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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   * Direct provider of {@link ISemaphore} instances: it simply uses the passed in lock name to create semaphore name out
27   * of it. This implies, that as many lock names are requested from it, this class will create as many semaphores in
28   * Hazelcast.
29   */
30  public class DirectHazelcastSemaphoreProvider extends HazelcastSemaphoreProvider {
31      @Override
32      public ISemaphore acquireSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key) {
33          return hazelcastInstance.getCPSubsystem().getSemaphore(NAME_PREFIX + key.name());
34      }
35  
36      @Override
37      public void releaseSemaphore(HazelcastInstance hazelcastInstance, NamedLockKey key, ISemaphore semaphore) {
38          // nothing
39      }
40  }