1 package org.apache.maven.artifact.transform;
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22 import org.apache.maven.artifact.Artifact;
23 import org.apache.maven.artifact.deployer.ArtifactDeploymentException;
24 import org.apache.maven.artifact.repository.ArtifactRepository;
25 import org.apache.maven.artifact.repository.metadata.Metadata;
26 import org.apache.maven.artifact.repository.metadata.RepositoryMetadata;
27 import org.apache.maven.artifact.repository.metadata.RepositoryMetadataResolutionException;
28 import org.apache.maven.artifact.repository.metadata.Snapshot;
29 import org.apache.maven.artifact.repository.metadata.SnapshotArtifactRepositoryMetadata;
30 import org.apache.maven.artifact.repository.metadata.Versioning;
31 import org.apache.maven.artifact.resolver.ArtifactResolutionException;
32 import org.codehaus.plexus.util.StringUtils;
33
34 import java.text.DateFormat;
35 import java.text.SimpleDateFormat;
36 import java.util.Date;
37 import java.util.List;
38 import java.util.TimeZone;
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46 public class SnapshotTransformation
47 extends AbstractVersionTransformation
48 {
49 private String deploymentTimestamp;
50
51 private static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone( "UTC" );
52
53 private static final String UTC_TIMESTAMP_PATTERN = "yyyyMMdd.HHmmss";
54
55 public void transformForResolve( Artifact artifact, List remoteRepositories, ArtifactRepository localRepository )
56 throws ArtifactResolutionException
57 {
58
59 if ( artifact.isSnapshot() && artifact.getBaseVersion().equals( artifact.getVersion() ) )
60 {
61 try
62 {
63 String version = resolveVersion( artifact, localRepository, remoteRepositories );
64 artifact.updateVersion( version, localRepository );
65 }
66 catch ( RepositoryMetadataResolutionException e )
67 {
68 throw new ArtifactResolutionException( e.getMessage(), artifact, e );
69 }
70 }
71 }
72
73 public void transformForInstall( Artifact artifact, ArtifactRepository localRepository )
74 {
75 if ( artifact.isSnapshot() )
76 {
77 Snapshot snapshot = new Snapshot();
78 snapshot.setLocalCopy( true );
79 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata( artifact, snapshot );
80
81 artifact.addMetadata( metadata );
82 }
83 }
84
85 public void transformForDeployment( Artifact artifact, ArtifactRepository remoteRepository,
86 ArtifactRepository localRepository )
87 throws ArtifactDeploymentException
88 {
89 if ( artifact.isSnapshot() )
90 {
91 Snapshot snapshot = new Snapshot();
92 if ( remoteRepository.isUniqueVersion() )
93 {
94 snapshot.setTimestamp( getDeploymentTimestamp() );
95 }
96
97
98 try
99 {
100 int buildNumber = resolveLatestSnapshotBuildNumber( artifact, localRepository, remoteRepository );
101
102 snapshot.setBuildNumber( buildNumber + 1 );
103 }
104 catch ( RepositoryMetadataResolutionException e )
105 {
106 throw new ArtifactDeploymentException( "Error retrieving previous build number for artifact '" +
107 artifact.getDependencyConflictId() + "': " + e.getMessage(), e );
108 }
109
110 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata( artifact, snapshot );
111
112 artifact.setResolvedVersion(
113 constructVersion( metadata.getMetadata().getVersioning(), artifact.getBaseVersion() ) );
114
115 artifact.addMetadata( metadata );
116 }
117 }
118
119 public String getDeploymentTimestamp()
120 {
121 if ( deploymentTimestamp == null )
122 {
123 deploymentTimestamp = getUtcDateFormatter().format( new Date() );
124 }
125 return deploymentTimestamp;
126 }
127
128 protected String constructVersion( Versioning versioning, String baseVersion )
129 {
130 String version = null;
131 Snapshot snapshot = versioning.getSnapshot();
132 if ( snapshot != null )
133 {
134 if ( snapshot.getTimestamp() != null && snapshot.getBuildNumber() > 0 )
135 {
136 String newVersion = snapshot.getTimestamp() + "-" + snapshot.getBuildNumber();
137 version = StringUtils.replace( baseVersion, "SNAPSHOT", newVersion );
138 }
139 else
140 {
141 version = baseVersion;
142 }
143 }
144 return version;
145 }
146
147 private int resolveLatestSnapshotBuildNumber( Artifact artifact, ArtifactRepository localRepository,
148 ArtifactRepository remoteRepository )
149 throws RepositoryMetadataResolutionException
150 {
151 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata( artifact );
152
153 if ( !wagonManager.isOnline() )
154 {
155
156 throw new RepositoryMetadataResolutionException(
157 "System is offline. Cannot resolve metadata:\n" + metadata.extendedToString() + "\n\n" );
158 }
159
160 getLogger().info( "Retrieving previous build number from " + remoteRepository.getId() );
161 repositoryMetadataManager.resolveAlways( metadata, localRepository, remoteRepository );
162
163 int buildNumber = 0;
164 Metadata repoMetadata = metadata.getMetadata();
165 if ( ( repoMetadata != null )
166 && ( repoMetadata.getVersioning() != null && repoMetadata.getVersioning().getSnapshot() != null ) )
167 {
168 buildNumber = repoMetadata.getVersioning().getSnapshot().getBuildNumber();
169 }
170 return buildNumber;
171 }
172
173 public static DateFormat getUtcDateFormatter()
174 {
175 DateFormat utcDateFormatter = new SimpleDateFormat( UTC_TIMESTAMP_PATTERN );
176 utcDateFormatter.setTimeZone( UTC_TIME_ZONE );
177 return utcDateFormatter;
178 }
179 }