/** Data loader implementation. */
public class GridDataLoaderImpl<K, V> implements GridDataLoader<K, V>, Delayed {
/** Cache updater. */
private GridDataLoadCacheUpdater<K, V> updater = GridDataLoadCacheUpdaters.individual();
/** */
private byte[] updaterBytes;
/** Max remap count before issuing an error. */
private static final int MAX_REMAP_CNT = 32;
/** Log reference. */
private static final AtomicReference<GridLogger> logRef = new AtomicReference<>();
/** Cache name ({@code null} for default cache). */
private final String cacheName;
/** Per-node buffer size. */
@SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
private int bufSize = DFLT_PER_NODE_BUFFER_SIZE;
/** */
private int parallelOps = DFLT_MAX_PARALLEL_OPS;
/** */
private long autoFlushFreq;
/** Mapping. */
@GridToStringInclude private ConcurrentMap<UUID, Buffer> bufMappings = new ConcurrentHashMap8<>();
/** Logger. */
private GridLogger log;
/** Discovery listener. */
private final GridLocalEventListener discoLsnr;
/** Context. */
private final GridKernalContext ctx;
/** Communication topic for responses. */
private final Object topic;
/** */
private byte[] topicBytes;
/** {@code True} if data loader has been cancelled. */
private volatile boolean cancelled;
/** Active futures of this data loader. */
@GridToStringInclude
private final Collection<GridFuture<?>> activeFuts = new GridConcurrentHashSet<>();
/** Closure to remove from active futures. */
@GridToStringExclude
private final GridInClosure<GridFuture<?>> rmvActiveFut =
new GridInClosure<GridFuture<?>>() {
@Override
public void apply(GridFuture<?> t) {
boolean rmv = activeFuts.remove(t);
assert rmv;
}
};
/** Job peer deploy aware. */
private volatile GridPeerDeployAware jobPda;
/** Deployment class. */
private Class<?> depCls;
/** Future to track loading finish. */
private final GridFutureAdapter<?> fut;
/** Busy lock. */
private final GridSpinBusyLock busyLock = new GridSpinBusyLock();
/** Closed flag. */
private final AtomicBoolean closed = new AtomicBoolean();
/** */
private volatile long lastFlushTime = U.currentTimeMillis();
/** */
private final DelayQueue<GridDataLoaderImpl<K, V>> flushQ;
/**
* @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);
}
/** Enters busy lock. */
private void enterBusy() {
if (!busyLock.enterBusy()) throw new IllegalStateException("Data loader has been closed.");
}
/** Leaves busy lock. */
private void leaveBusy() {
busyLock.leaveBusy();
}
/** {@inheritDoc} */
@Override
public GridFuture<?> future() {
return fut;
}
/** {@inheritDoc} */
@Override
public void deployClass(Class<?> depCls) {
this.depCls = depCls;
}
/** {@inheritDoc} */
@Override
public void updater(GridDataLoadCacheUpdater<K, V> updater) {
A.notNull(updater, "updater");
this.updater = updater;
}
/** {@inheritDoc} */
@Override
public boolean isolated() {
return updater != GridDataLoadCacheUpdaters.individual();
}
/** {@inheritDoc} */
@Override
public void isolated(boolean isolated) throws GridException {
if (isolated()) return;
GridNode node = F.first(ctx.grid().forCache(cacheName).nodes());
if (node == null) throw new GridException("Failed to get node for cache: " + cacheName);
GridCacheAttributes a = U.cacheAttributes(node, cacheName);
assert a != null;
updater =
a.atomicityMode() == GridCacheAtomicityMode.ATOMIC
? GridDataLoadCacheUpdaters.<K, V>batched()
: GridDataLoadCacheUpdaters.<K, V>groupLocked();
}
/** {@inheritDoc} */
@Override
@Nullable
public String cacheName() {
return cacheName;
}
/** {@inheritDoc} */
@Override
public int perNodeBufferSize() {
return bufSize;
}
/** {@inheritDoc} */
@Override
public void perNodeBufferSize(int bufSize) {
A.ensure(bufSize > 0, "bufSize > 0");
this.bufSize = bufSize;
}
/** {@inheritDoc} */
@Override
public int perNodeParallelLoadOperations() {
return parallelOps;
}
/** {@inheritDoc} */
@Override
public void perNodeParallelLoadOperations(int parallelOps) {
this.parallelOps = parallelOps;
}
/** {@inheritDoc} */
@Override
public long autoFlushFrequency() {
return autoFlushFreq;
}
/** {@inheritDoc} */
@Override
public void autoFlushFrequency(long autoFlushFreq) {
A.ensure(autoFlushFreq >= 0, "autoFlushFreq >= 0");
long old = this.autoFlushFreq;
if (autoFlushFreq != old) {
