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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* 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.
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package org.apache.geode.internal.cache.tier.sockets.command;
import java.io.IOException;
import java.util.Iterator;
import java.util.Set;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.operations.GetOperationContext;
import org.apache.geode.cache.operations.internal.GetOperationContextImpl;
import org.apache.geode.internal.Version;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.internal.cache.tier.CachedRegionHelper;
import org.apache.geode.internal.cache.tier.Command;
import org.apache.geode.internal.cache.tier.MessageType;
import org.apache.geode.internal.cache.tier.sockets.BaseCommand;
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.ObjectPartList;
import org.apache.geode.internal.cache.tier.sockets.Part;
import org.apache.geode.internal.cache.tier.sockets.ServerConnection;
import org.apache.geode.internal.cache.tier.sockets.VersionedObjectList;
import org.apache.geode.internal.cache.versions.VersionTag;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.log4j.LocalizedMessage;
import org.apache.geode.internal.offheap.OffHeapHelper;
import org.apache.geode.internal.offheap.annotations.Retained;
import org.apache.geode.internal.security.AuthorizeRequest;
import org.apache.geode.internal.security.AuthorizeRequestPP;
import org.apache.geode.internal.security.SecurityService;
import org.apache.geode.security.NotAuthorizedException;
public class GetAll70 extends BaseCommand {
private final static GetAll70 singleton = new GetAll70();
public static Command getCommand() {
return singleton;
}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long start)
throws IOException, InterruptedException {
Part regionNamePart = null, keysPart = null;
String regionName = null;
Object[] keys = null;
servConn.setAsTrue(REQUIRES_RESPONSE);
servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
int partIdx = 0;
// Retrieve the region name from the message parts
regionNamePart = msg.getPart(partIdx++);
regionName = regionNamePart.getString();
// Retrieve the keys array from the message parts
keysPart = msg.getPart(partIdx++);
try {
keys = (Object[]) keysPart.getObject();
} catch (Exception e) {
writeChunkedException(msg, e, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
boolean requestSerializedValues;
requestSerializedValues = msg.getPart(partIdx++).getInt() == 1;
if (logger.isDebugEnabled()) {
StringBuffer buffer = new StringBuffer();
buffer.append(servConn.getName()).append(": Received getAll request (")
.append(msg.getPayloadLength()).append(" bytes) from ").append(servConn.getSocketString())
.append(" for region ").append(regionName).append(" keys ");
if (keys != null) {
for (int i = 0; i < keys.length; i++) {
buffer.append(keys[i]).append(" ");
}
} else {
buffer.append("NULL");
}
logger.debug(buffer.toString());
}
// Process the getAll request
if (regionName == null) {
String message = null;
// if (regionName == null) (can only be null)
{
message = LocalizedStrings.GetAll_THE_INPUT_REGION_NAME_FOR_THE_GETALL_REQUEST_IS_NULL
.toLocalizedString();
}
logger.warn("{}: {}", servConn.getName(), message);
writeChunkedErrorResponse(msg, MessageType.GET_ALL_DATA_ERROR, message, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
LocalRegion region = (LocalRegion) servConn.getCache().getRegion(regionName);
if (region == null) {
String reason = " was not found during getAll request";
writeRegionDestroyedEx(msg, regionName, reason, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
// Send header
ChunkedMessage chunkedResponseMsg = servConn.getChunkedResponseMessage();
chunkedResponseMsg.setMessageType(MessageType.RESPONSE);
chunkedResponseMsg.setTransactionId(msg.getTransactionId());
chunkedResponseMsg.sendHeader();
// Send chunk response
try {
fillAndSendGetAllResponseChunks(region, regionName, keys, servConn, requestSerializedValues);
servConn.setAsTrue(RESPONDED);
} catch (Exception e) {
// If an interrupted exception is thrown , rethrow it
checkForInterrupt(servConn, e);
// Otherwise, write an exception message and continue
writeChunkedException(msg, e, false, servConn);
servConn.setAsTrue(RESPONDED);
return;
}
}
private void fillAndSendGetAllResponseChunks(Region region, String regionName, Object[] keys,
ServerConnection servConn, boolean requestSerializedValues) throws IOException {
// Interpret null keys object as a request to get all key,value entry pairs
// of the region; otherwise iterate each key and perform the get behavior.
Iterator allKeysIter;
int numKeys;
if (keys != null) {
allKeysIter = null;
numKeys = keys.length;
} else {
Set allKeys = region.keySet();
allKeysIter = allKeys.iterator();
numKeys = allKeys.size();
}
// Shouldn't it be 'keys != null' below?
// The answer is no.
// Note that the current implementation of client/server getAll the "keys" will always be
// non-null.
// The server callects and returns the values in the same order as the keys it received.
// So the server does not need to send the keys back to the client.
// When the client receives the server's "values" it calls setKeys using the key list the client
// already has.
// So the only reason we would tell the VersionedObjectList that it needs to track keys is if we
// are running
// in the old mode (which may be impossible since we only used that mode pre 7.0) in which the
// client told us
// to get and return all the keys and values. I think this was used for register interest.
