feat: 对接chathub用户列表

Yi.Abp.Net8/module/chat-hub/Yi.Framework.ChatHub.Application/Services/ChatUserService.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FreeRedis;
+using Mapster;
+using Microsoft.Extensions.Options;
+using Volo.Abp.Application.Services;
+using Volo.Abp.Caching;
+using Volo.Abp.DependencyInjection;
+using Yi.Framework.ChatHub.Application.Contracts.Dtos;
+using Yi.Framework.ChatHub.Domain.Shared.Caches;
+
+namespace Yi.Framework.ChatHub.Application.Services
+{
+    public class ChatUserService : ApplicationService
+    {
+        /// <summary>
+        /// 使用懒加载防止报错
+        /// </summary>
+        private IRedisClient RedisClient => LazyServiceProvider.LazyGetRequiredService<IRedisClient>();
+        private string CacheKeyPrefix => LazyServiceProvider.LazyGetRequiredService<IOptions<AbpDistributedCacheOptions>>().Value.KeyPrefix;
+        public async Task<List<ChatUserGetListOutputDto>> GetListAsync()
+        {
+            var key = new ChatOnlineUserCacheKey(CacheKeyPrefix);
+            var cacheUsers = (await RedisClient.HGetAllAsync(key.GetKey())).Select(x => System.Text.Json.JsonSerializer.Deserialize < ChatOnlineUserCacheItem >( x.Value)).ToList();
+            var output = cacheUsers.Adapt<List<ChatUserGetListOutputDto>>();
+            return output;
+        }
+    }
+}