302 lines
13 KiB
C#
302 lines
13 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using LZ4;
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using MareSynchronos.API;
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using MareSynchronos.FileCacheDB;
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using MareSynchronos.Utils;
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using MareSynchronos.WebAPI.Utils;
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using Microsoft.AspNetCore.SignalR.Client;
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namespace MareSynchronos.WebAPI
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{
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public partial class ApiController
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{
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private readonly HashSet<string> _verifiedUploadedHashes;
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private int _downloadId = 0;
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public void CancelUpload()
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{
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if (_uploadCancellationTokenSource != null)
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{
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Logger.Debug("Cancelling upload");
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_uploadCancellationTokenSource?.Cancel();
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_mareHub!.SendAsync(Api.SendFileAbortUpload);
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CurrentUploads.Clear();
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}
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}
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public async Task DeleteAllMyFiles()
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{
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await _mareHub!.SendAsync(Api.SendFileDeleteAllFiles);
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}
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private async Task<string> DownloadFile(int downloadId, string hash, CancellationToken ct)
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{
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using WebClient wc = new();
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wc.Headers.Add("Authorization", SecretKey);
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DownloadProgressChangedEventHandler progChanged = (s, e) =>
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{
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try
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{
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CurrentDownloads[downloadId].Single(f => f.Hash == hash).Transferred = e.BytesReceived;
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}
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catch (Exception ex)
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{
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Logger.Warn("Could not set download progress for " + hash);
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Logger.Warn(ex.Message);
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Logger.Warn(ex.StackTrace ?? string.Empty);
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}
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};
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wc.DownloadProgressChanged += progChanged;
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string fileName = Path.GetTempFileName();
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var baseUri = new Uri(Regex.Replace(ApiUri, "^ws", "http"), UriKind.Absolute);
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var relativeUri = new Uri("cache/" + hash, UriKind.Relative);
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var fileUri = new Uri(baseUri, relativeUri);
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await wc.DownloadFileTaskAsync(fileUri, fileName);
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CurrentDownloads[downloadId].Single(f => f.Hash == hash).Transferred = CurrentDownloads[downloadId].Single(f => f.Hash == hash).Total;
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wc.DownloadProgressChanged -= progChanged;
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return fileName;
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}
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public int GetDownloadId() => _downloadId++;
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public async Task DownloadFiles(int currentDownloadId, List<FileReplacementDto> fileReplacementDto, CancellationToken ct)
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{
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Logger.Debug("Downloading files (Download ID " + currentDownloadId + ")");
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List<DownloadFileDto> downloadFileInfoFromService = new List<DownloadFileDto>();
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foreach (var file in fileReplacementDto)
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{
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downloadFileInfoFromService.Add(await _mareHub!.InvokeAsync<DownloadFileDto>(Api.InvokeFileGetFileSize, file.Hash, ct));
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}
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CurrentDownloads[currentDownloadId] = downloadFileInfoFromService.Distinct().Select(d => new DownloadFileTransfer(d))
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.Where(d => d.CanBeTransferred).ToList();
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foreach (var dto in downloadFileInfoFromService.Where(c => c.IsForbidden))
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{
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if (ForbiddenTransfers.All(f => f.Hash != dto.Hash))
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{
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ForbiddenTransfers.Add(new DownloadFileTransfer(dto));
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}
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}
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foreach (var file in CurrentDownloads[currentDownloadId].Where(f => f.CanBeTransferred))
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{
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var hash = file.Hash;
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var tempFile = await DownloadFile(currentDownloadId, hash, ct);
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if (ct.IsCancellationRequested)
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{
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File.Delete(tempFile);
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Logger.Debug("Detected cancellation, removing " + currentDownloadId);
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CurrentDownloads.Remove(currentDownloadId);
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break;
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}
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var tempFileData = await File.ReadAllBytesAsync(tempFile, ct);
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var extractedFile = LZ4Codec.Unwrap(tempFileData);
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File.Delete(tempFile);
