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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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 org.apache.geode.cache.query.internal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.apache.logging.log4j.Logger;
import org.apache.geode.cache.CacheClosedException;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.client.internal.ProxyCache;
import org.apache.geode.cache.client.internal.UserAttributes;
import org.apache.geode.cache.query.CqAttributes;
import org.apache.geode.cache.query.CqException;
import org.apache.geode.cache.query.CqExistsException;
import org.apache.geode.cache.query.CqQuery;
import org.apache.geode.cache.query.CqServiceStatistics;
import org.apache.geode.cache.query.Index;
import org.apache.geode.cache.query.IndexExistsException;
import org.apache.geode.cache.query.IndexInvalidException;
import org.apache.geode.cache.query.IndexNameConflictException;
import org.apache.geode.cache.query.IndexType;
import org.apache.geode.cache.query.MultiIndexCreationException;
import org.apache.geode.cache.query.Query;
import org.apache.geode.cache.query.QueryInvalidException;
import org.apache.geode.cache.query.QueryService;
import org.apache.geode.cache.query.RegionNotFoundException;
import org.apache.geode.cache.query.internal.cq.ClientCQ;
import org.apache.geode.cache.query.internal.cq.InternalCqQuery;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.LogService;
/**
* A wrapper class over an actual QueryService instance. This is used when the
* multiuser-authentication attribute is set to true.
*
* @see ProxyCache
* @since GemFire 6.5
*/
public class ProxyQueryService implements QueryService {
private static final Logger logger = LogService.getLogger();
ProxyCache proxyCache;
QueryService realQueryService;
List cqNames = new ArrayList();
public ProxyQueryService(ProxyCache proxyCache, QueryService realQueryService) {
this.proxyCache = proxyCache;
this.realQueryService = realQueryService;
}
public void closeCqs() {
closeCqs(false);
}
public void closeCqs(boolean keepAlive) {
preOp();
try {
((DefaultQueryService) realQueryService).getCqService().closeAllCqs(!keepAlive,
Arrays.asList(this.getCqs()), keepAlive);
this.cqNames.clear();
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to closeAll Cqs. Error: {}", cqe.getMessage(), cqe);
}
}
}
public Index createHashIndex(String indexName, String indexedExpression, String fromClause)
throws IndexInvalidException, IndexNameConflictException, IndexExistsException,
RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createHashIndex(String indexName, String indexedExpression, String fromClause,
String imports) throws IndexInvalidException, IndexNameConflictException,
IndexExistsException, RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createIndex(String indexName, IndexType indexType, String indexedExpression,
String fromClause) throws IndexInvalidException, IndexNameConflictException,
IndexExistsException, RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createIndex(String indexName, IndexType indexType, String indexedExpression,
String fromClause, String imports) throws IndexInvalidException, IndexNameConflictException,
IndexExistsException, RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createIndex(String indexName, String indexedExpression, String fromClause)
throws IndexInvalidException, IndexNameConflictException, IndexExistsException,
RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createIndex(String indexName, String indexedExpression, String fromClause,
String imports) throws IndexInvalidException, IndexNameConflictException,
IndexExistsException, RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public Index createKeyIndex(String indexName, String indexedExpression, String fromClause)
throws IndexInvalidException, IndexNameConflictException, IndexExistsException,
RegionNotFoundException, UnsupportedOperationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public void defineKeyIndex(String indexName, String indexedExpression, String fromClause)
throws RegionNotFoundException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public void defineHashIndex(String indexName, String indexedExpression, String regionPath)
throws RegionNotFoundException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public void defineHashIndex(String indexName, String indexedExpression, String regionPath,
String imports) throws RegionNotFoundException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public void defineIndex(String indexName, String indexedExpression, String regionPath)
throws RegionNotFoundException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public void defineIndex(String indexName, String indexedExpression, String regionPath,
String imports) throws RegionNotFoundException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public List createDefinedIndexes() throws MultiIndexCreationException {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
@Override
public boolean clearDefinedIndexes() {
throw new UnsupportedOperationException(
"Index creation on the server is not supported from the client.");
}
public void executeCqs() throws CqException {
preOp();
try {
((DefaultQueryService) realQueryService).getCqService()
.executeCqs(Arrays.asList(this.getCqs()));
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to execute cqs. Error: {}", cqe.getMessage(), cqe);
}
}
}
public void executeCqs(String regionName) throws CqException {
preOp();
try {
((DefaultQueryService) realQueryService).getCqService()
.executeCqs(Arrays.asList(this.getCqs(regionName)));
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to execute cqs on the specified region. Error: {}", cqe.getMessage(),
cqe);
}
}
}
public CqQuery getCq(String cqName) {
preOp();
if (this.cqNames.contains(cqName)) {
return this.realQueryService.getCq(cqName);
} else {
return null;
}
}
public CqServiceStatistics getCqStatistics() {
throw new UnsupportedOperationException();
}
public ClientCQ[] getCqs() {
preOp();
ClientCQ[] cqs = null;
try {
ArrayList cqList = new ArrayList();
for (String name : this.cqNames) {
cqList.add(((DefaultQueryService) realQueryService).getCqService().getCq(name));
}
cqs = new ClientCQ[cqList.size()];
cqList.toArray(cqs);
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to get Cqs. Error: {}", cqe.getMessage(), cqe);
}
}
return cqs;
}
public ClientCQ[] getCqs(String regionName) throws CqException {
preOp();
Collection cqs = null;
try {
ArrayList cqList = new ArrayList();
cqs = ((DefaultQueryService) realQueryService).getCqService().getAllCqs(regionName);
for (InternalCqQuery cq : cqs) {
if (this.cqNames.contains(cq.getName())) {
cqList.add((CqQuery) cq);
}
}
ClientCQ[] results = new ClientCQ[cqList.size()];
cqList.toArray(results);
return results;
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to get Cqs. Error: {}", cqe.getMessage(), cqe);
}
throw cqe;
}
}
public Index getIndex(Region region, String indexName) {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public Collection getIndexes() {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public Collection getIndexes(Region region) {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public Collection getIndexes(Region region, IndexType indexType) {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public CqQuery newCq(String queryString, CqAttributes cqAttributes)
throws QueryInvalidException, CqException {
preOp(true);
ClientCQ cq = null;
try {
cq = ((DefaultQueryService) realQueryService).getCqService().newCq(null, queryString,
cqAttributes, ((DefaultQueryService) realQueryService).getPool(), false);
cq.setProxyCache(this.proxyCache);
this.cqNames.add(cq.getName());
} catch (CqExistsException cqe) {
// Should not throw in here.
