forked from ebhomengo/niki
2020 lines
34 KiB
Go
2020 lines
34 KiB
Go
package swag
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import (
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"encoding/json"
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"fmt"
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"go/ast"
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goparser "go/parser"
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"go/token"
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"net/http"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"github.com/go-openapi/spec"
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"golang.org/x/tools/go/loader"
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)
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// RouteProperties describes HTTP properties of a single router comment.
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type RouteProperties struct {
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HTTPMethod string
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Path string
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Deprecated bool
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}
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// Operation describes a single API operation on a path.
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// For more information: https://github.com/swaggo/swag#api-operation
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type Operation struct {
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parser *Parser
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codeExampleFilesDir string
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spec.Operation
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RouterProperties []RouteProperties
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State string
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}
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var mimeTypeAliases = map[string]string{
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"json": "application/json",
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"xml": "text/xml",
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"plain": "text/plain",
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"html": "text/html",
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"mpfd": "multipart/form-data",
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"x-www-form-urlencoded": "application/x-www-form-urlencoded",
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"json-api": "application/vnd.api+json",
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"json-stream": "application/x-json-stream",
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"octet-stream": "application/octet-stream",
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"png": "image/png",
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"jpeg": "image/jpeg",
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"gif": "image/gif",
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}
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var mimeTypePattern = regexp.MustCompile("^[^/]+/[^/]+$")
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// NewOperation creates a new Operation with default properties.
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// map[int]Response.
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func NewOperation(parser *Parser, options ...func(*Operation)) *Operation {
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if parser == nil {
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parser = New()
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}
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result := &Operation{
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parser: parser,
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RouterProperties: []RouteProperties{},
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Operation: spec.Operation{
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OperationProps: spec.OperationProps{
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ID: "",
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Description: "",
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Summary: "",
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Security: nil,
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ExternalDocs: nil,
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Deprecated: false,
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Tags: []string{},
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Consumes: []string{},
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Produces: []string{},
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Schemes: []string{},
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Parameters: []spec.Parameter{},
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Responses: &spec.Responses{
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VendorExtensible: spec.VendorExtensible{
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Extensions: spec.Extensions{},
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},
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ResponsesProps: spec.ResponsesProps{
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Default: nil,
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StatusCodeResponses: make(map[int]spec.Response),
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},
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},
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},
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VendorExtensible: spec.VendorExtensible{
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Extensions: spec.Extensions{},
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},
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},
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codeExampleFilesDir: "",
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}
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for _, option := range options {
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option(result)
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}
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return result
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}
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// SetCodeExampleFilesDirectory sets the directory to search for codeExamples.
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func SetCodeExampleFilesDirectory(directoryPath string) func(*Operation) {
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return func(o *Operation) {
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o.codeExampleFilesDir = directoryPath
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}
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}
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// ParseComment parses comment for given comment string and returns error if error occurs.
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func (operation *Operation) ParseComment(comment string, astFile *ast.File) error {
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commentLine := strings.TrimSpace(strings.TrimLeft(comment, "/"))
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if len(commentLine) == 0 {
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return nil
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}
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fields := FieldsByAnySpace(commentLine, 2)
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attribute := fields[0]
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lowerAttribute := strings.ToLower(attribute)
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var lineRemainder string
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if len(fields) > 1 {
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lineRemainder = fields[1]
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}
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switch lowerAttribute {
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case stateAttr:
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operation.ParseStateComment(lineRemainder)
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case descriptionAttr:
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operation.ParseDescriptionComment(lineRemainder)
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case descriptionMarkdownAttr:
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commentInfo, err := getMarkdownForTag(lineRemainder, operation.parser.markdownFileDir)
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if err != nil {
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return err
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}
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operation.ParseDescriptionComment(string(commentInfo))
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case summaryAttr:
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operation.Summary = lineRemainder
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case idAttr:
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operation.ID = lineRemainder
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case tagsAttr:
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operation.ParseTagsComment(lineRemainder)
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case acceptAttr:
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return operation.ParseAcceptComment(lineRemainder)
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case produceAttr:
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return operation.ParseProduceComment(lineRemainder)
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case paramAttr:
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return operation.ParseParamComment(lineRemainder, astFile)
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case successAttr, failureAttr, responseAttr:
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return operation.ParseResponseComment(lineRemainder, astFile)
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case headerAttr:
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return operation.ParseResponseHeaderComment(lineRemainder, astFile)
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case routerAttr:
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return operation.ParseRouterComment(lineRemainder, false)
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case deprecatedRouterAttr:
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return operation.ParseRouterComment(lineRemainder, true)
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case securityAttr:
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return operation.ParseSecurityComment(lineRemainder)
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case deprecatedAttr:
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operation.Deprecate()
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case xCodeSamplesAttr:
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return operation.ParseCodeSample(attribute, commentLine, lineRemainder)
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default:
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return operation.ParseMetadata(attribute, lowerAttribute, lineRemainder)
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}
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return nil
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}
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// ParseCodeSample parse code sample.
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func (operation *Operation) ParseCodeSample(attribute, _, lineRemainder string) error {
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if lineRemainder == "file" {
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data, err := getCodeExampleForSummary(operation.Summary, operation.codeExampleFilesDir)
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if err != nil {
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return err
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}
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var valueJSON interface{}
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err = json.Unmarshal(data, &valueJSON)
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if err != nil {
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return fmt.Errorf("annotation %s need a valid json value", attribute)
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}
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// don't use the method provided by spec lib, because it will call toLower() on attribute names, which is wrongly
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operation.Extensions[attribute[1:]] = valueJSON
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return nil
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}
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// Fallback into existing logic
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return operation.ParseMetadata(attribute, strings.ToLower(attribute), lineRemainder)
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}
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// ParseStateComment parse state comment.
