genswagger

Documentation

Overview

Package genswagger provides a generator for the JSON swagger controller. The swagger controller responds to GET /swagger requests with the API JSON Hyper-swagger. This JSON swagger can be used to generate API documentation, ruby and Go API clients. See the blog post (https://blog.heroku.com/archives/2014/1/8/json_swagger_for_heroku_platform_api) describing how Heroku leverages the JSON Hyper-swagger standard (http://json-swagger.org/latest/json-swagger-hypermedia.html) for more information.

Index

• func Generate() (files []string, err error)
• type ExternalDocs
• type Generator
  • func (g *Generator) Cleanup()
  • func (g *Generator) Generate(api *design.APIDefinition) (_ []string, err error)
• type Header
• type Info
• type Items
• type Operation
• type Parameter
• type Path
• type Response
• type Scope
• type SecurityDefinition
• type Swagger
  • func New(api *design.APIDefinition) (*Swagger, error)
• type Tag

Functions

func Generate

func Generate() (files []string, err error)

Generate is the generator entry point called by the meta generator.

Types

type ExternalDocs

type ExternalDocs struct {
	// Description is a short description of the target documentation.
	// GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	// URL for the target documentation.
	URL string `json:"url"`
}

ExternalDocs allows referencing an external resource for extended documentation.

type Generator

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

Generator is the swagger code generator.

func (*Generator) Cleanup

func (g *Generator) Cleanup()

Cleanup removes all the files generated by this generator during the last invokation of Generate.

func (*Generator) Generate

func (g *Generator) Generate(api *design.APIDefinition) (_ []string, err error)

Generate produces the skeleton main.

type Header

type Header struct {
	// Description is`a brief description of the parameter.
	// GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	//  Type of the header. it is limited to simple types (that is, not an object).
	Type string `json:"type,omitempty"`
	// Format is the extending format for the previously mentioned type.
	Format string `json:"format,omitempty"`
	// Items describes the type of items in the array if type is "array".
	Items *Items `json:"items,omitempty"`
	// CollectionFormat determines the format of the array if type array is used.
	// Possible values are csv, ssv, tsv, pipes and multi.
	CollectionFormat string `json:"collectionFormat,omitempty"`
	// Default declares the value of the parameter that the server will use if none is
	// provided, for example a "count" to control the number of results per page might
	// default to 100 if not supplied by the client in the request.
	Default          interface{}   `json:"default,omitempty"`
	Maximum          float64       `json:"maximum,omitempty"`
	ExclusiveMaximum bool          `json:"exclusiveMaximum,omitempty"`
	Minimum          float64       `json:"minimum,omitempty"`
	ExclusiveMinimum bool          `json:"exclusiveMinimum,omitempty"`
	MaxLength        int           `json:"maxLength,omitempty"`
	MinLength        int           `json:"minLength,omitempty"`
	Pattern          string        `json:"pattern,omitempty"`
	MaxItems         int           `json:"maxItems,omitempty"`
	MinItems         int           `json:"minItems,omitempty"`
	UniqueItems      bool          `json:"uniqueItems,omitempty"`
	Enum             []interface{} `json:"enum,omitempty"`
	MultipleOf       float64       `json:"multipleOf,omitempty"`
}

Header represents a header parameter.

type Info

type Info struct {
	Title          string                    `json:"title,omitempty"`
	Description    string                    `json:"description,omitempty"`
	TermsOfService string                    `json:"termsOfService,omitempty"`
	Contact        *design.ContactDefinition `json:"contact,omitempty"`
	License        *design.LicenseDefinition `json:"license,omitempty"`
	Version        string                    `json:"version"`
}

Info provides metadata about the API. The metadata can be used by the clients if needed, and can be presented in the Swagger-UI for convenience.

type Items

type Items struct {
	//  Type of the items. it is limited to simple types (that is, not an object).
	Type string `json:"type,omitempty"`
	// Format is the extending format for the previously mentioned type.
	Format string `json:"format,omitempty"`
	// Items describes the type of items in the array if type is "array".
	Items *Items `json:"items,omitempty"`
	// CollectionFormat determines the format of the array if type array is used.
	// Possible values are csv, ssv, tsv, pipes and multi.
	CollectionFormat string `json:"collectionFormat,omitempty"`
	// Default declares the value of the parameter that the server will use if none is
	// provided, for example a "count" to control the number of results per page might
	// default to 100 if not supplied by the client in the request.
	Default          interface{}   `json:"default,omitempty"`
	Maximum          float64       `json:"maximum,omitempty"`
	ExclusiveMaximum bool          `json:"exclusiveMaximum,omitempty"`
	Minimum          float64       `json:"minimum,omitempty"`
	ExclusiveMinimum bool          `json:"exclusiveMinimum,omitempty"`
	MaxLength        int           `json:"maxLength,omitempty"`
	MinLength        int           `json:"minLength,omitempty"`
	Pattern          string        `json:"pattern,omitempty"`
	MaxItems         int           `json:"maxItems,omitempty"`
	MinItems         int           `json:"minItems,omitempty"`
	UniqueItems      bool          `json:"uniqueItems,omitempty"`
	Enum             []interface{} `json:"enum,omitempty"`
	MultipleOf       float64       `json:"multipleOf,omitempty"`
}

