/**
* @param nodeId Node ID.
* @return Class loader ID for node ID.
*/
GridTuple2<GridUuid, Long> getClassLoaderId(UUID nodeId) {
assert nodeId != null;
assert Thread.holdsLock(mux);
return loader().registeredClassLoaderId(nodeId);
}
/**
* Checks if node is participating in deployment.
*
* @param nodeId Node ID to check.
* @param ldrId Class loader ID.
* @return {@code True} if node is participating in deployment.
*/
boolean hasParticipant(UUID nodeId, GridUuid ldrId) {
assert nodeId != null;
assert ldrId != null;
assert Thread.holdsLock(mux);
return loader().hasRegisteredNode(nodeId, ldrId);
}
/** {@inheritDoc} */
@Override
public void loadCache(GridBiInClosure<K, V> c, @Nullable Object... args) throws GridException {
ExecutorService exec =
new ThreadPoolExecutor(
threadsCnt,
threadsCnt,
0L,
MILLISECONDS,
new ArrayBlockingQueue<Runnable>(batchQueueSize),
new BlockingRejectedExecutionHandler());
Iterator<I> iter = inputIterator(args);
Collection<I> buf = new ArrayList<>(batchSize);
try {
while (iter.hasNext()) {
if (Thread.currentThread().isInterrupted()) {
U.warn(log, "Working thread was interrupted while loading data.");
break;
}
buf.add(iter.next());
if (buf.size() == batchSize) {
exec.submit(new Worker(c, buf, args));
buf = new ArrayList<>(batchSize);
}
}
if (!buf.isEmpty()) exec.submit(new Worker(c, buf, args));
} catch (RejectedExecutionException ignored) {
// Because of custom RejectedExecutionHandler.
assert false : "RejectedExecutionException was thrown while it shouldn't.";
} finally {
exec.shutdown();
try {
exec.awaitTermination(Long.MAX_VALUE, MILLISECONDS);
} catch (InterruptedException ignored) {
U.warn(log, "Working thread was interrupted while waiting for put operations to complete.");
Thread.currentThread().interrupt();
}
}
}
/** @throws Exception If failed. */
public void testDisabledRest() throws Exception {
restEnabled = false;
final Grid g = startGrid("disabled-rest");
try {
Thread.sleep(2 * TOP_REFRESH_FREQ);
// As long as we have round robin load balancer this will cause every node to be queried.
for (int i = 0; i < NODES_CNT + 1; i++)
assertEquals(NODES_CNT + 1, client.compute().refreshTopology(false, false).size());
final GridClientData data = client.data(PARTITIONED_CACHE_NAME);
// Check rest-disabled node is unavailable.
try {
String affKey;
do {
affKey = UUID.randomUUID().toString();
} while (!data.affinity(affKey).equals(g.localNode().id()));
data.put(affKey, "asdf");
assertEquals("asdf", cache(0, PARTITIONED_CACHE_NAME).get(affKey));
} catch (GridServerUnreachableException e) {
// Thrown for direct client-node connections.
assertTrue(
"Unexpected exception message: " + e.getMessage(),
e.getMessage()
.startsWith("No available endpoints to connect (is rest enabled for this node?)"));
} catch (GridClientException e) {
// Thrown for routed client-router-node connections.
String msg = e.getMessage();
assertTrue(
"Unexpected exception message: " + msg,
protocol() == GridClientProtocol.TCP
? msg.contains("No available endpoints to connect (is rest enabled for this node?)")
: // TCP router.
msg.startsWith(
"No available nodes on the router for destination node ID")); // HTTP router.
}
// Check rest-enabled nodes are available.
String affKey;
do {
affKey = UUID.randomUUID().toString();
} while (data.affinity(affKey).equals(g.localNode().id()));
data.put(affKey, "fdsa");
assertEquals("fdsa", cache(0, PARTITIONED_CACHE_NAME).get(affKey));
} finally {
restEnabled = true;
G.stop(g.name(), true);
}
}
/** @throws Exception If failed. */
public void testAffinityPut() throws Exception {
Thread.sleep(2 * TOP_REFRESH_FREQ);
assertEquals(NODES_CNT, client.compute().refreshTopology(false, false).size());
Map<UUID, Grid> gridsByLocNode = new HashMap<>(NODES_CNT);
GridClientData partitioned = client.data(PARTITIONED_CACHE_NAME);
GridClientCompute compute = client.compute();
for (int i = 0; i < NODES_CNT; i++) gridsByLocNode.put(grid(i).localNode().id(), grid(i));
for (int i = 0; i < 100; i++) {
String key = "key" + i;
UUID primaryNodeId = grid(0).mapKeyToNode(PARTITIONED_CACHE_NAME, key).id();
assertEquals("Affinity mismatch for key: " + key, primaryNodeId, partitioned.affinity(key));
assertEquals(primaryNodeId, partitioned.affinity(key));
// Must go to primary node only. Since backup count is 0, value must present on
// primary node only.
partitioned.put(key, "val" + key);
for (Map.Entry<UUID, Grid> entry : gridsByLocNode.entrySet()) {
Object val = entry.getValue().cache(PARTITIONED_CACHE_NAME).peek(key);
if (primaryNodeId.equals(entry.getKey())) assertEquals("val" + key, val);
else assertNull(val);
}
}
// Now check that we will see value in near cache in pinned mode.
