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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.
*/
package org.apache.geode.cache.client.internal;
import org.apache.geode.DataSerializer;
import org.apache.geode.InternalGemFireError;
import org.apache.geode.cache.Operation;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.client.AllConnectionsInUseException;
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.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.cache.CachedDeserializable;
import org.apache.geode.internal.cache.EntryEventImpl;
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.versions.VersionTag;
import org.apache.geode.internal.logging.LogService;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import org.apache.logging.log4j.Logger;
/**
* Does a region put (or create) on a server
*
* @since GemFire 5.7
*/
public class PutOp {
private static final Logger logger = LogService.getLogger();
/**
* Does a region put 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 region to do the put on
* @param key the entry key to do the put on
* @param value the entry value to put
* @param event the event for this put
* @param requireOldValue
* @param expectedOldValue
* @param callbackArg an optional callback arg to pass to any cache callbacks
*/
public static Object execute(ExecutablePool pool, LocalRegion region, Object key, Object value,
byte[] deltaBytes, EntryEventImpl event, Operation operation, boolean requireOldValue,
Object expectedOldValue, Object callbackArg, boolean prSingleHopEnabled) {
PutOpImpl op = new PutOpImpl(region, key, value, deltaBytes, event, operation, requireOldValue,
expectedOldValue, callbackArg, false/* donot send full obj; send delta */,
prSingleHopEnabled);
if (prSingleHopEnabled) {
ClientMetadataService cms = region.getCache().getClientMetadataService();
ServerLocation server =
cms.getBucketServerLocation(region, Operation.UPDATE, key, value, callbackArg);
if (server != null) {
try {
PoolImpl poolImpl = (PoolImpl) pool;
boolean onlyUseExistingCnx = ((poolImpl.getMaxConnections() != -1
&& poolImpl.getConnectionCount() >= poolImpl.getMaxConnections()) ? true : false);
op.setAllowDuplicateMetadataRefresh(!onlyUseExistingCnx);
return pool.executeOn(new ServerLocation(server.getHostName(), server.getPort()), op,
true, onlyUseExistingCnx);
} catch (AllConnectionsInUseException e) {
} catch (ServerConnectivityException e) {
if (e instanceof ServerOperationException) {
throw e; // fixed 44656
}
cms.removeBucketServerLocation(server);
}
}
}
return pool.execute(op);
}
public static Object execute(ExecutablePool pool, String regionName, Object key, Object value,
byte[] deltaBytes, EntryEventImpl event, Operation operation, boolean requireOldValue,
Object expectedOldValue, Object callbackArg, boolean prSingleHopEnabled,
boolean isMetaRegionPutOp) {
AbstractOp op = new PutOpImpl(regionName, key, value, deltaBytes, event, operation,
requireOldValue, expectedOldValue, callbackArg, false/* donot send full obj; send delta */,
prSingleHopEnabled);
((PutOpImpl) op).setMetaRegionPutOp(isMetaRegionPutOp);
return pool.execute(op);
}
/**
* This is a unit test method. It does a region put on a server using the given connection from
* the given pool to communicate with the server. Do not call this method if the value is Delta
* instance.
*
* @param con the connection to use
* @param pool the pool to use to communicate with the server.
* @param regionName the name of the region to do the put on
* @param key the entry key to do the put on
* @param value the entry value to put
* @param event the event for this put
* @param callbackArg an optional callback arg to pass to any cache callbacks
*/
public static void execute(Connection con, ExecutablePool pool, String regionName, Object key,
Object value, EntryEventImpl event, Object callbackArg, boolean prSingleHopEnabled) {
AbstractOp op = new PutOpImpl(regionName, key, value, null, event, Operation.CREATE, false,
null, callbackArg, false /* donot send full Obj; send delta */, prSingleHopEnabled);
pool.executeOn(con, op);
}
public static final byte HAS_OLD_VALUE_FLAG = 0x01;
public static final byte OLD_VALUE_IS_OBJECT_FLAG = 0x02;
public static final byte HAS_VERSION_TAG = 0x04;
private PutOp() {
// no instances allowed
}
private static class PutOpImpl extends AbstractOp {
private Object key;
private LocalRegion region;
/**
* the operation will have either a region or a regionName. Names seem to be used by unit tests
* to exercise operations without creating a real region
*/
private String regionName;
private Object value;
private boolean deltaSent = false;
private EntryEventImpl event;
