/**
* @param ctx Kernal context.
* @param cfg Ignite configuration.
* @param providers Plugin providers.
*/
@SuppressWarnings("TypeMayBeWeakened")
public IgnitePluginProcessor(
GridKernalContext ctx, IgniteConfiguration cfg, List<PluginProvider> providers) {
super(ctx);
ExtensionRegistryImpl registry = new ExtensionRegistryImpl();
for (PluginProvider provider : providers) {
GridPluginContext pluginCtx = new GridPluginContext(ctx, cfg);
if (F.isEmpty(provider.name())) throw new IgniteException("Plugin name can not be empty.");
if (plugins.containsKey(provider.name()))
throw new IgniteException("Duplicated plugin name: " + provider.name());
plugins.put(provider.name(), provider);
pluginCtxMap.put(provider, pluginCtx);
provider.initExtensions(pluginCtx, registry);
if (provider.plugin() == null) throw new IgniteException("Plugin is null.");
}
extensions = registry.createExtensionMap();
}
/**
* {@inheritDoc}
*
* @param ctx
*/
@Override
public void prepareMarshal(GridCacheSharedContext ctx) throws IgniteCheckedException {
super.prepareMarshal(ctx);
if (ownedVals != null) {
ownedValKeys = ownedVals.keySet();
ownedValVals = ownedVals.values();
for (Map.Entry<IgniteTxKey, CacheVersionedValue> entry : ownedVals.entrySet()) {
GridCacheContext cacheCtx = ctx.cacheContext(entry.getKey().cacheId());
entry.getKey().prepareMarshal(cacheCtx);
entry.getValue().prepareMarshal(cacheCtx.cacheObjectContext());
}
}
if (retVal != null && retVal.cacheId() != 0) {
GridCacheContext cctx = ctx.cacheContext(retVal.cacheId());
assert cctx != null : retVal.cacheId();
retVal.prepareMarshal(cctx);
}
if (filterFailedKeys != null) {
for (IgniteTxKey key : filterFailedKeys) {
GridCacheContext cctx = ctx.cacheContext(key.cacheId());
key.prepareMarshal(cctx);
}
}
}
/** Cleans up resources to avoid excessive memory usage. */
public void cleanUp() {
topSnapshot.set(null);
singleMsgs.clear();
fullMsgs.clear();
rcvdIds.clear();
oldestNode.set(null);
partReleaseFut = null;
Collection<ClusterNode> rmtNodes = this.rmtNodes;
if (rmtNodes != null) rmtNodes.clear();
}
/** {@inheritDoc} */
@Override
public void onDiscoveryDataReceived(UUID nodeId, UUID rmtNodeId, Serializable data) {
Map<String, Serializable> discData = (Map<String, Serializable>) data;
if (discData != null) {
for (Map.Entry<String, Serializable> e : discData.entrySet()) {
PluginProvider provider = plugins.get(e.getKey());
if (provider != null) provider.receiveDiscoveryData(nodeId, e.getValue());
else U.warn(log, "Received discovery data for unknown plugin: " + e.getKey());
}
}
}
/** Print plugins information. */
private void ackPluginsInfo() {
U.quietAndInfo(log, "Configured plugins:");
if (plugins.isEmpty()) {
U.quietAndInfo(log, " ^-- None");
U.quietAndInfo(log, "");
} else {
for (PluginProvider plugin : plugins.values()) {
U.quietAndInfo(log, " ^-- " + plugin.name() + " " + plugin.version());
U.quietAndInfo(log, " ^-- " + plugin.copyright());
U.quietAndInfo(log, "");
}
}
}
/** {@inheritDoc} */
@Override
public void finishUnmarshal(GridCacheSharedContext ctx, ClassLoader ldr)
throws IgniteCheckedException {
super.finishUnmarshal(ctx, ldr);
if (writes != null) unmarshalTx(writes, false, ctx, ldr);
if (reads != null) unmarshalTx(reads, false, ctx, ldr);
if (grpLockKeyBytes != null && grpLockKey == null)
grpLockKey = ctx.marshaller().unmarshal(grpLockKeyBytes, ldr);
