1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.eclipse.aether.named.hazelcast;
20
21 import com.hazelcast.core.HazelcastInstance;
22 import com.hazelcast.cp.ISemaphore;
23 import org.eclipse.aether.named.NamedLockKey;
24
25 /**
26 * Support class for providers of {@link ISemaphore} instances.
27 */
28 public abstract class HazelcastSemaphoreProvider {
29 /**
30 * Name prefix recommended using for simpler configuration of Hazelcast.
31 */
32 protected static final String NAME_PREFIX = "maven:resolver:";
33
34 /**
35 * Invoked when new instance of semaphore needed for given key. must not return {@code null}.
36 */
37 public abstract ISemaphore acquireSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key);
38
39 /**
40 * Invoked when passed in semaphore associated with passed in key is not to be used anymore.
41 */
42 public abstract void releaseSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key, ISemaphore semaphore);
43 }