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/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*
*******************************************************************************/
package org.onap.dmaap.dmf.mr.backends.memory;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import org.onap.dmaap.dmf.mr.metabroker.Broker;
import org.onap.dmaap.dmf.mr.metabroker.Topic;
import com.att.nsa.configs.ConfigDb;
import com.att.nsa.security.NsaAcl;
import com.att.nsa.security.NsaApiKey;
/**
*
* @author anowarul.islam
*
*/
public class MemoryMetaBroker implements Broker {
private final MemoryQueue fQueue;
private final HashMap<String, MemTopic> fTopics;
/**
*
* @param mq
* @param configDb
* @param settings
*/
public MemoryMetaBroker(MemoryQueue mq, ConfigDb configDb) {
fQueue = mq;
fTopics = new HashMap<>();
}
@Override
public List<Topic> getAllTopics() {
return new LinkedList<Topic>(fTopics.values());
}
@Override
public Topic getTopic(String topic) {
return fTopics.get(topic);
}
@Override
public Topic createTopic(String topic, String desc, String ownerApiId, int partitions, int replicas,
boolean transactionEnabled) throws TopicExistsException {
if (getTopic(topic) != null) {
throw new TopicExistsException(topic);
}
fQueue.createTopic(topic);
fTopics.put(topic, new MemTopic(topic, desc, ownerApiId, transactionEnabled));
return getTopic(topic);
}
@Override
public void deleteTopic(String topic) {
fTopics.remove(topic);
fQueue.removeTopic(topic);
}
private static class MemTopic implements Topic {
private final String fName;
private final String fDesc;
private final String fOwner;
private NsaAcl fReaders;
private NsaAcl fWriters;
private boolean ftransactionEnabled;
private String accessDenied = "User does not own this topic ";
/**
* constructor initialization
*
* @param name
* @param desc
* @param owner
* @param transactionEnabled
*/
public MemTopic(String name, String desc, String owner, boolean transactionEnabled) {
fName = name;
fDesc = desc;
fOwner = owner;
ftransactionEnabled = transactionEnabled;
fReaders = null;
fWriters = null;
}
@Override
public String getOwner() {
return fOwner;
}
@Override
public NsaAcl getReaderAcl() {
return fReaders;
}
@Override
public NsaAcl getWriterAcl() {
return fWriters;
}
@Override
public void checkUserRead(NsaApiKey user) throws AccessDeniedException {
if (fReaders != null && (user == null || !fReaders.canUser(user.getKey()))) {
throw new AccessDeniedException(user == null ? "" : user.getKey());
}
}
@Override
public void checkUserWrite(NsaApiKey user) throws AccessDeniedException {
if (fWriters != null && (user == null || !fWriters.canUser(user.getKey()))) {
throw new AccessDeniedException(user == null ? "" : user.getKey());
}
}
@Override
public String getName() {
return fName;
}
@Override
public String getDescription() {
return fDesc;
}
@Override
public void permitWritesFromUser(String publisherId, NsaApiKey asUser) throws AccessDeniedException {
if (!fOwner.equals(asUser.getKey())) {
throw new AccessDeniedException(accessDenied + fName);
}
if (fWriters == null) {
fWriters = new NsaAcl();
}
fWriters.add(publisherId);
}
@Override
public void denyWritesFromUser(String publisherId, NsaApiKey asUser) throws AccessDeniedException {
if (!fOwner.equals(asUser.getKey())) {
throw new AccessDeniedException(accessDenied + fName);
}
fWriters.remove(publisherId);
}
@Override
public void permitReadsByUser(String consumerId, NsaApiKey asUser) throws AccessDeniedException {
if (!fOwner.equals(asUser.getKey())) {
throw new AccessDeniedException(accessDenied + fName);
}
if (fReaders == null) {
fReaders = new NsaAcl();
}
fReaders.add(consumerId);
}
@Override
public void denyReadsByUser(String consumerId, NsaApiKey asUser) throws AccessDeniedException {
if (!fOwner.equals(asUser.getKey())) {
throw new AccessDeniedException(accessDenied + fName);
}
fReaders.remove(consumerId);
}
@Override
public boolean isTransactionEnabled() {
return ftransactionEnabled;
}
@Override
public Set<String> getOwners() {
final TreeSet<String> set = new TreeSet<> ();
set.add ( fOwner );
return set;
}
}
}
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