/**
* 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;
}
/**
* @param nodeId Sender.
* @param res Result.
*/
void onResult(UUID nodeId, GridNearLockResponse<K, V> res) {
if (!isDone()) {
if (log.isDebugEnabled())
log.debug(
"Received lock response from node [nodeId="
+ nodeId
+ ", res="
+ res
+ ", fut="
+ this
+ ']');
for (GridFuture<Boolean> fut : pending()) {
if (isMini(fut)) {
MiniFuture mini = (MiniFuture) fut;
if (mini.futureId().equals(res.miniId())) {
assert mini.node().id().equals(nodeId);
if (log.isDebugEnabled())
log.debug("Found mini future for response [mini=" + mini + ", res=" + res + ']');
mini.onResult(res);
if (log.isDebugEnabled())
log.debug(
"Future after processed lock response [fut="
+ this
+ ", mini="
+ mini
+ ", res="
+ res
+ ']');
return;
}
}
}
U.warn(
log,
"Failed to find mini future for response (perhaps due to stale message) [res="
+ res
+ ", fut="
+ this
+ ']');
} else if (log.isDebugEnabled())
log.debug(
"Ignoring lock response from node (future is done) [nodeId="
+ nodeId
+ ", res="
+ res
+ ", fut="
+ this
+ ']');
}
/**
* @param cancel {@code True} to close with cancellation.
* @throws GridException If failed.
*/
@Override
public void close(boolean cancel) throws GridException {
if (!closed.compareAndSet(false, true)) return;
busyLock.block();
if (log.isDebugEnabled())
log.debug("Closing data loader [ldr=" + this + ", cancel=" + cancel + ']');
GridException e = null;
try {
// Assuming that no methods are called on this loader after this method is called.
if (cancel) {
cancelled = true;
for (Buffer buf : bufMappings.values()) buf.cancelAll();
} else doFlush();
ctx.event().removeLocalEventListener(discoLsnr);
ctx.io().removeMessageListener(topic);
} catch (GridException e0) {
e = e0;
}
fut.onDone(null, e);
if (e != null) throw e;
}
/** @return {@code True} if locks have been acquired. */
private boolean checkLocks() {
if (!isDone() && initialized() && !hasPending()) {
for (int i = 0; i < entries.size(); i++) {
while (true) {
GridCacheEntryEx<K, V> cached = entries.get(i);
try {
if (!locked(cached)) {
if (log.isDebugEnabled())
log.debug(
"Lock is still not acquired for entry (will keep waiting) [entry="
+ cached
+ ", fut="
+ this
+ ']');
return false;
}
break;
}
// Possible in concurrent cases, when owner is changed after locks
// have been released or cancelled.
catch (GridCacheEntryRemovedException ignore) {
if (log.isDebugEnabled())
log.debug("Got removed entry in onOwnerChanged method (will retry): " + cached);
// Replace old entry with new one.
entries.set(i, (GridDistributedCacheEntry<K, V>) cctx.cache().entryEx(cached.key()));
}
}
}
if (log.isDebugEnabled())
log.debug("Local lock acquired for entries [fut=" + this + ", entries=" + entries + "]");
onComplete(true, true);
return true;
}
return false;
}
/**
* Undoes all locks.
*
* @param dist If {@code true}, then remove locks from remote nodes as well.
*/
private void undoLocks(boolean dist) {
// Transactions will undo during rollback.
if (dist && tx == null) cctx.nearTx().removeLocks(lockVer, keys);
else {
if (tx != null) {
if (tx.setRollbackOnly()) {
if (log.isDebugEnabled())
log.debug(
"Marked transaction as rollback only because locks could not be acquired: " + tx);
} else if (log.isDebugEnabled())
log.debug(
"Transaction was not marked rollback-only while locks were not acquired: " + tx);
}
for (GridCacheEntryEx<K, V> e : entriesCopy()) {
try {
e.removeLock(lockVer);
} catch (GridCacheEntryRemovedException ignored) {
while (true) {
try {
e = cctx.cache().peekEx(e.key());
if (e != null) e.removeLock(lockVer);
break;
} catch (GridCacheEntryRemovedException ignore) {
if (log.isDebugEnabled())
log.debug(
"Attempted to remove lock on removed entry (will retry) [ver="
+ lockVer
+ ", entry="
+ e
+ ']');
}
}
}
}
}
cctx.mvcc().recheckPendingLocks();
}
/**
* @param nodeId Left node ID
* @return {@code True} if node was in the list.
