osu/osu.Game/Database/BeatmapDatabase.cs
2017-03-17 18:57:24 +09:00

360 lines
12 KiB
C#

// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using osu.Framework.Extensions;
using osu.Framework.Logging;
using osu.Framework.Platform;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.Beatmaps.IO;
using osu.Game.IPC;
using SQLite.Net;
using SQLiteNetExtensions.Extensions;
namespace osu.Game.Database
{
public class BeatmapDatabase
{
private SQLiteConnection connection { get; }
private Storage storage;
public event Action<BeatmapSetInfo> BeatmapSetAdded;
public event Action<BeatmapSetInfo> BeatmapSetRemoved;
// ReSharper disable once NotAccessedField.Local (we should keep a reference to this so it is not finalised)
private BeatmapIPCChannel ipc;
public BeatmapDatabase(Storage storage, IIpcHost importHost = null)
{
this.storage = storage;
if (importHost != null)
ipc = new BeatmapIPCChannel(importHost, this);
if (connection == null)
{
try
{
connection = prepareConnection();
deletePending();
}
catch (Exception e)
{
Logger.Error(e, @"Failed to initialise the beatmap database! Trying again with a clean database...");
storage.DeleteDatabase(@"beatmaps");
connection = prepareConnection();
}
}
}
private void deletePending()
{
foreach (var b in Query<BeatmapSetInfo>().Where(b => b.DeletePending))
{
try
{
storage.Delete(b.Path);
GetChildren(b, true);
foreach (var i in b.Beatmaps)
{
if (i.Metadata != null) connection.Delete(i.Metadata);
if (i.Difficulty != null) connection.Delete(i.Difficulty);
connection.Delete(i);
}
if (b.Metadata != null) connection.Delete(b.Metadata);
connection.Delete(b);
}
catch (Exception e)
{
Logger.Error(e, $@"Could not delete beatmap {b}");
}
}
//this is required because sqlite migrations don't work, initially inserting nulls into this field.
//see https://github.com/praeclarum/sqlite-net/issues/326
connection.Query<BeatmapSetInfo>("UPDATE BeatmapSetInfo SET DeletePending = 0 WHERE DeletePending IS NULL");
}
private SQLiteConnection prepareConnection()
{
var conn = storage.GetDatabase(@"beatmaps");
try
{
conn.CreateTable<BeatmapMetadata>();
conn.CreateTable<BeatmapDifficulty>();
conn.CreateTable<BeatmapSetInfo>();
conn.CreateTable<BeatmapInfo>();
}
catch
{
conn.Close();
throw;
}
return conn;
}
public void Reset()
{
foreach (var setInfo in Query<BeatmapSetInfo>())
{
if (storage.Exists(setInfo.Path))
storage.Delete(setInfo.Path);
}
connection.DeleteAll<BeatmapMetadata>();
connection.DeleteAll<BeatmapDifficulty>();
connection.DeleteAll<BeatmapSetInfo>();
connection.DeleteAll<BeatmapInfo>();
}
/// <summary>
/// Import multiple <see cref="BeatmapSetInfo"/> from <paramref name="paths"/>.
/// </summary>
/// <param name="paths">Multiple locations on disk</param>
public void Import(IEnumerable<string> paths)
{
foreach (string p in paths)
{
try
{
BeatmapSetInfo set = getBeatmapSet(p);
//If we have an ID then we already exist in the database.
if (set.ID == 0)
Import(new[] { set });
// We may or may not want to delete the file depending on where it is stored.
// e.g. reconstructing/repairing database with beatmaps from default storage.
// Also, not always a single file, i.e. for LegacyFilesystemReader
// TODO: Add a check to prevent files from storage to be deleted.
try
{
File.Delete(p);
}
catch (Exception e)
{
Logger.Error(e, $@"Could not delete file at {p}");
}
}
catch (Exception e)
{
e = e.InnerException ?? e;
Logger.Error(e, @"Could not import beatmap set");
}
}
}
/// <summary>
/// Import <see cref="BeatmapSetInfo"/> from <paramref name="path"/>.
/// </summary>
/// <param name="path">Location on disk</param>
public void Import(string path)
{
Import(new[] { path });
}
/// <summary>
/// Duplicates content from <paramref name="path"/> to storage and returns a representing <see cref="BeatmapSetInfo"/>.
