105 lines
4.5 KiB
C#
105 lines
4.5 KiB
C#
using System.Text.Json;
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namespace SHH.CameraSdk
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{
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public class FileStorageService : IStorageService
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{
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public int ProcessId { get; }
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private readonly string _baseDir;
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private readonly string _devicesPath;
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private readonly SemaphoreSlim _fileLock = new SemaphoreSlim(1, 1);
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// [关键修复] 配置序列化选项，解决“只存属性不存字段”的问题
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private readonly JsonSerializerOptions _jsonOptions = new JsonSerializerOptions
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{
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WriteIndented = true, // 格式化 JSON，让人眼可读
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IncludeFields = true, // [核心] 允许序列化 public int Id; 这种字段
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PropertyNameCaseInsensitive = true, // 忽略大小写差异
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NumberHandling = JsonNumberHandling.AllowReadingFromString // 允许 "8000" 读为 int 8000
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};
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public FileStorageService(int processId)
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{
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ProcessId = processId;
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_baseDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "App_Data", $"Process_{processId}");
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_devicesPath = Path.Combine(_baseDir, "devices.json");
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if (!Directory.Exists(_baseDir)) Directory.CreateDirectory(_baseDir);
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Console.WriteLine($"[Storage] 路径: {_devicesPath}");
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}
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public async Task SaveDevicesAsync(IEnumerable<VideoSourceConfig> configs)
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{
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await _fileLock.WaitAsync();
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try
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{
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// [调试] 打印正在保存的数量，确保 Manager 传过来的数据是对的
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// Console.WriteLine($"[Debug] 正在保存 {configs.Count()} 台设备...");
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var json = JsonSerializer.Serialize(configs, _jsonOptions);
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await File.WriteAllTextAsync(_devicesPath, json);
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// [调试] 打印部分 JSON 内容，验证是否为空对象 "{}"
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// if (json.Length < 200) Console.WriteLine($"[Debug] JSON 内容: {json}");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"[Storage] ❌ 保存配置失败: {ex.Message}");
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}
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finally
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{
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_fileLock.Release();
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}
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}
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public async Task<List<VideoSourceConfig>> LoadDevicesAsync()
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{
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if (!File.Exists(_devicesPath))
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{
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Console.WriteLine("[Storage] ⚠️ 配置文件不存在，将使用空列表");
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return new List<VideoSourceConfig>();
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}
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await _fileLock.WaitAsync();
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try
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{
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var json = await File.ReadAllTextAsync(_devicesPath);
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if (string.IsNullOrWhiteSpace(json)) return new List<VideoSourceConfig>();
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// [调试] 打印读取到的原始 JSON
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// Console.WriteLine($"[Debug] 读取文件内容: {json.Substring(0, Math.Min(json.Length, 100))}...");
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var list = JsonSerializer.Deserialize<List<VideoSourceConfig>>(json, _jsonOptions);
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// 二次校验：如果读出来列表不为空，但 ID 全是 0，说明序列化还是没对上
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if (list != null && list.Count > 0 && list[0].Id == 0 && list[0].Port == 0)
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{
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Console.WriteLine("[Storage] ⚠️ 警告：读取到设备，但字段似乎为空。请检查 VideoSourceConfig 是否使用了 private 属性？");
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}
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return list ?? new List<VideoSourceConfig>();
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}
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catch (Exception ex)
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{
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Console.WriteLine($"[Storage] ❌ 读取配置失败: {ex.Message}");
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// 出错时返回空列表，不要抛出异常，否则 StartAsync 会崩溃
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return new List<VideoSourceConfig>();
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}
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finally
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{
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_fileLock.Release();
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}
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}
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// ==================================================================
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// 日志部分 (保持空实现以免干扰)
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// ==================================================================
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public Task AppendSystemLogAsync(string action, string ip, string path) => Task.CompletedTask;
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public Task<List<string>> GetSystemLogsAsync(int count) => Task.FromResult(new List<string>());
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public Task AppendDeviceLogAsync(int deviceId, string message) => Task.CompletedTask;
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public Task<List<string>> GetDeviceLogsAsync(int deviceId, int count) => Task.FromResult(new List<string>());
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}
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} |