().isEmpty()) {
removed = true;
}
if (notification.getLoadedPolicies() != null && !notification.getLoadedPolicies().isEmpty()) {
updated = true;
}
if (removed && updated) {
notification.setNotificationType(NotificationType.BOTH);
} else if (removed) {
notification.setNotificationType(NotificationType.REMOVE);
} else if (updated) {
notification.setNotificationType(NotificationType.UPDATE);
}
handler.notificationReceived(notification);
} else if (scheme.equals(NotificationScheme.AUTO_NOTIFICATIONS)) {
PDPNotification newNotification = MatchStore.checkMatch(notification);
if (newNotification.getNotificationType() != null) {
handler.notificationReceived(newNotification);
}
}
}
}
}
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