private Object callbackArg;
private boolean isMetaRegionPutOp;
private boolean prSingleHopEnabled;
private boolean requireOldValue;
private Object expectedOldValue;
public PutOpImpl(String regionName, Object key, Object value, byte[] deltaBytes,
EntryEventImpl event, Operation op, boolean requireOldValue, Object expectedOldValue,
Object callbackArg, boolean sendFullObj, boolean prSingleHopEnabled) {
super(MessageType.PUT,
7 + (callbackArg != null ? 1 : 0) + (expectedOldValue != null ? 1 : 0));
final boolean isDebugEnabled = logger.isDebugEnabled();
if (isDebugEnabled) {
logger.debug("PutOpImpl constructing(1) message for {}; operation={}", event.getEventId(),
op);
}
this.key = key;
this.callbackArg = callbackArg;
this.event = event;
this.value = value;
this.regionName = regionName;
this.prSingleHopEnabled = prSingleHopEnabled;
this.requireOldValue = requireOldValue;
this.expectedOldValue = expectedOldValue;
getMessage().addStringPart(regionName);
getMessage().addObjPart(op);
int flags = 0;
if (requireOldValue)
flags |= 0x01;
if (expectedOldValue != null)
flags |= 0x02;
getMessage().addIntPart(flags);
if (expectedOldValue != null) {
getMessage().addObjPart(expectedOldValue);
}
getMessage().addStringOrObjPart(key);
// Add message part for sending either delta or full value
if (!sendFullObj && deltaBytes != null && op == Operation.UPDATE) {
getMessage().addObjPart(Boolean.TRUE);
getMessage().addBytesPart(deltaBytes);
this.deltaSent = true;
if (isDebugEnabled) {
logger.debug("PutOp: Sending delta for key {}", this.key);
}
} else if (value instanceof CachedDeserializable) {
CachedDeserializable cd = (CachedDeserializable) value;
if (!cd.isSerialized()) {
// it is a byte[]
getMessage().addObjPart(Boolean.FALSE);
getMessage().addObjPart(cd.getDeserializedForReading());
} else {
getMessage().addObjPart(Boolean.FALSE);
Object cdValue = cd.getValue();
if (cdValue instanceof byte[]) {
getMessage().addRawPart((byte[]) cdValue, true);
} else {
getMessage().addObjPart(cdValue);
}
}
} else {
getMessage().addObjPart(Boolean.FALSE);
getMessage().addObjPart(value);
}
getMessage().addBytesPart(event.getEventId().calcBytes());
if (callbackArg != null) {
getMessage().addObjPart(callbackArg);
}
}
public PutOpImpl(Region region, Object key, Object value, byte[] deltaBytes,
EntryEventImpl event, Operation op, boolean requireOldValue, Object expectedOldValue,
Object callbackArg, boolean sendFullObj, boolean prSingleHopEnabled) {
super(MessageType.PUT,
7 + (callbackArg != null ? 1 : 0) + (expectedOldValue != null ? 1 : 0));
this.key = key;
this.callbackArg = callbackArg;
this.event = event;
this.value = value;
this.region = (LocalRegion) region;
this.regionName = region.getFullPath();
this.prSingleHopEnabled = prSingleHopEnabled;
final boolean isDebugEnabled = logger.isDebugEnabled();
if (isDebugEnabled) {
logger.debug("PutOpImpl constructing message with operation={}", op);
}
getMessage().addStringPart(region.getFullPath());
getMessage().addObjPart(op);
int flags = 0;
if (requireOldValue)
flags |= 0x01;
if (expectedOldValue != null)
flags |= 0x02;
getMessage().addIntPart(flags);
if (expectedOldValue != null) {
getMessage().addObjPart(expectedOldValue);
}
getMessage().addStringOrObjPart(key);
// Add message part for sending either delta or full value
if (!sendFullObj && deltaBytes != null && op == Operation.UPDATE) {
getMessage().addObjPart(Boolean.TRUE);
getMessage().addBytesPart(deltaBytes);
this.deltaSent = true;
if (isDebugEnabled) {
logger.debug("PutOp: Sending delta for key {}", this.key);
}
} else if (value instanceof CachedDeserializable) {
CachedDeserializable cd = (CachedDeserializable) value;
if (!cd.isSerialized()) {
// it is a byte[]
getMessage().addObjPart(Boolean.FALSE);
getMessage().addObjPart(cd.getDeserializedForReading());
} else {
getMessage().addObjPart(Boolean.FALSE);
Object cdValue = cd.getValue();
if (cdValue instanceof byte[]) {
getMessage().addRawPart((byte[]) cdValue, true);
} else {
getMessage().addObjPart(cdValue);
}
}
} else {
getMessage().addObjPart(Boolean.FALSE);
getMessage().addObjPart(value);
}
getMessage().addBytesPart(event.getEventId().calcBytes());
if (callbackArg != null) {
getMessage().addObjPart(callbackArg);
}
}
@Override
protected Object processResponse(Message msg) throws Exception {
throw new UnsupportedOperationException(
"processResponse should not be invoked in PutOp. Use processResponse(Message, Connection)");
}
/*
* Process a response that contains an ack.
*
* @param msg the message containing the response
*
* @param con Connection on which this op is executing
*
* @throws Exception if response could not be processed or we received a response with a server
* exception.
