1 package org.apache.maven.plugin.internal;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.concurrent.atomic.AtomicReference;
23
24 import javax.inject.Named;
25 import javax.inject.Singleton;
26
27 import org.apache.maven.execution.MavenSession;
28 import org.apache.maven.plugin.LegacySupport;
29 import org.eclipse.aether.RepositorySystemSession;
30
31 /**
32 * Helps to provide backward-compatibility with plugins that use legacy components. <strong>Warning:</strong> This is an
33 * internal utility component that is only public for technical reasons, it is not part of the public API. In
34 * particular, this component can be changed or deleted without prior notice.
35 *
36 * @since 3.0
37 * @author Benjamin Bentmann
38 */
39 @Named
40 @Singleton
41 public class DefaultLegacySupport
42 implements LegacySupport
43 {
44
45 private static final ThreadLocal<AtomicReference<MavenSession>> SESSION =
46 new InheritableThreadLocal<>();
47
48 public void setSession( MavenSession session )
49 {
50 AtomicReference<MavenSession> reference = DefaultLegacySupport.SESSION.get();
51 if ( reference != null )
52 {
53 reference.set( null );
54 }
55
56 if ( session == null && reference != null )
57 {
58 DefaultLegacySupport.SESSION.remove();
59 }
60 else
61 {
62 DefaultLegacySupport.SESSION.set( new AtomicReference<>( session ) );
63 }
64 }
65
66 public MavenSession getSession()
67 {
68 AtomicReference<MavenSession> currentSession = DefaultLegacySupport.SESSION.get();
69 return currentSession != null ? currentSession.get() : null;
70 }
71
72 public RepositorySystemSession getRepositorySession()
73 {
74 MavenSession session = getSession();
75 return ( session != null ) ? session.getRepositorySession() : null;
76 }
77
78 }