Class DiscriminatingNameMapper

java.lang.Object
org.eclipse.aether.internal.impl.synccontext.named.DiscriminatingNameMapper
All Implemented Interfaces:
NameMapper

@Singleton @Named("discriminating") public class DiscriminatingNameMapper extends Object implements NameMapper
Discriminating NameMapper, that wraps another NameMapper and adds a "discriminator" as prefix, that makes lock names unique including the hostname and local repository (by default). The discriminator may be passed in via RepositorySystemSession or is automatically calculated based on the local hostname and repository path. The implementation retains order of collection elements as it got it from NameMapper.nameLocks(RepositorySystemSession, Collection, Collection) method.

The default setup wraps GAVNameMapper, but manually may be created any instance needed.

  • Field Details

  • Constructor Details

    • DiscriminatingNameMapper

      @Inject public DiscriminatingNameMapper(@Named("gav") NameMapper nameMapper)
  • Method Details

    • nameLocks

      public Collection<String> nameLocks(RepositorySystemSession session, Collection<? extends Artifact> artifacts, Collection<? extends Metadata> metadatas)
      Description copied from interface: NameMapper
      Creates (opaque) names for passed in artifacts and metadata. Returned collection has max size of sum of the passed in artifacts and metadata collections, or less. If an empty collection is returned, there will be no locking happening. Never returns null. The resulting collection MUST BE "stable" (always sorted by same criteria) to avoid deadlocks by acquiring locks in same order, essentially disregarding the order of the input collections.
      Specified by:
      nameLocks in interface NameMapper
    • getHostname

      private String getHostname()
    • createDiscriminator

      private String createDiscriminator(RepositorySystemSession session)