org.hawkular.alerts.engine.impl

Class AlertsEngineImpl

java.lang.Object

org.hawkular.alerts.engine.impl.AlertsEngineImpl

All Implemented Interfaces:

AlertsEngine, PartitionDataListener, PartitionTriggerListener

public class AlertsEngineImpl
extends Object
implements AlertsEngine, PartitionTriggerListener, PartitionDataListener

Cassandra implementation for AlertsService. This implementation processes data asynchronously using a buffer queue.

Author:

Jay Shaughnessy, Lucas Ponce

Constructor Summary

Constructors

Constructor and Description
AlertsEngineImpl()

Method Summary

Modifier and Type	Method and Description
void	addTrigger(String tenantId, String triggerId) Notify AlertsEngine that a new trigger is going to be loaded.
void	clear() Reset session state.
ActionsService	getActions()
AlertsService	getAlertsService()
DefinitionsService	getDefinitions()
Trigger	getLoadedTrigger(Trigger trigger)
RulesEngine	getRules()
void	initServices()
void	onNewData(Collection<Data> data) Invoked when a new collection of Data has been received into the partition.
void	onNewData(Data data) Invoked when a new Data has been received into the partition.
void	onNewEvent(Event event) Invoked when a new Event has been received into the partition.
void	onNewEvents(Collection<Event> events) Invoked when a new collection of Events has been received into the partition.
void	onPartitionChange(Map<String,List<String>> partition, Map<String,List<String>> removed, Map<String,List<String>> added) Invoked when the topology has changed in the partition.
void	onTriggerChange(PartitionManager.Operation operation, String tenantId, String triggerId) Invoked on the node that holds the trigger when a trigger has been added, modified or removed.
void	reload() Reload all Triggers.
void	reloadTrigger(String tenantId, String triggerId) Reload the specified Trigger.
void	removeTrigger(String tenantId, String triggerId) Remove the specified Trigger from the engine.
void	sendData(Collection<Data> data) Send data into the alerting system for evaluation.
void	sendData(Data data) Send data into the alerting system for evaluation.
void	sendEvent(Event event) Send event into the alerting system for evaluation.
void	sendEvents(Collection<Event> events) Send event into the alerting system for evaluation.
void	setActions(ActionsService actions)
void	setAlertsService(AlertsService alertsService)
void	setDefinitions(DefinitionsService definitions)
void	setRules(RulesEngine rules)
void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Detail

AlertsEngineImpl

public AlertsEngineImpl()

Method Detail

getRules

public RulesEngine getRules()

setRules

public void setRules(RulesEngine rules)

getDefinitions

public DefinitionsService getDefinitions()

setDefinitions

public void setDefinitions(DefinitionsService definitions)

getActions

public ActionsService getActions()

setActions

public void setActions(ActionsService actions)

getAlertsService

public AlertsService getAlertsService()

setAlertsService

public void setAlertsService(AlertsService alertsService)

initServices

@PostConstruct
public void initServices()

shutdown

@PreDestroy
public void shutdown()

clear

public void clear()

Description copied from interface: AlertsEngine

Reset session state.

Specified by:

clear in interface AlertsEngine

reload

public void reload()

Description copied from interface: AlertsEngine

Reload all Triggers.

Specified by:

reload in interface AlertsEngine

addTrigger

public void addTrigger(String tenantId,
                       String triggerId)

Description copied from interface: AlertsEngine

Notify AlertsEngine that a new trigger is going to be loaded. This method is used for distributed scenarios, where the AlertsEngine can distribute the trigger on a node. For non-distributed scenarios, this call has not effect as trigger is loaded on local AlertsEngine on new additions or updates of dampening,conditions or existing triggers.

Specified by:

addTrigger in interface AlertsEngine

Parameters:

tenantId - Tenant where Trigger is stored

triggerId - Trigger id to be reloaded

reloadTrigger

public void reloadTrigger(String tenantId,
                          String triggerId)

Description copied from interface: AlertsEngine

Reload the specified Trigger. Removes any existing definition from the engine. If enabled then loads the firing condition set and dampening. If safetyEnabled then also loads the safety condition set and dampening.

