// Copyright 2013 bee authors // // Licensed under the Apache License, Version 2.0 (the "License"): you may // not use this file except in compliance with the License. You may obtain // a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the // License for the specific language governing permissions and limitations // under the License. package swaggergen import ( "encoding/json" "errors" "fmt" "go/ast" "go/parser" "go/token" "os" "path" "path/filepath" "reflect" "regexp" "runtime" "sort" "strconv" "strings" "unicode" "gopkg.in/yaml.v2" "github.com/astaxie/beego/swagger" "github.com/astaxie/beego/utils" beeLogger "github.com/beego/bee/logger" bu "github.com/beego/bee/utils" ) const ( ajson = "application/json" axml = "application/xml" aplain = "text/plain" ahtml = "text/html" aform = "multipart/form-data" ) var pkgCache map[string]struct{} //pkg:controller:function:comments comments: key:value var controllerComments map[string]string var importlist map[string]string var controllerList map[string]map[string]*swagger.Item //controllername Paths items var modelsList map[string]map[string]swagger.Schema var rootapi swagger.Swagger var astPkgs []*ast.Package // refer to builtin.go var basicTypes = map[string]string{ "bool": "boolean:", "uint": "integer:int32", "uint8": "integer:int32", "uint16": "integer:int32", "uint32": "integer:int32", "uint64": "integer:int64", "int": "integer:int64", "int8": "integer:int32", "int16": "integer:int32", "int32": "integer:int32", "int64": "integer:int64", "uintptr": "integer:int64", "float32": "number:float", "float64": "number:double", "string": "string:", "complex64": "number:float", "complex128": "number:double", "byte": "string:byte", "rune": "string:byte", // builtin golang objects "time.Time": "string:string", } var stdlibObject = map[string]string{ "&{time Time}": "time.Time", } func init() { pkgCache = make(map[string]struct{}) controllerComments = make(map[string]string) importlist = make(map[string]string) controllerList = make(map[string]map[string]*swagger.Item) modelsList = make(map[string]map[string]swagger.Schema) astPkgs = make([]*ast.Package, 0) } // ParsePackagesFromDir parses packages from a given directory func ParsePackagesFromDir(dirpath string) { c := make(chan error) go func() { filepath.Walk(dirpath, func(fpath string, fileInfo os.FileInfo, err error) error { if err != nil { return nil } if !fileInfo.IsDir() { return nil } // skip folder if it's a 'vendor' folder within dirpath or its child, // all 'tests' folders and dot folders wihin dirpath d, _ := filepath.Rel(dirpath, fpath) if !(d == "vendor" || strings.HasPrefix(d, "vendor"+string(os.PathSeparator))) && !strings.Contains(fpath, "tests") && !(d[0] == '.') { err = parsePackageFromDir(fpath) if err != nil { // Send the error to through the channel and continue walking c <- fmt.Errorf("Error while parsing directory: %s", err.Error()) return nil } } return nil }) close(c) }() for err := range c { beeLogger.Log.Warnf("%s", err) } } func parsePackageFromDir(path string) error { fileSet := token.NewFileSet() folderPkgs, err := parser.ParseDir(fileSet, path, func(info os.FileInfo) bool { name := info.Name() return !info.IsDir() && !strings.HasPrefix(name, ".") && strings.HasSuffix(name, ".go") }, parser.ParseComments) if err != nil { return err } for _, v := range folderPkgs { astPkgs = append(astPkgs, v) } return nil } // GenerateDocs generates documentations for a given path. func GenerateDocs(curpath string) { fset := token.NewFileSet() f, err := parser.ParseFile(fset, filepath.Join(curpath, "routers", "router.go"), nil, parser.ParseComments) if err != nil { beeLogger.Log.Fatalf("Error while parsing router.go: %s", err) } rootapi.Infos = swagger.Information{} rootapi.SwaggerVersion = "2.0" // Analyse API comments if f.Comments != nil { for _, c := range f.Comments { for _, s := range strings.Split(c.Text(), "\n") { if strings.HasPrefix(s, "@APIVersion") { rootapi.Infos.Version = strings.TrimSpace(s[len("@APIVersion"):]) } else if strings.HasPrefix(s, "@Title") { rootapi.Infos.Title = strings.TrimSpace(s[len("@Title"):]) } else