swagger

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 Go to latest Published: Oct 4, 2016 License: Apache-2.0, MIT Imports: 9 Imported by: 0

README

How to use Swagger UI with go-restful

Get the Swagger UI sources (version 1.2 only)

git clone https://github.com/wordnik/swagger-ui.git

The project contains a "dist" folder. Its contents has all the Swagger UI files you need.

The index.html has an url set to http://petstore.swagger.wordnik.com/api/api-docs. You need to change that to match your WebService JSON endpoint e.g. http://localhost:8080/apidocs.json

Now, you can install the Swagger WebService for serving the Swagger specification in JSON.

config := swagger.Config{
	WebServices:    restful.RegisteredWebServices(),
	ApiPath:        "/apidocs.json",
	SwaggerPath:     "/apidocs/",
	SwaggerFilePath: "/Users/emicklei/Projects/swagger-ui/dist"}
swagger.InstallSwaggerService(config)

Documenting Structs

Currently there are 2 ways to document your structs in the go-restful Swagger.

By using struct tags
  • Use tag "description" to annotate a struct field with a description to show in the UI
  • Use tag "modelDescription" to annotate the struct itself with a description to show in the UI. The tag can be added in an field of the struct and in case that there are multiple definition, they will be appended with an empty line.
By using the SwaggerDoc method

Here is an example with an Address struct and the documentation for each of the fields. The "" is a special entry for documenting the struct itself.

type Address struct {
	Country  string `json:"country,omitempty"`
	PostCode int    `json:"postcode,omitempty"`
}

func (Address) SwaggerDoc() map[string]string {
	return map[string]string{
		"":         "Address doc",
		"country":  "Country doc",
		"postcode": "PostCode doc",
	}
}

This example will generate a JSON like this

{
	"Address": {
		"id": "Address",
		"description": "Address doc",
		"properties": {
			"country": {
			"type": "string",
			"description": "Country doc"
			},
			"postcode": {
			"type": "integer",
			"format": "int32",
			"description": "PostCode doc"
			}
		}
	}
}

Very Important Notes:

  • SwaggerDoc() is using a NON-Pointer receiver (e.g. func (Address) and not func (*Address))
  • The returned map should use as key the name of the field as defined in the JSON parameter (e.g. "postcode" and not "PostCode")

Notes

  • The Nickname of an Operation is automatically set by finding the name of the function. You can override it using RouteBuilder.Operation(..)
  • The WebServices field of swagger.Config can be used to control which service you want to expose and document ; you can have multiple configs and therefore multiple endpoints.

Documentation

Overview

Package swagger implements the structures of the Swagger https://github.com/wordnik/swagger-spec/blob/master/versions/1.2.md

Index

Constants

This section is empty.

Variables

View Source 
var LogInfo = func(format string, v ...interface{}) {

	log.Printf(format, v...)
}

LogInfo is the function that is called when this package needs to log. It defaults to log.Printf

Functions

func InstallSwaggerService 

func InstallSwaggerService(aSwaggerConfig Config)

InstallSwaggerService add the WebService that provides the API documentation of all services conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).

func RegisterSwaggerService 

func RegisterSwaggerService(config Config, wsContainer *restful.Container)

RegisterSwaggerService add the WebService that provides the API documentation of all services conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).

Types

type Api 

type Api struct {
	Path        string      `json:"path"` // relative or absolute, must start with /
	Description string      `json:"description"`
	Operations  []Operation `json:"operations,omitempty"`
}

5.2.2 API Object

type ApiDeclaration 

type ApiDeclaration struct {
	SwaggerVersion string          `json:"swaggerVersion"`
	ApiVersion     string          `json:"apiVersion"`
	BasePath       string          `json:"basePath"`
	ResourcePath   string          `json:"resourcePath"` // must start with /
	Apis           []Api           `json:"apis,omitempty"`
	Models         ModelList       `json:"models,omitempty"`
	Produces       []string        `json:"produces,omitempty"`
	Consumes       []string        `json:"consumes,omitempty"`
	Authorizations []Authorization `json:"authorizations,omitempty"`
}

5.2 API Declaration

type ApiDeclarationList 

type ApiDeclarationList struct {
	List []ApiDeclaration
}

ApiDeclarationList maintains an ordered list of ApiDeclaration.

func (*ApiDeclarationList) At 

func (l *ApiDeclarationList) At(path string) (a ApiDeclaration, ok bool)

At returns the ApiDeclaration by its path unless absent, then ok is false

func (*ApiDeclarationList) Do 

func (l *ApiDeclarationList) Do(block func(path string, decl ApiDeclaration))

Do enumerates all the properties, each with its assigned name

func (ApiDeclarationList) MarshalJSON 

func (l ApiDeclarationList) MarshalJSON() ([]byte, error)

MarshalJSON writes the ModelPropertyList as if it was a map[string]ModelProperty

func (*ApiDeclarationList) Put 

func (l *ApiDeclarationList) Put(path string, a ApiDeclaration)

