swagger-petstore VS openapi-generator

Swagger offers more than just a user-friendly interface for exploring APIs. It also provides multiple generators that can produce code typically written by hand. As an Angular developer, this blog post will focus on the typescript-angular generator.

Failed to create a client for Java. The generator imports Java's types instead of TeamCity's. There are bugs described for the Java client in both the Swagger generator and the OpenAPI generator. Let's see how the generator behaves when building a Kotlin client.

[swagger-codegen](https://github.com/swagger-api/swagger-codegen) generates code from an OpenAPI definition, and it supports Rust code output (client and/or server).

Swagger contains three greats tools to work with the specification: Swagger UI, Swagger Editor and Swagger Codegen. The Swagger UI renders OpenAPI specs as interactive API documentation, Swagger Editor is a browser-based editor where you can write OpenAPI specs and Swagger Codegen generates server stubs and client libraries from an OpenAPI spec like the OpenAPI generator.

We ran into some minor issues (#1201, #1210, #1355, #1356 and #1769) and fixed some stuff we stumbled upon along the way, although it didn't really bother us as well (#1451 and #1769).

I am interested in integrating a swagger-codegen generated Python server with an existing Flask application. swagger-codegen generates a Python implementation based on the Connexion library from a Swagger API specification.

The method takes a query, String, and a completion block, (Result<[String], Error>) -> Void, which is triggered once the request finishes. Its internal implementation doesn't really matter since it could be from an external framework or generated by a code generator from the API specification.

The Java codegen options are here: https://github.com/swagger-api/swagger-codegen/issues/7795 (believe it or not).

Generate TypeScript clients automatically

> Ideally I'd like to be able to write types in typescript, and write python types, then verify that the types are compatible (not identical)

Have a look at https://fastapi.tiangolo.com/

FastAPI allows you to define your types in Python using Pydantic for stronger type guarantees. FastAPI also generates an OpenAPI.json file for your backend and then you can feed this OpenAPI.json document into https://github.com/OpenAPITools/openapi-generator to generate a typescript library that contains all the types. Then you don't need to verify your types, because the typescript types will be directly generated from your Python types. The generated typescript library also contains methods for each of your REST endpoints, so that you don't have to think about network requests.

Patches are also useful if we're making manual modifications to any codebase that is being auto-generated, i.e. if we're using openapi-generator off of an OpenAPI spec to create clients and scaffolded server codebases. We would want to maintain the patch as a way to ensure that subsequent re-generations of the code don't wipe out any manual changes we have to make in-between.

The beta version was able to generate the expected Quote model object, but I ran into issues trying to generate an interface or abstract class that my controllers could extend. So I decided to create an issue in the openapi-generator library (link for those who are interested in the details) and pivot toward another approach.

Step 1: Locate the Right Template For Spring-based projects, navigate to: JavaSpring/ Key templates to modify: model.mustache → Handles imports pojo.mustache → Defines annotation

It would be great if D supported something like OpenAPI generator https://github.com/OpenAPITools/openapi-generator

Maybe it exists and I am just ignorant but it doesn't seem to be in the list of supported languages.

various openapi-generator plugins

OpenAPI Generator Gradle Plugin

I'm also really happy with spec first. We're using openapi-generator[1] to generate types from a yaml schema (inverting the more standard approach of generating the yaml) in our Typescript (mostly Nest.js) backends, and export those types as packages for use in our frontends.

[1] https://github.com/OpenAPITools/openapi-generator