😎增加事件总线广播消息功能
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@ -4,6 +4,8 @@
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//
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// 不得利用本项目从事危害国家安全、扰乱社会秩序、侵犯他人合法权益等法律法规禁止的活动!任何基于本项目二次开发而产生的一切法律纠纷和责任,我们不承担任何责任!
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using NewLife.Caching.Queues;
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using Newtonsoft.Json;
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using System.Threading.Channels;
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namespace Admin.NET.Core;
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@ -11,6 +13,12 @@ namespace Admin.NET.Core;
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/// <summary>
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/// Redis自定义事件源存储器
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/// </summary>
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/// <remarks>
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/// 在集群部署时,一般每一个消息只由一个服务节点消费一次。
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/// 有些特殊情情要通知到服务器群中的每一个节点(比如需要强制加载某些配置、重点服务等),
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/// 在这种情况下就要以“broadcast:”开头来定义EventId,
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/// 本系统会把“broadcast:”开头的事件视为“广播消息”保证集群中的每一个服务节点都能消费得到这个消息
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/// </remarks>
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public sealed class RedisEventSourceStorer : IEventSourceStorer, IDisposable
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{
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/// <summary>
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@ -23,11 +31,9 @@ public sealed class RedisEventSourceStorer : IEventSourceStorer, IDisposable
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/// </summary>
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private readonly Channel<IEventSource> _channel;
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///// <summary>
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///// Redis 连接对象
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///// </summary>
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//private readonly FullRedis _redis;
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private IProducerConsumer<ChannelEventSource> _queue;
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private IProducerConsumer<ChannelEventSource> _queueSingle;
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private RedisStream<string> _queueBroadcast;
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/// <summary>
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/// 路由键
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@ -54,24 +60,48 @@ public sealed class RedisEventSourceStorer : IEventSourceStorer, IDisposable
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//_redis = redis as FullRedis;
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_routeKey = routeKey;
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// 创建消息订阅者
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_queue = cacheProvider.GetQueue<ChannelEventSource>(routeKey);
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_eventConsumer = new EventConsumer<ChannelEventSource>(_queue);
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// 创建广播消息订阅者,即所有服务器节点都能收到消息(用来发布重启、Reload配置等消息)
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FullRedis redis = (FullRedis)cacheProvider.Cache;
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var clusterOpt = App.GetConfig<ClusterOptions>("Cluster", true);
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_queueBroadcast = redis.GetStream<string>(routeKey + ":broadcast");
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_queueBroadcast.Group = clusterOpt.ServerId;//根据服务器标识分配到不同的分组里
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_queueBroadcast.Expire = TimeSpan.FromSeconds(10);//消息10秒过期()
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_queueBroadcast.ConsumeAsync(OnConsumeBroadcast);
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// 创建队列消息订阅者,只要有一个服务节点消费了消息即可
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_queueSingle = redis.GetQueue<ChannelEventSource>(routeKey + ":single");
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_eventConsumer = new EventConsumer<ChannelEventSource>(_queueSingle);
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// 订阅消息写入 Channel
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_eventConsumer.Received += (send, cr) =>
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{
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// 反序列化消息
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//var eventSource = JsonConvert.DeserializeObject<ChannelEventSource>(cr);
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// 写入内存管道存储器
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_channel.Writer.WriteAsync(cr);
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var oriColor = Console.ForegroundColor;
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ChannelEventSource ces = (ChannelEventSource)cr;
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ConsumeChannelEventSource(ces);
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};
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// 启动消费者
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_eventConsumer.Start();
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}
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private Task OnConsumeBroadcast(string source, Message message, CancellationToken token)
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{
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ChannelEventSource ces = JsonConvert.DeserializeObject<ChannelEventSource>(source);
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ConsumeChannelEventSource(ces);
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return Task.CompletedTask;
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}
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private void ConsumeChannelEventSource(ChannelEventSource ces)
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{
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// 打印测试事件
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if (ces.EventId != null && ces.EventId.IndexOf(":Test") > 0)
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{
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var oriColor = Console.ForegroundColor;
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Console.ForegroundColor = ConsoleColor.Green;
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Console.WriteLine($"有消息要处理{ces.EventId},{ces.Payload}");
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Console.ForegroundColor = oriColor;
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}
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_channel.Writer.WriteAsync(ces);
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}
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/// <summary>
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/// 将事件源写入存储器
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/// </summary>
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@ -82,29 +112,28 @@ public sealed class RedisEventSourceStorer : IEventSourceStorer, IDisposable
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{
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// 空检查
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if (eventSource == default)
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{
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throw new ArgumentNullException(nameof(eventSource));
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}
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// 这里判断是否是 ChannelEventSource 或者 自定义的 EventSource
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if (eventSource is ChannelEventSource source)
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{
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// 序列化消息
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//var data = JsonSerializer.Serialize(source);
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//// 获取一个订阅对象
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//var queue = _redis.GetQueue<ChannelEventSource>(_routeKey);
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// 异步发布
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await Task.Factory.StartNew(() =>
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{
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//queue.Add(source);
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_queue.Add(source);
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if (source.EventId != null && source.EventId.StartsWith("broadcast:"))
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{
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string str = JsonConvert.SerializeObject(source);
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_queueBroadcast.Add(str);
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}
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else
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{
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_queueSingle.Add(source);
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}
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}, cancellationToken, TaskCreationOptions.LongRunning, System.Threading.Tasks.TaskScheduler.Default);
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}
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else
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{
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// 这里处理动态订阅问题
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// 处理动态订阅问题
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await _channel.Writer.WriteAsync(eventSource, cancellationToken);
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}
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}
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