Put adds or replaces a ApiDeclaration with this name

type Authorization 

type Authorization struct {
	Type       string      `json:"type"`
	PassAs     string      `json:"passAs"`
	Keyname    string      `json:"keyname"`
	Scopes     []Scope     `json:"scopes"`
	GrantTypes []GrantType `json:"grandTypes"`
}

5.1.5

type AuthorizationCode 

type AuthorizationCode struct {
	TokenRequestEndpoint TokenRequestEndpoint `json:"tokenRequestEndpoint"`
	TokenEndpoint        TokenEndpoint        `json:"tokenEndpoint"`
}

5.1.9 Authorization Code Object

type Authorizations 

type Authorizations map[string]Authorization

5.2.10

type Config 

type Config struct {
	// url where the services are available, e.g. http://localhost:8080
	// if left empty then the basePath of Swagger is taken from the actual request
	WebServicesUrl string
	// path where the JSON api is avaiable , e.g. /apidocs
	ApiPath string
	// [optional] path where the swagger UI will be served, e.g. /swagger
	SwaggerPath string
	// [optional] location of folder containing Swagger HTML5 application index.html
	SwaggerFilePath string
	// api listing is constructed from this list of restful WebServices.
	WebServices []*restful.WebService
	// will serve all static content (scripts,pages,images)
	StaticHandler http.Handler
	// [optional] on default CORS (Cross-Origin-Resource-Sharing) is enabled.
	DisableCORS bool
	// Top-level API version. Is reflected in the resource listing.
	ApiVersion string
	// If set then call this handler after building the complete ApiDeclaration Map
	PostBuildHandler PostBuildDeclarationMapFunc
	// Swagger global info struct
	Info Info
}

type DataTypeFields 

type DataTypeFields struct {
	Type         *string  `json:"type,omitempty"` // if Ref not used
	Ref          *string  `json:"$ref,omitempty"` // if Type not used
	Format       string   `json:"format,omitempty"`
	DefaultValue Special  `json:"defaultValue,omitempty"`
	Enum         []string `json:"enum,omitempty"`
	Minimum      string   `json:"minimum,omitempty"`
	Maximum      string   `json:"maximum,omitempty"`
	Items        *Item    `json:"items,omitempty"`
	UniqueItems  *bool    `json:"uniqueItems,omitempty"`
}

4.3.3 Data Type Fields

type GrantType 

type GrantType struct {
	Implicit          Implicit          `json:"implicit"`
	AuthorizationCode AuthorizationCode `json:"authorization_code"`
}

5.1.7

type Implicit 

type Implicit struct {

	// An optional alternative name to standard "access_token" OAuth2 parameter.
	TokenName string `json:"tokenName"`
	// contains filtered or unexported fields
}

5.1.8 Implicit Object

type Info 

type Info struct {
	Title             string `json:"title"`
	Description       string `json:"description"`
	TermsOfServiceUrl string `json:"termsOfServiceUrl,omitempty"`
	Contact           string `json:"contact,omitempty"`
	License           string `json:"license,omitempty"`
	LicenseUrl        string `json:"licenseUrl,omitempty"`
}

5.1.3 Info Object

type Item 

type Item struct {
	Type   *string `json:"type,omitempty"`
	Ref    *string `json:"$ref,omitempty"`
	Format string  `json:"format,omitempty"`
}

4.3.4 Items Object

type LoginEndpoint 

type LoginEndpoint struct {
	// Required. The URL of the authorization endpoint for the implicit grant flow. The value SHOULD be in a URL format.
	Url string `json:"url"`
}

5.1.10 Login Endpoint Object

type Model 

type Model struct {
	Id            string            `json:"id"`
	Description   string            `json:"description,omitempty"`
	Required      []string          `json:"required,omitempty"`
	Properties    ModelPropertyList `json:"properties"`
	SubTypes      []string          `json:"subTypes,omitempty"`
	Discriminator string            `json:"discriminator,omitempty"`
}

5.2.6, 5.2.7 Models Object

type ModelBuildable 

type ModelBuildable interface {
	PostBuildModel(m *Model) *Model
}

ModelBuildable is used for extending Structs that need more control over how the Model appears in the Swagger api declaration.

type ModelList 

type ModelList struct {
	List []NamedModel
}

ModelList encapsulates a list of NamedModel (association)

func (*ModelList) At 

func (l *ModelList) At(name string) (m Model, ok bool)

At returns a Model by its name, ok is false if absent

func (*ModelList) Do 

func (l *ModelList) Do(block func(name string, value Model))

Do enumerates all the models, each with its assigned name

func (ModelList) MarshalJSON 

func (l ModelList) MarshalJSON() ([]byte, error)

MarshalJSON writes the ModelList as if it was a map[string]Model

func (*ModelList) Put 

func (l *ModelList) Put(name string, model Model)

Put adds or replaces a Model by its name

func (*ModelList) UnmarshalJSON 

func (l *ModelList) UnmarshalJSON(data []byte) error

UnmarshalJSON reads back a ModelList. This is an expensive operation.

type ModelProperty 

type ModelProperty struct {
	DataTypeFields
	Description string `json:"description,omitempty"`
}

