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1   package org.apache.maven.repository.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.io.File;
23  import java.text.DateFormat;
24  import java.text.SimpleDateFormat;
25  import java.util.ArrayList;
26  import java.util.Collection;
27  import java.util.Date;
28  import java.util.LinkedHashMap;
29  import java.util.Map;
30  import java.util.TimeZone;
31  
32  import org.apache.maven.artifact.repository.metadata.Metadata;
33  import org.apache.maven.artifact.repository.metadata.Snapshot;
34  import org.apache.maven.artifact.repository.metadata.SnapshotVersion;
35  import org.apache.maven.artifact.repository.metadata.Versioning;
36  import org.sonatype.aether.artifact.Artifact;
37  
38  /**
39   * @author Benjamin Bentmann
40   */
41  final class RemoteSnapshotMetadata
42      extends MavenMetadata
43  {
44  
45      private static final String SNAPSHOT = "SNAPSHOT";
46  
47      private final Collection<Artifact> artifacts = new ArrayList<Artifact>();
48  
49      private final Map<String, SnapshotVersion> versions = new LinkedHashMap<String, SnapshotVersion>();
50  
51      private final boolean legacyFormat;
52  
53      public RemoteSnapshotMetadata( Artifact artifact, boolean legacyFormat )
54      {
55          super( createMetadata( artifact, legacyFormat ), null );
56          this.legacyFormat = legacyFormat;
57      }
58  
59      private RemoteSnapshotMetadata( Metadata metadata, File file, boolean legacyFormat )
60      {
61          super( metadata, file );
62          this.legacyFormat = legacyFormat;
63      }
64  
65      private static Metadata createMetadata( Artifact artifact, boolean legacyFormat )
66      {
67          Metadata metadata = new Metadata();
68          if ( !legacyFormat )
69          {
70              metadata.setModelVersion( "1.1.0" );
71          }
72          metadata.setGroupId( artifact.getGroupId() );
73          metadata.setArtifactId( artifact.getArtifactId() );
74          metadata.setVersion( artifact.getBaseVersion() );
75  
76          return metadata;
77      }
78  
79      public void bind( Artifact artifact )
80      {
81          artifacts.add( artifact );
82      }
83  
84      public MavenMetadata setFile( File file )
85      {
86          return new RemoteSnapshotMetadata( metadata, file, legacyFormat );
87      }
88  
89      public Object getKey()
90      {
91          return getGroupId() + ':' + getArtifactId() + ':' + getVersion();
92      }
93  
94      public static Object getKey( Artifact artifact )
95      {
96          return artifact.getGroupId() + ':' + artifact.getArtifactId() + ':' + artifact.getBaseVersion();
97      }
98  
99      public String getExpandedVersion( Artifact artifact )
100     {
101         String key = getKey( artifact.getClassifier(), artifact.getExtension() );
102         return versions.get( key ).getVersion();
103     }
104 
105     @Override
106     protected void merge( Metadata recessive )
107     {
108         Snapshot snapshot;
109         String lastUpdated = "";
110 
111         if ( metadata.getVersioning() == null )
112         {
113             DateFormat utcDateFormatter = new SimpleDateFormat( "yyyyMMdd.HHmmss" );
114             utcDateFormatter.setTimeZone( TimeZone.getTimeZone( "UTC" ) );
115 
116             snapshot = new Snapshot();
117             snapshot.setBuildNumber( getBuildNumber( recessive ) + 1 );
118             snapshot.setTimestamp( utcDateFormatter.format( new Date() ) );
119 
120             Versioning versioning = new Versioning();
121             versioning.setSnapshot( snapshot );
122             versioning.setLastUpdated( snapshot.getTimestamp().replace( ".", "" ) );
123             lastUpdated = versioning.getLastUpdated();
124 
125             metadata.setVersioning( versioning );
126         }
127         else
128         {
129             snapshot = metadata.getVersioning().getSnapshot();
130             lastUpdated = metadata.getVersioning().getLastUpdated();
131         }
132 
133         for ( Artifact artifact : artifacts )
134         {
135             String version = artifact.getVersion();
136 
137             if ( version.endsWith( SNAPSHOT ) )
138             {
139                 String qualifier = snapshot.getTimestamp() + "-" + snapshot.getBuildNumber();
140                 version = version.substring( 0, version.length() - SNAPSHOT.length() ) + qualifier;
141             }
142 
143             SnapshotVersion sv = new SnapshotVersion();
144             sv.setClassifier( artifact.getClassifier() );
145             sv.setExtension( artifact.getExtension() );
146             sv.setVersion( version );
147             sv.setUpdated( lastUpdated );
148             versions.put( getKey( sv.getClassifier(), sv.getExtension() ), sv );
149         }
150 
151         artifacts.clear();
152 
153         Versioning versioning = recessive.getVersioning();
154         if ( versioning != null )
155         {
156             for ( SnapshotVersion sv : versioning.getSnapshotVersions() )
157             {
158                 String key = getKey( sv.getClassifier(), sv.getExtension() );
159                 if ( !versions.containsKey( key ) )
160                 {
161                     versions.put( key, sv );
162                 }
163             }
164         }
165 
166         if ( !legacyFormat )
167         {
168             metadata.getVersioning().setSnapshotVersions( new ArrayList<SnapshotVersion>( versions.values() ) );
169         }
170     }
171 
172     private String getKey( String classifier, String extension )
173     {
174         return classifier + ':' + extension;
175     }
176 
177     private static int getBuildNumber( Metadata metadata )
178     {
179         int number = 0;
180 
181         Versioning versioning = metadata.getVersioning();
182         if ( versioning != null )
183         {
184             Snapshot snapshot = versioning.getSnapshot();
185             if ( snapshot != null && snapshot.getBuildNumber() > 0 )
186             {
187                 number = snapshot.getBuildNumber();
188             }
189         }
190 
191         return number;
192     }
193 
194     public String getGroupId()
195     {
196         return metadata.getGroupId();
197     }
198 
199     public String getArtifactId()
200     {
201         return metadata.getArtifactId();
202     }
203 
204     public String getVersion()
205     {
206         return metadata.getVersion();
207     }
208 
209     public Nature getNature()
210     {
211         return Nature.SNAPSHOT;
212     }
213 
214 }