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Kubernetes Service Discovery for Hazelcast Discovery SPI
/*
* Copyright (c) 2008-2019, 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;
import com.hazelcast.cache.impl.event.CachePartitionLostEventFilter;
import com.hazelcast.cache.impl.event.CachePartitionLostListener;
import com.hazelcast.cache.impl.event.InternalCachePartitionLostListenerAdapter;
import com.hazelcast.cache.impl.journal.CacheEventJournalReadOperation;
import com.hazelcast.cache.impl.journal.CacheEventJournalSubscribeOperation;
import com.hazelcast.cache.impl.operation.CacheListenerRegistrationOperation;
import com.hazelcast.cache.journal.EventJournalCacheEvent;
import com.hazelcast.config.CacheConfig;
import com.hazelcast.core.ICompletableFuture;
import com.hazelcast.core.Member;
import com.hazelcast.internal.journal.EventJournalInitialSubscriberState;
import com.hazelcast.internal.journal.EventJournalReader;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.ringbuffer.ReadResultSet;
import com.hazelcast.spi.EventFilter;
import com.hazelcast.spi.EventRegistration;
import com.hazelcast.spi.InternalCompletableFuture;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.OperationService;
import com.hazelcast.util.function.Function;
import com.hazelcast.util.function.Predicate;
import javax.cache.CacheException;
import javax.cache.configuration.CacheEntryListenerConfiguration;
import javax.cache.configuration.Configuration;
import javax.cache.expiry.ExpiryPolicy;
import javax.cache.integration.CompletionListener;
import javax.cache.processor.EntryProcessor;
import javax.cache.processor.EntryProcessorException;
import javax.cache.processor.EntryProcessorResult;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import static com.hazelcast.cache.impl.CacheProxyUtil.validateNotNull;
import static com.hazelcast.util.ExceptionUtil.rethrowAllowedTypeFirst;
import static com.hazelcast.util.MapUtil.createHashMap;
import static com.hazelcast.util.Preconditions.checkNotNull;
import static com.hazelcast.util.SetUtil.createHashSet;
/**
* ICache implementation
*
* This proxy is the implementation of ICache and javax.cache.Cache which is returned by
* HazelcastServerCacheManager. It represents a cache for server or embedded mode.
*
*
* Each cache method actually is an operation which is sent to related partition(s) or node(s).
* Operations are executed on partition's or node's executor pools and the results are delivered to the user.
*
*
* In order to access a {@linkplain CacheProxy} by name, a cacheManager should be used. It's advised to use
* {@link com.hazelcast.cache.ICache} instead.
*
*
* @param the type of key.
* @param the type of value.
*/
@SuppressWarnings({"checkstyle:methodcount", "checkstyle:classfanoutcomplexity"})
public class CacheProxy extends AbstractCacheProxy
implements EventJournalReader> {
CacheProxy(CacheConfig cacheConfig, NodeEngine nodeEngine, ICacheService cacheService) {
super(cacheConfig, nodeEngine, cacheService);
}
@Override
public V get(K key) {
return get(key, null);
}
@Override
public Map getAll(Set keys) {
return getAll(keys, null);
}
@Override
public boolean containsKey(K key) {
ensureOpen();
validateNotNull(key);
Data dataKey = serializationService.toData(key);
Operation operation = operationProvider.createContainsKeyOperation(dataKey);
OperationService operationService = getNodeEngine().getOperationService();
int partitionId = getPartitionId(dataKey);
InternalCompletableFuture future = operationService.invokeOnPartition(getServiceName(), operation, partitionId);
return future.join();
}
@Override
public void loadAll(Set keys, boolean replaceExistingValues, CompletionListener completionListener) {
ensureOpen();
validateNotNull(keys);
for (K key : keys) {
CacheProxyUtil.validateConfiguredTypes(cacheConfig, key);
}
Set keysData = createHashSet(keys.size());
for (K key : keys) {
validateNotNull(key);
keysData.add(serializationService.toData(key));
}
LoadAllTask loadAllTask = new LoadAllTask(operationProvider, keysData, replaceExistingValues, completionListener);
