Package org.apache.jackrabbit.oak.segment.file.tar

Interface CleanupContext

public interface CleanupContext
Initial data and logic needed for the cleanup of unused TAR entries.

  • Method Summary

    Modifier and Type
    Method
    Description
    Collection<UUID>
    initialReferences()
    Initial references to TAR entries.
    boolean
    shouldFollow(UUID from, UUID to)
    Determine if a reference between two entries should be followed, and if the referenced entry should be marked.
    boolean
    shouldReclaim(UUID id, GCGeneration generation, boolean referenced)
    Check if an entry should be reclaimed.

  • Method Details

    • initialReferences

      Collection<UUID> initialReferences()
      Initial references to TAR entries. These references represent the entries that are currently in use. The transitive closure of these entries will be computed by the cleanup algorithm.
      Returns:
      An instance of Collection.

    • shouldReclaim

      boolean shouldReclaim(UUID id, GCGeneration generation, boolean referenced)
      Check if an entry should be reclaimed.
      Parameters:
      id - The identifier of the entry.
      generation - The generation of the entry.
      referenced - If this entry was referenced directly or indirectly by the initial set of references.
      Returns:
      true if the entry should be reclaimed, false otherwise.

    • shouldFollow

      boolean shouldFollow(UUID from, UUID to)
      Determine if a reference between two entries should be followed, and if the referenced entry should be marked.
      Parameters:
      from - The identifier of the referencing entry.
      to - The identifier of the referenced entry.
      Returns:
      true if the reference should be followed, false otherwise.