io.aeron.cluster.service

Class CommitPos

java.lang.Object

io.aeron.cluster.service.CommitPos

public class CommitPos
extends Object

Counter representing the commit position that can consumed by a state machine on a stream, it is the consensus position reached by the cluster.

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMMIT_POSITION_TYPE_ID Type id of a commit position counter.
static String	NAME Human readable name for the counter.

Constructor Summary

Constructors

Constructor and Description
CommitPos()

Method Summary

Modifier and Type	Method and Description
static Counter	allocate(Aeron aeron) Allocate a counter to represent the commit position on stream for the current leadership term.
static int	findCounterId(CountersReader counters) Find the active counter id for a cluster commit position

Methods inherited from class java.lang.Object

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

Field Detail

COMMIT_POSITION_TYPE_ID

public static final int COMMIT_POSITION_TYPE_ID

Type id of a commit position counter.

See Also:

Constant Field Values

NAME

public static final String NAME

Human readable name for the counter.

See Also:

Constant Field Values

Constructor Detail

CommitPos

public CommitPos()

Method Detail

allocate

public static Counter allocate(Aeron aeron)

Allocate a counter to represent the commit position on stream for the current leadership term.

Parameters:

aeron - to allocate the counter.

Returns:

the Counter for the commit position.

findCounterId

public static int findCounterId(CountersReader counters)

Find the active counter id for a cluster commit position

Parameters:

counters - to search within.

Returns:

the counter id if found otherwise CountersReader.NULL_COUNTER_ID.