/// <summary>
/// Initializes the connection.
/// </summary>
/// <exception cref="SocketException">Throws a SocketException when the connection could not be established with the host</exception>
/// <exception cref="AuthenticationException" />
/// <exception cref="UnsupportedProtocolVersionException"></exception>
public async Task <Response> Open()
{
_freeOperations = new ConcurrentStack <short>(Enumerable.Range(0, MaxConcurrentRequests).Select(s => (short)s).Reverse());
_pendingOperations = new ConcurrentDictionary <short, OperationState>();
_writeQueue = new ConcurrentQueue <OperationState>();
if (Options.CustomCompressor != null)
{
Compressor = Options.CustomCompressor;
}
else if (Options.Compression == CompressionType.LZ4)
{
#if !NETCORE
Compressor = new LZ4Compressor();
#else
throw new NotSupportedException("Lz4 compression not supported under .NETCore");
#endif
}
else if (Options.Compression == CompressionType.Snappy)
{
Compressor = new SnappyCompressor();
}
//Init TcpSocket
_tcpSocket.Init();
_tcpSocket.Error += CancelPending;
_tcpSocket.Closing += () => CancelPending(null);
//Read and write event handlers are going to be invoked using IO Threads
_tcpSocket.Read += ReadHandler;
_tcpSocket.WriteCompleted += WriteCompletedHandler;
var protocolVersion = _serializer.ProtocolVersion;
await _tcpSocket.Connect().ConfigureAwait(false);
Response response;
try
{
response = await Startup().ConfigureAwait(false);
}
catch (ProtocolErrorException ex)
{
// As we are starting up, check for protocol version errors.
// There is no other way than checking the error message from Cassandra
if (ex.Message.Contains("Invalid or unsupported protocol version"))
{
throw new UnsupportedProtocolVersionException(protocolVersion, ex);
}
throw;
}
if (response is AuthenticateResponse)
{
return(await StartAuthenticationFlow(((AuthenticateResponse)response).Authenticator)
.ConfigureAwait(false));
}
if (response is ReadyResponse)
{
return(response);
}
throw new DriverInternalError("Expected READY or AUTHENTICATE, obtained " + response.GetType().Name);
}
/// <summary>
/// Initializes the connection. Thread safe.
/// </summary>
/// <exception cref="SocketException">Throws a SocketException when the connection could not be established with the host</exception>
/// <exception cref="AuthenticationException" />
/// <exception cref="UnsupportedProtocolVersionException"></exception>
public virtual void Init()
{
_freeOperations = new ConcurrentStack <short>(Enumerable.Range(0, MaxConcurrentRequests).Select(s => (short)s).Reverse());
_pendingOperations = new ConcurrentDictionary <short, OperationState>();
_writeQueue = new ConcurrentQueue <OperationState>();
if (Options.CustomCompressor != null)
{
Compressor = Options.CustomCompressor;
}
else if (Options.Compression == CompressionType.LZ4)
{
Compressor = new LZ4Compressor();
}
else if (Options.Compression == CompressionType.Snappy)
{
Compressor = new SnappyCompressor();
}
//Init TcpSocket
_tcpSocket.Init();
_tcpSocket.Error += CancelPending;
_tcpSocket.Closing += () => CancelPending(null, null);
//Read and write event handlers are going to be invoked using IO Threads
_tcpSocket.Read += ReadHandler;
_tcpSocket.WriteCompleted += WriteCompletedHandler;
_tcpSocket.Connect();
var startupTask = Startup();
try
{
TaskHelper.WaitToComplete(startupTask, _tcpSocket.Options.ConnectTimeoutMillis);
}
catch (ProtocolErrorException ex)
{
//As we are starting up, check for protocol version errors
//There is no other way than checking the error message from Cassandra
if (ex.Message.Contains("Invalid or unsupported protocol version"))
{
throw new UnsupportedProtocolVersionException(ProtocolVersion, ex);
}
throw;
}
if (startupTask.Result is AuthenticateResponse)
{
Authenticate();
}
else if (!(startupTask.Result is ReadyResponse))
{
throw new DriverInternalError("Expected READY or AUTHENTICATE, obtained " + startupTask.Result.GetType().Name);
}
}
/// <summary>
/// Initializes the connection.
/// </summary>
/// <exception cref="SocketException">Throws a SocketException when the connection could not be established with the host</exception>
/// <exception cref="AuthenticationException" />
/// <exception cref="UnsupportedProtocolVersionException"></exception>
public Task <Response> Open()
{
_freeOperations = new ConcurrentStack <short>(Enumerable.Range(0, MaxConcurrentRequests).Select(s => (short)s).Reverse());
_pendingOperations = new ConcurrentDictionary <short, OperationState>();
_writeQueue = new ConcurrentQueue <OperationState>();
if (Options.CustomCompressor != null)
{
Compressor = Options.CustomCompressor;
}
else if (Options.Compression == CompressionType.LZ4)
{
Compressor = new LZ4Compressor();
}
else if (Options.Compression == CompressionType.Snappy)
{
Compressor = new SnappyCompressor();
}
//Init TcpSocket
_tcpSocket.Init();
_tcpSocket.Error += CancelPending;
_tcpSocket.Closing += () => CancelPending(null, null);
//Read and write event handlers are going to be invoked using IO Threads
_tcpSocket.Read += ReadHandler;
_tcpSocket.WriteCompleted += WriteCompletedHandler;
return(_tcpSocket
.Connect()
.Then(_ => Startup())
.ContinueWith(t =>
{
if (t.IsFaulted && t.Exception != null)
{
//Adapt the inner exception and rethrow
var ex = t.Exception.InnerException;
var protocolVersion = _serializer.ProtocolVersion;
if (ex is ProtocolErrorException)
{
//As we are starting up, check for protocol version errors
//There is no other way than checking the error message from Cassandra
if (ex.Message.Contains("Invalid or unsupported protocol version"))
{
throw new UnsupportedProtocolVersionException(protocolVersion, ex);
}
}
if (ex is ServerErrorException && protocolVersion >= 3 && ex.Message.Contains("ProtocolException: Invalid or unsupported protocol version"))
{
//For some versions of Cassandra, the error is wrapped into a server error
//See CASSANDRA-9451
throw new UnsupportedProtocolVersionException(protocolVersion, ex);
}
throw ex;
}
return t.Result;
}, TaskContinuationOptions.ExecuteSynchronously)
.Then(response =>
{
if (response is AuthenticateResponse)
{
return StartAuthenticationFlow(((AuthenticateResponse)response).Authenticator);
}
if (response is ReadyResponse)
{
return TaskHelper.ToTask(response);
}
throw new DriverInternalError("Expected READY or AUTHENTICATE, obtained " + response.GetType().Name);
}));
}