/// <summary>
/// Creates a new instance. This class is also used to shareable a context across all instance that are created below one Cluster instance.
/// One configuration instance per Cluster instance.
/// </summary>
internal Configuration(Policies policies,
ProtocolOptions protocolOptions,
PoolingOptions poolingOptions,
SocketOptions socketOptions,
ClientOptions clientOptions,
IAuthProvider authProvider,
IAuthInfoProvider authInfoProvider,
QueryOptions queryOptions,
IAddressTranslator addressTranslator)
{
if (addressTranslator == null)
{
throw new ArgumentNullException("addressTranslator");
}
if (queryOptions == null)
{
throw new ArgumentNullException("queryOptions");
}
_policies = policies;
_protocolOptions = protocolOptions;
_poolingOptions = poolingOptions;
_socketOptions = socketOptions;
_clientOptions = clientOptions;
_authProvider = authProvider;
_authInfoProvider = authInfoProvider;
_queryOptions = queryOptions;
_addressTranslator = addressTranslator;
}
private Cluster Connect()
{
try
{
QueryOptions queryOptions = new QueryOptions()
.SetConsistencyLevel(ConsistencyLevel.One);
var builder = Cassandra.Cluster.Builder();
builder.AddContactPoints(CassandraConfig.ContactPoints);
if (!string.IsNullOrEmpty(CassandraConfig.Credentials.UserName) &&
!string.IsNullOrEmpty(CassandraConfig.Credentials.Password))
{
builder.WithCredentials(
CassandraConfig.Credentials.UserName,
CassandraConfig.Credentials.Password);
}
builder.WithQueryOptions(queryOptions);
Cluster cluster = builder.Build();
return cluster;
}
catch (Exception e)
{
return null;
}
}
internal static QueryProtocolOptions CreateFromQuery(Statement query, QueryOptions queryOptions)
{
if (query == null)
{
return Default;
}
var consistency = query.ConsistencyLevel ?? queryOptions.GetConsistencyLevel();
var pageSize = query.PageSize != 0 ? query.PageSize : queryOptions.GetPageSize();
var options = new QueryProtocolOptions(
consistency,
query.QueryValues,
query.SkipMetadata,
pageSize,
query.PagingState,
query.SerialConsistencyLevel)
{
Timestamp = query.Timestamp
};
return options;
}
/// <summary>
/// Sets the QueryOptions to use for the newly created Cluster.
///
/// If no query options are set through this method, default query
/// options will be used.
/// </summary>
/// <param name="options">the QueryOptions to use.</param>
/// <returns>this Builder.</returns>
public Builder WithQueryOptions(QueryOptions options)
{
_queryOptions = options;
return this;
}
/// <summary>
/// Sets the default consistency level.
/// </summary>
internal void SetDefaultConsistencyLevel(ConsistencyLevel consistencyLevel)
{
QueryOptions.SetDefaultConsistencyLevel(consistencyLevel);
}
/// <summary>
/// Creates a new instance. This class is also used to shareable a context across all instance that are created below one Cluster instance.
/// One configuration instance per Cluster instance.
/// </summary>
internal Configuration(Policies policies,
ProtocolOptions protocolOptions,
PoolingOptions poolingOptions,
SocketOptions socketOptions,
ClientOptions clientOptions,
IAuthProvider authProvider,
IAuthInfoProvider authInfoProvider,
QueryOptions queryOptions,
IAddressTranslator addressTranslator,
IReadOnlyDictionary <string, IExecutionProfile> executionProfiles,
MetadataSyncOptions metadataSyncOptions,
IEndPointResolver endPointResolver,
IDriverMetricsProvider driverMetricsProvider,
DriverMetricsOptions metricsOptions,
string sessionName,
GraphOptions graphOptions,
Guid?clusterId,
string appVersion,
string appName,
MonitorReportingOptions monitorReportingOptions,
TypeSerializerDefinitions typeSerializerDefinitions,
bool?keepContactPointsUnresolved,
bool?allowBetaProtocolVersions,
ISessionFactory sessionFactory = null,
IRequestOptionsMapper requestOptionsMapper = null,
IStartupOptionsFactory startupOptionsFactory = null,
IInsightsSupportVerifier insightsSupportVerifier = null,
IRequestHandlerFactory requestHandlerFactory = null,
IHostConnectionPoolFactory hostConnectionPoolFactory = null,
IRequestExecutionFactory requestExecutionFactory = null,
IConnectionFactory connectionFactory = null,
IControlConnectionFactory controlConnectionFactory = null,
IPrepareHandlerFactory prepareHandlerFactory = null,
ITimerFactory timerFactory = null,
IObserverFactoryBuilder observerFactoryBuilder = null,
IInsightsClientFactory insightsClientFactory = null,
