/*
* 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.cache.impl.operation;
import com.hazelcast.cache.impl.CacheDataSerializerHook;
import com.hazelcast.cache.impl.CacheEventHandler;
import com.hazelcast.cache.impl.CacheService;
import com.hazelcast.internal.nearcache.impl.invalidation.MetaDataGenerator;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.IdentifiedDataSerializable;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.ReadonlyOperation;
import com.hazelcast.spi.partition.IPartitionService;
import java.io.IOException;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import static com.hazelcast.cache.impl.CacheDataSerializerHook.CACHE_INVALIDATION_METADATA;
import static com.hazelcast.cache.impl.CacheDataSerializerHook.CACHE_INVALIDATION_METADATA_RESPONSE;
import static com.hazelcast.util.CollectionUtil.isNotEmpty;
import static com.hazelcast.util.Preconditions.checkTrue;
public class CacheGetInvalidationMetaDataOperation extends Operation implements IdentifiedDataSerializable, ReadonlyOperation {
private List<String> names;
private MetaDataResponse response;
public CacheGetInvalidationMetaDataOperation() {
}
public CacheGetInvalidationMetaDataOperation(List<String> names) {
checkTrue(isNotEmpty(names), "names cannot be null or empty");
this.names = names;
}
@Override
public String getServiceName() {
return CacheService.SERVICE_NAME;
}
@Override
public void run() {
List<Integer> ownedPartitions = getOwnedPartitions();
response = new MetaDataResponse();
response.partitionUuidList = getPartitionUuidList(ownedPartitions);
response.namePartitionSequenceList = getNamePartitionSequenceList(ownedPartitions);
}
public static class MetaDataResponse implements IdentifiedDataSerializable {
/**
* map of map-name, partition to sequence mapping list
*/
private Map<String, List<Map.Entry<Integer, Long>>> namePartitionSequenceList;
/**
* map of partition id and UUID
*/
private Map<Integer, UUID> partitionUuidList;
public Map<String, List<Map.Entry<Integer, Long>>> getNamePartitionSequenceList() {
return namePartitionSequenceList;
}
public Map<Integer, UUID> getPartitionUuidList() {
return partitionUuidList;
}
@Override
public int getFactoryId() {
return CacheDataSerializerHook.F_ID;
}
@Override
public int getId() {
return CACHE_INVALIDATION_METADATA_RESPONSE;
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeInt(namePartitionSequenceList.size());
for (Map.Entry<String, List<Map.Entry<Integer, Long>>> entry : namePartitionSequenceList.entrySet()) {
out.writeUTF(entry.getKey());
out.writeInt(entry.getValue().size());
for (Map.Entry<Integer, Long> seqEntry : entry.getValue()) {
out.writeInt(seqEntry.getKey());
out.writeLong(seqEntry.getValue());
}
}
out.writeInt(partitionUuidList.size());
for (Map.Entry<Integer, UUID> entry : partitionUuidList.entrySet()) {
out.writeInt(entry.getKey());
out.writeLong(entry.getValue().getMostSignificantBits());
out.writeLong(entry.getValue().getLeastSignificantBits());
}
}
@Override
public void readData(ObjectDataInput in) throws IOException {
int size1 = in.readInt();
namePartitionSequenceList = new HashMap<String, List<Map.Entry<Integer, Long>>>(size1);
for (int i = 0; i < size1; i++) {
String name = in.readUTF();
int size2 = in.readInt();
List<Map.Entry<Integer, Long>> innerList = new ArrayList<Map.Entry<Integer, Long>>(size2);
for (int j = 0; j < size2; j++) {
int partition = in.readInt();
long seq = in.readLong();
innerList.add(new AbstractMap.SimpleEntry<Integer, Long>(partition, seq));
}
namePartitionSequenceList.put(name, innerList);
}
int size3 = in.readInt();
partitionUuidList = new HashMap<Integer, UUID>(size3);
for (int i = 0; i < size3; i++) {
int partition = in.readInt();
UUID uuid = new UUID(in.readLong(), in.readLong());
partitionUuidList.put(partition, uuid);
}
}
}
private Map<String, List<Map.Entry<Integer, Long>>> getNamePartitionSequenceList(List<Integer> ownedPartitionIds) {
MetaDataGenerator metaDataGenerator = getPartitionMetaDataGenerator();
Map<String, List<Map.Entry<Integer, Long>>> sequences = new HashMap<String, List<Map.Entry<Integer, Long>>>(
ownedPartitionIds.size());
for (String name : names) {
List<Map.Entry<Integer, Long>> mapSequences = new ArrayList<Map.Entry<Integer, Long>>();
for (Integer partitionId : ownedPartitionIds) {
long partitionSequence = metaDataGenerator.currentSequence(name, partitionId);
if (partitionSequence != 0) {
mapSequences.add(new AbstractMap.SimpleEntry<Integer, Long>(partitionId, partitionSequence));
}
}
sequences.put(name, mapSequences);
}
return sequences;
}
private Map<Integer, UUID> getPartitionUuidList(List<Integer> ownedPartitionIds) {
MetaDataGenerator metaDataGenerator = getPartitionMetaDataGenerator();
Map<Integer, UUID> partitionUuids = new HashMap<Integer, UUID>(ownedPartitionIds.size());
for (Integer partitionId : ownedPartitionIds) {
UUID uuid = metaDataGenerator.getUuidOrNull(partitionId);
if (uuid != null) {
partitionUuids.put(partitionId, uuid);
}
}
return partitionUuids;
}
private List<Integer> getOwnedPartitions() {
List<Integer> ownedPartitions = new ArrayList<Integer>();
IPartitionService partitionService = getNodeEngine().getPartitionService();
for (int i = 0; i < partitionService.getPartitionCount(); i++) {
if (partitionService.isPartitionOwner(i)) {
ownedPartitions.add(i);
}
}
return ownedPartitions;
}
private MetaDataGenerator getPartitionMetaDataGenerator() {
CacheService cacheService = getService();
CacheEventHandler cacheEventHandler = cacheService.getCacheEventHandler();
return cacheEventHandler.getMetaDataGenerator();
}
@Override
public Object getResponse() {
return response;
}
@Override
public void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeInt(names.size());
for (String mapName : names) {
out.writeUTF(mapName);
}
}
@Override
public void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
int size = in.readInt();
List<String> mapNames = new ArrayList<String>(size);
for (int i = 0; i < size; i++) {
mapNames.add(in.readUTF());
}
this.names = mapNames;
}
@Override
public int getFactoryId() {
return CacheDataSerializerHook.F_ID;
}
@Override
public int getId() {
return CACHE_INVALIDATION_METADATA;
}
}