gf/net/goai/goai_path.go
John Guo ee58255418
move common used tag from packages to package gtag for maintainability (#2256)
* move common used tag from packages to package gtag for maintainability

* move common used tag from packages to package gtag for maintainability

Co-authored-by: houseme <housemecn@gmail.com>
2022-11-07 17:51:37 +08:00

388 lines
12 KiB
Go

// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package goai
import (
"net/http"
"reflect"
"github.com/gogf/gf/v2/container/garray"
"github.com/gogf/gf/v2/errors/gcode"
"github.com/gogf/gf/v2/errors/gerror"
"github.com/gogf/gf/v2/internal/json"
"github.com/gogf/gf/v2/os/gstructs"
"github.com/gogf/gf/v2/text/gstr"
"github.com/gogf/gf/v2/util/gconv"
"github.com/gogf/gf/v2/util/gmeta"
"github.com/gogf/gf/v2/util/gtag"
)
type Path struct {
Ref string `json:"$ref,omitempty"`
Summary string `json:"summary,omitempty"`
Description string `json:"description,omitempty"`
Connect *Operation `json:"connect,omitempty"`
Delete *Operation `json:"delete,omitempty"`
Get *Operation `json:"get,omitempty"`
Head *Operation `json:"head,omitempty"`
Options *Operation `json:"options,omitempty"`
Patch *Operation `json:"patch,omitempty"`
Post *Operation `json:"post,omitempty"`
Put *Operation `json:"put,omitempty"`
Trace *Operation `json:"trace,omitempty"`
Servers Servers `json:"servers,omitempty"`
Parameters Parameters `json:"parameters,omitempty"`
XExtensions XExtensions `json:"-"`
}
// Paths are specified by OpenAPI/Swagger standard version 3.0.
type Paths map[string]Path
const (
responseOkKey = `200`
)
type addPathInput struct {
Path string // Precise route path.
Prefix string // Route path prefix.
Method string // Route method.
Function interface{} // Uniformed function.
}
func (oai *OpenApiV3) addPath(in addPathInput) error {
if oai.Paths == nil {
oai.Paths = map[string]Path{}
}
var (
reflectType = reflect.TypeOf(in.Function)
)
if reflectType.NumIn() != 2 || reflectType.NumOut() != 2 {
return gerror.NewCodef(
gcode.CodeInvalidParameter,
`unsupported function "%s" for OpenAPI Path register, there should be input & output structures`,
reflectType.String(),
)
}
var (
inputObject reflect.Value
outputObject reflect.Value
)
// Create instance according input/output types.
if reflectType.In(1).Kind() == reflect.Ptr {
inputObject = reflect.New(reflectType.In(1).Elem()).Elem()
} else {
inputObject = reflect.New(reflectType.In(1)).Elem()
}
if reflectType.Out(0).Kind() == reflect.Ptr {
outputObject = reflect.New(reflectType.Out(0).Elem()).Elem()
} else {
outputObject = reflect.New(reflectType.Out(0)).Elem()
}
var (
mime string
path = Path{XExtensions: make(XExtensions)}
inputMetaMap = gmeta.Data(inputObject.Interface())
outputMetaMap = gmeta.Data(outputObject.Interface())
isInputStructEmpty = oai.doesStructHasNoFields(inputObject.Interface())
inputStructTypeName = oai.golangTypeToSchemaName(inputObject.Type())
outputStructTypeName = oai.golangTypeToSchemaName(outputObject.Type())
operation = Operation{
Responses: map[string]ResponseRef{},
XExtensions: make(XExtensions),
}
)
// Path check.
if in.Path == "" {
in.Path = gmeta.Get(inputObject.Interface(), gtag.Path).String()
if in.Prefix != "" {
in.Path = gstr.TrimRight(in.Prefix, "/") + "/" + gstr.TrimLeft(in.Path, "/")
}
}
if in.Path == "" {
return gerror.NewCodef(
gcode.CodeMissingParameter,
`missing necessary path parameter "%s" for input struct "%s", missing tag in attribute Meta?`,
gtag.Path, inputStructTypeName,
)
}
if v, ok := oai.Paths[in.Path]; ok {
path = v
}
// Method check.
