Enum Class JGroupsRaftHealthCheck.ClusterHealth

java.lang.Object

java.lang.Enum<JGroupsRaftHealthCheck.ClusterHealth>

org.jgroups.raft.JGroupsRaftHealthCheck.ClusterHealth

All Implemented Interfaces:

Serializable, Comparable<JGroupsRaftHealthCheck.ClusterHealth>, Constable

Enclosing interface:

JGroupsRaftHealthCheck

public static enum JGroupsRaftHealthCheck.ClusterHealth
extends Enum<JGroupsRaftHealthCheck.ClusterHealth>

Coarse-grained cluster health status from a single node's perspective.

The status is derived from local knowledge of the JGroups view and Raft leader state. Only voting members count towards the health assessment -- learners are excluded.

Since:

2.0

Author:

José Bolina

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DEGRADED	A leader exists and a majority of voting members are active, but some are missing.
FAILURE	No leader is elected, or active voting members are below the majority threshold.
HEALTHY	A leader exists and all configured voting members are active.
NOT_RUNNING	The channel is disconnected or the node has not started.

Method Summary

Modifier and Type	Method	Description
static JGroupsRaftHealthCheck.ClusterHealth	valueOf(String name)	Returns the enum constant of this class with the specified name.
static JGroupsRaftHealthCheck.ClusterHealth[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NOT_RUNNING

public static final JGroupsRaftHealthCheck.ClusterHealth NOT_RUNNING

The channel is disconnected or the node has not started.

HEALTHY

public static final JGroupsRaftHealthCheck.ClusterHealth HEALTHY

A leader exists and all configured voting members are active.

DEGRADED

public static final JGroupsRaftHealthCheck.ClusterHealth DEGRADED

A leader exists and a majority of voting members are active, but some are missing.

FAILURE

public static final JGroupsRaftHealthCheck.ClusterHealth FAILURE

No leader is elected, or active voting members are below the majority threshold.

Method Details

values

public static JGroupsRaftHealthCheck.ClusterHealth[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static JGroupsRaftHealthCheck.ClusterHealth valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null