com.yea.remote.netty.handle.AbstractServiceHandler.java Source code

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Here is the source code for com.yea.remote.netty.handle.AbstractServiceHandler.java

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/**
 * Copyright 2017 
 *
 * 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.yea.remote.netty.handle;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;

import com.yea.core.remote.constants.RemoteConstants;
import com.yea.core.remote.struct.Message;
import com.yea.remote.netty.handle.observer.ChannelInboundHandlerObservable;

import io.netty.channel.ChannelHandlerContext;

/**
 * ??
 * @author yiyongfei
 * 
 */
public abstract class AbstractServiceHandler extends ChannelInboundHandlerObservable {
    private ApplicationContext context;

    /** 
     * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
     */
    public void setApplicationContext(ApplicationContext arg0) throws BeansException {
        context = arg0;
    }

    public ApplicationContext getApplicationContext() throws BeansException {
        return context;
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        Message message = (Message) msg;
        if (message.getHeader() != null
                && (message.getHeader().getType() == RemoteConstants.MessageType.SERVICE_REQ.value()
                        || message.getHeader().getType() == RemoteConstants.MessageType.SERVICE_RESP.value())) {
            try {
                execute(ctx, message);
            } catch (Exception ex) {
                if (RemoteConstants.MessageType.SERVICE_RESP.value() == message.getHeader().getType()) {
                    message.getHeader().setType(RemoteConstants.MessageType.SUSPEND_RESP.value());
                    message.getHeader().setResult(RemoteConstants.MessageResult.FAILURE.value());
                    message.setBody(ex);
                } else {
                    message.getHeader().setType(RemoteConstants.MessageType.SUSPEND_REQ.value());
                    message.getHeader().setResult(RemoteConstants.MessageResult.FAILURE.value());
                    message.setBody(ex);
                }
                ctx.fireChannelRead(msg);
            }
        } else {
            ctx.fireChannelRead(msg);
        }
    }

    protected abstract void execute(ChannelHandlerContext ctx, Message message) throws Exception;

    //    @Override
    //    public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
    //        boolean writable = ctx.channel().isWritable();
    //        ctx.channel().config().setOption(ChannelOption.AUTO_READ, writable);
    //        super.channelWritabilityChanged(ctx);
    //    }
}