/// </summary>
/// <param name="path">Content location</param>
/// <returns><see cref="BeatmapSetInfo"/></returns>
private BeatmapSetInfo getBeatmapSet(string path)
{
string hash = null;
BeatmapMetadata metadata;
using (var reader = ArchiveReader.GetReader(storage, path))
metadata = reader.ReadMetadata();
if (File.Exists(path)) // Not always the case, i.e. for LegacyFilesystemReader
{
using (var input = storage.GetStream(path))
{
hash = input.GetMd5Hash();
input.Seek(0, SeekOrigin.Begin);
path = Path.Combine(@"beatmaps", hash.Remove(1), hash.Remove(2), hash);
if (!storage.Exists(path))
using (var output = storage.GetStream(path, FileAccess.Write))
input.CopyTo(output);
}
}
var existing = connection.Table<BeatmapSetInfo>().FirstOrDefault(b => b.Hash == hash);
if (existing != null)
{
if (existing.DeletePending)
{
existing.DeletePending = false;
Update(existing, false);
BeatmapSetAdded?.Invoke(existing);
}
return existing;
}
var beatmapSet = new BeatmapSetInfo
{
OnlineBeatmapSetID = metadata.OnlineBeatmapSetID,
Beatmaps = new List<BeatmapInfo>(),
Path = path,
Hash = hash,
Metadata = metadata
};
using (var archive = ArchiveReader.GetReader(storage, path))
{
string[] mapNames = archive.BeatmapFilenames;
foreach (var name in mapNames)
using (var raw = archive.GetStream(name))
using (var ms = new MemoryStream()) //we need a memory stream so we can seek and shit
using (var sr = new StreamReader(ms))
{
raw.CopyTo(ms);
ms.Position = 0;
var decoder = BeatmapDecoder.GetDecoder(sr);
Beatmap beatmap = decoder.Decode(sr);
beatmap.BeatmapInfo.Path = name;
beatmap.BeatmapInfo.Hash = ms.GetMd5Hash();
// TODO: Diff beatmap metadata with set metadata and leave it here if necessary
beatmap.BeatmapInfo.Metadata = null;
beatmap.BeatmapInfo.StarDifficulty = beatmap.CalculateStarDifficulty();
beatmapSet.Beatmaps.Add(beatmap.BeatmapInfo);
}
beatmapSet.StoryboardFile = archive.StoryboardFilename;
}
return beatmapSet;
}
public void Import(IEnumerable<BeatmapSetInfo> beatmapSets)
{
lock (connection)
{
connection.BeginTransaction();
foreach (var s in beatmapSets)
{
connection.InsertWithChildren(s, true);
BeatmapSetAdded?.Invoke(s);
}
connection.Commit();
}
}
public void Delete(BeatmapSetInfo beatmapSet)
{
beatmapSet.DeletePending = true;
Update(beatmapSet, false);
BeatmapSetRemoved?.Invoke(beatmapSet);
}
public ArchiveReader GetReader(BeatmapSetInfo beatmapSet)
{
if (string.IsNullOrEmpty(beatmapSet.Path))
return null;
return ArchiveReader.GetReader(storage, beatmapSet.Path);
}
public BeatmapSetInfo GetBeatmapSet(int id)
{
return Query<BeatmapSetInfo>().FirstOrDefault(s => s.OnlineBeatmapSetID == id);
}
public WorkingBeatmap GetWorkingBeatmap(BeatmapInfo beatmapInfo, WorkingBeatmap previous = null, bool withStoryboard = false)
{
var beatmapSetInfo = Query<BeatmapSetInfo>().FirstOrDefault(s => s.ID == beatmapInfo.BeatmapSetInfoID);
//we need metadata
GetChildren(beatmapSetInfo);
if (beatmapSetInfo == null)
throw new InvalidOperationException($@"Beatmap set {beatmapInfo.BeatmapSetInfoID} is not in the local database.");
if (beatmapInfo.Metadata == null)
beatmapInfo.Metadata = beatmapSetInfo.Metadata;
WorkingBeatmap working = new DatabaseWorkingBeatmap(this, beatmapInfo, beatmapSetInfo, withStoryboard);
previous?.TransferTo(working);
return working;
}
public TableQuery<T> Query<T>() where T : class
{
return connection.Table<T>();
}
public T GetWithChildren<T>(object id) where T : class
{
return connection.GetWithChildren<T>(id);
}
public List<T> GetAllWithChildren<T>(Expression<Func<T, bool>> filter = null, bool recursive = true)
where T : class
{
return connection.GetAllWithChildren(filter, recursive);
}
public T GetChildren<T>(T item, bool recursive = false)
{
if (item == null) return default(T);
connection.GetChildren(item, recursive);
return item;
}
private readonly Type[] validTypes = {
typeof(BeatmapSetInfo),
typeof(BeatmapInfo),
typeof(BeatmapMetadata),
typeof(BeatmapDifficulty),
};
public void Update<T>(T record, bool cascade = true) where T : class
{
if (validTypes.All(t => t != typeof(T)))
throw new ArgumentException("Must be a type managed by BeatmapDatabase", nameof(T));
if (cascade)
connection.UpdateWithChildren(record);
else
connection.Update(record);
}
public bool Exists(BeatmapSetInfo beatmapSet) => storage.Exists(beatmapSet.Path);
private class DatabaseWorkingBeatmap : WorkingBeatmap
{
private readonly BeatmapDatabase database;
public DatabaseWorkingBeatmap(BeatmapDatabase database, BeatmapInfo beatmapInfo, BeatmapSetInfo beatmapSetInfo, bool withStoryboard = false)
: base(beatmapInfo, beatmapSetInfo, withStoryboard)
{
this.database = database;
}
protected override ArchiveReader GetReader() => database?.GetReader(BeatmapSetInfo);
}
}
}