/**
* Completeness callback.
*
* @param success {@code True} if lock was acquired.
* @param distribute {@code True} if need to distribute lock removal in case of failure.
* @return {@code True} if complete by this operation.
*/
private boolean onComplete(boolean success, boolean distribute) {
if (log.isDebugEnabled())
log.debug(
"Received onComplete(..) callback [success="
+ success
+ ", distribute="
+ distribute
+ ", fut="
+ this
+ ']');
if (!success) undoLocks(distribute);
if (tx != null) cctx.tm().txContext(tx);
if (super.onDone(success, err.get())) {
if (log.isDebugEnabled()) log.debug("Completing future: " + this);
// Clean up.
cctx.mvcc().removeFuture(this);
if (timeoutObj != null) cctx.time().removeTimeoutObject(timeoutObj);
return true;
}
return false;
}
/** {@inheritDoc} */
@Override
public boolean onDone(@Nullable GridCacheCommittedTxInfo<K, V> res, @Nullable Throwable err) {
if (super.onDone(res, err)) {
cctx.mvcc().removeFuture(this);
if (log.isDebugEnabled())
log.debug(
"Completing check committed tx future for transaction [tx="
+ tx
+ ", res="
+ res
+ ", err="
+ err
+ ']');
if (err == null) cctx.tm().finishPessimisticTxOnRecovery(tx, res);
else {
if (log.isDebugEnabled())
log.debug(
"Failed to check prepared transactions, "
+ "invalidating transaction [err="
+ err
+ ", tx="
+ tx
+ ']');
if (nearCheck) return true;
cctx.tm().salvageTx(tx);
}
return true;
}
return false;
}
/**
* Gets next near lock mapping and either acquires dht locks locally or sends near lock request to
* remote primary node.
*
* @param mappings Queue of mappings.
* @throws GridException If mapping can not be completed.
*/
private void proceedMapping(final ConcurrentLinkedDeque8<GridNearLockMapping<K, V>> mappings)
throws GridException {
GridNearLockMapping<K, V> map = mappings.poll();
// If there are no more mappings to process, complete the future.
if (map == null) return;
final GridNearLockRequest<K, V> req = map.request();
final Collection<K> mappedKeys = map.distributedKeys();
final GridNode node = map.node();
if (filter != null && filter.length != 0) req.filter(filter, cctx);
if (node.isLocal()) {
req.miniId(GridUuid.randomUuid());
if (log.isDebugEnabled()) log.debug("Before locally locking near request: " + req);
GridFuture<GridNearLockResponse<K, V>> fut;
if (CU.DHT_ENABLED) fut = dht().lockAllAsync(cctx.localNode(), req, filter);
else {
// Create dummy values for testing.
GridNearLockResponse<K, V> res =
new GridNearLockResponse<>(lockVer, futId, null, false, 1, null);
res.addValueBytes(null, null, true, lockVer, lockVer, cctx);
fut = new GridFinishedFuture<>(ctx, res);
}
// Add new future.
add(
new GridEmbeddedFuture<>(
cctx.kernalContext(),
fut,
new C2<GridNearLockResponse<K, V>, Exception, Boolean>() {
@Override
public Boolean apply(GridNearLockResponse<K, V> res, Exception e) {
if (CU.isLockTimeoutOrCancelled(e)
|| (res != null && CU.isLockTimeoutOrCancelled(res.error()))) return false;
if (e != null) {
onError(e);
return false;
}
if (res == null) {
onError(new GridException("Lock response is null for future: " + this));
return false;
}
if (res.error() != null) {
onError(res.error());
return false;
}
if (log.isDebugEnabled())
log.debug(
"Acquired lock for local DHT mapping [locId="
+ cctx.nodeId()
+ ", mappedKeys="
+ mappedKeys
+ ", fut="
+ GridNearLockFuture.this
+ ']');
try {
int i = 0;
for (K k : mappedKeys) {
while (true) {
GridNearCacheEntry<K, V> entry =
cctx.near().entryExx(k, req.topologyVersion());
try {
GridTuple3<GridCacheVersion, V, byte[]> oldValTup =
valMap.get(entry.key());
boolean hasBytes = entry.hasValue();
V oldVal = entry.rawGet();
V newVal = res.value(i);
byte[] newBytes = res.valueBytes(i);
GridCacheVersion dhtVer = res.dhtVersion(i);
GridCacheVersion mappedVer = res.mappedVersion(i);
// On local node don't record twice if DHT cache already recorded.
