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API Docs

Enable API Docs 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-echo

API Docs options#

name description type default value
echo.docs.enabled Enable API Docs boolean false
echo.docs.path API Docs Web path string docs
echo.docs.specPath Local Swagger config file（swagger.json）path string ""
echo.docs.headers Headers returned by server, format: [key:value] []string []
echo.docs.style.theme Web UI Theme，support light only currently string light
echo.docs.debug Enable Debug mode bool false

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，echo.docs.jsonPath needs to be configured

---
echo:
  - name: greeter
    port: 8080
    enabled: true
    docs:
      enabled: true                                        # Optional, default: false
#      path: "docs"                                        # Optional, default: "docs"
#      specPath: ""                                        # Optional
#      headers: ["sw:rk"]                                  # Optional, default: []
#      style:                                              # Optional
#        theme: "light"                                    # Optional, default: "light"
#      debug: false                                        # Optional, default: false

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/labstack/echo/v4"
  "github.com/rookie-ninja/rk-boot/v2"
  "github.com/rookie-ninja/rk-echo/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
  echoEntry := rkecho.GetEchoEntry("greeter")
  echoEntry.Echo.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 echo.Context) error {
  return ctx.JSON(http.StatusOK, &GreeterResponse{
    Message: fmt.Sprintf("Hello %s!", ctx.QueryParam("name")),
  })
}

type GreeterResponse struct {
  Message string
}

3.Generate swagger config#

$ 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#

API Docs: http://localhost:8080/sw

Cheers#

Debug mode#

By enable Debug mode，user can use docs UI as the same as swagger UI

Modify boot.yaml#

---
echo:
  - name: greeter
    port: 8080
    enabled: true
    docs:
      enabled: true                                        # Optional, default: false
      debug: true                                          # Optional, default: false
#      path: "docs"                                        # Optional, default: "docs"
#      specPath: ""                                        # Optional
#      headers: ["sw:rk"]                                  # Optional, default: []
#      style:                                              # Optional
#        theme: "light"                                    # Optional, default: "light"

Cheers#