55 lines
1.4 KiB
C#
55 lines
1.4 KiB
C#
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using System.Reactive;
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using System.Reactive.Linq;
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using System.Reactive.Subjects;
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using System.Reactive.Threading.Tasks;
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using CliWrap;
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namespace InnovEnergy.Lib.Utils.WIP;
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using Data = IReadOnlyList<Byte>;
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public class ObserverPipeSource : PipeSource, IObserver<Data>
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{
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private readonly IObservable<Data> _Observable;
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private readonly IObserver<Data> _Observer;
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public ObserverPipeSource()
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{
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var subject = new Subject<Data>();
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_Observer = subject;
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_Observable = subject
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.Synchronize() // make thread-safe
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.Publish()
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.RefCount();
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}
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public override Task CopyToAsync(Stream dest, CancellationToken ct = new CancellationToken())
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{
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return _Observable
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.Select(Push)
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.Concat()
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.ToTask(ct);
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IObservable<Unit> Push(Data data) => Observable.FromAsync(async () =>
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{
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if (ct.IsCancellationRequested)
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throw new Exception("Broken Pipe");
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await dest.WriteAsync(data.ToArray(), ct);
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await dest.FlushAsync(ct);
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return Unit.Default;
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});
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}
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public void OnCompleted() => _Observer.OnCompleted();
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public void OnError(Exception error) => _Observer.OnError(error);
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public void OnNext (Data value) => _Observer.OnNext(value);
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}
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