org.apache.aurora.scheduler.storage.mem.MemLockStore.java Source code

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Here is the source code for org.apache.aurora.scheduler.storage.mem.MemLockStore.java

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/**
 * Copyright 2013 Apache Software Foundation
 *
 * 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 org.apache.aurora.scheduler.storage.mem;

import java.util.Map;
import java.util.Set;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;

import org.apache.aurora.scheduler.storage.LockStore;
import org.apache.aurora.scheduler.storage.entities.ILock;
import org.apache.aurora.scheduler.storage.entities.ILockKey;

/**
 * An in-memory lock store.
 */
class MemLockStore implements LockStore.Mutable {

    private final Map<ILockKey, ILock> locks = Maps.newConcurrentMap();

    @Override
    public void saveLock(ILock lock) {
        locks.put(lock.getKey(), lock);
    }

    @Override
    public void removeLock(ILockKey lockKey) {
        locks.remove(lockKey);
    }

    @Override
    public void deleteLocks() {
        locks.clear();
    }

    @Override
    public Set<ILock> fetchLocks() {
        return ImmutableSet.copyOf(locks.values());
    }

    @Override
    public Optional<ILock> fetchLock(ILockKey lockKey) {
        return Optional.fromNullable(locks.get(lockKey));
    }
}