com.bigdata.quorum

Interface QuorumEvent

All Known Implementing Classes:

AbstractQuorum.E

public interface QuorumEvent

An interface for informational quorum events. These events are intended for clients interested in quorum state changes. Services that are HA aware use a more intimate API to handle the state changes.

Version:

$Id$

Author:

Bryan Thompson

See Also:

QuorumListener

Method Summary

Methods

Modifier and Type	Method and Description
QuorumEventEnum	getEventType() The type of event and never null.
UUID	getServiceId() The service identifier associated with the event, if any.
long	lastCommitTime() The lastCommitTime for which a vote was cast.
long	lastValidToken() The lastValid token at the time of the event.
long	token() The current quorum token at the time the event was generated.

Method Detail

getEventType

QuorumEventEnum getEventType()

The type of event and never null.

lastValidToken

long lastValidToken()

The lastValid token at the time of the event.

token

long token()

The current quorum token at the time the event was generated.

getServiceId

UUID getServiceId()

The service identifier associated with the event, if any. For example, when a service joins or leaves the quorum, this will be the UUID of that service.

lastCommitTime

long lastCommitTime()

The lastCommitTime for which a vote was cast.

Returns:

The lastCommitTime for which the vote was cast.

Throws:

UnsupportedOperationException - unless getEventType() returns QuorumEventEnum.CAST_VOTE