*/
@SuppressWarnings({"ThrowableInstanceNeverThrown"})
@Override
public boolean onNodeLeft(UUID nodeId) {
boolean found = false;
for (GridFuture<?> fut : futures()) {
if (isMini(fut)) {
MiniFuture f = (MiniFuture) fut;
if (f.node().id().equals(nodeId)) {
if (log.isDebugEnabled())
log.debug(
"Found mini-future for left node [nodeId="
+ nodeId
+ ", mini="
+ f
+ ", fut="
+ this
+ ']');
f.onResult(newTopologyException(null, nodeId));
found = true;
}
}
}
if (!found) {
if (log.isDebugEnabled())
log.debug(
"Near lock future does not have mapping for left node (ignoring) [nodeId="
+ nodeId
+ ", fut="
+ this
+ ']');
}
return found;
}
/** {@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;
}
/** @throws GridException If operation failed. */
private void initializeLatch() throws GridException {
if (initGuard.compareAndSet(false, true)) {
try {
internalLatch =
CU.outTx(
new Callable<CountDownLatch>() {
@Override
public CountDownLatch call() throws Exception {
GridCacheTx tx =
CU.txStartInternal(ctx, latchView, PESSIMISTIC, REPEATABLE_READ);
try {
GridCacheCountDownLatchValue val = latchView.get(key);
if (val == null) {
if (log.isDebugEnabled())
log.debug("Failed to find count down latch with given name: " + name);
assert cnt == 0;
return new CountDownLatch(cnt);
}
tx.commit();
return new CountDownLatch(val.get());
} finally {
tx.end();
}
}
},
ctx);
if (log.isDebugEnabled()) log.debug("Initialized internal latch: " + internalLatch);
} finally {
initLatch.countDown();
}
} else {
try {
initLatch.await();
} catch (InterruptedException ignored) {
throw new GridException("Thread has been interrupted.");
}
if (internalLatch == null)
throw new GridException("Internal latch has not been properly initialized.");
}
}
/**
* @param rmtReducer Optional reducer.
* @param rmtTransform Optional transformer.
* @param args Arguments.
* @return Future.
*/
@SuppressWarnings("IfMayBeConditional")
private <R> GridCacheQueryFuture<R> execute(
@Nullable GridReducer<T, R> rmtReducer,
@Nullable GridClosure<T, R> rmtTransform,
@Nullable Object... args) {
Collection<GridNode> nodes = nodes();
cctx.checkSecurity(GridSecurityPermission.CACHE_READ);
if (F.isEmpty(nodes))
return new GridCacheQueryErrorFuture<>(
cctx.kernalContext(),
new GridEmptyProjectionException("There are no data nodes for cache: " + cctx.namexx()));
if (log.isDebugEnabled())
log.debug("Executing query [query=" + this + ", nodes=" + nodes + ']');
if (cctx.deploymentEnabled()) {
try {
cctx.deploy().registerClasses(filter, rmtReducer, rmtTransform);
cctx.deploy().registerClasses(args);
} catch (GridException e) {
return new GridCacheQueryErrorFuture<>(cctx.kernalContext(), e);
}
}
if (subjId == null) subjId = cctx.localNodeId();
taskHash = cctx.kernalContext().job().currentTaskNameHash();
GridCacheQueryBean bean =
new GridCacheQueryBean(
this,
(GridReducer<Object, Object>) rmtReducer,
(GridClosure<Object, Object>) rmtTransform,
args);
GridCacheQueryManager qryMgr = cctx.queries();
boolean loc = nodes.size() == 1 && F.first(nodes).id().equals(cctx.localNodeId());
if (type == SQL_FIELDS)
return (GridCacheQueryFuture<R>)
(loc ? qryMgr.queryFieldsLocal(bean) : qryMgr.queryFieldsDistributed(bean, nodes));
else
return (GridCacheQueryFuture<R>)
(loc ? qryMgr.queryLocal(bean) : qryMgr.queryDistributed(bean, nodes));
}
/**
* @param cached Entry to check.
