public ConnectionHandler(ClientConfigurationData conf, HandlerState state, Backoff backoff, IActorRef connection)
{
_state = state;
_connection = connection;
_backoff = backoff;
_log = Context.System.Log;
_actorContext = Context;
_conf = conf;
Listening();
}
/// <summary>
/// calls broker binaryProto-lookup api to get metadata of partitioned-topic.
///
/// </summary>
private async ValueTask GetPartitionedTopicMetadata(TopicName topicName, TimeSpan opTimeout)
{
var request = Commands.NewPartitionMetadataRequest(topicName.ToString(), _requestId);
var payload = new Payload(request, _requestId, "NewPartitionMetadataRequest");
var askResponse = await _clientCnx.Ask <AskResponse>(payload);
if (askResponse.Failed)
{
var e = askResponse.Exception;
var nextDelay = Math.Min(_getPartitionedTopicMetadataBackOff.Next(), opTimeout.TotalMilliseconds);
var reply = _replyTo;
var isLookupThrottling = !PulsarClientException.IsRetriableError(e) || e is PulsarClientException.TooManyRequestsException || e is PulsarClientException.AuthenticationException;
if (nextDelay <= 0 || isLookupThrottling)
{
reply.Tell(new AskResponse(new PulsarClientException.InvalidConfigurationException(e)));
_log.Error(e.ToString());
_getPartitionedTopicMetadataBackOff = null;
}
else
{
_log.Warning($"[topic: {topicName}] Could not get connection while getPartitionedTopicMetadata -- Will try again in {nextDelay} ms: {e.Message}");
opTimeout.Subtract(TimeSpan.FromMilliseconds(nextDelay));
var id = await _generator.Ask <NewRequestIdResponse>(NewRequestId.Instance);
_requestId = id.Id;
await GetPartitionedTopicMetadata(topicName, opTimeout);
}
}
var data = askResponse.ConvertTo <LookupDataResult>();
if (data?.Error != ServerError.UnknownError)
{
_log.Warning($"[{topicName}] failed to get Partitioned metadata : {data.Error}:{data.ErrorMessage}");
_replyTo.Tell(new AskResponse(new PartitionedTopicMetadata(0)));
}
else
{
_replyTo.Tell(new AskResponse(new PartitionedTopicMetadata(data.Partitions)));
}
_getPartitionedTopicMetadataBackOff = null;
}
public static Props Prop(ClientConfigurationData conf, HandlerState state, Backoff backoff, IActorRef connection)
{
return(Props.Create(() => new ConnectionHandler(conf, state, backoff, connection)));
}
private void Awaiting()
{
Receive <SetClient>(c =>
{
//_pulsarClient = c.Client;
});
Receive <UpdateServiceUrl>(u =>
{
UpdateServiceUrl(u.ServiceUrl);
});
ReceiveAsync <GetBroker>(async b =>
{
try
{
_replyTo = Sender;
await GetCnxAndRequestId();
await GetBroker(b);
}
catch (Exception e)
{
_replyTo.Tell(new AskResponse(PulsarClientException.Unwrap(e)));
}
});
ReceiveAsync <GetPartitionedTopicMetadata>(async p =>
{
try
{
var opTimeout = _operationTimeout;
_replyTo = Sender;
_getPartitionedTopicMetadataBackOff = (new BackoffBuilder()).SetInitialTime(TimeSpan.FromMilliseconds(100)).SetMandatoryStop(opTimeout.Multiply(2)).SetMax(TimeSpan.FromMinutes(1)).Create();
await GetCnxAndRequestId();
await GetPartitionedTopicMetadata(p.TopicName, opTimeout);
}
catch (Exception e)
{
_replyTo.Tell(new AskResponse(PulsarClientException.Unwrap(e)));
}
});
ReceiveAsync <GetSchema>(async s =>
{
try
{
_replyTo = Sender;
await GetCnxAndRequestId();
await GetSchema(s.TopicName, s.Version);
}
catch (Exception e)
{
_replyTo.Tell(new AskResponse(PulsarClientException.Unwrap(e)));
}
});
ReceiveAsync <GetTopicsUnderNamespace>(async t =>
{
try
{
var opTimeout = _operationTimeout;
_getTopicsUnderNamespaceBackOff = new BackoffBuilder().SetInitialTime(TimeSpan.FromMilliseconds(100)).SetMandatoryStop(opTimeout.Multiply(2)).SetMax(TimeSpan.FromMinutes(1)).Create();
_replyTo = Sender;
await GetCnxAndRequestId();
await GetTopicsUnderNamespace(t.Namespace, t.Mode, opTimeout);
}
catch (Exception e)
{
_replyTo.Tell(new AskResponse(PulsarClientException.Unwrap(e)));
}
});
}