if in.Method == "" {
in.Method = gmeta.Get(inputObject.Interface(), gtag.Method).String()
}
if in.Method == "" {
return gerror.NewCodef(
gcode.CodeMissingParameter,
`missing necessary method parameter "%s" for input struct "%s", missing tag in attribute Meta?`,
gtag.Method, inputStructTypeName,
)
}
if err := oai.addSchema(inputObject.Interface(), outputObject.Interface()); err != nil {
return err
}
if len(inputMetaMap) > 0 {
if err := oai.tagMapToPath(inputMetaMap, &path); err != nil {
return err
}
if err := oai.tagMapToOperation(inputMetaMap, &operation); err != nil {
return err
}
// Allowed request mime.
if mime = inputMetaMap[gtag.Mime]; mime == "" {
mime = inputMetaMap[gtag.Consumes]
}
}
// =================================================================================================================
// Request Parameter.
// =================================================================================================================
structFields, _ := gstructs.Fields(gstructs.FieldsInput{
Pointer: inputObject.Interface(),
RecursiveOption: gstructs.RecursiveOptionEmbeddedNoTag,
})
for _, structField := range structFields {
if operation.Parameters == nil {
operation.Parameters = []ParameterRef{}
}
parameterRef, err := oai.newParameterRefWithStructMethod(structField, in.Path, in.Method)
if err != nil {
return err
}
if parameterRef != nil {
operation.Parameters = append(operation.Parameters, *parameterRef)
}
}
// =================================================================================================================
// Request Body.
// =================================================================================================================
if operation.RequestBody == nil {
operation.RequestBody = &RequestBodyRef{}
}
if operation.RequestBody.Value == nil {
var (
requestBody = RequestBody{
Required: true,
Content: map[string]MediaType{},
}
)
// Supported mime types of request.
var (
contentTypes = oai.Config.ReadContentTypes
tagMimeValue = gmeta.Get(inputObject.Interface(), gtag.Mime).String()
)
if tagMimeValue != "" {
contentTypes = gstr.SplitAndTrim(tagMimeValue, ",")
}
for _, v := range contentTypes {
if isInputStructEmpty {
requestBody.Content[v] = MediaType{}
} else {
schemaRef, err := oai.getRequestSchemaRef(getRequestSchemaRefInput{
BusinessStructName: inputStructTypeName,
RequestObject: oai.Config.CommonRequest,
RequestDataField: oai.Config.CommonRequestDataField,
})
if err != nil {
return err
}
requestBody.Content[v] = MediaType{
Schema: schemaRef,
}
}
}
operation.RequestBody = &RequestBodyRef{
Value: &requestBody,
}
}
// =================================================================================================================
// Response.
// =================================================================================================================
if _, ok := operation.Responses[responseOkKey]; !ok {
var (
response = Response{
Content: map[string]MediaType{},
XExtensions: make(XExtensions),
}
)
if len(outputMetaMap) > 0 {
if err := oai.tagMapToResponse(outputMetaMap, &response); err != nil {
return err
}
}
// Supported mime types of response.
var (
contentTypes = oai.Config.ReadContentTypes
tagMimeValue = gmeta.Get(outputObject.Interface(), gtag.Mime).String()
refInput = getResponseSchemaRefInput{
BusinessStructName: outputStructTypeName,
CommonResponseObject: oai.Config.CommonResponse,
CommonResponseDataField: oai.Config.CommonResponseDataField,
}
)
if tagMimeValue != "" {
contentTypes = gstr.SplitAndTrim(tagMimeValue, ",")
}
for _, v := range contentTypes {
// If customized response mime type, it then ignores common response feature.
if tagMimeValue != "" {
refInput.CommonResponseObject = nil
refInput.CommonResponseDataField = ""
}
schemaRef, err := oai.getResponseSchemaRef(refInput)
if err != nil {
return err
}
response.Content[v] = MediaType{
Schema: schemaRef,
}
}
operation.Responses[responseOkKey] = ResponseRef{Value: &response}
}
// Remove operation body duplicated properties.
