darks.grid.network.GridRemoteSession.java Source code

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Here is the source code for darks.grid.network.GridRemoteSession.java

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/**
 * 
 * Copyright 2015 The Darks Grid Project (Liu lihua)
 *
 * 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 darks.grid.network;

import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;

import java.net.InetSocketAddress;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import darks.grid.GridRuntime;
import darks.grid.beans.GridAddress;
import darks.grid.utils.ChannelUtils;

public class GridRemoteSession implements GridSession {

    private static final Logger log = LoggerFactory.getLogger(GridRemoteSession.class);

    Channel channel;

    int failRetryCount = 3;

    public GridRemoteSession(Channel channel) {
        this.channel = channel;
        failRetryCount = GridRuntime.config().getNetworkConfig().getSendFailRetry();
    }

    @Override
    public String getId() {
        return ChannelUtils.getChannelId(channel);
    }

    @Override
    public boolean sendMessage(Object msg) {
        if (channel == null || !channel.isActive() || !channel.isWritable())
            return false;
        try {
            channel.writeAndFlush(msg);
            return true;
        } catch (Exception e) {
            log.error("Fail to send remote message. Cause " + e.getMessage(), e);
            return false;
        }
    }

    @Override
    public boolean sendSyncMessage(Object msg) {
        return sendSyncMessage(msg, true);
    }

    @Override
    public boolean sendSyncMessage(Object msg, boolean failRetry) {
        if (channel == null || !channel.isActive())
            return false;
        try {
            boolean ret = false;
            int count = 0;
            do {
                if (!channel.isActive() || !channel.isWritable())
                    return false;
                ChannelFuture future = channel.writeAndFlush(msg).sync();
                ret = future.isSuccess();
                if (log.isDebugEnabled())
                    log.debug("Send " + msg + " to " + channel.remoteAddress() + " ret:" + ret);
                if (ret)
                    break;
                count++;
            } while (count < failRetryCount && failRetry);
            return ret;
        } catch (Exception e) {
            log.error("Fail to send remote sync message.[" + channel.remoteAddress() + "/active:"
                    + channel.isActive() + "] Cause " + e.getMessage(), e);
            return false;
        }
    }

    @Override
    public boolean isLocal() {
        return false;
    }

    @Override
    public synchronized void close() {
        if (channel != null && channel.isActive() && channel.isOpen()) {
            log.warn("Close session channel " + channel.remoteAddress());
            channel.close();
        }
        GridSessionFactory.removeSessionCache(channel);
    }

    @Override
    public boolean isActive() {
        if (channel == null || !channel.isActive())
            return false;
        else
            return true;
    }

    @Override
    public GridAddress remoteAddress() {
        if (channel == null)
            return null;
        return GridAddress.wrap((InetSocketAddress) channel.remoteAddress());
    }

    @Override
    public GridAddress localAddress() {
        if (channel == null)
            return null;
        return GridAddress.wrap((InetSocketAddress) channel.localAddress());
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((channel == null) ? 0 : channel.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        GridRemoteSession other = (GridRemoteSession) obj;
        if (channel == null) {
            if (other.channel != null)
                return false;
        } else if (!channel.equals(other.channel))
            return false;
        return true;
    }

}