245 lines
7.3 KiB
C#
245 lines
7.3 KiB
C#
using System.Reactive.Linq;
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namespace InnovEnergy.Lib.Utils;
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public static class ObservableExceptionHandling
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{
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public static IObservable<Try<R>> Try<T, R>(this IObservable<T> src, Func<T, Task<R>> map)
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{
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return src.SelectMany(t => ExceptionHandling.Try(() => map(t)));
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}
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public static IObservable<Try<R>> Try<T, R>(this IObservable<T> src, Func<T, R> map)
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{
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return src.Select(t => ExceptionHandling.Try(() => map(t)));
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}
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public static IObservable<Try<R>> ThenTry<T, R>(this IObservable<Try<T>> src, Func<T, R> map)
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{
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return src.Select(t => ExceptionHandling.ThenTry(t, map));
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}
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// public static IObservable<T> Catch<T>(this IObservable<Try<T>> src, Func<Exception, T> onError)
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// {
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// return src.Select(t => ExceptionHandling.Catch(t, onError));
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// }
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// TODO: onError should be a func returning T
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// public static IObservable<T> Catch<T>(this IObservable<Try<T>> src, Action<Exception> onError)
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// {
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// return src
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// .OnErrorDo(onError)
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// .IgnoreErrors();
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// }
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public static IObservable<T> IgnoreErrors<T>(this IObservable<Try<T>> src)
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{
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return src
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.Where(t => !(t.Wrapped is Exception))
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.Select(t => (T) t.Wrapped);
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}
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public static IObservable<Try<T>> OnErrorDo<T>(this IObservable<Try<T>> src, Action<Exception> onError)
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{
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return src.Do(t=>
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{
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if (t.Wrapped is Exception e)
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onError(e);
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});
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}
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public static IObservable<Try<T>> Match<T>(this IObservable<Try<T>> src, Action<T> onValue, Action<Exception> onError)
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{
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return src.Do(t=>
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{
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if (t.Wrapped is Exception e)
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onError(e);
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else
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onValue((T) t.Wrapped);
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});
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}
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// public static IObservable<CanFail<R>> Try<T,R>(this IObservable<T> observable, Func<T,R> map)
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// {
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// return observable
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// .Select(e => CanFail.Try(() => map(e)));
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// }
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//
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// public static IObservable<CanFail<R>> Try<T,R>(this IObservable<CanFail<T>> observable, Func<T,R> map)
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// {
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// return observable
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// .Select(t => t.Select(map));
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// }
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//
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//
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// public static IObservable<CanFail<R>> TryAsync<T, R>(this IObservable<T> observable, Func<T, Task<R>> map)
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// {
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// return observable
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// .SelectMany(e => CanFail.TryAsync(() => map(e)));
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// }
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//
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//
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// public static IObservable<CanFail<R>> TryAsync<T,R>(this IObservable<CanFail<T>> observable,
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// Func<T,Task<R>> map)
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// {
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// return observable
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// .SelectMany(t => CanFail.SelectMany(t, map));
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// }
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//
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//
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// public static IObservable<CanFail<T>> OnErrorDo<T>(this IObservable<CanFail<T>> observable, Action<Exception> onError)
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// {
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// return observable
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// .Select(t =>
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// {
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// if (t is Failure<T> f)
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// onError(f.Error);
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//
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// return t;
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// });
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// }
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// public static IObservable<R> TryCatch<T,R,E>(this IObservable<T> observable,
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// Func<T,R> map,
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// Func<E,R> exceptionHandler)
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// where E : Exception
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// {
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// R TryMap(T i)
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// {
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// try
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// {
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// return map(i);
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// }
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// catch (E e)
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// {
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// return exceptionHandler(e);
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// }
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// }
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//
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// return observable.Select(TryMap);
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// }
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// public static IObservable<CanFail<R>> Try<T,R,E>(this IObservable<T> observable,
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// Func<T,R> map,
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// Func<E, CanFail<R>> exceptionHandler)
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// where E : Exception
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// {
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// CanFail<R> TryMap(T i)
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// {
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// try
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// {
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// return CanFail.Success(map(i));
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// }
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// catch (E e)
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// {
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// return exceptionHandler(e);
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// }
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// }
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//
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// return observable.Select(TryMap);
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// }
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// public static IObservable<R> TryAsync<T,R>(this IObservable<T> observable,
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// Func<T,Task<R>> map,
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// Action<Exception> onError)
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// {
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// async Task<Notification<R>> TryMap(T i)
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// {
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// try
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// {
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// return Notification.CreateOnNext(await map(i));
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// }
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// catch (Exception e)
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// {
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// onError(e);
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// return Notification.CreateOnError<R>(e);
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// }
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// }
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//
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// return observable
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// .SelectMany(TryMap)
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// .Where(n => n.Kind != NotificationKind.OnError)
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// .Dematerialize();
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// }
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// public static IObservable<R> Try<T,R>(this IObservable<T> observable, Func<T,R> map)
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// {
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// Notification<R> TryMap(T i)
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// {
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// try
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// {
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// return Notification.CreateOnNext(map(i));
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// }
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// catch (Exception e)
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// {
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// return Notification.CreateOnError<R>(e);
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// }
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// }
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//
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// return observable
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// .Select(TryMap)
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// .Where(n => n.Kind != NotificationKind.OnError)
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// .Dematerialize();
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// }
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//
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// public static IObservable<R> Try<T,R>(this IObservable<T> observable,
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// Func<T,R> map,
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// Action<Exception> onError)
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// {
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// Notification<R> TryMap(T i)
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// {
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// try
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// {
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// return Notification.CreateOnNext(map(i));
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// }
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// catch (Exception e)
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// {
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// onError(e);
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// return Notification.CreateOnError<R>(e);
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// }
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// }
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//
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// return observable
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// .Select(TryMap)
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// .Where(n => n.Kind != NotificationKind.OnError)
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// .Dematerialize();
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// }
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//
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// public static IObservable<R> Try<T,R>(this IObservable<T> observable,
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// Func<T,R> map,
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// Func<Exception,Boolean> ignoreException)
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// {
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// Notification<R> TryMap(T i)
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// {
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// try
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// {
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// return Notification.CreateOnNext(map(i));
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// }
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// catch (Exception e)
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// {
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// if (ignoreException(e))
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// return Notification.CreateOnError<R>(e);
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//
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// throw;
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//
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// // throw ex resets the stack trace (so your errors would appear to originate from HandleException)
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// // throw doesn't - the original offender would be preserved.
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// }
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// }
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//
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// return observable
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// .Select(TryMap)
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// .Where(n => n.Kind != NotificationKind.OnError)
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// .Dematerialize();
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// }
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} |