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func (operation *Operation) ParseStateComment(lineRemainder string) {
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operation.State = lineRemainder
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}
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// ParseDescriptionComment parse description comment.
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func (operation *Operation) ParseDescriptionComment(lineRemainder string) {
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if operation.Description == "" {
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operation.Description = lineRemainder
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return
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}
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operation.Description += "\n" + lineRemainder
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}
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// ParseMetadata parse metadata.
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func (operation *Operation) ParseMetadata(attribute, lowerAttribute, lineRemainder string) error {
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// parsing specific meta data extensions
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if strings.HasPrefix(lowerAttribute, "@x-") {
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if len(lineRemainder) == 0 {
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return fmt.Errorf("annotation %s need a value", attribute)
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}
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var valueJSON interface{}
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err := json.Unmarshal([]byte(lineRemainder), &valueJSON)
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if err != nil {
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return fmt.Errorf("annotation %s need a valid json value", attribute)
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}
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// don't use the method provided by spec lib, because it will call toLower() on attribute names, which is wrongly
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operation.Extensions[attribute[1:]] = valueJSON
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}
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return nil
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}
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var paramPattern = regexp.MustCompile(`(\S+)\s+(\w+)\s+([\S. ]+?)\s+(\w+)\s+"([^"]+)"`)
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func findInSlice(arr []string, target string) bool {
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for _, str := range arr {
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if str == target {
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return true
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}
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}
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return false
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}
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// ParseParamComment parses params return []string of param properties
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// E.g. @Param queryText formData string true "The email for login"
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//
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// [param name] [paramType] [data type] [is mandatory?] [Comment]
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//
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// E.g. @Param some_id path int true "Some ID".
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func (operation *Operation) ParseParamComment(commentLine string, astFile *ast.File) error {
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matches := paramPattern.FindStringSubmatch(commentLine)
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if len(matches) != 6 {
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return fmt.Errorf("missing required param comment parameters \"%s\"", commentLine)
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}
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name := matches[1]
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paramType := matches[2]
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refType := TransToValidSchemeType(matches[3])
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// Detect refType
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objectType := OBJECT
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if strings.HasPrefix(refType, "[]") {
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objectType = ARRAY
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refType = strings.TrimPrefix(refType, "[]")
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refType = TransToValidSchemeType(refType)
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} else if IsPrimitiveType(refType) ||
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paramType == "formData" && refType == "file" {
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objectType = PRIMITIVE
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}
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var enums []interface{}
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if !IsPrimitiveType(refType) {
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schema, _ := operation.parser.getTypeSchema(refType, astFile, false)
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if schema != nil && len(schema.Type) == 1 && schema.Enum != nil {
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if objectType == OBJECT {
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objectType = PRIMITIVE
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}
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refType = TransToValidSchemeType(schema.Type[0])
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enums = schema.Enum
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}
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}
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requiredText := strings.ToLower(matches[4])
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required := requiredText == "true" || requiredText == requiredLabel
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description := matches[5]
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param := createParameter(paramType, description, name, objectType, refType, required, enums, operation.parser.collectionFormatInQuery)
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switch paramType {
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case "path", "header", "query", "formData":
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switch objectType {
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case ARRAY:
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if !IsPrimitiveType(refType) && !(refType == "file" && paramType == "formData") {
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return fmt.Errorf("%s is not supported array type for %s", refType, paramType)
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}
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case PRIMITIVE:
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break
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case OBJECT:
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schema, err := operation.parser.getTypeSchema(refType, astFile, false)
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if err != nil {
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return err
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}
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if len(schema.Properties) == 0 {
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return nil
