public kafkaConfWrapper()
{
kafkaProducer = new kafkaProducerConf();
kafkaRPC = new kafkaRPCConf();
opcSystemName = "OPC";
KafkaSchemaRegistryURL = "localhost:8081";
KafkaServers = "localhost:9092";
}
public opcKafkaRPC(kafkaRPCConf conf, CachedSchemaRegistryClient schemaRegistry)
{
_conf = conf;
logger = LogManager.GetLogger(this.GetType().Name);
_schemas = new opcSchemas();
// Override default GroupID if name exist
if (conf.GroupId == "OPC")
{
conf.GroupId = conf.opcSystemName;
}
// build the consumer, and subscribe it to topic
_consumer = new ConsumerBuilder <String, GenericRecord>(conf.getConsumerConf())
.SetValueDeserializer(new AvroDeserializer <GenericRecord>(schemaRegistry).AsSyncOverAsync())
.SetErrorHandler((_, e) => logger.Error($"Error: {e.Reason}"))
.Build();
_consumer.Subscribe(conf.opcSystemName + "-request");
// build the producer for the responses
var producer_conf = new ProducerConfig()
{
BootstrapServers = conf.BootstrapServers,
LingerMs = 5 // low latency response
};
_producer = new ProducerBuilder <String, GenericRecord>(producer_conf)
.SetValueSerializer(new AvroSerializer <GenericRecord>(schemaRegistry))
.SetErrorHandler((_, e) => logger.Error($"Error: {e.Reason}"))
.Build();
if (_conf.enableKafkaRPC)
{
logger.Info("Connected to broker: " + _conf.BootstrapServers);
logger.Info("Request are to be made on topic: " + conf.opcSystemName + "-request");
logger.Info("Response will be on topic: " + _conf.opcSystemName + "-response");
}
}