public virtual Task OnSubscriberExceptionAsync(IRawConsumer consumer, SubscriptionConfiguration config, BasicDeliverEventArgs args, Exception exception)
{
if (!config.NoAck)
{
consumer.Model.BasicAck(args.DeliveryTag, false);
consumer.AcknowledgedTags.Add(args.DeliveryTag);
}
try
{
_logger.LogDebug($"Attempting to publish message '{args.BasicProperties.MessageId}' to error exchange.");
var topologyTask = _topologyProvider.DeclareExchangeAsync(_errorExchangeCfg);
var channelTask = _channelFactory.GetChannelAsync();
return Task
.WhenAll(topologyTask, channelTask)
.ContinueWith(t =>
{
var msg = _serializer.Deserialize(args);
var errorMsg = new HandlerExceptionMessage
{
Exception = exception,
Time = DateTime.Now,
Host = Environment.MachineName,
Message = msg,
};
consumer.Model.BasicPublish(
exchange: _errorExchangeCfg.ExchangeName,
routingKey: args.RoutingKey,
basicProperties: args.BasicProperties,
body: _serializer.Serialize(errorMsg)
);
});
}
catch (Exception e)
{
_logger.LogWarning($"Unable to publish message '{args.BasicProperties.MessageId}' to default error exchange.", e);
return Task.FromResult(true);
}
}
public virtual async Task OnSubscriberExceptionAsync(IRawConsumer consumer, SubscriptionConfiguration config, BasicDeliverEventArgs args, Exception exception)
{
if (!config.NoAck)
{
consumer.Model.BasicAck(args.DeliveryTag, false);
consumer.AcknowledgedTags.Add(args.DeliveryTag);
}
try
{
_logger.LogError($"Error thrown in Subscriber: ", exception);
_logger.LogDebug($"Attempting to publish message '{args.BasicProperties.MessageId}' to error exchange.");
await _topologyProvider.DeclareExchangeAsync(_errorExchangeCfg);
var channel = await _channelFactory.GetChannelAsync();
var msg = _serializer.Deserialize(args);
var actualException = UnwrapInnerException(exception);
var errorMsg = new HandlerExceptionMessage
{
Exception = new ExceptionInformation
{
ExceptionType = actualException.GetType().FullName,
InnerMessage = actualException.InnerException?.Message,
Message = actualException.Message,
StackTrace = actualException.StackTrace
},
Time = DateTime.Now,
Host = Environment.MachineName,
Message = msg,
};
channel.BasicPublish(
exchange: _errorExchangeCfg.ExchangeName,
routingKey: args.RoutingKey,
basicProperties: args.BasicProperties,
body: _serializer.Serialize(errorMsg)
);
channel.Close();
}
catch (Exception e)
{
_logger.LogWarning($"Unable to publish message '{args.BasicProperties.MessageId}' to default error exchange.", e);
}
}