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}
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items := schema.Properties.ToOrderedSchemaItems()
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for _, item := range items {
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name, prop := item.Name, &item.Schema
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if len(prop.Type) == 0 {
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prop = operation.parser.getUnderlyingSchema(prop)
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if len(prop.Type) == 0 {
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continue
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}
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}
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nameOverrideType := paramType
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// query also uses formData tags
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if paramType == "query" {
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nameOverrideType = "formData"
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}
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// load overridden type specific name from extensions if exists
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if nameVal, ok := item.Schema.Extensions[nameOverrideType]; ok {
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name = nameVal.(string)
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}
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switch {
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case prop.Type[0] == ARRAY:
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if prop.Items.Schema == nil {
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continue
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}
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itemSchema := prop.Items.Schema
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if len(itemSchema.Type) == 0 {
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itemSchema = operation.parser.getUnderlyingSchema(prop.Items.Schema)
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}
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if len(itemSchema.Type) == 0 {
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continue
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}
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if !IsSimplePrimitiveType(itemSchema.Type[0]) {
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continue
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}
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param = createParameter(paramType, prop.Description, name, prop.Type[0], itemSchema.Type[0], findInSlice(schema.Required, item.Name), itemSchema.Enum, operation.parser.collectionFormatInQuery)
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case IsSimplePrimitiveType(prop.Type[0]):
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param = createParameter(paramType, prop.Description, name, PRIMITIVE, prop.Type[0], findInSlice(schema.Required, item.Name), nil, operation.parser.collectionFormatInQuery)
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default:
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operation.parser.debug.Printf("skip field [%s] in %s is not supported type for %s", name, refType, paramType)
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continue
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}
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param.Nullable = prop.Nullable
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param.Format = prop.Format
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param.Default = prop.Default
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param.Example = prop.Example
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param.Extensions = prop.Extensions
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param.CommonValidations.Maximum = prop.Maximum
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param.CommonValidations.Minimum = prop.Minimum
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param.CommonValidations.ExclusiveMaximum = prop.ExclusiveMaximum
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param.CommonValidations.ExclusiveMinimum = prop.ExclusiveMinimum
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param.CommonValidations.MaxLength = prop.MaxLength
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param.CommonValidations.MinLength = prop.MinLength
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param.CommonValidations.Pattern = prop.Pattern
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param.CommonValidations.MaxItems = prop.MaxItems
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param.CommonValidations.MinItems = prop.MinItems
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param.CommonValidations.UniqueItems = prop.UniqueItems
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param.CommonValidations.MultipleOf = prop.MultipleOf
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param.CommonValidations.Enum = prop.Enum
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operation.Operation.Parameters = append(operation.Operation.Parameters, param)
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}
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return nil
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}
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case "body":
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if objectType == PRIMITIVE {
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param.Schema = PrimitiveSchema(refType)
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} else {
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schema, err := operation.parseAPIObjectSchema(commentLine, objectType, refType, astFile)
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if err != nil {
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return err
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}
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param.Schema = schema
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}
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default:
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return fmt.Errorf("%s is not supported paramType", paramType)
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}
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err := operation.parseParamAttribute(commentLine, objectType, refType, paramType, ¶m)
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if err != nil {
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return err
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}
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operation.Operation.Parameters = append(operation.Operation.Parameters, param)
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return nil
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}
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const (
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formTag = "form"
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jsonTag = "json"
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uriTag = "uri"
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headerTag = "header"
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bindingTag = "binding"
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defaultTag = "default"
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enumsTag = "enums"
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exampleTag = "example"
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schemaExampleTag = "schemaExample"
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formatTag = "format"
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validateTag = "validate"
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minimumTag = "minimum"
