Add notification setting validation API

Signed-off-by: root <dehaocheng@yunify.com>

pkg/kapis/notification/v2beta2/handler.go

@@ -0,0 +1,114 @@
+package v2beta2
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/emicklei/go-restful"
+	"kubesphere.io/api/notification/v2beta2"
+
+	nm "kubesphere.io/kubesphere/pkg/simple/client/notification"
+)
+
+const (
+	VerificationAPIPath = "/api/v2/verify"
+)
+
+type handler struct {
+	option *nm.Options
+}
+
+type Result struct {
+	Code    int    `json:"Status"`
+	Message string `json:"Message"`
+}
+type notification struct {
+	Config   v2beta2.Config   `json:"config"`
+	Receiver v2beta2.Receiver `json:"receiver"`
+}
+
+func newHandler(option *nm.Options) *handler {
+	return &handler{
+		option,
+	}
+}
+
+func (h handler) Verify(request *restful.Request, response *restful.Response) {
+	opt := h.option
+	if opt == nil || len(opt.Endpoint) == 0 {
+		response.WriteAsJson(Result{
+			http.StatusBadRequest,
+			"Cannot find Notification Manager endpoint",
+		})
+	}
+	host := opt.Endpoint
+	notification := notification{}
+	reqBody, err := ioutil.ReadAll(request.Request.Body)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+
+	err = json.Unmarshal(reqBody, &notification)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+
+	receiver := notification.Receiver
+	user := request.PathParameter("user")
+
+	if receiver.Labels["type"] == "tenant" {
+		if user != receiver.Labels["user"] {
+			response.WriteAsJson(Result{
+				http.StatusForbidden,
+				"Permission denied",
+			})
+			return
+		}
+	}
+	if receiver.Labels["type"] == "global" {
+		if user != "" {
+			response.WriteAsJson(Result{
+				http.StatusForbidden,
+				"Permission denied",
+			})
+			return
+		}
+	}
+
+	req, err := http.NewRequest("POST", fmt.Sprintf("%s%s", host, VerificationAPIPath), bytes.NewReader(reqBody))
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+	req.Header = request.Request.Header
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		// return 500
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+
+	var result Result
+	err = json.Unmarshal(body, &result)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusInternalServerError, err)
+		return
+	}
+
+	response.WriteAsJson(result)
+}