this.autoFlushFreq = autoFlushFreq;
if (autoFlushFreq != 0 && old == 0) flushQ.add(this);
else if (autoFlushFreq == 0) flushQ.remove(this);
}
}
/** {@inheritDoc} */
@Override
public GridFuture<?> addData(Map<K, V> entries) throws IllegalStateException {
A.notNull(entries, "entries");
return addData(entries.entrySet());
}
/** {@inheritDoc} */
@Override
public GridFuture<?> addData(Collection<? extends Map.Entry<K, V>> entries) {
A.notEmpty(entries, "entries");
enterBusy();
try {
GridFutureAdapter<Object> resFut = new GridFutureAdapter<>(ctx);
activeFuts.add(resFut);
resFut.listenAsync(rmvActiveFut);
Collection<K> keys = new GridConcurrentHashSet<>(entries.size(), 1.0f, 16);
for (Map.Entry<K, V> entry : entries) keys.add(entry.getKey());
load0(entries, resFut, keys, 0);
return resFut;
} finally {
leaveBusy();
}
}
/** {@inheritDoc} */
@Override
public GridFuture<?> addData(Map.Entry<K, V> entry) throws GridException, IllegalStateException {
A.notNull(entry, "entry");
return addData(F.asList(entry));
}
/** {@inheritDoc} */
@Override
public GridFuture<?> addData(K key, V val) throws GridException, IllegalStateException {
A.notNull(key, "key");
return addData(new Entry0<>(key, val));
}
/** {@inheritDoc} */
@Override
public GridFuture<?> removeData(K key) throws GridException, IllegalStateException {
return addData(key, null);
}
/**
* @param entries Entries.
* @param resFut Result future.
* @param activeKeys Active keys.
* @param remaps Remaps count.
*/
private void load0(
Collection<? extends Map.Entry<K, V>> entries,
final GridFutureAdapter<Object> resFut,
final Collection<K> activeKeys,
final int remaps) {
assert entries != null;
if (remaps >= MAX_REMAP_CNT) {
resFut.onDone(new GridException("Failed to finish operation (too many remaps): " + remaps));
return;
}
Map<GridNode, Collection<Map.Entry<K, V>>> mappings = new HashMap<>();
boolean initPda = ctx.deploy().enabled() && jobPda == null;
for (Map.Entry<K, V> entry : entries) {
GridNode node;
try {
K key = entry.getKey();
assert key != null;
if (initPda) {
jobPda = new DataLoaderPda(key, entry.getValue(), updater);
initPda = false;
}
node = ctx.affinity().mapKeyToNode(cacheName, key);
} catch (GridException e) {
resFut.onDone(e);
return;
}
if (node == null) {
resFut.onDone(
new GridTopologyException(
"Failed to map key to node "
+ "(no nodes with cache found in topology) [infos="
+ entries.size()
+ ", cacheName="
+ cacheName
+ ']'));
return;
}
Collection<Map.Entry<K, V>> col = mappings.get(node);
if (col == null) mappings.put(node, col = new ArrayList<>());
col.add(entry);
}
for (final Map.Entry<GridNode, Collection<Map.Entry<K, V>>> e : mappings.entrySet()) {
final UUID nodeId = e.getKey().id();
Buffer buf = bufMappings.get(nodeId);
if (buf == null) {
Buffer old = bufMappings.putIfAbsent(nodeId, buf = new Buffer(e.getKey()));
if (old != null) buf = old;
}
final Collection<Map.Entry<K, V>> entriesForNode = e.getValue();
GridInClosure<GridFuture<?>> lsnr =
new GridInClosure<GridFuture<?>>() {
@Override
public void apply(GridFuture<?> t) {
try {
t.get();
for (Map.Entry<K, V> e : entriesForNode) activeKeys.remove(e.getKey());
if (activeKeys.isEmpty()) resFut.onDone();
} catch (GridException e1) {
if (log.isDebugEnabled())
log.debug("Future finished with error [nodeId=" + nodeId + ", err=" + e1 + ']');
if (cancelled) {
resFut.onDone(
new GridException(
"Data loader has been cancelled: " + GridDataLoaderImpl.this, e1));
} else load0(entriesForNode, resFut, activeKeys, remaps + 1);
}
}
};
GridFutureAdapter<?> f;
try {
f = buf.update(entriesForNode, lsnr);
} catch (GridInterruptedException e1) {
resFut.onDone(e1);
return;
}
if (ctx.discovery().node(nodeId) == null) {
if (bufMappings.remove(nodeId, buf)) buf.onNodeLeft();
if (f != null)
f.onDone(
new GridTopologyException(
"Failed to wait for request completion " + "(node has left): " + nodeId));
}
}
}
/**
* 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;
}
}
/** {@inheritDoc} */
@SuppressWarnings("ForLoopReplaceableByForEach")
@Override
public void flush() throws GridException {
enterBusy();
try {
doFlush();
} finally {
leaveBusy();
}
}
/**
* Flushes every internal buffer if buffer was flushed before passed in threshold.
