private DeltaAwareCacheEntry wrapInternalCacheEntryForDelta(
InvocationContext ctx, Object key, CacheEntry cacheEntry) {
DeltaAwareCacheEntry e;
if (cacheEntry instanceof MVCCEntry) {
e = createWrappedDeltaEntry(key, (DeltaAware) cacheEntry.getValue(), cacheEntry);
} else {
e = createWrappedDeltaEntry(key, (DeltaAware) cacheEntry.getValue(), null);
}
ctx.putLookedUpEntry(key, e);
return e;
}
private void raiseEventForInitialTransfer(UUID identifier, CacheEntry entry, boolean clustered) {
EventImpl preEvent;
if (clustered) {
// In clustered mode we only send post event
preEvent = null;
} else {
preEvent = EventImpl.createEvent(cache, CACHE_ENTRY_CREATED);
preEvent.setKey(entry.getKey());
preEvent.setPre(true);
}
EventImpl postEvent = EventImpl.createEvent(cache, CACHE_ENTRY_CREATED);
postEvent.setKey(entry.getKey());
postEvent.setValue(entry.getValue());
postEvent.setMetadata(entry.getMetadata());
postEvent.setPre(false);
for (CacheEntryListenerInvocation<K, V> invocation : cacheEntryCreatedListeners) {
// Now notify all our methods of the creates
if (invocation.getIdentifier() == identifier) {
if (preEvent != null) {
// Non clustered notifications are done twice
invocation.invokeNoChecks(preEvent, true, true);
}
invocation.invokeNoChecks(postEvent, true, true);
}
}
}
@Override
public final CacheEntry wrapEntryForReading(InvocationContext ctx, Object key)
throws InterruptedException {
CacheEntry cacheEntry = getFromContext(ctx, key);
if (cacheEntry == null) {
cacheEntry = getFromContainer(key);
// do not bother wrapping though if this is not in a tx. repeatable read etc are all
// meaningless unless there is a tx.
if (useRepeatableRead) {
MVCCEntry mvccEntry =
cacheEntry == null
? createWrappedEntry(key, null, null, false, false, -1)
: createWrappedEntry(
key,
cacheEntry.getValue(),
cacheEntry.getVersion(),
false,
false,
cacheEntry.getLifespan());
if (mvccEntry != null) ctx.putLookedUpEntry(key, mvccEntry);
return mvccEntry;
} else if (cacheEntry
!= null) { // if not in transaction and repeatable read, or simply read committed
// (regardless of whether in TX or not), do not wrap
ctx.putLookedUpEntry(key, cacheEntry);
}
return cacheEntry;
}
return cacheEntry;
}
public static Collection getInternalValues(Cache cache) {
DataContainer dataContainer = TestingUtil.extractComponent(cache, DataContainer.class);
Collection values = new ArrayList();
for (CacheEntry entry : dataContainer) {
values.add(entry.getValue());
}
return values;
}
private Object realRemoteGet(
InvocationContext ctx, Object key, boolean storeInL1, boolean isWrite) throws Throwable {
if (trace) log.tracef("Doing a remote get for key %s", key);
boolean acquireRemoteLock = false;
if (ctx.isInTxScope()) {
TxInvocationContext txContext = (TxInvocationContext) ctx;
acquireRemoteLock =
isWrite && isPessimisticCache && !txContext.getAffectedKeys().contains(key);
}
// attempt a remote lookup
InternalCacheEntry ice = dm.retrieveFromRemoteSource(key, ctx, acquireRemoteLock);
if (acquireRemoteLock) {
((TxInvocationContext) ctx).addAffectedKey(key);
}
if (ice != null) {
if (storeInL1) {
if (isL1CacheEnabled) {
if (trace) log.tracef("Caching remotely retrieved entry for key %s in L1", key);
// This should be fail-safe
try {
long lifespan =
ice.getLifespan() < 0
? configuration.getL1Lifespan()
: Math.min(ice.getLifespan(), configuration.getL1Lifespan());
PutKeyValueCommand put =
cf.buildPutKeyValueCommand(
ice.getKey(), ice.getValue(), lifespan, -1, ctx.getFlags());
lockAndWrap(ctx, key, ice);
invokeNextInterceptor(ctx, put);
} catch (Exception e) {
// Couldn't store in L1 for some reason. But don't fail the transaction!
