36 lines
1.0 KiB
C#
36 lines
1.0 KiB
C#
namespace Salmon.Core.Depth;
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public abstract class Persistence
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{
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/// <summary>
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/// Must be thread safe
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/// Must return immediately
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/// </summary>
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/// <param name="key">May not be null</param>
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/// <param name="value"></param>
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public virtual void PushStateChange(string subject, string predicate, object? value, DateTime when)
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{
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Task.Run(async () =>
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{
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try
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{
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var old = await GetLastValue(subject, predicate);
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if(old != value)
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await RegisterStateChange(subject, predicate, when, value);
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}catch (Exception ex)
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{
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ExceptionCatched(ex);
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}
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}).ConfigureAwait(false);
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}
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public abstract Task<object> GetLastValue(string subject, string predicate);
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protected abstract Task RegisterStateChange(string subject, string predicate, DateTime when, object? value);
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protected virtual void ExceptionCatched(Exception e)
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{
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Console.WriteLine(e.ToString());
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}
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}
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