org.hyperic.hq.events.server.session
Class CounterExecutionStrategy

java.lang.Object
  org.hyperic.hq.events.server.session.CounterExecutionStrategy

All Implemented Interfaces:

ExecutionStrategy

public class CounterExecutionStrategy
extends java.lang.Object
implements ExecutionStrategy

Implementation of ExecutionStrategy that fires an AlertConditionsSatisfiedZEvent when a certain number of events have occurred within a given time window. Logic originally kept in a CounterTrigger class.

Constructor Summary

CounterExecutionStrategy(long count, long timeRange, ZeventEnqueuer zeventEnqueuer)

Method Summary

void	conditionsSatisfied(AlertConditionsSatisfiedZEvent event) Indicates that all conditions associated with an alert definition have been met
java.io.Serializable	getState()
void	initialize(java.io.Serializable initialState) Initializes this strategy

Methods inherited from class java.lang.Object

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

Constructor Detail

CounterExecutionStrategy

public CounterExecutionStrategy(long count,
                                long timeRange,
                                ZeventEnqueuer zeventEnqueuer)

Parameters:

count - The number of times the alert conditions must be satisfied

timeRange - The time window (in milliseconds) in which the specified count of alert conditions must be satisfied.

zeventEnqueuer - The ZeventEnqueuer to use for sending AlertConditionsSatisfiedZEvents

Method Detail

conditionsSatisfied

public void conditionsSatisfied(AlertConditionsSatisfiedZEvent event)

Description copied from interface: ExecutionStrategy

Indicates that all conditions associated with an alert definition have been met

Specified by:

conditionsSatisfied in interface ExecutionStrategy

Parameters:

event - An AlertConditionsSatisfiedZEvent to process

getState

public java.io.Serializable getState()

Specified by:

getState in interface ExecutionStrategy

Returns:

Any state held by this strategy that should be persisted between server restarts. May be null if no state saved.

initialize

public void initialize(java.io.Serializable initialState)

Description copied from interface: ExecutionStrategy

Initializes this strategy

Specified by:

initialize in interface ExecutionStrategy

Parameters:

initialState - Any state that was saved by the strategy with this alertDefinitionId the last time the server was shutdown. May be null if no state saved.