VersionedObjectList values = new VersionedObjectList(maximumChunkSize, keys == null,
region.getAttributes().getConcurrencyChecksEnabled(), requestSerializedValues);
try {
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
AuthorizeRequestPP postAuthzRequest = servConn.getPostAuthzRequest();
Get70 request = (Get70) Get70.getCommand();
final boolean isDebugEnabled = logger.isDebugEnabled();
for (int i = 0; i < numKeys; i++) {
// Send the intermediate chunk if necessary
if (values.size() == maximumChunkSize) {
// Send the chunk and clear the list
values.setKeys(null);
sendGetAllResponseChunk(region, values, false, servConn);
values.clear();
}
Object key;
boolean keyNotPresent = false;
if (keys != null) {
key = keys[i];
} else {
key = allKeysIter.next();
}
if (isDebugEnabled) {
logger.debug("{}: Getting value for key={}", servConn.getName(), key);
}
// Determine if the user authorized to get this key
GetOperationContext getContext = null;
if (authzRequest != null) {
try {
getContext = authzRequest.getAuthorize(regionName, key, null);
if (isDebugEnabled) {
logger.debug("{}: Passed GET pre-authorization for key={}", servConn.getName(), key);
}
} catch (NotAuthorizedException ex) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.GetAll_0_CAUGHT_THE_FOLLOWING_EXCEPTION_ATTEMPTING_TO_GET_VALUE_FOR_KEY_1,
new Object[] {servConn.getName(), key}), ex);
values.addExceptionPart(key, ex);
continue;
}
}
try {
this.securityService.authorizeRegionRead(regionName, key.toString());
} catch (NotAuthorizedException ex) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.GetAll_0_CAUGHT_THE_FOLLOWING_EXCEPTION_ATTEMPTING_TO_GET_VALUE_FOR_KEY_1,
new Object[] {servConn.getName(), key}), ex);
values.addExceptionPart(key, ex);
continue;
}
// Get the value and update the statistics. Do not deserialize
// the value if it is a byte[].
// Getting a value in serialized form is pretty nasty. I split this out
// so the logic can be re-used by the CacheClientProxy.
Get70.Entry entry = request.getEntry(region, key, null, servConn);
@Retained
final Object originalData = entry.value;
Object data = originalData;
if (logger.isDebugEnabled()) {
logger.debug("retrieved key={} {}", key, entry);
}
boolean addedToValues = false;
try {
boolean isObject = entry.isObject;
VersionTag versionTag = entry.versionTag;
keyNotPresent = entry.keyNotPresent;
if (postAuthzRequest != null) {
try {
getContext =
postAuthzRequest.getAuthorize(regionName, key, data, isObject, getContext);
GetOperationContextImpl gci = (GetOperationContextImpl) getContext;
Object newData = gci.getRawValue();
if (newData != data) {
// user changed the value
isObject = getContext.isObject();
data = newData;
}
} catch (NotAuthorizedException ex) {
logger.warn(LocalizedMessage.create(
LocalizedStrings.GetAll_0_CAUGHT_THE_FOLLOWING_EXCEPTION_ATTEMPTING_TO_GET_VALUE_FOR_KEY_1,
new Object[] {servConn.getName(), key}), ex);
values.addExceptionPart(key, ex);
continue;
} finally {
if (getContext != null) {
((GetOperationContextImpl) getContext).release();
}
}
}
data = this.securityService.postProcess(regionName, key, data, entry.isObject);
// Add the entry to the list that will be returned to the client
if (keyNotPresent) {
values.addObjectPartForAbsentKey(key, data, versionTag);
addedToValues = true;
} else {
values.addObjectPart(key, data, isObject, versionTag);
addedToValues = true;
}
} finally {
if (!addedToValues || data != originalData) {
OffHeapHelper.release(originalData);
}
}
}
// Send the last chunk even if the list is of zero size.
if (Version.GFE_701.compareTo(servConn.getClientVersion()) <= 0) {
// 7.0.1 and later clients do not expect the keys in the response
values.setKeys(null);
}
sendGetAllResponseChunk(region, values, true, servConn);
servConn.setAsTrue(RESPONDED);
} finally {
values.release();
}
}
private static void sendGetAllResponseChunk(Region region, ObjectPartList list, boolean lastChunk,
ServerConnection servConn) throws IOException {
ChunkedMessage chunkedResponseMsg = servConn.getChunkedResponseMessage();
chunkedResponseMsg.setNumberOfParts(1);
chunkedResponseMsg.setLastChunk(lastChunk);
chunkedResponseMsg.addObjPartNoCopying(list);
if (logger.isDebugEnabled()) {
logger.debug("{}: Sending {} getAll response chunk for region={}{}", servConn.getName(),
(lastChunk ? " last " : " "), region.getFullPath(), (logger.isTraceEnabled()
? " values=" + list + " chunk=<" + chunkedResponseMsg + ">" : ""));
}
chunkedResponseMsg.sendChunk(servConn);
}
}