}
private Versioning readVersions( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
ArtifactRepository repository, VersionResult result )
{
Versioning versioning = null;
FileInputStream fis = null;
try
{
if ( metadata != null )
{
SyncContext syncContext = syncContextFactory.newInstance( session, true );
try
{
syncContext.acquire( null, Collections.singleton( metadata ) );
if ( metadata.getFile() != null && metadata.getFile().exists() )
{
fis = new FileInputStream( metadata.getFile() );
org.apache.maven.artifact.repository.metadata.Metadata m =
new MetadataXpp3Reader().read( fis, false );
versioning = m.getVersioning();
/*
* NOTE: Users occasionally misuse the id "local" for remote repos which screws up the metadata
* of the local repository. This is especially troublesome during snapshot resolution so we try
* to handle that gracefully.
*/
if ( versioning != null && repository instanceof LocalRepository )
{
if ( versioning.getSnapshot() != null && versioning.getSnapshot().getBuildNumber() > 0 )
{
Versioning repaired = new Versioning();
repaired.setLastUpdated( versioning.getLastUpdated() );
Snapshot snapshot = new Snapshot();
snapshot.setLocalCopy( true );
repaired.setSnapshot( snapshot );
versioning = repaired;
throw new IOException( "Snapshot information corrupted with remote repository data"
+ ", please verify that no remote repository uses the id '" + repository.getId()
+ "'" );
}
}
}
}
finally
{
syncContext.release();
}
}
}
catch ( Exception e )
{
invalidMetadata( session, trace, metadata, repository, e );
result.addException( e );
}
finally
{
IOUtil.close( fis );
}
return ( versioning != null ) ? versioning : new Versioning();
}