justme
72a5e5b839
- new projects WebDrop.FileApi (file service), WebDrop.FileProtocol (shared tickets and receipts) and WebDrop.Sync (WebDAV) - file content of any size goes to the file service; chat, avatars and space structure stay on the main backend - tickets issued by the main backend, receipts by the file service, deletion queue and daily reconciliation - daily database snapshot and file sync to external storage (OpenList/WebDAV) with a 30 day retention - reorganize Core, Storage and Api into feature folders (namespaces unchanged) - web client uploads file frames to the file service and reads them with tickets
29 lines
1.3 KiB
C#
29 lines
1.3 KiB
C#
using WebDrop.FileProtocol;
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namespace WebDrop.Core;
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/// <summary>给客户端的文件服务入口:地址 + 一张短期票据</summary>
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public sealed record FileGrant(string Url, string Ticket, long ExpiresAt);
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/// <summary>
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/// 主后端和文件服务之间的接口。关闭时(默认)所有帧仍然存在主后端自己的存储里,行为和以前完全一样;
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/// 打开后,文件的内容(文件域的对象,不分大小)由客户端直接传给文件服务,主后端只登记元数据和摘要;聊天、头像、目录仍在主后端。
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/// </summary>
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public interface IFileGateway
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{
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bool Enabled { get; }
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/// <summary>客户端拿到的文件服务根地址(经反向隧道对外的那个)</summary>
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string PublicUrl { get; }
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FileGrant Issue(FileOp op, Id16 channel, Id16 item, uint from, long nowMs);
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bool TryVerifyReceipt(string? token, long nowMs, out FileReceipt receipt);
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}
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public sealed class NoFileGateway : IFileGateway
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{
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public static readonly NoFileGateway Instance = new();
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public bool Enabled => false;
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public string PublicUrl => "";
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public FileGrant Issue(FileOp op, Id16 channel, Id16 item, uint from, long nowMs) => throw new WebDropException(ErrorCode.NotFound);
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public bool TryVerifyReceipt(string? token, long nowMs, out FileReceipt receipt) { receipt = null!; return false; }
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}
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