Class DiscriminatingNameMapper

    • Field Detail

      • CONFIG_PROP_DISCRIMINATOR

        private static final java.lang.String CONFIG_PROP_DISCRIMINATOR
        Configuration property to pass in discriminator
        See Also:
        Constant Field Values
      • CONFIG_PROP_HOSTNAME

        private static final java.lang.String CONFIG_PROP_HOSTNAME
        Configuration property to pass in hostname
        See Also:
        Constant Field Values
      • DEFAULT_DISCRIMINATOR_DIGEST

        private static final java.lang.String DEFAULT_DISCRIMINATOR_DIGEST
        See Also:
        Constant Field Values
      • DEFAULT_HOSTNAME

        private static final java.lang.String DEFAULT_HOSTNAME
        See Also:
        Constant Field Values
      • LOGGER

        private static final org.slf4j.Logger LOGGER
      • hostname

        private final java.lang.String hostname
    • Constructor Detail

      • DiscriminatingNameMapper

        public DiscriminatingNameMapper​(NameMapper delegate)
    • Method Detail

      • isFileSystemFriendly

        public boolean isFileSystemFriendly()
        Description copied from interface: NameMapper
        Returns true if lock names returned by this lock name mapper are file system friendly, can be used as file names and paths.
        Specified by:
        isFileSystemFriendly in interface NameMapper
      • nameLocks

        public java.util.Collection<java.lang.String> nameLocks​(RepositorySystemSession session,
                                                                java.util.Collection<? extends Artifact> artifacts,
                                                                java.util.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.

        There is no requirement of any kind of "parity" between input element count (sum of two collections, that is) and output collection size, just the returned upper size limit is defined (sum of the passed in two collections size). If returned collection is empty, no locking will happen, if single element, one lock will be used, if two then two named locks will be used etc.

        Note: name mapper must not use same string for artifacts and metadata, so even the simplest possible implementation like StaticNameMapper uses two different static strings.

        Specified by:
        nameLocks in interface NameMapper
      • getHostname

        private java.lang.String getHostname()