public void NotifiesOfSegmentWhenFileIsCreated()
{
//need to make this test
var file = Path.GetTempFileName();
var info = new FileInfo(file);
var refresher = new Subject<Unit>();
var segmenter = new FileSegmenter(info.WatchFile(refresher), 1000);
FileSegmentCollection result = null;
using (var indexer = segmenter.Segments.Subscribe(segment => result = segment))
{
result.Should().NotBeNull();
File.AppendAllLines(file,
Enumerable.Range(1, 10000).Select(i => $"This is line number {i.ToString("00000000")}").ToArray());
refresher.Once();
result.Should().NotBeNull();
result.Count.Should().BeGreaterOrEqualTo(2);
result.Segments.Select(fs => fs.Type).Should().Contain(FileSegmentType.Head);
result.Segments.Select(fs => fs.Type).Should().Contain(FileSegmentType.Tail);
result.FileLength.Should().Be(info.Length);
File.AppendAllLines(file, Enumerable.Range(101, 10).Select(i => $"{i}"));
refresher.Once();
info.Refresh();
result.FileLength.Should().Be(info.Length);
File.Delete(file);
}
File.Delete(file);
}
public static IObservable<FileSegmentCollection> WithSegments(this IObservable<FileNotification> source, int initialTail= 100000)
{
var shared = source.Replay(1).RefCount();
return Observable.Create<FileSegmentCollection>(observer =>
{
var filtered = source.Where(f=>f.Exists);
var segmenter = new FileSegmenter(filtered, initialTail);
return segmenter.Segments.SubscribeSafe(observer);
})
.TakeUntil(shared.Where(f => !f.Exists));
}
public static IObservable <FileSegmentCollection> WithSegments(this IObservable <FileNotification> source, int initialTail = 100000)
{
var shared = source.Replay(1).RefCount();
return(Observable.Create <FileSegmentCollection>(observer =>
{
var filtered = source.Where(f => f.Exists);
var segmenter = new FileSegmenter(filtered, initialTail);
return segmenter.Segments.SubscribeSafe(observer);
})
.TakeUntil(shared.Where(f => !f.Exists)));
}
public static IObservable <FileSegmentCollection> WithSegments(this IObservable <FileNotification> source, int initialTail = 100000)
{
return(source.Where(n => (n.NotificationType == FileNotificationType.Changed || n.NotificationType == FileNotificationType.CreatedOrOpened))
.Publish(shared =>
{
return Observable.Create <FileSegmentCollection>(observer =>
{
var segmenter = new FileSegmenter(shared, initialTail);
return segmenter.Segments.SubscribeSafe(observer);
});
}));
}