Grpc vs http benchmark5/8/2023 ![]() ![]() Once installed, you’ll need to use AutoRest’s command line interface to generate a C# client from the swagger.json file. To start using AutoRest, install it with npm: npm install -g autorest. Generating a Client from Swagger with AutoRest When you run the project a swagger.json file will be generated, which you can use to generate the client. It’s as simple as that for the server-side. public async Task AddEmployee(Employee employee) In ConfigureServices, register Swagger generator: Start by adding the the NuGet package Swashbuckle.AspNetCore. Let’s see an example of how to do this: Adding Swagger to your ASP.NET server For the client-side, you can use swagger-codegen and AutoRest to consume these JSON files and generate a client. For the server-side, you can use Swashbuckle.AspNetCore to add Swagger to your ASP.NET and produce said JSON files. There are several tools that do just that. After all, you know all the paths, operations, what parameters they expect, what are the parameter types, what are the responses, etc. ![]() With a JSON file like the one above, you can potentially create a C# client that has complete IntelliSense. "description": "maximum number of results to return", "description": "Returns all pets from the system that the user has access to", "description": "A sample API that uses a petstore as an example to demonstrate features in the swagger-2.0 specification", Here’s an example of a swagger file describing a web service called Swagger Petstore (I removed some parts for clarity): This JSON file is essentially the contract between the clients and the server. Types of each parameter and response objects.The expected parameters for each path and operation.For example, a single path like might accept a POST operation that adds a product and a GET operation that returns a product. Each path can handle different operations. The expected operations (GET, POST, …) for each path.These files are the API schema of the web service. It describes a REST web service with simple JSON files. OpenAPI, or Swagger, is a specification of a REST API. Like ReFit, Swagger is also built on top of REST. But there’s another option, which is even better in some ways. We now have IntelliSense and a strong contract between the client and the server. This gets much closer to the optimal scenario. ![]() There’s no need to run difficult automation or use any 3rd party tools beyond a couple of NuGet packages. Var employee = await api.GetEmployee( "abc") Here’s how a typical client and ASP.NET server looks like: In fact, ASP.NET Web API is built to be a REST web service by default. If you’re not familiar with REST until now, the above explanation is probably not going to cut it, so here’s an example. There’s a standard called RESTful API that defines the following rules (which you don’t really have to use it): Requests include parameters in the query itself or as a payload (usually JSON) when it’s a POST request. Each request is answered with a response that contains a payload (usually JSON). REST defines a fixed set of operations GET, POST, PUT, and DELETE for client to server requests. It’s now, by far, the most popular way to create web services. REST API appeared in the early 2000s and swept the internet by storm. So for the sake of this article, let’s keep things nice and stateless. Having a state in an API introduces complexity and that is the root of all evil.
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