111 lines
3.9 KiB
C#
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
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//
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// 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:
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// 1.请不要删除和修改根目录下的LICENSE文件。
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// 2.请不要删除和修改SimpleAdmin源码头部的版权声明。
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// 3.分发源码时候，请注明软件出处 https://gitee.com/dotnetmoyu/SimpleAdmin
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// 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。
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// 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。
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// 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。
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using Microsoft.Extensions.Options;
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namespace SimpleAdmin.System;
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/// <summary>
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/// 通知事件总线
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/// </summary>
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public class NoticeEventSubscriber : IEventSubscriber, ISingleton
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{
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private readonly ISimpleCacheService _simpleCacheService;
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private readonly IServiceScopeFactory _scopeFactory;
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private readonly bool _useMessageCenter;
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private readonly SqlSugarScope _db;
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public NoticeEventSubscriber(ISimpleCacheService simpleCacheService, IServiceScopeFactory scopeFactory,
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IOptionsMonitor<SystemSettingsOptions> options)
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{
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_db = DbContext.DB;
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_simpleCacheService = simpleCacheService;
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_scopeFactory = scopeFactory;
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_useMessageCenter = options.CurrentValue.UseMessageCenter;
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}
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/// <summary>
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/// 通知用户下线事件
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/// </summary>
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/// <param name="context"></param>
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/// <returns></returns>
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[EventSubscribe(EventSubscriberConst.USER_LOGIN_OUT)]
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public async Task UserLoginOut(EventHandlerExecutingContext context)
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{
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var loginEvent = (UserLoginOutEvent)context.Source.Payload;//获取参数
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//客户端ID列表
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var clientIds = new List<string>();
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//遍历token列表获取客户端ID列表
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loginEvent.TokenInfos.ForEach(it =>
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{
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clientIds.AddRange(it.ClientIds);
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});
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}
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/// <summary>
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/// 有新的消息
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/// </summary>
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/// <param name="context"></param>
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/// <returns></returns>
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[EventSubscribe(EventSubscriberConst.NEW_MESSAGE)]
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public async Task NewMessage(EventHandlerExecutingContext context)
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{
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var newMessageEvent = (NewMessageEvent)context.Source.Payload;//获取参数
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var messageId = newMessageEvent.Id;
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//如果启用了通知中心
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if (_useMessageCenter)
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{
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if (newMessageEvent.SendWay == SysDictConst.SEND_WAY_NOW)
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{
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//立即发送
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await SendMessage(messageId);
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}
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else
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{
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//延迟发送
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var sendTime = newMessageEvent.SendTime;
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//计算延迟时间
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var delay = (int)(sendTime - DateTime.Now).TotalSeconds;
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if (delay > 0)
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{
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await SendMessage(messageId, delay);
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}
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else
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{
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await SendMessage(messageId);
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}
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}
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}
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}
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/// <summary>
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/// 发送消息
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/// </summary>
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/// <param name="messageId">消息id</param>
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/// <param name="delay">延迟</param>
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private async Task SendMessage(long messageId, int delay = 0)
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{
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_simpleCacheService.AddDelayQueue(CacheConst.CACHE_NOTIFICATION, messageId, delay);
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}
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/// <summary>
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/// 获取服务
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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private T GetService<T>() where T : class, new()
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{
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// 创建新的作用域
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using var scope = _scopeFactory.CreateScope();
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return scope.ServiceProvider.GetRequiredService<T>();
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}
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}
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