feature: goctl jwt (#91)

* rebase upstream

* rebase

* trim no need line

* trim no need line

* trim no need line

* update doc

* remove update

* remove no need

* remove no need

* goctl add jwt support

* goctl add jwt support

* goctl add jwt support

* goctl add jwt support

* goctl add jwt support

* goctl add jwt support

* goctl add jwt support

Co-authored-by: kingxt <dream4kingxt@163.com>

doc/jwt.md

@@ -21,26 +21,42 @@ type JwtTokenResponse struct {
   RefreshAfter int64  `json:"refresh_after"` // 建议客户端刷新token的绝对时间
 }
 
+type GetUserRequest struct { 
+  UserId string `json:"userId"`
+}
+
+type GetUserResponse struct {
+  Name string `json:"name"`
+}
+
 service jwt-api {
   @server(
     handler: JwtHandler
   )
   post /user/token(JwtTokenRequest) returns (JwtTokenResponse)
 }
-````
 
-再次在生成服务目录中执行：`goctl api go -api jwt.api -dir .`
+@server(
+  jwt: JwtAuth
+)
+service jwt-api {
+  @server(
+    handler: GetUserHandler
+  )
+  post /user/info(GetUserRequest) returns (GetUserResponse)
+}
+````
 
+在服务jwt目录中执行：`goctl api go -api jwt.api -dir .`
 打开jwtlogic.go文件，修改 `func (l *JwtLogic) Jwt(req types.JwtTokenRequest) (*types.JwtTokenResponse, error) {` 方法如下：
 
 ```go
-const AccessSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 
 func (l *JwtLogic) Jwt(req types.JwtTokenRequest) (*types.JwtTokenResponse, error) {
-	var accessExpire int64 = 60 * 60 * 24 * 7
+	var accessExpire = l.svcCtx.Config.JwtAuth.AccessExpire
 
 	now := time.Now().Unix()
-	accessToken, err := l.GenToken(now, AccessSecret, nil, accessExpire)
+	accessToken, err := l.GenToken(now, l.svcCtx.Config.JwtAuth.AccessSecret, nil, accessExpire)
 	if err != nil {
 		return nil, err
 	}
@@ -63,7 +79,16 @@ func (l *JwtLogic) GenToken(iat int64, secretKey string, payloads map[string]int
 }
 ```
 
-启动服务器，然后测试下获取到的token
+在启动服务之前，我们需要修改etc/jwt-api.yaml文件如下：
+```yaml
+Name: jwt-api
+Host: 0.0.0.0
+Port: 8888
+JwtAuth:
+  AccessSecret: xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+  AccessExpire: 604800
+```
+启动服务器，然后测试下获取到的token。
 
 ```sh
 ➜  jwt curl --location --request POST '127.0.0.1:8888/user/token'
@@ -74,62 +99,8 @@ func (l *JwtLogic) GenToken(iat int64, secretKey string, payloads map[string]int
 
 ### 2 服务器验证JWT token
 
-1. 添加一个测试JWT的路由，修改api文件如下：
-
-```go
-type JwtTokenRequest struct {
-}
-
-type JwtTokenResponse struct {
-  AccessToken  string `json:"access_token"`
-  AccessExpire int64  `json:"access_expire"`
-  RefreshAfter int64  `json:"refresh_after"` // 建议客户端刷新token的绝对时间
-}
-
-type GetUserRequest struct {
-  UserId string `json:"userId"`
-}
-
-type GetUserResponse struct {
-  Name string `json:"name"`
-}
-
-service jwt-api {
-  @server(
-    handler: JwtHandler
-  )
-  post /user/token(JwtTokenRequest) returns (JwtTokenResponse)
-
-  @server(
-    handler: GetUserHandler
-  )
-  post /user/getUser(GetUserRequest) returns (GetUserResponse)
-}
-```
-
-再次执行 `goctl api go -api jwt.api -dir .` 生成代码。
-
-2. 修改 routes.go，给协议添加JWT认证  `rest.WithJwt(logic.AccessSecret)`
-
-```go
-func RegisterHandlers(engine *rest.Server, serverCtx *svc.ServiceContext) {
-	engine.AddRoutes([]rest.Route{
-		{
-			Method:  http.MethodPost,
-			Path:    "/user/token",
-			Handler: jwtHandler(serverCtx),
-		},
-	})
-	engine.AddRoutes([]rest.Route{
-		{
-			Method:  http.MethodPost,
-			Path:    "/user/info",
-			Handler: getUserHandler(serverCtx),
-		},
-	}, rest.WithJwt(logic.AccessSecret))
-}
-```
-
+1. 在api文件中通过`jwt: JwtAuth`标记的service表示激活了jwt认证。
+2. 可以阅读rest/handler/authhandler.go文件了解服务器jwt实现。
 3. 修改getuserlogic.go如下：
 