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maximumTag = "maximum"
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minLengthTag = "minLength"
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maxLengthTag = "maxLength"
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multipleOfTag = "multipleOf"
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readOnlyTag = "readonly"
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extensionsTag = "extensions"
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collectionFormatTag = "collectionFormat"
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)
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var regexAttributes = map[string]*regexp.Regexp{
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// for Enums(A, B)
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enumsTag: regexp.MustCompile(`(?i)\s+enums\(.*\)`),
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// for maximum(0)
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maximumTag: regexp.MustCompile(`(?i)\s+maxinum|maximum\(.*\)`),
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// for minimum(0)
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minimumTag: regexp.MustCompile(`(?i)\s+mininum|minimum\(.*\)`),
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// for default(0)
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defaultTag: regexp.MustCompile(`(?i)\s+default\(.*\)`),
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|
|
// for minlength(0)
|
|
|
|
minLengthTag: regexp.MustCompile(`(?i)\s+minlength\(.*\)`),
|
|
|
|
// for maxlength(0)
|
|
|
|
maxLengthTag: regexp.MustCompile(`(?i)\s+maxlength\(.*\)`),
|
|
|
|
// for format(email)
|
|
|
|
formatTag: regexp.MustCompile(`(?i)\s+format\(.*\)`),
|
|
|
|
// for extensions(x-example=test)
|
|
|
|
extensionsTag: regexp.MustCompile(`(?i)\s+extensions\(.*\)`),
|
|
|
|
// for collectionFormat(csv)
|
|
|
|
collectionFormatTag: regexp.MustCompile(`(?i)\s+collectionFormat\(.*\)`),
|
|
|
|
// example(0)
|
|
|
|
exampleTag: regexp.MustCompile(`(?i)\s+example\(.*\)`),
|
|
|
|
// schemaExample(0)
|
|
|
|
schemaExampleTag: regexp.MustCompile(`(?i)\s+schemaExample\(.*\)`),
|
|
}
|
|
|
|
func (operation *Operation) parseParamAttribute(comment, objectType, schemaType, paramType string, param *spec.Parameter) error {
|
|
|
|
schemaType = TransToValidSchemeType(schemaType)
|
|
|
|
for attrKey, re := range regexAttributes {
|
|
|
|
attr, err := findAttr(re, comment)
|
|
|
|
if err != nil {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
switch attrKey {
|
|
|
|
case enumsTag:
|
|
|
|
err = setEnumParam(param, attr, objectType, schemaType, paramType)
|
|
|
|
case minimumTag, maximumTag:
|
|
|
|
err = setNumberParam(param, attrKey, schemaType, attr, comment)
|
|
|
|
case defaultTag:
|
|
|
|
err = setDefault(param, schemaType, attr)
|
|
|
|
case minLengthTag, maxLengthTag:
|
|
|
|
err = setStringParam(param, attrKey, schemaType, attr, comment)
|
|
|
|
case formatTag:
|
|
|
|
param.Format = attr
|
|
|
|
case exampleTag:
|
|
|
|
err = setExample(param, schemaType, attr)
|
|
|
|
case schemaExampleTag:
|
|
|
|
err = setSchemaExample(param, schemaType, attr)
|
|
|
|
case extensionsTag:
|
|
|
|
param.Extensions = setExtensionParam(attr)
|
|
|
|
case collectionFormatTag:
|
|
|
|
err = setCollectionFormatParam(param, attrKey, objectType, attr, comment)
|
|
|
|
}
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func findAttr(re *regexp.Regexp, commentLine string) (string, error) {
|
|
|
|
attr := re.FindString(commentLine)
|
|
|
|
l, r := strings.Index(attr, "("), strings.Index(attr, ")")
|
|
|
|
if l == -1 || r == -1 {
|
|
|
|
return "", fmt.Errorf("can not find regex=%s, comment=%s", re.String(), commentLine)
|
|
|
|
}
|
|
|
|
return strings.TrimSpace(attr[l+1 : r]), nil
|
|
|
|
}
|
|
|
|
func setStringParam(param *spec.Parameter, name, schemaType, attr, commentLine string) error {
|
|
|
|
if schemaType != STRING {
|
|
|
|
return fmt.Errorf("%s is attribute to set to a number. comment=%s got=%s", name, commentLine, schemaType)
|
|
|
|
}
|
|
|
|
n, err := strconv.ParseInt(attr, 10, 64)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("%s is allow only a number got=%s", name, attr)
|
|
|
|
}
|
|
|
|
switch name {
|
|
|
|
case minLengthTag:
|
|
|
|
param.MinLength = &n
|
|
|
|
case maxLengthTag:
|
|
|
|
param.MaxLength = &n
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func setNumberParam(param *spec.Parameter, name, schemaType, attr, commentLine string) error {
|
|
|
|
switch schemaType {
|
|
|
|
case INTEGER, NUMBER:
|
|
|
|
n, err := strconv.ParseFloat(attr, 64)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("maximum is allow only a number. comment=%s got=%s", commentLine, attr)
|
|
|
|
}
|
|
|
|
switch name {
|
|
|
|
case minimumTag:
|
|
|
|
param.Minimum = &n
|
|
|
|
case maximumTag:
|
|
|
|
param.Maximum = &n
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
default:
|
|
|
|
return fmt.Errorf("%s is attribute to set to a number. comment=%s got=%s", name, commentLine, schemaType)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
func setEnumParam(param *spec.Parameter, attr, objectType, schemaType, paramType string) error {
|
|
|
|
for _, e := range strings.Split(attr, ",") {
|
|
|
|
e = strings.TrimSpace(e)
|
|
|
|
value, err := defineType(schemaType, e)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
switch objectType {
|
|
|
|
case ARRAY:
|
|
|
|
param.Items.Enum = append(param.Items.Enum, value)
|
|
|
|
default:
|
|
|
|
switch paramType {
|
|
|
|
case "body":
|
|
|
|
param.Schema.Enum = append(param.Schema.Enum, value)
|
|
|
|
default:
|
|
|
|
param.Enum = append(param.Enum, value)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func setExtensionParam(attr string) spec.Extensions {
|
|
|
|
extensions := spec.Extensions{}
|
|
|
|
for _, val := range splitNotWrapped(attr, ',') {
|
|
|
|
parts := strings.SplitN(val, "=", 2)
|
|
|
|
if len(parts) == 2 {
|
|
|
|
extensions.Add(parts[0], parts[1])
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
if len(parts[0]) > 0 && string(parts[0][0]) == "!" {
|
|
|
|
extensions.Add(parts[0][1:], false)
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
extensions.Add(parts[0], true)
|
|
|
|
}
|
|
|
|
return extensions
|
|
|
|
}
|
|
|
|
func setCollectionFormatParam(param *spec.Parameter, name, schemaType, attr, commentLine string) error {
|
|
|
|
if schemaType == ARRAY {
|
|
|
|
param.CollectionFormat = TransToValidCollectionFormat(attr)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
return fmt.Errorf("%s is attribute to set to an array. comment=%s got=%s", name, commentLine, schemaType)
|
|
|
|
}
|
|
|
|
func setDefault(param *spec.Parameter, schemaType string, value string) error {
|
|
|
|
val, err := defineType(schemaType, value)
|
|
|
|
if err != nil {
|
|
|
|
return nil // Don't set a default value if it's not valid
|
|
|
|
}
|
|
|
|
param.Default = val
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func setSchemaExample(param *spec.Parameter, schemaType string, value string) error {
|
|
|
|
val, err := defineType(schemaType, value)
|
|
|
|
if err != nil {
|
|
|
|
return nil // Don't set a example value if it's not valid
|
|
|
|
}
|
|
|
|
// skip schema
|
|
|
|
if param.Schema == nil {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
switch v := val.(type) {
|
|
|
|
case string:
|
|
|
|
// replaces \r \n \t in example string values.
|
|
|
|
param.Schema.Example = strings.NewReplacer(`\r`, "\r", `\n`, "\n", `\t`, "\t").Replace(v)
|
|
|
|
default:
|
|
|
|
param.Schema.Example = val
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func setExample(param *spec.Parameter, schemaType string, value string) error {
|
|
|
|
val, err := defineType(schemaType, value)
|
|
|
|
if err != nil {
|
|
|
|
return nil // Don't set a example value if it's not valid
|
|
|
|
}
|
|
|
|
param.Example = val
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
// defineType enum value define the type (object and array unsupported).
