/**
* This method invoked rollback on the Resource that is passed as a parameter.
*
* <p>This procedure may be called as the main procedure of a new thread, which must be done for
* remote Resource objects during resync to avoid the possibility of deadlock during resync.
*
* <p>It is called directly when the Resource is not a proxy.
*
* @param res The Resource to be rolled back.
* @return
* @see
*/
void rollbackOrphan(Resource res) {
try {
res.rollback();
} catch (Throwable exc) {
// If the rollback raised a heuristic exception, it can
// only be reported in a message as it will never reach
// the Coordinator.
if (exc instanceof HeuristicCommit
|| exc instanceof HeuristicMixed
|| exc instanceof HeuristicHazard) {
_logger.log(Level.WARNING, "jts.heuristic_exception", exc.toString());
} else {
}
}
// We must release the proxy now.
res._release();
}
// same as replay_completion(res) : added for delegated recovery support
public Status replay_completion(Resource res, String logPath) throws NotPrepared {
if (_logger.isLoggable(Level.FINE)) {
_logger.logp(
Level.FINE,
"RecoveryCoordinatorImpl",
"replay_completion()",
"replay_completion on Resource:" + res);
}
Status result = Status.StatusRolledBack;
CoordinatorImpl coord = DelegatedRecoveryManager.getCoordinator(globalTID, logPath);
if (coord != null) {
try {
result = coord.get_status();
} catch (SystemException exc) {
}
}
switch (result.value()) {
/*
* If the transaction is still active, raise the NotPrepared
* exception. The Coordinator must be marked rollback-only at
* this point because we cannot allow the transaction to
* complete if a participant has failed.
*/
case Status._StatusActive:
case Status._StatusMarkedRollback:
try {
coord.rollback_only();
} catch (Throwable exc) {
}
throw new NotPrepared();
/*
* If the transaction is prepared, the caller must wait for the
* Coordinator to tell it what to do, so return an unknown status, and
* do nothing. Note that if this Coordinator is sitting waiting for
* its superior, this could take a int time.
*/
case Status._StatusPrepared:
result = Status.StatusUnknown;
break;
/*
* If the transaction has been committed, the caller will receive
* a commit.
*
* GDH If the transaction is commiting then we pass this on
* to the caller. This state (added in OTS 1.1 means that
* TopCoordinator.recover must now accept the COMMITTING state.
*/
case Status._StatusCommitting:
// MODIFICATION (Ram Jeyaraman) commented out the code below,
// since a StatusCommitting will be upgraded to Committed in
// the subordinate.
/*
// (Ram Jeyaraman) let the subordinate wait, and allow the root
// finish driving the commit.
result = Status.StatusUnknown;
*/
break;
case Status._StatusCommitted:
break;
case Status._StatusRolledBack:
// If the transaction has been rolled back, and there is
// no Coordinator for the transaction, we must invoke rollback
// directly, as it will not be done otherwise. However for
// proxies, this rollback cannot be done from this thread as
// it would cause deadlock in the server requesting resync.
if (coord == null) {
if (!Configuration.getProxyChecker().isProxy(res)) {
rollbackOrphan(res);
} else {
// We must pass a duplicate of the proxy to the
// rollback thread because this proxy will be destroyed
// when the replay_completion request returns
// to the remote server.
try {
OrphanRollbackThread rollbackThread =
new OrphanRollbackThread(this, (Resource) res._duplicate());
rollbackThread.start();
} catch (SystemException exc) {
}
}
}
break;
/*
* In any other situation, assume that the transaction has been rolled
* back. As there is a Coordinator, it will direct the Resource to roll
* back.
*/
default:
result = Status.StatusRolledBack;
}
return result;
}