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19 package org.apache.maven.repository.legacy.resolver.transform;
20
21 import java.text.DateFormat;
22 import java.text.SimpleDateFormat;
23 import java.util.Date;
24 import java.util.GregorianCalendar;
25 import java.util.TimeZone;
26 import org.apache.maven.artifact.Artifact;
27 import org.apache.maven.artifact.deployer.ArtifactDeploymentException;
28 import org.apache.maven.artifact.repository.ArtifactRepository;
29 import org.apache.maven.artifact.repository.RepositoryRequest;
30 import org.apache.maven.artifact.repository.metadata.Metadata;
31 import org.apache.maven.artifact.repository.metadata.RepositoryMetadata;
32 import org.apache.maven.artifact.repository.metadata.RepositoryMetadataResolutionException;
33 import org.apache.maven.artifact.repository.metadata.Snapshot;
34 import org.apache.maven.artifact.repository.metadata.SnapshotArtifactRepositoryMetadata;
35 import org.apache.maven.artifact.repository.metadata.Versioning;
36 import org.apache.maven.artifact.resolver.ArtifactResolutionException;
37 import org.codehaus.plexus.component.annotations.Component;
38 import org.codehaus.plexus.util.StringUtils;
39
40
41
42
43
44 @Component(role = ArtifactTransformation.class, hint = "snapshot")
45 public class SnapshotTransformation extends AbstractVersionTransformation {
46 private static final String DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT = "yyyyMMdd.HHmmss";
47
48 private static final TimeZone DEFAULT_SNAPSHOT_TIME_ZONE = TimeZone.getTimeZone("Etc/UTC");
49
50 private String deploymentTimestamp;
51
52 public void transformForResolve(Artifact artifact, RepositoryRequest request) throws ArtifactResolutionException {
53
54 if (artifact.isSnapshot() && artifact.getBaseVersion().equals(artifact.getVersion())) {
55 try {
56 String version = resolveVersion(artifact, request);
57 artifact.updateVersion(version, request.getLocalRepository());
58 } catch (RepositoryMetadataResolutionException e) {
59 throw new ArtifactResolutionException(e.getMessage(), artifact, e);
60 }
61 }
62 }
63
64 public void transformForInstall(Artifact artifact, ArtifactRepository localRepository) {
65 if (artifact.isSnapshot()) {
66 Snapshot snapshot = new Snapshot();
67 snapshot.setLocalCopy(true);
68 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact, snapshot);
69
70 artifact.addMetadata(metadata);
71 }
72 }
73
74 public void transformForDeployment(
75 Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository)
76 throws ArtifactDeploymentException {
77 if (artifact.isSnapshot()) {
78 Snapshot snapshot = new Snapshot();
79
80
81 snapshot.setTimestamp(getDeploymentTimestamp());
82
83
84 try {
85 int buildNumber = resolveLatestSnapshotBuildNumber(artifact, localRepository, remoteRepository);
86
87 snapshot.setBuildNumber(buildNumber + 1);
88 } catch (RepositoryMetadataResolutionException e) {
89 throw new ArtifactDeploymentException(
90 "Error retrieving previous build number for artifact '" + artifact.getDependencyConflictId()
91 + "': " + e.getMessage(),
92 e);
93 }
94
95 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact, snapshot);
96
97 artifact.setResolvedVersion(
98 constructVersion(metadata.getMetadata().getVersioning(), artifact.getBaseVersion()));
99
100 artifact.addMetadata(metadata);
101 }
102 }
103
104 public String getDeploymentTimestamp() {
105 if (deploymentTimestamp == null) {
106 deploymentTimestamp = getUtcDateFormatter().format(new Date());
107 }
108 return deploymentTimestamp;
109 }
110
111 protected String constructVersion(Versioning versioning, String baseVersion) {
112 String version = null;
113 Snapshot snapshot = versioning.getSnapshot();
114 if (snapshot != null) {
115 if (snapshot.getTimestamp() != null && snapshot.getBuildNumber() > 0) {
116 String newVersion = snapshot.getTimestamp() + "-" + snapshot.getBuildNumber();
117 version = StringUtils.replace(baseVersion, Artifact.SNAPSHOT_VERSION, newVersion);
118 } else {
119 version = baseVersion;
120 }
121 }
122 return version;
123 }
124
125 private int resolveLatestSnapshotBuildNumber(
126 Artifact artifact, ArtifactRepository localRepository, ArtifactRepository remoteRepository)
127 throws RepositoryMetadataResolutionException {
128 RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact);
129
130 getLogger().info("Retrieving previous build number from " + remoteRepository.getId());
131 repositoryMetadataManager.resolveAlways(metadata, localRepository, remoteRepository);
132
133 int buildNumber = 0;
134 Metadata repoMetadata = metadata.getMetadata();
135 if ((repoMetadata != null)
136 && (repoMetadata.getVersioning() != null
137 && repoMetadata.getVersioning().getSnapshot() != null)) {
138 buildNumber = repoMetadata.getVersioning().getSnapshot().getBuildNumber();
139 }
140 return buildNumber;
141 }
142
143 public static DateFormat getUtcDateFormatter() {
144 DateFormat utcDateFormatter = new SimpleDateFormat(DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT);
145 utcDateFormatter.setCalendar(new GregorianCalendar());
146 utcDateFormatter.setTimeZone(DEFAULT_SNAPSHOT_TIME_ZONE);
147 return utcDateFormatter;
148 }
149 }