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var filePath = Path.Combine(_pluginConfiguration.CacheFolder, file.Hash);
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await File.WriteAllBytesAsync(filePath, extractedFile, ct);
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var fi = new FileInfo(filePath);
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Func<DateTime> RandomDayFunc()
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{
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DateTime start = new DateTime(1995, 1, 1);
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Random gen = new Random();
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int range = (DateTime.Today - start).Days;
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return () => start.AddDays(gen.Next(range));
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}
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fi.CreationTime = RandomDayFunc().Invoke();
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fi.LastAccessTime = RandomDayFunc().Invoke();
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fi.LastWriteTime = RandomDayFunc().Invoke();
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}
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var allFilesInDb = false;
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while (!allFilesInDb && !ct.IsCancellationRequested)
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{
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await using (var db = new FileCacheContext())
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{
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allFilesInDb = CurrentDownloads[currentDownloadId]
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.Where(c => c.CanBeTransferred)
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.All(h => db.FileCaches.Any(f => f.Hash == h.Hash));
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}
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await Task.Delay(250, ct);
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}
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Logger.Debug("Download complete, removing " + currentDownloadId);
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CurrentDownloads.Remove(currentDownloadId);
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}
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public async Task PushCharacterData(CharacterCacheDto character, List<string> visibleCharacterIds)
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{
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if (!IsConnected || SecretKey == "-") return;
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Logger.Debug("Sending Character data to service " + ApiUri);
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CancelUpload();
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_uploadCancellationTokenSource = new CancellationTokenSource();
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var uploadToken = _uploadCancellationTokenSource.Token;
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Logger.Verbose("New Token Created");
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List<string> unverifiedUploadHashes = new();
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foreach (var item in character.FileReplacements.SelectMany(c => c.Value.Select(v => v.Hash).Distinct()).Distinct().ToList())
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{
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if (!_verifiedUploadedHashes.Contains(item))
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{
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unverifiedUploadHashes.Add(item);
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}
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}
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if (unverifiedUploadHashes.Any())
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{
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Logger.Debug("Verifying " + unverifiedUploadHashes.Count + " files");
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var filesToUpload = await _mareHub!.InvokeAsync<List<UploadFileDto>>(Api.InvokeFileSendFiles, unverifiedUploadHashes, uploadToken);
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foreach (var file in filesToUpload.Where(f => !f.IsForbidden))
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{
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await using var db = new FileCacheContext();
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try
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{
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CurrentUploads.Add(new UploadFileTransfer(file)
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{
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Total = new FileInfo(db.FileCaches.FirstOrDefault(f => f.Hash.ToLower() == file.Hash.ToLower())
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?.Filepath ?? string.Empty).Length
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});
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}
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catch (Exception ex)
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{
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Logger.Warn("Tried to request file " + file.Hash + " but file was not present");
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Logger.Warn(ex.StackTrace!);
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}
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}
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await using (var db = new FileCacheContext())
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{
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foreach (var file in filesToUpload.Where(c => c.IsForbidden))
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{
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if (ForbiddenTransfers.All(f => f.Hash != file.Hash))
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{
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ForbiddenTransfers.Add(new UploadFileTransfer(file)
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{
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LocalFile = db.FileCaches.FirstOrDefault(f => f.Hash == file.Hash)?.Filepath ?? string.Empty
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});
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}
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}
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}
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var totalSize = CurrentUploads.Sum(c => c.Total);
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Logger.Debug("Compressing and uploading files");
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foreach (var file in CurrentUploads.Where(f => f.CanBeTransferred && !f.IsTransferred).ToList())
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{
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Logger.Debug("Compressing and uploading " + file);
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var data = await GetCompressedFileData(file.Hash, uploadToken);
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CurrentUploads.Single(e => e.Hash == data.Item1).Total = data.Item2.Length;
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await UploadFile(data.Item2, file.Hash, uploadToken);
