Package org.apache.cassandra.db.guardrails

Class Predicates<T>

  • Type Parameters:
    T - the type of the values to be tested against predicates.
    public class Predicates<T>
extends Guardrail
    A guardrail based on two predicates.

    A Predicates guardrail defines (up to) 2 predicates, one at which a warning is issued, and another one at which a failure is triggered. If failure is triggered, warning is skipped.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static interface  Predicates.MessageProvider<T>
      A function used to build the warning or error message of a triggered Predicates guardrail.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void guard​(T value, ClientState state)
      Apply the guardrail to the provided value, triggering a warning or failure if appropriate.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • guard

        public void guard​(T value,
                  @Nullable
                  ClientState state)
        Apply the guardrail to the provided value, triggering a warning or failure if appropriate.
        Parameters:
        value - the value to check.