oai.removeOperationDuplicatedProperties(operation)
// Assign to certain operation attribute.
switch gstr.ToUpper(in.Method) {
case http.MethodGet:
// GET operations cannot have a requestBody.
operation.RequestBody = nil
path.Get = &operation
case http.MethodPut:
path.Put = &operation
case http.MethodPost:
path.Post = &operation
case http.MethodDelete:
// DELETE operations cannot have a requestBody.
operation.RequestBody = nil
path.Delete = &operation
case http.MethodConnect:
// Nothing to do for Connect.
case http.MethodHead:
path.Head = &operation
case http.MethodOptions:
path.Options = &operation
case http.MethodPatch:
path.Patch = &operation
case http.MethodTrace:
path.Trace = &operation
default:
return gerror.NewCodef(gcode.CodeInvalidParameter, `invalid method "%s"`, in.Method)
}
oai.Paths[in.Path] = path
return nil
}
func (oai *OpenApiV3) removeOperationDuplicatedProperties(operation Operation) {
var (
duplicatedParameterNames []interface{}
dataField string
)
for _, parameter := range operation.Parameters {
duplicatedParameterNames = append(duplicatedParameterNames, parameter.Value.Name)
}
// Check operation request body have common request data field.
dataFields := gstr.Split(oai.Config.CommonRequestDataField, ".")
if len(dataFields) > 0 && dataFields[0] != "" {
dataField = dataFields[0]
}
for _, requestBodyContent := range operation.RequestBody.Value.Content {
// Check request body schema
if requestBodyContent.Schema == nil {
continue
}
// Check request body schema ref.
if schema := oai.Components.Schemas.Get(requestBodyContent.Schema.Ref); schema != nil {
schema.Value.Required = oai.removeItemsFromArray(schema.Value.Required, duplicatedParameterNames)
schema.Value.Properties.Removes(duplicatedParameterNames)
continue
}
// Check the Value public field for the request body.
if commonRequest := requestBodyContent.Schema.Value.Properties.Get(dataField); commonRequest != nil {
commonRequest.Value.Required = oai.removeItemsFromArray(commonRequest.Value.Required, duplicatedParameterNames)
commonRequest.Value.Properties.Removes(duplicatedParameterNames)
continue
}
// Check request body schema value.
if requestBodyContent.Schema.Value != nil {
requestBodyContent.Schema.Value.Required = oai.removeItemsFromArray(requestBodyContent.Schema.Value.Required, duplicatedParameterNames)
requestBodyContent.Schema.Value.Properties.Removes(duplicatedParameterNames)
continue
}
}
}
func (oai *OpenApiV3) removeItemsFromArray(array []string, items []interface{}) []string {
arr := garray.NewStrArrayFrom(array)
for _, item := range items {
if value, ok := item.(string); ok {
arr.RemoveValue(value)
}
}
return arr.Slice()
}
func (oai *OpenApiV3) doesStructHasNoFields(s interface{}) bool {
return reflect.TypeOf(s).NumField() == 0
}
func (oai *OpenApiV3) tagMapToPath(tagMap map[string]string, path *Path) error {
var mergedTagMap = oai.fillMapWithShortTags(tagMap)
if err := gconv.Struct(mergedTagMap, path); err != nil {
return gerror.Wrap(err, `mapping struct tags to Path failed`)
}
oai.tagMapToXExtensions(mergedTagMap, path.XExtensions)
return nil
}
func (p Path) MarshalJSON() ([]byte, error) {
var (
b []byte
m map[string]json.RawMessage
err error
)
type tempPath Path // To prevent JSON marshal recursion error.
if b, err = json.Marshal(tempPath(p)); err != nil {
return nil, err
}
if err = json.Unmarshal(b, &m); err != nil {
return nil, err
}
for k, v := range p.XExtensions {
if b, err = json.Marshal(v); err != nil {
return nil, err
}
m[k] = b
}
return json.Marshal(m)
}