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osu-lazer/osu.Game/Beatmaps/BeatmapManager.cs

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// 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.
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Threading;
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using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using osu.Framework.Audio;
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using osu.Framework.Audio.Track;
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using osu.Framework.Extensions;
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using osu.Framework.Graphics.Textures;
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using osu.Framework.Graphics.Video;
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using osu.Framework.Lists;
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using osu.Framework.Logging;
using osu.Framework.Platform;
using osu.Framework.Threading;
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using osu.Game.Beatmaps.Formats;
using osu.Game.Database;
using osu.Game.IO;
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using osu.Game.IO.Archives;
using osu.Game.Online.API;
using osu.Game.Online.API.Requests;
using osu.Game.Rulesets;
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using osu.Game.Rulesets.Objects.Types;
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namespace osu.Game.Beatmaps
{
/// <summary>
/// Handles the storage and retrieval of Beatmaps/WorkingBeatmaps.
/// </summary>
public partial class BeatmapManager : DownloadableArchiveModelManager<BeatmapSetInfo, BeatmapSetFileInfo>
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{
/// <summary>
/// Fired when a single difficulty has been hidden.
/// </summary>
public event Action<BeatmapInfo> BeatmapHidden;
/// <summary>
/// Fired when a single difficulty has been restored.
/// </summary>
public event Action<BeatmapInfo> BeatmapRestored;
/// <summary>
/// A default representation of a WorkingBeatmap to use when no beatmap is available.
/// </summary>
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public readonly WorkingBeatmap DefaultBeatmap;
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public override string[] HandledExtensions => new[] { ".osz" };
protected override string[] HashableFileTypes => new[] { ".osu" };
protected override string ImportFromStablePath => "Songs";
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private readonly RulesetStore rulesets;
private readonly BeatmapStore beatmaps;
private readonly AudioManager audioManager;
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private readonly GameHost host;
private readonly BeatmapUpdateQueue updateQueue;
public BeatmapManager(Storage storage, IDatabaseContextFactory contextFactory, RulesetStore rulesets, IAPIProvider api, AudioManager audioManager, GameHost host = null,
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WorkingBeatmap defaultBeatmap = null)
: base(storage, contextFactory, api, new BeatmapStore(contextFactory), host)
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{
this.rulesets = rulesets;
this.audioManager = audioManager;
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this.host = host;
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DefaultBeatmap = defaultBeatmap;
beatmaps = (BeatmapStore)ModelStore;
beatmaps.BeatmapHidden += b => BeatmapHidden?.Invoke(b);
beatmaps.BeatmapRestored += b => BeatmapRestored?.Invoke(b);
updateQueue = new BeatmapUpdateQueue(api);
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}
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protected override ArchiveDownloadRequest<BeatmapSetInfo> CreateDownloadRequest(BeatmapSetInfo set, bool minimiseDownloadSize) =>
new DownloadBeatmapSetRequest(set, minimiseDownloadSize);
protected override bool ShouldDeleteArchive(string path) => Path.GetExtension(path)?.ToLowerInvariant() == ".osz";
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protected override Task Populate(BeatmapSetInfo beatmapSet, ArchiveReader archive, CancellationToken cancellationToken = default)
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{
if (archive != null)
beatmapSet.Beatmaps = createBeatmapDifficulties(beatmapSet.Files);
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foreach (BeatmapInfo b in beatmapSet.Beatmaps)
{
// remove metadata from difficulties where it matches the set
if (beatmapSet.Metadata.Equals(b.Metadata))
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b.Metadata = null;
b.BeatmapSet = beatmapSet;
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}
validateOnlineIds(beatmapSet);
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return updateQueue.UpdateAsync(beatmapSet, cancellationToken);
}
protected override void PreImport(BeatmapSetInfo beatmapSet)
{
if (beatmapSet.Beatmaps.Any(b => b.BaseDifficulty == null))
throw new InvalidOperationException($"Cannot import {nameof(BeatmapInfo)} with null {nameof(BeatmapInfo.BaseDifficulty)}.");
// check if a set already exists with the same online id, delete if it does.
