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Error: The type initializer for 'VendorProductsParserLib.Parser' threw an exception. #43

Open zgogiashvili opened 10 months ago

zgogiashvili commented 10 months ago

Hello,

I am new to SQL Server Language Extensions framework development and therefore, ran into some issues which I couldn't resolve by myself. More specifically, I want to use an external library (written in C# on .Net 6.0 platform) and invoke some methods to get string results and pass this result back to SQL Server calling procedure with sqlParams output parameter (SqlDataType varchar(max)). The library method works fine when invoked by console app but fails with the following error messages when invoked from within AbstractSqlServerExtensionExecutor-derived class by running sp_execute_external_script from SQL Server instance. External Language and External Library both are installed correctly and worked properly when I tested with a simple input/output dataset but as soon as I tried to link my DataIntegrationExecutor class (derived as I already mentioned above from AbstractSqlServerExtensionExecutor) I get errors. Below I give a fragment of my code (which I think causes error when initializing type but I can't understand a reason for the error). So, here is a code fragment:

static Parser() { httpClient = new HttpClient(); connectionString = $"Server={Environment.MachineName};Initial Catalog={Settings.Default.InitialCatalog};Integrated Security=True"; connection = new SqlConnection(connectionString); errorLoggingCommand = connection.CreateCommand(); errorLoggingCommand.CommandType = CommandType.StoredProcedure; errorLoggingCommand.CommandText = "dbo.uspErrorLogging"; connection.Open(); }

Msg 39004, Level 16, State 20, Line 3 A 'CSharp' script error occurred during execution of 'sp_execute_external_script' with HRESULT 0x80004004. STDOUT message(s) from external script: nativecsharpextension::Init DotnetEnvironment::to_utf16_str DotnetEnvironment::Init DotnetEnvironment::load_hostfxr DotnetEnvironment::load_library DotnetEnvironment::get_export DotnetEnvironment::get_export DotnetEnvironment::get_export DotnetEnvironment::get_dotnet DotnetEnvironment::get_dotnet_load_assembly DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::Init nativecsharpextension::InitSession DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::InitSession CSharpSession::CSharpSession nativecsharpextension::InitColumn DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::InitColumn CSharpSession::InitInputColumn CSharpInputDataSet::InitColumn nativecsharpextension::InitColumn DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::InitColumn CSharpSession::InitInputColumn CSharpInputDataSet::InitColumn nativecsharpextension::InitParam DotnetEnvironment::to_utf16_s STDOUT message(s) from external script: tr DotnetEnvironment::to_utf16_str CSharpExtension::InitParam CSharpSession::InitParam CSharpParamContainer::AddParam nativecsharpextension::Execute DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::Execute CSharpSession::Execute CSharpInputDataSet::AddColumns CSharpInputDataSet::AddColumn CSharpInputDataSet::AddColumn CSharpUserDll::InstantiateUserExecutor at VendorProductsParserLib.Parser.ParseVendorProducts(Vendors vendor, ProductTypes productType) in C:\Users\Zviad\source\repos\SqlCSharpLanguageExtensions\VendorProductsParserLib\Parser.cs:line 468 at DataIntegrationLib.DataIntegrationExecutor.Execute(DataFrame input, Dictionary`2 sqlParams) in C:\Users\Zviad\source\repos\SqlCSharpLanguageExtensions\DataIntegrationLib\DataIntegration.cs:line 24 at Microsoft.SqlServer.CSharpExtension.CSharpSession.Execute(UInt64 rowsNumber, Void data, Int32 strLenOrNullMap, UInt16* outputSchemaColumnsNumber) in C:__w\1\s\sql-server-language-extensions\language-ext STDOUT message(s) from external script: ensions\dotnet-core-CSharp\src\managed\CSharpSession.cs:line 189 at Microsoft.SqlServer.CSharpExtension.CSharpExtension.<>c__DisplayClass14_0.b0() in C:\w\1\s\sql-server-language-extensions\language-extensions\dotnet-core-CSharp\src\managed\CSharpExtension.cs:line 432 at Microsoft.SqlServer.CSharpExtension.ExceptionUtils.WrapError(Action func) in C:__w\1\s\sql-server-language-extensions\language-extensions\dotnet-core-CSharp\src\managed\utils\ExceptionUtils.cs:line 35Error: The type initializer for 'VendorProductsParserLib.Parser' threw an exception. nativecsharpextension::CleanupSession DotnetEnvironment::to_utf16_str DotnetEnvironment::to_utf16_str CSharpExtension::CleanupSession CSharpSession::CleanupSession CSharpParamContainer:HandleCleanup CSharpOutputDataSet::HandleCleanup nativecsharpextension::Cleanup

Is using of System.Data.SqlClient 4.8.5 package allowed in libraries which are loaded by External Library installed as a CSharp Language extension on SQL Server 2019 CU21 instance?

I would also be so grateful if you could instruct how to debug this library from within Visual Studio 2022 because starting debugging SQL Script from Visual Studio (which I used to use for debugging CLR stored procedures) didn't have an expected result i.e. debugging didn't work.

Regards,

Zviad Gogiashvili