HeavenVR Posts - Answer Overflow

HeavenVR

•Created by HeavenVR on 5/8/2025 in #help

Roslyn Incremental CodeGen from text files not working

I wrote this codegen dll for internal use in the project, but i cannot reference the generated source code in the "CodeGen" project Referencing it from "Common" project:

<Project Sdk="Microsoft.NET.Sdk.Web">
  ...

  <ItemGroup>
    <ProjectReference Include="..\CodeGen\CodeGen.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  </ItemGroup>
</Project>

<Project Sdk="Microsoft.NET.Sdk.Web">
  ...

  <ItemGroup>
    <ProjectReference Include="..\CodeGen\CodeGen.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  </ItemGroup>
</Project>

The "CodeGen" csproj:

<Project Sdk="Microsoft.NET.Sdk">
  <Import Project="../Shared.props" />

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" IncludeAssets="runtime; build; native; contentfiles; analyzers; buildtransitive" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.13.0" PrivateAssets="all" />
  </ItemGroup>

  <ItemGroup>
    <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true"  PackagePath="analyzers/dotnet/cs" Visible="false" />
  </ItemGroup>

  <ItemGroup>
    <AdditionalFiles Include="../cloudflare-ips-v4.txt" />
    <AdditionalFiles Include="../cloudflare-ips-v6.txt" />
  </ItemGroup>
</Project>

<Project Sdk="Microsoft.NET.Sdk">
  <Import Project="../Shared.props" />

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" IncludeAssets="runtime; build; native; contentfiles; analyzers; buildtransitive" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.13.0" PrivateAssets="all" />
  </ItemGroup>

  <ItemGroup>
    <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true"  PackagePath="analyzers/dotnet/cs" Visible="false" />
  </ItemGroup>

  <ItemGroup>
    <AdditionalFiles Include="../cloudflare-ips-v4.txt" />
    <AdditionalFiles Include="../cloudflare-ips-v6.txt" />
  </ItemGroup>
</Project>

The codegen source:

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Text;
using System.Text;

namespace OpenShock.CodeGen;

[Generator]
internal class CloudflareProxiesGenerator : IIncrementalGenerator
{
    private const string IpV4Name = "cloudflare-ips-v4.txt";
    private const string IpV6Name = "cloudflare-ips-v6.txt";

    public void Initialize(IncrementalGeneratorInitializationContext context)
    {
        var additionalFiles = context.AdditionalTextsProvider
            .Where(file => file.Path.EndsWith(IpV4Name) || file.Path.EndsWith(IpV6Name))
            .Collect();

        context.RegisterSourceOutput(additionalFiles, (ctx, files) =>
        {
            var ipv4Lines = files.FirstOrDefault(f => f.Path.EndsWith(IpV4Name))?.GetText()?.Lines.Select(l => l.ToString().Trim()).Where(l => !string.IsNullOrEmpty(l)) ?? [];
            var ipv6Lines = files.FirstOrDefault(f => f.Path.EndsWith(IpV6Name))?.GetText()?.Lines.Select(l => l.ToString().Trim()).Where(l => !string.IsNullOrEmpty(l)) ?? [];

            var sourceBuilder = new StringBuilder();
            sourceBuilder.AppendLine("using IPNetwork = Microsoft.AspNetCore.HttpOverrides.IPNetwork;");
            sourceBuilder.AppendLine();
            sourceBuilder.AppendLine("namespace OpenShock;");
            sourceBuilder.AppendLine();
            sourceBuilder.AppendLine("public static class CloudflareProxies");
            sourceBuilder.AppendLine("{");
            sourceBuilder.AppendLine("    public static readonly IPNetwork[] PrefetchedCloudflareProxies = [");

            sourceBuilder.AppendLine("        // IPv4");
            foreach (var line in ipv4Lines)
                sourceBuilder.AppendLine($"        IPNetwork.Parse(\"{line}\"),");

            sourceBuilder.AppendLine("\n        // IPv6");
            foreach (var line in ipv6Lines)
                sourceBuilder.AppendLine($"        IPNetwork.Parse(\"{line}\"),");

            sourceBuilder.AppendLine("    ];");
            sourceBuilder.AppendLine("}");

            ctx.AddSource("CloudflareProxies.g.cs", SourceText.From(sourceBuilder.ToString(), Encoding.UTF8));
        });
    }
}

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Text;
using System.Text;

namespace OpenShock.CodeGen;