try {
submitLoadAllTask(loadAllTask);
} catch (Exception e) {
if (completionListener != null) {
completionListener.onException(e);
}
throw new CacheException(e);
}
}
@Override
public void put(K key, V value) {
put(key, value, null);
}
@Override
public V getAndPut(K key, V value) {
return getAndPut(key, value, null);
}
@Override
public void putAll(Map map) {
putAll(map, null);
}
@Override
public boolean putIfAbsent(K key, V value) {
return putIfAbsent(key, value, null);
}
@Override
public boolean remove(K key) {
try {
InternalCompletableFuture future = removeAsyncInternal(key, null, false, false, true);
return future.get();
} catch (Throwable e) {
throw rethrowAllowedTypeFirst(e, CacheException.class);
}
}
@Override
public boolean remove(K key, V oldValue) {
try {
InternalCompletableFuture future = removeAsyncInternal(key, oldValue, true, false, true);
return future.get();
} catch (Throwable e) {
throw rethrowAllowedTypeFirst(e, CacheException.class);
}
}
@Override
public V getAndRemove(K key) {
try {
InternalCompletableFuture future = removeAsyncInternal(key, null, false, true, true);
return future.get();
} catch (Throwable e) {
throw rethrowAllowedTypeFirst(e, CacheException.class);
}
}
@Override
public boolean replace(K key, V oldValue, V newValue) {
return replace(key, oldValue, newValue, null);
}
@Override
public boolean replace(K key, V value) {
return replace(key, value, (ExpiryPolicy) null);
}
@Override
public V getAndReplace(K key, V value) {
return getAndReplace(key, value, null);
}
@Override
public void removeAll(Set keys) {
ensureOpen();
validateNotNull(keys);
if (keys.isEmpty()) {
return;
}
removeAllInternal(keys);
}
@Override
public void removeAll() {
ensureOpen();
removeAllInternal(null);
}
@Override
public void clear() {
ensureOpen();
clearInternal();
}
@Override
public > C getConfiguration(Class clazz) {
if (clazz.isInstance(cacheConfig)) {
return clazz.cast(cacheConfig.getAsReadOnly());
}
throw new IllegalArgumentException("The configuration class " + clazz + " is not supported by this implementation");
}
@Override
public T invoke(K key, EntryProcessor entryProcessor, Object... arguments) throws EntryProcessorException {
ensureOpen();
validateNotNull(key);
checkNotNull(entryProcessor, "Entry Processor is null");
Data keyData = serializationService.toData(key);
Integer completionId = registerCompletionLatch(1);
Operation op = operationProvider.createEntryProcessorOperation(keyData, completionId, entryProcessor, arguments);
try {
OperationService operationService = getNodeEngine().getOperationService();
int partitionId = getPartitionId(keyData);
InternalCompletableFuture future = operationService.invokeOnPartition(getServiceName(), op, partitionId);
T safely = future.join();
waitCompletionLatch(completionId);
return safely;
} catch (CacheException ce) {
deregisterCompletionLatch(completionId);
throw ce;
} catch (Exception e) {
deregisterCompletionLatch(completionId);
throw new EntryProcessorException(e);
}
}
@Override
public Map> invokeAll(Set keys, EntryProcessor entryProcessor,
Object... arguments) {
// TODO: implement a multiple (batch) invoke operation and its factory
ensureOpen();
validateNotNull(keys);
checkNotNull(entryProcessor, "Entry Processor is null");
Map> allResult = createHashMap(keys.size());
for (K key : keys) {
validateNotNull(key);
CacheEntryProcessorResult ceResult;
try {
T result = invoke(key, entryProcessor, arguments);
ceResult = result != null ? new CacheEntryProcessorResult(result) : null;
} catch (Exception e) {
ceResult = new CacheEntryProcessorResult(e);
}
if (ceResult != null) {
allResult.put(key, ceResult);
}
}
return allResult;
}
@Override
public T unwrap(Class clazz) {
if (clazz.isAssignableFrom(((Object) this).getClass())) {
return clazz.cast(this);
}
throw new IllegalArgumentException("Unwrapping to " + clazz + " is not supported by this implementation");
}
@Override
public void registerCacheEntryListener(CacheEntryListenerConfiguration cacheEntryListenerConfiguration) {
registerCacheEntryListener(cacheEntryListenerConfiguration, true);
