eagle.jfaster.org.client.channel.AbstractNettyChannel Maven / Gradle / Ivy

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/*
 * Copyright 2017 eagle.jfaster.org.
 * 
 * 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 eagle.jfaster.org.client.channel;

import eagle.jfaster.org.client.NettyClient;
import eagle.jfaster.org.client.NettyResponseFuture;
import eagle.jfaster.org.client.pool.NettyPoolEntry;
import eagle.jfaster.org.client.pool.NettySharedConnPool;
import eagle.jfaster.org.config.ConfigEnum;
import eagle.jfaster.org.config.common.MergeConfig;
import eagle.jfaster.org.exception.EagleFrameException;
import eagle.jfaster.org.logging.InternalLogger;
import eagle.jfaster.org.logging.InternalLoggerFactory;
import eagle.jfaster.org.rpc.MethodInvokeCallBack;
import eagle.jfaster.org.rpc.Request;
import eagle.jfaster.org.rpc.support.EagleRequest;
import eagle.jfaster.org.util.RemotingUtil;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import lombok.Getter;
import lombok.Setter;

import java.net.SocketAddress;

/**
 * netty channel 包装类
 *
 * Created by fangyanpeng1 on 2017/8/3.
 */
public abstract class AbstractNettyChannel {

    private final static InternalLogger logger = InternalLoggerFactory.getInstance(AbstractNettyChannel.class);

    protected NettyClient client;

    @Getter
    private Channel channel;

    private MergeConfig config;

    private MethodInvokeCallBack callBack;

    private boolean sync = true;

    @Getter
    @Setter
    private NettyPoolEntry poolEntry;

    public AbstractNettyChannel(NettyClient client, Channel channel) {
        this.client = client;
        this.channel = channel;
        this.config = client.getConfig();
        this.callBack = client.getCallBack();
        sync = (callBack == null);
    }

    public Object request(Request request, NettySharedConnPool connPool) throws Exception {
        int timeout = config.getExtInt(ConfigEnum.requestTimeout.getName(), ConfigEnum.requestTimeout.getIntValue());
        final int opaque = request.getOpaque();
        final NettyResponseFuture responseFuture = new NettyResponseFuture(opaque, timeout, callBack, request);
        try {
            if (timeout < 0) {
                throw new EagleFrameException("The request timeout of %s is not allowed to set 0", timeout);
            }
            client.addCallBack(opaque, responseFuture);
            final SocketAddress addr = channel.remoteAddress();
            channel.writeAndFlush(request).addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture f) throws Exception {
                    if (f.isSuccess()) {
                        responseFuture.setSendRequestOK(true);
                        client.resetErrorCount();
                        return;
                    } else {
                        client.incrErrorCount();
                        responseFuture.setSendRequestOK(false);
                    }

                    client.removeCallBack(opaque);
                    Exception e = new EagleFrameException(f.cause().getMessage());
                    if (!sync) {
                        responseFuture.setException(e);
                        client.executeInvokeCallback(responseFuture);
                    } else {
                        responseFuture.onFail(e);
                    }
                    logger.warn("send a request command to channel <" + addr + "> failed.");
                }
            });
        } finally {
            connPool.release(this);
        }
        return handle(timeout, responseFuture);

    }

    protected abstract Object handle(long timeout, NettyResponseFuture responseFuture) throws Exception;

    public void close() {
        try {
            RemotingUtil.closeChannel(channel, "AbstractNettyChannel close");
        } catch (Exception e) {
            logger.info("Close channel error ", e);
        }
    }
}