for (int i = 100; i < 200; i++) {
String pinnedKey = "key" + i;
UUID primaryNodeId = grid(0).mapKeyToNode(PARTITIONED_CACHE_NAME, pinnedKey).id();
UUID pinnedNodeId = F.first(F.view(gridsByLocNode.keySet(), F.notEqualTo(primaryNodeId)));
GridClientNode node = compute.node(pinnedNodeId);
partitioned.pinNodes(node).put(pinnedKey, "val" + pinnedKey);
for (Map.Entry<UUID, Grid> entry : gridsByLocNode.entrySet()) {
Object val = entry.getValue().cache(PARTITIONED_CACHE_NAME).peek(pinnedKey);
if (primaryNodeId.equals(entry.getKey()) || pinnedNodeId.equals(entry.getKey()))
assertEquals("val" + pinnedKey, val);
else assertNull(val);
}
}
}
/** {@inheritDoc} */
@Override
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
try {
if (executor.isShutdown()) throw new RejectedExecutionException();
else executor.getQueue().put(r);
} catch (InterruptedException ignored) {
U.warn(log, "Working thread was interrupted while loading data.");
Thread.currentThread().interrupt();
}
}
/**
* Adds new participant to deployment.
*
* @param dep Shared deployment.
* @param meta Request metadata.
* @return {@code True} if participant was added.
*/
private boolean addParticipant(SharedDeployment dep, GridDeploymentMetadata meta) {
assert dep != null;
assert meta != null;
assert Thread.holdsLock(mux);
if (!checkModeMatch(dep, meta)) return false;
if (meta.participants() != null) {
for (Map.Entry<UUID, GridTuple2<GridUuid, Long>> e : meta.participants().entrySet()) {
dep.addParticipant(e.getKey(), e.getValue().get1(), e.getValue().get2());
if (log.isDebugEnabled())
log.debug(
"Added new participant [nodeId="
+ e.getKey()
+ ", clsLdrId="
+ e.getValue().get1()
+ ", seqNum="
+ e.getValue().get2()
+ ']');
}
}
if (dep.deployMode() == CONTINUOUS || meta.participants() == null) {
if (!dep.addParticipant(meta.senderNodeId(), meta.classLoaderId(), meta.sequenceNumber())) {
U.warn(
log,
"Failed to create shared mode deployment "
+ "(requested class loader was already undeployed, did sender node leave grid?) "
+ "[clsLdrId="
+ meta.classLoaderId()
+ ", senderNodeId="
+ meta.senderNodeId()
+ ']');
return false;
}
if (log.isDebugEnabled())
log.debug(
"Added new participant [nodeId="
+ meta.senderNodeId()
+ ", clsLdrId="
+ meta.classLoaderId()
+ ", seqNum="
+ meta.sequenceNumber()
+ ']');
}
return true;
}
/** @param nodeId Node ID to remove. */
void removeParticipant(UUID nodeId) {
assert nodeId != null;
assert Thread.holdsLock(mux);
GridUuid ldrId = loader().unregister(nodeId);
if (log.isDebugEnabled()) log.debug("Registering dead class loader ID: " + ldrId);
synchronized (mux) {
deadClsLdrs.add(ldrId);
}
}
/**
* @param meta Request metadata.
* @return {@code True} if class loader is obsolete.
*/
private boolean isDeadClassLoader(GridDeploymentMetadata meta) {
assert Thread.holdsLock(mux);
synchronized (mux) {
if (deadClsLdrs.contains(meta.classLoaderId())) {
if (log.isDebugEnabled()) log.debug("Ignoring request for obsolete class loader: " + meta);
return true;
}
return false;
}
}
/** Sets property removed. */
void onRemoved() {
assert Thread.holdsLock(mux);
removed = true;
Collection<GridUuid> deadIds = loader().registeredClassLoaderIds();
if (log.isDebugEnabled()) log.debug("Registering dead class loader IDs: " + deadIds);
synchronized (mux) {
deadClsLdrs.addAll(deadIds);
}
}
/**
* Executes example.
*
* @param args Command line arguments, none required.
* @throws GridException If example execution failed.
*/
public static void main(String[] args) throws Exception {
try (Grid grid = GridGain.start("examples/config/example-cache.xml")) {
System.out.println();
System.out.println(">>> Events API example started.");
// Listen to events happening on local node.
localListen();
// Listen to events happening on all grid nodes.
remoteListen();
// Wait for a while while callback is notified about remaining puts.
Thread.sleep(1000);
}
}
/**
* @param nodeId Grid node ID.
* @param ldrId Class loader ID.
* @param seqNum Sequence number for the class loader.
* @return Whether actually added or not.
*/
boolean addParticipant(UUID nodeId, GridUuid ldrId, long seqNum) {
assert nodeId != null;
assert ldrId != null;
assert Thread.holdsLock(mux);
synchronized (mux) {
if (!deadClsLdrs.contains(ldrId)) {
loader().register(nodeId, ldrId, seqNum);
return true;
}
return false;
}
}
/**
* Basically, future mapping consists from two parts. First, we must determine the topology
* version this future will map on. Locking is performed within a user transaction, we must
* continue to map keys on the same topology version as it started. If topology version is
* undefined, we get current topology future and wait until it completes so the topology is ready
* to use.
