api add middleware support (#140)

* 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 support import

* goctl support import

* support return ()

* revert

* refactor and rename folder to group

* remove no need

* add anonymous annotation

* optimized

* rename

* rename

* update test

* api add middleware support: usage:

@server(
    middleware: M1, M2
)

* api add middleware support: usage:

@server(
    middleware: M1, M2
)

* simple logic

* should reverse middlewares

* optimized

* optimized

* rename

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

tools/goctl/api/gogen/util.go

@@ -66,6 +66,18 @@ func getAuths(api *spec.ApiSpec) []string {
 	return authNames.KeysStr()
 }
 
+func getMiddleware(api *spec.ApiSpec) []string {
+	result := collection.NewSet()
+	for _, g := range api.Service.Groups {
+		if value, ok := util.GetAnnotationValue(g.Annotations, "server", "middleware"); ok {
+			for _, item := range strings.Split(value, ",") {
+				result.Add(strings.TrimSpace(item))
+			}
+		}
+	}
+	return result.KeysStr()
+}
+
 func formatCode(code string) string {
 	ret, err := goformat.Source([]byte(code))
 	if err != nil {