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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.onap.policy.std;
import java.util.List;
import java.util.UUID;
import org.onap.policy.api.NotificationHandler;
import org.onap.policy.api.NotificationScheme;
import org.onap.policy.api.NotificationType;
import org.onap.policy.api.PDPNotification;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.utils.BusConsumer;
import org.onap.policy.utils.BusConsumer.DmaapConsumerWrapper;
import org.onap.policy.xacml.api.XACMLErrorConstants;
public class AutoClientDMAAP implements Runnable {
private static StdPDPNotification notification = null;
private static NotificationScheme scheme = null;
private static NotificationHandler handler = null;
private static String topic = null;
private static boolean status = false;
private static Logger logger = FlexLogger.getLogger(AutoClientDMAAP.class.getName());
private static String notficatioinType = null;
private static BusConsumer dmaapConsumer = null;
private static List<String> dmaapList = null;
private static String aafLogin = null;
private static String aafPassword = null;
private volatile boolean running = false;
public AutoClientDMAAP(List<String> dmaapList, String topic, String aafLogin, String aafPassword) {
AutoClientDMAAP.topic = topic;
AutoClientDMAAP.dmaapList = dmaapList;
AutoClientDMAAP.aafLogin = aafLogin;
AutoClientDMAAP.aafPassword = aafPassword;
}
public static void setAuto(NotificationScheme scheme, NotificationHandler handler) {
AutoClientDMAAP.scheme = scheme;
AutoClientDMAAP.handler = handler;
}
public static void setScheme(NotificationScheme scheme) {
AutoClientDMAAP.scheme = scheme;
}
public static boolean getStatus() {
return AutoClientDMAAP.status;
}
public static String getTopic() {
return AutoClientDMAAP.topic;
}
public static String getNotficationType() {
return AutoClientDMAAP.notficatioinType;
}
public synchronized boolean isRunning() {
return this.running;
}
public synchronized void terminate() {
this.running = false;
}
@Override
public void run() {
synchronized (this) {
this.running = true;
}
String group = UUID.randomUUID().toString();
String id = "0";
// Stop and Start needs to be done.
if (scheme != null && handler != null) {
if (scheme.equals(NotificationScheme.AUTO_ALL_NOTIFICATIONS)
|| scheme.equals(NotificationScheme.AUTO_NOTIFICATIONS)) {
// create a loop to listen for messages from DMaaP server
try {
setDmaapCosumer(new BusConsumer.DmaapConsumerWrapper(dmaapList, topic, aafLogin, aafPassword, group,
id, 15 * 1000, 1000));
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Unable to create DMaaP Consumer: ", e);
}
while (this.isRunning()) {
try {
for (String msg : dmaapConsumer.fetch()) {
logger.debug("Auto Notification Recieved Message " + msg + " from DMAAP server : "
+ dmaapList.toString());
setNotification(NotificationUnMarshal.notificationJSON(msg));
callHandler();
}
} catch (Exception e) {
logger.debug("Error in processing DMAAP message", e);
}
}
logger.debug("Stopping DMAAP Consumer loop will no longer fetch messages from the servers");
}
}
}
private static void setNotification(StdPDPNotification notificationJSON) {
notification = notificationJSON;
}
private static void setDmaapCosumer(DmaapConsumerWrapper dmaapConsumerWrapper) {
dmaapConsumer = dmaapConsumerWrapper;
}
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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