edu.umass.cs.reconfiguration.interfaces

Interface ReplicaCoordinator<NodeIDType>

Type Parameters:

NodeIDType -

All Known Implementing Classes:

AbstractReplicaCoordinator, AbstractReplicaCoordinatorPersistent, AbstractTransactor, DistTransactor, DynamoReplicaCoordinator, NoopAppCoordinator, PaxosReplicaCoordinator, RepliconfigurableReconfiguratorDB

public interface ReplicaCoordinator<NodeIDType>

Author:

arun

Method Summary

Modifier and Type	Method and Description
boolean	coordinateRequest(Request request, ExecutedCallback callback) This method performs whatever replica coordination action is necessary to handle the request.
boolean	createReplicaGroup(java.lang.String serviceName, int epoch, java.lang.String state, java.util.Set<NodeIDType> nodes) This method should return true if the replica group is successfully created or one already exists with the same set of nodes.
boolean	deleteReplicaGroup(java.lang.String serviceName, int epoch) This method should result in all state corresponding to serviceName being deleted
java.util.Set<NodeIDType>	getReplicaGroup(java.lang.String serviceName) This method must return the replica group that was most recently successfully created for the serviceName using createReplicaGroup.

Method Detail

coordinateRequest

boolean coordinateRequest(Request request,
                          ExecutedCallback callback)
                   throws java.io.IOException,
                          RequestParseException

This method performs whatever replica coordination action is necessary to handle the request.

Parameters:

request -

callback -

Returns:

False if coordinated, else the result of local Application.execute(edu.umass.cs.gigapaxos.interfaces.Request) invocation.

Throws:

java.io.IOException

RequestParseException

createReplicaGroup

boolean createReplicaGroup(java.lang.String serviceName,
                           int epoch,
                           java.lang.String state,
                           java.util.Set<NodeIDType> nodes)

This method should return true if the replica group is successfully created or one already exists with the same set of nodes. It should return false otherwise.

Parameters:

serviceName -

epoch -

state -

nodes -

Returns:

True if created successfully.

deleteReplicaGroup

boolean deleteReplicaGroup(java.lang.String serviceName,
                           int epoch)

This method should result in all state corresponding to serviceName being deleted

Parameters:

serviceName -

epoch -

Returns:

True if deleted without errors.

getReplicaGroup

java.util.Set<NodeIDType> getReplicaGroup(java.lang.String serviceName)

This method must return the replica group that was most recently successfully created for the serviceName using createReplicaGroup.

Parameters:

serviceName -

Returns:

Set of nodes in the replica group for serviceName.