/*
* Copyright (C) 2015 hops.io.
*
* 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.
*/
package io.hops.transaction.lock;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
public class HdfsTransactionLocks implements TransactionLocks {
private final Map<Lock.Type, Lock> locks;
public HdfsTransactionLocks() {
this.locks = new EnumMap<Lock.Type, Lock>(Lock.Type.class);
}
@Override
public TransactionLocks add(Lock lock) {
if (locks.containsKey(lock.getType())) {
throw new IllegalArgumentException(
"The same lock cannot be added " + "twice!");
}
locks.put(lock.getType(), lock);
return this;
}
@Override
public TransactionLocks add(Collection<Lock> locks) {
for (Lock lock : locks) {
add(lock);
}
return this;
}
@Override
public boolean containsLock(Lock.Type lock) {
return locks.containsKey(lock);
}
@Override
public Lock getLock(Lock.Type type) throws LockNotAddedException {
if (!locks.containsKey(type)) {
throw new LockNotAddedException(
"Trying to get a lock which was not " + "added.");
}
return locks.get(type);
}
public List<Lock> getSortedLocks() {
List<Lock> lks = new ArrayList<Lock>(locks.values());
Collections.sort(lks);
return lks;
}
}