NServiceBus.RecoverabilityExecutor.Invoke C# (CSharp) Method

        public Task<ErrorHandleResult> Invoke(ErrorContext errorContext)
        {
            var recoveryAction = recoverabilityPolicy(configuration, errorContext);

            // When we can't do immediate retries and policy did not honor MaxNumberOfRetries for ImmediateRetries
            if (recoveryAction is ImmediateRetry && !immediateRetriesAvailable)
            {
                Logger.Warn("Recoverability policy requested ImmediateRetry however immediate retries are not available with the current endpoint configuration. Moving message to error queue instead.");
                return MoveToError(errorContext, configuration.Failed.ErrorQueue);
            }

            if (recoveryAction is ImmediateRetry)
            {
                return RaiseImmediateRetryNotifications(errorContext);
            }

            // When we can't do delayed retries, a policy customization probably didn't honor MaxNumberOfRetries for DelayedRetries
            if (recoveryAction is DelayedRetry && !delayedRetriesAvailable)
            {
                Logger.Warn("Recoverability policy requested DelayedRetry however delayed delivery capability is not available with the current endpoint configuration. Moving message to error queue instead.");
                return MoveToError(errorContext, configuration.Failed.ErrorQueue);
            }

            var delayedRetryAction = recoveryAction as DelayedRetry;
            if (delayedRetryAction != null)
            {
                return DeferMessage(delayedRetryAction, errorContext);
            }

            var moveToError = recoveryAction as MoveToError;
            if (moveToError != null)
            {
                return MoveToError(errorContext, moveToError.ErrorQueue);
            }

            Logger.Warn("Recoverability policy returned an unsupported recoverability action. Moving message to error queue instead.");
            return MoveToError(errorContext, configuration.Failed.ErrorQueue);
        }