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.internal.impl.synccontext;
20
21 import javax.inject.Inject;
22 import javax.inject.Named;
23 import javax.inject.Singleton;
24
25 import org.eclipse.aether.RepositorySystemSession;
26 import org.eclipse.aether.SyncContext;
27 import org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactoryAdapterFactory;
28 import org.eclipse.aether.spi.synccontext.SyncContextFactory;
29
30 import static java.util.Objects.requireNonNull;
31
32 /**
33 * Default {@link SyncContextFactory} implementation that uses named locks.
34 * <p>
35 * The implementation relies fully on {@link NamedLockFactoryAdapterFactory} and all it does is just "stuff" the
36 * adapter instance into session, hence factory is called only when given session has no instance created.
37 */
38 @Singleton
39 @Named
40 public final class DefaultSyncContextFactory implements SyncContextFactory {
41 private final NamedLockFactoryAdapterFactory namedLockFactoryAdapterFactory;
42
43 /**
44 * Constructor used with DI, where factories are injected and selected based on key.
45 */
46 @Inject
47 public DefaultSyncContextFactory(final NamedLockFactoryAdapterFactory namedLockFactoryAdapterFactory) {
48 this.namedLockFactoryAdapterFactory = requireNonNull(namedLockFactoryAdapterFactory);
49 }
50
51 @Override
52 public SyncContext newInstance(final RepositorySystemSession session, final boolean shared) {
53 return namedLockFactoryAdapterFactory.getAdapter(session).newInstance(session, shared);
54 }
55 }