/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* 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.alibaba.dubbo.remoting.transport; | |
import java.io.IOException; | |
import com.alibaba.dubbo.common.Constants; | |
import com.alibaba.dubbo.common.extension.ExtensionLoader; | |
import com.alibaba.dubbo.common.serialize.Serialization; | |
import com.alibaba.dubbo.remoting.Channel; | |
import com.alibaba.dubbo.remoting.Codec; | |
/** | |
* AbstractCodec | |
* | |
* @author william.liangf | |
*/ | |
public abstract class AbstractCodec implements Codec { | |
protected Serialization getSerialization(Channel channel) { | |
Serialization serialization = ExtensionLoader.getExtensionLoader(Serialization.class).getExtension(channel.getUrl().getParameter(Constants.SERIALIZATION_KEY, Constants.DEFAULT_REMOTING_SERIALIZATION)); | |
return serialization; | |
} | |
protected void checkPayload(Channel channel, long size) throws IOException { | |
int payload = Constants.DEFAULT_PAYLOAD; | |
if (channel != null && channel.getUrl() != null) { | |
payload = channel.getUrl().getPositiveParameter(Constants.PAYLOAD_KEY, Constants.DEFAULT_PAYLOAD); | |
} | |
if (size > payload) { | |
throw new IOException("Data length too large: " + size + ", max payload: " + payload + ", channel: " + channel); | |
} | |
} | |
} |