private async Task InitializeDbContextAsync(string kernelName, MsSqlKernelConnector options, KernelInvocationContext context)
{
CSharpKernel csharpKernel = null;
context.HandlingKernel.VisitSubkernelsAndSelf(k =>
{
if (k is CSharpKernel csk)
{
csharpKernel = csk;
}
});
if (csharpKernel is null)
{
return;
}
context.DisplayAs($"Scaffolding a `DbContext` and initializing an instance of it called `{kernelName}` in the C# kernel.", "text/markdown");
var submission1 = @$ "
#r " "nuget: Microsoft.EntityFrameworkCore.Design, 6.0.0" "
#r " "nuget: Microsoft.EntityFrameworkCore.SqlServer, 6.0.0" "
#r " "nuget: Humanizer.Core, 2.8.26" "
#r " "nuget: Humanizer, 2.8.26" "
#r " "nuget: Microsoft.Identity.Client, 4.35.1" "
using System;
using System.Reflection;
using System.Linq;
using Microsoft.EntityFrameworkCore.Design;
using Microsoft.EntityFrameworkCore.Scaffolding;
using Microsoft.Extensions.DependencyInjection;
var services = new ServiceCollection();
services.AddEntityFrameworkDesignTimeServices();
var providerAssembly = Assembly.Load(" "Microsoft.EntityFrameworkCore.SqlServer" ");
var providerServicesAttribute = providerAssembly.GetCustomAttribute<DesignTimeProviderServicesAttribute>();
var providerServicesType = providerAssembly.GetType(providerServicesAttribute.TypeName);
var providerServices = (IDesignTimeServices)Activator.CreateInstance(providerServicesType);
providerServices.ConfigureDesignTimeServices(services);
var serviceProvider = services.BuildServiceProvider();
var scaffolder = serviceProvider.GetService<IReverseEngineerScaffolder>();
var model = scaffolder.ScaffoldModel(
@" "{options.ConnectionString}" ",
new DatabaseModelFactoryOptions(),
new ModelReverseEngineerOptions(),
new ModelCodeGenerationOptions()
{{
ContextName = " "{kernelName}Context" ",
ModelNamespace = " "{kernelName}" "
}});
private async Task LoadScriptExtensionFromDirectory(
DirectoryInfo directory,
Kernel kernel,
KernelInvocationContext context)
{
var extensionFile = new FileInfo(Path.Combine(directory.FullName, ExtensionScriptName));
if (extensionFile.Exists)
{
var logMessage = $"Loading extension script from `{extensionFile.FullName}`";
using var op = new ConfirmationLogger(
Log.Category,
message: logMessage,
logOnStart: true,
args: new object[] { extensionFile });
context.DisplayAs(logMessage, "text/markdown");
var scriptContents = File.ReadAllText(extensionFile.FullName, Encoding.UTF8);
await kernel.SubmitCodeAsync(scriptContents);
}
}
private async Task LoadFromAssembly(
FileInfo assemblyFile,
Kernel kernel,
KernelInvocationContext context)
{
if (assemblyFile is null)
{
throw new ArgumentNullException(nameof(assemblyFile));
}
if (kernel is null)
{
throw new ArgumentNullException(nameof(kernel));
}
if (!assemblyFile.Exists)
{
throw new ArgumentException($"File {assemblyFile.FullName} doesn't exist", nameof(assemblyFile));
}
bool loadExtensions;
lock (_lock)
{
loadExtensions = _loadedAssemblies.Add(AssemblyName.GetAssemblyName(assemblyFile.FullName));
}
if (loadExtensions)
{
var assembly = AssemblyLoadContext.Default.LoadFromAssemblyPath(assemblyFile.FullName);
var extensionTypes = assembly
.ExportedTypes
.Where(t => t.CanBeInstantiated() && typeof(IKernelExtension).IsAssignableFrom(t))
.ToArray();
if (extensionTypes.Any())
{
context.DisplayAs($"Loading extensions from `{assemblyFile.Name}`", "text/markdown");
}
foreach (var extensionType in extensionTypes)
{
var extension = (IKernelExtension)Activator.CreateInstance(extensionType);
try
{
await extension.OnLoadAsync(kernel);
context.Publish(new KernelExtensionLoaded(extension, context.Command));
}
catch (Exception e)
{
context.Publish(new ErrorProduced(
$"Failed to load kernel extension \"{extensionType.Name}\" from assembly {assemblyFile.FullName}",
context.Command));
context.Fail(context.Command, new KernelExtensionLoadException(e));
}
}
}
}