--- /dev/null
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2009 Red Hat Inc. and/or its affiliates and other
+ * contributors as indicated by the @author tags. All rights reserved.
+ * See the copyright.txt in the distribution for a full listing of
+ * individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.infinispan.interceptors.distribution;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.infinispan.CacheException;
+import org.infinispan.commands.FlagAffectedCommand;
+import org.infinispan.commands.remote.ClusteredGetCommand;
+import org.infinispan.commands.write.DataWriteCommand;
+import org.infinispan.commands.write.WriteCommand;
+import org.infinispan.container.entries.InternalCacheEntry;
+import org.infinispan.container.entries.InternalCacheValue;
+import org.infinispan.context.InvocationContext;
+import org.infinispan.context.impl.TxInvocationContext;
+import org.infinispan.distribution.DistributionManager;
+import org.infinispan.factories.annotations.Inject;
+import org.infinispan.interceptors.ClusteringInterceptor;
+import org.infinispan.interceptors.locking.ClusteringDependentLogic;
+import org.infinispan.remoting.responses.ClusteredGetResponseValidityFilter;
+import org.infinispan.remoting.responses.ExceptionResponse;
+import org.infinispan.remoting.responses.Response;
+import org.infinispan.remoting.responses.SuccessfulResponse;
+import org.infinispan.remoting.rpc.ResponseFilter;
+import org.infinispan.remoting.rpc.ResponseMode;
+import org.infinispan.remoting.rpc.RpcOptions;
+import org.infinispan.remoting.transport.Address;
+import org.infinispan.transaction.xa.GlobalTransaction;
+import org.infinispan.util.logging.Log;
+import org.infinispan.util.logging.LogFactory;
+
+
+/**
+ * Base class for distribution of entries across a cluster.
+ *
+ * @author Manik Surtani
+ * @author Mircea.Markus@jboss.com
+ * @author Pete Muir
+ * @author Dan Berindei <dan@infinispan.org>
+ * @since 4.0
+ */
+public abstract class BaseDistributionInterceptor extends ClusteringInterceptor {
+
+ protected DistributionManager dm;
+
+ protected ClusteringDependentLogic cdl;
+
+ private static final Log log = LogFactory.getLog(BaseDistributionInterceptor.class);
+
+ @Override
+ protected Log getLog() {
+ return log;
+ }
+
+ @Inject
+ public void injectDependencies(DistributionManager distributionManager, ClusteringDependentLogic cdl) {
+ this.dm = distributionManager;
+ this.cdl = cdl;
+ }
+
+ @Override
+ protected final InternalCacheEntry retrieveFromRemoteSource(Object key, InvocationContext ctx, boolean acquireRemoteLock, FlagAffectedCommand command) throws Exception {
+ GlobalTransaction gtx = acquireRemoteLock ? ((TxInvocationContext)ctx).getGlobalTransaction() : null;
+ ClusteredGetCommand get = cf.buildClusteredGetCommand(key, command.getFlags(), acquireRemoteLock, gtx);
+
+ List<Address> targets = new ArrayList<Address>(stateTransferManager.getCacheTopology().getReadConsistentHash().locateOwners(key));
+ // if any of the recipients has left the cluster since the command was issued, just don't wait for its response
+ targets.retainAll(rpcManager.getTransport().getMembers());
+ ResponseFilter filter = new ClusteredGetResponseValidityFilter(targets, rpcManager.getAddress());
+ RpcOptions options = rpcManager.getRpcOptionsBuilder(ResponseMode.WAIT_FOR_VALID_RESPONSE, false)
+ .responseFilter(filter).build();
+ Map<Address, Response> responses = rpcManager.invokeRemotely(targets, get, options);
+
+ if (!responses.isEmpty()) {
+ for (Response r : responses.values()) {
+ if (r instanceof SuccessfulResponse) {
+ InternalCacheValue cacheValue = (InternalCacheValue) ((SuccessfulResponse) r).getResponseValue();
+ return cacheValue.toInternalCacheEntry(key);
+ }
+ }
+ }
+
+ // TODO If everyone returned null, and the read CH has changed, retry the remote get.