|
|
|
|
func defineType(schemaType string, value string) (v interface{}, err error) {
|
|
|
|
schemaType = TransToValidSchemeType(schemaType)
|
|
|
|
switch schemaType {
|
|
|
|
case STRING:
|
|
|
|
return value, nil
|
|
|
|
case NUMBER:
|
|
|
|
v, err = strconv.ParseFloat(value, 64)
|
|
|
|
if err != nil {
|
|
|
|
return nil, fmt.Errorf("enum value %s can't convert to %s err: %s", value, schemaType, err)
|
|
|
|
}
|
|
|
|
case INTEGER:
|
|
|
|
v, err = strconv.Atoi(value)
|
|
|
|
if err != nil {
|
|
|
|
return nil, fmt.Errorf("enum value %s can't convert to %s err: %s", value, schemaType, err)
|
|
|
|
}
|
|
|
|
case BOOLEAN:
|
|
|
|
v, err = strconv.ParseBool(value)
|
|
|
|
if err != nil {
|
|
|
|
return nil, fmt.Errorf("enum value %s can't convert to %s err: %s", value, schemaType, err)
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
return nil, fmt.Errorf("%s is unsupported type in enum value %s", schemaType, value)
|
|
|
|
}
|
|
|
|
return v, nil
|
|
|
|
}
|
|
|
|
// ParseTagsComment parses comment for given `tag` comment string.
|
|
|
|
func (operation *Operation) ParseTagsComment(commentLine string) {
|
|
|
|
for _, tag := range strings.Split(commentLine, ",") {
|
|
|
|
operation.Tags = append(operation.Tags, strings.TrimSpace(tag))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// ParseAcceptComment parses comment for given `accept` comment string.
|
|
|
|
func (operation *Operation) ParseAcceptComment(commentLine string) error {
|
|
|
|
return parseMimeTypeList(commentLine, &operation.Consumes, "%v accept type can't be accepted")
|
|
|
|
}
|
|
|
|
// ParseProduceComment parses comment for given `produce` comment string.
|
|
|
|
func (operation *Operation) ParseProduceComment(commentLine string) error {
|
|
|
|
return parseMimeTypeList(commentLine, &operation.Produces, "%v produce type can't be accepted")
|
|
|
|
}
|
|
|
|
// parseMimeTypeList parses a list of MIME Types for a comment like
|
|
|
|
// `produce` (`Content-Type:` response header) or
|
|
|
|
// `accept` (`Accept:` request header).
|
|
|
|
func parseMimeTypeList(mimeTypeList string, typeList *[]string, format string) error {
|
|
|
|
for _, typeName := range strings.Split(mimeTypeList, ",") {
|
|
|
|
if mimeTypePattern.MatchString(typeName) {
|
|
|
|
*typeList = append(*typeList, typeName)
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
aliasMimeType, ok := mimeTypeAliases[typeName]
|
|
|
|
if !ok {
|
|
|
|
return fmt.Errorf(format, typeName)
|
|
|
|
}
|
|
|
|
*typeList = append(*typeList, aliasMimeType)
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
var routerPattern = regexp.MustCompile(`^(/[\w./\-{}+:$]*)[[:blank:]]+\[(\w+)]`)
|
|
|
|
// ParseRouterComment parses comment for given `router` comment string.
|
|
|
|
func (operation *Operation) ParseRouterComment(commentLine string, deprecated bool) error {
|
|
|
|
matches := routerPattern.FindStringSubmatch(commentLine)
|
|
|
|
if len(matches) != 3 {
|
|
|
|
return fmt.Errorf("can not parse router comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
signature := RouteProperties{
|
|
|
|
Path: matches[1],
|
|
|
|
HTTPMethod: strings.ToUpper(matches[2]),
|
|
|
|
Deprecated: deprecated,
|
|
}
|
|
|
|
if _, ok := allMethod[signature.HTTPMethod]; !ok {
|
|
|
|
return fmt.Errorf("invalid method: %s", signature.HTTPMethod)
|
|
|
|
}
|
|
|
|
operation.RouterProperties = append(operation.RouterProperties, signature)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
// ParseSecurityComment parses comment for given `security` comment string.
|
|
|
|
func (operation *Operation) ParseSecurityComment(commentLine string) error {
|
|
|
|
if len(commentLine) == 0 {
|
|
|
|
operation.Security = []map[string][]string{}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
var (
|
|
securityMap = make(map[string][]string)
|
|
|
|
securitySource = commentLine[strings.Index(commentLine, "@Security")+1:]
|
|
)
|
|
|
|
for _, securityOption := range strings.Split(securitySource, "||") {
|
|
|
|
securityOption = strings.TrimSpace(securityOption)
|
|
|
|
left, right := strings.Index(securityOption, "["), strings.Index(securityOption, "]")
|
|
|
|
if !(left == -1 && right == -1) {
|
|
|
|
scopes := securityOption[left+1 : right]
|
|
|
|
var options []string
|
|
|
|
for _, scope := range strings.Split(scopes, ",") {
|
|
|
|
options = append(options, strings.TrimSpace(scope))
|
|
|
|
}
|
|
|
|
securityKey := securityOption[0:left]
|
|
|
|
securityMap[securityKey] = append(securityMap[securityKey], options...)
|
|
|
|
} else {
|
|
|
|
securityKey := strings.TrimSpace(securityOption)
|
|
|
|
securityMap[securityKey] = []string{}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
operation.Security = append(operation.Security, securityMap)
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
// findTypeDef attempts to find the *ast.TypeSpec for a specific type given the
|
|
|
|
// type's name and the package's import path.
|
|
|
|
// TODO: improve finding external pkg.
