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osu-lazer/osu.Game/Beatmaps/BeatmapOnlineLookupQueue.cs
2021-10-21 19:14:31 +09:00

223 lines
8.8 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Data.Sqlite;
using osu.Framework.Development;
using osu.Framework.IO.Network;
using osu.Framework.Logging;
using osu.Framework.Platform;
using osu.Framework.Testing;
using osu.Framework.Threading;
using osu.Game.Database;
using osu.Game.Online.API;
using osu.Game.Online.API.Requests;
using SharpCompress.Compressors;
using SharpCompress.Compressors.BZip2;
namespace osu.Game.Beatmaps
{
/// <summary>
/// A component which handles population of online IDs for beatmaps using a two part lookup procedure.
/// </summary>
/// <remarks>
/// On creating the component, a copy of a database containing metadata for a large subset of beatmaps (stored to <see cref="cache_database_name"/>) will be downloaded if not already present locally.
/// This will always be checked before doing a second online query to get required metadata.
/// </remarks>
[ExcludeFromDynamicCompile]
public class BeatmapOnlineLookupQueue : IDisposable
{
private readonly IAPIProvider api;
private readonly Storage storage;
private const int update_queue_request_concurrency = 4;
private readonly ThreadedTaskScheduler updateScheduler = new ThreadedTaskScheduler(update_queue_request_concurrency, nameof(BeatmapOnlineLookupQueue));
private FileWebRequest cacheDownloadRequest;
private const string cache_database_name = "online.db";
public BeatmapOnlineLookupQueue(IAPIProvider api, Storage storage)
{
this.api = api;
this.storage = storage;
// avoid downloading / using cache for unit tests.
if (!DebugUtils.IsNUnitRunning && !storage.Exists(cache_database_name))
prepareLocalCache();
}
public Task UpdateAsync(BeatmapSetInfo beatmapSet, CancellationToken cancellationToken)
{
return Task.WhenAll(beatmapSet.Beatmaps.Select(b => UpdateAsync(beatmapSet, b, cancellationToken)).ToArray());
}
// todo: expose this when we need to do individual difficulty lookups.
protected Task UpdateAsync(BeatmapSetInfo beatmapSet, BeatmapInfo beatmapInfo, CancellationToken cancellationToken)
=> Task.Factory.StartNew(() => lookup(beatmapSet, beatmapInfo), cancellationToken, TaskCreationOptions.HideScheduler | TaskCreationOptions.RunContinuationsAsynchronously, updateScheduler);
private void lookup(BeatmapSetInfo set, BeatmapInfo beatmapInfo)
{
if (checkLocalCache(set, beatmapInfo))
return;
if (api?.State.Value != APIState.Online)
return;
var req = new GetBeatmapRequest(beatmapInfo);
req.Failure += fail;
try
{
// intentionally blocking to limit web request concurrency
api.Perform(req);
var res = req.Response;
if (res != null)
{
beatmapInfo.Status = res.Status;
beatmapInfo.BeatmapSet.Status = res.BeatmapSet?.Status ?? BeatmapSetOnlineStatus.None;
beatmapInfo.BeatmapSet.OnlineBeatmapSetID = res.OnlineBeatmapSetID;
beatmapInfo.OnlineBeatmapID = res.OnlineID;
if (beatmapInfo.Metadata != null)
beatmapInfo.Metadata.AuthorID = res.AuthorID;
if (beatmapInfo.BeatmapSet.Metadata != null)
beatmapInfo.BeatmapSet.Metadata.AuthorID = res.AuthorID;
logForModel(set, $"Online retrieval mapped {beatmapInfo} to {res.OnlineBeatmapSetID} / {res.OnlineID}.");
}
}
catch (Exception e)
{
fail(e);
}
void fail(Exception e)
{
