Package io.camunda.zeebe.dynamic.config.changes

Class MemberLeaveApplier

java.lang.Object

io.camunda.zeebe.dynamic.config.changes.MemberLeaveApplier

All Implemented Interfaces:

ConfigurationChangeAppliers.ClusterOperationApplier, ConfigurationChangeAppliers.MemberOperationApplier

public class MemberLeaveApplier
extends Object
implements ConfigurationChangeAppliers.MemberOperationApplier

Constructor Summary

Constructors

Constructor	Description
MemberLeaveApplier(MemberId memberId, ClusterMembershipChangeExecutor clusterMembershipChangeExecutor)

Method Summary

Modifier and Type	Method	Description
ActorFuture<UnaryOperator<MemberState>>	applyOperation()	Applies the operation.
Either<Exception,UnaryOperator<MemberState>>	initMemberState(ClusterConfiguration currentClusterConfiguration)	This method will be called before invoking ConfigurationChangeAppliers.MemberOperationApplier.applyOperation().
MemberId	memberId()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.camunda.zeebe.dynamic.config.changes.ConfigurationChangeAppliers.MemberOperationApplier

apply, init

Constructor Details

MemberLeaveApplier

public MemberLeaveApplier(MemberId memberId,
 ClusterMembershipChangeExecutor clusterMembershipChangeExecutor)

Method Details

memberId

public MemberId memberId()

Specified by:

memberId in interface ConfigurationChangeAppliers.MemberOperationApplier

initMemberState

public Either<Exception,UnaryOperator<MemberState>> initMemberState(ClusterConfiguration currentClusterConfiguration)

Description copied from interface: ConfigurationChangeAppliers.MemberOperationApplier

This method will be called before invoking ConfigurationChangeAppliers.MemberOperationApplier.applyOperation(). This method can be used to validate the operation and to update the ClusterConfiguration to mark the start of the operation. For example, an operation for joining a partition can mark the state as JOINING.

Specified by:

initMemberState in interface ConfigurationChangeAppliers.MemberOperationApplier

Returns:

an either which contains an exception if the operation is not valid, or a function to update the cluster configuration

applyOperation

public ActorFuture<UnaryOperator<MemberState>> applyOperation()

Description copied from interface: ConfigurationChangeAppliers.MemberOperationApplier

Applies the operation. This can be run asynchronously and should complete the future when the operation is completed. The future should be completed with a function that can update the ClusterTopology to mark the operation as completed. For example, an operation for joining a partition should mark the state of the partition as ACTIVE.

It is expected that no other operation is applied until this operation is completed. It is guaranteed that the MemberState updated by ConfigurationChangeAppliers.MemberOperationApplier.initMemberState(ClusterConfiguration) remains the same until this operation is completed.

Specified by:

applyOperation in interface ConfigurationChangeAppliers.MemberOperationApplier

Returns:

the future which is completed when the operation is completed successfully or failed.