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.Net Redis实现发布/订阅(RedisPubSubServer)

来源：互联网 发布：淘宝电子凭证是什么 编辑：程序博客网 时间：2024/06/15 23:16
Redis是一个开源的使用ANSI C语言编写、支持网络、可基于内存亦可持久化的日志型、Key-Value数据库，并提供多种语言的API。本示例演示了怎么样通过Redis服务，来实现发布/订阅服务。借助于ServiceStack.Redis客户端，我们可以轻松来实现这些功能。在这里，依然采用控制台的方式，简单的为大家演示。如果想了解更多，大家可以访问：https://github.com/ServiceStack/ServiceStack.Text。

代码片段(3)[全屏查看所有代码]

1. [图片] 通过NuGet获取对ServiceStack.Redis的引用.png    

2. [代码]实现发布/订阅服务     跳至 [2] [全屏预览]

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usingServiceStack.Messaging;
usingServiceStack.Redis;
usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading;
usingSystem.Threading.Tasks;
/******************************************************************************************************************
 *
 *
 * 说　明： Redis发布订阅服务(版本：Version1.0.0)
 * 作　者：李朝强
 * 日　期：2015/05/19
 * 修　改：
 * 参　考：http://my.oschina.net/lichaoqiang/
 * 备　注：暂无...
 *
 *
 * ***************************************************************************************************************/
namespaceLcq
{
    class Program
    {
        /// <summary>
        ///
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            Console.Title = "Redis发布、订阅服务";
 
            //发布服务
            //Pub();
            //Console.ReadLine();
 
 
            //订阅
            Subscription();
 
            RedisClient client = newRedisClient("172.16.16.65", 6379);
            while(true)
            {
                stringinput = Console.ReadLine();
                client.PublishMessage("channel-1", input);
            }
        }
 
        #region 发布/订阅·
        /// 发布
        /// </summary>
        public static voidPub()
        {
            //PooledRedisClientManager
            ServiceStack.Redis.IRedisClientsManager RedisClientManager = newServiceStack.Redis.PooledRedisClientManager("172.16.16.65:6379");
 
            //发布、订阅服务 IRedisPubSubServer
            ServiceStack.Redis.RedisPubSubServer pubSubServer = newServiceStack.Redis.RedisPubSubServer(RedisClientManager, "channel-1", "channel-2");
 
            //接收消息
            pubSubServer.OnMessage = (channel, msg) =>
            {
                Console.WriteLine(string.Format("服务端:频道{0}接收消息：{1}    时间：{2}", channel, msg, DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")));
                Console.WriteLine("___________________________________________________________________");
            };
            pubSubServer.OnStart = () =>
            {
                Console.WriteLine("发布服务已启动");
                Console.WriteLine("___________________________________________________________________");
            };
            pubSubServer.OnStop = () => { Console.WriteLine("服务停止"); };
            pubSubServer.OnUnSubscribe = (channel) => { Console.WriteLine(channel); };
            pubSubServer.OnError = (e) => { Console.WriteLine(e.Message); };
            pubSubServer.OnFailover = (s) => { Console.WriteLine(s); };
 
            //pubSubServer.OnHeartbeatReceived = () => { Console.WriteLine("OnHeartbeatReceived"); };
            //pubSubServer.OnHeartbeatSent = () => { Console.WriteLine("OnHeartbeatSent"); };
            //pubSubServer.IsSentinelSubscription = true;
            pubSubServer.Start();
 
 
        }
 
 
        /// <summary>
        /// 发送消息
        /// </summary>
        public static Task Send()
        {
            returnTask.Run(() =>
            {
                RedisClient client = newRedisClient("172.16.16.65", 6379);
                client.PublishMessage("channel-1", "这是我发送的消息！");
            });
        }
 
        /// <summary>
        /// 订阅
        /// </summary>
        public static void Subscription()
        {
            using(ServiceStack.Redis.RedisClient consumer = newRedisClient("172.16.16.65", 6379))
            {
                //创建订阅
                ServiceStack.Redis.IRedisSubscription subscription = consumer.CreateSubscription();
 
                //接收消息处理Action
                subscription.OnMessage = (channel, msg) =>
                {
                    Console.WriteLine("频道【"+ channel + "】订阅客户端接收消息："+ ":"+ msg + "         ["+ DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss") + "]");
                    Console.WriteLine("订阅数："+ subscription.SubscriptionCount);
                    Console.WriteLine("___________________________________________________________________");
 
                };
 
                //订阅事件处理
                subscription.OnSubscribe = (channel) =>
                {
                    Console.WriteLine("订阅客户端：开始订阅"+ channel);
                };
 
                //取消订阅事件处理
                subscription.OnUnSubscribe = (a) => { Console.WriteLine("订阅客户端：取消订阅"); };
 
                //模拟：发送100条消息给服务
                Task.Run(() =>
                {
                    using(ServiceStack.Redis.IRedisClient publisher = newServiceStack.Redis.RedisClient("172.16.16.65", 6379))
                    {
                        for(inti = 1; i <= 100; i++)
                        {
                            publisher.PublishMessage("channel-1", string.Format("这是我发送的第{0}消息!", i));
                            System.Threading.Thread.Sleep(200);
                        }
                    }
                    subscription.UnSubscribeFromAllChannels();
                });
 
                //订阅频道
                subscription.SubscribeToChannels("channel-1");
            }
 
        }
 
 
        #endregion
 
        /// <summary>
        /// Example
        /// </summary>
        public static void Example()
        {
            varmessagesReceived = 0;
            varPublishMessageCount = 10;
            stringMessagePrefix = "LCQ:", ChannelName = "channel-4";
            using(varredisConsumer = newRedisClient("172.16.16.65", 6379))
            using(varsubscription = redisConsumer.CreateSubscription())
            {
                //订阅
                subscription.OnSubscribe = channel =>
                {
                    Console.WriteLine("订阅频道'{0}'", channel);
                    Console.WriteLine();
                };
                //取消订阅
                subscription.OnUnSubscribe = channel =>
                {
                    Console.WriteLine("取消订阅 '{0}'", channel);
                    Console.WriteLine();
                };
 
                //接收消息
                subscription.OnMessage = (channel, msg) =>
                {
                    Console.WriteLine("接收消息 '{0}' from channel '{1}'", msg, channel);
                    Console.WriteLine();
                    //As soon as we've received all 5 messages, disconnect by unsubscribing to all channels
                    if(++messagesReceived == PublishMessageCount)
                    {
                        subscription.UnSubscribeFromAllChannels();
                    }
                };
 
                ThreadPool.QueueUserWorkItem(x =>
                {
                    Thread.Sleep(200);
                    Console.WriteLine("开始发送消息...");
 
                    using(varredisPublisher = newRedisClient("172.16.16.65", 6379))
                    {
                        for(vari = 1; i <= PublishMessageCount; i++)
                        {
                            varmessage = MessagePrefix + i;
                            Console.WriteLine("正在发布消息 '{0}' 到频道 '{1}'", message, ChannelName);
                            Console.WriteLine();
                            redisPublisher.PublishMessage(ChannelName, message);
                        }
                    }
                });
 
                Console.WriteLine("开始启动监听 '{0}'", ChannelName);
                subscription.SubscribeToChannels(ChannelName); //blocking
            }
 
            Console.WriteLine("EOF");
        }
    }
}

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3. [图片] 示例控制台效果.png    





http://www.oschina.net/code/snippet_584165_52231
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