Specified by:

reloadTrigger in interface AlertsEngine

Parameters:

tenantId - Tenant where Trigger is stored

triggerId - Trigger id to be reloaded

getLoadedTrigger

public Trigger getLoadedTrigger(Trigger trigger)

Specified by:

getLoadedTrigger in interface AlertsEngine

Parameters:

trigger - the trigger for which the loaded version is requested.

Returns:

the Trigger with the current engine state, or null if the trigger is not found in the engine

removeTrigger

public void removeTrigger(String tenantId,
                          String triggerId)

Description copied from interface: AlertsEngine

Remove the specified Trigger from the engine.

Specified by:

removeTrigger in interface AlertsEngine

Parameters:

tenantId - Tenant where Trigger is stored

triggerId - Trigger id to be removed

sendData

public void sendData(Collection<Data> data)

Description copied from interface: AlertsEngine

Send data into the alerting system for evaluation.

Specified by:

sendData in interface AlertsEngine

Parameters:

data - Not Null. The data to be evaluated by the alerting engine.

sendData

public void sendData(Data data)

Description copied from interface: AlertsEngine

Send data into the alerting system for evaluation.

Specified by:

sendData in interface AlertsEngine

Parameters:

data - Not Null. The data to be evaluated by the alerting engine.

sendEvent

public void sendEvent(Event event)

Description copied from interface: AlertsEngine

Send event into the alerting system for evaluation. Events are persisted after inference.

Specified by:

sendEvent in interface AlertsEngine

Parameters:

event - Not Null. The events to be avaluated and persisted by the alerting engine.

sendEvents

public void sendEvents(Collection<Event> events)

Description copied from interface: AlertsEngine

Send event into the alerting system for evaluation. Events are persisted after inference.

Specified by:

sendEvents in interface AlertsEngine

Parameters:

events - Not Null. The events to be avaluated and persisted by the alerting engine.

onNewData

public void onNewData(Data data)

Description copied from interface: PartitionDataListener

Invoked when a new Data has been received into the partition.

Specified by:

onNewData in interface PartitionDataListener

Parameters:

data - the new data received

onNewData

public void onNewData(Collection<Data> data)

Description copied from interface: PartitionDataListener

Invoked when a new collection of Data has been received into the partition.

Specified by:

onNewData in interface PartitionDataListener

Parameters:

data - the new data received

onNewEvent

public void onNewEvent(Event event)

Description copied from interface: PartitionDataListener

Invoked when a new Event has been received into the partition.

Specified by:

onNewEvent in interface PartitionDataListener

Parameters:

event - the new event received

onNewEvents

public void onNewEvents(Collection<Event> events)

Description copied from interface: PartitionDataListener

Invoked when a new collection of Events has been received into the partition.

Specified by:

onNewEvents in interface PartitionDataListener

Parameters:

events - the new events received

onTriggerChange

public void onTriggerChange(PartitionManager.Operation operation,
                            String tenantId,
                            String triggerId)

Description copied from interface: PartitionTriggerListener

Invoked on the node that holds the trigger when a trigger has been added, modified or removed.

Specified by:

onTriggerChange in interface PartitionTriggerListener

Parameters:

operation - the operation performed on the Trigger

tenantId - Tenant where Trigger is stored

triggerId - Trigger id

onPartitionChange

public void onPartitionChange(Map<String,List<String>> partition,
                              Map<String,List<String>> removed,
                              Map<String,List<String>> added)

Description copied from interface: PartitionTriggerListener

Invoked when the topology has changed in the partition. It updates the local partition after re-calculate triggers distribution across the partition. A local partition has the following structure: Map>: { "tenant1": ["trigger1","trigger2","trigger3"], "tenant2": ["trigger4","trigger5","trigger6"] }

Specified by:

onPartitionChange in interface PartitionTriggerListener

Parameters:

partition - a Map with the local partition of triggers hold by this node after calculation

removed - a Map with the triggers removed from an old partition after calculation

added - a Map with the triggers added from an old partition after calculation