if (dhtVerKeys != null && dhtVers == null) {
assert dhtVerVals != null;
assert dhtVerKeys.size() == dhtVerVals.size();
Iterator<IgniteTxKey> keyIt = dhtVerKeys.iterator();
Iterator<GridCacheVersion> verIt = dhtVerVals.iterator();
dhtVers = U.newHashMap(dhtVerKeys.size());
while (keyIt.hasNext()) {
IgniteTxKey key = keyIt.next();
key.finishUnmarshal(ctx.cacheContext(key.cacheId()), ldr);
dhtVers.put(key, verIt.next());
}
}
if (txNodesBytes != null) txNodes = ctx.marshaller().unmarshal(txNodesBytes, ldr);
}
/** {@inheritDoc} */
@Override
public boolean onDone(AffinityTopologyVersion res, Throwable err) {
Map<Integer, Boolean> m = null;
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.config().getTopologyValidator() != null && !CU.isSystemCache(cacheCtx.name())) {
if (m == null) m = new HashMap<>();
m.put(
cacheCtx.cacheId(),
cacheCtx.config().getTopologyValidator().validate(discoEvt.topologyNodes()));
}
}
cacheValidRes = m != null ? m : Collections.<Integer, Boolean>emptyMap();
cctx.cache().onExchangeDone(exchId.topologyVersion(), reqs, err);
cctx.exchange().onExchangeDone(this, err);
if (super.onDone(res, err) && !dummy && !forcePreload) {
if (log.isDebugEnabled())
log.debug(
"Completed partition exchange [localNode="
+ cctx.localNodeId()
+ ", exchange= "
+ this
+ ']');
initFut.onDone(err == null);
GridTimeoutObject timeoutObj = this.timeoutObj;
// Deschedule timeout object.
if (timeoutObj != null) cctx.kernalContext().timeout().removeTimeoutObject(timeoutObj);
if (exchId.isLeft()) {
for (GridCacheContext cacheCtx : cctx.cacheContexts())
cacheCtx.config().getAffinity().removeNode(exchId.nodeId());
}
return true;
}
return dummy;
}
/**
* Adds owned value.
*
* @param key Key.
* @param ver DHT version.
* @param val Value.
*/
public void addOwnedValue(IgniteTxKey key, GridCacheVersion ver, CacheObject val) {
if (val == null) return;
if (ownedVals == null) ownedVals = new HashMap<>();
CacheVersionedValue oVal = new CacheVersionedValue(val, ver);
ownedVals.put(key, oVal);
}
/**
* Cache preloader should call this method within partition lock.
*
* @param key Key.
* @param ver Version.
* @return {@code True} if preloading is permitted.
*/
public boolean preloadingPermitted(KeyCacheObject key, GridCacheVersion ver) {
assert key != null;
assert ver != null;
assert lock.isHeldByCurrentThread(); // Only one thread can enter this method at a time.
if (state() != MOVING) return false;
Map<KeyCacheObject, GridCacheVersion> evictHist0 = evictHist;
if (evictHist0 != null) {
GridCacheVersion ver0 = evictHist0.get(key);
// Permit preloading if version in history
// is missing or less than passed in.
return ver0 == null || ver0.isLess(ver);
}
return false;
}
/**
* @param key Key.
* @param ver Version.
*/
public void onEntryEvicted(KeyCacheObject key, GridCacheVersion ver) {
assert key != null;
assert ver != null;
assert lock.isHeldByCurrentThread(); // Only one thread can enter this method at a time.
if (state() != MOVING) return;
Map<KeyCacheObject, GridCacheVersion> evictHist0 = evictHist;
if (evictHist0 != null) {
GridCacheVersion ver0 = evictHist0.get(key);
if (ver0 == null || ver0.isLess(ver)) {
GridCacheVersion ver1 = evictHist0.put(key, ver);
assert ver1 == ver0;
}
}
}
/**
* @param cls Component class.
* @param <T> Component type.
* @return Component class instance or {@code null} if no one plugin override this component.
