422 lines
15 KiB
C#
422 lines
15 KiB
C#
using MAX.Plugins;
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using Microsoft.Extensions.DependencyInjection;
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using MAX.Core.DependencyInjection;
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using MAX.Framework.Commons;
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using MAX.Framework.Dtos;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Logging;
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using OpenSearch.Client;
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using OpenSearch.Net;
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using Store.Modules.CloudProduct.Dtos;
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using Store.Modules.CloudProduct.Enums;
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namespace Store.Modules.CloudProduct.Services
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{
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/// <summary>
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/// 用户收藏商品索引服务：负责收藏索引（Search:FavoritesIndexName）的
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/// 创建、写入、删除、重建与检索，索引文档由 user_goods_favorites 关联 goods 补全而来。
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/// </summary>
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public interface IUserFavoritesIndexService : ISingletonDependency
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{
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/// <summary>检查索引是否存在</summary>
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Task<bool> IndexExistsAsync();
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/// <summary>检查索引映射（分析器）是否符合当前服务要求</summary>
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Task<bool> IsIndexMappingHealthyAsync();
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/// <summary>创建索引（含 IK 分词映射；已存在且映射正常时跳过）</summary>
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Task<bool> CreateIndexAsync();
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/// <summary>删除并重建索引（映射统一，重建期间该索引不可查）</summary>
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Task<bool> ClearIndexAsync();
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/// <summary>批量写入收藏文档（存在则覆盖）</summary>
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Task IndexDocumentsAsync(IEnumerable<UserFavoritesSearchDocument> documents);
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/// <summary>按文档Id批量删除收藏文档</summary>
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Task DeleteDocumentsAsync(IEnumerable<string> documentIds);
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/// <summary>统计索引文档数</summary>
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Task<long> CountDocumentsAsync();
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/// <summary>按用户检索收藏商品（标题/销量/价格/类目/分组）</summary>
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Task<(long Total, List<UserFavoritesSearchDocument> Documents)> SearchAsync(UserFavoritesSearchRequest request, UserFavoritesSortBy sortBy);
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}
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internal class UserFavoritesIndexService : IUserFavoritesIndexService
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{
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private readonly string _nodeUrl;
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private readonly string _indexName;
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private readonly IOpenSearchClient _client = null!;
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private readonly ILogger<UserFavoritesIndexService> _logger;
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// 查询类操作（search/count/exists）统一超时
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private static readonly TimeSpan QueryTimeout = TimeSpan.FromSeconds(5);
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// 批量写入/建索引/删除索引等管理类操作超时（数据量大时需要更长）
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private static readonly TimeSpan AdminTimeout = TimeSpan.FromSeconds(30);
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public UserFavoritesIndexService([FromKeyedServices("CloudProduct")] PluginContext context, ILogger<UserFavoritesIndexService> logger)
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{
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var config = context.Configuration.GetSection("Search");
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_nodeUrl = config.GetValue<string>("Url") ?? "";
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_indexName = config.GetValue<string>("FavoritesIndexName") ?? "";
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_logger = logger;
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_client = CreateClient();
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}
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private IOpenSearchClient CreateClient()
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{
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var pool = new SingleNodeConnectionPool(new Uri(_nodeUrl));
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var settings = new ConnectionSettings(pool)
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.DefaultIndex(_indexName)
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.DefaultMappingFor<UserFavoritesSearchDocument>(m => m.IndexName(_indexName))
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.RequestTimeout(QueryTimeout)
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.MaxRetryTimeout(QueryTimeout)
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.PrettyJson()
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.DisableDirectStreaming();
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return new OpenSearchClient(settings);
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}
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/// <summary>
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/// ============ 1. 索引是否存在 ============
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/// </summary>
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public async Task<bool> IndexExistsAsync()
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{
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var response = await _client.Indices.ExistsAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(QueryTimeout)));
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return response.Exists;
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}
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/// <summary>
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/// ============ 2. 索引映射是否健康 ============
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/// </summary>
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public async Task<bool> IsIndexMappingHealthyAsync()
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{
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var getResponse = await _client.Indices.GetAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(QueryTimeout)));
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if (!getResponse.IsValid)
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{
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throw new AppException("读取收藏索引映射失败: " + getResponse.DebugInformation);
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}
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if (!getResponse.Indices.TryGetValue(_indexName, out var indexState))
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{
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return false;
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}