}
@Override
public void registerCacheEntryListener(CacheEntryListenerConfiguration cacheEntryListenerConfiguration,
boolean addToConfig) {
ensureOpen();
checkNotNull(cacheEntryListenerConfiguration, "CacheEntryListenerConfiguration can't be null");
CacheEventListenerAdaptor entryListener = new CacheEventListenerAdaptor(this,
cacheEntryListenerConfiguration,
getNodeEngine().getSerializationService());
String regId = getService().registerListener(getDistributedObjectName(), entryListener, entryListener, false);
if (regId != null) {
if (addToConfig) {
cacheConfig.addCacheEntryListenerConfiguration(cacheEntryListenerConfiguration);
}
addListenerLocally(regId, cacheEntryListenerConfiguration);
if (addToConfig) {
updateCacheListenerConfigOnOtherNodes(cacheEntryListenerConfiguration, true);
}
}
}
@Override
public void deregisterCacheEntryListener(CacheEntryListenerConfiguration cacheEntryListenerConfiguration) {
checkNotNull(cacheEntryListenerConfiguration, "CacheEntryListenerConfiguration can't be null");
String regId = getListenerIdLocal(cacheEntryListenerConfiguration);
if (regId != null) {
if (getService().deregisterListener(getDistributedObjectName(), regId)) {
removeListenerLocally(cacheEntryListenerConfiguration);
cacheConfig.removeCacheEntryListenerConfiguration(cacheEntryListenerConfiguration);
updateCacheListenerConfigOnOtherNodes(cacheEntryListenerConfiguration, false);
}
}
}
private void updateCacheListenerConfigOnOtherNodes(CacheEntryListenerConfiguration cacheEntryListenerConfiguration,
boolean isRegister) {
OperationService operationService = getNodeEngine().getOperationService();
Collection members = getNodeEngine().getClusterService().getMembers();
for (Member member : members) {
if (!member.localMember()) {
Operation op = new CacheListenerRegistrationOperation(getDistributedObjectName(), cacheEntryListenerConfiguration,
isRegister);
operationService.invokeOnTarget(CacheService.SERVICE_NAME, op, member.getAddress());
}
}
}
@Override
public Iterator> iterator() {
ensureOpen();
return new ClusterWideIterator(this, false);
}
@Override
public Iterator> iterator(int fetchSize) {
ensureOpen();
return new ClusterWideIterator(this, fetchSize, false);
}
@Override
public Iterator> iterator(int fetchSize, int partitionId, boolean prefetchValues) {
ensureOpen();
return new CachePartitionIterator(this, fetchSize, partitionId, prefetchValues);
}
@Override
public String addPartitionLostListener(CachePartitionLostListener listener) {
checkNotNull(listener, "CachePartitionLostListener can't be null");
EventFilter filter = new CachePartitionLostEventFilter();
InternalCachePartitionLostListenerAdapter listenerAdapter = new InternalCachePartitionLostListenerAdapter(listener);
injectDependencies(listener);
EventRegistration registration = getService().getNodeEngine().getEventService()
.registerListener(AbstractCacheService.SERVICE_NAME, name, filter, listenerAdapter);
return registration.getId();
}
@Override
public boolean removePartitionLostListener(String id) {
checkNotNull(id, "Listener ID should not be null!");
return getService().getNodeEngine().getEventService()
.deregisterListener(AbstractCacheService.SERVICE_NAME, name, id);
}
@Override
public ICompletableFuture subscribeToEventJournal(int partitionId) {
final CacheEventJournalSubscribeOperation op = new CacheEventJournalSubscribeOperation(nameWithPrefix);
op.setPartitionId(partitionId);
return getNodeEngine().getOperationService().invokeOnPartition(op);
}
@Override
public ICompletableFuture> readFromEventJournal(
long startSequence,
int minSize,
int maxSize,
int partitionId,
Predicate> predicate,
Function, ? extends T> projection
) {
if (maxSize < minSize) {
throw new IllegalArgumentException("maxSize " + maxSize
+ " must be greater or equal to minSize " + minSize);
}
final CacheEventJournalReadOperation op = new CacheEventJournalReadOperation(
nameWithPrefix, startSequence, minSize, maxSize, predicate, projection);
op.setPartitionId(partitionId);
return getNodeEngine().getOperationService().invokeOnPartition(op);
}
}