IContactPointParser contactPointParser = null,
IServerNameResolver serverNameResolver = null,
IDnsResolver dnsResolver = null,
IMetadataRequestHandler metadataRequestHandler = null,
ITopologyRefresherFactory topologyRefresherFactory = null,
ISchemaParserFactory schemaParserFactory = null,
ISupportedOptionsInitializerFactory supportedOptionsInitializerFactory = null,
IProtocolVersionNegotiator protocolVersionNegotiator = null,
IServerEventsSubscriber serverEventsSubscriber = null)
{
AddressTranslator = addressTranslator ?? throw new ArgumentNullException(nameof(addressTranslator));
QueryOptions = queryOptions ?? throw new ArgumentNullException(nameof(queryOptions));
GraphOptions = graphOptions ?? new GraphOptions();
ClusterId = clusterId ?? Guid.NewGuid();
ApplicationVersion = appVersion ?? Configuration.DefaultApplicationVersion;
ApplicationName = appName ?? Configuration.FallbackApplicationName;
ApplicationNameWasGenerated = appName == null;
Policies = policies;
ProtocolOptions = protocolOptions;
PoolingOptions = poolingOptions;
SocketOptions = socketOptions;
ClientOptions = clientOptions;
AuthProvider = authProvider;
AuthInfoProvider = authInfoProvider;
StartupOptionsFactory = startupOptionsFactory ?? new StartupOptionsFactory(ClusterId, ApplicationVersion, ApplicationName);
SessionFactory = sessionFactory ?? new SessionFactory();
RequestOptionsMapper = requestOptionsMapper ?? new RequestOptionsMapper();
MetadataSyncOptions = metadataSyncOptions?.Clone() ?? new MetadataSyncOptions();
DnsResolver = dnsResolver ?? new DnsResolver();
MetadataRequestHandler = metadataRequestHandler ?? new MetadataRequestHandler();
TopologyRefresherFactory = topologyRefresherFactory ?? new TopologyRefresherFactory();
SchemaParserFactory = schemaParserFactory ?? new SchemaParserFactory();
SupportedOptionsInitializerFactory = supportedOptionsInitializerFactory ?? new SupportedOptionsInitializerFactory();
ProtocolVersionNegotiator = protocolVersionNegotiator ?? new ProtocolVersionNegotiator();
ServerEventsSubscriber = serverEventsSubscriber ?? new ServerEventsSubscriber();
MetricsOptions = metricsOptions ?? new DriverMetricsOptions();
MetricsProvider = driverMetricsProvider ?? new NullDriverMetricsProvider();
SessionName = sessionName;
MetricsEnabled = driverMetricsProvider != null;
TypeSerializers = typeSerializerDefinitions?.Definitions;
KeepContactPointsUnresolved = keepContactPointsUnresolved ?? false;
AllowBetaProtocolVersions = allowBetaProtocolVersions ?? false;
ObserverFactoryBuilder = observerFactoryBuilder ?? (MetricsEnabled ? (IObserverFactoryBuilder) new MetricsObserverFactoryBuilder() : new NullObserverFactoryBuilder());
RequestHandlerFactory = requestHandlerFactory ?? new RequestHandlerFactory();
HostConnectionPoolFactory = hostConnectionPoolFactory ?? new HostConnectionPoolFactory();
RequestExecutionFactory = requestExecutionFactory ?? new RequestExecutionFactory();
ConnectionFactory = connectionFactory ?? new ConnectionFactory();
ControlConnectionFactory = controlConnectionFactory ?? new ControlConnectionFactory();
PrepareHandlerFactory = prepareHandlerFactory ?? new PrepareHandlerFactory();
TimerFactory = timerFactory ?? new TaskBasedTimerFactory();
RequestOptions = RequestOptionsMapper.BuildRequestOptionsDictionary(executionProfiles, policies, socketOptions, clientOptions, queryOptions, GraphOptions);
ExecutionProfiles = BuildExecutionProfilesDictionary(executionProfiles, RequestOptions);
MonitorReportingOptions = monitorReportingOptions ?? new MonitorReportingOptions();
InsightsSupportVerifier = insightsSupportVerifier ?? Configuration.DefaultInsightsSupportVerifier;
InsightsClientFactory = insightsClientFactory ?? Configuration.DefaultInsightsClientFactory;
ServerNameResolver = serverNameResolver ?? new ServerNameResolver(ProtocolOptions);
EndPointResolver = endPointResolver ?? new EndPointResolver(ServerNameResolver);
ContactPointParser = contactPointParser ?? new ContactPointParser(DnsResolver, ProtocolOptions, ServerNameResolver, KeepContactPointsUnresolved);
// Create the buffer pool with 16KB for small buffers and 256Kb for large buffers.
// The pool does not eagerly reserve the buffers, so it doesn't take unnecessary memory
// to create the instance.
BufferPool = new RecyclableMemoryStreamManager(16 * 1024, 256 * 1024, ProtocolOptions.MaximumFrameLength);
Timer = new HashedWheelTimer();
}