|
|
|
|
func findTypeDef(importPath, typeName string) (*ast.TypeSpec, error) {
|
|
|
|
cwd, err := os.Getwd()
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
conf := loader.Config{
|
|
|
|
ParserMode: goparser.SpuriousErrors,
|
|
|
|
Cwd: cwd,
|
|
}
|
|
|
|
conf.Import(importPath)
|
|
|
|
lprog, err := conf.Load()
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
// If the pkg is vendored, the actual pkg path is going to resemble
|
|
|
|
// something like "{importPath}/vendor/{importPath}"
|
|
|
|
for k := range lprog.AllPackages {
|
|
|
|
realPkgPath := k.Path()
|
|
|
|
if strings.Contains(realPkgPath, "vendor/"+importPath) {
|
|
|
|
importPath = realPkgPath
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pkgInfo := lprog.Package(importPath)
|
|
|
|
if pkgInfo == nil {
|
|
|
|
return nil, fmt.Errorf("package was nil")
|
|
|
|
}
|
|
|
|
// TODO: possibly cache pkgInfo since it's an expensive operation
|
|
|
|
for i := range pkgInfo.Files {
|
|
|
|
for _, astDeclaration := range pkgInfo.Files[i].Decls {
|
|
|
|
generalDeclaration, ok := astDeclaration.(*ast.GenDecl)
|
|
|
|
if ok && generalDeclaration.Tok == token.TYPE {
|
|
|
|
for _, astSpec := range generalDeclaration.Specs {
|
|
|
|
typeSpec, ok := astSpec.(*ast.TypeSpec)
|
|
|
|
if ok {
|
|
|
|
if typeSpec.Name.String() == typeName {
|
|
|
|
return typeSpec, nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil, fmt.Errorf("type spec not found")
|
|
|
|
}
|
|
|
|
var responsePattern = regexp.MustCompile(`^([\w,]+)\s+([\w{}]+)\s+([\w\-.\\{}=,\[\s\]]+)\s*(".*)?`)
|
|
|
|
// ResponseType{data1=Type1,data2=Type2}.
|
|
|
|
var combinedPattern = regexp.MustCompile(`^([\w\-./\[\]]+){(.*)}$`)
|
|
|
|
func (operation *Operation) parseObjectSchema(refType string, astFile *ast.File) (*spec.Schema, error) {
|
|
|
|
return parseObjectSchema(operation.parser, refType, astFile)
|
|
|
|
}
|
|
|
|
func parseObjectSchema(parser *Parser, refType string, astFile *ast.File) (*spec.Schema, error) {
|
|
|
|
switch {
|
|
|
|
case refType == NIL:
|
|
|
|
return nil, nil
|
|
|
|
case refType == INTERFACE:
|
|
|
|
return PrimitiveSchema(OBJECT), nil
|
|
|
|
case refType == ANY:
|
|
|
|
return PrimitiveSchema(OBJECT), nil
|
|
|
|
case IsGolangPrimitiveType(refType):
|
|
|
|
refType = TransToValidSchemeType(refType)
|
|
|
|
return PrimitiveSchema(refType), nil
|
|
|
|
case IsPrimitiveType(refType):
|
|
|
|
return PrimitiveSchema(refType), nil
|
|
|
|
case strings.HasPrefix(refType, "[]"):
|
|
|
|
schema, err := parseObjectSchema(parser, refType[2:], astFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
return spec.ArrayProperty(schema), nil
|
|
|
|
case strings.HasPrefix(refType, "map["):
|
|
|
|
// ignore key type
|
|
|
|
idx := strings.Index(refType, "]")
|
|
|
|
if idx < 0 {
|
|
|
|
return nil, fmt.Errorf("invalid type: %s", refType)
|
|
|
|
}
|
|
|
|
refType = refType[idx+1:]
|
|
|
|
if refType == INTERFACE || refType == ANY {
|
|
|
|
return spec.MapProperty(nil), nil
|
|
|
|
}
|
|
|
|
schema, err := parseObjectSchema(parser, refType, astFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
return spec.MapProperty(schema), nil
|
|
|
|
case strings.Contains(refType, "{"):
|
|
|
|
return parseCombinedObjectSchema(parser, refType, astFile)
|
|
|
|
default:
|
|
|
|
if parser != nil { // checking refType has existing in 'TypeDefinitions'
|
|
|
|
schema, err := parser.getTypeSchema(refType, astFile, true)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
return schema, nil
|
|
|
|
}
|
|
|
|
return RefSchema(refType), nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
func parseFields(s string) []string {
|
|
|
|
nestLevel := 0
|
|
|
|
return strings.FieldsFunc(s, func(char rune) bool {
|
|
|
|
if char == '{' {
|
|
|
|
nestLevel++
|
|
|
|
return false
|
|
|
|
} else if char == '}' {
|
|
|
|
nestLevel--
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
return char == ',' && nestLevel == 0
|
|
|
|
})
|
|
|
|
}
|
|
|
|
func parseCombinedObjectSchema(parser *Parser, refType string, astFile *ast.File) (*spec.Schema, error) {
|
|
|
|
matches := combinedPattern.FindStringSubmatch(refType)
|
|
|
|
if len(matches) != 3 {
|
|
|
|
return nil, fmt.Errorf("invalid type: %s", refType)
|
|
|
|
}
|
|
|
|
schema, err := parseObjectSchema(parser, matches[1], astFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
fields, props := parseFields(matches[2]), map[string]spec.Schema{}
|
|
|
|
for _, field := range fields {
|
|
|
|
keyVal := strings.SplitN(field, "=", 2)
|
|
|
|
if len(keyVal) == 2 {
|
|
|
|
schema, err := parseObjectSchema(parser, keyVal[1], astFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if schema == nil {
|
|
|
|
schema = PrimitiveSchema(OBJECT)
|
|
|
|
}
|
|
|
|
props[keyVal[0]] = *schema
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if len(props) == 0 {
|
|
|
|
return schema, nil
|
|
|
|
}
|
|
|
|
if schema.Ref.GetURL() == nil && len(schema.Type) > 0 && schema.Type[0] == OBJECT && len(schema.Properties) == 0 && schema.AdditionalProperties == nil {
|
|
|
|
schema.Properties = props
|
|
|
|
return schema, nil
|
|
|
|
}
|
|
|
|
return spec.ComposedSchema(*schema, spec.Schema{
