001package org.eclipse.aether.named.hazelcast;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import com.hazelcast.core.HazelcastInstance;
023import com.hazelcast.cp.ISemaphore;
024
025/**
026 * Support class for providers of {@link ISemaphore} instances.
027 */
028public abstract class HazelcastSemaphoreProvider
029{
030    /**
031     * Name prefix recommended using for simpler configuration of Hazelcast.
032     */
033    protected static final String NAME_PREFIX = "maven:resolver:";
034
035    /**
036     * Invoked when new instance of semaphore needed for given name. must not return {@code null}.
037     */
038    public abstract ISemaphore acquireSemaphore( HazelcastInstance hazelcastInstance, String name );
039
040    /**
041     * Invoked when passed in semaphore associated with passed in name is not to be used anymore.
042     */
043    public abstract void releaseSemaphore( HazelcastInstance hazelcastInstance, String name, ISemaphore semaphore );
044}