*
* <p>During the second part we map keys to primary nodes using topology snapshot we obtained
* during the first part. Note that if primary node leaves grid, the future will fail and
* transaction will be rolled back.
*/
void map() {
// Obtain the topology version to use.
GridDiscoveryTopologySnapshot snapshot =
tx != null
? tx.topologySnapshot()
: cctx.mvcc().lastExplicitLockTopologySnapshot(Thread.currentThread().getId());
if (snapshot != null) {
// Continue mapping on the same topology version as it was before.
topSnapshot.compareAndSet(null, snapshot);
map(keys);
markInitialized();
return;
}
// Must get topology snapshot and map on that version.
mapOnTopology();
}
/** Notifies all registered listeners. */
private void notifyListeners() {
final Collection<GridInClosure<? super GridFuture<R>>> tmp;
synchronized (mux) {
tmp = new ArrayList<GridInClosure<? super GridFuture<R>>>(lsnrs);
}
boolean concurNotify = this.concurNotify;
boolean syncNotify = this.syncNotify;
if (concurNotify) {
for (final GridInClosure<? super GridFuture<R>> lsnr : tmp)
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
notifyListener(lsnr);
}
},
true);
} else {
// Always notify in the thread different from start thread.
if (Thread.currentThread() == thread && !syncNotify) {
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
// Since concurrent notifications are off, we notify
// all listeners in one thread.
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
},
true);
} else {
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
}
}
/**
* @param cctx Registry.
* @param keys Keys to lock.
* @param tx Transaction.
* @param read Read flag.
* @param retval Flag to return value or not.
* @param timeout Lock acquisition timeout.
* @param filter Filter.
*/
public GridNearLockFuture(
GridCacheContext<K, V> cctx,
Collection<? extends K> keys,
@Nullable GridNearTxLocal<K, V> tx,
boolean read,
boolean retval,
long timeout,
GridPredicate<GridCacheEntry<K, V>>[] filter) {
super(cctx.kernalContext(), CU.boolReducer());
assert cctx != null;
assert keys != null;
this.cctx = cctx;
this.keys = keys;
this.tx = tx;
this.read = read;
this.retval = retval;
this.timeout = timeout;
this.filter = filter;
threadId = tx == null ? Thread.currentThread().getId() : tx.threadId();
lockVer = tx != null ? tx.xidVersion() : cctx.versions().next();
futId = GridUuid.randomUuid();
entries = new ArrayList<>(keys.size());
log = U.logger(ctx, logRef, GridNearLockFuture.class);
if (timeout > 0) {
timeoutObj = new LockTimeoutObject();
cctx.time().addTimeoutObject(timeoutObj);
}
valMap = new ConcurrentHashMap8<>(keys.size(), 1f);
}
/**
* Called to record all undeployed classes..
*
* @param leftNodeId Left node ID.
*/
void recordUndeployed(@Nullable UUID leftNodeId) {
assert !Thread.holdsLock(mux);
for (Map.Entry<String, Class<?>> depCls : deployedClassMap().entrySet()) {
boolean isTask = isTask(depCls.getValue());
String msg =
(isTask ? "Task" : "Class")
+ " was undeployed in SHARED or CONTINUOUS mode: "
+ depCls.getValue();
int type = isTask ? EVT_TASK_UNDEPLOYED : EVT_CLASS_UNDEPLOYED;
if (ctx.event().isRecordable(type)) {
GridDeploymentEvent evt = new GridDeploymentEvent();
evt.nodeId(ctx.localNodeId());
evt.message(msg);
evt.type(type);
evt.alias(depCls.getKey());
ctx.event().record(evt);
}
if (log.isInfoEnabled()) log.info(msg);
}
if (isObsolete()) {
// Resource cleanup.
ctx.resource().onUndeployed(this);
ctx.cache().onUndeployed(leftNodeId, loader());
clearSerializationCaches();
}
}
/** {@inheritDoc} */
@Override
public void onDeployed(Class<?> cls) {
assert !Thread.holdsLock(mux);
boolean isTask = isTask(cls);
String msg =
(isTask ? "Task" : "Class") + " was deployed in SHARED or CONTINUOUS mode: " + cls;
int type = isTask ? EVT_TASK_DEPLOYED : EVT_CLASS_DEPLOYED;
if (ctx.event().isRecordable(type)) {
GridDeploymentEvent evt = new GridDeploymentEvent();
evt.nodeId(ctx.localNodeId());
evt.message(msg);
evt.type(type);
evt.alias(cls.getName());
ctx.event().record(evt);
}
if (log.isInfoEnabled()) log.info(msg);
}
/** {@inheritDoc} */
@Override
public void unlockAll(
Collection<? extends K> keys, GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
if (keys.isEmpty()) return;
try {
GridCacheVersion ver = null;
Collection<GridRichNode> affNodes = null;
int keyCnt = -1;
Map<GridRichNode, GridNearUnlockRequest<K, V>> map = null;
Collection<K> locKeys = new LinkedList<K>();
GridCacheVersion obsoleteVer = ctx.versions().next();
for (K key : keys) {
while (true) {
GridDistributedCacheEntry<K, V> entry = peekExx(key);
if (entry == null || !ctx.isAll(entry.wrap(false), filter)) break; // While.
try {
GridCacheMvccCandidate<K> cand =
entry.candidate(ctx.nodeId(), Thread.currentThread().getId());
if (cand != null) {
ver = cand.version();
if (affNodes == null) {
affNodes = CU.allNodes(ctx, cand.topologyVersion());
keyCnt = (int) Math.ceil((double) keys.size() / affNodes.size());
map = new HashMap<GridRichNode, GridNearUnlockRequest<K, V>>(affNodes.size());
}
// Send request to remove from remote nodes.