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var mapping = indexState.Mappings;
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if (mapping?.Properties == null
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|| !mapping.Properties.TryGetValue(new PropertyName("title"), out var property)
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|| property is not ITextProperty textProperty)
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{
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return false;
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}
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var indexAnalyzer = textProperty.Analyzer;
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var searchAnalyzer = textProperty.SearchAnalyzer;
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var usesIk = indexAnalyzer == "ik_max_word" && searchAnalyzer == "ik_smart";
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var usesStandard = indexAnalyzer == "standard" && searchAnalyzer == "standard";
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return usesIk || usesStandard;
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}
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/// <summary>
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/// ============ 3. 创建索引 ============
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/// </summary>
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public async Task<bool> CreateIndexAsync()
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{
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var existsResponse = await _client.Indices.ExistsAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout)));
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if (existsResponse.Exists)
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{
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if (await IsIndexMappingHealthyAsync())
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{
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return true;
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}
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_logger.LogWarning("收藏索引 [{Index}] 的映射不完整，正在重建...", _indexName);
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var deleteResponse = await _client.Indices.DeleteAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout)));
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if (!deleteResponse.IsValid)
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{
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throw new AppException("删除损坏的收藏索引失败: " + deleteResponse.DebugInformation);
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}
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}
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// 优先尝试使用 IK 中文分词（需集群安装 analysis-ik 插件）
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var createResponse = await TryCreateIndexAsync(useIk: true);
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if (!createResponse.IsValid)
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{
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_logger.LogWarning("IK 分词插件不可用，收藏索引已回退到 standard 分析器，中文分词将失效。");
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createResponse = await TryCreateIndexAsync(useIk: false);
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}
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if (!createResponse.IsValid)
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{
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throw new AppException("收藏索引创建失败: " + createResponse.DebugInformation);
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}
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_logger.LogInformation("收藏索引 [{Index}] 创建成功。", _indexName);
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return true;
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}
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private async Task<CreateIndexResponse> TryCreateIndexAsync(bool useIk)
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{
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var indexAnalyzer = useIk ? "ik_max_word" : "standard";
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var searchAnalyzer = useIk ? "ik_smart" : "standard";
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return await _client.Indices.CreateAsync(_indexName, c => c
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.Settings(s => s
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.NumberOfShards(1)
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.NumberOfReplicas(0)
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)
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.Map<UserFavoritesSearchDocument>(m => m
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.Properties(p => p
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.Keyword(k => k.Name(x => x.Id))
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.Number(n => n.Name(x => x.FavId).Type(NumberType.Long))
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.Keyword(k => k.Name(x => x.UserName))
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.Number(n => n.Name(x => x.GroupId).Type(NumberType.Integer))
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.Keyword(k => k.Name(x => x.GroupName))
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.Number(n => n.Name(x => x.GoodsId).Type(NumberType.Long))
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.Number(n => n.Name(x => x.Platform).Type(NumberType.Byte))
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.Text(t => t
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.Name(x => x.Title)
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.Analyzer(indexAnalyzer)
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.SearchAnalyzer(searchAnalyzer)
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)
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.Text(t => t.Name(x => x.ThumbUrl))
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.Number(n => n.Name(x => x.CatId1).Type(NumberType.Integer))
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.Number(n => n.Name(x => x.CatId2).Type(NumberType.Integer))
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.Number(n => n.Name(x => x.CatId3).Type(NumberType.Integer))
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.Number(n => n.Name(x => x.CatId4).Type(NumberType.Integer))
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.Number(n => n.Name(x => x.MinPrice).Type(NumberType.Long))
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.Number(n => n.Name(x => x.SoldQuantity).Type(NumberType.Integer))
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.Date(d => d.Name(x => x.CreatedAt))
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)
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)
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout))
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);
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}
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/// <summary>
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/// ============ 4. 删除并重建索引 ============
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/// </summary>
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public async Task<bool> ClearIndexAsync()
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{
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var existsResponse = await _client.Indices.ExistsAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(QueryTimeout)));
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if (!existsResponse.Exists)
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{
