/**
* Removes locks regardless of whether they are owned or not for given version and keys.
*
* @param ver Lock version.
* @param keys Keys.
*/
@SuppressWarnings({"unchecked"})
public void removeLocks(GridCacheVersion ver, Collection<? extends K> keys) {
if (keys.isEmpty()) return;
Collection<GridRichNode> nodes = ctx.remoteNodes(keys);
try {
// Send request to remove from remote nodes.
GridDistributedUnlockRequest<K, V> req = new GridDistributedUnlockRequest<K, V>(keys.size());
req.version(ver);
for (K key : keys) {
while (true) {
GridDistributedCacheEntry<K, V> entry = peekexx(key);
try {
if (entry != null) {
GridCacheMvccCandidate<K> cand = entry.candidate(ver);
if (cand != null) {
// Remove candidate from local node first.
if (entry.removeLock(cand.version())) {
// If there is only local node in this lock's topology,
// then there is no reason to distribute the request.
if (nodes.isEmpty()) continue;
req.addKey(entry.key(), entry.getOrMarshalKeyBytes(), ctx);
}
}
}
break;
} catch (GridCacheEntryRemovedException ignored) {
if (log.isDebugEnabled())
log.debug(
"Attempted to remove lock from removed entry (will retry) [rmvVer="
+ ver
+ ", entry="
+ entry
+ ']');
}
}
}
if (nodes.isEmpty()) return;
req.completedVersions(ctx.tm().committedVersions(ver), ctx.tm().rolledbackVersions(ver));
if (!req.keyBytes().isEmpty())
// We don't wait for reply to this message.
ctx.io().safeSend(nodes, req, null);
} catch (GridException ex) {
U.error(log, "Failed to unlock the lock for keys: " + keys, ex);
}
}
/**
* Processes unlock request.
*
* @param nodeId Sender node ID.
* @param req Unlock request.
*/
@SuppressWarnings({"unchecked"})
private void processUnlockRequest(UUID nodeId, GridDistributedUnlockRequest req) {
assert nodeId != null;
try {
ClassLoader ldr = ctx.deploy().globalLoader();
List<byte[]> keys = req.keyBytes();
for (byte[] keyBytes : keys) {
K key = (K) U.unmarshal(ctx.marshaller(), new ByteArrayInputStream(keyBytes), ldr);
while (true) {
boolean created = false;
GridDistributedCacheEntry<K, V> entry = peekexx(key);
if (entry == null) {
entry = entryexx(key);
created = true;
}
try {
entry.doneRemote(
req.version(), req.version(), req.committedVersions(), req.rolledbackVersions());
// Note that we don't reorder completed versions here,
// as there is no point to reorder relative to the version
// we are about to remove.
if (entry.removeLock(req.version())) {
if (log.isDebugEnabled())
log.debug("Removed lock [lockId=" + req.version() + ", key=" + key + ']');
if (created && entry.markObsolete(req.version())) removeIfObsolete(entry.key());
} else if (log.isDebugEnabled())
log.debug(
"Received unlock request for unknown candidate "
+ "(added to cancelled locks set): "
+ req);
break;
} catch (GridCacheEntryRemovedException ignored) {
if (log.isDebugEnabled())
log.debug(
"Received remove lock request for removed entry (will retry) [entry="
+ entry
+ ", req="
+ req
+ ']');
}
}
}
} catch (GridException e) {
U.error(log, "Failed to unmarshal unlock key (unlock will not be performed): " + req, e);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public void unlockAll(
Collection<? extends K> keys, GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
if (keys == null || keys.isEmpty()) return;
Collection<? extends GridNode> nodes = ctx.remoteNodes(keys);
try {
GridDistributedUnlockRequest<K, V> req = new GridDistributedUnlockRequest<K, V>(keys.size());
for (K key : keys) {
GridDistributedCacheEntry<K, V> entry = entryexx(key);
if (!ctx.isAll(entry.wrap(false), filter)) continue;
// Unlock local lock first.
GridCacheMvccCandidate<K> rmv = entry.removeLock();
if (rmv != null && !nodes.isEmpty()) {
if (!rmv.reentry()) {
req.addKey(entry.key(), entry.getOrMarshalKeyBytes(), ctx);
// We are assuming that lock ID is the same for all keys.
req.version(rmv.version());
if (log.isDebugEnabled()) log.debug("Removed lock (will distribute): " + rmv);
} else {
if (log.isDebugEnabled())
log.debug(
"Locally unlocked lock reentry without distributing to other nodes [removed="
+ rmv
+ ", entry="
+ entry
+ ']');
}
} else {
if (log.isDebugEnabled())
log.debug(
"Current thread still owns lock (or there are no other nodes) [lock="
+ rmv
+ ", curThreadId="
+ Thread.currentThread().getId()
+ ']');
}
}
// Don't proceed of no keys to unlock.
if (req.keyBytes().isEmpty()) {
if (log.isDebugEnabled())
log.debug("No keys to unlock locally (was it reentry unlock?): " + keys);
return;
}
// We don't wait for reply to this message. Receiving side will have
// to make sure that unlock requests don't come before lock requests.
ctx.io().safeSend(nodes, req, null);
} catch (GridException e) {
U.error(log, "Failed to unlock keys: " + keys, e);
}
}