*/
public <T> T createComponent(Class<T> cls) {
for (PluginProvider plugin : plugins.values()) {
PluginContext ctx = pluginContextForProvider(plugin);
T comp = (T) plugin.createComponent(ctx, cls);
if (comp != null) return comp;
}
return null;
}
/**
* {@inheritDoc}
*
* @param ctx
*/
@Override
public void prepareMarshal(GridCacheSharedContext ctx) throws IgniteCheckedException {
super.prepareMarshal(ctx);
if (writes != null) marshalTx(writes, ctx);
if (reads != null) marshalTx(reads, ctx);
if (grpLockKey != null && grpLockKeyBytes == null)
grpLockKeyBytes = ctx.marshaller().marshal(grpLockKey);
if (dhtVers != null) {
for (IgniteTxKey key : dhtVers.keySet()) {
GridCacheContext cctx = ctx.cacheContext(key.cacheId());
key.prepareMarshal(cctx);
}
dhtVerKeys = dhtVers.keySet();
dhtVerVals = dhtVers.values();
}
if (txNodes != null) txNodesBytes = ctx.marshaller().marshal(txNodes);
}
/** {@inheritDoc} */
@Nullable
@Override
public Serializable collectDiscoveryData(UUID nodeId) {
HashMap<String, Serializable> discData = null;
for (Map.Entry<String, PluginProvider> e : plugins.entrySet()) {
Serializable data = e.getValue().provideDiscoveryData(nodeId);
if (data != null) {
if (discData == null) discData = new HashMap<>();
discData.put(e.getKey(), data);
}
}
return discData;
}
/** {@inheritDoc} */
@Override
public void finishUnmarshal(GridCacheSharedContext ctx, ClassLoader ldr)
throws IgniteCheckedException {
super.finishUnmarshal(ctx, ldr);
if (ownedValKeys != null && ownedVals == null) {
ownedVals = U.newHashMap(ownedValKeys.size());
assert ownedValKeys.size() == ownedValVals.size();
Iterator<IgniteTxKey> keyIter = ownedValKeys.iterator();
Iterator<CacheVersionedValue> valIter = ownedValVals.iterator();
while (keyIter.hasNext()) {
IgniteTxKey key = keyIter.next();
GridCacheContext cctx = ctx.cacheContext(key.cacheId());
CacheVersionedValue val = valIter.next();
key.finishUnmarshal(cctx, ldr);
val.finishUnmarshal(cctx, ldr);
ownedVals.put(key, val);
}
}
if (retVal != null && retVal.cacheId() != 0) {
GridCacheContext cctx = ctx.cacheContext(retVal.cacheId());
assert cctx != null : retVal.cacheId();
retVal.finishUnmarshal(cctx, ldr);
}
if (filterFailedKeys != null) {
for (IgniteTxKey key : filterFailedKeys) {
GridCacheContext cctx = ctx.cacheContext(key.cacheId());
key.finishUnmarshal(cctx, ldr);
}
}
}
/**
* Sets configuration properties from the map.
*
* @param endpointCfg Map of properties.
* @throws IgniteCheckedException If invalid property name or value.
*/
public void setupConfiguration(Map<String, String> endpointCfg) throws IgniteCheckedException {
for (Map.Entry<String, String> e : endpointCfg.entrySet()) {
try {
switch (e.getKey()) {
case "type":
case "host":
case "management":
// Ignore these properties
break;
case "port":
setPort(Integer.parseInt(e.getValue()));
break;
case "size":
setSize(Integer.parseInt(e.getValue()));
break;
case "tokenDirectoryPath":
setTokenDirectoryPath(e.getValue());
break;
default:
throw new IgniteCheckedException(
"Invalid property '" + e.getKey() + "' of " + getClass().getSimpleName());
}
} catch (Throwable t) {
if (t instanceof IgniteCheckedException || t instanceof Error) throw t;
throw new IgniteCheckedException(
"Invalid value '"
+ e.getValue()
+ "' of the property '"
+ e.getKey()
+ "' in "
+ getClass().getSimpleName(),
t);
}
}
}
/**
* Starts activity.
*
* @throws IgniteInterruptedCheckedException If interrupted.
*/
public void init() throws IgniteInterruptedCheckedException {
if (isDone()) return;
if (init.compareAndSet(false, true)) {
if (isDone()) return;
try {
// Wait for event to occur to make sure that discovery
// will return corresponding nodes.
