| /* |
| * 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.cq.internal.command; |
| |
| import java.io.IOException; |
| |
| import org.apache.geode.cache.query.CqException; |
| import org.apache.geode.cache.query.internal.cq.CqService; |
| import org.apache.geode.internal.cache.tier.CachedRegionHelper; |
| import org.apache.geode.internal.cache.tier.Command; |
| import org.apache.geode.internal.cache.tier.MessageType; |
| import org.apache.geode.internal.cache.tier.sockets.Message; |
| import org.apache.geode.internal.cache.tier.sockets.ServerConnection; |
| import org.apache.geode.internal.security.SecurityService; |
| import org.apache.geode.security.ResourcePermission.Operation; |
| import org.apache.geode.security.ResourcePermission.Resource; |
| |
| public class MonitorCQ extends BaseCQCommand { |
| |
| private static final MonitorCQ singleton = new MonitorCQ(); |
| |
| public static Command getCommand() { |
| return singleton; |
| } |
| |
| private MonitorCQ() { |
| // nothing |
| } |
| |
| @Override |
| public void cmdExecute(final Message clientMessage, final ServerConnection serverConnection, |
| final SecurityService securityService, long start) throws IOException { |
| CachedRegionHelper crHelper = serverConnection.getCachedRegionHelper(); |
| serverConnection.setAsTrue(REQUIRES_RESPONSE); |
| serverConnection.setAsTrue(REQUIRES_CHUNKED_RESPONSE); |
| |
| int op = clientMessage.getPart(0).getInt(); |
| |
| if (op < 1) { |
| // This should have been taken care at the client - remove? |
| String err = String.format("%s: The MonitorCq operation is invalid.", |
| serverConnection.getName()); |
| sendCqResponse(MessageType.CQDATAERROR_MSG_TYPE, err, clientMessage.getTransactionId(), null, |
| serverConnection); |
| return; |
| } |
| |
| String regionName = null; |
| if (clientMessage.getNumberOfParts() == 2) { |
| // This will be enable/disable on region. |
| regionName = clientMessage.getPart(1).getCachedString(); |
| if (regionName == null) { |
| // This should have been taken care at the client - remove? |
| String err = |
| String.format("%s: A null Region name was passed for MonitorCq operation.", |
| serverConnection.getName()); |
| sendCqResponse(MessageType.CQDATAERROR_MSG_TYPE, err, clientMessage.getTransactionId(), |
| null, serverConnection); |
| return; |
| } |
| } |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug("{}: Received MonitorCq request from {} op: {}{}", serverConnection.getName(), |
| serverConnection.getSocketString(), op, |
| regionName != null ? " RegionName: " + regionName : ""); |
| } |
| |
| securityService.authorize(Resource.CLUSTER, Operation.READ); |
| |
| try { |
| CqService cqService = crHelper.getCache().getCqService(); |
| cqService.start(); |
| // The implementation of enable/disable cq is changed. |
| // Instead calling enable/disable client calls execute/stop methods |
| // at cache and region level. |
| // This method is retained for future purpose, to support admin level apis |
| // similar to enable/disable at system/client level. |
| // Should never come. |
| throw new CqException( |
| "Invalid CQ Monitor request received."); |
| } catch (CqException cqe) { |
| sendCqResponse(MessageType.CQ_EXCEPTION_TYPE, "", clientMessage.getTransactionId(), cqe, |
| serverConnection); |
| } catch (Exception e) { |
| String err = |
| String.format("Exception while handling the monitor request, the operation is %s", |
| op); |
| sendCqResponse(MessageType.CQ_EXCEPTION_TYPE, err, clientMessage.getTransactionId(), e, |
| serverConnection); |
| } |
| } |
| |
| } |