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if (!uploadToken.IsCancellationRequested) continue;
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Logger.Warn("Cancel in filesToUpload loop detected");
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CurrentUploads.Clear();
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break;
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}
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if (CurrentUploads.Any())
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{
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var compressedSize = CurrentUploads.Sum(c => c.Total);
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Logger.Debug($"Compressed {totalSize} to {compressedSize} ({(compressedSize / (double)totalSize):P2})");
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}
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Logger.Debug("Upload tasks complete, waiting for server to confirm");
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var anyUploadsOpen = await _mareHub!.InvokeAsync<bool>(Api.InvokeFileIsUploadFinished, uploadToken);
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Logger.Debug("Uploads open: " + anyUploadsOpen);
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while (anyUploadsOpen && !uploadToken.IsCancellationRequested)
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{
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anyUploadsOpen = await _mareHub!.InvokeAsync<bool>(Api.InvokeFileIsUploadFinished, uploadToken);
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await Task.Delay(TimeSpan.FromSeconds(0.5), uploadToken);
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Logger.Debug("Waiting for uploads to finish");
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}
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foreach (var item in unverifiedUploadHashes)
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{
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_verifiedUploadedHashes.Add(item);
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}
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CurrentUploads.Clear();
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}
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else
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{
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Logger.Debug("All files already verified");
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}
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if (!uploadToken.IsCancellationRequested)
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{
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Logger.Info("Pushing character data for " + character.GetHashCode() + " to " + string.Join(", ", visibleCharacterIds));
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StringBuilder sb = new StringBuilder();
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foreach (var item in character.FileReplacements)
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{
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sb.AppendLine($"FileReplacements for {item.Key}: {item.Value.Count}");
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}
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foreach (var item in character.GlamourerData)
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{
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sb.AppendLine($"GlamourerData for {item.Key}: {!string.IsNullOrEmpty(item.Value)}");
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}
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Logger.Debug("Chara data contained: " + Environment.NewLine + sb.ToString());
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await _mareHub!.InvokeAsync(Api.InvokeUserPushCharacterDataToVisibleClients, character, visibleCharacterIds, uploadToken);
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}
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else
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{
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Logger.Warn("=== Upload operation was cancelled ===");
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}
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Logger.Verbose("Upload complete for " + character.GetHashCode());
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_uploadCancellationTokenSource = null;
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}
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private async Task<(string, byte[])> GetCompressedFileData(string fileHash, CancellationToken uploadToken)
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{
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await using var db = new FileCacheContext();
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var fileCache = db.FileCaches.First(f => f.Hash == fileHash);
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return (fileHash, LZ4Codec.WrapHC(await File.ReadAllBytesAsync(fileCache.Filepath, uploadToken), 0,
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(int)new FileInfo(fileCache.Filepath).Length));
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}
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private async Task UploadFile(byte[] compressedFile, string fileHash, CancellationToken uploadToken)
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{
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if (uploadToken.IsCancellationRequested) return;
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async IAsyncEnumerable<byte[]> AsyncFileData([EnumeratorCancellation] CancellationToken token)
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{
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var chunkSize = 1024 * 512; // 512kb
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using var ms = new MemoryStream(compressedFile);
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var buffer = new byte[chunkSize];
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int bytesRead;
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while ((bytesRead = await ms.ReadAsync(buffer, 0, chunkSize, token)) > 0 && !token.IsCancellationRequested)
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{
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CurrentUploads.Single(f => f.Hash == fileHash).Transferred += bytesRead;
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token.ThrowIfCancellationRequested();
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yield return bytesRead == chunkSize ? buffer.ToArray() : buffer.Take(bytesRead).ToArray();
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}
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}
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await _mareHub!.SendAsync(Api.SendFileUploadFileStreamAsync, fileHash, AsyncFileData(uploadToken), uploadToken);
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}
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public void CancelDownload(int downloadId)
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{
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CurrentDownloads.Remove(downloadId);
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}
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}
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}
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