Package org.jgroups.protocols.rules

Class CheckFDMonitor

  • All Implemented Interfaces:
    java.lang.Runnable
    public class CheckFDMonitor
extends Rule
    Rule which checks if the FD monitor is running when we have more than 1 member. If not, starts it. The rule uninstalls itself if no FD protocol is found.
    Since:
    3.3
    Author:
    Bela Ban

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected FD fd  

      • Fields inherited from class org.jgroups.protocols.rules.Rule

        log, sv

    • Constructor Summary

      Constructors 
      Constructor Description
      CheckFDMonitor()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String condition()
      Returns a description of the condition that led to Rule.eval() returning true
      java.lang.String description()
      Describes what the rules does
      boolean eval()
      Evaluates the condition.
      void init()
      Called when rule is installed
      java.lang.String name()
      Returns the name of the rule.
      java.lang.String toString()  
      void trigger()
      The action of the rule.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • fd

        protected FD fd

    • Constructor Detail

      • CheckFDMonitor

        public CheckFDMonitor()

    • Method Detail

      • name

        public java.lang.String name()
        Description copied from class: Rule
        Returns the name of the rule. Should be unique if a rule needs to be uninstalled
        Specified by:
        name in class Rule

      • description

        public java.lang.String description()
        Description copied from class: Rule
        Describes what the rules does
        Specified by:
        description in class Rule

      • init

        public void init()
        Description copied from class: Rule
        Called when rule is installed
        Overrides:
        init in class Rule

      • eval

        public boolean eval()
        Description copied from class: Rule
        Evaluates the condition. If true, the rule is triggered. If true, the next execution of Rule.condition() should return a non-null string
        Specified by:
        eval in class Rule

      • condition

        public java.lang.String condition()
        Description copied from class: Rule
        Returns a description of the condition that led to Rule.eval() returning true
        Specified by:
        condition in class Rule

      • trigger

        public void trigger()
             throws java.lang.Throwable
        Description copied from class: Rule
        The action of the rule. Triggered if Rule.eval() returned true
        Specified by:
        trigger in class Rule
        Throws:
        java.lang.Throwable

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object