Items is a limited subset of JSON-Schema's items object. It is used by parameter definitions that are not located in "body".

type Operation

type Operation struct {
	// Tags is a list of tags for API documentation control. Tags can be used for
	// logical grouping of operations by resources or any other qualifier.
	Tags []string `json:"tags,omitempty"`
	// Summary is a short summary of what the operation does. For maximum readability
	// in the swagger-ui, this field should be less than 120 characters.
	Summary string `json:"summary,omitempty"`
	// Description is a verbose explanation of the operation behavior.
	// GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	// ExternalDocs points to additional external documentation for this operation.
	ExternalDocs *ExternalDocs `json:"externalDocs,omitempty"`
	// OperationID is a unique string used to identify the operation.
	OperationID string `json:"operationId,omitempty"`
	// Consumes is a list of MIME types the operation can consume.
	Consumes []string `json:"consumes,omitempty"`
	// Produces is a list of MIME types the operation can produce.
	Produces []string `json:"produces,omitempty"`
	// Parameters is a list of parameters that are applicable for this operation.
	Parameters []*Parameter `json:"parameters,omitempty"`
	// Responses is the list of possible responses as they are returned from executing
	// this operation.
	Responses map[string]*Response `json:"responses,omitempty"`
	// Schemes is the transfer protocol for the operation.
	Schemes []string `json:"schemes,omitempty"`
	// Deprecated declares this operation to be deprecated.
	Deprecated bool `json:"deprecated,omitempty"`
	// Secury is a declaration of which security schemes are applied for this operation.
	Security []map[string][]string `json:"security,omitempty"`
}

Operation describes a single API operation on a path.

type Parameter

type Parameter struct {
	// Name of the parameter. Parameter names are case sensitive.
	Name string `json:"name"`
	// In is the location of the parameter.
	// Possible values are "query", "header", "path", "formData" or "body".
	In string `json:"in"`
	// Description is`a brief description of the parameter.
	// GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	// Required determines whether this parameter is mandatory.
	Required bool `json:"required"`
	// Schema defining the type used for the body parameter, only if "in" is body
	Schema *genschema.JSONSchema `json:"schema,omitempty"`

	//  Type of the parameter. Since the parameter is not located at the request body,
	// it is limited to simple types (that is, not an object).
	Type string `json:"type,omitempty"`
	// Format is the extending format for the previously mentioned type.
	Format string `json:"format,omitempty"`
	// AllowEmptyValue sets the ability to pass empty-valued parameters.
	// This is valid only for either query or formData parameters and allows you to
	// send a parameter with a name only or an empty value. Default value is false.
	AllowEmptyValue bool `json:"allowEmptyValue,omitempty"`
	// Items describes the type of items in the array if type is "array".
	Items *Items `json:"items,omitempty"`
	// CollectionFormat determines the format of the array if type array is used.
	// Possible values are csv, ssv, tsv, pipes and multi.
	CollectionFormat string `json:"collectionFormat,omitempty"`
	// Default declares the value of the parameter that the server will use if none is
	// provided, for example a "count" to control the number of results per page might
	// default to 100 if not supplied by the client in the request.
	Default          interface{}   `json:"default,omitempty"`
	Maximum          float64       `json:"maximum,omitempty"`
	ExclusiveMaximum bool          `json:"exclusiveMaximum,omitempty"`
	Minimum          float64       `json:"minimum,omitempty"`
	ExclusiveMinimum bool          `json:"exclusiveMinimum,omitempty"`
	MaxLength        int           `json:"maxLength,omitempty"`
	MinLength        int           `json:"minLength,omitempty"`
	Pattern          string        `json:"pattern,omitempty"`
	MaxItems         int           `json:"maxItems,omitempty"`
	MinItems         int           `json:"minItems,omitempty"`
	UniqueItems      bool          `json:"uniqueItems,omitempty"`
	Enum             []interface{} `json:"enum,omitempty"`
	MultipleOf       float64       `json:"multipleOf,omitempty"`
}

Parameter describes a single operation parameter.

