/** {@inheritDoc} */
@Override
public boolean tmLock(GridCacheTxEx<K, V> tx, long timeout)
throws GridCacheEntryRemovedException, GridDistributedLockCancelledException {
if (tx.local()) {
GridDhtTxLocal<K, V> dhtTx = (GridDhtTxLocal<K, V>) tx;
// Null is returned if timeout is negative and there is other lock owner.
return addDhtLocal(
dhtTx.nearNodeId(),
dhtTx.nearXidVersion(),
tx.threadId(),
tx.xidVersion(),
timeout,
false,
tx.ec(),
true)
!= null;
}
try {
addRemote(
tx.nodeId(),
tx.otherNodeId(),
tx.threadId(),
tx.xidVersion(),
tx.timeout(),
tx.ec(),
true);
return true;
} catch (GridDistributedLockCancelledException ignored) {
if (log.isDebugEnabled())
log.debug("Attempted to enter tx lock for cancelled ID (will ignore): " + tx);
return false;
}
}
/** Initializes future. */
public void prepare() {
if (log.isDebugEnabled())
log.debug("Checking if transaction was committed on remote nodes: " + tx);
// Check local node first (local node can be a backup node for some part of this transaction).
long originatingThreadId = tx.threadId();
if (tx instanceof GridCacheTxRemoteEx)
originatingThreadId = ((GridCacheTxRemoteEx) tx).remoteThreadId();
GridCacheCommittedTxInfo<K, V> txInfo =
cctx.tm().txCommitted(tx.nearXidVersion(), tx.eventNodeId(), originatingThreadId);
if (txInfo != null) {
onDone(txInfo);
markInitialized();
return;
}
Collection<GridNode> checkNodes = CU.remoteNodes(cctx, tx.topologyVersion());
if (tx instanceof GridDhtTxRemote) {
// If we got primary node failure and near node has not failed.
if (tx.nodeId().equals(failedNodeId) && !tx.eventNodeId().equals(failedNodeId)) {
nearCheck = true;
GridNode nearNode = cctx.discovery().node(tx.eventNodeId());
if (nearNode == null) {
// Near node failed, separate check prepared future will take care of it.
onDone(
new GridTopologyException(
"Failed to check near transaction state (near node left grid): "
+ tx.eventNodeId()));
return;
}
checkNodes = Collections.singletonList(nearNode);
}
}
for (GridNode rmtNode : checkNodes) {
// Skip left nodes and local node.
if (rmtNode.id().equals(failedNodeId)) continue;
/*
* Send message to all cache nodes in the topology.
*/
MiniFuture fut = new MiniFuture(rmtNode.id());
GridCachePessimisticCheckCommittedTxRequest<K, V> req =
new GridCachePessimisticCheckCommittedTxRequest<>(
tx, originatingThreadId, futureId(), fut.futureId());
add(fut);
try {
cctx.io().send(rmtNode.id(), req);
} catch (GridTopologyException ignored) {
fut.onNodeLeft();
} catch (GridException e) {
fut.onError(e);
break;
}
}
markInitialized();
}