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return await CreateIndexAsync();
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}
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var deleteResponse = await _client.Indices.DeleteAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout)));
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if (!deleteResponse.IsValid)
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{
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throw new AppException($"删除收藏索引 {_indexName} 失败: " + deleteResponse.DebugInformation);
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}
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_logger.LogInformation("收藏索引 [{Index}] 已删除，准备重建。", _indexName);
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return await CreateIndexAsync();
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}
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private async Task RefreshIndexAsync()
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{
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var response = await _client.Indices.RefreshAsync(_indexName, d => d
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout)));
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if (!response.IsValid)
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{
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throw new AppException("刷新收藏索引失败: " + response.DebugInformation);
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}
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}
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/// <summary>
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/// ============ 5. 批量写入收藏文档（存在则覆盖） ============
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/// </summary>
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public async Task IndexDocumentsAsync(IEnumerable<UserFavoritesSearchDocument> documents)
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{
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if (documents == null) throw new ArgumentNullException(nameof(documents));
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var list = documents.Where(x => x != null && string.IsNullOrWhiteSpace(x.Id) == false).ToList();
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if (list.Count == 0) return;
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await CreateIndexAsync();
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var bulkResponse = await _client.BulkAsync(b => b
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.Index(_indexName)
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.IndexMany(list, (descriptor, doc) => descriptor.Id(doc.Id))
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.RequestConfiguration(r => r.RequestTimeout(AdminTimeout))
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);
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if (!bulkResponse.IsValid)
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{
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throw new AppException("批量写入收藏索引失败: " + bulkResponse.DebugInformation);
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}
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await RefreshIndexAsync();
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}
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/// <summary>
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/// ============ 6. 按文档Id批量删除收藏文档 ============
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/// </summary>
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public async Task DeleteDocumentsAsync(IEnumerable<string> documentIds)
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{
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var list = documentIds?.Where(x => string.IsNullOrWhiteSpace(x) == false).Distinct().ToList() ?? new List<string>();
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if (list.Count == 0) return;
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if (await IndexExistsAsync() == false)
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{
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return;
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}
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var response = await _client.BulkAsync(b =>
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{
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foreach (var id in list)
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{
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b.Delete<UserFavoritesSearchDocument>(d => d.Index(_indexName).Id(id));
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}
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b.RequestConfiguration(r => r.RequestTimeout(AdminTimeout));
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return b;
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});
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if (!response.IsValid)
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{
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throw new AppException("删除收藏索引文档失败: " + response.DebugInformation);
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}
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await RefreshIndexAsync();
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}
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/// <summary>
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/// ============ 7. 统计文档数 ============
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/// </summary>
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public async Task<long> CountDocumentsAsync()
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{
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var countResponse = await _client.CountAsync<UserFavoritesSearchDocument>(c => c
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.Index(_indexName)
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.RequestConfiguration(r => r.RequestTimeout(QueryTimeout))
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);
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if (!countResponse.IsValid)
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{
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throw new AppException("统计收藏索引失败: " + countResponse.DebugInformation);
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}
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return countResponse.Count;
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}
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/// <summary>
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/// ============ 8. 检索用户收藏商品（标题/价格/销量/类目/分组 + 排序 + 分页） ============
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/// </summary>
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public async Task<(long Total, List<UserFavoritesSearchDocument> Documents)> SearchAsync(UserFavoritesSearchRequest request, UserFavoritesSortBy sortBy)
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{
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if (request == null) throw new ArgumentNullException(nameof(request));
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if (string.IsNullOrWhiteSpace(request.UserName))
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{
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throw new AppException("用户名不能为空", ResultCode.ValidationError);
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}
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var keyword = request.Title;
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int? groupId = request.GroupId;
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var groupName = request.GroupName;
