org.onosproject.store.primitives.impl

Interface TransactionParticipant

All Known Implementing Classes:

DefaultTransactionalMap

public interface TransactionParticipant

Participant in a two-phase commit protocol.

Method Summary

Modifier and Type	Method and Description
CompletableFuture<Void>	commit() Attempts to execute the commit phase for previously prepared transaction.
default boolean	hasPendingUpdates() Returns if this participant has updates that need to be committed.
CompletableFuture<Boolean>	prepare() Executes the prepare phase.
CompletableFuture<Boolean>	prepareAndCommit() Executes the prepare and commit steps in a single go.
CompletableFuture<Void>	rollback() Attempts to execute the rollback phase for previously prepared transaction.
int	totalUpdates() Returns the number of updates that need to committed for this participant.

Method Detail

hasPendingUpdates

default boolean hasPendingUpdates()

Returns if this participant has updates that need to be committed.

Returns:

true if yes; false otherwise

totalUpdates

int totalUpdates()

Returns the number of updates that need to committed for this participant.

Returns:

update count.

prepareAndCommit

CompletableFuture<Boolean> prepareAndCommit()

Executes the prepare and commit steps in a single go.

Returns:

true is successful i.e updates are committed; false otherwise

prepare

CompletableFuture<Boolean> prepare()

Executes the prepare phase.

Returns:

true is successful; false otherwise

commit

CompletableFuture<Void> commit()

Attempts to execute the commit phase for previously prepared transaction.

Returns:

future that is completed when the operation completes

rollback

CompletableFuture<Void> rollback()

Attempts to execute the rollback phase for previously prepared transaction.

Returns:

future that is completed when the operation completes