if strings.HasPrefix(s, "@Description") { rootapi.Infos.Description = strings.TrimSpace(s[len("@Description"):]) } else if strings.HasPrefix(s, "@TermsOfServiceUrl") { rootapi.Infos.TermsOfService = strings.TrimSpace(s[len("@TermsOfServiceUrl"):]) } else if strings.HasPrefix(s, "@Contact") { rootapi.Infos.Contact.EMail = strings.TrimSpace(s[len("@Contact"):]) } else if strings.HasPrefix(s, "@Name") { rootapi.Infos.Contact.Name = strings.TrimSpace(s[len("@Name"):]) } else if strings.HasPrefix(s, "@URL") { rootapi.Infos.Contact.URL = strings.TrimSpace(s[len("@URL"):]) } else if strings.HasPrefix(s, "@LicenseUrl") { if rootapi.Infos.License == nil { rootapi.Infos.License = &swagger.License{URL: strings.TrimSpace(s[len("@LicenseUrl"):])} } else { rootapi.Infos.License.URL = strings.TrimSpace(s[len("@LicenseUrl"):]) } } else if strings.HasPrefix(s, "@License") { if rootapi.Infos.License == nil { rootapi.Infos.License = &swagger.License{Name: strings.TrimSpace(s[len("@License"):])} } else { rootapi.Infos.License.Name = strings.TrimSpace(s[len("@License"):]) } } else if strings.HasPrefix(s, "@Schemes") { rootapi.Schemes = strings.Split(strings.TrimSpace(s[len("@Schemes"):]), ",") } else if strings.HasPrefix(s, "@Host") { rootapi.Host = strings.TrimSpace(s[len("@Host"):]) } else if strings.HasPrefix(s, "@SecurityDefinition") { if len(rootapi.SecurityDefinitions) == 0 { rootapi.SecurityDefinitions = make(map[string]swagger.Security) } var out swagger.Security p := getparams(strings.TrimSpace(s[len("@SecurityDefinition"):])) if len(p) < 2 { beeLogger.Log.Fatalf("Not enough params for security: %d\n", len(p)) } out.Type = p[1] switch out.Type { case "oauth2": if len(p) < 6 { beeLogger.Log.Fatalf("Not enough params for oauth2: %d\n", len(p)) } if !(p[3] == "implicit" || p[3] == "password" || p[3] == "application" || p[3] == "accessCode") { beeLogger.Log.Fatalf("Unknown flow type: %s. Possible values are `implicit`, `password`, `application` or `accessCode`.\n", p[1]) } out.AuthorizationURL = p[2] out.Flow = p[3] if len(p)%2 != 0 { out.Description = strings.Trim(p[len(p)-1], `" `) } out.Scopes = make(map[string]string) for i := 4; i < len(p)-1; i += 2 { out.Scopes[p[i]] = strings.Trim(p[i+1], `" `) } case "apiKey": if len(p) < 4 { beeLogger.Log.Fatalf("Not enough params for apiKey: %d\n", len(p)) } if !(p[3] == "header" || p[3] == "query") { beeLogger.Log.Fatalf("Unknown in type: %s. Possible values are `query` or `header`.\n", p[4]) } out.Name = p[2] out.In = p[3] if len(p) > 4 { out.Description = strings.Trim(p[4], `" `) } case "basic": if len(p) > 2 { out.Description = strings.Trim(p[2], `" `) } default: beeLogger.Log.Fatalf("Unknown security type: %s. Possible values are `oauth2`, `apiKey` or `basic`.\n", p[1]) } rootapi.SecurityDefinitions[p[0]] = out } else if strings.HasPrefix(s, "@Security") { if len(rootapi.Security) == 0 { rootapi.Security = make([]map[string][]string, 0) } rootapi.Security = append(rootapi.Security, getSecurity(s)) } } } } // Analyse controller package for _, im := range f.Imports { localName := "" if im.Name != nil { localName = im.Name.Name } analyseControllerPkg(path.Join(curpath, "vendor"), localName, im.Path.Value) } for _, d := range f.Decls { switch specDecl := d.(type) { case *ast.FuncDecl: for _, l := range specDecl.Body.List { switch stmt := l.(type) { case *ast.AssignStmt: for _, l := range stmt.Rhs { if v, ok := l.(*ast.CallExpr); ok { // Analyze NewNamespace, it will return version and the subfunction selExpr, selOK := v.Fun.(*ast.SelectorExpr) if !selOK || selExpr.Sel.Name != "NewNamespace" { continue } version, params := analyseNewNamespace(v) if rootapi.BasePath == "" && version != "" { rootapi.BasePath = version } for _, p := range params { switch pp := p.(type) { case *ast.CallExpr: var controllerName string if selname := pp.Fun.(*ast.SelectorExpr).Sel.String(); selname == "NSNamespace" { s, params := analyseNewNamespace(pp) for _, sp := range params { switch pp := sp.(type) { case *ast.CallExpr: if pp.Fun.