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Expose ReadOnly Intent in TDSSQLTestClient #80

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7d884df
Expose ReadOnly Intent in TDSSQLTestClient
JPaja Jun 20, 2023
c1a3670
Add: Base query support
JPaja Sep 19, 2023
e567399
Add types base
JPaja Sep 14, 2023
aefae97
Add basic query support
JPaja Sep 19, 2023
9e47dea
Fix: Unicode stream read + Print of query data
JPaja Sep 19, 2023
703647b
Fix query return type
JPaja Sep 19, 2023
d6f4edd
Merge branch 'feature/query'
JPaja Sep 19, 2023
3095658
Add: Return type on query
JPaja Sep 19, 2023
8187114
Merge branch 'feature/query'
JPaja Sep 19, 2023
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176 changes: 134 additions & 42 deletions TDSClient/TDSClient/TDS/Client/TDSSQLTestClient.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,16 +7,22 @@
namespace TDSClient.TDS.Client
{
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Security.Authentication;
using System.Threading;
using TDSClient.TDS.Comms;
using TDSClient.TDS.Header;
using TDSClient.TDS.Login7;
using TDSClient.TDS.PreLogin;
using TDSClient.TDS.Query;
using TDSClient.TDS.Tokens;
using TDSClient.TDS.Tokens.Cols;
using TDSClient.TDS.Tranasction.Header.Headers;
using TDSClient.TDS.Tranasction.Headers;
using TDSClient.TDS.Utilities;

/// <summary>
Expand All @@ -40,7 +46,7 @@ public class TDSSQLTestClient
/// <param name="password">User password</param>
/// <param name="database">Database to connect to</param>
/// <param name="encryptionProtocol">Encryption Protocol</param>
public TDSSQLTestClient(string server, int port, string userID, string password, string database, SslProtocols encryptionProtocol = SslProtocols.Tls12)
public TDSSQLTestClient(string server, int port, string userID, string password, string database, SslProtocols encryptionProtocol = SslProtocols.Tls12, TDSLogin7TypeFlagsReadOnlyIntent readOnlyIntent = TDSLogin7TypeFlagsReadOnlyIntent.Off)
{
if (string.IsNullOrEmpty(server) || string.IsNullOrEmpty(userID) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(database))
{
Expand All @@ -55,6 +61,7 @@ public TDSSQLTestClient(string server, int port, string userID, string password,
this.Password = password;
this.Database = database;
this.EncryptionProtocol = encryptionProtocol;
this.ReadOnlyIntent = readOnlyIntent;
this.connectionAttempt = 0;

LoggingUtilities.WriteLog($" Instantiating TDSSQLTestClient with the following parameters:");
Expand Down Expand Up @@ -110,6 +117,11 @@ public TDSSQLTestClient(string server, int port, string userID, string password,
/// </summary>
public SslProtocols EncryptionProtocol { get; set; }

/// <summary>
/// Gets or sets the ReadOnly Intent Policy.
/// </summary>
public TDSLogin7TypeFlagsReadOnlyIntent ReadOnlyIntent {get; set;}

/// <summary>
/// Sends PreLogin message to the server.
/// </summary>
Expand Down Expand Up @@ -163,7 +175,7 @@ public void SendLogin7()

tdsMessageBody.TypeFlags.OLEDB = TDSLogin7TypeFlagsOLEDB.On;
tdsMessageBody.TypeFlags.SQLType = TDSLogin7TypeFlagsSQLType.DFLT;
tdsMessageBody.TypeFlags.ReadOnlyIntent = TDSLogin7TypeFlagsReadOnlyIntent.On;
tdsMessageBody.TypeFlags.ReadOnlyIntent = this.ReadOnlyIntent;

this.TdsCommunicator.SendTDSMessage(tdsMessageBody);

Expand Down Expand Up @@ -212,46 +224,7 @@ public void ReceiveLogin7Response()
{
foreach (var token in response.Tokens)
{
if (token is TDSEnvChangeToken)
{
var envChangeToken = token as TDSEnvChangeToken;
if (envChangeToken.Type == Tokens.EnvChange.TDSEnvChangeType.Routing)
{
LoggingUtilities.WriteLog($" Client received EnvChange routing token, client is being routed.");
this.Server = envChangeToken.Values["AlternateServer"];
this.Port = int.Parse(envChangeToken.Values["ProtocolProperty"]);
this.reconnect = true;
LoggingUtilities.WriteLog($" Redirect to {this.Server}:{this.Port}", writeToSummaryLog: true, writeToVerboseLog: false);
}
}
else if (token is TDSErrorToken)
{
var errorToken = token as TDSErrorToken;
LoggingUtilities.WriteLog($" Client received Error token, Number: {errorToken.Number}, State: {errorToken.State}", writeToSummaryLog: true); ;
LoggingUtilities.WriteLog($" MsgText: {errorToken.MsgText}");
LoggingUtilities.WriteLog($" Class: {errorToken.Class}");
LoggingUtilities.WriteLog($" ServerName: {errorToken.ServerName}");
LoggingUtilities.WriteLog($" ProcName: {errorToken.ProcName}");
LoggingUtilities.WriteLog($" LineNumber: {errorToken.LineNumber}");

