Package org.opendaylight.controller.cluster

Interface DataPersistenceProvider

All Known Implementing Classes:

DelegatingPersistentDataProvider, NonPersistentDataProvider, PersistentDataProvider

public interface DataPersistenceProvider

DataPersistenceProvider provides methods to persist data and is an abstraction of the akka-persistence persistence API.

Method Summary

Modifier and Type	Method	Description
void	deleteMessages(long sequenceNumber)	Deletes journal entries up to the given sequence number.
void	deleteSnapshots(SnapshotSelectionCriteria criteria)	Deletes snapshots based on the given criteria.
long	getLastSequenceNumber()	Returns the last sequence number contained in the journal.
boolean	isRecoveryApplicable()	Returns whether or not persistence recovery is applicable/enabled.
<T> void	persist(T entry, Procedure<T> procedure)	Persists an entry to the applicable journal synchronously.
<T> void	persistAsync(T entry, Procedure<T> procedure)	Persists an entry to the applicable journal asynchronously.
void	saveSnapshot(Object snapshot)	Saves a snapshot.

Method Detail

isRecoveryApplicable

boolean isRecoveryApplicable()

Returns whether or not persistence recovery is applicable/enabled.

Returns:

true if recovery is applicable, otherwise false, in which case the provider is not persistent and may not have anything to be recovered

persist

<T> void persist(T entry,
                 Procedure<T> procedure)

Persists an entry to the applicable journal synchronously.

Type Parameters:

T - the type of the journal entry

Parameters:

entry - the journal entry to persist

procedure - the callback when persistence is complete

persistAsync

<T> void persistAsync(T entry,
                      Procedure<T> procedure)

Persists an entry to the applicable journal asynchronously.

Type Parameters:

T - the type of the journal entry

Parameters:

entry - the journal entry to persist

procedure - the callback when persistence is complete

saveSnapshot

void saveSnapshot(Object snapshot)

Saves a snapshot.

Parameters:

snapshot - the snapshot object to save

deleteSnapshots

void deleteSnapshots(SnapshotSelectionCriteria criteria)

Deletes snapshots based on the given criteria.

Parameters:

criteria - the search criteria

deleteMessages

void deleteMessages(long sequenceNumber)

Deletes journal entries up to the given sequence number.

Parameters:

sequenceNumber - the sequence number

getLastSequenceNumber

long getLastSequenceNumber()

Returns the last sequence number contained in the journal.

Returns:

the last sequence number