* @return {@code True} if filter passed.
*/
private boolean filter(GridCacheEntryEx<K, V> cached) {
try {
if (!cctx.isAll(cached, filter)) {
if (log.isDebugEnabled())
log.debug("Filter didn't pass for entry (will fail lock): " + cached);
onFailed(true);
return false;
}
return true;
} catch (GridException e) {
onError(e);
return false;
}
}
/**
* Adds entry to future.
*
* @param topVer Topology version.
* @param entry Entry to add.
* @param dhtNodeId DHT node ID.
* @return Lock candidate.
* @throws GridCacheEntryRemovedException If entry was removed.
*/
@Nullable
private GridCacheMvccCandidate<K> addEntry(
long topVer, GridNearCacheEntry<K, V> entry, UUID dhtNodeId)
throws GridCacheEntryRemovedException {
// Check if lock acquisition is timed out.
if (timedOut) return null;
// Add local lock first, as it may throw GridCacheEntryRemovedException.
GridCacheMvccCandidate<K> c =
entry.addNearLocal(
dhtNodeId, threadId, lockVer, timeout, !inTx(), inTx(), implicitSingleTx());
if (inTx()) {
GridCacheTxEntry<K, V> txEntry = tx.entry(entry.key());
txEntry.cached(entry, txEntry.keyBytes());
}
if (c != null) c.topologyVersion(topVer);
synchronized (mux) {
entries.add(entry);
}
if (c == null && timeout < 0) {
if (log.isDebugEnabled()) log.debug("Failed to acquire lock with negative timeout: " + entry);
onFailed(false);
return null;
}
// Double check if lock acquisition has already timed out.
if (timedOut) {
entry.removeLock(lockVer);
return null;
}
return c;
}
/** {@inheritDoc} */
@Override
public boolean onDone(Boolean success, Throwable err) {
if (log.isDebugEnabled())
log.debug(
"Received onDone(..) callback [success="
+ success
+ ", err="
+ err
+ ", fut="
+ this
+ ']');
// If locks were not acquired yet, delay completion.
if (isDone() || (err == null && success && !checkLocks())) return false;
this.err.compareAndSet(null, err instanceof GridCacheLockTimeoutException ? null : err);
if (err != null) success = false;
return onComplete(success, true);
}
/**
* @param res Query result.
* @param err Error or {@code null} if query executed successfully.
* @param startTime Start time.
* @param duration Duration.
*/
public void onExecuted(Object res, Throwable err, long startTime, long duration) {
boolean fail = err != null;
// Update own metrics.
metrics.onQueryExecute(duration, fail);
// Update metrics in query manager.
cctx.queries().onMetricsUpdate(duration, fail);
if (log.isDebugEnabled())
log.debug(
"Query execution finished [qry="
+ this
+ ", startTime="
+ startTime
+ ", duration="
+ duration
+ ", fail="
+ fail
+ ", res="
+ res
+ ']');
}
/** 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();
}
/**
* Performs flush.
*
* @throws GridException If failed.
*/
private void doFlush() throws GridException {
lastFlushTime = U.currentTimeMillis();
List<GridFuture> activeFuts0 = null;
int doneCnt = 0;
for (GridFuture<?> f : activeFuts) {
if (!f.isDone()) {
if (activeFuts0 == null) activeFuts0 = new ArrayList<>((int) (activeFuts.size() * 1.2));
activeFuts0.add(f);
} else {
f.get();
doneCnt++;
}
}
if (activeFuts0 == null || activeFuts0.isEmpty()) return;
while (true) {
Queue<GridFuture<?>> q = null;
for (Buffer buf : bufMappings.values()) {
GridFuture<?> flushFut = buf.flush();
if (flushFut != null) {
if (q == null) q = new ArrayDeque<>(bufMappings.size() * 2);
q.add(flushFut);
}
}
if (q != null) {
assert !q.isEmpty();
boolean err = false;
for (GridFuture fut = q.poll(); fut != null; fut = q.poll()) {
try {
fut.get();
} catch (GridException e) {
if (log.isDebugEnabled()) log.debug("Failed to flush buffer: " + e);
err = true;
}
}
if (err)
// Remaps needed - flush buffers.
continue;
}
doneCnt = 0;
for (int i = 0; i < activeFuts0.size(); i++) {
GridFuture f = activeFuts0.get(i);
if (f == null) doneCnt++;
else if (f.isDone()) {
f.get();
doneCnt++;
activeFuts0.set(i, null);
} else break;
}
if (doneCnt == activeFuts0.size()) return;
}
}
/**
* @param ctx Grid kernal context.