*
* <p>Does not wait for result and does not fail on errors assuming that this method should be
* called periodically.
*/
@Override
public void tryFlush() throws GridInterruptedException {
if (!busyLock.enterBusy()) return;
try {
for (Buffer buf : bufMappings.values()) buf.flush();
lastFlushTime = U.currentTimeMillis();
} finally {
leaveBusy();
}
}
/**
* @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 the loader is closed. */
boolean isClosed() {
return fut.isDone();
}
/** {@inheritDoc} */
@Override
public void close() throws GridException {
close(false);
}
/** {@inheritDoc} */
@Override
public String toString() {
return S.toString(GridDataLoaderImpl.class, this);
}
/** {@inheritDoc} */
@Override
public long getDelay(TimeUnit unit) {
return unit.convert(nextFlushTime() - U.currentTimeMillis(), TimeUnit.MILLISECONDS);
}
/** @return Next flush time. */
private long nextFlushTime() {
return lastFlushTime + autoFlushFreq;
}
/** {@inheritDoc} */
@Override
public int compareTo(Delayed o) {
return nextFlushTime() > ((GridDataLoaderImpl) o).nextFlushTime() ? 1 : -1;
}
/** */
private class Buffer {
/** Node. */
private final GridNode node;
/** Active futures. */
private final Collection<GridFuture<Object>> locFuts;
/** Buffered entries. */
private List<Map.Entry<K, V>> entries;
/** */
@GridToStringExclude private GridFutureAdapter<Object> curFut;
/** Local node flag. */
private final boolean isLocNode;
/** ID generator. */
private final AtomicLong idGen = new AtomicLong();
/** Active futures. */
private final ConcurrentMap<Long, GridFutureAdapter<Object>> reqs;
/** */
private final Semaphore sem;
/** Closure to signal on task finish. */
@GridToStringExclude
private final GridInClosure<GridFuture<Object>> signalC =
new GridInClosure<GridFuture<Object>>() {
@Override
public void apply(GridFuture<Object> t) {
signalTaskFinished(t);
}
};
/** @param node Node. */
Buffer(GridNode node) {
assert node != null;
this.node = node;
locFuts = new GridConcurrentHashSet<>();
reqs = new ConcurrentHashMap8<>();
// Cache local node flag.
isLocNode = node.equals(ctx.discovery().localNode());
entries = newEntries();
curFut = new GridFutureAdapter<>(ctx);
curFut.listenAsync(signalC);
sem = new Semaphore(parallelOps);
}
/**
* @param newEntries Infos.
* @param lsnr Listener for the operation future.
* @throws GridInterruptedException If failed.
* @return Future for operation.
*/
@Nullable
GridFutureAdapter<?> update(
Iterable<Map.Entry<K, V>> newEntries, GridInClosure<GridFuture<?>> lsnr)
throws GridInterruptedException {
List<Map.Entry<K, V>> entries0 = null;
GridFutureAdapter<Object> curFut0;
synchronized (this) {
curFut0 = curFut;
curFut0.listenAsync(lsnr);
for (Map.Entry<K, V> entry : newEntries) entries.add(entry);
if (entries.size() >= bufSize) {
entries0 = entries;
entries = newEntries();
curFut = new GridFutureAdapter<>(ctx);
curFut.listenAsync(signalC);
}
}
if (entries0 != null) {
submit(entries0, curFut0);
if (cancelled)
curFut0.onDone(
new GridException("Data loader has been cancelled: " + GridDataLoaderImpl.this));
}
return curFut0;
}
/** @return Fresh collection with some space for outgrowth. */
private List<Map.Entry<K, V>> newEntries() {
return new ArrayList<>((int) (bufSize * 1.2));
}
/**
* @return Future if any submitted.
* @throws GridInterruptedException If thread has been interrupted.
