Record Class RebalancePlan

java.lang.Object
java.lang.Record
com.loomcache.server.sharding.RebalancePlan
Record Components:
moves - the ordered list of partition moves (defensively copied, never null)
public record RebalancePlan(List<PartitionMove> moves) extends Record
An immutable plan describing partition moves needed to rebalance across Raft groups.

The plan is computed by PartitionRebalancer.calculatePlan(int, int) and executed by PartitionRebalancer.executeMigration(RebalancePlan).

Since:
2.0

  • Constructor Details

    • RebalancePlan

      public RebalancePlan(List<PartitionMove> moves)
      Compact constructor with defensive copy.

  • Method Details

    • moveCount

      public int moveCount()
      Returns the number of partition moves in this plan.
      Returns:
      the move count (always >= 0)

    • isEmpty

      public boolean isEmpty()
      Returns true if no migrations are needed.
      Returns:
      true if the plan contains zero moves

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • moves

      public List<PartitionMove> moves()
      Returns the value of the moves record component.
      Returns:
      the value of the moves record component