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19 package org.eclipse.aether.named.hazelcast;
20
21 import java.util.concurrent.ConcurrentHashMap;
22 import java.util.concurrent.ConcurrentMap;
23 import java.util.concurrent.TimeUnit;
24
25 import com.hazelcast.core.HazelcastInstance;
26 import com.hazelcast.cp.ISemaphore;
27 import org.eclipse.aether.named.NamedLock;
28 import org.eclipse.aether.named.NamedLockKey;
29 import org.eclipse.aether.named.support.AdaptedSemaphoreNamedLock;
30 import org.eclipse.aether.named.support.AdaptedSemaphoreNamedLock.AdaptedSemaphore;
31 import org.eclipse.aether.named.support.NamedLockFactorySupport;
32
33 import static java.util.Objects.requireNonNull;
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41
42 @Deprecated
43 public class HazelcastSemaphoreNamedLockFactory extends NamedLockFactorySupport {
44 protected final HazelcastInstance hazelcastInstance;
45
46 protected final boolean manageHazelcast;
47
48 private final HazelcastSemaphoreProvider hazelcastSemaphoreProvider;
49
50 private final ConcurrentMap<NamedLockKey, ISemaphore> semaphores;
51
52 public HazelcastSemaphoreNamedLockFactory(
53 final HazelcastInstance hazelcastInstance,
54 final boolean manageHazelcast,
55 final HazelcastSemaphoreProvider hazelcastSemaphoreProvider) {
56 this.hazelcastInstance = requireNonNull(hazelcastInstance);
57 this.manageHazelcast = manageHazelcast;
58 this.hazelcastSemaphoreProvider = requireNonNull(hazelcastSemaphoreProvider);
59 this.semaphores = new ConcurrentHashMap<>();
60 }
61
62 @Override
63 protected AdaptedSemaphoreNamedLock createLock(final NamedLockKey key) {
64 ISemaphore semaphore = semaphores.computeIfAbsent(
65 key, k -> hazelcastSemaphoreProvider.acquireSemaphore(hazelcastInstance, key));
66 return new AdaptedSemaphoreNamedLock(key, this, new HazelcastSemaphore(semaphore));
67 }
68
69 @Override
70 protected void destroyLock(final NamedLock namedLock) {
71 if (namedLock instanceof AdaptedSemaphoreNamedLock) {
72 final NamedLockKey key = namedLock.key();
73 hazelcastSemaphoreProvider.releaseSemaphore(hazelcastInstance, key, semaphores.remove(key));
74 }
75 }
76
77 @Override
78 protected void doShutdown() {
79 if (manageHazelcast) {
80 hazelcastInstance.shutdown();
81 }
82 }
83
84 private static final class HazelcastSemaphore implements AdaptedSemaphore {
85 private final ISemaphore semaphore;
86
87 private HazelcastSemaphore(final ISemaphore semaphore) {
88 this.semaphore = semaphore;
89 }
90
91 @Override
92 public boolean tryAcquire(final int perms, final long time, final TimeUnit unit) throws InterruptedException {
93 return semaphore.tryAcquire(perms, time, unit);
94 }
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96 @Override
97 public void release(final int perms) {
98 semaphore.release(perms);
99 }
100 }
101 }