*/
@Nullable
GridFuture<?> flush() throws GridInterruptedException {
List<Map.Entry<K, V>> entries0 = null;
GridFutureAdapter<Object> curFut0 = null;
synchronized (this) {
if (!entries.isEmpty()) {
entries0 = entries;
curFut0 = curFut;
entries = newEntries();
curFut = new GridFutureAdapter<>(ctx);
curFut.listenAsync(signalC);
}
}
if (entries0 != null) submit(entries0, curFut0);
// Create compound future for this flush.
GridCompoundFuture<Object, Object> res = null;
for (GridFuture<Object> f : locFuts) {
if (res == null) res = new GridCompoundFuture<>(ctx);
res.add(f);
}
for (GridFuture<Object> f : reqs.values()) {
if (res == null) res = new GridCompoundFuture<>(ctx);
res.add(f);
}
if (res != null) res.markInitialized();
return res;
}
/**
* Increments active tasks count.
*
* @throws GridInterruptedException If thread has been interrupted.
*/
private void incrementActiveTasks() throws GridInterruptedException {
U.acquire(sem);
}
/** @param f Future that finished. */
private void signalTaskFinished(GridFuture<Object> f) {
assert f != null;
sem.release();
}
/**
* @param entries Entries to submit.
* @param curFut Current future.
* @throws GridInterruptedException If interrupted.
*/
private void submit(final List<Map.Entry<K, V>> entries, final GridFutureAdapter<Object> curFut)
throws GridInterruptedException {
assert entries != null;
assert !entries.isEmpty();
assert curFut != null;
incrementActiveTasks();
GridFuture<Object> fut;
if (isLocNode) {
fut =
ctx.closure()
.callLocalSafe(
new GridDataLoadUpdateJob<>(ctx, log, cacheName, entries, false, updater),
false);
locFuts.add(fut);
fut.listenAsync(
new GridInClosure<GridFuture<Object>>() {
@Override
public void apply(GridFuture<Object> t) {
try {
boolean rmv = locFuts.remove(t);
assert rmv;
curFut.onDone(t.get());
} catch (GridException e) {
curFut.onDone(e);
}
}
});
} else {
byte[] entriesBytes;
try {
entriesBytes = ctx.config().getMarshaller().marshal(entries);
if (updaterBytes == null) {
assert updater != null;
updaterBytes = ctx.config().getMarshaller().marshal(updater);
}
if (topicBytes == null) topicBytes = ctx.config().getMarshaller().marshal(topic);
} catch (GridException e) {
U.error(log, "Failed to marshal (request will not be sent).", e);
return;
}
GridDeployment dep = null;
GridPeerDeployAware jobPda0 = null;
if (ctx.deploy().enabled()) {
try {
jobPda0 = jobPda;
assert jobPda0 != null;
dep = ctx.deploy().deploy(jobPda0.deployClass(), jobPda0.classLoader());
} catch (GridException e) {
U.error(
log,
"Failed to deploy class (request will not be sent): " + jobPda0.deployClass(),
e);
return;
}
if (dep == null)
U.warn(log, "Failed to deploy class (request will be sent): " + jobPda0.deployClass());
}
long reqId = idGen.incrementAndGet();
fut = curFut;
reqs.put(reqId, (GridFutureAdapter<Object>) fut);
GridDataLoadRequest<Object, Object> req =
new GridDataLoadRequest<>(
reqId,
topicBytes,
cacheName,
updaterBytes,
entriesBytes,
true,
dep != null ? dep.deployMode() : null,
dep != null ? jobPda0.deployClass().getName() : null,
dep != null ? dep.userVersion() : null,
dep != null ? dep.participants() : null,
dep != null ? dep.classLoaderId() : null,
dep == null);
try {
ctx.io().send(node, TOPIC_DATALOAD, req, PUBLIC_POOL);
if (log.isDebugEnabled())
log.debug("Sent request to node [nodeId=" + node.id() + ", req=" + req + ']');
} catch (GridException e) {
if (ctx.discovery().alive(node) && ctx.discovery().pingNode(node.id()))
((GridFutureAdapter<Object>) fut).onDone(e);
else
((GridFutureAdapter<Object>) fut)
.onDone(
new GridTopologyException(
"Failed to send " + "request (node has left): " + node.id()));
}
}
}
/** */
void onNodeLeft() {
assert !isLocNode;
assert bufMappings.get(node.id()) != this;
if (log.isDebugEnabled())
log.debug("Forcibly completing futures (node has left): " + node.id());
Exception e =
new GridTopologyException(
"Failed to wait for request completion " + "(node has left): " + node.id());
for (GridFutureAdapter<Object> f : reqs.values()) f.onDone(e);
// Make sure to complete current future.
