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Fixed: Speed up track grouping

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Don't repeatedly calculate base directories and use simpler path
equality since we know paths come from the same source.
This commit is contained in:
ta264 2019-08-01 22:22:28 +01:00
parent 3c1b3434c7
commit 5f679c5f58
1 changed files with 10 additions and 6 deletions
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16
src/NzbDrone.Core/MediaFiles/TrackImport/Identification/TrackGroupingService.cs
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@ -5,6 +5,7 @@
using System.Text.RegularExpressions;
using NLog;
using NzbDrone.Common;
using NzbDrone.Common.Disk;
using NzbDrone.Common.Extensions;
using NzbDrone.Common.Instrumentation;
using NzbDrone.Core.Parser.Model;
@ -176,15 +177,16 @@ private IEnumerable<List<LocalTrack>> GroupTracksByDirectory(List<LocalTrack> tr
// and group them.
// we only bother doing this for the immediate parent directory.
var paths = tracks.Select(x => x.Path);
var folders = paths.Select(x => Path.GetDirectoryName(x)).Distinct().ToList();
folders.Sort();
var trackFolders = tracks.Select(x => Tuple.Create(x, Path.GetDirectoryName(x.Path)));
var distinctFolders = trackFolders.Select(x => x.Item2).Distinct().ToList();
distinctFolders.Sort();
_logger.Trace("Folders:\n{0}", string.Join("\n", folders));
_logger.Trace("Folders:\n{0}", string.Join("\n", distinctFolders));
Regex subdirRegex = null;
var output = new List<LocalTrack>();
foreach (var folder in folders)
foreach (var folder in distinctFolders)
{
if (subdirRegex != null)
{
@ -208,7 +210,9 @@ private IEnumerable<List<LocalTrack>> GroupTracksByDirectory(List<LocalTrack> tr
// reset and put current folder into output
subdirRegex = null;
output.AddRange(tracks.Where(x => PathEqualityComparer.Instance.Equals(Path.GetDirectoryName(x.Path), folder)));
var currentTracks = trackFolders.Where(x => x.Item2.Equals(folder, DiskProviderBase.PathStringComparison))
.Select(x => x.Item1);
output.AddRange(currentTracks);
// check if the start of another multi disc match
foreach (var marker in multiDiscMarkers)