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@ -21,6 +21,7 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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private readonly IEventStore eventStore; |
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private readonly ILogger<EventConsumerProcessor> log; |
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private readonly AsyncLock asyncLock = new AsyncLock(); |
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private readonly RetryWindow logWindow = new RetryWindow(TimeSpan.FromSeconds(10), 0); |
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private IEventSubscription? currentSubscription; |
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public EventConsumerState State |
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@ -73,9 +74,9 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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} |
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public virtual async ValueTask OnNextAsync(IEventSubscription subscription, ParsedEvents @event) |
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public virtual ValueTask OnNextAsync(IEventSubscription subscription, ParsedEvents @event) |
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{ |
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await UpdateAsync(async () => |
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return UpdateAsync(async () => |
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{ |
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if (!ReferenceEquals(subscription, currentSubscription)) |
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{ |
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@ -83,14 +84,13 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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await DispatchAsync(@event.Events); |
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State = State.Handled(@event.Position, @event.Events.Count); |
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}, State.Position); |
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} |
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public virtual async ValueTask OnErrorAsync(IEventSubscription subscription, Exception exception) |
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public virtual ValueTask OnErrorAsync(IEventSubscription subscription, Exception exception) |
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{ |
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await UpdateAsync(() => |
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return UpdateAsync(() => |
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{ |
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if (!ReferenceEquals(subscription, currentSubscription)) |
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{ |
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@ -98,12 +98,16 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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Unsubscribe(); |
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State = State.Stopped(exception); |
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if (logWindow.CanRetryAfterFailure()) |
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{ |
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log.LogError(exception, "Failed to handle event."); |
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} |
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}, State.Position); |
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} |
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public virtual Task ActivateAsync() |
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public virtual ValueTask ActivateAsync() |
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{ |
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return UpdateAsync(() => |
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{ |
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@ -120,7 +124,7 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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}, State.Position); |
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} |
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public virtual Task StartAsync() |
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public virtual ValueTask StartAsync() |
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{ |
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return UpdateAsync(() => |
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{ |
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@ -130,12 +134,11 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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Subscribe(); |
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State = State.Started(); |
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}, State.Position); |
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} |
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public virtual Task StopAsync() |
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public virtual ValueTask StopAsync() |
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{ |
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return UpdateAsync(() => |
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{ |
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@ -145,7 +148,6 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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Unsubscribe(); |
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State = State.Stopped(); |
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}, State.Position); |
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} |
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@ -164,7 +166,6 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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await ClearAsync(); |
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State = EventConsumerState.Initial; |
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Subscribe(); |
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}, State.Position); |
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} |
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@ -177,7 +178,7 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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} |
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} |
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private Task UpdateAsync(Action action, string? position, [CallerMemberName] string? caller = null) |
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private ValueTask UpdateAsync(Action action, string? position, [CallerMemberName] string? caller = null) |
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{ |
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return UpdateAsync(() => |
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{ |
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@ -187,7 +188,7 @@ public class EventConsumerProcessor : IEventSubscriber<ParsedEvents> |
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}, position, caller); |
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} |
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private async Task UpdateAsync(Func<Task> action, string? position, [CallerMemberName] string? caller = null) |
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private async ValueTask UpdateAsync(Func<Task> action, string? position, [CallerMemberName] string? caller = null) |
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{ |
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// We do not want to deal with concurrency in this class, therefore we just use a lock.
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using (await asyncLock.EnterAsync()) |
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Sebastian Stehle
8 months ago