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19 package org.apache.maven.repository.internal;
20
21 import java.util.Collection;
22 import java.util.Collections;
23 import java.util.Date;
24 import java.util.LinkedHashMap;
25 import java.util.Map;
26
27 import org.eclipse.aether.RepositorySystemSession;
28 import org.eclipse.aether.artifact.Artifact;
29 import org.eclipse.aether.deployment.DeployRequest;
30 import org.eclipse.aether.impl.MetadataGenerator;
31 import org.eclipse.aether.metadata.Metadata;
32 import org.eclipse.aether.util.ConfigUtils;
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39 class RemoteSnapshotMetadataGenerator implements MetadataGenerator {
40
41 private final Map<Object, RemoteSnapshotMetadata> snapshots;
42
43 private final Date timestamp;
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45 RemoteSnapshotMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
46 timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");
47
48 snapshots = new LinkedHashMap<>();
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55
56 for (Metadata metadata : request.getMetadata()) {
57 if (metadata instanceof RemoteSnapshotMetadata) {
58 RemoteSnapshotMetadata snapshotMetadata = (RemoteSnapshotMetadata) metadata;
59 snapshots.put(snapshotMetadata.getKey(), snapshotMetadata);
60 }
61 }
62 }
63
64 @Override
65 public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
66 for (Artifact artifact : artifacts) {
67 if (artifact.isSnapshot()) {
68 Object key = RemoteSnapshotMetadata.getKey(artifact);
69 RemoteSnapshotMetadata snapshotMetadata = snapshots.get(key);
70 if (snapshotMetadata == null) {
71 snapshotMetadata = new RemoteSnapshotMetadata(artifact, timestamp);
72 snapshots.put(key, snapshotMetadata);
73 }
74 snapshotMetadata.bind(artifact);
75 }
76 }
77
78 return snapshots.values();
79 }
80
81 @Override
82 public Artifact transformArtifact(Artifact artifact) {
83 if (artifact.isSnapshot() && artifact.getVersion().equals(artifact.getBaseVersion())) {
84 Object key = RemoteSnapshotMetadata.getKey(artifact);
85 RemoteSnapshotMetadata snapshotMetadata = snapshots.get(key);
86 if (snapshotMetadata != null) {
87 artifact = artifact.setVersion(snapshotMetadata.getExpandedVersion(artifact));
88 }
89 }
90
91 return artifact;
92 }
93
94 @Override
95 public Collection<? extends Metadata> finish(Collection<? extends Artifact> artifacts) {
96 return Collections.emptyList();
97 }
98 }