if (beatmapSet.OnlineBeatmapSetID != null)
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{
var existingOnlineId = beatmaps.ConsumableItems.FirstOrDefault(b => b.OnlineBeatmapSetID == beatmapSet.OnlineBeatmapSetID);
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if (existingOnlineId != null)
{
Delete(existingOnlineId);
beatmaps.PurgeDeletable(s => s.ID == existingOnlineId.ID);
LogForModel(beatmapSet, $"Found existing beatmap set with same OnlineBeatmapSetID ({beatmapSet.OnlineBeatmapSetID}). It has been purged.");
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}
}
}
private void validateOnlineIds(BeatmapSetInfo beatmapSet)
{
var beatmapIds = beatmapSet.Beatmaps.Where(b => b.OnlineBeatmapID.HasValue).Select(b => b.OnlineBeatmapID).ToList();
// ensure all IDs are unique
if (beatmapIds.GroupBy(b => b).Any(g => g.Count() > 1))
{
resetIds();
return;
}
// find any existing beatmaps in the database that have matching online ids
var existingBeatmaps = QueryBeatmaps(b => beatmapIds.Contains(b.OnlineBeatmapID)).ToList();
if (existingBeatmaps.Count > 0)
{
// reset the import ids (to force a re-fetch) *unless* they match the candidate CheckForExisting set.
// we can ignore the case where the new ids are contained by the CheckForExisting set as it will either be used (import skipped) or deleted.
var existing = CheckForExisting(beatmapSet);
if (existing == null || existingBeatmaps.Any(b => !existing.Beatmaps.Contains(b)))
resetIds();
}
void resetIds() => beatmapSet.Beatmaps.ForEach(b => b.OnlineBeatmapID = null);
}
protected override bool CheckLocalAvailability(BeatmapSetInfo model, IQueryable<BeatmapSetInfo> items) => items.Any(b => b.OnlineBeatmapSetID == model.OnlineBeatmapSetID);
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/// <summary>
/// Delete a beatmap difficulty.
/// </summary>
/// <param name="beatmap">The beatmap difficulty to hide.</param>
public void Hide(BeatmapInfo beatmap) => beatmaps.Hide(beatmap);
/// <summary>
/// Restore a beatmap difficulty.
/// </summary>
/// <param name="beatmap">The beatmap difficulty to restore.</param>
public void Restore(BeatmapInfo beatmap) => beatmaps.Restore(beatmap);
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private readonly WeakList<WorkingBeatmap> workingCache = new WeakList<WorkingBeatmap>();
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/// <summary>
/// Retrieve a <see cref="WorkingBeatmap"/> instance for the provided <see cref="BeatmapInfo"/>
/// </summary>
/// <param name="beatmapInfo">The beatmap to lookup.</param>
/// <param name="previous">The currently loaded <see cref="WorkingBeatmap"/>. Allows for optimisation where elements are shared with the new beatmap. May be returned if beatmapInfo requested matches</param>
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/// <returns>A <see cref="WorkingBeatmap"/> instance correlating to the provided <see cref="BeatmapInfo"/>.</returns>
public WorkingBeatmap GetWorkingBeatmap(BeatmapInfo beatmapInfo, WorkingBeatmap previous = null)
{
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if (beatmapInfo?.ID > 0 && previous != null && previous.BeatmapInfo?.ID == beatmapInfo.ID)
return previous;
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if (beatmapInfo?.BeatmapSet == null || beatmapInfo == DefaultBeatmap?.BeatmapInfo)
return DefaultBeatmap;
lock (workingCache)
{
var working = workingCache.FirstOrDefault(w => w.BeatmapInfo?.ID == beatmapInfo.ID);
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if (working == null)
{
if (beatmapInfo.Metadata == null)
beatmapInfo.Metadata = beatmapInfo.BeatmapSet.Metadata;
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workingCache.Add(working = new BeatmapManagerWorkingBeatmap(Files.Store,
new LargeTextureStore(host?.CreateTextureLoaderStore(Files.Store)), beatmapInfo, audioManager));
}
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previous?.TransferTo(working);
return working;
}
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}
/// <summary>
/// Perform a lookup query on available <see cref="BeatmapSetInfo"/>s.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>The first result for the provided query, or null if no results were found.</returns>
public BeatmapSetInfo QueryBeatmapSet(Expression<Func<BeatmapSetInfo, bool>> query) => beatmaps.ConsumableItems.AsNoTracking().FirstOrDefault(query);
protected override bool CanUndelete(BeatmapSetInfo existing, BeatmapSetInfo import)
{
if (!base.CanUndelete(existing, import))
return false;
var existingIds = existing.Beatmaps.Select(b => b.OnlineBeatmapID).OrderBy(i => i);
var importIds = import.Beatmaps.Select(b => b.OnlineBeatmapID).OrderBy(i => i);
// force re-import if we are not in a sane state.
