RequestExecutorBuilderExtensions.cs

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using System;
 
using HotChocolate.Execution.Configuration;
using HotChocolate.Subscriptions;
using HotChocolate.Types;
 
using Microsoft.Extensions.DependencyInjection;
 
using Tgstation.Server.Api.Rights;
using Tgstation.Server.Host.Controllers;
using Tgstation.Server.Host.GraphQL;
using Tgstation.Server.Host.GraphQL.Metadata;
using Tgstation.Server.Host.GraphQL.Scalars;
using Tgstation.Server.Host.GraphQL.Types;
 
namespace Tgstation.Server.Host.Extensions
{
    public static class RequestExecutorBuilderExtensions
    {
        public static void ConfigureGraphQLServer(this IRequestExecutorBuilder builder)
            => (builder ?? throw new ArgumentNullException(nameof(builder)))
                .ModifyOptions(options =>
                {
                    options.EnsureAllNodesCanBeResolved = true;
                    options.EnableFlagEnums = true;
                })
#if DEBUG
                .ModifyCostOptions(options =>
                {
                    options.EnforceCostLimits = false;
                })
#endif
                .AddMutationConventions()
                .AddInMemorySubscriptions(
                    new SubscriptionOptions
                    {
                        TopicBufferCapacity = 1024, // mainly so high for tests, not possible to DoS the server without authentication and some other access to generate messages
                    })
                .AddGlobalObjectIdentification()
                .AddQueryFieldToMutationPayloads()
                .ModifyOptions(options =>
                {
                    options.EnableDefer = true;
                })
                .ModifyPagingOptions(pagingOptions =>
                {
                    pagingOptions.IncludeTotalCount = true;
                    pagingOptions.RequirePagingBoundaries = false;
                    pagingOptions.DefaultPageSize = ApiController.DefaultPageSize;
                    pagingOptions.MaxPageSize = ApiController.MaximumPageSize;
                })
                .AddFiltering()
                .AddSorting()
                .AddProjections()
                .AddHostTypes()
                .AddAuthorization()
                .ConfigureTypes();
 
        private static void ConfigureTypes(this IRequestExecutorBuilder builder)
            => builder
                .AddQueryType<Query>()
                .AddMutationType<Mutation>()
                .AddSubscriptionType<Subscription>()
                .AddType<StandaloneNode>()
                .AddType<LocalGateway>()
                .AddType<UserName>()
                .AddType<UnsignedIntType>()
                .TryAddTypeInterceptor<RightsTypeInterceptor>()
                .BindRuntimeType<Version, SemverType>()
                .AddRightsHolders();
 
        private static void AddRightsHolders(this IRequestExecutorBuilder builder)
        {
            var rightsHolderGeneric = typeof(RightsHolderType<>);
            foreach (var right in RightsHelper.AllRightTypes())
            {
                var instantiatedRightsHolder = rightsHolderGeneric.MakeGenericType(right);
                builder.AddType(instantiatedRightsHolder);
            }
        }
    }
}