 ```go
@@ -165,4 +136,5 @@ http: 200
 
 
 
-综上所述：基于go-zero的JWT认证完成，在真实生产环境部署时候，AccessSecret, AccessExpire, RefreshAfter可以通过配置文件配置，RefreshAfter 是告诉客户端什么时候该刷新JWT token了，一般都需要设置过期时间前几天。
+综上所述：基于go-zero的JWT认证完成，在真实生产环境部署时候，AccessSecret, AccessExpire, RefreshAfter根据业务场景通过配置文件配置，RefreshAfter 是告诉客户端什么时候该刷新JWT token了，一般都需要设置过期时间前几天。
+

tools/goctl/api/gogen/gen.go

@@ -53,7 +53,7 @@ func DoGenProject(apiFile, dir string, force bool) error {
 
 	logx.Must(util.MkdirIfNotExist(dir))
 	logx.Must(genEtc(dir, api))
-	logx.Must(genConfig(dir))
+	logx.Must(genConfig(dir, api))
 	logx.Must(genMain(dir, api))
 	logx.Must(genServiceContext(dir, api))
 	logx.Must(genTypes(dir, api, force))

tools/goctl/api/gogen/genconfig.go

@@ -3,8 +3,10 @@ package gogen
 import (
 	"bytes"
 	"fmt"
+	"strings"
 	"text/template"
 
+	"github.com/tal-tech/go-zero/tools/goctl/api/spec"
 	"github.com/tal-tech/go-zero/tools/goctl/api/util"
 	"github.com/tal-tech/go-zero/tools/goctl/vars"
 )
@@ -17,11 +19,18 @@ import {{.authImport}}
 
 type Config struct {
 	rest.RestConf
+	{{.auth}}
 }
+`
+
+	jwtTemplate = ` struct {
+		AccessSecret string
+		AccessExpire int64
+	}
 `
 )
 
-func genConfig(dir string) error {
+func genConfig(dir string, api *spec.ApiSpec) error {
 	fp, created, err := util.MaybeCreateFile(dir, configDir, configFile)
 	if err != nil {
 		return err
@@ -31,11 +40,18 @@ func genConfig(dir string) error {
 	}
 	defer fp.Close()
 
+	var authNames = getAuths(api)
+	var auths []string
+	for _, item := range authNames {
+		auths = append(auths, fmt.Sprintf("%s %s", item, jwtTemplate))
+	}
+
 	var authImportStr = fmt.Sprintf("\"%s/rest\"", vars.ProjectOpenSourceUrl)
 	t := template.Must(template.New("configTemplate").Parse(configTemplate))
 	buffer := new(bytes.Buffer)
 	err = t.Execute(buffer, map[string]string{
 		"authImport": authImportStr,
+		"auth":       strings.Join(auths, "\n"),
 	})
 	if err != nil {
 		return nil

tools/goctl/api/gogen/genroutes.go

@@ -180,6 +180,11 @@ func getRoutes(api *spec.ApiSpec) ([]group, error) {
 				handler: handler,
 			})
 		}
+
+		if value, ok := apiutil.GetAnnotationValue(g.Annotations, "server", "jwt"); ok {
+			groupedRoutes.authName = value
+			groupedRoutes.jwtEnabled = true
+		}
 		routes = append(routes, groupedRoutes)
 	}