org.hawkular.alerts.engine.impl

Class AlertsEngineCache

java.lang.Object

org.hawkular.alerts.engine.impl.AlertsEngineCache

public class AlertsEngineCache
extends Object

Auxiliary cache for AlertsEngine implementation. It stores a lightweight cache with active dataIds and pointers to triggerIds and conditionIds for the current node. This cache allows to filter unnecessary data that is processed by the RulesEngine. This scenario works on single or distributed deployments. In distributed deployments this helps to avoid unnecessary processing.

Author:

Jay Shaughnessy, Lucas Ponce

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AlertsEngineCache.DataEntry

Constructor Summary

Constructors

Constructor and Description
AlertsEngineCache()

Method Summary

Modifier and Type	Method and Description
void	add(AlertsEngineCache.DataEntry dataEntry) Register a new DataEntry (triggerId,conditionId,dataId)
void	clear() Clear all cache entries.
boolean	isDataIdActive(String dataId) Check if a specific dataId is active on this node
void	remove(String tenantId, String triggerId) Remove all DataEntry for a specified trigger.

Methods inherited from class java.lang.Object

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

Constructor Detail

AlertsEngineCache

public AlertsEngineCache()

Method Detail

isDataIdActive

public boolean isDataIdActive(String dataId)

Check if a specific dataId is active on this node

Parameters:

dataId - to check if it has triggers deployed on this node

Returns:

true if it is active false otherwise

add

public void add(AlertsEngineCache.DataEntry dataEntry)

Register a new DataEntry (triggerId,conditionId,dataId)

Parameters:

dataEntry - to register on this node

remove

public void remove(String tenantId,
                   String triggerId)

Remove all DataEntry for a specified trigger.

Parameters:

triggerId - to remove

clear

public void clear()

Clear all cache entries.