(*ast.SelectorExpr).Sel.String() == "NSInclude" { controllerName = analyseNSInclude(s, pp) if v, ok := controllerComments[controllerName]; ok { rootapi.Tags = append(rootapi.Tags, swagger.Tag{ Name: strings.Trim(s, "/"), Description: v, }) } } } } } else if selname == "NSInclude" { controllerName = analyseNSInclude("", pp) if v, ok := controllerComments[controllerName]; ok { rootapi.Tags = append(rootapi.Tags, swagger.Tag{ Name: controllerName, // if the NSInclude has no prefix, we use the controllername as the tag Description: v, }) } } } } } } } } } } os.Mkdir(path.Join(curpath, "swagger"), 0755) fd, err := os.Create(path.Join(curpath, "swagger", "swagger.json")) if err != nil { panic(err) } fdyml, err := os.Create(path.Join(curpath, "swagger", "swagger.yml")) if err != nil { panic(err) } defer fdyml.Close() defer fd.Close() dt, err := json.MarshalIndent(rootapi, "", " ") dtyml, erryml := yaml.Marshal(rootapi) if err != nil || erryml != nil { panic(err) } _, err = fd.Write(dt) _, erryml = fdyml.Write(dtyml) if err != nil || erryml != nil { panic(err) } } // analyseNewNamespace returns version and the others params func analyseNewNamespace(ce *ast.CallExpr) (first string, others []ast.Expr) { for i, p := range ce.Args { if i == 0 { switch pp := p.(type) { case *ast.BasicLit: first = strings.Trim(pp.Value, `"`) } continue } others = append(others, p) } return } func analyseNSInclude(baseurl string, ce *ast.CallExpr) string { cname := "" for _, p := range ce.Args { x := p.(*ast.UnaryExpr).X.(*ast.CompositeLit).Type.(*ast.SelectorExpr) if v, ok := importlist[fmt.Sprint(x.X)]; ok { cname = v + x.Sel.Name } if apis, ok := controllerList[cname]; ok { for rt, item := range apis { tag := cname if baseurl != "" { rt = baseurl + rt tag = strings.Trim(baseurl, "/") } if item.Get != nil { item.Get.Tags = []string{tag} } if item.Post != nil { item.Post.Tags = []string{tag} } if item.Put != nil { item.Put.Tags = []string{tag} } if item.Patch != nil { item.Patch.Tags = []string{tag} } if item.Head != nil { item.Head.Tags = []string{tag} } if item.Delete != nil { item.Delete.Tags = []string{tag} } if item.Options != nil { item.Options.Tags = []string{tag} } if len(rootapi.Paths) == 0 { rootapi.Paths = make(map[string]*swagger.Item) } rt = urlReplace(rt) rootapi.Paths[rt] = item } } } return cname } func analyseControllerPkg(vendorPath, localName, pkgpath string) { pkgpath = strings.Trim(pkgpath, "\"") if isSystemPackage(pkgpath) { return } if pkgpath == "github.com/astaxie/beego" { return } if localName != "" { importlist[localName] = pkgpath } else { pps := strings.Split(pkgpath, "/") importlist[pps[len(pps)-1]] = pkgpath } gopaths := bu.GetGOPATHs() if len(gopaths) == 0 { beeLogger.Log.Fatal("GOPATH environment variable is not set or empty") } pkgRealpath := "" wg, _ := filepath.EvalSymlinks(filepath.Join(vendorPath, pkgpath)) if utils.FileExists(wg) { pkgRealpath = wg } else { wgopath := gopaths for _, wg := range wgopath { wg, _ = filepath.EvalSymlinks(filepath.Join(wg, "src", pkgpath)) if utils.FileExists(wg) { pkgRealpath = wg break } } } if pkgRealpath != "" { if _, ok := pkgCache[pkgpath]; ok { return } pkgCache[pkgpath] = struct{}{} } else { beeLogger.Log.Fatalf("Package '%s' does not exist in the GOPATH or vendor path", pkgpath) } fileSet := token.NewFileSet() astPkgs, err := parser.ParseDir(fileSet, pkgRealpath, func(info os.FileInfo) bool { name := info.Name() return !info.IsDir() && !strings.HasPrefix(name, ".") && strings.HasSuffix(name, ".go") }, parser.ParseComments) if err != nil { beeLogger.Log.Fatalf("Error while parsing dir at '%s': %s", pkgpath, err) } for _, pkg := range astPkgs { for _, fl := range pkg.Files { for _, d := range fl.Decls { switch specDecl := d.(type) { case *ast.FuncDecl: if specDecl.Recv != nil && len(specDecl.Recv.List) > 0 { if t, ok := specDecl.Recv.List[0].Type.(*ast.StarExpr); ok { // Parse controller method parserComments(specDecl, fmt.Sprint(t.X), pkgpath) } } case *ast.GenDecl: if specDecl.Tok == token.TYPE { for _, s := range specDecl.Specs { switch tp := s.(*ast.TypeSpec).Type.