core/zero: add usage reporter (#5281)

* wip

* add response

* handle empty email

* use set, update log

* add test

* add coalesce, comments, test

* add test, fix bug

* use builtin cmp.Or

* remove wait ready call

* use api error

pkg/zero/cluster/client.gen.go

@@ -628,6 +628,8 @@ func (r ExchangeClusterIdentityTokenResp) StatusCode() int {
 type ReportUsageResp struct {
 	Body         []byte
 	HTTPResponse *http.Response
+	JSON400      *ErrorResponse
+	JSON500      *ErrorResponse
 }
 
 // Status returns HTTPResponse.Status
@@ -937,6 +939,23 @@ func ParseReportUsageResp(rsp *http.Response) (*ReportUsageResp, error) {
 		HTTPResponse: rsp,
 	}
 
+	switch {
+	case strings.Contains(rsp.Header.Get("Content-Type"), "json") && rsp.StatusCode == 400:
+		var dest ErrorResponse
+		if err := json.Unmarshal(bodyBytes, &dest); err != nil {
+			return nil, err
+		}
+		response.JSON400 = &dest
+
+	case strings.Contains(rsp.Header.Get("Content-Type"), "json") && rsp.StatusCode == 500:
+		var dest ErrorResponse
+		if err := json.Unmarshal(bodyBytes, &dest); err != nil {
+			return nil, err
+		}
+		response.JSON500 = &dest
+
+	}
+
 	return response, nil
 }
 
@@ -1085,6 +1104,22 @@ func (r *ReportUsageResp) GetHTTPResponse() *http.Response {
 	return r.HTTPResponse
 }
 
+// GetBadRequestError implements apierror.APIResponse
+func (r *ReportUsageResp) GetBadRequestError() (string, bool) {
+	if r.JSON400 == nil {
+		return "", false
+	}
+	return r.JSON400.Error, true
+}
+
+// GetInternalServerError implements apierror.APIResponse
+func (r *ReportUsageResp) GetInternalServerError() (string, bool) {
+	if r.JSON500 == nil {
+		return "", false
+	}
+	return r.JSON500.Error, true
+}
+
 // GetValue implements apierror.APIResponse
 func (r *ReportUsageResp) GetValue() *EmptyResponse {
 	if r.StatusCode()/100 != 2 {

pkg/zero/cluster/openapi.yaml

@@ -163,6 +163,18 @@ paths:
       responses:
         "204":
           description: OK
+        "400":
+          description: Bad Request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
+        "500":
+          description: Internal Server Error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ErrorResponse"
 
 components:
   parameters:

pkg/zero/cluster/server.gen.go

@@ -534,6 +534,24 @@ func (response ReportUsage204Response) VisitReportUsageResponse(w http.ResponseW
 	return nil
 }
 
+type ReportUsage400JSONResponse ErrorResponse
+
+func (response ReportUsage400JSONResponse) VisitReportUsageResponse(w http.ResponseWriter) error {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(400)
+
+	return json.NewEncoder(w).Encode(response)
+}
+
+type ReportUsage500JSONResponse ErrorResponse
+
+func (response ReportUsage500JSONResponse) VisitReportUsageResponse(w http.ResponseWriter) error {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(500)
+
+	return json.NewEncoder(w).Encode(response)
+}
+
 // StrictServerInterface represents all server handlers.
 type StrictServerInterface interface {