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Code Issues Releases Wiki Activity

Rewrite TopLocalRank to use realm subscriptions

Browse Source 
This addresses the number one performance concern with realm (when
entering song select). Previous logic was causing instantiation and
property reads of every score in the database due to the `AsEnumerable`
specfication.
This commit is contained in:
Dean Herbert 2022-01-17 18:48:11 +09:00
parent d10d657073
commit 27ea37c690
1 changed files with 24 additions and 51 deletions
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75
osu.Game/Screens/Select/Carousel/TopLocalRank.cs
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@ -6,9 +6,9 @@ using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Threading;
using osu.Game.Beatmaps;
using osu.Game.Database;
using osu.Game.Models;
using osu.Game.Online.API;
using osu.Game.Online.Leaderboards;
using osu.Game.Rulesets;
@ -30,72 +30,45 @@ namespace osu.Game.Screens.Select.Carousel
[Resolved]
private IAPIProvider api { get; set; }
private IDisposable scoreSubscription;
private bool rankUpdatePending;
public TopLocalRank(BeatmapInfo beatmapInfo)
: base(null)
{
this.beatmapInfo = beatmapInfo;
}
[BackgroundDependencyLoader]
private void load()
{
ruleset.ValueChanged += _ => fetchAndLoadTopScore();
fetchAndLoadTopScore();
}
protected override void LoadComplete()
{
base.LoadComplete();
scoreSubscription = realmFactory.Context.All<ScoreInfo>()
.Filter($"{nameof(ScoreInfo.BeatmapInfo)}.{nameof(BeatmapInfo.ID)} = $0", beatmapInfo.ID)
.QueryAsyncWithNotifications((_, changes, ___) =>
{
if (changes == null)
return;
fetchTopScoreRank();
});
}
private IDisposable scoreSubscription;
private ScheduledDelegate scheduledRankUpdate;
private void fetchAndLoadTopScore()
{
// TODO: this lookup likely isn't required, we can use the results of the subscription directly.
var rank = fetchTopScoreRank();
scheduledRankUpdate = Scheduler.Add(() =>
ruleset.BindValueChanged(_ =>
{
Rank = rank;
rankUpdatePending = true;
// Required since presence is changed via IsPresent override
Invalidate(Invalidation.Presence);
});
scoreSubscription?.Dispose();
scoreSubscription = realmFactory.Context.All<ScoreInfo>()
.Filter($"{nameof(ScoreInfo.User)}.{nameof(RealmUser.OnlineID)} == $0"
+ $"&& {nameof(ScoreInfo.BeatmapInfo)}.{nameof(BeatmapInfo.ID)} == $1"
+ $"&& {nameof(ScoreInfo.Ruleset)}.{nameof(RulesetInfo.ShortName)} == $2"
+ $"&& {nameof(ScoreInfo.DeletePending)} == false", api.LocalUser.Value.Id, beatmapInfo.ID, ruleset.Value.ShortName)
.OrderByDescending(s => s.TotalScore)
.QueryAsyncWithNotifications((items, changes, ___) =>
{
if (changes == null)
rankUpdatePending = false;
Rank = items.FirstOrDefault()?.Rank;
});
}, true);
}
// We're present if a rank is set, or if there is a pending rank update (IsPresent = true is required for the scheduler to run).
public override bool IsPresent => base.IsPresent && (Rank != null || scheduledRankUpdate?.Completed == false);
private ScoreRank? fetchTopScoreRank()
{
if (realmFactory == null || beatmapInfo == null || ruleset?.Value == null || api?.LocalUser.Value == null)
return null;
using (var realm = realmFactory.CreateContext())
{
return realm.All<ScoreInfo>()
.AsEnumerable()
// TODO: update to use a realm filter directly (or at least figure out the beatmap part to reduce scope).
.Where(s => s.UserID == api.LocalUser.Value.Id && s.BeatmapInfoID == beatmapInfo.ID && s.RulesetID == ruleset.Value.ID && !s.DeletePending)
.OrderByDescending(s => s.TotalScore)
.FirstOrDefault()
?.Rank;
}
}
public override bool IsPresent => base.IsPresent && (Rank != null || rankUpdatePending);
protected override void Dispose(bool isDisposing)
{