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.partition.InternalPartitionService;
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.HashSet;
import java.util.Map;
import java.util.Set;
/**
* date: 19/12/13
* author: eminn
*/
public class MultipleEntryOperation extends AbstractMapOperation
implements BackupAwareOperation, PartitionAwareOperation {
private static final EntryEventType __NO_NEED_TO_FIRE_EVENT = null;
private EntryProcessor entryProcessor;
private Set<Data> keys;
MapEntrySet response;
public MultipleEntryOperation() {
}
public MultipleEntryOperation(String name, Set<Data> keys, EntryProcessor entryProcessor) {
super(name);
this.keys = keys;
this.entryProcessor = entryProcessor;
}
public void innerBeforeRun() {
final ManagedContext managedContext = getNodeEngine().getSerializationService().getManagedContext();
managedContext.initialize(entryProcessor);
}
@Override
public void run() throws Exception {
response = new MapEntrySet();
final InternalPartitionService partitionService = getNodeEngine().getPartitionService();
final RecordStore recordStore = mapService.getRecordStore(getPartitionId(), name);
final LocalMapStatsImpl mapStats = mapService.getLocalMapStatsImpl(name);
MapEntrySimple entry;
for (Data key : keys) {
if (partitionService.getPartitionId(key) != getPartitionId())
continue;
long start = System.currentTimeMillis();
Object objectKey = mapService.toObject(key);
final Map.Entry<Data, Object> mapEntry = recordStore.getMapEntry(key);
final Object valueBeforeProcess = mapEntry.getValue();
final Object valueBeforeProcessObject = mapService.toObject(valueBeforeProcess);
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>(key, dataValue));
}
EntryEventType eventType;
if (valueAfterProcess == null) {
recordStore.remove(key);
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>(key, 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, key, oldValue, value);
if (mapService.isNearCacheAndInvalidationEnabled(name)) {
mapService.invalidateAllNearCaches(name, key);
}
if (mapContainer.getWanReplicationPublisher() != null && mapContainer.getWanMergePolicy() != null) {
if (EntryEventType.REMOVED.equals(eventType)) {
mapService.publishWanReplicationRemove(name, key, Clock.currentTimeMillis());
} else {
Record record = recordStore.getRecord(key);
Data tempValue = mapService.toData(dataValue);
final SimpleEntryView entryView = mapService.createSimpleEntryView(key, tempValue, record);
mapService.publishWanReplicationUpdate(name, entryView);
}
}
}
}
}
@Override
public boolean returnsResponse() {
return true;
}
@Override
public Object getResponse() {
return response;
}
@Override
public String toString() {
return "MultipleEntryOperation{}";
}
@Override
public boolean shouldBackup() {
return entryProcessor.getBackupProcessor() != null;
}
@Override
public int getSyncBackupCount() {
return 0;
}
@Override
public int getAsyncBackupCount() {
return mapContainer.getTotalBackupCount();
}
@Override
public Operation getBackupOperation() {
EntryBackupProcessor backupProcessor = entryProcessor.getBackupProcessor();
return backupProcessor != null ? new MultipleEntryBackupOperation(name, keys, backupProcessor) : null;
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
entryProcessor = in.readObject();
int size = in.readInt();
keys = new HashSet<Data>(size);
for (int i = 0; i < size; i++) {
Data key = new Data();
key.readData(in);
keys.add(key);
}
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeObject(entryProcessor);
out.writeInt(keys.size());
for (Data key : keys) {
key.writeData(out);
}
}
private long getLatencyFrom(long begin) {
return Clock.currentTimeMillis() - begin;
}
}