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DelayedRetry.cs
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DelayedRetry.cs
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namespace NServiceBus;
using System;
using System.Collections.Generic;
using DelayedDelivery;
using Logging;
using Pipeline;
using Recoverability;
using Routing;
using Transport;
/// <summary>
/// Indicates recoverability is required to delay retry the current message.
/// </summary>
public class DelayedRetry : RecoverabilityAction
{
/// <summary>
/// Creates the action with the requested delay.
/// </summary>
protected internal DelayedRetry(TimeSpan delay) => Delay = delay;
/// <summary>
/// The retry delay.
/// </summary>
public TimeSpan Delay { get; }
/// <summary>
/// The ErrorHandleResult that should be passed to the transport.
/// </summary>
public override ErrorHandleResult ErrorHandleResult => ErrorHandleResult.Handled;
/// <inheritdoc />
public override IReadOnlyCollection<IRoutingContext> GetRoutingContexts(IRecoverabilityActionContext context)
{
var message = context.FailedMessage;
var exception = context.Exception;
Logger.Warn($"Delayed Retry will reschedule message '{message.MessageId}' after a delay of {Delay} because of an exception:", exception);
var outgoingMessage = new OutgoingMessage(message.MessageId, new Dictionary<string, string>(message.Headers), message.Body);
var currentDelayedRetriesAttempt = context.DelayedDeliveriesPerformed + 1;
if (context is IRecoverabilityActionContextNotifications notifications)
{
notifications.Add(new MessageToBeRetried(
attempt: currentDelayedRetriesAttempt,
delay: Delay,
immediateRetry: false,
message,
exception));
}
outgoingMessage.SetCurrentDelayedDeliveries(currentDelayedRetriesAttempt);
outgoingMessage.SetDelayedDeliveryTimestamp(DateTimeOffset.UtcNow);
var routingContext = context.CreateRoutingContext(outgoingMessage, new UnicastRoutingStrategy(context.ReceiveAddress));
routingContext.Extensions.Set(new DispatchProperties
{
DelayDeliveryWith = new DelayDeliveryWith(Delay)
});
return new[] { routingContext };
}
static readonly ILog Logger = LogManager.GetLogger<DelayedRetry>();
}