Files
OnboardXAdmin/SimpleAdmin.System/EventSubscriber/NoticeEventSubscriber.cs
T
2025-09-29 13:48:36 +08:00

111 lines
3.9 KiB
C#

// Copyright (c) 2022-Now 少林寺驻北固山办事处大神父王喇嘛
//
// SimpleAdmin 基于 Apache License Version 2.0 协议发布,可用于商业项目,但必须遵守以下补充条款:
// 1.请不要删除和修改根目录下的LICENSE文件。
// 2.请不要删除和修改SimpleAdmin源码头部的版权声明。
// 3.分发源码时候,请注明软件出处 https://gitee.com/dotnetmoyu/SimpleAdmin
// 4.基于本软件的作品,只能使用 SimpleAdmin 作为后台服务,除外情况不可商用且不允许二次分发或开源。
// 5.请不得将本软件应用于危害国家安全、荣誉和利益的行为,不能以任何形式用于非法为目的的行为。
// 6.任何基于本软件而产生的一切法律纠纷和责任,均于我司无关。
using Microsoft.Extensions.Options;
namespace SimpleAdmin.System;
/// <summary>
/// 通知事件总线
/// </summary>
public class NoticeEventSubscriber : IEventSubscriber, ISingleton
{
private readonly ISimpleCacheService _simpleCacheService;
private readonly IServiceScopeFactory _scopeFactory;
private readonly bool _useMessageCenter;
private readonly SqlSugarScope _db;
public NoticeEventSubscriber(ISimpleCacheService simpleCacheService, IServiceScopeFactory scopeFactory,
IOptionsMonitor<SystemSettingsOptions> options)
{
_db = DbContext.DB;
_simpleCacheService = simpleCacheService;
_scopeFactory = scopeFactory;
_useMessageCenter = options.CurrentValue.UseMessageCenter;
}
/// <summary>
/// 通知用户下线事件
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
[EventSubscribe(EventSubscriberConst.USER_LOGIN_OUT)]
public async Task UserLoginOut(EventHandlerExecutingContext context)
{
var loginEvent = (UserLoginOutEvent)context.Source.Payload;//获取参数
//客户端ID列表
var clientIds = new List<string>();
//遍历token列表获取客户端ID列表
loginEvent.TokenInfos.ForEach(it =>
{
clientIds.AddRange(it.ClientIds);
});
}
/// <summary>
/// 有新的消息
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
[EventSubscribe(EventSubscriberConst.NEW_MESSAGE)]
public async Task NewMessage(EventHandlerExecutingContext context)
{
var newMessageEvent = (NewMessageEvent)context.Source.Payload;//获取参数
var messageId = newMessageEvent.Id;
//如果启用了通知中心
if (_useMessageCenter)
{
if (newMessageEvent.SendWay == SysDictConst.SEND_WAY_NOW)
{
//立即发送
await SendMessage(messageId);
}
else
{
//延迟发送
var sendTime = newMessageEvent.SendTime;
//计算延迟时间
var delay = (int)(sendTime - DateTime.Now).TotalSeconds;
if (delay > 0)
{
await SendMessage(messageId, delay);
}
else
{
await SendMessage(messageId);
}
}
}
}
/// <summary>
/// 发送消息
/// </summary>
/// <param name="messageId">消息id</param>
/// <param name="delay">延迟</param>
private async Task SendMessage(long messageId, int delay = 0)
{
_simpleCacheService.AddDelayQueue(CacheConst.CACHE_NOTIFICATION, messageId, delay);
}
/// <summary>
/// 获取服务
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
private T GetService<T>() where T : class, new()
{
// 创建新的作用域
using var scope = _scopeFactory.CreateScope();
return scope.ServiceProvider.GetRequiredService<T>();
}
}