Go のサーバーを作成

npx @openapitools/openapi-generator-cli generate \
    -g go-server \
    -i ./hello.yaml \
    -o ./src \
    --api-package=api \
    --model-package=model \
    --additional-properties=withSeparateModelsAndApi=true

コードの修正

go/api_hello_service.go

/*
 * Hello
 *
 * ユーザ名を与えると挨拶を返してくれるAPI
 *
 * API version: 1.0.0
 * Generated by: OpenAPI Generator (https://openapi-generator.tech)
 */

package openapi

import (
    "context"
//  "net/http"
//  "errors"
)

// HelloApiService is a service that implements the logic for the HelloApiServicer
// This service should implement the business logic for every endpoint for the HelloApi API.
// Include any external packages or services that will be required by this service.
type HelloApiService struct {
}

// NewHelloApiService creates a default api service
func NewHelloApiService() HelloApiServicer {
    return &HelloApiService{}
}

// GetHello - 
func (s *HelloApiService) GetHello(ctx context.Context, userName string) (ImplResponse, error) {
    // TODO - update GetHello with the required logic for this service method.
    // Add api_hello_service.go to the .openapi-generator-ignore to avoid overwriting this service implementation when updating open api generation.

    //TODO: Uncomment the next line to return response Response(200, InlineResponse200{}) or use other options such as http.Ok ...
//  return Response(200, InlineResponse200{}), nil
    return Response(200, InlineResponse200{"Hello, " + userName + "!" }), nil
//  return Response(200, InlineResponse200{}), userName

    //TODO: Uncomment the next line to return response Response(400, {}) or use other options such as http.Ok ...
    //return Response(400, nil),nil

    //TODO: Uncomment the next line to return response Response(500, {}) or use other options such as http.Ok ...
    //return Response(500, nil),nil

    // return Response(http.StatusNotImplemented, nil), errors.New("GetHello method not implemented")
}

サーバーの実行

go run main.go

クライアントでアクセス

$ http http://0.0.0.0:8080/hello?userName=Scott
HTTP/1.1 200 OK
Content-Length: 30
Content-Type: application/json; charset=UTF-8
Date: Tue, 26 Oct 2021 02:53:45 GMT

{
    "HelloUser": "Hello, Scott!"
}

openapi-generator-cli (go-server)

Go のサーバーを作成