110 lines
2.6 KiB
C#
110 lines
2.6 KiB
C#
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// 大名科技（天津）有限公司版权所有 电话：18020030720 QQ：515096995
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//
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// 此源代码遵循位于源代码树根目录中的 LICENSE 文件的许可证
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namespace Admin.NET.Core;
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/// <summary>
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/// Redis 消息扩展
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public class EventConsumer<T> : IDisposable
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{
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private Task _consumerTask;
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private CancellationTokenSource _consumerCts;
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/// <summary>
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/// 消费者
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/// </summary>
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public IProducerConsumer<T> Consumer { get; }
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/// <summary>
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/// ConsumerBuilder
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/// </summary>
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public FullRedis Builder { get; set; }
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/// <summary>
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/// 消息回调
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/// </summary>
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public event EventHandler<T> Received;
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/// <summary>
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/// 构造函数
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/// </summary>
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public EventConsumer(FullRedis redis, string routeKey)
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{
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Builder = redis;
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Consumer = Builder.GetQueue<T>(routeKey);
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}
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/// <summary>
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/// 启动
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/// </summary>
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/// <exception cref="InvalidOperationException"></exception>
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public void Start()
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{
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if (Consumer is null)
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{
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throw new InvalidOperationException("Subscribe first using the Consumer.Subscribe() function");
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}
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if (_consumerTask != null)
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{
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return;
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}
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_consumerCts = new CancellationTokenSource();
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var ct = _consumerCts.Token;
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_consumerTask = Task.Factory.StartNew(() =>
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{
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while (!ct.IsCancellationRequested)
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{
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var cr = Consumer.TakeOne(10);
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if (cr == null) continue;
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Received?.Invoke(this, cr);
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}
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}, ct, TaskCreationOptions.LongRunning, TaskScheduler.Default);
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}
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/// <summary>
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/// 停止
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/// </summary>
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/// <returns></returns>
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public async Task Stop()
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{
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if (_consumerCts == null || _consumerTask == null) return;
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_consumerCts.Cancel();
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try
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{
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await _consumerTask;
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}
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finally
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{
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_consumerTask = null;
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_consumerCts = null;
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}
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}
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/// <summary>
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/// 释放
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// 释放
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/// </summary>
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/// <param name="disposing"></param>
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protected virtual void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (_consumerTask != null)
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{
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Stop().Wait();
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}
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Builder.Dispose();
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}
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}
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}
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