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Hook up fswatcher to csv parser, needs proper filename parsing.

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This commit is contained in:
Torben Nehmer
2024-09-18 20:34:30 +02:00
parent 802180a26e
commit 275e6de228
6 changed files with 82 additions and 65 deletions
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4
Stars Assistant/App.axaml.cs
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@@ -3,6 +3,7 @@ using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;
using StarsAssistant.ViewModels;
using StarsAssistant.Views;
using Splat;
namespace StarsAssistant;
@@ -23,6 +24,9 @@ public partial class App : Application
};
}
var csvloader = Locator.Current.GetService<Services.CSVDataLoader>()!;
csvloader.StartPlanetCSVWatcher();
base.OnFrameworkInitializationCompleted();
}
}

20
Stars Assistant/CSV/PlanetLoader.cs
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@@ -66,19 +66,25 @@ public class PlanetLoader
r = db.Race.Find(owner.Key);
if (r == null)
{
r = new()
{
Name = owner.Key
};
r = new() { Name = owner.Key };
db.Add(r);
}
}
foreach (Planet csvp in owner)
{
Model.Planet p = new Model.Planet{ Name = csvp.Name };
csvp.UpdateDbPlanet(p);
db.Add(p);
Model.Planet? p = db.Planet.Find(csvp.Name);
if (p == null)
{
p = new() { Name = csvp.Name };
csvp.UpdateDbPlanet(p);
db.Add(p);
}
else
{
csvp.UpdateDbPlanet(p);
db.Update(p);
}
}
db.SaveChanges();
}

48
Stars Assistant/Helpers/FsWatcher.cs
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@@ -3,28 +3,8 @@ using System.Reactive.Concurrency;
namespace StarsAssistant.Helpers;
public class FsWatcher
public static class FsWatcher
{
/// <summary>
/// Throttle a FileSystemObserver and eliminate all duplicates.
/// </summary>
/// <remarks>
/// Curtesy of https://endjin.com/blog/2024/05/observe-file-system-changes-with-rx-dotnet
/// </remarks>
/// <param name="watcher">An observer created with <c>ObserveFileSystem</c></param>
/// <param name="inactivitySeconds">Throttling window, defaults to 1 second.</param>
/// <param name="scheduler">Scheduler to user for throttling, default is set by <c>Quiescent</c></param>
/// <returns>A throttled observer with duplicate elimination.</returns>
public static IObservable<IEnumerable<FileSystemEventArgs>> ThrottleAndDistinctObserver (
IObservable<FileSystemEventArgs> watcher,
int inactivitySeconds = 1,
IScheduler? scheduler = null)
{
return watcher
.Quiescent(TimeSpan.FromSeconds(inactivitySeconds), scheduler)
.Select(changes => changes.DistinctBy(x => (x.ChangeType, x.FullPath)));
}
/// <summary>
/// Helper to convert a FileSystemWatcher into an obervable stream. See FileSystemWatcher
/// documentation for further details on the parameters.
@@ -52,6 +32,7 @@ public class FsWatcher
if (filters != null)
foreach (string filter in filters)
fsw.Filters.Add(filter);
if (notifyFilter != null)
fsw.NotifyFilter = (NotifyFilters) notifyFilter;
fsw.EnableRaisingEvents = true;
@@ -90,4 +71,29 @@ public class FsWatcher
.RefCount();
}
/// <summary>
/// Throttle a FileSystemObserver and eliminate all duplicates.
/// </summary>
/// <remarks>
/// Curtesy of https://endjin.com/blog/2024/05/observe-file-system-changes-with-rx-dotnet
/// </remarks>
/// <param name="watcher">An observer created with <c>ObserveFileSystem</c></param>
/// <param name="inactivitySeconds">Throttling window, defaults to 1 second.</param>
/// <param name="scheduler">Scheduler to user for throttling, default is set by <c>Quiescent</c></param>
/// <returns>A throttled observer with duplicate elimination.</returns>
public static IObservable<FileSystemEventArgs> ThrottleAndDistinct (
this IObservable<FileSystemEventArgs> watcher,
int inactivitySeconds = 1,
IScheduler? scheduler = null)
{
return watcher
.Quiescent(TimeSpan.FromSeconds(inactivitySeconds), scheduler)
.SelectMany(
changes => changes
.DistinctBy(x => (x.ChangeType, x.FullPath))
.ToObservable()
)
;
}
}

