K8s: expose namespace in frontend_settings (#78090)

Co-authored-by: Todd Treece <360020+toddtreece@users.noreply.github.com>

pkg/api/dtos/frontend_settings.go

@@ -230,6 +230,9 @@ type FrontendSettingsDTO struct {
 
 	LoginError string `json:"loginError,omitempty"`
 
+	// The K8s namespace to use for this user
+	Namespace string `json:"namespace,omitempty"`
+
 	PluginsCDNBaseURL string `json:"pluginsCDNBaseURL,omitempty"`
 
 	SqlConnectionLimits FrontendSettingsSqlConnectionLimitsDTO `json:"sqlConnectionLimits"`

pkg/api/frontendsettings.go

@@ -274,6 +274,9 @@ func (hs *HTTPServer) getFrontendSettings(c *contextmodel.ReqContext) (*dtos.Fro
 		frontendSettings.GeomapDisableCustomBaseLayer = true
 	}
 
+	// Set the kubernetes namespace
+	frontendSettings.Namespace = hs.namespacer(c.SignedInUser.OrgID)
+
 	return frontendSettings, nil
 }
 

pkg/api/frontendsettings_test.go

@@ -20,6 +20,7 @@ import (
 	"github.com/grafana/grafana/pkg/plugins/pluginscdn"
 	accesscontrolmock "github.com/grafana/grafana/pkg/services/accesscontrol/mock"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/grafana/grafana/pkg/services/grafana-apiserver/endpoints/request"
 	"github.com/grafana/grafana/pkg/services/licensing"
 	"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginsettings"
 	"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginstore"
@@ -75,6 +76,7 @@ func setupTestEnvironment(t *testing.T, cfg *setting.Cfg, features *featuremgmt.
 			PluginsCDNURLTemplate: cfg.PluginsCDNURLTemplate,
 			PluginSettings:        cfg.PluginSettings,
 		}),
+		namespacer:    request.GetNamespaceMapper(cfg),
 		SocialService: social.ProvideService(cfg, features, &usagestats.UsageStatsMock{}, supportbundlestest.NewFakeBundleService(), remotecache.NewFakeCacheStorage()),
 	}
 

pkg/api/http_server.go

@@ -17,6 +17,7 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 
 	grafanaapiserver "github.com/grafana/grafana/pkg/services/grafana-apiserver"
+	"github.com/grafana/grafana/pkg/services/grafana-apiserver/endpoints/request"
 
 	"github.com/grafana/grafana/pkg/api/avatar"
 	"github.com/grafana/grafana/pkg/api/routing"
@@ -206,6 +207,7 @@ type HTTPServer struct {
 	starApi              *starApi.API
 	promRegister         prometheus.Registerer
 	clientConfigProvider grafanaapiserver.DirectRestConfigProvider
+	namespacer           request.NamespaceMapper
 }
 
 type ServerOptions struct {
@@ -348,6 +350,7 @@ func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routi
 		starApi:                      starApi,
 		promRegister:                 promRegister,
 		clientConfigProvider:         clientConfigProvider,
+		namespacer:                   request.GetNamespaceMapper(cfg),
 	}
 	if hs.Listener != nil {
 		hs.log.Debug("Using provided listener")