MasstransferExporter/MasstransferCommon/Events/EventBus.cs

65 lines
1.7 KiB
C#

using Serilog;
namespace MasstransferCommon.Events;
/// <summary>
/// 事件总线
/// </summary>
/// <typeparam name="T"></typeparam>
public abstract class EventBus<T>
{
private static readonly Dictionary<EventType, List<Delegate>> Subscribers = new();
/// <summary>
/// 添加订阅
/// </summary>
/// <param name="type"></param>
/// <param name="action"></param>
public static void AddEventHandler(EventType type, Delegate action)
{
if (Subscribers.TryGetValue(type, out var subscribers))
{
var any = subscribers.Any(item => item.Equals(action));
if (!any) subscribers.Add(action);
}
else
{
Subscribers.Add(type, [action]);
}
}
/// <summary>
/// 移除订阅逻辑
/// </summary>
/// <param name="type">事件类型</param>
/// <param name="action">回调方法</param>
public static void RemoveEventHandler(EventType type, Delegate action)
{
if (!Subscribers.TryGetValue(type, out var handlers)) return;
handlers.Remove(action);
}
/// <summary>
/// 发布事件
/// </summary>
/// <param name="type"></param>
/// <param name="data"></param>
public static void Publish(EventType type, T data)
{
if (!Subscribers.TryGetValue(type, out var subscribers)) return;
// 创建一个副本,避免在回调中修改订阅列表导致迭代异常
var actions = subscribers.ToList();
foreach (var action in actions)
try
{
action.DynamicInvoke(type, data);
}
catch (Exception e)
{
Log.Error(e, e.Message);
}
}
}