/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License. You may obtain a
* copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.apache.geode.cache.client.internal;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.logging.log4j.Logger;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.client.ServerConnectivityException;
import org.apache.geode.cache.client.ServerOperationException;
import org.apache.geode.distributed.internal.ServerLocation;
import org.apache.geode.internal.Version;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.internal.cache.tier.MessageType;
import org.apache.geode.internal.cache.tier.sockets.ChunkedMessage;
import org.apache.geode.internal.cache.tier.sockets.Message;
import org.apache.geode.internal.cache.tier.sockets.Part;
import org.apache.geode.internal.cache.tier.sockets.VersionedObjectList;
import org.apache.geode.internal.logging.LogService;
/**
* Does a region getAll on a server
*
* @since GemFire 5.7
*/
public class GetAllOp {
private static final Logger logger = LogService.getLogger();
/**
* Does a region getAll on a server using connections from the given pool to communicate with the
* server.
*
* @param pool the pool to use to communicate with the server.
* @param region the name of the region to do the getAll on
* @param keys list of keys to get
* @return the map of values found by the getAll if any
*/
public static VersionedObjectList execute(ExecutablePool pool, String region, List keys,
Object callback) {
AbstractOp op = new GetAllOpImpl(region, keys, callback);
op.initMessagePart();
return ((VersionedObjectList) pool.execute(op)).setKeys(keys);
}
public static VersionedObjectList execute(ExecutablePool pool, Region region, List keys,
int retryAttempts, Object callback) {
AbstractOp op = new GetAllOpImpl(region.getFullPath(), keys, callback);
ClientMetadataService cms = ((LocalRegion) region).getCache().getClientMetadataService();
Map<ServerLocation, HashSet> serverToFilterMap = cms.getServerToFilterMap(keys, region, true);
if (serverToFilterMap == null || serverToFilterMap.isEmpty()) {
op.initMessagePart();
return ((VersionedObjectList) pool.execute(op)).setKeys(keys);
} else {
VersionedObjectList result = null;
ServerConnectivityException se = null;
List retryList = new ArrayList();
List callableTasks =
constructGetAllTasks(region.getFullPath(), serverToFilterMap, (PoolImpl) pool, callback);
Map<ServerLocation, Object> results = SingleHopClientExecutor.submitGetAll(serverToFilterMap,
callableTasks, cms, (LocalRegion) region);
for (ServerLocation server : results.keySet()) {
Object serverResult = results.get(server);
if (serverResult instanceof ServerConnectivityException) {
se = (ServerConnectivityException) serverResult;
retryList.addAll(serverToFilterMap.get(server));
} else {
if (result == null) {
result = (VersionedObjectList) serverResult;
} else {
result.addAll((VersionedObjectList) serverResult);
}
}
}
if (se != null) {
if (retryAttempts == 0) {
throw se;
} else {
VersionedObjectList retryResult =
GetAllOp.execute(pool, region.getFullPath(), retryList, callback);
if (result == null) {
result = retryResult;
} else {
result.addAll(retryResult);
}
}
}
return result;
}
}
private GetAllOp() {
// no instances allowed
}
static List constructGetAllTasks(String region,
final Map<ServerLocation, HashSet> serverToFilterMap, final PoolImpl pool,
final Object callback) {
final List<SingleHopOperationCallable> tasks = new ArrayList<SingleHopOperationCallable>();
ArrayList<ServerLocation> servers = new ArrayList<ServerLocation>(serverToFilterMap.keySet());
if (logger.isDebugEnabled()) {
logger.debug("Constructing tasks for the servers {}", servers);
}
for (ServerLocation server : servers) {
Set filterSet = serverToFilterMap.get(server);
AbstractOp getAllOp = new GetAllOpImpl(region, new ArrayList(filterSet), callback);
SingleHopOperationCallable task =
new SingleHopOperationCallable(new ServerLocation(server.getHostName(), server.getPort()),
pool, getAllOp, UserAttributes.userAttributes.get());
tasks.add(task);
}
return tasks;
}
static class GetAllOpImpl extends AbstractOp {
private List keyList;
private final Object callback;
/**
* @throws org.apache.geode.SerializationException if serialization fails
*/
public GetAllOpImpl(String region, List keys, Object callback) {
super(callback != null ? MessageType.GET_ALL_WITH_CALLBACK : MessageType.GET_ALL_70, 3);
this.keyList = keys;
this.callback = callback;
getMessage().addStringPart(region);
}
@Override
protected void initMessagePart() {
Object[] keysArray = new Object[this.keyList.size()];
this.keyList.toArray(keysArray);
getMessage().addObjPart(keysArray);
if (this.callback != null) {
getMessage().addObjPart(this.callback);
} else {
// using the old GET_ALL_70 command that expects an int saying we are not register interest
getMessage().addIntPart(0);
}
}
public List getKeyList() {
return this.keyList;
}
@Override
protected Message createResponseMessage() {
return new ChunkedMessage(1, Version.CURRENT);
}
@Override
protected Object processResponse(Message msg) throws Exception {
throw new UnsupportedOperationException();
}
@Override
protected Object processResponse(Message msg, final Connection con) throws Exception {
final VersionedObjectList result = new VersionedObjectList(false);
final Exception[] exceptionRef = new Exception[1];
processChunkedResponse((ChunkedMessage) msg, "getAll", new ChunkHandler() {
public void handle(ChunkedMessage cm) throws Exception {
Part part = cm.getPart(0);
try {
Object o = part.getObject();
if (o instanceof Throwable) {
String s = "While performing a remote getAll";
exceptionRef[0] = new ServerOperationException(s, (Throwable) o);
} else {
VersionedObjectList chunk = (VersionedObjectList) o;
chunk.replaceNullIDs(con.getEndpoint().getMemberId());
result.addAll(chunk);
}
} catch (Exception e) {
exceptionRef[0] = new ServerOperationException("Unable to deserialize value", e);
}
}
});
if (exceptionRef[0] != null) {
throw exceptionRef[0];
} else {
return result;
}
}
@Override
protected boolean isErrorResponse(int msgType) {
return msgType == MessageType.GET_ALL_DATA_ERROR;
}
@Override
protected long startAttempt(ConnectionStats stats) {
return stats.startGetAll();
}
@Override
protected void endSendAttempt(ConnectionStats stats, long start) {
stats.endGetAllSend(start, hasFailed());
}
@Override
protected void endAttempt(ConnectionStats stats, long start) {
stats.endGetAll(start, hasTimedOut(), hasFailed());
}
}
}