org.eclipse.aether.named.hazelcast.DirectHazelcastSemaphoreProvider Maven / Gradle / Ivy

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A synchronization utility implementation using Hazelcast.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.eclipse.aether.named.hazelcast;

import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.cp.ISemaphore;
import org.eclipse.aether.named.NamedLockKey;

/**
 * Direct provider of {@link ISemaphore} instances: it simply uses the passed in lock name to create semaphore name out
 * of it. This implies, that as many lock names are requested from it, this class will create as many semaphores in
 * Hazelcast.
 */
public class DirectHazelcastSemaphoreProvider extends HazelcastSemaphoreProvider {
    @Override
    public ISemaphore acquireSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key) {
        return hazelcastInstance.getCPSubsystem().getSemaphore(NAME_PREFIX + key.name());
    }

    @Override
    public void releaseSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key, ISemaphore semaphore) {
        // nothing
    }
}