org.glassfish.gms.bootstrap

Class HealthHistory

java.lang.Object

org.glassfish.gms.bootstrap.HealthHistory

All Implemented Interfaces:

org.jvnet.hk2.config.ConfigListener

public final class HealthHistory
extends Object
implements org.jvnet.hk2.config.ConfigListener

Used to hold cluster history. This information is backed by a ConcurrentMap, so iterating over the instances is "weakly consistent" as the state could change at any time (especially during cluster startup).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HealthHistory.InstanceHealth
static class	HealthHistory.STATE

Field Summary

Fields

Modifier and Type	Field and Description
static long	NOTIME Used when no time information is known, for instance at cluster startup before an instance has started.

Constructor Summary

Constructors

Constructor and Description
HealthHistory(Cluster cluster)

Method Summary

Modifier and Type	Method and Description
org.jvnet.hk2.config.UnprocessedChangeEvents	changed(PropertyChangeEvent[] events)
HealthHistory.InstanceHealth	getHealthByInstance(String name) Returns the state/time of a specific instance.
Set<String>	getInstances() Returns a copy of the instance names.
List<String>	getInstancesByState(HealthHistory.STATE targetState) The returned list may be modified without affecting the information in the HealthHistory object.
void	updateHealth(com.sun.enterprise.ee.cms.core.Signal signal) Called by GMS subsystem to update the health of an instance.

Methods inherited from class java.lang.Object

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

Field Detail

NOTIME

public static final long NOTIME

Used when no time information is known, for instance at cluster startup before an instance has started.

See Also:

Constant Field Values

Constructor Detail

HealthHistory

public HealthHistory(Cluster cluster)

Method Detail

getHealthByInstance

public HealthHistory.InstanceHealth getHealthByInstance(String name)

Returns the state/time of a specific instance.

getInstancesByState

public List<String> getInstancesByState(HealthHistory.STATE targetState)

The returned list may be modified without affecting the information in the HealthHistory object.

getInstances

public Set<String> getInstances()

Returns a copy of the instance names.

updateHealth

public void updateHealth(com.sun.enterprise.ee.cms.core.Signal signal)

Called by GMS subsystem to update the health of an instance. TODO: add try/catch around everything for safety

changed

public org.jvnet.hk2.config.UnprocessedChangeEvents changed(PropertyChangeEvent[] events)

Specified by:

changed in interface org.jvnet.hk2.config.ConfigListener