if (errorToken.Number == 18456)
{
throw new Exception("Login failure.");
}
}
else if (token is TDSInfoToken)
{
var infoToken = token as TDSInfoToken;
LoggingUtilities.WriteLog($" Client received Info token:");

LoggingUtilities.WriteLog($" Number: {infoToken.Number}");
LoggingUtilities.WriteLog($" State: {infoToken.State}");
LoggingUtilities.WriteLog($" Class: {infoToken.Class}");
LoggingUtilities.WriteLog($" MsgText: {infoToken.MsgText}");
LoggingUtilities.WriteLog($" ServerName: {infoToken.ServerName}");
LoggingUtilities.WriteLog($" ProcName: {infoToken.ProcName}");
LoggingUtilities.WriteLog($" LineNumber: {infoToken.LineNumber}");
}
PrintTdsToken(token);
}
}
else
Expand All @@ -262,6 +235,72 @@ public void ReceiveLogin7Response()
LoggingUtilities.WriteLog($" Login7 response received.");
}

private void PrintTdsToken(TDSToken token)
{
if (token is TDSEnvChangeToken)
{
var envChangeToken = token as TDSEnvChangeToken;
if (envChangeToken.Type == Tokens.EnvChange.TDSEnvChangeType.Routing)
{
LoggingUtilities.WriteLog($" Client received EnvChange routing token, client is being routed.");
this.Server = envChangeToken.Values["AlternateServer"];
this.Port = int.Parse(envChangeToken.Values["ProtocolProperty"]);
this.reconnect = true;
LoggingUtilities.WriteLog($" Redirect to {this.Server}:{this.Port}", writeToSummaryLog: true, writeToVerboseLog: false);
}
}
else if (token is TDSErrorToken)
{
var errorToken = token as TDSErrorToken;
LoggingUtilities.WriteLog($" Client received Error token, Number: {errorToken.Number}, State: {errorToken.State}", writeToSummaryLog: true); ;
LoggingUtilities.WriteLog($" MsgText: {errorToken.MsgText}");
LoggingUtilities.WriteLog($" Class: {errorToken.Class}");
LoggingUtilities.WriteLog($" ServerName: {errorToken.ServerName}");
LoggingUtilities.WriteLog($" ProcName: {errorToken.ProcName}");
LoggingUtilities.WriteLog($" LineNumber: {errorToken.LineNumber}");

if (errorToken.Number == 18456)
{
throw new Exception("Login failure.");
}
}
else if (token is TDSInfoToken)
{
var infoToken = token as TDSInfoToken;
LoggingUtilities.WriteLog($" Client received Info token:");

LoggingUtilities.WriteLog($" Number: {infoToken.Number}");
LoggingUtilities.WriteLog($" State: {infoToken.State}");
LoggingUtilities.WriteLog($" Class: {infoToken.Class}");
LoggingUtilities.WriteLog($" MsgText: {infoToken.MsgText}");
LoggingUtilities.WriteLog($" ServerName: {infoToken.ServerName}");
LoggingUtilities.WriteLog($" ProcName: {infoToken.ProcName}");
LoggingUtilities.WriteLog($" LineNumber: {infoToken.LineNumber}");
}
else if (token is TDSColMetadataToken colMetadataToken)
{
LoggingUtilities.WriteLog($" Client Column Metadata Info token:");

LoggingUtilities.WriteLog($" Columns: {colMetadataToken.Count}");
for (int i = 0; i < colMetadataToken.Metadata.Length; i++)
{
var metadata = colMetadataToken.Metadata[i];
LoggingUtilities.WriteLog($" Index: {i}");
LoggingUtilities.WriteLog($" Name: {metadata.ColumnName}");
LoggingUtilities.WriteLog($" Type: {metadata.Type.Type}");
LoggingUtilities.WriteLog("");
}
}
else if (token is TDSRowToken rowToken)
{
LoggingUtilities.WriteLog($" Client Row data token:");
for(int i = 0; i < rowToken.Values.Length; i++)
{
LoggingUtilities.WriteLog($" Row [{i}]: {rowToken.Values[i]?.ToString() ?? "NUll"}");
}
}
}

