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@ -185,7 +185,7 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="progress">The progress.</param>
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/// <returns>Task{Artist[]}.</returns>
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private async Task<ConcurrentBag<Artist>> GetAllArtists(IEnumerable<Audio> allSongs, CancellationToken cancellationToken, IProgress<double> progress)
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private async Task<List<Artist>> GetAllArtists(IEnumerable<Audio> allSongs, CancellationToken cancellationToken, IProgress<double> progress)
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{
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var allArtists = allSongs
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.SelectMany(i =>
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@ -203,60 +203,36 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
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.Distinct(StringComparer.OrdinalIgnoreCase)
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.ToList();
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const int maxTasks = 3;
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var tasks = new List<Task>();
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var returnArtists = new ConcurrentBag<Artist>();
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var returnArtists = new List<Artist>(allArtists.Count);
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var numComplete = 0;
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var numArtists = allArtists.Count;
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foreach (var artist in allArtists)
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{
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if (tasks.Count > maxTasks)
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{
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await Task.WhenAll(tasks).ConfigureAwait(false);
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tasks.Clear();
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// Safe cancellation point, when there are no pending tasks
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cancellationToken.ThrowIfCancellationRequested();
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}
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// Avoid accessing the foreach variable within the closure
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var currentArtist = artist;
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cancellationToken.ThrowIfCancellationRequested();
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tasks.Add(Task.Run(async () =>
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try
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{
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cancellationToken.ThrowIfCancellationRequested();
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try
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{
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var artistItem = _libraryManager.GetArtist(currentArtist);
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var artistItem = _libraryManager.GetArtist(artist);
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await artistItem.RefreshMetadata(cancellationToken).ConfigureAwait(false);
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await artistItem.RefreshMetadata(cancellationToken).ConfigureAwait(false);
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returnArtists.Add(artistItem);
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}
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catch (IOException ex)
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{
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_logger.ErrorException("Error validating Artist {0}", ex, currentArtist);
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}
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returnArtists.Add(artistItem);
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}
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catch (IOException ex)
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{
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_logger.ErrorException("Error validating Artist {0}", ex, artist);
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}
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// Update progress
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lock (progress)
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{
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numComplete++;
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double percent = numComplete;
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percent /= numArtists;
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// Update progress
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numComplete++;
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double percent = numComplete;
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percent /= numArtists;
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progress.Report(100 * percent);
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}
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}));
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progress.Report(100 * percent);
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}
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await Task.WhenAll(tasks).ConfigureAwait(false);
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return returnArtists;
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}
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