public HostConnectionPool(Host host, Configuration config, ISerializer serializer, IObserverFactory observerFactory)
{
_host = host;
_host.Down += OnHostDown;
_host.Up += OnHostUp;
_host.DistanceChanged += OnDistanceChanged;
_config = config ?? throw new ArgumentNullException(nameof(config));
_poolingOptions = config.GetOrCreatePoolingOptions(serializer.ProtocolVersion);
_maxRequestsPerConnection = _poolingOptions.GetMaxRequestsPerConnection();
_serializer = serializer;
_observerFactory = observerFactory;
_timer = config.Timer;
_reconnectionSchedule = config.Policies.ReconnectionPolicy.NewSchedule();
_expectedConnectionLength = 1;
}
public CatchUpProjector(
TState state,
ICheckpointPersister checkpointPersister,
IPersistenceEngine engine,
IStorageResetter storageResetter,
IObserverFactory observerFactory
)
: base(state)
{
this.checkpointPersister = checkpointPersister ?? throw new ArgumentNullException(nameof(checkpointPersister));
this.storageResetter = storageResetter ?? throw new ArgumentNullException(nameof(storageResetter));
this.engine = engine ?? throw new ArgumentNullException(nameof(engine));
this.observerFactory = observerFactory ?? throw new ArgumentNullException(nameof(observerFactory));
projectorIdentifier = checkpointPersister.GetProjectorIdentifier(typeof(TState));
}
public KafkaConsumer(
IObserverFactory observerFactory,
IEventDeserializer deserializer,
ConsumerSettings settings,
ILoggerFactory loggerFactory)
{
if (deserializer == null)
{
throw new ArgumentNullException(nameof(deserializer));
}
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
_observerFactory = observerFactory ?? throw new ArgumentNullException(nameof(observerFactory));
_logger = loggerFactory.CreateLogger <KafkaConsumer>();
if (string.IsNullOrWhiteSpace(settings.Config.BootstrapServers))
{
throw new InvalidOperationException("Brokers not specified.");
}
if (string.IsNullOrEmpty(settings.Topic))
{
throw new InvalidOperationException("Topics not specified.");
}
if (string.IsNullOrEmpty(settings.Config.GroupId))
{
throw new InvalidOperationException("Group Id not specified.");
}
_consumer = new ConsumerBuilder <Guid, IStreamEvent>(settings.Config)
.SetKeyDeserializer(KeyDeserializer)
.SetValueDeserializer(new ValueObjectDeserializer(deserializer))
.SetErrorHandler((_, e) => _logger.LogError(
$"KafkaConsumer internal error: Topic: {settings.Topic}, {e.Reason}, Fatal={e.IsFatal}," +
$" IsLocal= {e.IsLocalError}, IsBroker={e.IsBrokerError}"))
.Build();
_consumer.Subscribe(settings.Topic);
}
public IHostConnectionPool Create(Host host, Configuration config, Serializer serializer, IObserverFactory observerFactory)
{
return(new HostConnectionPool(host, config, serializer, observerFactory));
}