(type) { case *ast.StructType: _ = tp.Struct // Parse controller definition comments if strings.TrimSpace(specDecl.Doc.Text()) != "" { controllerComments[pkgpath+s.(*ast.TypeSpec).Name.String()] = specDecl.Doc.Text() } } } } } } } } } func isSystemPackage(pkgpath string) bool { goroot := os.Getenv("GOROOT") if goroot == "" { goroot = runtime.GOROOT() } if goroot == "" { beeLogger.Log.Fatalf("GOROOT environment variable is not set or empty") } wg, _ := filepath.EvalSymlinks(filepath.Join(goroot, "src", "pkg", pkgpath)) if utils.FileExists(wg) { return true } //TODO(zh):support go1.4 wg, _ = filepath.EvalSymlinks(filepath.Join(goroot, "src", pkgpath)) return utils.FileExists(wg) } func peekNextSplitString(ss string) (s string, spacePos int) { spacePos = strings.IndexFunc(ss, unicode.IsSpace) if spacePos < 0 { s = ss spacePos = len(ss) } else { s = strings.TrimSpace(ss[:spacePos]) } return } // parse the func comments func parserComments(f *ast.FuncDecl, controllerName, pkgpath string) error { var routerPath string var HTTPMethod string opts := swagger.Operation{ Responses: make(map[string]swagger.Response), } funcName := f.Name.String() comments := f.Doc funcParamMap := buildParamMap(f.Type.Params) //TODO: resultMap := buildParamMap(f.Type.Results) if comments != nil && comments.List != nil { for _, c := range comments.List { t := strings.TrimSpace(strings.TrimLeft(c.Text, "//")) if strings.HasPrefix(t, "@router") { elements := strings.TrimSpace(t[len("@router"):]) e1 := strings.SplitN(elements, " ", 2) if len(e1) < 1 { return errors.New("you should has router infomation") } routerPath = e1[0] if len(e1) == 2 && e1[1] != "" { e1 = strings.SplitN(e1[1], " ", 2) HTTPMethod = strings.ToUpper(strings.Trim(e1[0], "[]")) } else { HTTPMethod = "GET" } } else if strings.HasPrefix(t, "@Title") { opts.OperationID = controllerName + "." + strings.TrimSpace(t[len("@Title"):]) } else if strings.HasPrefix(t, "@Description") { opts.Description = strings.TrimSpace(t[len("@Description"):]) } else if strings.HasPrefix(t, "@Summary") { opts.Summary = strings.TrimSpace(t[len("@Summary"):]) } else if strings.HasPrefix(t, "@Success") { ss := strings.TrimSpace(t[len("@Success"):]) rs := swagger.Response{} respCode, pos := peekNextSplitString(ss) ss = strings.TrimSpace(ss[pos:]) respType, pos := peekNextSplitString(ss) if respType == "{object}" || respType == "{array}" { isArray := respType == "{array}" ss = strings.TrimSpace(ss[pos:]) schemaName, pos := peekNextSplitString(ss) if schemaName == "" { beeLogger.Log.Fatalf("[%s.%s] Schema must follow {object} or {array}", controllerName, funcName) } if strings.HasPrefix(schemaName, "[]") { schemaName = schemaName[2:] isArray = true } schema := swagger.Schema{} if sType, ok := basicTypes[schemaName]; ok { typeFormat := strings.Split(sType, ":") schema.Type = typeFormat[0] schema.Format = typeFormat[1] } else { m, mod, realTypes := getModel(schemaName) schema.Ref = "#/definitions/" + m if _, ok := modelsList[pkgpath+controllerName]; !ok { modelsList[pkgpath+controllerName] = make(map[string]swagger.Schema) } modelsList[pkgpath+controllerName][schemaName] = mod appendModels(pkgpath, controllerName, realTypes) } if isArray { rs.Schema = &swagger.Schema{ Type: "array", Items: &schema, } } else { rs.Schema = &schema } rs.Description = strings.TrimSpace(ss[pos:]) } else { rs.Description = strings.TrimSpace(ss) } opts.Responses[respCode] = rs } else if strings.HasPrefix(t, "@Param") { para := swagger.Parameter{} p := getparams(strings.TrimSpace(t[len("@Param "):])) if len(p) < 4 { beeLogger.Log.Fatal(controllerName + "_" + funcName + "'s comments @Param should have at least 4 params") } paramNames := strings.SplitN(p[0], "=>", 2) para.Name = paramNames[0] funcParamName := para.Name if len(paramNames) > 1 { funcParamName = paramNames[1] } paramType, ok := funcParamMap[funcParamName] if ok { delete(funcParamMap, funcParamName) } switch p[1] { case "query": fallthrough case "header": fallthrough case "path": fallthrough case "formData": fallthrough case "body": break default: beeLogger.Log.Warnf("[%s.%s] Unknown param location: %s. Possible values are `query`, `header`, `path`, `formData` or `body`.