/// <summary>
/// Connect to the server.
/// </summary>
Expand Down Expand Up @@ -332,6 +371,59 @@ public void Connect()
}
}

public int queryCount = 0;
public (string[], object[][]) Query(string query)
{
var id = Interlocked.Increment(ref queryCount);
string[] colNames = Array.Empty<string>();
List<object[]> result = new List<object[]>();
try
{
var request = new TDSSqlBatchPacketData(query);
var header = new SqlHeaderPacketData(new TransactionDescriptorHeaderData((uint)id));
request.AllHeaders.Headers.Add(header);

TdsCommunicator.SendTDSMessage(request);

if (this.TdsCommunicator.ReceiveTDSMessage() is TDSTokenStreamPacketData response)
{
foreach (var token in response.Tokens)
{
PrintTdsToken(token);

if (token is TDSColMetadataToken colMetadataToken)
{
colNames = new string[colMetadataToken.Count];
for (int i = 0; i < colMetadataToken.Metadata.Length; i++)
{
var metadata = colMetadataToken.Metadata[i];
colNames[i] = metadata.ColumnName;
}
}
else if (token is TDSRowToken rowToken)
{
LoggingUtilities.WriteLog($" Client Row data token:");
result.Add(rowToken.Values);
}
}
}
else
{
throw new InvalidOperationException();
}
}
catch(Exception ex)
{
LoggingUtilities.WriteLog($"Exception:");
LoggingUtilities.WriteLog($"{ex.Message}");
if (ex.InnerException != null)
{
LoggingUtilities.WriteLog($"InnerException: {ex.InnerException.Message}");
}
}
return (colNames, result.ToArray());
}

private void MeasureDNSResolutionTime()
{
try
Expand Down
38 changes: 35 additions & 3 deletions TDSClient/TDSClient/TDS/Comms/TDSCommunicator.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ namespace TDSClient.TDS.Comms
using TDSClient.TDS.Interfaces;
using TDSClient.TDS.Login7;
using TDSClient.TDS.PreLogin;
using TDSClient.TDS.Query;
using TDSClient.TDS.Tokens;
using TDSClient.TDS.Utilities;
using static System.Net.Mime.MediaTypeNames;
Expand Down Expand Up @@ -221,9 +222,28 @@ public ITDSPacketData ReceiveTDSMessage()
}

case TDSCommunicatorState.SentLogin7RecordWithCompleteAuthToken:
{
var tokenStream = new TDSTokenStreamPacketData();
result = tokenStream;
result.Unpack(new MemoryStream(resultBuffer));
if (tokenStream.Tokens.Any( t=> t is TDSErrorToken err))
{
this.communicatorState = TDSCommunicatorState.LoginError;
}
else
{
this.communicatorState = TDSCommunicatorState.LoggedIn;
}
break;
}

case TDSCommunicatorState.SentSqlBatch:
{
result = new TDSTokenStreamPacketData();
result.Unpack(new MemoryStream(resultBuffer));

//Restore to base state
this.communicatorState = TDSCommunicatorState.LoggedIn;
break;
}

Expand Down Expand Up @@ -268,19 +288,26 @@ public void SendTDSMessage(ITDSPacketData data)

case TDSCommunicatorState.LoggedIn:
{
throw new NotSupportedException();
}
if (!(data is TDSSqlBatchPacketData))
{
throw new InvalidDataException();
}

this.innerTdsStream.CurrentOutboundMessageType = TDSMessageType.SQLBatch;
break;
}
default:
{
throw new InvalidOperationException();
}
}

var buffer = new byte[data.Length()];
data.Pack(new MemoryStream(buffer));
var memStream = new MemoryStream(buffer);
data.Pack(memStream);

this.innerStream.Write(buffer, 0, buffer.Length);
var hex = BitConverter.ToString(buffer).Replace("-", " ");

switch (this.communicatorState)
{
Expand All @@ -295,6 +322,11 @@ public void SendTDSMessage(ITDSPacketData data)
this.communicatorState = TDSCommunicatorState.SentLogin7RecordWithCompleteAuthToken;
break;
}
case TDSCommunicatorState.LoggedIn:
{
this.communicatorState = TDSCommunicatorState.SentSqlBatch;
break;
}
}
}
}
Expand Down
12 changes: 11 additions & 1 deletion TDSClient/TDSClient/TDS/Comms/TDSCommunicatorState.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,16 @@ public enum TDSCommunicatorState
/// <summary>
/// LoggedIn Communicator State
/// </summary>
LoggedIn
LoggedIn,

/// <summary>
/// LoginError Communicator State
/// </summary>
LoginError,

/// <summary>
/// Sent sql batch
/// </summary>
SentSqlBatch,
}
}
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