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Swagger UI

Enable Swagger UI.

Prerequisite#

We will use swag to generate swagger UI config files.

Through swag 

$ go get -u github.com/swaggo/swag/cmd/swag

Install#

go get github.com/rookie-ninja/rk-boot/v2
go get github.com/rookie-ninja/rk-gin/v2

Swagger options#

name description type default value
gin.sw.enabled Enable Swagger UI boolean false
gin.sw.path Path of Swagger Web UI string sw
gin.sw.jsonPath Path Swagger config（swagger.json）file string ""
gin.sw.headers Headers returned by server, format: [key:value] []string []

Quick start#

1.Create boot.yaml#

rk-boot will search docs/, api/gen/v1/ folder for swagger JSON file

If swagger JSON located at other location，gin.sw.jsonPath needs to be configured

---
gin:
  - name: greeter
    port: 8080
    enabled: true
    sw:
      enabled: true
#      jsonPath: ""
#      path: "sw"
#      headers: []

2.Create main.go#

In order to create Swagger JSON file with swag，comments needs to be added in codes

Please refer to swag

package main

import (
  "context"
  "fmt"
  "github.com/gin-gonic/gin"
  "github.com/rookie-ninja/rk-boot/v2"
  "github.com/rookie-ninja/rk-gin/v2/boot"
  "net/http"
)

// @title Swagger Example API
// @version 1.0
// @description This is a sample rk-demo server.
// @termsOfService http://swagger.io/terms/

// @securityDefinitions.basic BasicAuth

// @contact.name API Support
// @contact.url http://www.swagger.io/support
// @contact.email support@swagger.io

// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html
func main() {
  // Create a new boot instance.
  boot := rkboot.NewBoot()

  // Register handler
  entry := rkgin.GetGinEntry("greeter")
  entry.Router.GET("/v1/greeter", Greeter)

  // Bootstrap
  boot.Bootstrap(context.TODO())

  boot.WaitForShutdownSig(context.TODO())
}

// Greeter handler
// @Summary Greeter
// @Id 1
// @Tags Hello
// @version 1.0
// @Param name query string true "name"
// @produce application/json
// @Success 200 {object} GreeterResponse
// @Router /v1/greeter [get]
func Greeter(ctx *gin.Context) {
  ctx.JSON(http.StatusOK, &GreeterResponse{
    Message: fmt.Sprintf("Hello %s!", ctx.Query("name")),
  })
}

type GreeterResponse struct {
  Message string
}

3.Generate swagger config file#

$ swag init

# swagger.json, swagger.yaml, docs.go files will be generated under ./docs folder.
$ tree
.
├── boot.yaml
├── docs
│   ├── docs.go
│   ├── swagger.json
│   └── swagger.yaml
├── go.mod
├── go.sum
└── main.go

1 directory, 7 files

4.Validate#

Swagger: http://localhost:8080/sw

Cheers#