* @param cacheName Cache name.
* @param flushQ Flush queue.
*/
public GridDataLoaderImpl(
final GridKernalContext ctx,
@Nullable final String cacheName,
DelayQueue<GridDataLoaderImpl<K, V>> flushQ) {
assert ctx != null;
this.ctx = ctx;
this.cacheName = cacheName;
this.flushQ = flushQ;
log = U.logger(ctx, logRef, GridDataLoaderImpl.class);
discoLsnr =
new GridLocalEventListener() {
@Override
public void onEvent(GridEvent evt) {
assert evt.type() == EVT_NODE_FAILED || evt.type() == EVT_NODE_LEFT;
GridDiscoveryEvent discoEvt = (GridDiscoveryEvent) evt;
UUID id = discoEvt.eventNodeId();
// Remap regular mappings.
final Buffer buf = bufMappings.remove(id);
if (buf != null) {
// Only async notification is possible since
// discovery thread may be trapped otherwise.
ctx.closure()
.callLocalSafe(
new Callable<Object>() {
@Override
public Object call() throws Exception {
buf.onNodeLeft();
return null;
}
},
true /* system pool */);
}
}
};
ctx.event().addLocalEventListener(discoLsnr, EVT_NODE_FAILED, EVT_NODE_LEFT);
// Generate unique topic for this loader.
topic = TOPIC_DATALOAD.topic(GridUuid.fromUuid(ctx.localNodeId()));
ctx.io()
.addMessageListener(
topic,
new GridMessageListener() {
@Override
public void onMessage(UUID nodeId, Object msg) {
assert msg instanceof GridDataLoadResponse;
GridDataLoadResponse res = (GridDataLoadResponse) msg;
if (log.isDebugEnabled()) log.debug("Received data load response: " + res);
Buffer buf = bufMappings.get(nodeId);
if (buf != null) buf.onResponse(res);
else if (log.isDebugEnabled())
log.debug("Ignoring response since node has left [nodeId=" + nodeId + ", ");
}
});
if (log.isDebugEnabled()) log.debug("Added response listener within topic: " + topic);
fut = new GridDataLoaderFuture(ctx, this);
}
/**
* 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);
}
}
});
}
}
}
/**
* Maps keys to nodes. Note that we can not simply group keys by nodes and send lock request as
* such approach does not preserve order of lock acquisition. Instead, keys are split in
* continuous groups belonging to one primary node and locks for these groups are acquired
* sequentially.
*
* @param keys Keys.
*/
private void map(Iterable<? extends K> keys) {
try {
GridDiscoveryTopologySnapshot snapshot = topSnapshot.get();
assert snapshot != null;
long topVer = snapshot.topologyVersion();
assert topVer > 0;
if (CU.affinityNodes(cctx, topVer).isEmpty()) {
onDone(
new GridTopologyException(
"Failed to map keys for near-only cache (all "
+ "partition nodes left the grid)."));
return;
}
ConcurrentLinkedDeque8<GridNearLockMapping<K, V>> mappings = new ConcurrentLinkedDeque8<>();
// Assign keys to primary nodes.
