@Override
public CompletableFuture<Void> visitReadOnlyKeyCommand(
InvocationContext ctx, ReadOnlyKeyCommand command) throws Throwable {
try {
CacheEntry entry = entryFactory.wrapEntryForReading(ctx, command.getKey(), null);
// Null entry is often considered to mean that entry is not available
// locally, but if there's no need to get remote, the read-only
// function needs to be executed, so force a non-null entry in
// context with null content
if (entry == null && cdl.localNodeIsOwner(command.getKey())) {
entryFactory.wrapEntryForReading(ctx, command.getKey(), NullCacheEntry.getInstance());
}
return ctx.shortCircuit(ctx.forkInvocationSync(command));
} finally {
// needed because entries might be added in L1
if (!ctx.isInTxScope()) commitContextEntries(ctx, command, null);
else {
CacheEntry entry = ctx.lookupEntry(command.getKey());
if (entry != null) {
entry.setSkipLookup(true);
}
}
}
}
@Override
public Object visitApplyDeltaCommand(InvocationContext ctx, ApplyDeltaCommand command)
throws Throwable {
if (cdl.localNodeIsOwner(command.getKey())) {
entryFactory.wrapEntryForDelta(ctx, command.getKey(), command.getDelta());
ctx.forkInvocationSync(command);
}
return null;
}
private Object invokeNextAndApplyChanges(
InvocationContext ctx, FlagAffectedCommand command, Metadata metadata) throws Throwable {
final Object result = ctx.forkInvocationSync(command);
if (!ctx.isInTxScope()) {
stateTransferLock.acquireSharedTopologyLock();
try {
// We only retry non-tx write commands
if (command instanceof WriteCommand) {
WriteCommand writeCommand = (WriteCommand) command;
// Can't perform the check during preload or if the cache isn't clustered
boolean isSync =
(cacheConfiguration.clustering().cacheMode().isSynchronous()
&& !command.hasFlag(Flag.FORCE_ASYNCHRONOUS))
|| command.hasFlag(Flag.FORCE_SYNCHRONOUS);
if (writeCommand.isSuccessful()
&& stateConsumer != null
&& stateConsumer.getCacheTopology() != null) {
int commandTopologyId = command.getTopologyId();
int currentTopologyId = stateConsumer.getCacheTopology().getTopologyId();
// TotalOrderStateTransferInterceptor doesn't set the topology id for PFERs.
if (isSync && currentTopologyId != commandTopologyId && commandTopologyId != -1) {
// If we were the originator of a data command which we didn't own the key at the time
// means it
// was already committed, so there is no need to throw the OutdatedTopologyException
// This will happen if we submit a command to the primary owner and it responds and
// then a topology
// change happens before we get here
if (!ctx.isOriginLocal()
|| !(command instanceof DataCommand)
|| ctx.hasLockedKey(((DataCommand) command).getKey())) {
if (trace)
log.tracef(
"Cache topology changed while the command was executing: expected %d, got %d",
commandTopologyId, currentTopologyId);
// This shouldn't be necessary, as we'll have a fresh command instance when retrying
writeCommand.setValueMatcher(writeCommand.getValueMatcher().matcherForRetry());
throw new OutdatedTopologyException(
"Cache topology changed while the command was executing: expected "
+ commandTopologyId
+ ", got "
+ currentTopologyId);
}
}
}
}
commitContextEntries(ctx, command, metadata);
} finally {
stateTransferLock.releaseSharedTopologyLock();
}
}
if (trace) log.tracef("The return value is %s", toStr(result));
return result;
}
@Override
public Object visitPutKeyValueCommand(InvocationContext ctx, PutKeyValueCommand command)
throws Throwable {
if (cdl.localNodeIsOwner(command.getKey())) {
entryFactory.wrapEntryForWriting(
ctx, command.getKey(), EntryFactory.Wrap.WRAP_ALL, false, false);
ctx.forkInvocationSync(command);
}
return null;
}
@Override
public Object visitRemoveCommand(InvocationContext ctx, RemoveCommand command)
throws Throwable {
if (cdl.localNodeIsOwner(command.getKey())) {
boolean forceWrap = command.getValueMatcher().nonExistentEntryCanMatch();
EntryFactory.Wrap wrap =
forceWrap ? EntryFactory.Wrap.WRAP_ALL : EntryFactory.Wrap.WRAP_NON_NULL;
entryFactory.wrapEntryForWriting(ctx, command.getKey(), wrap, false, false);
ctx.forkInvocationSync(command);
}
return null;
}
@Override
public Object visitReplaceCommand(InvocationContext ctx, ReplaceCommand command)
throws Throwable {
if (cdl.localNodeIsOwner(command.getKey())) {
// When retrying, we need to perform the command even if the previous value was deleted.
boolean forceWrap = command.getValueMatcher().nonExistentEntryCanMatch();
EntryFactory.Wrap wrap =
forceWrap ? EntryFactory.Wrap.WRAP_ALL : EntryFactory.Wrap.WRAP_NON_NULL;
entryFactory.wrapEntryForWriting(ctx, command.getKey(), wrap, false, false);
ctx.forkInvocationSync(command);
}
return null;
}
@Override
public Object visitInvalidateCommand(InvocationContext ctx, InvalidateCommand command)
throws Throwable {
if (command.getKeys() != null) {
for (Object key : command.getKeys()) {
if (cdl.localNodeIsOwner(key)) {
entryFactory.wrapEntryForWriting(
ctx, key, EntryFactory.Wrap.WRAP_NON_NULL, false, false);
ctx.forkInvocationSync(command);
}
}
}
return null;
}
private CompletableFuture<Void> visitDataReadCommand(
InvocationContext ctx, AbstractDataCommand command) throws Throwable {
try {
entryFactory.wrapEntryForReading(ctx, command.getKey(), null);
return ctx.shortCircuit(ctx.forkInvocationSync(command));
} finally {
// needed because entries might be added in L1
if (!ctx.isInTxScope()) commitContextEntries(ctx, command, null);
else {
CacheEntry entry = ctx.lookupEntry(command.getKey());
if (entry != null) {
entry.setSkipLookup(true);
}
}
}
}
@Override
public Object visitPutMapCommand(InvocationContext ctx, PutMapCommand command)
throws Throwable {
Map<Object, Object> newMap = new HashMap<>(4);
for (Map.Entry<Object, Object> e : command.getMap().entrySet()) {
Object key = e.getKey();
if (cdl.localNodeIsOwner(key)) {
entryFactory.wrapEntryForWriting(ctx, key, EntryFactory.Wrap.WRAP_ALL, true, false);
newMap.put(key, e.getValue());
}
}
if (newMap.size() > 0) {
PutMapCommand clonedCommand =
commandFactory.buildPutMapCommand(
newMap, command.getMetadata(), command.getFlagsBitSet());
ctx.forkInvocationSync(clonedCommand);
}
return null;
}
@Override
public CompletableFuture<Void> visitReadOnlyManyCommand(
InvocationContext ctx, ReadOnlyManyCommand command) throws Throwable {
try {
for (Object key : command.getKeys()) {
entryFactory.wrapEntryForReading(ctx, key, null);
}
return ctx.shortCircuit(ctx.forkInvocationSync(command));
} finally {
if (ctx.isInTxScope()) {
for (Object key : command.getKeys()) {
CacheEntry entry = ctx.lookupEntry(key);
if (entry != null) {
entry.setSkipLookup(true);
}
}
}
}
}
