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