type Path

type Path struct {
	// Ref allows for an external definition of this path item.
	Ref string `json:"$ref,omitempty"`
	// Get defines a GET operation on this path.
	Get *Operation `json:"get,omitempty"`
	// Put defines a PUT operation on this path.
	Put *Operation `json:"put,omitempty"`
	// Post defines a POST operation on this path.
	Post *Operation `json:"post,omitempty"`
	// Delete defines a DELETE operation on this path.
	Delete *Operation `json:"delete,omitempty"`
	// Options defines a OPTIONS operation on this path.
	Options *Operation `json:"options,omitempty"`
	// Head defines a HEAD operation on this path.
	Head *Operation `json:"head,omitempty"`
	// Patch defines a PATCH operation on this path.
	Patch *Operation `json:"patch,omitempty"`
	// Parameters is the list of parameters that are applicable for all the operations
	// described under this path.
	Parameters []*Parameter `json:"parameters,omitempty"`
}

Path holds the relative paths to the individual endpoints.

type Response

type Response struct {
	// Description of the response. GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	// Schema is a definition of the response structure. It can be a primitive,
	// an array or an object. If this field does not exist, it means no content is
	// returned as part of the response. As an extension to the Schema Object, its root
	// type value may also be "file".
	Schema *genschema.JSONSchema `json:"schema,omitempty"`
	// Headers is a list of headers that are sent with the response.
	Headers map[string]*Header `json:"headers,omitempty"`
	// Ref references a global API response.
	// This field is exclusive with the other fields of Response.
	Ref string `json:"$ref,omitempty"`
}

Response describes an operation response.

type Scope

type Scope struct {
	// Description for scope
	Description string `json:"description,omitempty"`
}

Scope corresponds to an available scope for an OAuth2 security scheme.

type SecurityDefinition

type SecurityDefinition struct {
	// Type of the security scheme. Valid values are "basic", "apiKey" or "oauth2".
	Type string `json:"type"`
	// Description for security scheme
	Description string `json:"description,omitempty"`
	// Name of the header or query parameter to be used when type is "apiKey".
	Name string `json:"name,omitempty"`
	// In is the location of the API key when type is "apiKey".
	// Valid values are "query" or "header".
	In string `json:"in,omitempty"`
	// Flow is the flow used by the OAuth2 security scheme when type is "oauth2"
	// Valid values are "implicit", "password", "application" or "accessCode".
	Flow string `json:"flow,omitempty"`
	// The oauth2 authorization URL to be used for this flow.
	AuthorizationURL string `json:"authorizationUrl,omitempty"`
	// TokenURL  is the token URL to be used for this flow.
	TokenURL string `json:"tokenUrl,omitempty"`
	// Scopes list the  available scopes for the OAuth2 security scheme.
	Scopes map[string]string `json:"scopes,omitempty"`
}

SecurityDefinition allows the definition of a security scheme that can be used by the operations. Supported schemes are basic authentication, an API key (either as a header or as a query parameter) and OAuth2's common flows (implicit, password, application and access code).

type Swagger

type Swagger struct {
	Swagger             string                           `json:"swagger,omitempty"`
	Info                *Info                            `json:"info,omitempty"`
	Host                string                           `json:"host,omitempty"`
	BasePath            string                           `json:"basePath,omitempty"`
	Schemes             []string                         `json:"schemes,omitempty"`
	Consumes            []string                         `json:"consumes,omitempty"`
	Produces            []string                         `json:"produces,omitempty"`
	Paths               map[string]*Path                 `json:"paths"`
	Definitions         map[string]*genschema.JSONSchema `json:"definitions,omitempty"`
	Parameters          map[string]*Parameter            `json:"parameters,omitempty"`
	Responses           map[string]*Response             `json:"responses,omitempty"`
	SecurityDefinitions map[string]*SecurityDefinition   `json:"securityDefinitions,omitempty"`
	Tags                []*Tag                           `json:"tags,omitempty"`
	ExternalDocs        *ExternalDocs                    `json:"externalDocs,omitempty"`
}

Swagger represents an instance of a swagger object. See https://swagger.io/specification/

func New

func New(api *design.APIDefinition) (*Swagger, error)

New creates a Swagger spec from an API definition.

type Tag

type Tag struct {
	// Name of the tag.
	Name string `json:"name,omitempty"`
	// Description is a short description of the tag.
	// GFM syntax can be used for rich text representation.
	Description string `json:"description,omitempty"`
	// ExternalDocs is additional external documentation for this tag.
	ExternalDocs *ExternalDocs `json:"externalDocs,omitempty"`
}

Tag allows adding meta data to a single tag that is used by the Operation Object. It is not mandatory to have a Tag Object per tag used there.