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Code Issues Releases Wiki Activity

Update local metadata lookup cache more often

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As proposed in
https://github.com/ppy/osu/issues/27332#issuecomment-1962308306.
This commit is contained in:
Bartłomiej Dach 2024-05-02 16:08:09 +02:00
parent 555305bf7f
commit 802666e621
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1 changed files with 48 additions and 7 deletions
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55
osu.Game/Beatmaps/LocalCachedBeatmapMetadataSource.cs
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@ -44,11 +44,34 @@ namespace osu.Game.Beatmaps
this.storage = storage;
// avoid downloading / using cache for unit tests.
if (!DebugUtils.IsNUnitRunning && !storage.Exists(cache_database_name))
if (shouldFetchCache())
prepareLocalCache();
}
private bool shouldFetchCache()
{
// avoid downloading / using cache for unit tests.
if (DebugUtils.IsNUnitRunning)
return false;
if (!storage.Exists(cache_database_name))
{
log(@"Fetching local cache because it does not exist.");
return true;
}
// periodically update the cache to include newer beatmaps.
var fileInfo = new FileInfo(storage.GetFullPath(cache_database_name));
if (fileInfo.LastWriteTime < DateTime.Now.AddMonths(-1))
{
log($@"Refetching local cache because it was last written to on {fileInfo.LastWriteTime}.");
return true;
}
return false;
}
public bool Available =>
// no download in progress.
cacheDownloadRequest == null
@ -124,6 +147,8 @@ namespace osu.Game.Beatmaps
private void prepareLocalCache()
{
bool isRefetch = storage.Exists(cache_database_name);
string cacheFilePath = storage.GetFullPath(cache_database_name);
string compressedCacheFilePath = $@"{cacheFilePath}.bz2";
@ -132,9 +157,15 @@ namespace osu.Game.Beatmaps
cacheDownloadRequest.Failed += ex =>
{
File.Delete(compressedCacheFilePath);
File.Delete(cacheFilePath);
Logger.Log($@"{nameof(BeatmapUpdaterMetadataLookup)}'s online cache download failed: {ex}", LoggingTarget.Database);
// don't clobber the cache when refetching if the download didn't succeed. seems excessive.
// consequently, also null the download request to allow the existing cache to be used (see `Available`).
if (isRefetch)
cacheDownloadRequest = null;
else
File.Delete(cacheFilePath);
log($@"Online cache download failed: {ex}");
};
cacheDownloadRequest.Finished += () =>
@ -143,15 +174,22 @@ namespace osu.Game.Beatmaps
{
using (var stream = File.OpenRead(cacheDownloadRequest.Filename))
using (var outStream = File.OpenWrite(cacheFilePath))
using (var bz2 = new BZip2Stream(stream, CompressionMode.Decompress, false))
bz2.CopyTo(outStream);
{
// ensure to clobber any and all existing data to avoid accidental corruption.
outStream.SetLength(0);
using (var bz2 = new BZip2Stream(stream, CompressionMode.Decompress, false))
bz2.CopyTo(outStream);
}
// set to null on completion to allow lookups to begin using the new source
cacheDownloadRequest = null;
log(@"Local cache fetch completed successfully.");
}
catch (Exception ex)
{
Logger.Log($@"{nameof(LocalCachedBeatmapMetadataSource)}'s online cache extraction failed: {ex}", LoggingTarget.Database);
log($@"Online cache extraction failed: {ex}");
// at this point clobber the cache regardless of whether we're refetching, because by this point who knows what state the cache file is in.
File.Delete(cacheFilePath);
}
finally
@ -173,6 +211,9 @@ namespace osu.Game.Beatmaps
});
}
private static void log(string message)
=> Logger.Log($@"[{nameof(LocalCachedBeatmapMetadataSource)}] {message}", LoggingTarget.Database);
private void logForModel(BeatmapSetInfo set, string message) =>
RealmArchiveModelImporter<BeatmapSetInfo>.LogForModel(set, $@"[{nameof(LocalCachedBeatmapMetadataSource)}] {message}");