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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 org.apache.maven.execution.MavenSession;
23  import org.apache.maven.plugin.LegacySupport;
24  import org.codehaus.plexus.component.annotations.Component;
25  import org.sonatype.aether.RepositorySystemSession;
26  
27  /**
28   * Helps to provide backward-compatibility with plugins that use legacy components. <strong>Warning:</strong> This is an
29   * internal utility component that is only public for technical reasons, it is not part of the public API. In
30   * particular, this component can be changed or deleted without prior notice.
31   * 
32   * @since 3.0
33   * @author Benjamin Bentmann
34   */
35  @Component( role = LegacySupport.class )
36  public class DefaultLegacySupport
37      implements LegacySupport
38  {
39  
40      private static final ThreadLocal<MavenSession[]> session = new InheritableThreadLocal<MavenSession[]>();
41  
42      public void setSession( MavenSession session )
43      {
44          if ( session == null )
45          {
46              MavenSession[] oldSession = DefaultLegacySupport.session.get();
47              if ( oldSession != null )
48              {
49                  oldSession[0] = null;
50                  DefaultLegacySupport.session.remove();
51              }
52          }
53          else
54          {
55              DefaultLegacySupport.session.set( new MavenSession[] { session } );
56          }
57      }
58  
59      public MavenSession getSession()
60      {
61          MavenSession[] currentSession = DefaultLegacySupport.session.get();
62          return currentSession != null ? currentSession[0] : null;
63      }
64  
65      public RepositorySystemSession getRepositorySession()
66      {
67          MavenSession session = getSession();
68          return ( session != null ) ? session.getRepositorySession() : null;
69      }
70  
71  }