*
* @since GemFire 6.1
*/
@Override
protected Object processResponse(Message msg, Connection con) throws Exception {
processAck(msg, "put", con);
if (prSingleHopEnabled) {
Part part = msg.getPart(0);
byte[] bytesReceived = part.getSerializedForm();
if (bytesReceived[0] != ClientMetadataService.INITIAL_VERSION
&& bytesReceived.length == ClientMetadataService.SIZE_BYTES_ARRAY_RECEIVED) {
if (this.region != null) {
ClientMetadataService cms = region.getCache().getClientMetadataService();
byte myVersion =
cms.getMetaDataVersion(region, Operation.UPDATE, key, value, callbackArg);
if (myVersion != bytesReceived[0] || isAllowDuplicateMetadataRefresh()) {
cms.scheduleGetPRMetaData(region, false, bytesReceived[1]);
}
}
}
}
if (msg.getMessageType() == MessageType.REPLY && msg.getNumberOfParts() > 1) {
int flags = msg.getPart(1).getInt();
int partIdx = 2;
Object oldValue = null;
if ((flags & HAS_OLD_VALUE_FLAG) != 0) {
oldValue = msg.getPart(partIdx++).getObject();
if ((flags & OLD_VALUE_IS_OBJECT_FLAG) != 0 && oldValue instanceof byte[]) {
ByteArrayInputStream in = new ByteArrayInputStream((byte[]) oldValue);
DataInputStream din = new DataInputStream(in);
oldValue = DataSerializer.readObject(din);
}
// if (lw.fineEnabled()) {
// lw.fine("read old value from server response: " + oldValue);
// }
}
// if the server has versioning we will attach it to the client's event
// here so it can be applied to the cache
if ((flags & HAS_VERSION_TAG) != 0) {
VersionTag tag = (VersionTag) msg.getPart(partIdx++).getObject();
// we use the client's ID since we apparently don't track the server's ID in connections
tag.replaceNullIDs((InternalDistributedMember) con.getEndpoint().getMemberId());
this.event.setVersionTag(tag);
}
return oldValue;
}
return null;
}
/**
* Process a response that contains an ack.
*
* @param msg the message containing the response
* @param opName text describing this op
* @param con Connection on which this op is executing
* @throws Exception if response could not be processed or we received a response with a server
* exception.
* @since GemFire 6.1
*/
private final void processAck(Message msg, String opName, Connection con) throws Exception {
final int msgType = msg.getMessageType();
// Update delta stats
if (this.deltaSent && this.region != null) {
this.region.getCachePerfStats().incDeltasSent();
}
if (msgType == MessageType.REPLY) {
return;
} else {
Part part = msg.getPart(0);
if (msgType == MessageType.PUT_DELTA_ERROR) {
if (logger.isDebugEnabled()) {
logger.debug("PutOp: Sending full value as delta failed on server...");
}
AbstractOp op = new PutOpImpl(this.regionName, this.key, this.value, null, this.event,
Operation.CREATE, this.requireOldValue, this.expectedOldValue, this.callbackArg,
true /* send full obj */, this.prSingleHopEnabled);
op.attempt(con);
if (this.region != null) {
this.region.getCachePerfStats().incDeltaFullValuesSent();
}
} else if (msgType == MessageType.EXCEPTION) {
String s = ": While performing a remote " + opName;
throw new ServerOperationException(s, (Throwable) part.getObject());
// Get the exception toString part.
// This was added for c++ thin client and not used in java
// Part exceptionToStringPart = msg.getPart(1);
} else if (isErrorResponse(msgType)) {
throw new ServerOperationException(part.getString());
} else {
throw new InternalGemFireError(
"Unexpected message type " + MessageType.getString(msgType));
}
}
}
@Override
protected void sendMessage(Connection cnx) throws Exception {
if (!this.isMetaRegionPutOp) {
super.sendMessage(cnx);
} else {
getMessage().send(false);
}
}
@Override
protected void processSecureBytes(Connection cnx, Message message) throws Exception {
if (!this.isMetaRegionPutOp) {
super.processSecureBytes(cnx, message);
}
}
@Override
protected boolean needsUserId() {
boolean ret = this.isMetaRegionPutOp ? false : super.needsUserId();
return ret;
}
@Override
protected boolean isErrorResponse(int msgType) {
return msgType == MessageType.PUT_DATA_ERROR;
}
@Override
protected long startAttempt(ConnectionStats stats) {
return stats.startPut();
}
@Override
protected void endSendAttempt(ConnectionStats stats, long start) {
stats.endPutSend(start, hasFailed());
}
@Override
protected void endAttempt(ConnectionStats stats, long start) {
stats.endPut(start, hasTimedOut(), hasFailed());
}
@Override
public String toString() {
return "PutOp:" + key;
}
/**
* Attempts to read a response to this operation by reading it from the given connection, and
* returning it.
*
* @param cnx the connection to read the response from
* @return the result of the operation or null