GridNearLockMapping<K, V> map = null;
for (K key : keys) {
GridNearLockMapping<K, V> updated = map(key, map, topVer);
// If new mapping was created, add to collection.
if (updated != map) mappings.add(updated);
map = updated;
}
if (isDone()) {
if (log.isDebugEnabled()) log.debug("Abandoning (re)map because future is done: " + this);
return;
}
if (log.isDebugEnabled())
log.debug("Starting (re)map for mappings [mappings=" + mappings + ", fut=" + this + ']');
// Create mini futures.
for (Iterator<GridNearLockMapping<K, V>> iter = mappings.iterator(); iter.hasNext(); ) {
GridNearLockMapping<K, V> mapping = iter.next();
GridNode node = mapping.node();
Collection<K> mappedKeys = mapping.mappedKeys();
assert !mappedKeys.isEmpty();
GridNearLockRequest<K, V> req = null;
Collection<K> distributedKeys = new ArrayList<>(mappedKeys.size());
boolean explicit = false;
for (K key : mappedKeys) {
while (true) {
GridNearCacheEntry<K, V> entry = null;
try {
entry = cctx.near().entryExx(key, topVer);
if (!cctx.isAll(entry.wrap(false), filter)) {
if (log.isDebugEnabled())
log.debug("Entry being locked did not pass filter (will not lock): " + entry);
onComplete(false, false);
return;
}
// Removed exception may be thrown here.
GridCacheMvccCandidate<K> cand = addEntry(topVer, entry, node.id());
if (isDone()) {
if (log.isDebugEnabled())
log.debug(
"Abandoning (re)map because future is done after addEntry attempt "
+ "[fut="
+ this
+ ", entry="
+ entry
+ ']');
return;
}
if (cand != null) {
if (tx == null && !cand.reentry())
cctx.mvcc().addExplicitLock(threadId, cand, snapshot);
GridTuple3<GridCacheVersion, V, byte[]> val = entry.versionedValue();
if (val == null) {
GridDhtCacheEntry<K, V> dhtEntry = dht().peekExx(key);
try {
if (dhtEntry != null) val = dhtEntry.versionedValue(topVer);
} catch (GridCacheEntryRemovedException ignored) {
assert dhtEntry.obsolete()
: " Got removed exception for non-obsolete entry: " + dhtEntry;
if (log.isDebugEnabled())
log.debug(
"Got removed exception for DHT entry in map (will ignore): " + dhtEntry);
}
}
GridCacheVersion dhtVer = null;
if (val != null) {
dhtVer = val.get1();
valMap.put(key, val);
}
if (!cand.reentry()) {
if (req == null) {
req =
new GridNearLockRequest<>(
topVer,
cctx.nodeId(),
threadId,
futId,
lockVer,
inTx(),
implicitTx(),
implicitSingleTx(),
read,
isolation(),
isInvalidate(),
timeout,
syncCommit(),
syncRollback(),
mappedKeys.size(),
inTx() ? tx.size() : mappedKeys.size(),
inTx() ? tx.groupLockKey() : null,
inTx() && tx.partitionLock(),
inTx() ? tx.subjectId() : null);
mapping.request(req);
}
distributedKeys.add(key);
GridCacheTxEntry<K, V> writeEntry = tx != null ? tx.writeMap().get(key) : null;
if (tx != null) tx.addKeyMapping(key, mapping.node());
req.addKeyBytes(
key,
node.isLocal() ? null : entry.getOrMarshalKeyBytes(),
retval && dhtVer == null,
dhtVer, // Include DHT version to match remote DHT entry.
writeEntry,
inTx() ? tx.entry(key).drVersion() : null,
cctx);
// Clear transfer required flag since we are sending message.
if (writeEntry != null) writeEntry.transferRequired(false);
}
if (cand.reentry())
explicit = tx != null && !entry.hasLockCandidate(tx.xidVersion());
} else
// Ignore reentries within transactions.
explicit = tx != null && !entry.hasLockCandidate(tx.xidVersion());
if (explicit) tx.addKeyMapping(key, mapping.node());
break;
} catch (GridCacheEntryRemovedException ignored) {
assert entry.obsolete() : "Got removed exception on non-obsolete entry: " + entry;
if (log.isDebugEnabled())
log.debug("Got removed entry in lockAsync(..) method (will retry): " + entry);
}
}
// Mark mapping explicit lock flag.
if (explicit) {
boolean marked = tx != null && tx.markExplicit(node.id());
assert tx == null || marked;
}
}
if (!distributedKeys.isEmpty()) mapping.distributedKeys(distributedKeys);
else {
assert mapping.request() == null;
iter.remove();
}
}
cctx.mvcc().recheckPendingLocks();
proceedMapping(mappings);
} catch (GridException ex) {
onError(ex);
}
}