[Generator]
internal class CloudflareProxiesGenerator : IIncrementalGenerator
{
    private const string IpV4Name = "cloudflare-ips-v4.txt";
    private const string IpV6Name = "cloudflare-ips-v6.txt";

    public void Initialize(IncrementalGeneratorInitializationContext context)
    {
        var additionalFiles = context.AdditionalTextsProvider
            .Where(file => file.Path.EndsWith(IpV4Name) || file.Path.EndsWith(IpV6Name))
            .Collect();

        context.RegisterSourceOutput(additionalFiles, (ctx, files) =>
        {
            var ipv4Lines = files.FirstOrDefault(f => f.Path.EndsWith(IpV4Name))?.GetText()?.Lines.Select(l => l.ToString().Trim()).Where(l => !string.IsNullOrEmpty(l)) ?? [];
            var ipv6Lines = files.FirstOrDefault(f => f.Path.EndsWith(IpV6Name))?.GetText()?.Lines.Select(l => l.ToString().Trim()).Where(l => !string.IsNullOrEmpty(l)) ?? [];

            var sourceBuilder = new StringBuilder();
            sourceBuilder.AppendLine("using IPNetwork = Microsoft.AspNetCore.HttpOverrides.IPNetwork;");
            sourceBuilder.AppendLine();
            sourceBuilder.AppendLine("namespace OpenShock;");
            sourceBuilder.AppendLine();
            sourceBuilder.AppendLine("public static class CloudflareProxies");
            sourceBuilder.AppendLine("{");
            sourceBuilder.AppendLine("    public static readonly IPNetwork[] PrefetchedCloudflareProxies = [");

            sourceBuilder.AppendLine("        // IPv4");
            foreach (var line in ipv4Lines)
                sourceBuilder.AppendLine($"        IPNetwork.Parse(\"{line}\"),");

            sourceBuilder.AppendLine("\n        // IPv6");
            foreach (var line in ipv6Lines)
                sourceBuilder.AppendLine($"        IPNetwork.Parse(\"{line}\"),");

            sourceBuilder.AppendLine("    ];");
            sourceBuilder.AppendLine("}");

            ctx.AddSource("CloudflareProxies.g.cs", SourceText.From(sourceBuilder.ToString(), Encoding.UTF8));
        });
    }
}

32 replies

CC#

•Created by HeavenVR on 4/29/2025 in #help

✅ Microsoft.AspNetCore.OpenApi possible bug with valuetypes

I get this exception whenever i try having a baseresponse of type Guid or an enum type. The example endpoint can be annotated with: [ProducesResponseType<MyResponseWrapperClass<Guid>>(StatusCodes.Status200OK, MediaTypeNames.Application.Json)] this will cause an exception on generating the openapi docs:

System.Text.Json.JsonException: The JSON value could not be converted to System.Guid.
   at System.Text.Json.ThrowHelper.ThrowJsonException_DeserializeUnableToConvertValue(Type propertyType)
   at System.Text.Json.JsonSerializer.UnboxOnWrite[T](Object value)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.SerializeAsObject(Utf8JsonWriter writer, Object rootValue)
   at System.Text.Json.JsonSerializer.WriteNodeAsObject(Object value, JsonTypeInfo jsonTypeInfo)
   at System.Text.Json.Schema.JsonSchemaExporter.MapJsonSchemaCore(GenerationState& state, JsonTypeInfo typeInfo, JsonPropertyInfo propertyInfo, JsonConverter customConverter, Nullable`1 customNumberHandling, JsonTypeInfo parentPolymorphicTypeInfo, Boolean parentPolymorphicTypeContainsTypesWithoutDiscriminator, Boolean parentPolymorphicTypeIsNonNullable, Nullable`1 typeDiscriminator, Boolean cacheResult)
   at System.Text.Json.Schema.JsonSchemaExporter.GetJsonSchemaAsNode(JsonTypeInfo typeInfo, JsonSchemaExporterOptions exporterOptions)
   at System.Text.Json.Schema.JsonSchemaExporter.GetJsonSchemaAsNode(JsonSerializerOptions options, Type type, JsonSchemaExporterOptions exporterOptions)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaService.CreateSchema(OpenApiSchemaKey key)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaStore.GetOrAdd(OpenApiSchemaKey key, Func`2 valueFactory)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaService.GetOrCreateSchemaAsync(Type type, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, ApiParameterDescription parameterDescription, Boolean captureSchemaByRef, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetResponseAsync(ApiDescription apiDescription, Int32 statusCode, ApiResponseType apiResponseType, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetResponsesAsync(ApiDescription description, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOperationAsync(ApiDescription description, HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOperationsAsync(IGrouping`2 descriptions, HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiOperationTransformer[] operationTransformers, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOpenApiPathsAsync(HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiOperationTransformer[] operationTransformers, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOpenApiDocumentAsync(IServiceProvider scopedServiceProvider, HttpRequest httpRequest, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Builder.OpenApiEndpointRouteBuilderExtensions.<>c__DisplayClass0_0.<<MapOpenApi>b__0>d.MoveNext()