GridRichNode primary = CU.primary0(ctx.affinity(key, affNodes));
GridNearUnlockRequest<K, V> req = map.get(primary);
if (req == null) {
map.put(primary, req = new GridNearUnlockRequest<K, V>(keyCnt));
req.version(ver);
}
// Remove candidate from local node first.
GridCacheMvccCandidate<K> rmv = entry.removeLock();
if (rmv != null) {
if (!rmv.reentry()) {
if (ver != null && !ver.equals(rmv.version()))
throw new GridException(
"Failed to unlock (if keys were locked separately, "
+ "then they need to be unlocked separately): "
+ keys);
if (!primary.isLocal()) {
assert req != null;
req.addKey(entry.key(), entry.getOrMarshalKeyBytes(), ctx);
} else locKeys.add(key);
if (log.isDebugEnabled()) log.debug("Removed lock (will distribute): " + rmv);
} else if (log.isDebugEnabled())
log.debug(
"Current thread still owns lock (or there are no other nodes)"
+ " [lock="
+ rmv
+ ", curThreadId="
+ Thread.currentThread().getId()
+ ']');
}
// Try to evict near entry if it's dht-mapped locally.
evictNearEntry(entry, obsoleteVer);
}
break;
} catch (GridCacheEntryRemovedException ignore) {
if (log.isDebugEnabled())
log.debug("Attempted to unlock removed entry (will retry): " + entry);
}
}
}
if (ver == null) return;
for (Map.Entry<GridRichNode, GridNearUnlockRequest<K, V>> mapping : map.entrySet()) {
GridRichNode n = mapping.getKey();
GridDistributedUnlockRequest<K, V> req = mapping.getValue();
if (n.isLocal()) dht.removeLocks(ctx.nodeId(), req.version(), locKeys, true);
else if (!req.keyBytes().isEmpty())
// We don't wait for reply to this message.
ctx.io().send(n, req);
}
} catch (GridException ex) {
U.error(log, "Failed to unlock the lock for keys: " + keys, ex);
}
}
/** {@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);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked", "ThrowableInstanceNeverThrown"})
@Override
protected GridFuture<Boolean> lockAllAsync(
Collection<? extends K> keys,
long timeout,
GridCacheTxLocalEx<K, V> tx,
boolean isInvalidate,
boolean isRead,
boolean retval,
GridCacheTxIsolation isolation,
GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
if (keys.isEmpty()) return new GridFinishedFuture<Boolean>(ctx.kernalContext(), true);
Collection<GridRichNode> nodes = ctx.remoteNodes(keys);
final GridReplicatedLockFuture<K, V> fut =
new GridReplicatedLockFuture<K, V>(ctx, keys, tx, this, nodes, timeout, filter);
GridDistributedLockRequest<K, V> req =
new GridDistributedLockRequest<K, V>(
locNodeId,
Thread.currentThread().getId(),
fut.futureId(),
fut.version(),
tx != null,
isRead,
isolation,
isInvalidate,
timeout,
keys.size());
try {
// Must add future before redying locks.
if (!ctx.mvcc().addFuture(fut))
throw new IllegalStateException("Duplicate future ID: " + fut);
boolean distribute = false;
for (K key : keys) {
while (true) {
GridDistributedCacheEntry<K, V> entry = null;
try {
entry = entryexx(key);
if (!ctx.isAll(entry.wrap(false), filter)) {
if (log.isDebugEnabled())
log.debug("Entry being locked did not pass filter (will not lock): " + entry);
fut.onDone(false);
return fut;
}
// Removed exception may be thrown here.
GridCacheMvccCandidate<K> cand = fut.addEntry(entry);
if (cand != null) {
req.addKeyBytes(
key,
cand.reentry() ? null : entry.getOrMarshalKeyBytes(),
retval,
entry.localCandidates(fut.version()),
ctx);
req.completedVersions(
ctx.tm().committedVersions(fut.version()),
ctx.tm().rolledbackVersions(fut.version()));
distribute = !cand.reentry();
} else if (fut.isDone()) return fut;
break;
} catch (GridCacheEntryRemovedException ignored) {
if (log.isDebugEnabled())
log.debug("Got removed entry in lockAsync(..) method (will retry): " + entry);
}
}
}
// If nothing to distribute at this point,
// then all locks are reentries.
if (!distribute) fut.complete(true);
if (nodes.isEmpty()) fut.readyLocks();
// No reason to send request if all locks are locally re-entered,
// or if timeout is negative and local locks could not be acquired.