return existing.OnlineBeatmapSetID == import.OnlineBeatmapSetID && existingIds.SequenceEqual(importIds);
}
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/// <summary>
/// Returns a list of all usable <see cref="BeatmapSetInfo"/>s.
/// </summary>
/// <returns>A list of available <see cref="BeatmapSetInfo"/>.</returns>
public List<BeatmapSetInfo> GetAllUsableBeatmapSets() => GetAllUsableBeatmapSetsEnumerable().ToList();
/// <summary>
/// Returns a list of all usable <see cref="BeatmapSetInfo"/>s.
/// </summary>
/// <returns>A list of available <see cref="BeatmapSetInfo"/>.</returns>
public IQueryable<BeatmapSetInfo> GetAllUsableBeatmapSetsEnumerable() => beatmaps.ConsumableItems.Where(s => !s.DeletePending && !s.Protected);
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/// <summary>
/// Perform a lookup query on available <see cref="BeatmapSetInfo"/>s.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>Results from the provided query.</returns>
public IEnumerable<BeatmapSetInfo> QueryBeatmapSets(Expression<Func<BeatmapSetInfo, bool>> query) => beatmaps.ConsumableItems.AsNoTracking().Where(query);
/// <summary>
/// Perform a lookup query on available <see cref="BeatmapInfo"/>s.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>The first result for the provided query, or null if no results were found.</returns>
public BeatmapInfo QueryBeatmap(Expression<Func<BeatmapInfo, bool>> query) => beatmaps.Beatmaps.AsNoTracking().FirstOrDefault(query);
/// <summary>
/// Perform a lookup query on available <see cref="BeatmapInfo"/>s.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>Results from the provided query.</returns>
public IQueryable<BeatmapInfo> QueryBeatmaps(Expression<Func<BeatmapInfo, bool>> query) => beatmaps.Beatmaps.AsNoTracking().Where(query);
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protected override string HumanisedModelName => "beatmap";
protected override BeatmapSetInfo CreateModel(ArchiveReader reader)
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{
// let's make sure there are actually .osu files to import.
string mapName = reader.Filenames.FirstOrDefault(f => f.EndsWith(".osu"));
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if (string.IsNullOrEmpty(mapName))
{
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Logger.Log($"No beatmap files found in the beatmap archive ({reader.Name}).", LoggingTarget.Database);
return null;
}
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Beatmap beatmap;
using (var stream = new LineBufferedReader(reader.GetStream(mapName)))
beatmap = Decoder.GetDecoder<Beatmap>(stream).Decode(stream);
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return new BeatmapSetInfo
{
OnlineBeatmapSetID = beatmap.BeatmapInfo.BeatmapSet?.OnlineBeatmapSetID,
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Beatmaps = new List<BeatmapInfo>(),
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Metadata = beatmap.Metadata,
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DateAdded = DateTimeOffset.UtcNow
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};
}
/// <summary>
/// Create all required <see cref="BeatmapInfo"/>s for the provided archive.
