/**
* @param ldr Loader.
* @param nodeId Sender node ID.
* @param req Request.
* @return Remote transaction.
* @throws GridException If failed.
*/
@Nullable
public GridNearTxRemote<K, V> startRemoteTx(
ClassLoader ldr, UUID nodeId, GridDhtTxPrepareRequest<K, V> req) throws GridException {
if (!F.isEmpty(req.nearWrites())) {
GridNearTxRemote<K, V> tx =
new GridNearTxRemote<K, V>(
ldr,
nodeId,
req.nearNodeId(),
req.threadId(),
req.version(),
req.commitVersion(),
req.concurrency(),
req.isolation(),
req.isInvalidate(),
req.timeout(),
req.nearWrites(),
ctx);
if (!tx.empty()) {
tx = ctx.tm().onCreated(tx);
if (tx == null || !ctx.tm().onStarted(tx))
throw new GridCacheTxRollbackException("Attempt to start a completed transaction: " + tx);
// Prepare prior to reordering, so the pending locks added
// in prepare phase will get properly ordered as well.
tx.prepare();
// Add remote candidates and reorder completed and uncompleted versions.
tx.addRemoteCandidates(
req.candidatesByKey(), req.committedVersions(), req.rolledbackVersions());
if (req.concurrency() == EVENTUALLY_CONSISTENT) {
if (log.isDebugEnabled())
log.debug("Committing transaction during remote prepare: " + tx);
tx.commit();
if (log.isDebugEnabled()) log.debug("Committed transaction during remote prepare: " + tx);
}
}
return tx;
}
return null;
}