beatmapInfo.OnlineBeatmapID = null;
logForModel(set, $"Online retrieval failed for {beatmapInfo} ({e.Message})");
}
}
private void prepareLocalCache()
{
string cacheFilePath = storage.GetFullPath(cache_database_name);
string compressedCacheFilePath = $"{cacheFilePath}.bz2";
cacheDownloadRequest = new FileWebRequest(compressedCacheFilePath, $"https://assets.ppy.sh/client-resources/{cache_database_name}.bz2?{DateTimeOffset.UtcNow:yyyyMMdd}");
cacheDownloadRequest.Failed += ex =>
{
File.Delete(compressedCacheFilePath);
File.Delete(cacheFilePath);
Logger.Log($"{nameof(BeatmapOnlineLookupQueue)}'s online cache download failed: {ex}", LoggingTarget.Database);
};
cacheDownloadRequest.Finished += () =>
{
try
{
using (var stream = File.OpenRead(cacheDownloadRequest.Filename))
using (var outStream = File.OpenWrite(cacheFilePath))
using (var bz2 = new BZip2Stream(stream, CompressionMode.Decompress, false))
bz2.CopyTo(outStream);
// set to null on completion to allow lookups to begin using the new source
cacheDownloadRequest = null;
}
catch (Exception ex)
{
Logger.Log($"{nameof(BeatmapOnlineLookupQueue)}'s online cache extraction failed: {ex}", LoggingTarget.Database);
File.Delete(cacheFilePath);
}
finally
{
File.Delete(compressedCacheFilePath);
}
};
cacheDownloadRequest.PerformAsync();
}
private bool checkLocalCache(BeatmapSetInfo set, BeatmapInfo beatmapInfo)
{
// download is in progress (or was, and failed).
if (cacheDownloadRequest != null)
return false;
// database is unavailable.
if (!storage.Exists(cache_database_name))
return false;
if (string.IsNullOrEmpty(beatmapInfo.MD5Hash)
&& string.IsNullOrEmpty(beatmapInfo.Path)
&& beatmapInfo.OnlineBeatmapID == null)
return false;
try
{
using (var db = new SqliteConnection(DatabaseContextFactory.CreateDatabaseConnectionString("online.db", storage)))
{
db.Open();
using (var cmd = db.CreateCommand())
{
cmd.CommandText = "SELECT beatmapset_id, beatmap_id, approved, user_id FROM osu_beatmaps WHERE checksum = @MD5Hash OR beatmap_id = @OnlineBeatmapID OR filename = @Path";
cmd.Parameters.Add(new SqliteParameter("@MD5Hash", beatmapInfo.MD5Hash));
cmd.Parameters.Add(new SqliteParameter("@OnlineBeatmapID", beatmapInfo.OnlineBeatmapID ?? (object)DBNull.Value));
cmd.Parameters.Add(new SqliteParameter("@Path", beatmapInfo.Path));
using (var reader = cmd.ExecuteReader())
{
if (reader.Read())
{
var status = (BeatmapSetOnlineStatus)reader.GetByte(2);
beatmapInfo.Status = status;
beatmapInfo.BeatmapSet.Status = status;
beatmapInfo.BeatmapSet.OnlineBeatmapSetID = reader.GetInt32(0);
beatmapInfo.OnlineBeatmapID = reader.GetInt32(1);
if (beatmapInfo.Metadata != null)
beatmapInfo.Metadata.AuthorID = reader.GetInt32(3);
if (beatmapInfo.BeatmapSet.Metadata != null)
beatmapInfo.BeatmapSet.Metadata.AuthorID = reader.GetInt32(3);
logForModel(set, $"Cached local retrieval for {beatmapInfo}.");
return true;
}
}
}
}
}
catch (Exception ex)
{
logForModel(set, $"Cached local retrieval for {beatmapInfo} failed with {ex}.");
}
return false;
}
private void logForModel(BeatmapSetInfo set, string message) =>
ArchiveModelManager<BeatmapSetInfo, BeatmapSetFileInfo>.LogForModel(set, $"[{nameof(BeatmapOnlineLookupQueue)}] {message}");
public void Dispose()
{
cacheDownloadRequest?.Dispose();
updateScheduler?.Dispose();
}
}
}