20
Stars Assistant/Helpers/RxExtensions.cs
View File

@@ -34,24 +34,4 @@ public static class RxExtensions
return src.Buffer(zeroCrossings);
}
/// <summary>
/// Throttle a FileSystemObserver and eliminate all duplicates.
/// </summary>
/// <remarks>
/// Curtesy of https://endjin.com/blog/2024/05/observe-file-system-changes-with-rx-dotnet
/// </remarks>
/// <param name="watcher">An observer created with <c>ObserveFileSystem</c></param>
/// <param name="inactivitySeconds">Throttling window, defaults to 1 second.</param>
/// <param name="scheduler">Scheduler to user for throttling, default is set by <c>Quiescent</c></param>
/// <returns>A throttled observer with duplicate elimination.</returns>
public static IObservable<IEnumerable<FileSystemEventArgs>> ThrottleAndDistinct (
this IObservable<FileSystemEventArgs> watcher,
int inactivitySeconds = 1,
IScheduler? scheduler = null)
{
return watcher
.Quiescent(TimeSpan.FromSeconds(inactivitySeconds), scheduler)
.Select(changes => changes.DistinctBy(x => (x.ChangeType, x.FullPath)));
}
}

4
Stars Assistant/Program.cs
View File

@@ -22,6 +22,9 @@ sealed class Program
{
ModeDetector.OverrideModeDetector(Splat.ModeDetection.Mode.Run);
var logger = new ConsoleLogger() { Level = LogLevel.Debug };
Locator.CurrentMutable.RegisterConstant(logger, typeof(ILogger));
Services.Game g = new()
{
BaseName = "GOINGTH",
@@ -31,6 +34,7 @@ sealed class Program
Locator.CurrentMutable.RegisterConstant(g, typeof(Services.Game));
Locator.CurrentMutable.RegisterConstant(new Services.CSVDataLoader(), typeof(Services.CSVDataLoader));
Locator.CurrentMutable.Register(() => new StarsDatabase(g.DatabaseFileName), typeof(StarsDatabase));
Locator.CurrentMutable.RegisterConstant(new Services.CSVDataLoader(), typeof(Services.CSVDataLoader));
__createTestData();

51
Stars Assistant/Services/CSVDataLoader.cs
View File

@@ -1,41 +1,58 @@
using System;
using System.IO;
using System.Reactive.Linq;
using System.Text.RegularExpressions;
using ReactiveUI;
using Splat;
using StarsAssistant.Helpers;
namespace StarsAssistant.Services;
public class CSVDataLoader
public partial class CSVDataLoader : IEnableLogger
{
/// <summary>
/// Reference to the game metadata, retrieved by DI
/// </summary>
protected Services.Game Game = Locator.Current.GetService<Services.Game>()!;
public void CSVDataLoader()
[GeneratedRegex(@".*\.(?<type>[pf])(?<player>\d)+$")]
private static partial Regex MyRegex();
protected Regex FileTypeRegEx = MyRegex();
public CSVDataLoader()
{
}
public void StartPlanetCSVWatcher()
{
// TODO: which scheduler for Throttle?
var watcher = FsWatcher
.ObserveFileSystem(Game.GamePath, new string[] { Game.PlanetFileSearchPattern });
.ThrottleAndDistinct(2);
/*
watcher.Subscribe(x =>
{
Console.WriteLine($"{DateTime.Now.ToLongTimeString()} got {x.Count()} events:");
// string[] filters = { "*.p*", "*.f*", "*.map" };
foreach (var fsEvent in x)
{
Console.WriteLine($"{DateTime.Now.ToLongTimeString()} {i++} {fsEvent.FullPath} - {fsEvent.ChangeType}");
}
});
*/
var watcher = FsWatcher
.ObserveFileSystem(Game.GamePath, [ Game.PlanetFileSearchPattern ])
.ThrottleAndDistinct(2, RxApp.TaskpoolScheduler)
.Log(this, $"{DateTime.Now.ToLongTimeString()} FsEvent", fsEvent => $"{fsEvent.FullPath} {fsEvent.ChangeType}")
.ObserveOn(RxApp.TaskpoolScheduler);
watcher.Subscribe(fsEvent => this.LoadPlanetFile(fsEvent.FullPath));
}
protected void LoadPlanetFile(string fileName)
{
Match m = FileTypeRegEx.Match(fileName);
if (! m.Success)
{
this.Log().Error($"Failed to parse {fileName} to identify what we are looking at. Ignoring file.");
return;
}
string type = m.Groups["type"].Value;
string player = m.Groups["player"].Value;
this.Log().Debug($"Got file type {type} for player {player}");
var loader = new CSV.PlanetLoader();
loader.ImportForRace(Model.Race.Player);
}
}