demo that converts golang data structure to json schema

ConvertToJSONSchema.go

package main
import (
	"encoding/json"
	"fmt"
	"github.com/alecthomas/jsonschema"
	"time"
)
type TestUser struct {
	ID          int                    `json:"id"`
	Name        string                 `json:"name" jsonschema:"title=the name,description=The name of a friend,example=joe,example=lucy,default=alex"`
	Friends     []int                  `json:"friends,omitempty" jsonschema_description:"The list of IDs, omitted when empty"`
	Tags        map[string]interface{} `json:"tags,omitempty" jsonschema_extras:"a=b,foo=bar,foo=bar1"`
	BirthDate   time.Time              `json:"birth_date,omitempty" jsonschema:"oneof_required=date"`
	YearOfBirth string                 `json:"year_of_birth,omitempty" jsonschema:"oneof_required=year"`
	Metadata    interface{}            `json:"metadata,omitempty" jsonschema:"oneof_type=string;array"`
	FavColor    string                 `json:"fav_color,omitempty" jsonschema:"enum=red,enum=green,enum=blue"`
}
func main() {
	a := jsonschema.Reflect(&TestUser{})
	actualJSON, _ := json.MarshalIndent(a, "", "  ")
	fmt.Printf(string(actualJSON))
}