| /* |
| * 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.internal.cache.tier.sockets; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.geode.internal.Version; |
| import org.apache.geode.internal.cache.EventID; |
| import org.apache.geode.internal.cache.tier.MessageType; |
| |
| /** |
| * Class <code>ClientPingMessageImpl</code> is a ping message that is periodically placed in the |
| * <code>CacheClientProxy</code>'s queue to verify the client connection is still alive. |
| * |
| * |
| * @since GemFire 6.6.2.x |
| */ |
| public class ClientPingMessageImpl implements ClientMessage { |
| |
| private static final long serialVersionUID = 5423895238521508743L; |
| |
| /** |
| * Default constructor. |
| */ |
| public ClientPingMessageImpl() {} |
| |
| @Override |
| public Message getMessage(CacheClientProxy proxy, boolean notify) throws IOException { |
| Version clientVersion = proxy.getVersion(); |
| Message message = null; |
| if (clientVersion.compareTo(Version.GFE_6622) >= 0) { |
| message = getGFEMessage(); |
| } else { |
| throw new IOException( |
| "Unsupported client version for server-to-client message creation: " + clientVersion); |
| } |
| |
| return message; |
| } |
| |
| protected Message getGFEMessage() throws IOException { |
| Message message = new Message(0, Version.CURRENT); |
| message.setMessageType(MessageType.SERVER_TO_CLIENT_PING); |
| message.setTransactionId(0); |
| return message; |
| } |
| |
| @Override |
| public boolean shouldBeConflated() { |
| return true; |
| } |
| |
| @Override |
| public void toData(DataOutput out) throws IOException {} |
| |
| @Override |
| public int getDSFID() { |
| return CLIENT_PING_MESSAGE_IMPL; |
| } |
| |
| @Override |
| public void fromData(DataInput in) throws IOException, ClassNotFoundException {} |
| |
| @Override |
| public EventID getEventId() { |
| return null; |
| } |
| |
| @Override |
| public String getRegionToConflate() { |
| return "gemfire_reserved_region_name_for_client_ping"; |
| } |
| |
| @Override |
| public Object getKeyToConflate() { |
| // This method can be called by HARegionQueue. |
| // Use this to identify the message type. |
| return "ping"; |
| } |
| |
| @Override |
| public Object getValueToConflate() { |
| // This method can be called by HARegionQueue |
| // Use this to identify the message type. |
| return "ping"; |
| } |
| |
| @Override |
| public void setLatestValue(Object value) { |
| return; |
| } |
| |
| @Override |
| public Version[] getSerializationVersions() { |
| return null; |
| } |
| } |