mirror of
https://github.com/ceph/ceph-csi.git
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193 lines
7.1 KiB
Go
193 lines
7.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package common
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import (
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"net/http"
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"strings"
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"github.com/emicklei/go-restful"
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"github.com/go-openapi/spec"
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)
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const (
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// TODO: Make this configurable.
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ExtensionPrefix = "x-kubernetes-"
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ExtensionV2Schema = ExtensionPrefix + "v2-schema"
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)
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// OpenAPIDefinition describes single type. Normally these definitions are auto-generated using gen-openapi.
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type OpenAPIDefinition struct {
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Schema spec.Schema
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Dependencies []string
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}
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type ReferenceCallback func(path string) spec.Ref
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// GetOpenAPIDefinitions is collection of all definitions.
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type GetOpenAPIDefinitions func(ReferenceCallback) map[string]OpenAPIDefinition
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// OpenAPIDefinitionGetter gets openAPI definitions for a given type. If a type implements this interface,
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// the definition returned by it will be used, otherwise the auto-generated definitions will be used. See
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// GetOpenAPITypeFormat for more information about trade-offs of using this interface or GetOpenAPITypeFormat method when
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// possible.
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type OpenAPIDefinitionGetter interface {
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OpenAPIDefinition() *OpenAPIDefinition
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}
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type OpenAPIV3DefinitionGetter interface {
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OpenAPIV3Definition() *OpenAPIDefinition
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}
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type PathHandler interface {
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Handle(path string, handler http.Handler)
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}
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// Config is set of configuration for openAPI spec generation.
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type Config struct {
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// List of supported protocols such as https, http, etc.
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ProtocolList []string
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// Info is general information about the API.
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Info *spec.Info
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// DefaultResponse will be used if an operation does not have any responses listed. It
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// will show up as ... "responses" : {"default" : $DefaultResponse} in the spec.
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DefaultResponse *spec.Response
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// ResponseDefinitions will be added to "responses" under the top-level swagger object. This is an object
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// that holds responses definitions that can be used across operations. This property does not define
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// global responses for all operations. For more info please refer:
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// https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#fixed-fields
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ResponseDefinitions map[string]spec.Response
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// CommonResponses will be added as a response to all operation specs. This is a good place to add common
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// responses such as authorization failed.
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CommonResponses map[int]spec.Response
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// List of webservice's path prefixes to ignore
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IgnorePrefixes []string
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// OpenAPIDefinitions should provide definition for all models used by routes. Failure to provide this map
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// or any of the models will result in spec generation failure.
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GetDefinitions GetOpenAPIDefinitions
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// GetOperationIDAndTags returns operation id and tags for a restful route. It is an optional function to customize operation IDs.
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GetOperationIDAndTags func(r *restful.Route) (string, []string, error)
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// GetDefinitionName returns a friendly name for a definition base on the serving path. parameter `name` is the full name of the definition.
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// It is an optional function to customize model names.
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GetDefinitionName func(name string) (string, spec.Extensions)
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// PostProcessSpec runs after the spec is ready to serve. It allows a final modification to the spec before serving.
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PostProcessSpec func(*spec.Swagger) (*spec.Swagger, error)
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// SecurityDefinitions is list of all security definitions for OpenAPI service. If this is not nil, the user of config
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// is responsible to provide DefaultSecurity and (maybe) add unauthorized response to CommonResponses.
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SecurityDefinitions *spec.SecurityDefinitions
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// DefaultSecurity for all operations. This will pass as spec.SwaggerProps.Security to OpenAPI.
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// For most cases, this will be list of acceptable definitions in SecurityDefinitions.
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DefaultSecurity []map[string][]string
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}
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var schemaTypeFormatMap = map[string][]string{
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"uint": {"integer", "int32"},
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"uint8": {"integer", "byte"},
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"uint16": {"integer", "int32"},
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"uint32": {"integer", "int64"},
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"uint64": {"integer", "int64"},
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"int": {"integer", "int32"},
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"int8": {"integer", "byte"},
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"int16": {"integer", "int32"},
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"int32": {"integer", "int32"},
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"int64": {"integer", "int64"},
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"byte": {"integer", "byte"},
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"float64": {"number", "double"},
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"float32": {"number", "float"},
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"bool": {"boolean", ""},
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"time.Time": {"string", "date-time"},
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"string": {"string", ""},
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"integer": {"integer", ""},
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"number": {"number", ""},
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"boolean": {"boolean", ""},
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"[]byte": {"string", "byte"}, // base64 encoded characters
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"interface{}": {"object", ""},
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}
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// This function is a reference for converting go (or any custom type) to a simple open API type,format pair. There are
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// two ways to customize spec for a type. If you add it here, a type will be converted to a simple type and the type
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// comment (the comment that is added before type definition) will be lost. The spec will still have the property
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// comment. The second way is to implement OpenAPIDefinitionGetter interface. That function can customize the spec (so
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// the spec does not need to be simple type,format) or can even return a simple type,format (e.g. IntOrString). For simple
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// type formats, the benefit of adding OpenAPIDefinitionGetter interface is to keep both type and property documentation.
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// Example:
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// type Sample struct {
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// ...
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// // port of the server
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// port IntOrString
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// ...
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// }
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// // IntOrString documentation...
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// type IntOrString { ... }
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//
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// Adding IntOrString to this function:
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// "port" : {
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// format: "string",
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// type: "int-or-string",
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// Description: "port of the server"
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// }
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//
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// Implement OpenAPIDefinitionGetter for IntOrString:
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//
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// "port" : {
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// $Ref: "#/definitions/IntOrString"
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// Description: "port of the server"
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// }
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// ...
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// definitions:
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// {
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// "IntOrString": {
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// format: "string",
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// type: "int-or-string",
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// Description: "IntOrString documentation..." // new
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// }
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// }
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//
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func GetOpenAPITypeFormat(typeName string) (string, string) {
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mapped, ok := schemaTypeFormatMap[typeName]
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if !ok {
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return "", ""
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}
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return mapped[0], mapped[1]
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}
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func EscapeJsonPointer(p string) string {
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// Escaping reference name using rfc6901
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p = strings.Replace(p, "~", "~0", -1)
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p = strings.Replace(p, "/", "~1", -1)
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return p
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}
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func EmbedOpenAPIDefinitionIntoV2Extension(main OpenAPIDefinition, embedded OpenAPIDefinition) OpenAPIDefinition {
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if main.Schema.Extensions == nil {
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main.Schema.Extensions = make(map[string]interface{})
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}
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main.Schema.Extensions[ExtensionV2Schema] = embedded.Schema
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return main
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}
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