traefik/vendor/github.com/go-openapi/spec/swagger.go

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// Copyright 2015 go-swagger maintainers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package spec
import (
"encoding/json"
"fmt"
"strconv"
"github.com/go-openapi/jsonpointer"
"github.com/go-openapi/swag"
)
// Swagger this is the root document object for the API specification.
// It combines what previously was the Resource Listing and API Declaration (version 1.2 and earlier) together into one document.
//
// For more information: http://goo.gl/8us55a#swagger-object-
type Swagger struct {
VendorExtensible
SwaggerProps
}
// JSONLookup look up a value by the json property name
func (s Swagger) JSONLookup(token string) (interface{}, error) {
if ex, ok := s.Extensions[token]; ok {
return &ex, nil
}
r, _, err := jsonpointer.GetForToken(s.SwaggerProps, token)
return r, err
}
// MarshalJSON marshals this swagger structure to json
func (s Swagger) MarshalJSON() ([]byte, error) {
b1, err := json.Marshal(s.SwaggerProps)
if err != nil {
return nil, err
}
b2, err := json.Marshal(s.VendorExtensible)
if err != nil {
return nil, err
}
return swag.ConcatJSON(b1, b2), nil
}
// UnmarshalJSON unmarshals a swagger spec from json
func (s *Swagger) UnmarshalJSON(data []byte) error {
var sw Swagger
if err := json.Unmarshal(data, &sw.SwaggerProps); err != nil {
return err
}
if err := json.Unmarshal(data, &sw.VendorExtensible); err != nil {
return err
}
*s = sw
return nil
}
type SwaggerProps struct {
ID string `json:"id,omitempty"`
Consumes []string `json:"consumes,omitempty"`
Produces []string `json:"produces,omitempty"`
Schemes []string `json:"schemes,omitempty"` // the scheme, when present must be from [http, https, ws, wss]
Swagger string `json:"swagger,omitempty"`
Info *Info `json:"info,omitempty"`
Host string `json:"host,omitempty"`
BasePath string `json:"basePath,omitempty"` // must start with a leading "/"
Paths *Paths `json:"paths"` // required
Definitions Definitions `json:"definitions"`
Parameters map[string]Parameter `json:"parameters,omitempty"`
Responses map[string]Response `json:"responses,omitempty"`
SecurityDefinitions SecurityDefinitions `json:"securityDefinitions,omitempty"`
Security []map[string][]string `json:"security,omitempty"`
Tags []Tag `json:"tags,omitempty"`
ExternalDocs *ExternalDocumentation `json:"externalDocs,omitempty"`
}
// Dependencies represent a dependencies property
type Dependencies map[string]SchemaOrStringArray
// SchemaOrBool represents a schema or boolean value, is biased towards true for the boolean property
type SchemaOrBool struct {
Allows bool
Schema *Schema
}
// JSONLookup implements an interface to customize json pointer lookup
func (s SchemaOrBool) JSONLookup(token string) (interface{}, error) {
if token == "allows" {
return s.Allows, nil
}
r, _, err := jsonpointer.GetForToken(s.Schema, token)
return r, err
}
var jsTrue = []byte("true")
var jsFalse = []byte("false")
// MarshalJSON convert this object to JSON
func (s SchemaOrBool) MarshalJSON() ([]byte, error) {
if s.Schema != nil {
return json.Marshal(s.Schema)
}
if s.Schema == nil && !s.Allows {
return jsFalse, nil
}
return jsTrue, nil
}
// UnmarshalJSON converts this bool or schema object from a JSON structure
func (s *SchemaOrBool) UnmarshalJSON(data []byte) error {
var nw SchemaOrBool
if len(data) >= 4 {
if data[0] == '{' {
var sch Schema
if err := json.Unmarshal(data, &sch); err != nil {
return err
}
nw.Schema = &sch
}
nw.Allows = !(data[0] == 'f' && data[1] == 'a' && data[2] == 'l' && data[3] == 's' && data[4] == 'e')
}
*s = nw
return nil
}
// SchemaOrStringArray represents a schema or a string array
type SchemaOrStringArray struct {
Schema *Schema
Property []string
}
// JSONLookup implements an interface to customize json pointer lookup
func (s SchemaOrStringArray) JSONLookup(token string) (interface{}, error) {
r, _, err := jsonpointer.GetForToken(s.Schema, token)
return r, err
}
// MarshalJSON converts this schema object or array into JSON structure
func (s SchemaOrStringArray) MarshalJSON() ([]byte, error) {
if len(s.Property) > 0 {
return json.Marshal(s.Property)
}
if s.Schema != nil {
return json.Marshal(s.Schema)
}
return nil, nil
}
// UnmarshalJSON converts this schema object or array from a JSON structure
func (s *SchemaOrStringArray) UnmarshalJSON(data []byte) error {
var first byte
if len(data) > 1 {
first = data[0]
}
var nw SchemaOrStringArray
if first == '{' {
var sch Schema
if err := json.Unmarshal(data, &sch); err != nil {
return err
}
nw.Schema = &sch
}
if first == '[' {
if err := json.Unmarshal(data, &nw.Property); err != nil {
return err
}
}
*s = nw
return nil
}
// Definitions contains the models explicitly defined in this spec
// An object to hold data types that can be consumed and produced by operations.
