/** @inheritDoc */
@SuppressWarnings("unchecked")
@Override
public void voteReceived(Vote vote) {
if (vote.getVotePiggyBack().getPiggyback() == null) {
/*
* init transaction.
*/
return;
}
try {
PartitionDependenceVector<String> commitVC =
(PartitionDependenceVector<String>) vote.getVotePiggyBack().getPiggyback();
/*
* Corresponds to line 19
*/
PartitionDependenceVector<String> receivedVector =
receivedVectors.putIfAbsent(vote.getTransactionHandler().getId(), commitVC);
if (receivedVector != null) {
receivedVector.update(commitVC);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void postCommit(ExecutionHistory executionHistory) {
if (executionHistory.getTransactionType() != TransactionType.INIT_TRANSACTION) {
PartitionDependenceVector<String> commitVC =
receivedVectors.get(executionHistory.getTransactionHandler().getId());
PartitionDependenceVector.lastCommit = commitVC.clone();
}
/*
* Garbage collect the received vectors. We don't need them anymore.
*/
if (receivedVectors.containsKey(executionHistory.getTransactionHandler().getId()))
receivedVectors.remove(executionHistory.getTransactionHandler().getId());
}
@Override
public void prepareToCommit(TerminateTransactionRequestMessage msg) {
ExecutionHistory executionHistory = msg.getExecutionHistory();
PartitionDependenceVector<String> commitVC =
receivedVectors.get(executionHistory.getTransactionHandler().getId());
/*
* Assigning commitVC to the entities
*/
for (JessyEntity entity : executionHistory.getWriteSet().getEntities()) {
entity.setLocalVector(commitVC.clone());
entity.temporaryObject = null;
entity.getLocalVector().setSelfKey(manager.getMyGroup().name());
}
}
@Override
public boolean transactionDeliveredForTermination(
ConcurrentLinkedHashMap<UUID, Object> terminatedTransactions,
ConcurrentHashMap<TransactionHandler, VotingQuorum> quorumes,
TerminateTransactionRequestMessage msg) {
try {
if (msg.getExecutionHistory().getTransactionType() != TransactionType.INIT_TRANSACTION) {
int seqNo = PartitionDependenceVector.lastCommitSeqNo.incrementAndGet();
PartitionDependenceVector<String> vector = new PartitionDependenceVector<String>();
for (JessyEntity entity : msg.getExecutionHistory().getReadSet().getEntities()) {
vector.update(entity.getLocalVector());
}
vector.update(PartitionDependenceVector.lastCommit);
vector.setSelfKey(manager.getMyGroup().name());
vector.setValue(vector.getSelfKey(), seqNo);
msg.setComputedObjectUponDelivery(vector);
}
} catch (Exception ex) {
ex.printStackTrace();
}
return true;
}