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// 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:datetime",
}
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 {
var x *ast.SelectorExpr
var p1 interface{} = p
if ident, ok := p1.(*ast.Ident); ok {
if assign, ok := ident.Obj.Decl.(*ast.AssignStmt); ok {
if len(assign.Rhs) > 0 {
p1 = assign.Rhs[0].(*ast.UnaryExpr)
}
}
}
if _, ok := p1.(*ast.UnaryExpr); ok {
x = p1.(*ast.UnaryExpr).X.(*ast.CompositeLit).Type.(*ast.SelectorExpr)
} else {
beeLogger.Log.Warnf("Couldn't determine type\n")
continue
}
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(&para, 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(&para, 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 sType, ok := basicTypes[(strings.Replace(realType, "[]", "", -1))]; ok {
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 object, isStdLibObject := stdlibObject[basicType]; isStdLibObject {
basicType = object
}
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
}