if (logger.isDebugEnabled()) {
logger.debug("Unable to createCq. Error: {}", cqe.getMessage(), cqe);
}
} finally {
postOp();
}
return cq;
}
public CqQuery newCq(String queryString, CqAttributes cqAttributes, boolean isDurable)
throws QueryInvalidException, CqException {
preOp(true);
ClientCQ cq = null;
try {
cq = ((DefaultQueryService) realQueryService).getCqService().newCq(null, queryString,
cqAttributes, ((DefaultQueryService) realQueryService).getPool(), isDurable);
cq.setProxyCache(this.proxyCache);
this.cqNames.add(cq.getName());
} catch (CqExistsException cqe) {
// Should not throw in here.
if (logger.isDebugEnabled()) {
logger.debug("Unable to createCq. Error: {}", cqe.getMessage(), cqe);
}
} finally {
postOp();
}
return cq;
}
public CqQuery newCq(String cqName, String queryString, CqAttributes cqAttributes)
throws QueryInvalidException, CqExistsException, CqException {
preOp(true);
try {
if (cqName == null) {
throw new IllegalArgumentException(
LocalizedStrings.DefaultQueryService_CQNAME_MUST_NOT_BE_NULL.toLocalizedString());
}
ClientCQ cq = ((DefaultQueryService) realQueryService).getCqService().newCq(cqName,
queryString, cqAttributes, ((DefaultQueryService) realQueryService).getPool(), false);
cq.setProxyCache(proxyCache);
this.cqNames.add(cq.getName());
return cq;
} finally {
postOp();
}
}
public CqQuery newCq(String cqName, String queryString, CqAttributes cqAttributes,
boolean isDurable) throws QueryInvalidException, CqExistsException, CqException {
preOp(true);
try {
if (cqName == null) {
throw new IllegalArgumentException(
LocalizedStrings.DefaultQueryService_CQNAME_MUST_NOT_BE_NULL.toLocalizedString());
}
ClientCQ cq = ((DefaultQueryService) realQueryService).getCqService().newCq(cqName,
queryString, cqAttributes, ((DefaultQueryService) realQueryService).getPool(), isDurable);
cq.setProxyCache(proxyCache);
this.cqNames.add(cq.getName());
return cq;
} finally {
postOp();
}
}
public Query newQuery(String queryString) {
preOp();
return ((DefaultQueryService) realQueryService).newQuery(queryString, this.proxyCache);
}
public void removeIndex(Index index) {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public void removeIndexes() {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public void removeIndexes(Region region) {
throw new UnsupportedOperationException(
"Index operation on the server is not supported from the client.");
}
public void stopCqs() throws CqException {
preOp();
try {
((DefaultQueryService) realQueryService).getCqService().stopCqs(Arrays.asList(this.getCqs()));
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to stop all CQs. Error: {}", cqe.getMessage(), cqe);
}
}
}
public void stopCqs(String regionName) throws CqException {
preOp();
try {
((DefaultQueryService) realQueryService).getCqService()
.stopCqs(Arrays.asList(this.getCqs(regionName)));
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to stop cqs on the specified region. Error: {}", cqe.getMessage(),
cqe);
}
}
}
public List getAllDurableCqsFromServer() throws CqException {
preOp();
try {
((DefaultQueryService) realQueryService).getAllDurableCqsFromServer();
} catch (CqException cqe) {
if (logger.isDebugEnabled()) {
logger.debug("Unable to get all durablec client cqs on the specified region. Error: {}",
cqe.getMessage(), cqe);
}
}
return Collections.EMPTY_LIST;
}
private void preOp() {
preOp(false);
}
private void preOp(boolean setTL) {
if (this.proxyCache.isClosed()) {
throw new CacheClosedException("Cache is closed for this user.");
}
if (setTL) {
UserAttributes.userAttributes.set(this.proxyCache.getUserAttributes());
}
}
private void postOp() {
UserAttributes.userAttributes.set(null);
}
}