task: added api for getting default template values

api/restHandler/app/DeploymentPipelineRestHandler.go

@@ -40,6 +40,7 @@ type DevtronAppDeploymentRestHandler interface {
 type DevtronAppDeploymentConfigRestHandler interface {
 	ConfigureDeploymentTemplateForApp(w http.ResponseWriter, r *http.Request)
 	GetDeploymentTemplate(w http.ResponseWriter, r *http.Request)
+	GetDefaultDeploymentTemplate(w http.ResponseWriter, r *http.Request)
 	GetAppOverrideForDefaultTemplate(w http.ResponseWriter, r *http.Request)
 
 	EnvConfigOverrideCreate(w http.ResponseWriter, r *http.Request)
@@ -588,6 +589,40 @@ func (handler PipelineConfigRestHandlerImpl) GetDeploymentTemplate(w http.Respon
 	common.WriteJsonResp(w, nil, appConfigResponse, http.StatusOK)
 }
 
+func (handler *PipelineConfigRestHandlerImpl) GetDefaultDeploymentTemplate(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	appId, err := strconv.Atoi(vars["appId"])
+	if err != nil {
+		handler.Logger.Error("error in getting appId path param, GetDefaultDeploymentTemplate", "err", err)
+		common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
+		return
+	}
+	chartRefId, err := strconv.Atoi(vars["chartRefId"])
+	if err != nil {
+		handler.Logger.Error("error in getting chartRefId path param, GetDefaultDeploymentTemplate", "err", err)
+		common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
+		return
+	}
+	token := r.Header.Get("token")
+	app, err := handler.pipelineBuilder.GetApp(appId)
+	if err != nil {
+		common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
+		return
+	}
+	obj := handler.enforcerUtil.GetAppRBACName(app.AppName)
+	if ok := handler.enforcer.Enforce(token, casbin.ResourceApplications, casbin.ActionGet, obj); !ok {
+		common.WriteJsonResp(w, fmt.Errorf("unauthorized user"), "unauthorized user", http.StatusForbidden)
+		return
+	}
+	defaultTemplate, err := handler.chartService.GetAppOverrideForDefaultTemplate(chartRefId)
+	if err != nil {
+		handler.Logger.Errorw("error in getting default deployment template, GetDefaultDeploymentTemplate", "err", err, "appId", appId, "chartRefId", chartRefId)
+		common.WriteJsonResp(w, err, nil, http.StatusInternalServerError)
+		return
+	}
+	common.WriteJsonResp(w, nil, defaultTemplate, http.StatusOK)
+}
+
 func (handler PipelineConfigRestHandlerImpl) GetCdPipelines(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 	appId, err := strconv.Atoi(vars["appId"])

api/router/PipelineConfigRouter.go

@@ -63,6 +63,7 @@ func (router PipelineConfigRouterImpl) initPipelineConfigRouter(configRouter *mu
 
 	configRouter.Path("/template").HandlerFunc(router.restHandler.ConfigureDeploymentTemplateForApp).Methods("POST")
 	configRouter.Path("/template/{appId}/{chartRefId}").HandlerFunc(router.restHandler.GetDeploymentTemplate).Methods("GET")
+	configRouter.Path("/template/default/{appId}/{chartRefId}").HandlerFunc(router.restHandler.GetDefaultDeploymentTemplate).Methods("GET")
 	configRouter.Path("/template/update").HandlerFunc(router.restHandler.UpdateAppOverride).Methods("POST")
 
 	configRouter.Path("/cd-pipeline").HandlerFunc(router.restHandler.CreateCdPipeline).Methods("POST")

specs/default-template-values.yaml

@@ -0,0 +1,40 @@
+openapi: "3.0.3"
+info:
+  version: 1.0.0
+  title: Devtron Labs
+paths:
+    /orchestrator/app/template/default:
+      get:
+        description: Get default values of template by chartRefId
+        parameters:
+          - name: appId
+            in: query
+            required: true
+            schema:
+              type: integer
+          - name: chartRefId
+            in: query
+            required: true
+            schema:
+              type: integer
+        responses:
+          "200":
+            description: value
+            content:
+              application/json:
+                schema:
+                  $ref: "#/components/schemas/DefaultTemplateResponse"
+components:
+  schemas:
+    DefaultTemplateResponse:
+      properties:
+        appOverride:
+          type: array
+          items:
+            type: object
+            properties:
+              Key:
+                type: string
+              Value:
+                type: string
+          description: template json in form of map