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SqlClr CURL
Implementation of CURL function using CLR assemblies hosted in SQL Server
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‎samples/features/sql-clr/Curl/.gitignore‎

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*.cproj.user
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.vs/*
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.vscode/*
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bin/*
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obj/*
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*.log
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Properties/PublishProfiles/*

‎samples/features/sql-clr/Curl/Curl.cs‎

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using Microsoft.SqlServer.Server;
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using System;
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using System.Data.SqlTypes;
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using System.Net;
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/// <summary>
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/// Provides CURL-like functionalities in T-SQL code.
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/// </summary>
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public partial class Curl
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{
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[SqlFunction]
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[return: SqlFacet(MaxSize = -1)]
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public static SqlChars Get(SqlChars H, SqlChars url)
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{
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var client = new WebClient();
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if (!H.IsNull)
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{
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var header = H.ToSqlString().Value;
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if (!string.IsNullOrWhiteSpace(header))
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client.Headers.Add(header);
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}
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return new SqlChars(
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client.DownloadString(
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Uri.EscapeUriString(url.ToSqlString().Value)
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).ToCharArray());
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}
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[SqlProcedure]
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public static void Post(SqlChars H, SqlChars d, SqlChars url)
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{
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var client = new WebClient();
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if (!H.IsNull)
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{
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var header = H.ToSqlString().Value;
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if (!string.IsNullOrWhiteSpace(header))
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client.Headers.Add(header);
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}
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if(d.IsNull)
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throw new ArgumentException("You must specify data that will be sent to the endpoint", "@d");
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var response =
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client.UploadString(
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Uri.EscapeUriString(url.ToSqlString().Value),
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d.ToSqlString().Value
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);
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SqlContext.Pipe.Send(response);
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}
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};

‎samples/features/sql-clr/Curl/Properties/AssemblyInfo.cs‎

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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("SqlClrCurl")]
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[assembly: AssemblyDescription("Implementation of CURL command in SQL Server Database Engine")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("Microsoft")]
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[assembly: AssemblyProduct("Sql Server GitHub Samples")]
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[assembly: AssemblyCopyright("Copyright © 2018")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("265e0bc3-ad5f-44f3-bb17-c61f77b9847f")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

‎samples/features/sql-clr/Curl/README.md‎

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‎samples/features/sql-clr/Curl/SqlClrCurl.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}</ProjectGuid>
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<OutputType>Library</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>SqlClr</RootNamespace>
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<AssemblyName>SqlClrCurl</AssemblyName>
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<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup>
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<SignAssembly>true</SignAssembly>
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</PropertyGroup>
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<PropertyGroup>
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<AssemblyOriginatorKeyFile>SqlClrCurl.pfx</AssemblyOriginatorKeyFile>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Curl.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="README.md" />
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<None Include="SqlClrCurl.pfx" />
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</ItemGroup>
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<ItemGroup>
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<Service Include="{508349B6-6B84-4DF5-91F0-309BEEBAD82D}" />
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</ItemGroup>
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<ItemGroup>
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<Content Include=".gitignore" />
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<Content Include="SqlClrCurl.sql">
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<AutoGen>True</AutoGen>
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<DesignTime>True</DesignTime>
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<DependentUpon>SqlClrCurl.tt</DependentUpon>
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</Content>
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<Content Include="SqlClrCurl.tt">
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<Generator>TextTemplatingFileGenerator</Generator>
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<LastGenOutput>SqlClrCurl.sql</LastGenOutput>
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</Content>
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>

‎samples/features/sql-clr/Curl/SqlClrCurl.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.26730.16
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SqlClrCurl", "SqlClrCurl.csproj", "{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{265E0BC3-AD5F-44F3-BB17-C61F77B9847F}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {54C7E749-77A3-460D-A89A-5AB7943A1F15}
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EndGlobalSection
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EndGlobal

