/**
* 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;
}
/** @param res Result callback. */
void onResult(GridNearLockResponse<K, V> res) {
if (rcvRes.compareAndSet(false, true)) {
if (res.error() != null) {
if (log.isDebugEnabled())
log.debug(
"Finishing mini future with an error due to error in response [miniFut="
+ this
+ ", res="
+ res
+ ']');
// Fail.
if (res.error() instanceof GridCacheLockTimeoutException) onDone(false);
else onDone(res.error());
return;
}
int i = 0;
long topVer = topSnapshot.get().topologyVersion();
for (K k : keys) {
while (true) {
GridNearCacheEntry<K, V> entry = cctx.near().entryExx(k, topVer);
try {
if (res.dhtVersion(i) == null) {
onDone(
new GridException(
"Failed to receive DHT version from remote node "
+ "(will fail the lock): "
+ res));
return;
}
GridTuple3<GridCacheVersion, V, byte[]> oldValTup = valMap.get(entry.key());
V oldVal = entry.rawGet();
boolean hasOldVal = false;
V newVal = res.value(i);
byte[] newBytes = res.valueBytes(i);
boolean readRecordable = false;
if (retval) {
readRecordable = cctx.events().isRecordable(EVT_CACHE_OBJECT_READ);
if (readRecordable) hasOldVal = entry.hasValue();
}
GridCacheVersion dhtVer = res.dhtVersion(i);
GridCacheVersion mappedVer = res.mappedVersion(i);
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());
if (inTx() && implicitTx() && tx.onePhaseCommit()) {
boolean pass = res.filterResult(i);
tx.entry(k).filters(pass ? CU.<K, V>empty() : CU.<K, V>alwaysFalse());
}
entry.readyNearLock(
lockVer,
mappedVer,
res.committedVersions(),
res.rolledbackVersions(),
res.pending());
if (retval) {
if (readRecordable)
cctx.events()
.addEvent(
entry.partition(),
entry.key(),
tx,
null,
EVT_CACHE_OBJECT_READ,
newVal,
newVal != null || newBytes != null,
oldVal,
hasOldVal,
CU.subjectId(tx, cctx));
cctx.cache().metrics0().onRead(false);
}
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()));
} catch (GridException e) {
onDone(e);
return;
}
}
i++;
}
try {
proceedMapping(mappings);
} catch (GridException e) {
onDone(e);
}
onDone(true);
}
}