|
|
|
|
SchemaProps: spec.SchemaProps{
|
|
|
|
Type: []string{OBJECT},
|
|
|
|
Properties: props,
|
|
},
|
|
}), nil
|
|
|
|
}
|
|
|
|
func (operation *Operation) parseAPIObjectSchema(commentLine, schemaType, refType string, astFile *ast.File) (*spec.Schema, error) {
|
|
|
|
if strings.HasSuffix(refType, ",") && strings.Contains(refType, "[") {
|
|
|
|
// regexp may have broken generic syntax. find closing bracket and add it back
|
|
|
|
allMatchesLenOffset := strings.Index(commentLine, refType) + len(refType)
|
|
|
|
lostPartEndIdx := strings.Index(commentLine[allMatchesLenOffset:], "]")
|
|
|
|
if lostPartEndIdx >= 0 {
|
|
|
|
refType += commentLine[allMatchesLenOffset : allMatchesLenOffset+lostPartEndIdx+1]
|
|
|
|
}
|
|
|
|
}
|
|
|
|
switch schemaType {
|
|
|
|
case OBJECT:
|
|
|
|
if !strings.HasPrefix(refType, "[]") {
|
|
|
|
return operation.parseObjectSchema(refType, astFile)
|
|
|
|
}
|
|
|
|
refType = refType[2:]
|
|
|
|
fallthrough
|
|
|
|
case ARRAY:
|
|
|
|
schema, err := operation.parseObjectSchema(refType, astFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
return spec.ArrayProperty(schema), nil
|
|
|
|
default:
|
|
|
|
return PrimitiveSchema(schemaType), nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// ParseResponseComment parses comment for given `response` comment string.
|
|
|
|
func (operation *Operation) ParseResponseComment(commentLine string, astFile *ast.File) error {
|
|
|
|
matches := responsePattern.FindStringSubmatch(commentLine)
|
|
|
|
if len(matches) != 5 {
|
|
|
|
err := operation.ParseEmptyResponseComment(commentLine)
|
|
|
|
if err != nil {
|
|
|
|
return operation.ParseEmptyResponseOnly(commentLine)
|
|
|
|
}
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
description := strings.Trim(matches[4], "\"")
|
|
|
|
schema, err := operation.parseAPIObjectSchema(commentLine, strings.Trim(matches[2], "{}"), strings.TrimSpace(matches[3]), astFile)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
for _, codeStr := range strings.Split(matches[1], ",") {
|
|
|
|
if strings.EqualFold(codeStr, defaultTag) {
|
|
|
|
operation.DefaultResponse().WithSchema(schema).WithDescription(description)
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
code, err := strconv.Atoi(codeStr)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
resp := spec.NewResponse().WithSchema(schema).WithDescription(description)
|
|
|
|
if description == "" {
|
|
|
|
resp.WithDescription(http.StatusText(code))
|
|
|
|
}
|
|
|
|
operation.AddResponse(code, resp)
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func newHeaderSpec(schemaType, description string) spec.Header {
|
|
|
|
return spec.Header{
|
|
|
|
SimpleSchema: spec.SimpleSchema{
|
|
|
|
Type: schemaType,
|
|
},
|
|
|
|
HeaderProps: spec.HeaderProps{
|
|
|
|
Description: description,
|
|
},
|
|
|
|
VendorExtensible: spec.VendorExtensible{
|
|
|
|
Extensions: nil,
|
|
},
|
|
|
|
CommonValidations: spec.CommonValidations{
|
|
|
|
Maximum: nil,
|
|
|
|
ExclusiveMaximum: false,
|
|
|
|
Minimum: nil,
|
|
|
|
ExclusiveMinimum: false,
|
|
|
|
MaxLength: nil,
|
|
|
|
MinLength: nil,
|
|
|
|
Pattern: "",
|
|
|
|
MaxItems: nil,
|
|
|
|
MinItems: nil,
|
|
|
|
UniqueItems: false,
|
|
|
|
MultipleOf: nil,
|
|
|
|
Enum: nil,
|
|
},
|
|
}
|
|
|
|
}
|
|
|
|
// ParseResponseHeaderComment parses comment for given `response header` comment string.
|
|
|
|
func (operation *Operation) ParseResponseHeaderComment(commentLine string, _ *ast.File) error {
|
|
|
|
matches := responsePattern.FindStringSubmatch(commentLine)
|
|
|
|
if len(matches) != 5 {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
header := newHeaderSpec(strings.Trim(matches[2], "{}"), strings.Trim(matches[4], "\""))
|
|
|
|
headerKey := strings.TrimSpace(matches[3])
|
|
|
|
if strings.EqualFold(matches[1], "all") {
|
|
|
|
if operation.Responses.Default != nil {
|
|
|
|
operation.Responses.Default.Headers[headerKey] = header
|
|
|
|
}
|
|
|
|
if operation.Responses.StatusCodeResponses != nil {
|
|
|
|
for code, response := range operation.Responses.StatusCodeResponses {
|
|
|
|
response.Headers[headerKey] = header
|
|
|
|
operation.Responses.StatusCodeResponses[code] = response
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
for _, codeStr := range strings.Split(matches[1], ",") {
|
|
|
|
if strings.EqualFold(codeStr, defaultTag) {
|
|
|
|
if operation.Responses.Default != nil {
|
|
|
|
operation.Responses.Default.Headers[headerKey] = header
|
|
|
|
}
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
code, err := strconv.Atoi(codeStr)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
if operation.Responses.StatusCodeResponses != nil {
|
|
|
|
response, responseExist := operation.Responses.StatusCodeResponses[code]
|
|
|
|
if responseExist {
|
|
|
|
response.Headers[headerKey] = header
|
|
|
|
operation.Responses.StatusCodeResponses[code] = response
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
var emptyResponsePattern = regexp.MustCompile(`([\w,]+)\s+"(.*)"`)
|
|
|
|
// ParseEmptyResponseComment parse only comment out status code and description,eg: @Success 200 "it's ok".
