Multi Schema/Endpoint for HotChocolate Azure Functions.

Azure supports multiple endpoints using multiple functions, official implementation of HotChocolate (as 13.0.0-preview.66) does not yet.

I let it be as mush as possible aspnet like implementation, so we do not need to change a lot of code when coming from server project.

Azure Functions Isolated Process

Install

dotnet add package Markind.HotChocolate.AzureFunctions.IsolatedProcess

Why Markind? it is the name of the company I am willing to build. It is about to left mark in the earth.

Program

using Microsoft.Azure.Functions.Extensions.DependencyInjection; var host = new HostBuilder() .ConfigureFunctionsWorkerDefaults() .ConfigureServices(s =>{ s.AddGraphQLServer("persons") // schema 1 .AddQueryType<Query>(); s.AddGraphQLServer("persons2") // schema 2 , etc. .AddQueryType<Query2>(); }) .AddGraphQLFunctions()// Add support for Azure FunctionS .Build(); host.Run();

Similarly if using Startup.cs

Function

Again make sure to use IMultiSchemaRequestExecutor.

public class GraphQLFunction { private readonly IMultiSchemaRequestExecutor _executor; public GraphQLFunction(IMultiSchemaRequestExecutor executor) { _executor = executor; } [Function("GraphQLHttpFunction")] public Task<HttpResponseData> Run( [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = "persons/{**slug}")] HttpRequestData request) => _executor.ExecuteAsync(request, "persons"); }

Create the other functions and make sure to set the schema name executor.ExecuteAsync(request, "persons2");

Full sample at samples/Azf.IsolatedProcess

Sponsor it

Glad to be of help, it took me more than a week cracking my head :') to understand how it should work and give the easiest and smoothly solution possible. I am willing to improve it or fix issues if needed. So if you wish ❤️

Mentions

Base code is using official implementation of HotChocolate.AzureFunctions and I reviewed a lot GraphQL.AzureFunctionsProxy

Notice

This implementation has original implementation from HotChocolate.AzureFunctions as well, I made this way with the hope of integrate it in the official HotChocolate repo. Be sure to use .AddGraphQLFunctions() with s at the end, using without it you will be using original implementation that has no multi schema support.