org.onosproject.store.primitives.impl

Class TransactionCoordinator

java.lang.Object

org.onosproject.store.primitives.impl.TransactionCoordinator

public class TransactionCoordinator
extends Object

Transaction coordinator.

Field Summary

Fields

Modifier and Type	Field and Description
protected TransactionId	transactionId
protected TransactionManager	transactionManager
protected Set<TransactionParticipant>	transactionParticipants

Constructor Summary

Constructors

Constructor and Description
TransactionCoordinator(TransactionId transactionId, TransactionManager transactionManager)

Method Summary

Modifier and Type	Method and Description
CompletableFuture<CommitStatus>	commit() Commits the transaction.
protected CompletableFuture<Void>	commit(Set<TransactionParticipant> transactionParticipants) Performs the commit phase of the two-phase commit protocol for the given transaction participants.
<K,V> TransactionalMap<K,V>	getTransactionalMap(String name, Serializer serializer) Returns a transactional map for this transaction.
protected CompletableFuture<Boolean>	prepare(Set<TransactionParticipant> transactionParticipants) Performs the prepare phase of the two-phase commit protocol for the given transaction participants.
protected CompletableFuture<Void>	rollback(Set<TransactionParticipant> transactionParticipants) Rolls back transactions for the given participants.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

transactionId

protected final TransactionId transactionId

transactionManager

protected final TransactionManager transactionManager

transactionParticipants

protected final Set<TransactionParticipant> transactionParticipants

Constructor Detail

TransactionCoordinator

public TransactionCoordinator(TransactionId transactionId,
                              TransactionManager transactionManager)

Method Detail

getTransactionalMap

public <K,V> TransactionalMap<K,V> getTransactionalMap(String name,
                                                       Serializer serializer)

Returns a transactional map for this transaction.

Type Parameters:

K - key type

V - value type

Parameters:

name - the transactional map name

serializer - the serializer

Returns:

a transactional map for this transaction

commit

public CompletableFuture<CommitStatus> commit()

Commits the transaction.

Returns:

the transaction commit status

prepare

protected CompletableFuture<Boolean> prepare(Set<TransactionParticipant> transactionParticipants)

Performs the prepare phase of the two-phase commit protocol for the given transaction participants.

Parameters:

transactionParticipants - the transaction participants for which to prepare the transaction

Returns:

a completable future indicating whether all prepares succeeded

commit

protected CompletableFuture<Void> commit(Set<TransactionParticipant> transactionParticipants)

Performs the commit phase of the two-phase commit protocol for the given transaction participants.

Parameters:

transactionParticipants - the transaction participants for which to commit the transaction

Returns:

a completable future to be completed once the commits are complete

rollback

protected CompletableFuture<Void> rollback(Set<TransactionParticipant> transactionParticipants)

Rolls back transactions for the given participants.

Parameters:

transactionParticipants - the transaction participants for which to roll back the transaction

Returns:

a completable future to be completed once the rollbacks are complete

toString

public String toString()

Overrides:

toString in class Object