|
|
|
|
func (operation *Operation) ParseEmptyResponseComment(commentLine string) error {
|
|
|
|
matches := emptyResponsePattern.FindStringSubmatch(commentLine)
|
|
|
|
if len(matches) != 3 {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
description := strings.Trim(matches[2], "\"")
|
|
|
|
for _, codeStr := range strings.Split(matches[1], ",") {
|
|
|
|
if strings.EqualFold(codeStr, defaultTag) {
|
|
|
|
operation.DefaultResponse().WithDescription(description)
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
code, err := strconv.Atoi(codeStr)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
operation.AddResponse(code, spec.NewResponse().WithDescription(description))
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
// ParseEmptyResponseOnly parse only comment out status code ,eg: @Success 200.
|
|
|
|
func (operation *Operation) ParseEmptyResponseOnly(commentLine string) error {
|
|
|
|
for _, codeStr := range strings.Split(commentLine, ",") {
|
|
|
|
if strings.EqualFold(codeStr, defaultTag) {
|
|
|
|
_ = operation.DefaultResponse()
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
code, err := strconv.Atoi(codeStr)
|
|
|
|
if err != nil {
|
|
|
|
return fmt.Errorf("can not parse response comment \"%s\"", commentLine)
|
|
|
|
}
|
|
|
|
operation.AddResponse(code, spec.NewResponse().WithDescription(http.StatusText(code)))
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
// DefaultResponse return the default response member pointer.
|
|
|
|
func (operation *Operation) DefaultResponse() *spec.Response {
|
|
|
|
if operation.Responses.Default == nil {
|
|
|
|
operation.Responses.Default = &spec.Response{
|
|
|
|
ResponseProps: spec.ResponseProps{
|
|
|
|
Description: "",
|
|
|
|
Headers: make(map[string]spec.Header),
|
|
},
|
|
}
|
|
|
|
}
|
|
|
|
return operation.Responses.Default
|
|
|
|
}
|
|
|
|
// AddResponse add a response for a code.
|
|
|
|
func (operation *Operation) AddResponse(code int, response *spec.Response) {
|
|
|
|
if response.Headers == nil {
|
|
|
|
response.Headers = make(map[string]spec.Header)
|
|
|
|
}
|
|
|
|
operation.Responses.StatusCodeResponses[code] = *response
|
|
|
|
}
|
|
|
|
// createParameter returns swagger spec.Parameter for given paramType, description, paramName, schemaType, required.
|
|
|
|
func createParameter(paramType, description, paramName, objectType, schemaType string, required bool, enums []interface{}, collectionFormat string) spec.Parameter {
|
|
|
|
// //five possible parameter types. query, path, body, header, form
|
|
|
|
result := spec.Parameter{
|
|
|
|
ParamProps: spec.ParamProps{
|
|
|
|
Name: paramName,
|
|
|
|
Description: description,
|
|
|
|
Required: required,
|
|
|
|
In: paramType,
|
|
},
|
|
}
|
|
|
|
if paramType == "body" {
|
|
|
|
return result
|
|
|
|
}
|
|
|
|
switch objectType {
|
|
|
|
case ARRAY:
|
|
|
|
result.Type = objectType
|
|
|
|
result.CollectionFormat = collectionFormat
|
|
|
|
result.Items = &spec.Items{
|
|
|
|
CommonValidations: spec.CommonValidations{
|
|
|
|
Enum: enums,
|
|
},
|
|
|
|
SimpleSchema: spec.SimpleSchema{
|
|
|
|
Type: schemaType,
|
|
},
|
|
}
|
|
|
|
case PRIMITIVE, OBJECT:
|
|
|
|
result.Type = schemaType
|
|
|
|
result.Enum = enums
|
|
|
|
}
|
|
|
|
return result
|
|
|
|
}
|
|
|
|
func getCodeExampleForSummary(summaryName string, dirPath string) ([]byte, error) {
|
|
|
|
dirEntries, err := os.ReadDir(dirPath)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
for _, entry := range dirEntries {
|
|
|
|
if entry.IsDir() {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
fileName := entry.Name()
|
|
|
|
if !strings.Contains(fileName, ".json") {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
if strings.Contains(fileName, summaryName) {
|
|
|
|
fullPath := filepath.Join(dirPath, fileName)
|
|
|
|
commentInfo, err := os.ReadFile(fullPath)
|
|
|
|
if err != nil {
|
|
|
|
return nil, fmt.Errorf("Failed to read code example file %s error: %s ", fullPath, err)
|
|
|
|
}
|
|
|
|
return commentInfo, nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil, fmt.Errorf("unable to find code example file for tag %s in the given directory", summaryName)
|
|
|
|
}
|