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/*-
* ============LICENSE_START=======================================================
* ECOMP Policy Engine
* ================================================================================
* 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.pypdp.notifications;
import java.util.HashSet;
import java.util.Iterator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openecomp.policy.api.LoadedPolicy;
import org.openecomp.policy.api.NotificationHandler;
import org.openecomp.policy.api.PDPNotification;
import org.openecomp.policy.api.RemovedPolicy;
import org.openecomp.policy.common.logging.eelf.MessageCodes;
import org.openecomp.policy.common.logging.eelf.PolicyLogger;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
public class NotificationController implements NotificationHandler{
private static final Log logger = LogFactory.getLog(NotificationController.class);
private static Notification record = new Notification();
//private static CountDownLatch latch;
@Override
public void notificationReceived(PDPNotification notification) {
//latch = new CountDownLatch(1);
if(notification!=null){
// Take this into our Record holder for polling requests.
NotificationServer.setUpdate(record(notification));
// Send the Update as is for AUTO clients.
ObjectWriter ow = new ObjectMapper().writer();
try{
String json = ow.writeValueAsString(notification);
System.out.println("\n Notification: "+json);
logger.info(json);
NotificationServer.sendNotification(json);
//latch.await();
} catch (JsonProcessingException e) {
logger.error(XACMLErrorConstants.ERROR_SCHEMA_INVALID + e.getMessage());
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SCHEMA_INVALID, e, "");
}
}
}
public static String record(PDPNotification notification) {
// Initialization with updates.
if(record.getRemovedPolicies()== null){
record.setRemovedPolicies(notification.getRemovedPolicies());
}
if(record.getLoadedPolicies()== null){
record.setLoadedPolicies(notification.getLoadedPolicies());
}
// Check if there is anything new and update the record..
if(record.getLoadedPolicies()!= null || record.getRemovedPolicies()!=null) {
HashSet<RemovedPolicy> removedPolicies = (HashSet<RemovedPolicy>) record.getRemovedPolicies();
HashSet<LoadedPolicy> updatedPolicies = (HashSet<LoadedPolicy>) record.getLoadedPolicies();
// Checking with New updated policies.
if(notification.getLoadedPolicies()!= null && !notification.getLoadedPolicies().isEmpty()) {
for( LoadedPolicy newUpdatedPolicy : notification.getLoadedPolicies()) {
// If it was removed earlier then we need to remove from our record
Iterator<RemovedPolicy> oldRemovedPolicy = removedPolicies.iterator();
while(oldRemovedPolicy.hasNext()){
RemovedPolicy policy = oldRemovedPolicy.next();
if(newUpdatedPolicy.getPolicyName().equals(policy.getPolicyName())) {
if(newUpdatedPolicy.getVersionNo().equals(policy.getVersionNo())) {
oldRemovedPolicy.remove();
}
}
}
// If it was previously updated need to Overwrite it to the record.
Iterator<LoadedPolicy> oldUpdatedPolicy = updatedPolicies.iterator();
while(oldUpdatedPolicy.hasNext()){
LoadedPolicy policy = oldUpdatedPolicy.next();
if(newUpdatedPolicy.getPolicyName().equals(policy.getPolicyName())) {
if(newUpdatedPolicy.getVersionNo().equals(policy.getVersionNo())) {
oldUpdatedPolicy.remove();
}
}
}
updatedPolicies.add(newUpdatedPolicy);
}
}
// Checking with New Removed policies.
if(notification.getRemovedPolicies()!= null && !notification.getRemovedPolicies().isEmpty()) {
for( RemovedPolicy newRemovedPolicy : notification.getRemovedPolicies()) {
// If it was removed earlier then we need to remove from our record
Iterator<RemovedPolicy> oldRemovedPolicy = removedPolicies.iterator();
while(oldRemovedPolicy.hasNext()){
RemovedPolicy policy = oldRemovedPolicy.next();
if(newRemovedPolicy.getPolicyName().equals(policy.getPolicyName())) {
if(newRemovedPolicy.getVersionNo().equals(policy.getVersionNo())) {
oldRemovedPolicy.remove();
}
}
}
// If it was previously updated need to Overwrite it to the record.
Iterator<LoadedPolicy> oldUpdatedPolicy = updatedPolicies.iterator();
while(oldUpdatedPolicy.hasNext()){
LoadedPolicy policy = oldUpdatedPolicy.next();
if(newRemovedPolicy.getPolicyName().equals(policy.getPolicyName())) {
if(newRemovedPolicy.getVersionNo().equals(policy.getVersionNo())) {
oldUpdatedPolicy.remove();
}
}
}
removedPolicies.add(newRemovedPolicy);
}
}
record.setRemovedPolicies(removedPolicies);
record.setLoadedPolicies(updatedPolicies);
}
// Send the Result to the caller.
ObjectWriter om = new ObjectMapper().writer();
String json = null;
try {
json = om.writeValueAsString(record);
} catch (JsonProcessingException e) {
logger.error(XACMLErrorConstants.ERROR_SCHEMA_INVALID + e.getMessage());
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SCHEMA_INVALID, e, "");
}
logger.info(json);
return json;
}
}
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