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int pageIndex = request.PageIndex;
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int pageSize = request.PageSize;
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if (pageIndex < 1) pageIndex = 1;
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if (pageSize < 1) pageSize = 20;
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if (pageSize > 2000) pageSize = 2000; // 避免深分页/单页过大拖垮性能
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var from = (pageIndex - 1) * pageSize;
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ISearchResponse<UserFavoritesSearchDocument> searchResponse;
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try
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{
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searchResponse = await _client.SearchAsync<UserFavoritesSearchDocument>(s => s
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.Index(_indexName)
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.Query(q => q
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.Bool(b =>
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{
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var filters = new List<Func<QueryContainerDescriptor<UserFavoritesSearchDocument>, QueryContainer>>();
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// 只检索当前用户自己的收藏 —— 放进 filters，避免被后面的 Filter 覆盖
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filters.Add(f => f.Term(t => t.Field(x => x.UserName).Value(request.UserName)));
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if (groupId.HasValue)
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{
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filters.Add(f => f.Term(t => t.Field(x => x.GroupId).Value(groupId.Value)));
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}
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else if (string.IsNullOrWhiteSpace(groupName) == false)
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{
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filters.Add(f => f.Term(t => t.Field(x => x.GroupName).Value(groupName)));
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}
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if (request.Platform.HasValue && request.Platform.Value > 0)
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{
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filters.Add(f => f.Term(t => t.Field(x => x.Platform).Value(request.Platform.Value)));
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}
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if (request.CatId1.HasValue) filters.Add(f => f.Term(t => t.Field(x => x.CatId1).Value(request.CatId1.Value)));
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if (request.CatId2.HasValue) filters.Add(f => f.Term(t => t.Field(x => x.CatId2).Value(request.CatId2.Value)));
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if (request.CatId3.HasValue) filters.Add(f => f.Term(t => t.Field(x => x.CatId3).Value(request.CatId3.Value)));
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if (request.CatId4.HasValue) filters.Add(f => f.Term(t => t.Field(x => x.CatId4).Value(request.CatId4.Value)));
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if (request.MinPrice.HasValue || request.MaxPrice.HasValue)
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{
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filters.Add(f => f.Range(r =>
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{
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var range = r.Field(x => x.MinPrice);
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if (request.MinPrice.HasValue) range = range.GreaterThanOrEquals(request.MinPrice.Value);
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if (request.MaxPrice.HasValue) range = range.LessThanOrEquals(request.MaxPrice.Value);
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return range;
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}));
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}
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if (request.MinSoldQuantity.HasValue || request.MaxSoldQuantity.HasValue)
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{
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filters.Add(f => f.Range(r =>
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{
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var range = r.Field(x => x.SoldQuantity);
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if (request.MinSoldQuantity.HasValue) range = range.GreaterThanOrEquals(request.MinSoldQuantity.Value);
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if (request.MaxSoldQuantity.HasValue) range = range.LessThanOrEquals(request.MaxSoldQuantity.Value);
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return range;
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}));
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}
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// 统一一次性应用所有 filter，避免覆盖
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b.Filter(filters.ToArray());
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if (string.IsNullOrWhiteSpace(keyword) == false)
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{
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b.Must(m => m.Match(mm => mm.Field(f => f.Title).Query(keyword)));
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}
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return b;
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})
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)
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.Sort(sort => sortBy switch
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{
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UserFavoritesSortBy.CreatedTimeAsc => sort.Ascending(f => f.CreatedAt),
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UserFavoritesSortBy.PriceAsc => sort.Ascending(f => f.MinPrice),
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UserFavoritesSortBy.PriceDesc => sort.Descending(f => f.MinPrice),
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UserFavoritesSortBy.SoldDesc => sort.Descending(f => f.SoldQuantity),
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_ => sort.Descending(f => f.CreatedAt)
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})
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.From(from)
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.Size(pageSize)
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.TrackTotalHits(true)
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.RequestConfiguration(r => r.RequestTimeout(QueryTimeout))
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);}
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catch (OpenSearchClientException ex) when (ex.Response?.Success == false)
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{
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throw new AppException($"收藏检索超时或失败（{QueryTimeout.TotalSeconds}秒）: " + ex.Message);
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}
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if (!searchResponse.IsValid)
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{
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throw new AppException("收藏检索失败: " + searchResponse.DebugInformation);
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}
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return (searchResponse.Total, searchResponse.Documents.ToList());
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}
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}
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} |