/// </summary>
private List<BeatmapInfo> createBeatmapDifficulties(List<BeatmapSetFileInfo> files)
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{
var beatmapInfos = new List<BeatmapInfo>();
foreach (var file in files.Where(f => f.Filename.EndsWith(".osu")))
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{
using (var raw = Files.Store.GetStream(file.FileInfo.StoragePath))
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using (var ms = new MemoryStream()) //we need a memory stream so we can seek
using (var sr = new LineBufferedReader(ms))
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{
raw.CopyTo(ms);
ms.Position = 0;
var decoder = Decoder.GetDecoder<Beatmap>(sr);
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IBeatmap beatmap = decoder.Decode(sr);
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beatmap.BeatmapInfo.Path = file.Filename;
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beatmap.BeatmapInfo.Hash = ms.ComputeSHA2Hash();
beatmap.BeatmapInfo.MD5Hash = ms.ComputeMD5Hash();
var ruleset = rulesets.GetRuleset(beatmap.BeatmapInfo.RulesetID);
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beatmap.BeatmapInfo.Ruleset = ruleset;
// TODO: this should be done in a better place once we actually need to dynamically update it.
beatmap.BeatmapInfo.StarDifficulty = ruleset?.CreateInstance().CreateDifficultyCalculator(new DummyConversionBeatmap(beatmap)).Calculate().StarRating ?? 0;
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beatmap.BeatmapInfo.Length = calculateLength(beatmap);
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beatmap.BeatmapInfo.BPM = beatmap.ControlPointInfo.BPMMode;
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beatmapInfos.Add(beatmap.BeatmapInfo);
}
}
return beatmapInfos;
}
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private double calculateLength(IBeatmap b)
{
if (!b.HitObjects.Any())
return 0;
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var lastObject = b.HitObjects.Last();
double endTime = (lastObject as IHasEndTime)?.EndTime ?? lastObject.StartTime;
double startTime = b.HitObjects.First().StartTime;
return endTime - startTime;
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}
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/// <summary>
/// A dummy WorkingBeatmap for the purpose of retrieving a beatmap for star difficulty calculation.
/// </summary>
private class DummyConversionBeatmap : WorkingBeatmap
{
private readonly IBeatmap beatmap;
public DummyConversionBeatmap(IBeatmap beatmap)
: base(beatmap.BeatmapInfo, null)
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{
this.beatmap = beatmap;
}
protected override IBeatmap GetBeatmap() => beatmap;
protected override Texture GetBackground() => null;
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protected override VideoSprite GetVideo() => null;
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protected override Track GetTrack() => null;
}
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private class BeatmapUpdateQueue
{
private readonly IAPIProvider api;
private const int update_queue_request_concurrency = 4;
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private readonly ThreadedTaskScheduler updateScheduler = new ThreadedTaskScheduler(update_queue_request_concurrency, nameof(BeatmapUpdateQueue));
public BeatmapUpdateQueue(IAPIProvider api)
{
this.api = api;
}
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public Task UpdateAsync(BeatmapSetInfo beatmapSet, CancellationToken cancellationToken)
{
if (api?.State != APIState.Online)
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return Task.CompletedTask;
LogForModel(beatmapSet, "Performing online lookups...");
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return Task.WhenAll(beatmapSet.Beatmaps.Select(b => UpdateAsync(beatmapSet, b, cancellationToken)).ToArray());
}
// todo: expose this when we need to do individual difficulty lookups.
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protected Task UpdateAsync(BeatmapSetInfo beatmapSet, BeatmapInfo beatmap, CancellationToken cancellationToken)
=> Task.Factory.StartNew(() => update(beatmapSet, beatmap), cancellationToken, TaskCreationOptions.HideScheduler, updateScheduler);
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private void update(BeatmapSetInfo set, BeatmapInfo beatmap)
{
if (api?.State != APIState.Online)
return;
var req = new GetBeatmapRequest(beatmap);
req.Success += res =>
{
LogForModel(set, $"Online retrieval mapped {beatmap} to {res.OnlineBeatmapSetID} / {res.OnlineBeatmapID}.");
beatmap.Status = res.Status;
beatmap.BeatmapSet.Status = res.BeatmapSet.Status;
beatmap.BeatmapSet.OnlineBeatmapSetID = res.OnlineBeatmapSetID;
beatmap.OnlineBeatmapID = res.OnlineBeatmapID;
};
req.Failure += e => { LogForModel(set, $"Online retrieval failed for {beatmap} ({e.Message})"); };
// intentionally blocking to limit web request concurrency
req.Perform(api);
}
}
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}
}