internal UdtMappingDefinitions(IInternalSession session, ISerializerManager serializer)
{
_udtByNetType = new ConcurrentDictionary <Type, UdtMap>();
_cluster = session.InternalCluster;
_session = session;
_serializer = serializer;
}
internal PreparedStatement(RowSetMetadata variablesRowsMetadata, byte[] id, ResultMetadata resultMetadata, string cql,
string keyspace, ISerializerManager serializer)
{
_variablesRowsMetadata = variablesRowsMetadata;
_resultMetadata = resultMetadata;
Id = id;
Cql = cql;
Keyspace = keyspace;
_serializerManager = serializer;
}
private static PreparedStatement GetPrepared(
byte[] queryId = null, ISerializerManager serializerManager = null, RowSetMetadata rowSetMetadata = null)
{
return(new PreparedStatement(
null,
queryId,
new ResultMetadata(new byte[16], rowSetMetadata),
"DUMMY QUERY",
null,
serializerManager ?? RequestHandlerTests.SerializerManager));
}
public async Task <IConnection> ChangeProtocolVersion(
Configuration config,
ISerializerManager serializer,
ProtocolVersion nextVersion,
IConnection previousConnection,
UnsupportedProtocolVersionException ex = null,
ProtocolVersion?previousVersion = null)
{
if (!nextVersion.IsSupported() || nextVersion == previousVersion)
{
nextVersion = nextVersion.GetLowerSupported();
}
if (nextVersion == 0)
{
if (ex != null)
{
// We have downgraded the version until is 0 and none of those are supported
throw ex;
}
// There was no exception leading to the downgrade, signal internal error
throw new DriverInternalError("Connection was unable to STARTUP using protocol version 0");
}
ControlConnection.Logger.Info(ex != null
? $"{ex.Message}, trying with version {nextVersion:D}"
: $"Changing protocol version to {nextVersion:D}");
serializer.ChangeProtocolVersion(nextVersion);
previousConnection.Dispose();
var c = config.ConnectionFactory.CreateUnobserved(
serializer.GetCurrentSerializer(),
previousConnection.EndPoint,
config);
try
{
await c.Open().ConfigureAwait(false);
return(c);
}
catch
{
c.Dispose();
throw;
}
}
public HostConnectionPool(Host host, Configuration config, ISerializerManager serializerManager, IObserverFactory observerFactory)
{
_host = host;
_host.Down += OnHostDown;
_host.Up += OnHostUp;
_host.DistanceChanged += OnDistanceChanged;
_config = config ?? throw new ArgumentNullException(nameof(config));
_poolingOptions = config.GetOrCreatePoolingOptions(serializerManager.CurrentProtocolVersion);
_maxRequestsPerConnection = _poolingOptions.GetMaxRequestsPerConnection();
_serializerManager = serializerManager;
_observerFactory = observerFactory;
_timer = config.Timer;
_reconnectionSchedule = config.Policies.ReconnectionPolicy.NewSchedule();
_expectedConnectionLength = 1;
}
public async Task <IConnection> NegotiateVersionAsync(
Configuration config,
Metadata metadata,
IConnection connection,
ISerializerManager serializer)
{
var commonVersion = serializer.CurrentProtocolVersion.GetHighestCommon(metadata.Hosts);
if (commonVersion != serializer.CurrentProtocolVersion)
{
// Current connection will be closed and reopened
connection = await ChangeProtocolVersion(
config, serializer, commonVersion, connection).ConfigureAwait(false);
}
return(connection);
}
/// <inheritdoc />
async Task <PreparedStatement> IInternalCluster.Prepare(
IInternalSession session, ISerializerManager serializerManager, PrepareRequest request)
{
var lbp = session.Cluster.Configuration.DefaultRequestOptions.LoadBalancingPolicy;
var handler = InternalRef.Configuration.PrepareHandlerFactory.CreatePrepareHandler(serializerManager, this);
var ps = await handler.Prepare(request, session, lbp.NewQueryPlan(session.Keyspace, null).GetEnumerator()).ConfigureAwait(false);
var psAdded = InternalRef.PreparedQueries.GetOrAdd(ps.Id, ps);
if (ps != psAdded)
{
PrepareHandler.Logger.Warning("Re-preparing already prepared query is generally an anti-pattern and will likely " +
"affect performance. Consider preparing the statement only once. Query='{0}'", ps.Cql);
ps = psAdded;
}
return(ps);
}
private static Mock <ISession> GetSessionMock(ISerializerManager serializer = null)
{
if (serializer == null)
{
serializer = new SerializerManager(ProtocolVersion.MaxSupported);
}
var sessionMock = new Mock <ISession>(MockBehavior.Strict);
var config = new Configuration();
var metadata = new Metadata(config);
var ccMock = new Mock <IControlConnection>(MockBehavior.Strict);
ccMock.Setup(cc => cc.Serializer).Returns(serializer);
metadata.ControlConnection = ccMock.Object;
var clusterMock = new Mock <ICluster>();
clusterMock.Setup(c => c.Metadata).Returns(metadata);
clusterMock.Setup(c => c.Configuration).Returns(config);
sessionMock.Setup(s => s.Cluster).Returns(clusterMock.Object);
return(sessionMock);
}
public IPrepareHandler CreatePrepareHandler(
ISerializerManager serializerManager, IInternalCluster cluster)
{
return(new PrepareHandler(serializerManager, cluster, CreateReprepareHandler()));
}
private static Mock <Connection> GetConnectionMock(Configuration config = null, ISerializerManager serializer = null)
{
config = config ?? new Configuration();
return(new Mock <Connection>(
MockBehavior.Loose,
serializer?.GetCurrentSerializer() ?? new SerializerManager(ProtocolVersion.MaxSupported).GetCurrentSerializer(),
new ConnectionEndPoint(ConnectionTests.Address, null),
config,
new StartupRequestFactory(config.StartupOptionsFactory),
NullConnectionObserver.Instance));
}
public Task <IInternalSession> CreateSessionAsync(
IInternalCluster cluster, string keyspace, ISerializerManager serializer, string sessionName)
{
return(Task.FromResult(
new Session(cluster, cluster.Configuration, keyspace, serializer, sessionName).InternalRef));
}
public PrepareHandler(ISerializerManager serializerManager, IInternalCluster cluster, IReprepareHandler reprepareHandler)
{
_serializerManager = serializerManager;
_cluster = cluster;
_reprepareHandler = reprepareHandler;
}
public Task <IConnection> NegotiateVersionAsync(Configuration config, Metadata metadata, IConnection connection, ISerializerManager serializer)
{
return(Task.FromResult(connection));
}
public Task <IConnection> ChangeProtocolVersion(Configuration config, ISerializerManager serializer, ProtocolVersion nextVersion, IConnection previousConnection,
UnsupportedProtocolVersionException ex = null, ProtocolVersion?previousVersion = null)
{
return(Task.FromResult(previousConnection));
}
public IHostConnectionPool Create(Host host, Configuration config, ISerializerManager serializerManager, IObserverFactory observerFactory)
{
return(new HostConnectionPool(host, config, serializerManager, observerFactory));
}