if (fut.isDone()) return fut;
try {
ctx.io()
.safeSend(
fut.nodes(),
req,
new P1<GridNode>() {
@Override
public boolean apply(GridNode node) {
fut.onNodeLeft(node.id());
return !fut.isDone();
}
});
} catch (GridException e) {
U.error(
log,
"Failed to send lock request to node [nodes="
+ U.toShortString(nodes)
+ ", req="
+ req
+ ']',
e);
fut.onError(e);
}
return fut;
} catch (GridException e) {
Throwable err = new GridException("Failed to acquire asynchronous lock for keys: " + keys, e);
// Clean-up.
fut.onError(err);
ctx.mvcc().removeFuture(fut);
return fut;
}
}
/** @return Set of participating nodes. */
Collection<UUID> getParticipantNodeIds() {
assert Thread.holdsLock(mux);
return loader().registeredNodeIds();
}
/**
* Creates and caches new deployment.
*
* @param meta Deployment metadata.
* @param isCache Whether or not to cache.
* @return New deployment.
*/
private SharedDeployment createNewDeployment(GridDeploymentMetadata meta, boolean isCache) {
assert Thread.holdsLock(mux);
assert meta.parentLoader() == null;
GridUuid ldrId = GridUuid.randomUuid();
GridDeploymentClassLoader clsLdr;
if (meta.deploymentMode() == CONTINUOUS || meta.participants() == null) {
// Create peer class loader.
// Note that we are passing empty list for local P2P exclude, as it really
// does not make sense with shared deployment.
clsLdr =
new GridDeploymentClassLoader(
ldrId,
meta.userVersion(),
meta.deploymentMode(),
false,
ctx,
ctxLdr,
meta.classLoaderId(),
meta.senderNodeId(),
meta.sequenceNumber(),
comm,
ctx.config().getNetworkTimeout(),
log,
ctx.config().getPeerClassLoadingClassPathExclude(),
ctx.config().getPeerClassLoadingMissedResourcesCacheSize(),
meta.deploymentMode() == CONTINUOUS /* enable class byte cache in CONTINUOUS mode */);
if (meta.participants() != null)
for (Map.Entry<UUID, GridTuple2<GridUuid, Long>> e : meta.participants().entrySet())
clsLdr.register(e.getKey(), e.getValue().get1(), e.getValue().get2());
if (log.isDebugEnabled())
log.debug(
"Created class loader in CONTINUOUS mode or without participants "
+ "[ldr="
+ clsLdr
+ ", meta="
+ meta
+ ']');
} else {
assert meta.deploymentMode() == SHARED;
// Create peer class loader.
// Note that we are passing empty list for local P2P exclude, as it really
// does not make sense with shared deployment.
clsLdr =
new GridDeploymentClassLoader(
ldrId,
meta.userVersion(),
meta.deploymentMode(),
false,
ctx,
ctxLdr,
meta.participants(),
comm,
ctx.config().getNetworkTimeout(),
log,
ctx.config().getPeerClassLoadingClassPathExclude(),
ctx.config().getPeerClassLoadingMissedResourcesCacheSize(),
false);
if (log.isDebugEnabled())
log.debug(
"Created classloader in SHARED mode with participants "
+ "[ldr="
+ clsLdr
+ ", meta="
+ meta
+ ']');
}
// Give this deployment a unique class loader to emphasize that this
// ID is unique to this shared deployment and is not ID of loader on
// sender node.
SharedDeployment dep =
new SharedDeployment(
meta.deploymentMode(), clsLdr, ldrId, -1, meta.userVersion(), meta.alias());
if (log.isDebugEnabled()) log.debug("Created new deployment: " + dep);
if (isCache) {
List<SharedDeployment> deps =
F.addIfAbsent(cache, meta.userVersion(), new LinkedList<SharedDeployment>());
assert deps != null;
deps.add(dep);
if (log.isDebugEnabled()) log.debug("Added deployment to cache: " + cache);
}
return dep;
}
/**
* Removes obsolete deployments in case of redeploy.
*
* @param meta Request metadata.
* @return List of shares deployment.
*/
private GridTuple2<Boolean, SharedDeployment> checkRedeploy(GridDeploymentMetadata meta) {
assert Thread.holdsLock(mux);
SharedDeployment newDep = null;
for (List<SharedDeployment> deps : cache.values()) {
for (SharedDeployment dep : deps) {
if (!dep.isUndeployed() && !dep.isPendingUndeploy()) {
long undeployTimeout = ctx.config().getNetworkTimeout();
SharedDeployment doomed = null;
// Only check deployments with no participants.
if (!dep.hasParticipants()) {
// In case of SHARED deployment it is possible to get hear if
// unmarshalling happens during undeploy. In this case, we
// simply don't do anything.
if (dep.deployMode() == CONTINUOUS) {
if (dep.existingDeployedClass(meta.className()) != null) {
// Change from shared deploy to shared undeploy or user version change.
