@Override
public Object visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)
throws Throwable {
if (ctx.isOriginLocal()
&& !isMaster()
&& (ctx.hasModifications() || command.hasModifications())) {
throw new IllegalStateException(
"Write transaction not allowed in Passive Replication, in backup node");
}
return invokeNextInterceptor(ctx, command);
}
@Override
public Object visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)
throws Throwable {
boolean isTransactional = isTransactional();
if (isTransactional) {
// Sanity check -- if the remote tx doesn't have modifications, it never should have been
// propagated!
if (!command.hasModifications()) {
throw new IllegalStateException("TxInvocationContext has no modifications!");
}
replayModificationsInTransaction(command, command.isOnePhaseCommit());
} else {
replayModifications(command);
}
return null;
}
@Override
public CompletableFuture<Void> visitPrepareCommand(
TxInvocationContext ctx, PrepareCommand command) throws Throwable {
GlobalTransaction globalTransaction = command.getGlobalTransaction();
if (trace) {
log.tracef(
"Visit Prepare command %s. Is it local?. Transaction is %s",
command, ctx.isOriginLocal(), globalTransaction.globalId());
}
initStatsIfNecessary(ctx);
cacheStatisticManager.onPrepareCommand(globalTransaction, ctx.isOriginLocal());
if (command.hasModifications()) {
cacheStatisticManager.markAsWriteTransaction(globalTransaction, ctx.isOriginLocal());
}
long start = timeService.time();
return ctx.onReturn(
(rCtx, rCommand, rv, throwable) -> {
if (throwable != null) {
processWriteException(rCtx, globalTransaction, throwable);
} else {
long end = timeService.time();
updateTime(
PREPARE_EXECUTION_TIME,
NUM_PREPARE_COMMAND,
start,
end,
globalTransaction,
rCtx.isOriginLocal());
}
if (((PrepareCommand) rCommand).isOnePhaseCommit()) {
boolean local = rCtx.isOriginLocal();
boolean success = throwable == null;
cacheStatisticManager.setTransactionOutcome(
success, globalTransaction, rCtx.isOriginLocal());
cacheStatisticManager.terminateTransaction(globalTransaction, local, !local);
}
return null;
});
}
/**
* total order condition: only commits when it is remote context and the prepare has the flag 1PC
* set
*
* @param command the prepare command
* @param ctx the invocation context
* @return true if the modification should be committed, false otherwise
*/
protected boolean shouldCommitDuringPrepare(PrepareCommand command, TxInvocationContext ctx) {
boolean isTotalOrder = cacheConfiguration.transaction().transactionProtocol().isTotalOrder();
return isTotalOrder
? command.isOnePhaseCommit() && (!ctx.isOriginLocal() || !command.hasModifications())
: command.isOnePhaseCommit();
}
