Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.map.impl.operation;
import com.hazelcast.concurrent.lock.LockWaitNotifyKey;
import com.hazelcast.config.InMemoryFormat;
import com.hazelcast.config.MapConfig;
import com.hazelcast.core.EntryEventType;
import com.hazelcast.core.EntryView;
import com.hazelcast.map.EntryBackupProcessor;
import com.hazelcast.map.impl.MapContainer;
import com.hazelcast.map.impl.MapDataSerializerHook;
import com.hazelcast.map.impl.MapService;
import com.hazelcast.map.impl.MapServiceContext;
import com.hazelcast.map.impl.record.Record;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.DefaultObjectNamespace;
import com.hazelcast.spi.EventService;
import com.hazelcast.spi.Notifier;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.WaitNotifyKey;
import com.hazelcast.util.Clock;
import java.io.IOException;
import static com.hazelcast.core.EntryEventType.ADDED;
import static com.hazelcast.core.EntryEventType.REMOVED;
import static com.hazelcast.core.EntryEventType.UPDATED;
import static com.hazelcast.map.impl.EntryViews.createSimpleEntryView;
import static com.hazelcast.map.impl.MapService.SERVICE_NAME;
import static com.hazelcast.map.impl.recordstore.RecordStore.DEFAULT_TTL;
/**
* Set & Unlock processing for the EntryOperation
*
* See the javadoc on {@link EntryOperation}
*/
public class EntryOffloadableSetUnlockOperation extends MutatingKeyBasedMapOperation implements BackupAwareOperation, Notifier {
protected Data value;
protected Data oldValue;
protected String caller;
protected long begin;
protected EntryEventType modificationType;
protected EntryBackupProcessor entryBackupProcessor;
public EntryOffloadableSetUnlockOperation() {
}
public EntryOffloadableSetUnlockOperation(String name, EntryEventType modificationType, Data key, Data oldValue,
Data value, String caller, long threadId, long begin,
EntryBackupProcessor entryBackupProcessor) {
super(name, key, value);
this.value = value;
this.oldValue = oldValue;
this.caller = caller;
this.begin = begin;
this.modificationType = modificationType;
this.entryBackupProcessor = entryBackupProcessor;
this.setThreadId(threadId);
}
@Override
public void run() throws Exception {
verifyLock();
try {
updateRecordStore();
} finally {
unlockKey();
}
}
private void verifyLock() {
if (!recordStore.isLockedBy(dataKey, caller, threadId)) {
// we can't send a RetryableHazelcastException explicitly since it would retry this opertation and we want to retry
// the preceding EntryOperation that this operation is part of.
throw new EntryOffloadableLockMismatchException(
String.format("The key is not locked by the caller=%s and threadId=%d", caller, threadId));
}
}
private void updateRecordStore() {
if (modificationType == null) {
return;
}
if (modificationType == REMOVED) {
recordStore.remove(dataKey);
getLocalMapStats().incrementRemoves(getLatencyFrom(begin));
} else if (modificationType == ADDED || modificationType == UPDATED) {
recordStore.set(dataKey, value, DEFAULT_TTL);
getLocalMapStats().incrementPuts(getLatencyFrom(begin));
} else {
throw new IllegalArgumentException("Unsupported event type " + modificationType);
}
}
private void unlockKey() {
boolean unlocked = recordStore.unlock(dataKey, caller, threadId, getCallId());
if (!unlocked) {
throw new IllegalStateException(
String.format("Unexpected error! EntryOffloadableSetUnlockOperation finished but the unlock method "
+ "returned false for caller=%s and threadId=%d", caller, threadId));
}
}
@Override
public void afterRun() throws Exception {
super.afterRun();
if (modificationType == null) {
return;
}
mapServiceContext.interceptAfterPut(name, value);
if (isPostProcessing(recordStore)) {
Record record = recordStore.getRecord(dataKey);
value = record == null ? null : toData(record.getValue());
}
invalidateNearCache(dataKey);
publishEntryEvent();
publishWanReplicationEvent();
evict(dataKey);
}
private void publishWanReplicationEvent() {
final MapContainer mapContainer = this.mapContainer;
if (mapContainer.getWanReplicationPublisher() == null && mapContainer.getWanMergePolicy() == null) {
return;
}
final Data key = getKey();
if (REMOVED.equals(modificationType)) {
mapEventPublisher.publishWanReplicationRemove(name, key, begin);
} else {
final Record record = recordStore.getRecord(key);
if (record != null) {
final EntryView entryView = createSimpleEntryView(key, value, record);
mapEventPublisher.publishWanReplicationUpdate(name, entryView);
}
}
}
private void publishEntryEvent() {
if (hasRegisteredListenerForThisMap()) {
nullifyOldValueIfNecessary();
mapEventPublisher.publishEvent(getCallerAddress(), name, modificationType, dataKey, oldValue, value);
}
}
private boolean hasRegisteredListenerForThisMap() {
final EventService eventService = getNodeEngine().getEventService();
return eventService.hasEventRegistration(SERVICE_NAME, name);
}
/**
* Nullify old value if in memory format is object and operation is not removal
* since old and new value in fired event {@link com.hazelcast.core.EntryEvent}
* may be same due to the object in memory format.
*/
private void nullifyOldValueIfNecessary() {
final MapConfig mapConfig = mapContainer.getMapConfig();
final InMemoryFormat format = mapConfig.getInMemoryFormat();
if (format == InMemoryFormat.OBJECT && modificationType != REMOVED) {
oldValue = null;
}
}
private Data toData(Object obj) {
final MapServiceContext mapServiceContext = mapService.getMapServiceContext();
return mapServiceContext.toData(obj);
}
private long getLatencyFrom(long begin) {
return Clock.currentTimeMillis() - begin;
}
@Override
public boolean returnsResponse() {
// this has to be true, otherwise the calling side won't be notified about the exception thrown by this operation
return true;
}
@Override
public Operation getBackupOperation() {
return entryBackupProcessor != null ? new EntryBackupOperation(name, dataKey, entryBackupProcessor) : null;
}
@Override
public boolean shouldBackup() {
return mapContainer.getTotalBackupCount() > 0 && entryBackupProcessor != null;
}
@Override
public int getAsyncBackupCount() {
return mapContainer.getAsyncBackupCount();
}
@Override
public int getSyncBackupCount() {
return mapContainer.getBackupCount();
}
@Override
public boolean shouldNotify() {
return true;
}
@Override
public WaitNotifyKey getNotifiedKey() {
return new LockWaitNotifyKey(new DefaultObjectNamespace(MapService.SERVICE_NAME, name), dataKey);
}
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public int getId() {
return MapDataSerializerHook.ENTRY_OFFLOADABLE_SET_UNLOCK;
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeUTF(modificationType != null ? modificationType.name() : "");
out.writeData(oldValue);
out.writeData(value);
out.writeUTF(caller);
out.writeLong(begin);
out.writeObject(entryBackupProcessor);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
String modificationTypeName = in.readUTF();
modificationType = modificationTypeName.equals("") ? null : EntryEventType.valueOf(modificationTypeName);
oldValue = in.readData();
value = in.readData();
caller = in.readUTF();
begin = in.readLong();
entryBackupProcessor = in.readObject();
}
}
