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package main
import (
"bytes"
"encoding/json"
"io/ioutil"
"log"
"reflect"
"text/template"
"github.com/alecthomas/jsonschema"
"github.com/kong/deck/file"
"github.com/kong/go-kong/kong"
)
const templateContent = `// Code generated by go generate; DO NOT EDIT.
package file
const contentSchema = ` + "`{{.Schema}}`\n"
type templateData struct {
Schema string
}
var (
// routes and services
anyOfNameOrID = []*jsonschema.Type{
{
Required: []string{"name"},
},
{
Required: []string{"id"},
},
}
anyOfUsernameOrID = []*jsonschema.Type{
{
Required: []string{"username"},
},
{
Required: []string{"id"},
},
}
)
func main() {
var reflector jsonschema.Reflector
reflector.ExpandedStruct = true
reflector.TypeMapper = func(typ reflect.Type) *jsonschema.Type {
// plugin configuration
if typ == reflect.TypeOf(kong.Configuration{}) {
return &jsonschema.Type{
Type: "object",
Properties: map[string]*jsonschema.Type{},
AdditionalProperties: []byte("true"),
}
}
return nil
}
schema := reflector.Reflect(file.Content{})
schema.Definitions["Service"].AnyOf = anyOfNameOrID
schema.Definitions["FService"].AnyOf = anyOfNameOrID
schema.Definitions["Route"].AnyOf = anyOfNameOrID
schema.Definitions["FRoute"].AnyOf = anyOfNameOrID
schema.Definitions["Consumer"].AnyOf = anyOfUsernameOrID
schema.Definitions["FConsumer"].AnyOf = anyOfUsernameOrID
schema.Definitions["Upstream"].Required = []string{"name"}
schema.Definitions["FUpstream"].Required = []string{"name"}
schema.Definitions["FTarget"].Required = []string{"target"}
schema.Definitions["FCACertificate"].Required = []string{"cert"}
schema.Definitions["FPlugin"].Required = []string{"name"}
schema.Definitions["FCertificate"].Required = []string{"id", "cert", "key"}
schema.Definitions["FCertificate"].Properties["snis"] = &jsonschema.Type{
Type: "array",
Items: &jsonschema.Type{
Type: "object",
Properties: map[string]*jsonschema.Type{
"name": {
Type: "string",
},
},
},
}
// creds
schema.Definitions["ACLGroup"].Required = []string{"group"}
schema.Definitions["BasicAuth"].Required = []string{"username", "password"}
schema.Definitions["HMACAuth"].Required = []string{"username", "secret"}
schema.Definitions["JWTAuth"].Required = []string{"algorithm", "key",
"secret"}
schema.Definitions["KeyAuth"].Required = []string{"key"}
schema.Definitions["Oauth2Credential"].Required = []string{"name",
"client_id", "redirect_uris", "client_secret"}
schema.Definitions["MTLSAuth"].Required = []string{"id", "subject_name"}
// Foreign references
stringType := &jsonschema.Type{Type: "string"}
schema.Definitions["FPlugin"].Properties["consumer"] = stringType
schema.Definitions["FPlugin"].Properties["service"] = stringType
schema.Definitions["FPlugin"].Properties["route"] = stringType
schema.Definitions["FService"].Properties["client_certificate"] = stringType
jsonSchema, err := json.MarshalIndent(schema, "", " ")
if err != nil {
log.Fatalln(err)
}
tmpl := template.New("codegen")
tmpl, err = tmpl.Parse(templateContent)
if err != nil {
log.Fatalln(err)
}
var buffer bytes.Buffer
err = tmpl.Execute(&buffer, templateData{string(jsonSchema)})
if err != nil {
log.Fatalln(err)
}
err = ioutil.WriteFile("schema.go", buffer.Bytes(), 0644)
if err != nil {
log.Fatalln(err)
}
}
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