| /* |
| * 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 com.alibaba.dubbo.remoting.transport; |
| |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.common.URL; |
| import com.alibaba.dubbo.common.logger.Logger; |
| import com.alibaba.dubbo.common.logger.LoggerFactory; |
| import com.alibaba.dubbo.common.serialize.Serialization; |
| import com.alibaba.dubbo.common.utils.NetUtils; |
| import com.alibaba.dubbo.remoting.Channel; |
| import com.alibaba.dubbo.remoting.Codec2; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| /** |
| * AbstractCodec |
| */ |
| public abstract class AbstractCodec implements Codec2 { |
| |
| private static final Logger logger = LoggerFactory.getLogger(AbstractCodec.class); |
| |
| protected static void checkPayload(Channel channel, long size) throws IOException { |
| int payload = Constants.DEFAULT_PAYLOAD; |
| if (channel != null && channel.getUrl() != null) { |
| payload = channel.getUrl().getParameter(Constants.PAYLOAD_KEY, Constants.DEFAULT_PAYLOAD); |
| } |
| if (payload > 0 && size > payload) { |
| ExceedPayloadLimitException e = new ExceedPayloadLimitException("Data length too large: " + size + ", max payload: " + payload + ", channel: " + channel); |
| logger.error(e); |
| throw e; |
| } |
| } |
| |
| protected Serialization getSerialization(Channel channel) { |
| return CodecSupport.getSerialization(channel.getUrl()); |
| } |
| |
| protected boolean isClientSide(Channel channel) { |
| String side = (String) channel.getAttribute(Constants.SIDE_KEY); |
| if ("client".equals(side)) { |
| return true; |
| } else if ("server".equals(side)) { |
| return false; |
| } else { |
| InetSocketAddress address = channel.getRemoteAddress(); |
| URL url = channel.getUrl(); |
| boolean client = url.getPort() == address.getPort() |
| && NetUtils.filterLocalHost(url.getIp()).equals( |
| NetUtils.filterLocalHost(address.getAddress() |
| .getHostAddress())); |
| channel.setAttribute(Constants.SIDE_KEY, client ? "client" |
| : "server"); |
| return client; |
| } |
| } |
| |
| protected boolean isServerSide(Channel channel) { |
| return !isClientSide(channel); |
| } |
| |
| } |