// Simply remove all deployments with no participating nodes.
if (meta.deploymentMode() == SHARED
|| !meta.userVersion().equals(dep.userVersion())) doomed = dep;
}
}
}
// If there are participants, we undeploy if class loader ID on some node changed.
else if (dep.existingDeployedClass(meta.className()) != null) {
GridTuple2<GridUuid, Long> ldr = dep.getClassLoaderId(meta.senderNodeId());
if (ldr != null) {
if (!ldr.get1().equals(meta.classLoaderId())) {
// If deployed sequence number is less, then schedule for undeployment.
if (ldr.get2() < meta.sequenceNumber()) {
if (log.isDebugEnabled())
log.debug(
"Received request for a class with newer sequence number "
+ "(will schedule current class for undeployment) [newSeq="
+ meta.sequenceNumber()
+ ", oldSeq="
+ ldr.get2()
+ ", senderNodeId="
+ meta.senderNodeId()
+ ", newClsLdrId="
+ meta.classLoaderId()
+ ", oldClsLdrId="
+ ldr.get1()
+ ']');
doomed = dep;
} else if (ldr.get2() > meta.sequenceNumber()) {
long time = System.currentTimeMillis() - dep.timestamp();
if (newDep == null && time < ctx.config().getNetworkTimeout()) {
// Set undeployTimeout, so the class will be scheduled
// for undeployment.
undeployTimeout = ctx.config().getNetworkTimeout() - time;
if (log.isDebugEnabled())
log.debug(
"Received execution request for a stale class (will deploy and "
+ "schedule undeployment in "
+ undeployTimeout
+ "ms) "
+ "[curSeq="
+ ldr.get2()
+ ", staleSeq="
+ meta.sequenceNumber()
+ ", cls="
+ meta.className()
+ ", senderNodeId="
+ meta.senderNodeId()
+ ", curLdrId="
+ ldr.get1()
+ ", staleLdrId="
+ meta.classLoaderId()
+ ']');
// We got the redeployed class before the old one.
// Simply create a temporary deployment for the sender node,
// and schedule undeploy for it.
newDep = createNewDeployment(meta, false);
doomed = newDep;
} else {
U.warn(
log,
"Received execution request for a class that has been redeployed "
+ "(will ignore): "
+ meta.alias());
if (log.isDebugEnabled())
log.debug(
"Received execution request for a class that has been redeployed "
+ "(will ignore) [alias="
+ meta.alias()
+ ", dep="
+ dep
+ ']');
return F.t(false, null);
}
} else {
U.error(
log,
"Sequence number does not correspond to class loader ID [seqNum="
+ meta.sequenceNumber()
+ ", dep="
+ dep
+ ']');
return F.t(false, null);
}
}
}
}
if (doomed != null) {
doomed.onUndeployScheduled();
if (log.isDebugEnabled()) log.debug("Deployment was scheduled for undeploy: " + doomed);
// Lifespan time.
final long endTime = System.currentTimeMillis() + undeployTimeout;
// Deployment to undeploy.
final SharedDeployment undep = doomed;
ctx.timeout()
.addTimeoutObject(
new GridTimeoutObject() {
@Override
public GridUuid timeoutId() {
return undep.classLoaderId();
}
@Override
public long endTime() {
return endTime < 0 ? Long.MAX_VALUE : endTime;
}
@Override
public void onTimeout() {
boolean removed = false;
// Hot redeployment.
synchronized (mux) {
assert undep.isPendingUndeploy();
if (!undep.isUndeployed()) {
undep.undeploy();
undep.onRemoved();
removed = true;
Collection<SharedDeployment> deps = cache.get(undep.userVersion());
if (deps != null) {
for (Iterator<SharedDeployment> i = deps.iterator(); i.hasNext(); )
if (i.next() == undep) i.remove();
if (deps.isEmpty()) cache.remove(undep.userVersion());
}
if (log.isInfoEnabled())
log.info(
"Undeployed class loader due to deployment mode change, "
+ "user version change, or hot redeployment: "
+ undep);
}
}
// Outside synchronization.
if (removed) undep.recordUndeployed(null);
}
});
}
}
}
}
if (newDep != null) {
List<SharedDeployment> list =
F.addIfAbsent(cache, meta.userVersion(), F.<SharedDeployment>newList());
assert list != null;
list.add(newDep);
}
return F.t(true, newDep);
}
/** @return Registered class loader IDs. */
Collection<GridUuid> getClassLoaderIds() {
assert Thread.holdsLock(mux);
return loader().registeredClassLoaderIds();
}
/** @return {@code True} if deployment has any node participants. */
boolean hasParticipants() {
assert Thread.holdsLock(mux);
return loader().hasRegisteredNodes();
}
/**
* Future adapter.
*
* @author 2005-2011 Copyright (C) GridGain Systems, Inc.
* @version 3.1.1c.19062011
*/
public class GridFutureAdapter<R> extends GridMetadataAwareAdapter
implements GridFuture<R>, Externalizable {
/** Synchronous notification flag. */
private static final boolean SYNC_NOTIFY = U.isFutureNotificationSynchronous();
/** Concurrent notification flag. */
private static final boolean CONCUR_NOTIFY = U.isFutureNotificationConcurrent();
/** Done flag. */
private boolean done;
/** Cancelled flag. */
private boolean cancelled;
/** Result. */
@GridToStringInclude private R res;
/** Error. */
private Throwable err;
/** Set to {@code false} on deserialization whenever incomplete future is serialized. */
private boolean valid = true;
/** Asynchronous listener. */
private final Set<GridInClosure<? super GridFuture<R>>> lsnrs =
new GridLeanSet<GridInClosure<? super GridFuture<R>>>();
/** Creator thread. */
private Thread thread = Thread.currentThread();
/** Mutex. */
private final Object mux = new Object();
/** Context. */
protected GridKernalContext ctx;
/** Logger. */
protected GridLogger log;
/** Future start time. */
protected final long startTime = System.currentTimeMillis();
/** Synchronous notification flag. */
private volatile boolean syncNotify = SYNC_NOTIFY;
/** Concurrent notification flag. */
private volatile boolean concurNotify = CONCUR_NOTIFY;
/** Future end time. */
private volatile long endTime;
/** Watch. */
protected GridStopwatch watch;
/** Empty constructor required for {@link Externalizable}. */
public GridFutureAdapter() {
// No-op.
