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182192e0ba
they can be triggered using the api api/command/
62 lines
2.2 KiB
C#
62 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using NLog;
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namespace NzbDrone.Common.Messaging
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{
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public class MessageAggregator : IMessageAggregator
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{
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private readonly Logger _logger;
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private readonly Func<IEnumerable<IProcessMessage>> _handlers;
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public MessageAggregator(Logger logger, Func<IEnumerable<IProcessMessage>> handlers)
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{
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_logger = logger;
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_handlers = handlers;
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}
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public void PublishEvent<TEvent>(TEvent @event) where TEvent : IEvent
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{
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_logger.Trace("Publishing {0}", @event.GetType().Name);
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//call synchronous handlers first.
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foreach (var handler in _handlers().OfType<IHandle<TEvent>>())
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{
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try
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{
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_logger.Debug("{0} -> {1}", @event.GetType().Name, handler.GetType().Name);
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handler.Handle(@event);
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_logger.Debug("{0} <- {1}", @event.GetType().Name, handler.GetType().Name);
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}
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catch (Exception e)
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{
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_logger.ErrorException(string.Format("{0} failed while processing [{1}]", handler.GetType().Name, @event.GetType().Name), e);
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}
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}
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foreach (var handler in _handlers().OfType<IHandleAsync<TEvent>>())
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{
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var handlerLocal = handler;
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Task.Factory.StartNew(() =>
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{
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_logger.Debug("{0} ~> {1}", @event.GetType().Name, handlerLocal.GetType().Name);
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handlerLocal.HandleAsync(@event);
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_logger.Debug("{0} <~ {1}", @event.GetType().Name, handlerLocal.GetType().Name);
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});
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}
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}
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public void PublishCommand<TCommand>(TCommand command) where TCommand : ICommand
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{
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_logger.Trace("Publishing {0}", command.GetType().Name);
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var handler = _handlers().OfType<IExecute<TCommand>>().Single();
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_logger.Debug("{0} -> {1}", command.GetType().Name, handler.GetType().Name);
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handler.Execute(command);
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_logger.Debug("{0} <- {1}", command.GetType().Name, handler.GetType().Name);
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}
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}
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}
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