99 lines
3.4 KiB
C#
99 lines
3.4 KiB
C#
using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Logging;
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using OpenAI.Chat;
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using SqlSugar;
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using Volo.Abp.Application.Services;
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using Yi.Framework.AiHub.Application.Contracts.Dtos.OpenAiDto;
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using Yi.Framework.AiHub.Domain.Entities.Model;
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using Yi.Framework.AiHub.Domain.Managers;
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using Yi.Framework.SqlSugarCore.Abstractions;
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namespace Yi.Framework.AiHub.Application.Services;
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public class OpenApiService : ApplicationService
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{
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private readonly IHttpContextAccessor _httpContextAccessor;
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private readonly ILogger<OpenApiService> _logger;
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private readonly TokenManager _tokenManager;
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private readonly AiGateWayManager _aiGateWayManager;
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private readonly ISqlSugarRepository<AiModelEntity> _aiModelRepository;
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public OpenApiService(IHttpContextAccessor httpContextAccessor, ILogger<OpenApiService> logger,
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TokenManager tokenManager, AiGateWayManager aiGateWayManager,
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ISqlSugarRepository<AiModelEntity> aiModelRepository)
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{
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_httpContextAccessor = httpContextAccessor;
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_logger = logger;
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_tokenManager = tokenManager;
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_aiGateWayManager = aiGateWayManager;
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_aiModelRepository = aiModelRepository;
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}
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/// <summary>
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/// 对话
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/// </summary>
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/// <param name="input"></param>
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/// <param name="cancellationToken"></param>
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[HttpPost("openApi/v1/chat/completions")]
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public async Task ChatCompletionsAsync(ChatCompletionsInput input, CancellationToken cancellationToken)
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{
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//前面都是校验，后面才是真正的调用
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var httpContext = this._httpContextAccessor.HttpContext;
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var userId = await _tokenManager.GetUserIdAsync(GetTokenByHttpContext(httpContext));
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var history = new List<ChatMessage>();
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foreach (var aiChatContextDto in input.Messages)
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{
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if (aiChatContextDto.Role == "assistant")
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{
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history.Add(ChatMessage.CreateAssistantMessage(aiChatContextDto.Content));
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}
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else if (aiChatContextDto.Role == "user")
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{
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history.Add(ChatMessage.CreateUserMessage(aiChatContextDto.Content));
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}
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}
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//ai网关代理httpcontext
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await _aiGateWayManager.CompleteChatForHttpContextAsync(_httpContextAccessor.HttpContext, input.Model, history,
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userId, null, cancellationToken);
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}
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/// <summary>
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/// 获取模型列表
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/// </summary>
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/// <returns></returns>
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[HttpGet("openApi/v1/models")]
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public async Task<ModelGetOutput> ModelsAsync()
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{
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var data = await _aiModelRepository._DbQueryable
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.OrderByDescending(x => x.OrderNum)
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.Select(x => new ModelDataOutput
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{
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ModelId = x.ModelId,
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Object = "model",
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Owned_by = "organization-owner",
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Permission = new List<string>()
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}).ToListAsync();
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return new ModelGetOutput()
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{
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Data = data
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};
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}
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private string? GetTokenByHttpContext(HttpContext httpContext)
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{
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// 获取Authorization头
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string authHeader = httpContext.Request.Headers["Authorization"];
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// 检查是否有Bearer token
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if (authHeader != null && authHeader.StartsWith("Bearer "))
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{
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return authHeader.Substring("Bearer ".Length).Trim();
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}
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return null;
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}
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} |