GridFutureAdapter<Object> curFut0;
synchronized (this) {
curFut0 = curFut;
}
curFut0.onDone(e);
}
/** @param res Response. */
void onResponse(GridDataLoadResponse res) {
if (log.isDebugEnabled()) log.debug("Received data load response: " + res);
GridFutureAdapter<?> f = reqs.remove(res.requestId());
if (f == null) {
if (log.isDebugEnabled())
log.debug("Future for request has not been found: " + res.requestId());
return;
}
Throwable err = null;
byte[] errBytes = res.errorBytes();
if (errBytes != null) {
try {
GridPeerDeployAware jobPda0 = jobPda;
err =
ctx.config()
.getMarshaller()
.unmarshal(
errBytes, jobPda0 != null ? jobPda0.classLoader() : U.gridClassLoader());
} catch (GridException e) {
f.onDone(null, new GridException("Failed to unmarshal response.", e));
return;
}
}
f.onDone(null, err);
if (log.isDebugEnabled())
log.debug(
"Finished future [fut=" + f + ", reqId=" + res.requestId() + ", err=" + err + ']');
}
/** */
void cancelAll() {
GridException err =
new GridException("Data loader has been cancelled: " + GridDataLoaderImpl.this);
for (GridFuture<?> f : locFuts) {
try {
f.cancel();
} catch (GridException e) {
U.error(log, "Failed to cancel mini-future.", e);
}
}
for (GridFutureAdapter<?> f : reqs.values()) f.onDone(err);
}
/** {@inheritDoc} */
@Override
public String toString() {
int size;
synchronized (this) {
size = entries.size();
}
return S.toString(
Buffer.class,
this,
"entriesCnt",
size,
"locFutsSize",
locFuts.size(),
"reqsSize",
reqs.size());
}
}
/** Data loader peer-deploy aware. */
private class DataLoaderPda implements GridPeerDeployAware {
/** Deploy class. */
private Class<?> cls;
/** Class loader. */
private ClassLoader ldr;
/** Collection of objects to detect deploy class and class loader. */
private Collection<Object> objs;
/**
* Constructs data loader peer-deploy aware.
*
* @param objs Collection of objects to detect deploy class and class loader.
*/
private DataLoaderPda(Object... objs) {
this.objs = Arrays.asList(objs);
}
/** {@inheritDoc} */
@Override
public Class<?> deployClass() {
if (cls == null) {
Class<?> cls0 = null;
if (depCls != null) cls0 = depCls;
else {
for (Iterator<Object> it = objs.iterator();
(cls0 == null || U.isJdk(cls0)) && it.hasNext(); ) {
Object o = it.next();
if (o != null) cls0 = U.detectClass(o);
}
if (cls0 == null || U.isJdk(cls0)) cls0 = GridDataLoaderImpl.class;
}
assert cls0 != null : "Failed to detect deploy class [objs=" + objs + ']';
cls = cls0;
}
return cls;
}
/** {@inheritDoc} */
@Override
public ClassLoader classLoader() {
if (ldr == null) {
ClassLoader ldr0 = deployClass().getClassLoader();
// Safety.
if (ldr0 == null) ldr0 = U.gridClassLoader();
assert ldr0 != null : "Failed to detect classloader [objs=" + objs + ']';
ldr = ldr0;
}
return ldr;
}
}
/** Entry. */
private static class Entry0<K, V> implements Map.Entry<K, V>, Externalizable {
/** */
private K key;
/** */
private V val;
/**
* @param key Key.
* @param val Value.
*/
private Entry0(K key, @Nullable V val) {
assert key != null;
this.key = key;
this.val = val;
}
/** For {@link Externalizable}. */
@SuppressWarnings("UnusedDeclaration")
public Entry0() {
// No-op.
}
/** {@inheritDoc} */
@Override
public K getKey() {
return key;
}
/** {@inheritDoc} */
@Override
public V getValue() {
return val;
}
/** {@inheritDoc} */
@Override
public V setValue(V val) {
throw new UnsupportedOperationException();
}
/** {@inheritDoc} */
@Override
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(key);
out.writeObject(val);
}
/** {@inheritDoc} */
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
key = (K) in.readObject();
val = (V) in.readObject();
}
}
}
/** {@inheritDoc} */
@Override
public boolean isolated() {
return updater != GridDataLoadCacheUpdaters.individual();
}