log.infof("Unable to store entry %s in L1 cache", key);
log.debug("Inability to store in L1 caused by", e);
}
} else {
CacheEntry ce = ctx.lookupEntry(key);
if (ce == null || ce.isNull() || ce.isLockPlaceholder() || ce.getValue() == null) {
if (ce != null && ce.isChanged()) {
ce.setValue(ice.getValue());
} else {
if (isWrite) lockAndWrap(ctx, key, ice);
else ctx.putLookedUpEntry(key, ice);
}
}
}
} else {
if (trace) log.tracef("Not caching remotely retrieved entry for key %s in L1", key);
}
return ice.getValue();
}
return null;
}
public static String printCache(Cache cache) {
DataContainer dataContainer = TestingUtil.extractComponent(cache, DataContainer.class);
Iterator it = dataContainer.iterator();
StringBuilder builder = new StringBuilder(cache.getName() + "[");
while (it.hasNext()) {
CacheEntry ce = (CacheEntry) it.next();
builder.append(ce.getKey() + "=" + ce.getValue() + ",l=" + ce.getLifespan() + "; ");
}
builder.append("]");
return builder.toString();
}
private MVCCEntry wrapMvccEntryForRemove(
InvocationContext ctx, Object key, CacheEntry cacheEntry) {
MVCCEntry mvccEntry =
createWrappedEntry(
key,
cacheEntry.getValue(),
cacheEntry.getVersion(),
false,
true,
cacheEntry.getLifespan());
ctx.putLookedUpEntry(key, mvccEntry);
return mvccEntry;
}
protected Object performRemove(CacheEntry e, InvocationContext ctx) {
final Object removedValue = e.getValue();
notify(ctx, removedValue, e.getMetadata(), true);
e.setRemoved(true);
e.setValid(false);
e.setChanged(true);
if (valueMatcher != ValueMatcher.MATCH_EXPECTED_OR_NEW) {
return isConditional() ? true : removedValue;
} else {
// Return the expected value when retrying
return isConditional() ? true : value;
}
}
protected void notifyCommitEntry(
boolean created,
boolean removed,
boolean expired,
CacheEntry entry,
InvocationContext ctx,
FlagAffectedCommand command,
Object previousValue,
Metadata previousMetadata) {
boolean isWriteOnly =
(command instanceof WriteCommand) && ((WriteCommand) command).isWriteOnly();
if (removed) {
if (command instanceof RemoveCommand) {
((RemoveCommand) command).notify(ctx, previousValue, previousMetadata, false);
} else {
if (expired) {
notifier.notifyCacheEntryExpired(entry.getKey(), previousValue, previousMetadata, ctx);
} else {
notifier.notifyCacheEntryRemoved(
entry.getKey(), previousValue, previousMetadata, false, ctx, command);
}
// A write-only command only writes and so can't 100% guarantee
// to be able to retrieve previous value when removed, so only
// send remove event when the command is read-write.
if (!isWriteOnly)
functionalNotifier.notifyOnRemove(
EntryViews.readOnly(entry.getKey(), previousValue, previousMetadata));
functionalNotifier.notifyOnWrite(() -> EntryViews.noValue(entry.getKey()));
}
} else {
// Notify entry event after container has been updated
if (created) {
notifier.notifyCacheEntryCreated(
entry.getKey(), entry.getValue(), entry.getMetadata(), false, ctx, command);
// A write-only command only writes and so can't 100% guarantee
// that an entry has been created, so only send create event
// when the command is read-write.
if (!isWriteOnly) functionalNotifier.notifyOnCreate(EntryViews.readOnly(entry));
functionalNotifier.notifyOnWrite(() -> EntryViews.readOnly(entry));
} else {
notifier.notifyCacheEntryModified(
entry.getKey(),
entry.getValue(),
entry.getMetadata(),
previousValue,
previousMetadata,
false,
ctx,
command);
// A write-only command only writes and so can't 100% guarantee
// that an entry has been created, so only send modify when the
// command is read-write.
if (!isWriteOnly)
functionalNotifier.notifyOnModify(
EntryViews.readOnly(entry.getKey(), previousValue, previousMetadata),
EntryViews.readOnly(entry));
functionalNotifier.notifyOnWrite(() -> EntryViews.readOnly(entry));
}
}
}