‎samples/features/sql-clr/Curl/SqlClrCurl.sql‎

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-- Enable CLR
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sp_configure 'clr enabled', 1;
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RECONFIGURE WITH OVERRIDE;
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GO
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--Drop the functions if they already exist
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DROP FUNCTION IF EXISTS CURL.XGET
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GO
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DROP PROCEDURE IF EXISTS CURL.XPOST
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GO
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--Drop the schema if it already exists
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DROP SCHEMA IF EXISTS CURL;
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GO
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--Drop "trusted assembly flag" if it is set
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DECLARE @hash VARBINARY(64);
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SELECT @hash = hash
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FROM sys.trusted_assemblies ta
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WHERE ta.description = N'SqlClrCurl'
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EXEC sp_drop_trusted_assembly @hash;
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GO
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--Drop the assembly if it already exists
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DROP ASSEMBLY IF EXISTS SqlClrCurl;
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GO
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DECLARE @hash VARBINARY(64);
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SELECT @hash = HASHBYTES('SHA2_512', BulkColumn)
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FROM OPENROWSET(BULK 'C:\GitHub\sql-server-samples\samples\features\sql-clr\Curl\bin\Release\SqlClrCurl.dll', SINGLE_BLOB) AS assembly_content
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IF(@hash IS NOT NULL)
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EXEC sp_add_trusted_assembly @hash, N'SqlClrCurl'
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ELSE
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PRINT 'Cannot create hash for assembly!'
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GO
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--Create the assembly
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CREATE ASSEMBLY SqlClrCurl
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FROM 'C:\GitHub\sql-server-samples\samples\features\sql-clr\Curl\bin\Release\SqlClrCurl.dll'
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WITH PERMISSION_SET = EXTERNAL_ACCESS;
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GO
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--Create the schema where CURL modules will be placed.
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CREATE SCHEMA CURL;
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GO
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--Create the function/procedure
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CREATE FUNCTION CURL.XGET (@H NVARCHAR(MAX), @url NVARCHAR(4000))
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RETURNS NVARCHAR(MAX)
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AS EXTERNAL NAME SqlClrCurl.Curl.Get;
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GO
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CREATE PROCEDURE CURL.XPOST (@H NVARCHAR(MAX), @d NVARCHAR(MAX), @url NVARCHAR(4000))
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AS EXTERNAL NAME SqlClrCurl.Curl.Post;
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GO

‎samples/features/sql-clr/Curl/SqlClrCurl.tt‎

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<#@output extension=".sql"#>
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<#@ template language="C#" hostspecific="True" #>
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-- Enable CLR
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sp_configure 'clr enabled', 1;
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RECONFIGURE WITH OVERRIDE;
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GO
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--Drop the functions if they already exist
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DROP FUNCTION IF EXISTS CURL.XGET
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GO
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DROP PROCEDURE IF EXISTS CURL.XPOST
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GO
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--Drop the schema if it already exists
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DROP SCHEMA IF EXISTS CURL;
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GO
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--Drop "trusted assembly flag" if it is set
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DECLARE @hash VARBINARY(64);
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SELECT @hash = hash
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FROM sys.trusted_assemblies ta
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WHERE ta.description = N'SqlClrCurl'
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EXEC sp_drop_trusted_assembly @hash;
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GO
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--Drop the assembly if it already exists
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DROP ASSEMBLY IF EXISTS SqlClrCurl;
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GO
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DECLARE @hash VARBINARY(64);
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SELECT @hash = HASHBYTES('SHA2_512', BulkColumn)
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FROM OPENROWSET(BULK '<#= this.Host.ResolvePath("bin\\Release\\SqlClrCurl.dll") #>', SINGLE_BLOB) AS assembly_content
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IF(@hash IS NOT NULL)
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EXEC sp_add_trusted_assembly @hash, N'SqlClrCurl'
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ELSE
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PRINT 'Cannot create hash for assembly!'
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GO
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--Create the assembly
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CREATE ASSEMBLY SqlClrCurl
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FROM '<#= this.Host.ResolvePath("bin\\Release\\SqlClrCurl.dll") #>'
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WITH PERMISSION_SET = EXTERNAL_ACCESS;
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GO
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--Create the schema where CURL modules will be placed.
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CREATE SCHEMA CURL;
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GO
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--Create the function/procedure
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CREATE FUNCTION CURL.XGET (@H NVARCHAR(MAX), @url NVARCHAR(4000))
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RETURNS NVARCHAR(MAX)
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AS EXTERNAL NAME SqlClrCurl.Curl.Get;
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GO
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CREATE PROCEDURE CURL.XPOST (@H NVARCHAR(MAX), @d NVARCHAR(MAX), @url NVARCHAR(4000))
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AS EXTERNAL NAME SqlClrCurl.Curl.Post;
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GO

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