Package org.jgroups.protocols.relay

Class SiteMaster

java.lang.Object
org.jgroups.util.UUID
org.jgroups.util.FlagsUUID
org.jgroups.util.ExtendedUUID
org.jgroups.protocols.relay.SiteUUID
org.jgroups.protocols.relay.SiteMaster
All Implemented Interfaces:
Comparable<Address>, Address, Constructable<UUID>, SiteAddress, SizeStreamable, Streamable
public class SiteMaster extends SiteUUID
Special address with the UUID part being 0: identifies the current (relay) coordinator of a given site. E,g, if we send a message with dest=SiteMaster(SFO) from site LON, then the message will be forwarded to the relay coordinator of the SFO site
Since:
3.2

  • Field Details

    • ALL_SMS

      protected static final SiteMaster ALL_SMS

    • HASH

      protected static final int HASH

  • Constructor Details

    • SiteMaster

      public SiteMaster()

    • SiteMaster

      public SiteMaster(String site)

  • Method Details

    • create

      public Supplier<? extends UUID> create()
      Description copied from interface: Constructable
      Creates an instance of the class implementing this interface
      Specified by:
      create in interface Constructable<UUID>
      Overrides:
      create in class SiteUUID

    • type

      public SiteAddress.Type type()
      Description copied from interface: SiteAddress
      Temporary kludge to avoid instanceof

    • isMulticast

      public boolean isMulticast()
      Description copied from interface: Address
      Whether or not this address causes a message to be sent to mulitple members. Typically, 'null' as destination sends the message to all members of a cluster, and a non-null address sends it to a single member. However, if a non-null destination address causes multicast behavior, this method needs to return true.
      Returns:
      True if a message with this address as destination is sent to multiple members, else false

    • isSiteMaster

      public boolean isSiteMaster()
      Description copied from interface: Address
      Whether or not this address is a SiteMaster. Kludgey workaround to avoid the use of instanceof SiteMaster.

      Will be removed once the type pollution issue (https://bugs.openjdk.org/browse/JDK-8180450) is fixed.

      Returns:
      true if this address is a site master, false otherwise

    • compareTo

      public int compareTo(Address other)
      Description copied from class: UUID
      Compares this UUID with the specified UUID.

      The first of two UUIDs is greater than the second if the most significant field in which the UUIDs differ is greater for the first UUID.

      Specified by:
      compareTo in interface Comparable<Address>
      Overrides:
      compareTo in class SiteUUID
      Parameters:
      other - UUID to which this UUID is to be compared
      Returns:
      -1, 0 or 1 as this UUID is less than, equal to, or greater than val

    • equals

      public boolean equals(Object obj)
      Description copied from class: UUID
      Compares this object to the specified object. The result is true if and only if the argument is not null, is a UUID object, and contains the same most- and least significant bits.
      Overrides:
      equals in class SiteUUID
      Parameters:
      obj - The object to be compared
      Returns:
      true if the objects are the same; false otherwise

    • hashCode

      public int hashCode()
      Description copied from class: UUID
      Returns a hash code for this UUID.
      Overrides:
      hashCode in class SiteUUID
      Returns:
      A hash code value for this UUID

    • copy

      public UUID copy()
      Overrides:
      copy in class SiteUUID

    • toString

      public String toString()
      Overrides:
      toString in class SiteUUID