// These data types can be primitives, arrays or models.
//
// For more information: http://goo.gl/8us55a#definitionsObject
type Definitions map[string]Schema
// SecurityDefinitions a declaration of the security schemes available to be used in the specification.
// This does not enforce the security schemes on the operations and only serves to provide
// the relevant details for each scheme.
//
// For more information: http://goo.gl/8us55a#securityDefinitionsObject
type SecurityDefinitions map[string]*SecurityScheme
// StringOrArray represents a value that can either be a string
// or an array of strings. Mainly here for serialization purposes
type StringOrArray []string
// Contains returns true when the value is contained in the slice
func (s StringOrArray) Contains(value string) bool {
for _, str := range s {
if str == value {
return true
}
}
return false
}
// JSONLookup implements an interface to customize json pointer lookup
func (s SchemaOrArray) JSONLookup(token string) (interface{}, error) {
if _, err := strconv.Atoi(token); err == nil {
r, _, err := jsonpointer.GetForToken(s.Schemas, token)
return r, err
}
r, _, err := jsonpointer.GetForToken(s.Schema, token)
return r, err
}
// UnmarshalJSON unmarshals this string or array object from a JSON array or JSON string
func (s *StringOrArray) UnmarshalJSON(data []byte) error {
var first byte
if len(data) > 1 {
first = data[0]
}
if first == '[' {
var parsed []string
if err := json.Unmarshal(data, &parsed); err != nil {
return err
}
*s = StringOrArray(parsed)
return nil
}
var single interface{}
if err := json.Unmarshal(data, &single); err != nil {
return err
}
if single == nil {
return nil
}
switch single.(type) {
case string:
*s = StringOrArray([]string{single.(string)})
return nil
default:
return fmt.Errorf("only string or array is allowed, not %T", single)
}
}
// MarshalJSON converts this string or array to a JSON array or JSON string
func (s StringOrArray) MarshalJSON() ([]byte, error) {
if len(s) == 1 {
return json.Marshal([]string(s)[0])
}
return json.Marshal([]string(s))
}
// SchemaOrArray represents a value that can either be a Schema
// or an array of Schema. Mainly here for serialization purposes
type SchemaOrArray struct {
Schema *Schema
Schemas []Schema
}
// Len returns the number of schemas in this property
func (s SchemaOrArray) Len() int {
if s.Schema != nil {
return 1
}
return len(s.Schemas)
}
// ContainsType returns true when one of the schemas is of the specified type
func (s *SchemaOrArray) ContainsType(name string) bool {
if s.Schema != nil {
return s.Schema.Type != nil && s.Schema.Type.Contains(name)
}
return false
}
// MarshalJSON converts this schema object or array into JSON structure
func (s SchemaOrArray) MarshalJSON() ([]byte, error) {
if len(s.Schemas) > 0 {
return json.Marshal(s.Schemas)
}
return json.Marshal(s.Schema)
}
// UnmarshalJSON converts this schema object or array from a JSON structure
func (s *SchemaOrArray) UnmarshalJSON(data []byte) error {
var nw SchemaOrArray
var first byte
if len(data) > 1 {
first = data[0]
}
if first == '{' {
var sch Schema
if err := json.Unmarshal(data, &sch); err != nil {
return err
}
nw.Schema = &sch
}
if first == '[' {
if err := json.Unmarshal(data, &nw.Schemas); err != nil {
return err
}
}
*s = nw
return nil
}
// vim:set ft=go noet sts=2 sw=2 ts=2: