Alerting: Receiver API complete core implementation (#91738)

* Replace global authz abstraction with one compatible with uid scope

* Replace GettableApiReceiver with models.Receiver in receiver_svc

* GrafanaIntegrationConfig -> models.Integration

* Implement Create/Update methods

* Add optimistic concurrency to receiver API

* Add scope to ReceiversRead & ReceiversReadSecrets

migrates existing permissions to include implicit global scope

* Add receiver create, update, delete actions

* Check if receiver is used by rules before delete

* On receiver name change update in routes and notification settings

* Improve errors

* Linting

* Include read permissions are requirements for create/update/delete

* Alias ngalert/models to ngmodels to differentiate from v0alpha1 model

* Ensure integration UIDs are valid, unique, and generated if empty

* Validate integration settings on create/update

* Leverage UidToName to GetReceiver instead of GetReceivers

* Remove some unnecessary uses of simplejson

* alerting.notifications.receiver -> alerting.notifications.receivers

* validator -> provenanceValidator

* Only validate the modified receiver

stops existing invalid receivers from preventing modification of a valid
receiver.

* Improve error in Integration.Encrypt

* Remove scope from alert.notifications.receivers:create

* Add todos for receiver renaming

* Use receiverAC precondition checks in k8s api

* Linting

* Optional optimistic concurrency for delete

* make update-workspace

* More specific auth checks in k8s authorize.go

* Add debug log when delete optimistic concurrency is skipped

* Improve error message on authorizer.DecisionDeny

* Keep error for non-forbidden errutil errors

pkg/services/ngalert/api/api_notifications.go

@@ -8,7 +8,6 @@ import (
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/infra/log"
 	contextmodel "github.com/grafana/grafana/pkg/services/contexthandler/model"
-	"github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
 	"github.com/grafana/grafana/pkg/services/ngalert/models"
 )
 
@@ -19,8 +18,8 @@ type NotificationSrv struct {
 }
 
 type ReceiverService interface {
-	GetReceiver(ctx context.Context, q models.GetReceiverQuery, u identity.Requester) (definitions.GettableApiReceiver, error)
-	ListReceivers(ctx context.Context, q models.ListReceiversQuery, user identity.Requester) ([]definitions.GettableApiReceiver, error)
+	GetReceiver(ctx context.Context, q models.GetReceiverQuery, u identity.Requester) (*models.Receiver, error)
+	ListReceivers(ctx context.Context, q models.ListReceiversQuery, user identity.Requester) ([]*models.Receiver, error)
 }
 
 func (srv *NotificationSrv) RouteGetTimeInterval(c *contextmodel.ReqContext, name string) response.Response {
@@ -51,7 +50,12 @@ func (srv *NotificationSrv) RouteGetReceiver(c *contextmodel.ReqContext, name st
 		return response.ErrOrFallback(http.StatusInternalServerError, "failed to get receiver", err)
 	}
 
-	return response.JSON(http.StatusOK, receiver)
+	gettable, err := GettableApiReceiverFromReceiver(receiver)
+	if err != nil {
+		return response.ErrOrFallback(http.StatusInternalServerError, "failed to convert receiver", err)
+	}
+
+	return response.JSON(http.StatusOK, gettable)
 }
 
 func (srv *NotificationSrv) RouteGetReceivers(c *contextmodel.ReqContext) response.Response {
@@ -67,5 +71,10 @@ func (srv *NotificationSrv) RouteGetReceivers(c *contextmodel.ReqContext) respon
 		return response.ErrOrFallback(http.StatusInternalServerError, "failed to get receiver groups", err)
 	}
 
-	return response.JSON(http.StatusOK, receivers)
+	gettables, err := GettableApiReceiversFromReceivers(receivers)
+	if err != nil {
+		return response.ErrOrFallback(http.StatusInternalServerError, "failed to convert receivers", err)
+	}
+
+	return response.JSON(http.StatusOK, gettables)
 }