software.amazon.kinesis.coordinator.migration

Interface MigrationClientVersionState

All Known Implementing Classes:

MigrationClientVersion2xState, MigrationClientVersion3xState, MigrationClientVersion3xWithRollbackState, MigrationClientVersionUpgradeFrom2xState

public interface MigrationClientVersionState

Interface of a state implementation for the MigrationStateMachine

Method Summary

Modifier and Type	Method and Description
ClientVersion	clientVersion() The associated clientVersion this state corresponds to
void	enter(ClientVersion fromClientVersion) Enter the state and perform the business logic of being in this state which includes performing any monitoring that allows the next state transition and also initializing the KCL based on the ClientVersion.
void	leave() Invoked after the transition to another state has occurred to allow printing any helpful logs or performing cleanup.

Method Detail

clientVersion

ClientVersion clientVersion()

The associated clientVersion this state corresponds to

Returns:

ClientVersion that this state implements the logic for.

enter

void enter(ClientVersion fromClientVersion)
    throws DependencyException

Enter the state and perform the business logic of being in this state which includes performing any monitoring that allows the next state transition and also initializing the KCL based on the ClientVersion.

Parameters:

fromClientVersion - from previous state if any specific action must be taken based on the state from which this state is being entered from.

Throws:

DependencyException - if DDB fails in unexpected ways for those states that create the GSI

leave

void leave()

Invoked after the transition to another state has occurred to allow printing any helpful logs or performing cleanup.