\n", controllerName, funcName, p[1]) } para.In = p[1] pp := strings.Split(p[2], ".") typ := pp[len(pp)-1] if len(pp) >= 2 { isArray := false if p[1] == "body" && strings.HasPrefix(p[2], "[]") { p[2] = p[2][2:] isArray = true } m, mod, realTypes := getModel(p[2]) if isArray { para.Schema = &swagger.Schema{ Type: "array", Items: &swagger.Schema{ Ref: "#/definitions/" + m, }, } } else { para.Schema = &swagger.Schema{ Ref: "#/definitions/" + m, } } if _, ok := modelsList[pkgpath+controllerName]; !ok { modelsList[pkgpath+controllerName] = make(map[string]swagger.Schema) } modelsList[pkgpath+controllerName][typ] = mod appendModels(pkgpath, controllerName, realTypes) } else { if typ == "auto" { typ = paramType } setParamType(¶, typ, pkgpath, controllerName) } switch len(p) { case 5: para.Required, _ = strconv.ParseBool(p[3]) para.Description = strings.Trim(p[4], `" `) case 6: para.Default = str2RealType(p[3], para.Type) para.Required, _ = strconv.ParseBool(p[4]) para.Description = strings.Trim(p[5], `" `) default: para.Description = strings.Trim(p[3], `" `) } opts.Parameters = append(opts.Parameters, para) } else if strings.HasPrefix(t, "@Failure") { rs := swagger.Response{} st := strings.TrimSpace(t[len("@Failure"):]) var cd []rune var start bool for i, s := range st { if unicode.IsSpace(s) { if start { rs.Description = strings.TrimSpace(st[i+1:]) break } else { continue } } start = true cd = append(cd, s) } opts.Responses[string(cd)] = rs } else if strings.HasPrefix(t, "@Deprecated") { opts.Deprecated, _ = strconv.ParseBool(strings.TrimSpace(t[len("@Deprecated"):])) } else if strings.HasPrefix(t, "@Accept") { accepts := strings.Split(strings.TrimSpace(strings.TrimSpace(t[len("@Accept"):])), ",") for _, a := range accepts { switch a { case "json": opts.Consumes = append(opts.Consumes, ajson) opts.Produces = append(opts.Produces, ajson) case "xml": opts.Consumes = append(opts.Consumes, axml) opts.Produces = append(opts.Produces, axml) case "plain": opts.Consumes = append(opts.Consumes, aplain) opts.Produces = append(opts.Produces, aplain) case "html": opts.Consumes = append(opts.Consumes, ahtml) opts.Produces = append(opts.Produces, ahtml) case "form": opts.Consumes = append(opts.Consumes, aform) } } } else if strings.HasPrefix(t, "@Security") { if len(opts.Security) == 0 { opts.Security = make([]map[string][]string, 0) } opts.Security = append(opts.Security, getSecurity(t)) } } } if routerPath != "" { //Go over function parameters which were not mapped and create swagger params for them for name, typ := range funcParamMap { para := swagger.Parameter{} para.Name = name setParamType(¶, typ, pkgpath, controllerName) if paramInPath(name, routerPath) { para.In = "path" } else { para.In = "query" } opts.Parameters = append(opts.Parameters, para) } var item *swagger.Item if itemList, ok := controllerList[pkgpath+controllerName]; ok { if it, ok := itemList[routerPath]; !ok { item = &swagger.Item{} } else { item = it } } else { controllerList[pkgpath+controllerName] = make(map[string]*swagger.Item) item = &swagger.Item{} } for _, hm := range strings.Split(HTTPMethod, ",") { switch hm { case "GET": item.Get = &opts case "POST": item.Post = &opts case "PUT": item.Put = &opts case "PATCH": item.Patch = &opts case "DELETE": item.Delete = &opts case "HEAD": item.Head = &opts case "OPTIONS": item.Options = &opts } } controllerList[pkgpath+controllerName][routerPath] = item } return nil } func setParamType(para *swagger.Parameter, typ string, pkgpath, controllerName string) { isArray := false paraType := "" paraFormat := "" if strings.HasPrefix(typ, "[]") { typ = typ[2:] isArray = true } if typ == "string" || typ == "number" || typ == "integer" || typ == "boolean" || typ == "array" || typ == "file" { paraType = typ } else if sType, ok := basicTypes[typ]; ok { typeFormat := strings.Split(sType, ":") paraType = typeFormat[0] paraFormat = typeFormat[1] } else { m, mod, realTypes := getModel(typ) para.Schema = &swagger.Schema{ Ref: "#/definitions/" + m, } if _, ok := modelsList[pkgpath+controllerName]; !ok { modelsList[pkgpath+controllerName] = make(map[string]swagger.Schema) } modelsList[pkgpath+controllerName][typ] = mod appendModels(pkgpath, controllerName, realTypes) } if isArray { if para.In == "body" { para.Schema = &swagger.Schema{ Type: "array", Items: &swagger.Schema{ Type: paraType, Format: paraFormat, }, } } else { para.Type = "array" para.Items = &swagger.ParameterItems{ Type: paraType, Format: paraFormat, } } } else { para.Type = paraType para.Format = paraFormat } } func paramInPath(name, route string) bool { return strings.HasSuffix(route, ":"+name) || strings.Contains(route, ":"+name+"/") } func getFunctionParamType(t ast.Expr) string { switch paramType := t.(type) { case *ast.Ident: return paramType.Name // case *ast.Ellipsis: // result := getFunctionParamType(paramType.Elt) // result.array = true // return result case *ast.ArrayType: return "[]" + getFunctionParamType(paramType.Elt) case *ast.StarExpr: return getFunctionParamType(paramType.X) case *ast.SelectorExpr: return getFunctionParamType(paramType.X) + "." + paramType.Sel.Name default: return "" } } func buildParamMap(list *ast.FieldList) map[string]string { i := 0 result := map[string]string{} if list != nil { funcParams := list.List for _, fparam := range funcParams { param := getFunctionParamType(fparam.Type) var paramName string if len(fparam.Names) > 0 { paramName = fparam.Names[0].Name } else { paramName = fmt.Sprint(i) i++ } result[paramName] = param } } return result } // analisys params return []string // @Param query form string true "The email for login" // [query form string true "The email for login"] func getparams(str string) []string { var s []rune var j int var start bool var r []string var quoted int8 for _, c := range str { if unicode.IsSpace(c) && quoted == 0 { if !start { continue } else { start = false j++ r = append(r, string(s)) s = make([]rune, 0) continue } } start = true if c == '"' { quoted ^= 1 continue } s = append(s, c) } if len(s) > 0 { r = append(r, string(s)) } return r } func getModel(str string) (objectname string, m swagger.Schema, realTypes []string) { strs := strings.Split(str, ".") objectname = strs[len(strs)-1] packageName := "" m.Type = "object" for _, pkg := range astPkgs { if strs[0] == pkg.Name { for _, fl := range pkg.Files { for k, d := range fl.Scope.Objects { if d.Kind == ast.Typ { if k != objectname { continue } packageName = pkg.Name parseObject(d, k, &m, &realTypes, astPkgs, pkg.Name) } } } } } if m.Title == "" { beeLogger.Log.Warnf("Cannot find the object: %s", str) // TODO remove when all type have been supported //os.Exit(1) } if len(rootapi.Definitions) == 0 { rootapi.Definitions = make(map[string]swagger.Schema) } objectname = packageName + "." + objectname rootapi.Definitions[objectname] = m return } func parseObject(d *ast.Object, k string, m *swagger.Schema, realTypes *[]string, astPkgs []*ast.Package, packageName string) { ts, ok := d.Decl.(*ast.TypeSpec) if !ok { beeLogger.Log.Fatalf("Unknown type without TypeSec: %v\n", d) } // TODO support other types, such as `ArrayType`, `MapType`, `InterfaceType` etc... switch t := ts.Type.(type) { case *ast.ArrayType: m.Title = k m.Type = "array" if isBasicType(fmt.Sprint(t.Elt)) { typeFormat := strings.Split(basicTypes[fmt.Sprint(t.Elt)], ":") m.Format = typeFormat[0] } else { objectName := packageName + "." + fmt.Sprint(t.Elt) if _, ok := rootapi.Definitions[objectName]; !ok { objectName, _, _ = getModel(objectName) } m.Items = &swagger.Schema{ Ref: "#/definitions/" + objectName, } } case *ast.Ident: parseIdent(t, k, m, astPkgs) case *ast.StructType: parseStruct(t, k, m, realTypes, astPkgs, packageName) } } // parse as enum, in the package, find out all consts with the same type func parseIdent(st *ast.Ident, k string, m *swagger.Schema, astPkgs []*ast.Package) { m.Title = k basicType := fmt.Sprint(st) if object, isStdLibObject := stdlibObject[basicType]; isStdLibObject { basicType = object } if k, ok := basicTypes[basicType]; ok { typeFormat := strings.Split(k, ":") m.Type = typeFormat[0] m.Format = typeFormat[1] } enums := make(map[int]string) enumValues := make(map[int]interface{}) for _, pkg := range astPkgs { for _, fl := range pkg.Files { for _, obj := range fl.Scope.Objects { if obj.Kind == ast.Con { vs, ok := obj.Decl.