com.hazelcast.cp.internal.raft.impl

Enum RaftNodeStatus

java.lang.Object

java.lang.Enum<RaftNodeStatus>

com.hazelcast.cp.internal.raft.impl.RaftNodeStatus

All Implemented Interfaces:

Serializable, Comparable<RaftNodeStatus>

public enum RaftNodeStatus
extends Enum<RaftNodeStatus>

Represents status of a RaftNode during its lifecycle.

Initially, a Raft node starts as ACTIVE.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ACTIVE Initial state of a node.
STEPPED_DOWN When a node is removed from the cluster after a membership change is committed, its status becomes STEPPED_DOWN.
TERMINATED When a Raft group is terminated completely, all nodes' statuses in that group become TERMINATED.
TERMINATING When a Raft group is being terminated, all nodes' statuses in that group become TERMINATING.
UPDATING_GROUP_MEMBER_LIST During membership changes, node statuses become UPDATING_GROUP_MEMBER_LIST and they apply requested change once the entry is appended to the log.

Method Summary

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

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ACTIVE

public static final RaftNodeStatus ACTIVE

Initial state of a node. When ACTIVE node operates normally.

UPDATING_GROUP_MEMBER_LIST

public static final RaftNodeStatus UPDATING_GROUP_MEMBER_LIST

During membership changes, node statuses become UPDATING_GROUP_MEMBER_LIST and they apply requested change once the entry is appended to the log. Once log is committed, if the related node is the being removed from group, status becomes STEPPED_DOWN, otherwise ACTIVE.

STEPPED_DOWN

public static final RaftNodeStatus STEPPED_DOWN

When a node is removed from the cluster after a membership change is committed, its status becomes STEPPED_DOWN.

TERMINATING

public static final RaftNodeStatus TERMINATING

When a Raft group is being terminated, all nodes' statuses in that group become TERMINATING. Once termination process is completed, then statuses become TERMINATED.

TERMINATED

public static final RaftNodeStatus TERMINATED

When a Raft group is terminated completely, all nodes' statuses in that group become TERMINATED.

Method Detail

values

public static RaftNodeStatus[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (RaftNodeStatus c : RaftNodeStatus.values())
    System.out.println(c);

Returns:

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

valueOf

public static RaftNodeStatus valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null