+ // Otherwise our get command might be processed by the old owners after they have invalidated their data
+ // and we'd return a null even though the key exists on
+ return null;
+ }
+
+ protected final Object handleNonTxWriteCommand(InvocationContext ctx, DataWriteCommand command) throws Throwable {
+ if (ctx.isInTxScope()) {
+ throw new CacheException("Attempted execution of non-transactional write command in a transactional invocation context");
+ }
+
+ RecipientGenerator recipientGenerator = new SingleKeyRecipientGenerator(command.getKey());
+
+ // see if we need to load values from remote sources first
+ remoteGetBeforeWrite(ctx, command, recipientGenerator);
+
+ // if this is local mode then skip distributing
+ if (isLocalModeForced(command)) {
+ return invokeNextInterceptor(ctx, command);
+ }
+
+ boolean isSync = isSynchronous(command);
+ if (!ctx.isOriginLocal()) {
+ Object returnValue = invokeNextInterceptor(ctx, command);
+ Address primaryOwner = cdl.getPrimaryOwner(command.getKey());
+ if (primaryOwner.equals(rpcManager.getAddress())) {
+ if (command.isConditional() && !command.isSuccessful()) {
+ log.tracef(
+ "Skipping the replication of the conditional command as it did not succeed on primary owner (%s).",
+ command);
+ return returnValue;
+ }
+ rpcManager.invokeRemotely(recipientGenerator.generateRecipients(), command,
+ rpcManager.getDefaultRpcOptions(isSync));
+ } else {
+ log.tracef("Didn't invoke RPC because primaryOwner (%s) didn't match this node (%s)", primaryOwner,
+ rpcManager.getAddress());
+ log.tracef("Hashcode is (%s) for Key (%s)",
+ command.getKey().hashCode(), command.getKey());
+ }
+ return returnValue;
+ } else {
+ Address primaryOwner = cdl.getPrimaryOwner(command.getKey());
+ if (primaryOwner.equals(rpcManager.getAddress())) {
+ Object result = invokeNextInterceptor(ctx, command);
+ if (command.isConditional() && !command.isSuccessful()) {
+ log.tracef("Skipping the replication of the conditional command as it did not succeed on primary owner (%s).", command);
+ return result;
+ }
+ List<Address> recipients = recipientGenerator.generateRecipients();
+ log.tracef("I'm the primary owner, sending the command to all (%s) the recipients in order to be applied.", recipients);
+ // check if a single owner has been configured and the target for the key is the local address
+ boolean isSingleOwnerAndLocal = cacheConfiguration.clustering().hash().numOwners() == 1
+ && recipients != null
+ && recipients.size() == 1
+ && recipients.get(0).equals(rpcManager.getTransport().getAddress());
+ if (!isSingleOwnerAndLocal) {
+ rpcManager.invokeRemotely(recipients, command, rpcManager.getDefaultRpcOptions(isSync));
+ }
+ return result;
+ } else {
+ log.tracef("I'm not the primary owner, so sending the command to the primary owner(%s) in order to be forwarded", primaryOwner);
+ log.tracef("Hashcode is (%s) for Key (%s)", command.getKey().hashCode(), command.getKey());
+
+ Object localResult = invokeNextInterceptor(ctx, command);
+ boolean isSyncForwarding = isSync || isNeedReliableReturnValues(command);
+ Map<Address, Response> addressResponseMap = rpcManager.invokeRemotely(Collections.singletonList(primaryOwner), command,
+ rpcManager.getDefaultRpcOptions(isSyncForwarding));
+ if (!isSyncForwarding) return localResult;
+
+ return getResponseFromPrimaryOwner(primaryOwner, addressResponseMap);
+ }
+ }
+ }
+
+ private Object getResponseFromPrimaryOwner(Address primaryOwner, Map<Address, Response> addressResponseMap) {
+ Response fromPrimaryOwner = addressResponseMap.get(primaryOwner);
+ if (fromPrimaryOwner == null) {
+ log.tracef("Primary owner %s returned null", primaryOwner);
+ return null;
+ }
+ if (!fromPrimaryOwner.isSuccessful()) {
+ Throwable cause = fromPrimaryOwner instanceof ExceptionResponse ? ((ExceptionResponse)fromPrimaryOwner).getException() : null;
+ throw new CacheException("Got unsuccessful response from primary owner: " + fromPrimaryOwner, cause);
+ } else {
+ return ((SuccessfulResponse) fromPrimaryOwner).getResponseValue();
+ }
+ }
+
+ protected abstract void remoteGetBeforeWrite(InvocationContext ctx, WriteCommand command, RecipientGenerator keygen) throws Throwable;
+
+ interface RecipientGenerator {
+
+ Collection<Object> getKeys();
+
+ List<Address> generateRecipients();
+ }
+
+ class SingleKeyRecipientGenerator implements RecipientGenerator {
+ private final Object key;
+ private final Set<Object> keys;
+ private List<Address> recipients = null;
+
+ SingleKeyRecipientGenerator(Object key) {
+ this.key = key;
+ keys = Collections.singleton(key);
+ }
+
+ @Override
+ public List<Address> generateRecipients() {
+ if (recipients == null) {
+ recipients = cdl.getOwners(key);
+ }
+ return recipients;
+ }
+
+ @Override
+ public Collection<Object> getKeys() {
+ return keys;
+ }
+ }
+
+ class MultipleKeysRecipientGenerator implements RecipientGenerator {
+
+ private final Collection<Object> keys;
+ private List<Address> recipients = null;
+
+ MultipleKeysRecipientGenerator(Collection<Object> keys) {
+ this.keys = keys;
+ }
+
+ @Override
+ public List<Address> generateRecipients() {
+ if (recipients == null) {
+ recipients = cdl.getOwners(keys);
+ }
+ return recipients;
+ }
+
+ @Override
+ public Collection<Object> getKeys() {
+ return keys;
+ }
+ }
+}
Code Review / controller.git / commitdiff