5.2.8 Properties Object

type ModelPropertyList 

type ModelPropertyList struct {
	List []NamedModelProperty
}

ModelPropertyList encapsulates a list of NamedModelProperty (association)

func (*ModelPropertyList) At 

func (l *ModelPropertyList) At(name string) (p ModelProperty, ok bool)

At returns the ModelPropety by its name unless absent, then ok is false

func (*ModelPropertyList) Do 

func (l *ModelPropertyList) Do(block func(name string, value ModelProperty))

Do enumerates all the properties, each with its assigned name

func (ModelPropertyList) MarshalJSON 

func (l ModelPropertyList) MarshalJSON() ([]byte, error)

MarshalJSON writes the ModelPropertyList as if it was a map[string]ModelProperty

func (*ModelPropertyList) Put 

func (l *ModelPropertyList) Put(name string, prop ModelProperty)

Put adds or replaces a ModelProperty with this name

func (*ModelPropertyList) UnmarshalJSON 

func (l *ModelPropertyList) UnmarshalJSON(data []byte) error

UnmarshalJSON reads back a ModelPropertyList. This is an expensive operation.

type NamedModel 

type NamedModel struct {
	Name  string
	Model Model
}

NamedModel associates a name with a Model (not using its Id)

type NamedModelProperty 

type NamedModelProperty struct {
	Name     string
	Property ModelProperty
}

NamedModelProperty associates a name to a ModelProperty

type Operation 

type Operation struct {
	DataTypeFields
	Method           string            `json:"method"`
	Summary          string            `json:"summary,omitempty"`
	Notes            string            `json:"notes,omitempty"`
	Nickname         string            `json:"nickname"`
	Authorizations   []Authorization   `json:"authorizations,omitempty"`
	Parameters       []Parameter       `json:"parameters"`
	ResponseMessages []ResponseMessage `json:"responseMessages,omitempty"` // optional
	Produces         []string          `json:"produces,omitempty"`
	Consumes         []string          `json:"consumes,omitempty"`
	Deprecated       string            `json:"deprecated,omitempty"`
}

5.2.3 Operation Object

type Parameter 

type Parameter struct {
	DataTypeFields
	ParamType     string `json:"paramType"` // path,query,body,header,form
	Name          string `json:"name"`
	Description   string `json:"description"`
	Required      bool   `json:"required"`
	AllowMultiple bool   `json:"allowMultiple"`
}

5.2.4 Parameter Object

type PostBuildDeclarationMapFunc 

type PostBuildDeclarationMapFunc func(apiDeclarationMap *ApiDeclarationList)

PostBuildDeclarationMapFunc can be used to modify the api declaration map.

type Resource 

type Resource struct {
	Path        string `json:"path"` // relative or absolute, must start with /
	Description string `json:"description"`
}

5.1.2 Resource Object

type ResourceListing 

type ResourceListing struct {
	SwaggerVersion string          `json:"swaggerVersion"` // e.g 1.2
	Apis           []Resource      `json:"apis"`
	ApiVersion     string          `json:"apiVersion"`
	Info           Info            `json:"info"`
	Authorizations []Authorization `json:"authorizations,omitempty"`
}

5.1 Resource Listing

type ResponseMessage 

type ResponseMessage struct {
	Code          int    `json:"code"`
	Message       string `json:"message"`
	ResponseModel string `json:"responseModel,omitempty"`
}

5.2.5 Response Message Object

type Scope 

type Scope struct {
	// Required. The name of the scope.
	Scope string `json:"scope"`
	// Recommended. A short description of the scope.
	Description string `json:"description"`
}

5.1.6, 5.2.11

type Special 

type Special string

type SwaggerBuilder 

type SwaggerBuilder struct {
	SwaggerService
}

func NewSwaggerBuilder 

func NewSwaggerBuilder(config Config) *SwaggerBuilder

func (SwaggerBuilder) ProduceAllDeclarations 

func (sb SwaggerBuilder) ProduceAllDeclarations() map[string]ApiDeclaration

func (SwaggerBuilder) ProduceDeclarations 

func (sb SwaggerBuilder) ProduceDeclarations(route string) (*ApiDeclaration, bool)

func (SwaggerBuilder) ProduceListing 

func (sb SwaggerBuilder) ProduceListing() ResourceListing

type SwaggerService 

type SwaggerService struct {
	// contains filtered or unexported fields
}

type TokenEndpoint 

type TokenEndpoint struct {
	// Required. The URL of the token endpoint for the authentication code grant flow. The value SHOULD be in a URL format.
	Url string `json:"url"`
	// An optional alternative name to standard "access_token" OAuth2 parameter.
	TokenName string `json:"tokenName"`
}

5.1.12 Token Endpoint Object

type TokenRequestEndpoint 

type TokenRequestEndpoint struct {
	// Required. The URL of the authorization endpoint for the authentication code grant flow. The value SHOULD be in a URL format.
	Url string `json:"url"`
	// An optional alternative name to standard "client_id" OAuth2 parameter.
	ClientIdName string `json:"clientIdName"`
	// An optional alternative name to the standard "client_secret" OAuth2 parameter.
	ClientSecretName string `json:"clientSecretName"`
}

5.1.11 Token Request Endpoint Object

Source Files

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