U.await(evtLatch);
assert discoEvt != null : this;
assert !dummy && !forcePreload : this;
ClusterNode oldest = CU.oldestAliveCacheServerNode(cctx, exchId.topologyVersion());
oldestNode.set(oldest);
startCaches();
// True if client node joined or failed.
boolean clientNodeEvt;
if (F.isEmpty(reqs)) {
int type = discoEvt.type();
assert type == EVT_NODE_JOINED || type == EVT_NODE_LEFT || type == EVT_NODE_FAILED
: discoEvt;
clientNodeEvt = CU.clientNode(discoEvt.eventNode());
} else {
assert discoEvt.type() == EVT_DISCOVERY_CUSTOM_EVT : discoEvt;
boolean clientOnlyStart = true;
for (DynamicCacheChangeRequest req : reqs) {
if (!req.clientStartOnly()) {
clientOnlyStart = false;
break;
}
}
clientNodeEvt = clientOnlyStart;
}
if (clientNodeEvt) {
ClusterNode node = discoEvt.eventNode();
// Client need to initialize affinity for local join event or for stated client caches.
if (!node.isLocal()) {
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.isLocal()) continue;
GridDhtPartitionTopology top = cacheCtx.topology();
top.updateTopologyVersion(exchId, this, -1, stopping(cacheCtx.cacheId()));
if (cacheCtx.affinity().affinityTopologyVersion() == AffinityTopologyVersion.NONE) {
initTopology(cacheCtx);
top.beforeExchange(this);
} else
cacheCtx.affinity().clientEventTopologyChange(discoEvt, exchId.topologyVersion());
}
if (exchId.isLeft())
cctx.mvcc().removeExplicitNodeLocks(exchId.nodeId(), exchId.topologyVersion());
onDone(exchId.topologyVersion());
skipPreload = cctx.kernalContext().clientNode();
return;
}
}
if (cctx.kernalContext().clientNode()) {
skipPreload = true;
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.isLocal()) continue;
GridDhtPartitionTopology top = cacheCtx.topology();
top.updateTopologyVersion(exchId, this, -1, stopping(cacheCtx.cacheId()));
}
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.isLocal()) continue;
initTopology(cacheCtx);
}
if (oldestNode.get() != null) {
rmtNodes =
new ConcurrentLinkedQueue<>(
CU.aliveRemoteServerNodesWithCaches(cctx, exchId.topologyVersion()));
rmtIds = Collections.unmodifiableSet(new HashSet<>(F.nodeIds(rmtNodes)));
ready.set(true);
initFut.onDone(true);
if (log.isDebugEnabled()) log.debug("Initialized future: " + this);
sendPartitions();
} else onDone(exchId.topologyVersion());
return;
}
assert oldestNode.get() != null;
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (isCacheAdded(cacheCtx.cacheId(), exchId.topologyVersion())) {
if (cacheCtx
.discovery()
.cacheAffinityNodes(cacheCtx.name(), topologyVersion())
.isEmpty())
U.quietAndWarn(log, "No server nodes found for cache client: " + cacheCtx.namex());
}
cacheCtx.preloader().onExchangeFutureAdded();
}
List<String> cachesWithoutNodes = null;
if (exchId.isLeft()) {
for (String name : cctx.cache().cacheNames()) {
if (cctx.discovery().cacheAffinityNodes(name, topologyVersion()).isEmpty()) {
if (cachesWithoutNodes == null) cachesWithoutNodes = new ArrayList<>();
cachesWithoutNodes.add(name);
// Fire event even if there is no client cache started.
if (cctx.gridEvents().isRecordable(EventType.EVT_CACHE_NODES_LEFT)) {
Event evt =
new CacheEvent(
name,
cctx.localNode(),
cctx.localNode(),
"All server nodes have left the cluster.",
EventType.EVT_CACHE_NODES_LEFT,
0,
false,
null,
null,
null,
null,
false,
null,
false,
null,
null,
null);
cctx.gridEvents().record(evt);
}
}
}
}
if (cachesWithoutNodes != null) {
StringBuilder sb =
new StringBuilder(
"All server nodes for the following caches have left the cluster: ");
for (int i = 0; i < cachesWithoutNodes.size(); i++) {
String cache = cachesWithoutNodes.get(i);
sb.append('\'').append(cache).append('\'');
if (i != cachesWithoutNodes.size() - 1) sb.append(", ");
}
U.quietAndWarn(log, sb.toString());
U.quietAndWarn(log, "Must have server nodes for caches to operate.");
}
assert discoEvt != null;
assert exchId.nodeId().equals(discoEvt.eventNode().id());
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
GridClientPartitionTopology clientTop =
cctx.exchange().clearClientTopology(cacheCtx.cacheId());
long updSeq = clientTop == null ? -1 : clientTop.lastUpdateSequence();
// Update before waiting for locks.
if (!cacheCtx.isLocal())
cacheCtx
.topology()
.updateTopologyVersion(exchId, this, updSeq, stopping(cacheCtx.cacheId()));
}
// Grab all alive remote nodes with order of equal or less than last joined node.
rmtNodes =
new ConcurrentLinkedQueue<>(
CU.aliveRemoteServerNodesWithCaches(cctx, exchId.topologyVersion()));
rmtIds = Collections.unmodifiableSet(new HashSet<>(F.nodeIds(rmtNodes)));
for (Map.Entry<UUID, GridDhtPartitionsSingleMessage> m : singleMsgs.entrySet())
// If received any messages, process them.
onReceive(m.getKey(), m.getValue());
for (Map.Entry<UUID, GridDhtPartitionsFullMessage> m : fullMsgs.entrySet())
// If received any messages, process them.
onReceive(m.getKey(), m.getValue());
AffinityTopologyVersion topVer = exchId.topologyVersion();
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.isLocal()) continue;
// Must initialize topology after we get discovery event.
initTopology(cacheCtx);
cacheCtx.preloader().updateLastExchangeFuture(this);
}
IgniteInternalFuture<?> partReleaseFut = cctx.partitionReleaseFuture(topVer);
// Assign to class variable so it will be included into toString() method.
this.partReleaseFut = partReleaseFut;
if (log.isDebugEnabled()) log.debug("Before waiting for partition release future: " + this);
while (true) {
try {
partReleaseFut.get(2 * cctx.gridConfig().getNetworkTimeout(), TimeUnit.MILLISECONDS);
break;
} catch (IgniteFutureTimeoutCheckedException ignored) {
// Print pending transactions and locks that might have led to hang.
dumpPendingObjects();
}
}
if (log.isDebugEnabled()) log.debug("After waiting for partition release future: " + this);
if (!F.isEmpty(reqs)) blockGateways();
if (exchId.isLeft())
cctx.mvcc().removeExplicitNodeLocks(exchId.nodeId(), exchId.topologyVersion());
IgniteInternalFuture<?> locksFut = cctx.mvcc().finishLocks(exchId.topologyVersion());
while (true) {
try {
locksFut.get(2 * cctx.gridConfig().getNetworkTimeout(), TimeUnit.MILLISECONDS);
break;
} catch (IgniteFutureTimeoutCheckedException ignored) {
U.warn(
log,
"Failed to wait for locks release future. "
+ "Dumping pending objects that might be the cause: "
+ cctx.localNodeId());
U.warn(log, "Locked entries:");
Map<IgniteTxKey, Collection<GridCacheMvccCandidate>> locks =
cctx.mvcc().unfinishedLocks(exchId.topologyVersion());
for (Map.Entry<IgniteTxKey, Collection<GridCacheMvccCandidate>> e : locks.entrySet())
U.warn(log, "Locked entry [key=" + e.getKey() + ", mvcc=" + e.getValue() + ']');
}
}
for (GridCacheContext cacheCtx : cctx.cacheContexts()) {
if (cacheCtx.isLocal()) continue;
// Notify replication manager.
GridCacheContext drCacheCtx =
cacheCtx.isNear() ? cacheCtx.near().dht().context() : cacheCtx;
if (drCacheCtx.isDrEnabled()) drCacheCtx.dr().beforeExchange(topVer, exchId.isLeft());
// Partition release future is done so we can flush the write-behind store.
cacheCtx.store().forceFlush();
// Process queued undeploys prior to sending/spreading map.
cacheCtx.preloader().unwindUndeploys();
GridDhtPartitionTopology top = cacheCtx.topology();
assert topVer.equals(top.topologyVersion())
: "Topology version is updated only in this class instances inside single ExchangeWorker thread.";
top.beforeExchange(this);
}
for (GridClientPartitionTopology top : cctx.exchange().clientTopologies()) {
top.updateTopologyVersion(exchId, this, -1, stopping(top.cacheId()));
top.beforeExchange(this);
}
} catch (IgniteInterruptedCheckedException e) {
onDone(e);
throw e;
} catch (Throwable e) {
U.error(
log,
"Failed to reinitialize local partitions (preloading will be stopped): " + exchId,
e);
onDone(e);
if (e instanceof Error) throw (Error) e;
return;
}
if (F.isEmpty(rmtIds)) {
onDone(exchId.topologyVersion());
return;
}
ready.set(true);
initFut.onDone(true);
if (log.isDebugEnabled()) log.debug("Initialized future: " + this);
// If this node is not oldest.
if (!oldestNode.get().id().equals(cctx.localNodeId())) sendPartitions();
else {
boolean allReceived = allReceived();
if (allReceived && replied.compareAndSet(false, true)) {
if (spreadPartitions()) onDone(exchId.topologyVersion());
}
}
scheduleRecheck();
} else assert false : "Skipped init future: " + this;
}
/** {@inheritDoc} */
@Override
public boolean isCacheTopologyValid(GridCacheContext cctx) {
return cctx.config().getTopologyValidator() != null && cacheValidRes.containsKey(cctx.cacheId())
? cacheValidRes.get(cctx.cacheId())
: true;
}
/**
* Remove particular entry from the trash directory or subdirectory.
*
* @param parentId Parent ID.
* @param id Entry id.
* @throws IgniteCheckedException If delete failed for some reason.
*/
private void deleteDirectory(IgniteUuid parentId, IgniteUuid id) throws IgniteCheckedException {
assert parentId != null;
assert id != null;
while (true) {
IgfsFileInfo info = meta.info(id);
if (info != null) {
assert info.isDirectory();
Map<String, IgfsListingEntry> listing = info.listing();
if (listing.isEmpty()) return; // Directory is empty.
Map<String, IgfsListingEntry> delListing;
if (listing.size() <= MAX_DELETE_BATCH) delListing = listing;
else {
delListing = new HashMap<>(MAX_DELETE_BATCH, 1.0f);
int i = 0;
for (Map.Entry<String, IgfsListingEntry> entry : listing.entrySet()) {
delListing.put(entry.getKey(), entry.getValue());
if (++i == MAX_DELETE_BATCH) break;
}
}
GridCompoundFuture<Object, ?> fut = new GridCompoundFuture<>();
// Delegate to child folders.
for (IgfsListingEntry entry : delListing.values()) {
if (!cancelled) {
if (entry.isDirectory()) deleteDirectory(id, entry.fileId());
else {
IgfsFileInfo fileInfo = meta.info(entry.fileId());
if (fileInfo != null) {
assert fileInfo.isFile();
fut.add(data.delete(fileInfo));
}
}
} else return;
}
fut.markInitialized();
// Wait for data cache to delete values before clearing meta cache.
try {
fut.get();
} catch (IgniteFutureCancelledCheckedException ignore) {
// This future can be cancelled only due to IGFS shutdown.
cancelled = true;
return;
}
// Actual delete of folder content.
Collection<IgniteUuid> delIds = meta.delete(id, delListing);
if (delListing == listing && delListing.size() == delIds.size())
break; // All entries were deleted.
} else break; // Entry was deleted concurrently.
}
}
/** @return All plugin providers. */
public Collection<PluginProvider> allProviders() {
return plugins.values();
}
/**
* @param name Plugin name.
* @return Plugin provider.
*/
@SuppressWarnings("unchecked")
@Nullable
public <T extends PluginProvider> T pluginProvider(String name) {
return (T) plugins.get(name);
}
/**
* @param key Key.
* @return {@code True} if response has owned value for given key.
*/
public boolean hasOwnedValue(IgniteTxKey key) {
return ownedVals != null && ownedVals.containsKey(key);
}
/**
* Adds version to be verified on remote node.
*
* @param key Key for which version is verified.
* @param dhtVer DHT version to check.
*/
public void addDhtVersion(IgniteTxKey key, @Nullable GridCacheVersion dhtVer) {
if (dhtVers == null) dhtVers = new HashMap<>();
dhtVers.put(key, dhtVer);
}
/**
* @param provider Plugin context.
* @return Plugin context.
*/
@SuppressWarnings("unchecked")
public <T extends PluginContext> T pluginContextForProvider(PluginProvider provider) {
return (T) pluginCtxMap.get(provider);
}