(*ast.ValueSpec) if !ok { beeLogger.Log.Fatalf("Unknown type without ValueSpec: %v\n", vs) } ti, ok := vs.Type.(*ast.Ident) if !ok { // TODO type inference, iota not support yet continue } // Only add the enums that are defined by the current identifier if ti.Name != k { continue } // For all names and values, aggregate them by it's position so that we can sort them later. for i, val := range vs.Values { v, ok := val.(*ast.BasicLit) if !ok { beeLogger.Log.Warnf("Unknown type without BasicLit: %v\n", v) continue } enums[int(val.Pos())] = fmt.Sprintf("%s = %s", vs.Names[i].Name, v.Value) switch v.Kind { case token.INT: vv, err := strconv.Atoi(v.Value) if err != nil { beeLogger.Log.Warnf("Unknown type with BasicLit to int: %v\n", v.Value) continue } enumValues[int(val.Pos())] = vv case token.FLOAT: vv, err := strconv.ParseFloat(v.Value, 64) if err != nil { beeLogger.Log.Warnf("Unknown type with BasicLit to int: %v\n", v.Value) continue } enumValues[int(val.Pos())] = vv default: enumValues[int(val.Pos())] = strings.Trim(v.Value, `"`) } } } } } } // Sort the enums by position if len(enums) > 0 { var keys []int for k := range enums { keys = append(keys, k) } sort.Ints(keys) for _, k := range keys { m.Enum = append(m.Enum, enums[k]) } // Automatically use the first enum value as the example. m.Example = enumValues[keys[0]] } } func parseStruct(st *ast.StructType, k string, m *swagger.Schema, realTypes *[]string, astPkgs []*ast.Package, packageName string) { m.Title = k if st.Fields.List != nil { m.Properties = make(map[string]swagger.Propertie) for _, field := range st.Fields.List { isSlice, realType, sType := typeAnalyser(field) if (isSlice && isBasicType(realType)) || sType == "object" { if len(strings.Split(realType, " ")) > 1 { realType = strings.Replace(realType, " ", ".", -1) realType = strings.Replace(realType, "&", "", -1) realType = strings.Replace(realType, "{", "", -1) realType = strings.Replace(realType, "}", "", -1) } else { realType = packageName + "." + realType } } *realTypes = append(*realTypes, realType) mp := swagger.Propertie{} isObject := false if isSlice { mp.Type = "array" if isBasicType(strings.Replace(realType, "[]", "", -1)) { typeFormat := strings.Split(sType, ":") mp.Items = &swagger.Propertie{ Type: typeFormat[0], Format: typeFormat[1], } } else { mp.Items = &swagger.Propertie{ Ref: "#/definitions/" + realType, } } } else { if sType == "object" { isObject = true mp.Ref = "#/definitions/" + realType } else if isBasicType(realType) { typeFormat := strings.Split(sType, ":") mp.Type = typeFormat[0] mp.Format = typeFormat[1] } else if realType == "map" { typeFormat := strings.Split(sType, ":") mp.AdditionalProperties = &swagger.Propertie{ Type: typeFormat[0], Format: typeFormat[1], } } } if field.Names != nil { // set property name as field name var name = field.Names[0].Name // if no tag skip tag processing if field.Tag == nil { m.Properties[name] = mp continue } var tagValues []string stag := reflect.StructTag(strings.Trim(field.Tag.Value, "`")) defaultValue := stag.Get("doc") if defaultValue != "" { r, _ := regexp.Compile(`default\((.*)\)`) if r.MatchString(defaultValue) { res := r.FindStringSubmatch(defaultValue) mp.Default = str2RealType(res[1], realType) } else { beeLogger.Log.Warnf("Invalid default value: %s", defaultValue) } } tag := stag.Get("json") if tag != "" { tagValues = strings.Split(tag, ",") } // dont add property if json tag first value is "-" if len(tagValues) == 0 || tagValues[0] != "-" { // set property name to the left most json tag value only if is not omitempty if len(tagValues) > 0 && tagValues[0] != "omitempty" { name = tagValues[0] } if thrifttag := stag.Get("thrift"); thrifttag != "" { ts := strings.Split(thrifttag, ",") if ts[0] != "" { name = ts[0] } } if required := stag.Get("required"); required != "" { m.Required = append(m.Required, name) } if desc := stag.Get("description"); desc != "" { mp.Description = desc } if example := stag.Get("example"); example != "" && !isObject && !isSlice { mp.Example = str2RealType(example, realType) } m.Properties[name] = mp } if ignore := stag.Get("ignore"); ignore != "" { continue } } else { // only parse case of when embedded field is TypeName // cases of *TypeName and Interface are not handled, maybe useless for swagger spec tag := "" if field.Tag != nil { stag := reflect.StructTag(strings.Trim(field.Tag.Value, "`")) tag = stag.Get("json") } if tag != "" { tagValues := strings.Split(tag, ",") if tagValues[0] == "-" { //if json tag is "-", omit continue } else { //if json tag is "something", output: something #definition/pkgname.Type m.Properties[tagValues[0]] = mp continue } } else { //if no json tag, expand all fields of the type here nm := &swagger.Schema{} for _, pkg := range astPkgs { for _, fl := range pkg.Files { for nameOfObj, obj := range fl.Scope.Objects { if obj.Name == fmt.Sprint(field.Type) { parseObject(obj, nameOfObj, nm, realTypes, astPkgs, pkg.Name) } } } } for name, p := range nm.Properties { m.Properties[name] = p } continue } } } } } func typeAnalyser(f *ast.Field) (isSlice bool, realType, swaggerType string) { if arr, ok := f.Type.(*ast.ArrayType); ok { if isBasicType(fmt.Sprint(arr.Elt)) { return true, fmt.Sprintf("[]%v", arr.Elt), basicTypes[fmt.Sprint(arr.Elt)] } if mp, ok := arr.Elt.(*ast.MapType); ok { return false, fmt.Sprintf("map[%v][%v]", mp.Key, mp.Value), "object" } if star, ok := arr.Elt.(*ast.StarExpr); ok { return true, fmt.Sprint(star.X), "object" } return true, fmt.Sprint(arr.Elt), "object" } switch t := f.Type.(type) { case *ast.StarExpr: basicType := fmt.Sprint(t.X) if k, ok := basicTypes[basicType]; ok { return false, basicType, k } return false, basicType, "object" case *ast.MapType: val := fmt.Sprintf("%v", t.Value) if isBasicType(val) { return false, "map", basicTypes[val] } return false, val, "object" } basicType := fmt.Sprint(f.Type) if object, isStdLibObject := stdlibObject[basicType]; isStdLibObject { basicType = object } if k, ok := basicTypes[basicType]; ok { return false, basicType, k } return false, basicType, "object" } func isBasicType(Type string) bool { if _, ok := basicTypes[Type]; ok { return true } return false } // append models func appendModels(pkgpath, controllerName string, realTypes []string) { for _, realType := range realTypes { if realType != "" && !isBasicType(strings.TrimLeft(realType, "[]")) && !strings.HasPrefix(realType, "map") && !strings.HasPrefix(realType, "&") { if _, ok := modelsList[pkgpath+controllerName][realType]; ok { continue } _, mod, newRealTypes := getModel(realType) modelsList[pkgpath+controllerName][realType] = mod appendModels(pkgpath, controllerName, newRealTypes) } } } func getSecurity(t string) (security map[string][]string) { security = make(map[string][]string) p := getparams(strings.TrimSpace(t[len("@Security"):])) if len(p) == 0 { beeLogger.Log.Fatalf("No params for security specified\n") } security[p[0]] = make([]string, 0) for i := 1; i < len(p); i++ { security[p[0]] = append(security[p[0]], p[i]) } return } func urlReplace(src string) string { pt := strings.Split(src, "/") for i, p := range pt { if len(p) > 0 { if p[0] == ':' { pt[i] = "{" + p[1:] + "}" } else if p[0] == '?' && p[1] == ':' { pt[i] = "{" + p[2:] + "}" } if pt[i][0] == '{' && strings.Contains(pt[i], ":") { pt[i] = pt[i][:strings.Index(pt[i], ":")] + "}" } else if pt[i][0] == '{' && strings.Contains(pt[i], "(") { pt[i] = pt[i][:strings.Index(pt[i], "(")] + "}" } } } return strings.Join(pt, "/") } func str2RealType(s string, typ string) interface{} { var err error var ret interface{} switch typ { case "int", "int64", "int32", "int16", "int8": ret, err = strconv.Atoi(s) case "uint", "uint64", "uint32", "uint16", "uint8": ret, err = strconv.ParseUint(s, 10, 0) case "bool": ret, err = strconv.ParseBool(s) case "float64": ret, err = strconv.ParseFloat(s, 64) case "float32": ret, err = strconv.ParseFloat(s, 32) default: return s } if err != nil { beeLogger.Log.Warnf("Invalid default value type '%s': %s", typ, s) return s } return ret }