boolean record =
retval && oldValTup != null && oldValTup.get1().equals(dhtVer);
if (newVal == null) {
if (oldValTup != null) {
if (oldValTup.get1().equals(dhtVer)) {
newVal = oldValTup.get2();
newBytes = oldValTup.get3();
}
oldVal = oldValTup.get2();
}
}
// Lock is held at this point, so we can set the
// returned value if any.
entry.resetFromPrimary(newVal, newBytes, lockVer, dhtVer, node.id());
entry.readyNearLock(
lockVer,
mappedVer,
res.committedVersions(),
res.rolledbackVersions(),
res.pending());
if (inTx() && implicitTx() && tx.onePhaseCommit()) {
boolean pass = res.filterResult(i);
tx.entry(k).filters(pass ? CU.<K, V>empty() : CU.<K, V>alwaysFalse());
}
if (record) {
if (cctx.events().isRecordable(EVT_CACHE_OBJECT_READ))
cctx.events()
.addEvent(
entry.partition(),
entry.key(),
tx,
null,
EVT_CACHE_OBJECT_READ,
newVal,
newVal != null,
oldVal,
hasBytes,
CU.subjectId(tx, cctx));
cctx.cache().metrics0().onRead(oldVal != null);
}
if (log.isDebugEnabled())
log.debug(
"Processed response for entry [res="
+ res
+ ", entry="
+ entry
+ ']');
break; // Inner while loop.
} catch (GridCacheEntryRemovedException ignored) {
if (log.isDebugEnabled())
log.debug(
"Failed to add candidates because entry was "
+ "removed (will renew).");
// Replace old entry with new one.
entries.set(
i,
(GridDistributedCacheEntry<K, V>) cctx.cache().entryEx(entry.key()));
}
}
i++; // Increment outside of while loop.
}
// Proceed and add new future (if any) before completing embedded future.
proceedMapping(mappings);
} catch (GridException ex) {
onError(ex);
return false;
}
return true;
}
}));
} else {
final MiniFuture fut = new MiniFuture(node, mappedKeys, mappings);
req.miniId(fut.futureId());
add(fut); // Append new future.
GridFuture<?> txSync = null;
if (inTx()) txSync = cctx.tm().awaitFinishAckAsync(node.id(), tx.threadId());
if (txSync == null || txSync.isDone()) {
try {
if (log.isDebugEnabled())
log.debug("Sending near lock request [node=" + node.id() + ", req=" + req + ']');
cctx.io().send(node, req);
} catch (GridTopologyException ex) {
assert fut != null;
fut.onResult(ex);
}
} else {
txSync.listenAsync(
new CI1<GridFuture<?>>() {
@Override
public void apply(GridFuture<?> t) {
try {
if (log.isDebugEnabled())
log.debug(
"Sending near lock request [node=" + node.id() + ", req=" + req + ']');
cctx.io().send(node, req);
} catch (GridTopologyException ex) {
assert fut != null;
fut.onResult(ex);
} catch (GridException e) {
onError(e);
}
}
});
}
}
}
/** 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();
}
/** @param m Mapping. */
private void finish(GridDistributedTxMapping<K, V> m) {
GridNode n = m.node();
assert !m.empty();
GridNearTxFinishRequest<K, V> req =
new GridNearTxFinishRequest<>(
futId,
tx.xidVersion(),
tx.threadId(),
commit,
tx.isInvalidate(),
m.explicitLock(),
tx.topologyVersion(),
null,
null,
null,
tx.size(),
commit && tx.pessimistic() ? m.writes() : null,
commit && tx.pessimistic() ? tx.writeEntries() : null,
commit ? tx.syncCommit() : tx.syncRollback(),
tx.subjectId(),
tx.taskNameHash());
// If this is the primary node for the keys.
if (n.isLocal()) {
req.miniId(GridUuid.randomUuid());
if (CU.DHT_ENABLED) {
GridFuture<GridCacheTx> fut =
commit ? dht().commitTx(n.id(), req) : dht().rollbackTx(n.id(), req);
// Add new future.
add(fut);
} else
// Add done future for testing.
add(new GridFinishedFuture<GridCacheTx>(ctx));
} else {
MiniFuture fut = new MiniFuture(m);
req.miniId(fut.futureId());
add(fut); // Append new future.
if (tx.pessimistic()) cctx.tm().beforeFinishRemote(n.id(), tx.threadId());
try {
cctx.io().send(n, req);
// If we don't wait for result, then mark future as done.
if (!isSync() && !m.explicitLock()) fut.onDone();
} catch (GridTopologyException e) {
// Remove previous mapping.
mappings.remove(m.node().id());
fut.onResult(e);
} catch (GridException e) {
// Fail the whole thing.
fut.onResult(e);
}
}
}