System.Text.Json.JsonException: The JSON value could not be converted to System.Guid.
   at System.Text.Json.ThrowHelper.ThrowJsonException_DeserializeUnableToConvertValue(Type propertyType)
   at System.Text.Json.JsonSerializer.UnboxOnWrite[T](Object value)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.SerializeAsObject(Utf8JsonWriter writer, Object rootValue)
   at System.Text.Json.JsonSerializer.WriteNodeAsObject(Object value, JsonTypeInfo jsonTypeInfo)
   at System.Text.Json.Schema.JsonSchemaExporter.MapJsonSchemaCore(GenerationState& state, JsonTypeInfo typeInfo, JsonPropertyInfo propertyInfo, JsonConverter customConverter, Nullable`1 customNumberHandling, JsonTypeInfo parentPolymorphicTypeInfo, Boolean parentPolymorphicTypeContainsTypesWithoutDiscriminator, Boolean parentPolymorphicTypeIsNonNullable, Nullable`1 typeDiscriminator, Boolean cacheResult)
   at System.Text.Json.Schema.JsonSchemaExporter.GetJsonSchemaAsNode(JsonTypeInfo typeInfo, JsonSchemaExporterOptions exporterOptions)
   at System.Text.Json.Schema.JsonSchemaExporter.GetJsonSchemaAsNode(JsonSerializerOptions options, Type type, JsonSchemaExporterOptions exporterOptions)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaService.CreateSchema(OpenApiSchemaKey key)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaStore.GetOrAdd(OpenApiSchemaKey key, Func`2 valueFactory)
   at Microsoft.AspNetCore.OpenApi.OpenApiSchemaService.GetOrCreateSchemaAsync(Type type, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, ApiParameterDescription parameterDescription, Boolean captureSchemaByRef, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetResponseAsync(ApiDescription apiDescription, Int32 statusCode, ApiResponseType apiResponseType, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetResponsesAsync(ApiDescription description, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOperationAsync(ApiDescription description, HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOperationsAsync(IGrouping`2 descriptions, HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiOperationTransformer[] operationTransformers, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOpenApiPathsAsync(HashSet`1 capturedTags, IServiceProvider scopedServiceProvider, IOpenApiOperationTransformer[] operationTransformers, IOpenApiSchemaTransformer[] schemaTransformers, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.OpenApi.OpenApiDocumentService.GetOpenApiDocumentAsync(IServiceProvider scopedServiceProvider, HttpRequest httpRequest, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Builder.OpenApiEndpointRouteBuilderExtensions.<>c__DisplayClass0_0.<<MapOpenApi>b__0>d.MoveNext()

2 replies

CC#

•Created by HeavenVR on 4/28/2025 in #help

Microsoft.AspNetCore.OpenApi throws confusing exception (transitioning away from swagger)

23 replies

CC#

•Created by HeavenVR on 10/29/2024 in #help

Is there a better way to write this QueryBuilder?

Its my first time writing one and i want to make sure im doing it right

public static class IQueryableExtensions
{
    private static Expression<Func<TEntity, bool>> EntityPropExpr<TEntity>(Expression navigationSelector, Func<InvocationExpression, BinaryExpression> binaryExpressionGetter)
    {
        // Create a parameter for TEntity (entity)
        var entityParameter = Expression.Parameter(typeof(TEntity), "entity");

        // Access the prop from the navigation selector
        var entityExpression = Expression.Invoke(navigationSelector, entityParameter);

        var binaryExpression = binaryExpressionGetter(entityExpression);

        // Build the lambda expression
        return Expression.Lambda<Func<TEntity, bool>>(binaryExpression, entityParameter);
    }

    private static BinaryExpression UserIdMatchesExpr(InvocationExpression userExpression, Guid userId)
    {
        return Expression.Equal(
            Expression.Property(userExpression, nameof(OpenShockDb.User.Id)),
            Expression.Constant(userId)
        );
    }

    private static Expression<Func<TEntity, bool>> IsUserMatchExpr<TEntity>(Expression navigationSelector, Guid userId)
    {
        return EntityPropExpr<TEntity>(navigationSelector, user => UserIdMatchesExpr(user, userId));
    }

    public static IQueryable<TEntity> WhereIsUser<TEntity>(this IQueryable<TEntity> source, Expression navigationSelector, Guid userId)
    {
        return source.Where(IsUserMatchExpr<TEntity>(navigationSelector, userId));
    }
}

public static class IQueryableExtensions
{
    private static Expression<Func<TEntity, bool>> EntityPropExpr<TEntity>(Expression navigationSelector, Func<InvocationExpression, BinaryExpression> binaryExpressionGetter)
    {
        // Create a parameter for TEntity (entity)
        var entityParameter = Expression.Parameter(typeof(TEntity), "entity");

        // Access the prop from the navigation selector
        var entityExpression = Expression.Invoke(navigationSelector, entityParameter);

        var binaryExpression = binaryExpressionGetter(entityExpression);

        // Build the lambda expression
        return Expression.Lambda<Func<TEntity, bool>>(binaryExpression, entityParameter);
    }

    private static BinaryExpression UserIdMatchesExpr(InvocationExpression userExpression, Guid userId)
    {
        return Expression.Equal(
            Expression.Property(userExpression, nameof(OpenShockDb.User.Id)),
            Expression.Constant(userId)
        );
    }

    private static Expression<Func<TEntity, bool>> IsUserMatchExpr<TEntity>(Expression navigationSelector, Guid userId)
    {
        return EntityPropExpr<TEntity>(navigationSelector, user => UserIdMatchesExpr(user, userId));
    }

    public static IQueryable<TEntity> WhereIsUser<TEntity>(this IQueryable<TEntity> source, Expression navigationSelector, Guid userId)
    {
        return source.Where(IsUserMatchExpr<TEntity>(navigationSelector, userId));
    }
}

6 replies

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