org.apache.brooklyn.policy.ha

Class ServiceFailureDetector

java.lang.Object

org.apache.brooklyn.core.objs.AbstractBrooklynObject

org.apache.brooklyn.core.objs.AbstractEntityAdjunct

org.apache.brooklyn.core.enricher.AbstractEnricher

org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.ComputeServiceState

org.apache.brooklyn.policy.ha.ServiceFailureDetector

All Implemented Interfaces:

Rebindable, BrooklynObject, Configurable, EntityAdjunct, Identifiable, Enricher, SensorEventListener<java.lang.Object>, BrooklynObjectInternal

public class ServiceFailureDetector
extends ServiceStateLogic.ComputeServiceState

Emits HASensors.ENTITY_FAILED whenever the parent's default logic (ServiceStateLogic.ComputeServiceState) would detect a problem, and similarly HASensors.ENTITY_RECOVERED when recovered.

gives more control over suppressing Lifecycle.ON_FIRE, for some period of time (or until another process manually sets Attributes.SERVICE_STATE_ACTUAL to , which this enricher will not clear until all problems have gone away)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ServiceFailureDetector.LastPublished

Nested classes/interfaces inherited from class org.apache.brooklyn.core.objs.AbstractEntityAdjunct

AbstractEntityAdjunct.AdjunctTagSupport, AbstractEntityAdjunct.BasicSubscriptionSupport

Nested classes/interfaces inherited from interface org.apache.brooklyn.api.objs.BrooklynObject

BrooklynObject.RelationSupport<T extends BrooklynObject>, BrooklynObject.SubscriptionSupport, BrooklynObject.TagSupport

Nested classes/interfaces inherited from interface org.apache.brooklyn.api.objs.Configurable

Configurable.ConfigurationSupport

Nested classes/interfaces inherited from interface org.apache.brooklyn.core.objs.BrooklynObjectInternal

BrooklynObjectInternal.ConfigurationSupportInternal, BrooklynObjectInternal.RelationSupportInternal<T extends BrooklynObject>, BrooklynObjectInternal.SubscriptionSupportInternal

Field Summary

Fields

Modifier and Type	Field and Description
static BasicNotificationSensor<HASensors.FailureDescriptor>	ENTITY_FAILED
static ConfigKey<java.lang.Boolean>	ENTITY_FAILED_ONLY_IF_PREVIOUSLY_UP
static ConfigKey<Duration>	ENTITY_FAILED_REPUBLISH_TIME
static ConfigKey<Duration>	ENTITY_FAILED_STABILIZATION_DELAY
static ConfigKey<Duration>	ENTITY_RECOVERED_STABILIZATION_DELAY
static ConfigKey<ServiceFailureDetector.LastPublished>	LAST_PUBLISHED Indicates the last event that was published (so we don't accidentally publish repeated ENTITY_FAILED, etc).
static ConfigKey<java.lang.Boolean>	MONITOR_SERVICE_PROBLEMS
static ConfigKey<Duration>	SERVICE_ON_FIRE_STABILIZATION_DELAY

Fields inherited from class org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.ComputeServiceState

DEFAULT_ENRICHER_UNIQUE_TAG

Fields inherited from class org.apache.brooklyn.core.enricher.AbstractEnricher

SUPPRESS_DUPLICATES

Fields inherited from class org.apache.brooklyn.core.objs.AbstractEntityAdjunct

HIGHLIGHT_NAME_LAST_ACTION, HIGHLIGHT_NAME_LAST_CONFIRMATION, HIGHLIGHT_NAME_LAST_VIOLATION, HIGHLIGHT_NAME_TRIGGERS

Fields inherited from interface org.apache.brooklyn.api.sensor.SensorEventListener

NOOP

Constructor Summary

Constructors

Constructor and Description
ServiceFailureDetector()

Method Summary

Modifier and Type	Method and Description
void	onEvent(SensorEvent<java.lang.Object> event) The SensorEvent handler method.

Methods inherited from class org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.ComputeServiceState

init, setEntity

Methods inherited from class org.apache.brooklyn.core.enricher.AbstractEnricher

getEnricherType, getRebindSupport, relations

Methods inherited from class org.apache.brooklyn.core.objs.AbstractEntityAdjunct

config, configure, destroy, getAdjunctType, getConfig, getDisplayName, getEntity, getExecutionContext, getHighlights, getManagementContext, getUniqueTag, isDestroyed, isRunning, setDisplayName, setHighlights, subscriptions, tags, toString

Methods inherited from class org.apache.brooklyn.core.objs.AbstractBrooklynObject

addSearchPath, getCatalogItemId, getCatalogItemIdSearchPath, getId, rebind, setCatalogItemId, setCatalogItemIdAndSearchPath, setManagementContext, stackCatalogItemId

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.brooklyn.api.sensor.Enricher

getId

Methods inherited from interface org.apache.brooklyn.api.objs.EntityAdjunct

getHighlights, getUniqueTag, isDestroyed, isRunning

Methods inherited from interface org.apache.brooklyn.api.objs.BrooklynObject

getCatalogItemId, getCatalogItemIdSearchPath, getDisplayName, subscriptions, tags

Methods inherited from interface org.apache.brooklyn.api.objs.Configurable

config, getConfig

Methods inherited from interface org.apache.brooklyn.core.objs.BrooklynObjectInternal

addSearchPath, setCatalogItemId, setCatalogItemIdAndSearchPath, stackCatalogItemId

Field Detail

ENTITY_FAILED

public static final BasicNotificationSensor<HASensors.FailureDescriptor> ENTITY_FAILED

ENTITY_FAILED_ONLY_IF_PREVIOUSLY_UP

public static final ConfigKey<java.lang.Boolean> ENTITY_FAILED_ONLY_IF_PREVIOUSLY_UP

MONITOR_SERVICE_PROBLEMS

public static final ConfigKey<java.lang.Boolean> MONITOR_SERVICE_PROBLEMS

SERVICE_ON_FIRE_STABILIZATION_DELAY

public static final ConfigKey<Duration> SERVICE_ON_FIRE_STABILIZATION_DELAY

ENTITY_FAILED_STABILIZATION_DELAY

public static final ConfigKey<Duration> ENTITY_FAILED_STABILIZATION_DELAY

ENTITY_RECOVERED_STABILIZATION_DELAY

public static final ConfigKey<Duration> ENTITY_RECOVERED_STABILIZATION_DELAY

ENTITY_FAILED_REPUBLISH_TIME

public static final ConfigKey<Duration> ENTITY_FAILED_REPUBLISH_TIME

LAST_PUBLISHED

public static final ConfigKey<ServiceFailureDetector.LastPublished> LAST_PUBLISHED

Indicates the last event that was published (so we don't accidentally publish repeated ENTITY_FAILED, etc). Needs to be persisted so that on rebind we don't publish a duplicate (we'll only publish again if we are in a different state from before Brooklyn was last shutdown).

Constructor Detail

ServiceFailureDetector

public ServiceFailureDetector()

Method Detail

onEvent

public void onEvent(SensorEvent<java.lang.Object> event)

Description copied from interface: SensorEventListener

The SensorEvent handler method.

Specified by:

onEvent in interface SensorEventListener<java.lang.Object>

Overrides:

onEvent in class ServiceStateLogic.ComputeServiceState