}
/** @param ctx Kernal context. */
public GridFutureAdapter(GridKernalContext ctx) {
assert ctx != null;
this.ctx = ctx;
log = ctx.log(getClass());
}
/** {@inheritDoc} */
@Override
public long startTime() {
return startTime;
}
/** {@inheritDoc} */
@Override
public long duration() {
long endTime = this.endTime;
return endTime == 0 ? System.currentTimeMillis() - startTime : endTime - startTime;
}
/** {@inheritDoc} */
@Override
public boolean concurrentNotify() {
return concurNotify;
}
/** {@inheritDoc} */
@Override
public void concurrentNotify(boolean concurNotify) {
this.concurNotify = concurNotify;
}
/** {@inheritDoc} */
@Override
public boolean syncNotify() {
return syncNotify;
}
/** {@inheritDoc} */
@Override
public void syncNotify(boolean syncNotify) {
this.syncNotify = syncNotify;
}
/**
* Adds a watch to this future.
*
* @param name Name of the watch.
*/
public void addWatch(String name) {
assert name != null;
watch = W.stopwatch(name);
}
/**
* Adds a watch to this future.
*
* @param watch Watch to add.
*/
public void addWatch(GridStopwatch watch) {
assert watch != null;
this.watch = watch;
}
/** Checks that future is in usable state. */
protected void checkValid() {
if (!valid)
throw new IllegalStateException(
"Incomplete future was serialized and cannot " + "be used after deserialization.");
}
/** @return Valid flag. */
protected boolean isValid() {
return valid;
}
/**
* Gets internal mutex.
*
* @return Internal mutex.
*/
protected Object mutex() {
checkValid();
return mux;
}
/** @return Value of error. */
protected Throwable error() {
checkValid();
synchronized (mux) {
return err;
}
}
/** @return Value of result. */
protected R result() {
checkValid();
synchronized (mux) {
return res;
}
}
/** {@inheritDoc} */
@Override
public R call() throws Exception {
return get();
}
/** {@inheritDoc} */
@Override
public R get(long timeout) throws GridException {
return get(timeout, MILLISECONDS);
}
/** {@inheritDoc} */
@Override
public R get() throws GridException {
checkValid();
try {
synchronized (mux) {
while (!done && !cancelled) mux.wait();
if (done) {
if (err != null) throw U.cast(err);
return res;
}
throw new GridFutureCancelledException("Future was cancelled: " + this);
}
} catch (InterruptedException e) {
throw new GridInterruptedException(e);
}
}
/** {@inheritDoc} */
@Override
public R get(long timeout, TimeUnit unit) throws GridException {
A.ensure(timeout >= 0, "timeout cannot be negative: " + timeout);
A.notNull(unit, "unit");
checkValid();
try {
long now = System.currentTimeMillis();
long end = timeout == 0 ? Long.MAX_VALUE : now + MILLISECONDS.convert(timeout, unit);
// Account for overflow.
if (end < 0) end = Long.MAX_VALUE;
synchronized (mux) {
while (!done && !cancelled && now < end) {
mux.wait(end - now);
if (!done) now = System.currentTimeMillis();
}
if (done) {
if (err != null) throw U.cast(err);
return res;
}
if (cancelled) throw new GridFutureCancelledException("Future was cancelled: " + this);
throw new GridFutureTimeoutException(
"Timeout was reached before computation completed [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]");
}
} catch (InterruptedException e) {
throw new GridInterruptedException(
"Got interrupted while waiting for future to complete [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]",
e);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public void listenAsync(@Nullable final GridInClosure<? super GridFuture<R>> lsnr) {
if (lsnr != null) {
checkValid();
boolean done;
synchronized (mux) {
done = this.done;
if (!done) lsnrs.add(lsnr);
}
if (done) {
try {
if (syncNotify) notifyListener(lsnr);
else
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
notifyListener(lsnr);
}
},
true);
} catch (IllegalStateException ignore) {
U.warn(
null,
"Future notification will not proceed because grid is stopped: " + ctx.gridName());
}
}
}
}
/** {@inheritDoc} */
@Override
public void stopListenAsync(@Nullable GridInClosure<? super GridFuture<R>>... lsnr) {
if (F.isEmpty(lsnr))
synchronized (mux) {
lsnrs.clear();
}
else
synchronized (mux) {
lsnrs.removeAll(F.asList(lsnr));
}
}
/** Notifies all registered listeners. */
private void notifyListeners() {
final Collection<GridInClosure<? super GridFuture<R>>> tmp;
synchronized (mux) {
tmp = new ArrayList<GridInClosure<? super GridFuture<R>>>(lsnrs);
}
boolean concurNotify = this.concurNotify;
boolean syncNotify = this.syncNotify;
if (concurNotify) {
for (final GridInClosure<? super GridFuture<R>> lsnr : tmp)
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
notifyListener(lsnr);
}
},
true);
} else {
// Always notify in the thread different from start thread.
if (Thread.currentThread() == thread && !syncNotify) {
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
// Since concurrent notifications are off, we notify
// all listeners in one thread.
