/*
* Copyright (c) 2008-2013, 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.operation;
import com.hazelcast.core.EntryEventType;
import com.hazelcast.core.ManagedContext;
import com.hazelcast.map.EntryBackupProcessor;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.MapEntrySet;
import com.hazelcast.map.MapEntrySimple;
import com.hazelcast.map.RecordStore;
import com.hazelcast.map.SimpleEntryView;
import com.hazelcast.map.record.Record;
import com.hazelcast.monitor.impl.LocalMapStatsImpl;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.SerializationService;
import com.hazelcast.query.Predicate;
import com.hazelcast.query.impl.QueryEntry;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.PartitionAwareOperation;
import com.hazelcast.util.Clock;
import java.io.IOException;
import java.util.AbstractMap;
import java.util.Map;
/**
* GOTCHA : This operation does not load missing keys from mapstore for now.
*/
public class PartitionWideEntryOperation extends AbstractMapOperation
implements BackupAwareOperation, PartitionAwareOperation {
private static final EntryEventType __NO_NEED_TO_FIRE_EVENT = null;
EntryProcessor entryProcessor;
MapEntrySet response;
public PartitionWideEntryOperation(String name, EntryProcessor entryProcessor) {
super(name);
this.entryProcessor = entryProcessor;
}
public PartitionWideEntryOperation() {
}
public void innerBeforeRun() {
final ManagedContext managedContext = getNodeEngine().getSerializationService().getManagedContext();
managedContext.initialize(entryProcessor);
}
public void run() {
response = new MapEntrySet();
MapEntrySimple entry;
final RecordStore recordStore = mapService.getRecordStore(getPartitionId(), name);
final LocalMapStatsImpl mapStats = mapService.getLocalMapStatsImpl(name);
final Map<Data, Record> records = recordStore.getReadonlyRecordMap();
for (final Map.Entry<Data, Record> recordEntry : records.entrySet()) {
final long start = System.currentTimeMillis();
final Data dataKey = recordEntry.getKey();
final Record record = recordEntry.getValue();
final Object valueBeforeProcess = record.getValue();
final Object valueBeforeProcessObject = mapService.toObject(valueBeforeProcess);
Object objectKey = mapService.toObject(record.getKey());
if (getPredicate() != null) {
final SerializationService ss = getNodeEngine().getSerializationService();
QueryEntry queryEntry = new QueryEntry(ss, dataKey, objectKey, valueBeforeProcessObject);
if (!getPredicate().apply(queryEntry)) {
continue;
}
}
entry = new MapEntrySimple(objectKey, valueBeforeProcessObject);
final Object result = entryProcessor.process(entry);
final Object valueAfterProcess = entry.getValue();
Data dataValue = null;
if (result != null) {
dataValue = mapService.toData(result);
response.add(new AbstractMap.SimpleImmutableEntry<Data, Data>(dataKey, dataValue));
}
EntryEventType eventType;
if (valueAfterProcess == null) {
recordStore.remove(dataKey);
mapStats.incrementRemoves(getLatencyFrom(start));
eventType = EntryEventType.REMOVED;
} else {
if (valueBeforeProcessObject == null) {
mapStats.incrementPuts(getLatencyFrom(start));
eventType = EntryEventType.ADDED;
}
// take this case as a read so no need to fire an event.
else if (!entry.isModified()) {
mapStats.incrementGets(getLatencyFrom(start));
eventType = __NO_NEED_TO_FIRE_EVENT;
} else {
mapStats.incrementPuts(getLatencyFrom(start));
eventType = EntryEventType.UPDATED;
}
// todo if this is a read only operation, record access operations should be done.
if (eventType != __NO_NEED_TO_FIRE_EVENT) {
recordStore.put(new AbstractMap.SimpleImmutableEntry<Data, Object>(dataKey, valueAfterProcess));
}
}
if (eventType != __NO_NEED_TO_FIRE_EVENT) {
final Data oldValue = mapService.toData(valueBeforeProcess);
final Data value = mapService.toData(valueAfterProcess);
mapService.publishEvent(getCallerAddress(), name, eventType, dataKey, oldValue, value);
if (mapService.isNearCacheAndInvalidationEnabled(name)) {
mapService.invalidateAllNearCaches(name, dataKey);
}
if (mapContainer.getWanReplicationPublisher() != null && mapContainer.getWanMergePolicy() != null) {
if (EntryEventType.REMOVED.equals(eventType)) {
mapService.publishWanReplicationRemove(name, dataKey, Clock.currentTimeMillis());
} else {
Record r = recordStore.getRecord(dataKey);
final SimpleEntryView entryView = mapService.createSimpleEntryView(dataKey, dataValue, r);
mapService.publishWanReplicationUpdate(name, entryView);
}
}
}
}
}
@Override
public boolean returnsResponse() {
return true;
}
@Override
public Object getResponse() {
return response;
}
protected Predicate getPredicate() {
return null;
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
entryProcessor = in.readObject();
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeObject(entryProcessor);
}
@Override
public String toString() {
return "PartitionWideEntryOperation{}";
}
public boolean shouldBackup() {
return entryProcessor.getBackupProcessor() != null;
}
public int getSyncBackupCount() {
return 0;
}
public int getAsyncBackupCount() {
return mapContainer.getTotalBackupCount();
}
@Override
public Operation getBackupOperation() {
EntryBackupProcessor backupProcessor = entryProcessor.getBackupProcessor();
return backupProcessor != null ? new PartitionWideEntryBackupOperation(name, backupProcessor) : null;
}
private long getLatencyFrom(long begin) {
return Clock.currentTimeMillis() - begin;
}
}