i18n: wires up translations for plugins (#102853)

* i18n: consolidate i18n types & runtime services

* Chore: updates after PR feedback

* Chore: updates after feedback

* Chore: updates after feedback

* Chore: adds feature toggle

* Chore: adds locale to backend

* Chore: adds locales to i18n instance

* Chore: fix missing path in CODEOWNERS

* Chore: fix go lint issues

* Chore: fix missing path in CODEOWNERS

* Chore: updates after PR feedback

* Trigger build

* Chore: updates after PR feedback

* Chore: use resolved language for lookup

* Chore: updates after PR feedback

* Update pkg/plugins/plugins.go

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

* Chore: updates after PR feedback

* Chore: updates after PR feedback

---------

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

pkg/services/dashboards/service/dashboard_service_test.go

@@ -1977,7 +1977,7 @@ func TestGetDashboardUIDByID(t *testing.T) {
 
 func TestUnstructuredToLegacyDashboard(t *testing.T) {
 	k8sCliMock := new(client.MockK8sHandler)
-	k8sCliMock.On("GetUsersFromMeta", mock.Anything, mock.Anything).Return(map[string]*user.User{"user:useruid": &user.User{ID: 10, UID: "useruid"}}, nil)
+	k8sCliMock.On("GetUsersFromMeta", mock.Anything, mock.Anything).Return(map[string]*user.User{"user:useruid": {ID: 10, UID: "useruid"}}, nil)
 	dr := &DashboardServiceImpl{
 		k8sclient: k8sCliMock,
 	}

pkg/services/dashboardversion/dashverimpl/dashver_test.go

@@ -73,7 +73,7 @@ func TestDashboardVersionService(t *testing.T) {
 		obj, err := utils.MetaAccessor(dash)
 		require.NoError(t, err)
 		obj.SetUpdatedTimestamp(&updatedTimestamp)
-		mockCli.On("GetUsersFromMeta", mock.Anything, []string{"user:1", ""}).Return(map[string]*user.User{"user:1": &user.User{ID: 1}}, nil)
+		mockCli.On("GetUsersFromMeta", mock.Anything, []string{"user:1", ""}).Return(map[string]*user.User{"user:1": {ID: 1}}, nil)
 		mockCli.On("List", mock.Anything, int64(1), mock.Anything).Return(&unstructured.UnstructuredList{
 			Items: []unstructured.Unstructured{*dash}}, nil).Once()
 		res, err := dashboardVersionService.Get(context.Background(), &dashver.GetDashboardVersionQuery{

pkg/services/featuremgmt/registry.go

@@ -1818,6 +1818,13 @@ var (
 			HideFromDocs:      true,
 			Expression:        "true", // enabled by default
 		},
+		{
+			Name:         "localizationForPlugins",
+			Description:  "Enables localization for plugins",
+			Stage:        FeatureStageExperimental,
+			Owner:        grafanaPluginsPlatformSquad,
+			FrontendOnly: false,
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -239,3 +239,4 @@ alertingMigrationUI,experimental,@grafana/alerting-squad,false,false,true
 unifiedStorageHistoryPruner,experimental,@grafana/search-and-storage,false,false,false
 unifiedStorageGrpcConnectionPool,experimental,@grafana/search-and-storage,false,false,false
 alertingRuleRecoverDeleted,GA,@grafana/alerting-squad,false,false,true
+localizationForPlugins,experimental,@grafana/plugins-platform-backend,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -966,4 +966,8 @@ const (
 	// FlagAlertingRuleRecoverDeleted
 	// Enables the UI functionality to recover and view deleted alert rules
 	FlagAlertingRuleRecoverDeleted = "alertingRuleRecoverDeleted"
+
+	// FlagLocalizationForPlugins
+	// Enables localization for plugins
+	FlagLocalizationForPlugins = "localizationForPlugins"
 )

pkg/services/featuremgmt/toggles_gen.json

@@ -2469,6 +2469,18 @@
         "frontend": true
       }
     },
+    {
+      "metadata": {
+        "name": "localizationForPlugins",
+        "resourceVersion": "1742561476144",
+        "creationTimestamp": "2025-03-21T12:51:16Z"
+      },
+      "spec": {
+        "description": "Enables localization for plugins",
+        "stage": "experimental",
+        "codeowner": "@grafana/plugins-platform-backend"
+      }
+    },
     {
       "metadata": {
         "name": "logQLScope",

pkg/services/pluginsintegration/pipeline/pipeline.go

@@ -44,7 +44,7 @@ func ProvideDiscoveryStage(cfg *config.PluginManagementCfg, pf finder.Finder, pr
 
 func ProvideBootstrapStage(cfg *config.PluginManagementCfg, sc plugins.SignatureCalculator, a *assetpath.Service) *bootstrap.Bootstrap {
 	return bootstrap.New(cfg, bootstrap.Opts{
-		ConstructFunc: bootstrap.DefaultConstructFunc(sc, a),
+		ConstructFunc: bootstrap.DefaultConstructFunc(cfg, sc, a),
 		DecorateFuncs: bootstrap.DefaultDecorateFuncs(cfg),
 	})
 }

pkg/services/pluginsintegration/pluginconfig/config.go

@@ -34,6 +34,7 @@ func ProvidePluginManagementConfig(cfg *setting.Cfg, settingProvider setting.Pro
 			SkipHostEnvVarsEnabled:      features.IsEnabledGlobally(featuremgmt.FlagPluginsSkipHostEnvVars),
 			SriChecksEnabled:            features.IsEnabledGlobally(featuremgmt.FlagPluginsSriChecks),
 			PluginsCDNSyncLoaderEnabled: features.IsEnabledGlobally(featuremgmt.FlagPluginsCDNSyncLoader),
+			LocalizationForPlugins:      features.IsEnabledGlobally(featuremgmt.FlagLocalizationForPlugins),
 		},
 		cfg.AngularSupportEnabled,
 		cfg.GrafanaComAPIURL,

pkg/services/pluginsintegration/pluginstore/plugins.go

@@ -35,6 +35,8 @@ type Plugin struct {
 	Angular plugins.AngularMeta
 
 	ExternalService *auth.ExternalService
+
+	Translations map[string]string
 }
 
 func (p Plugin) SupportsStreaming() bool {
@@ -76,6 +78,7 @@ func ToGrafanaDTO(p *plugins.Plugin) Plugin {
 		BaseURL:           p.BaseURL,
 		ExternalService:   p.ExternalService,
 		Angular:           p.Angular,
+		Translations:      p.Translations,
 	}
 
 	if p.Parent != nil {

pkg/services/pluginsintegration/pluginstore/plugins_test.go

@@ -0,0 +1,22 @@
+package pluginstore
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana/pkg/plugins"
+	"github.com/stretchr/testify/require"
+)
+
+func TestToGrafanaDTO(t *testing.T) {
+	plugin := &plugins.Plugin{
+		Translations: map[string]string{
+			"en-US": "public/plugins/test-app/locales/en-US/test-app.json",
+			"pt-BR": "public/plugins/test-app/locales/pt-BR/test-app.json",
+		},
+	}
+
+	t.Run("Translations", func(t *testing.T) {
+		dto := ToGrafanaDTO(plugin)
+		require.Equal(t, plugin.Translations, dto.Translations)
+	})
+}