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
},
true);
} else {
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
}
}
/**
* Notifies single listener.
*
* @param lsnr Listener.
*/
private void notifyListener(GridInClosure<? super GridFuture<R>> lsnr) {
assert lsnr != null;
try {
lsnr.apply(this);
} catch (IllegalStateException ignore) {
U.warn(
null,
"Failed to notify listener (grid is stopped) [grid="
+ ctx.gridName()
+ ", lsnr="
+ lsnr
+ ']');
} catch (RuntimeException e) {
U.error(log, "Failed to notify listener: " + lsnr, e);
throw e;
} catch (Error e) {
U.error(log, "Failed to notify listener: " + lsnr, e);
throw e;
}
}
/**
* Default no-op implementation that always returns {@code false}. Futures that do support
* cancellation should override this method and call {@link #onCancelled()} callback explicitly if
* cancellation indeed did happen.
*/
@Override
public boolean cancel() throws GridException {
checkValid();
return false;
}
/** {@inheritDoc} */
@Override
public boolean isDone() {
// Don't check for "valid" here, as "done" flag can be read
// even in invalid state.
synchronized (mux) {
return done || cancelled;
}
}
/** {@inheritDoc} */
@Override
public GridAbsPredicate predicate() {
return new PA() {
@Override
public boolean apply() {
return isDone();
}
};
}
/** {@inheritDoc} */
@Override
public boolean isCancelled() {
checkValid();
synchronized (mux) {
return cancelled;
}
}
/**
* Callback to notify that future is finished with {@code null} result. This method must delegate
* to {@link #onDone(Object, Throwable)} method.
*
* @return {@code True} if result was set by this call.
*/
public final boolean onDone() {
return onDone(null, null);
}
/**
* Callback to notify that future is finished. This method must delegate to {@link #onDone(Object,
* Throwable)} method.
*
* @param res Result.
* @return {@code True} if result was set by this call.
*/
public final boolean onDone(@Nullable R res) {
return onDone(res, null);
}
/**
* Callback to notify that future is finished. This method must delegate to {@link #onDone(Object,
* Throwable)} method.
*
* @param err Error.
* @return {@code True} if result was set by this call.
*/
public final boolean onDone(@Nullable Throwable err) {
return onDone(null, err);
}
/**
* Callback to notify that future is finished. Note that if non-{@code null} exception is passed
* in the result value will be ignored.
*
* @param res Optional result.
* @param err Optional error.
* @return {@code True} if result was set by this call.
*/
public boolean onDone(@Nullable R res, @Nullable Throwable err) {
checkValid();
boolean notify = false;
boolean gotDone = false;
try {
synchronized (mux) {
if (!done) {
gotDone = true;
endTime = System.currentTimeMillis();
this.res = res;
this.err = err;
done = true;
notify = true;
mux.notifyAll(); // Notify possibly waiting child classes.
return true;
}
return false;
}
} finally {
if (gotDone) {
GridStopwatch w = watch;
if (w != null) w.stop();
}
if (notify) notifyListeners();
}
}
/**
* Callback to notify that future is cancelled.
*
* @return {@code True} if cancel flag was set by this call.
*/
public boolean onCancelled() {
checkValid();
synchronized (mux) {
if (cancelled || done) return false;
cancelled = true;
mux.notifyAll(); // Notify possibly waiting child classes.
}
return true;
}
/** {@inheritDoc} */
@Override
public void writeExternal(ObjectOutput out) throws IOException {
boolean done;
boolean cancelled;
Object res;
Throwable err;
boolean syncNotify;
boolean concurNotify;
synchronized (mux) {
done = this.done;
cancelled = this.cancelled;
res = this.res;
err = this.err;
syncNotify = this.syncNotify;
concurNotify = this.concurNotify;
}
out.writeBoolean(done);
out.writeBoolean(syncNotify);
out.writeBoolean(concurNotify);
// Don't write any further if not done, as deserialized future
// will be invalid anyways.
if (done) {
out.writeBoolean(cancelled);
out.writeObject(res);
out.writeObject(err);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
boolean done = in.readBoolean();
syncNotify = in.readBoolean();
concurNotify = in.readBoolean();
if (!done) valid = false;
else {
boolean cancelled = in.readBoolean();
R res = (R) in.readObject();
Throwable err = (Throwable) in.readObject();
synchronized (mux) {
this.done = done;
this.cancelled = cancelled;
this.res = res;
this.err = err;
}
}
}
/** {@inheritDoc} */
@Override
public String toString() {
return S.toString(GridFutureAdapter.class, this);
}
}
/**
* Gets property removed.
*
* @return Property removed.
*/
boolean isRemoved() {
assert Thread.holdsLock(mux);
return removed;
}