Chore: Replace core plugins as external warning (#81877)

pkg/services/pluginsintegration/pluginexternal/check.go

@@ -0,0 +1,43 @@
+package pluginexternal
+
+import (
+	"context"
+
+	"github.com/grafana/grafana/pkg/plugins/log"
+	"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginstore"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+type Service struct {
+	cfg         *setting.Cfg
+	logger      log.Logger
+	pluginStore pluginstore.Store
+}
+
+func ProvideService(
+	cfg *setting.Cfg, pluginStore pluginstore.Store,
+) (*Service, error) {
+	logger := log.New("datasources")
+	s := &Service{
+		cfg:         cfg,
+		logger:      logger,
+		pluginStore: pluginStore,
+	}
+	return s, nil
+}
+
+func (s *Service) Run(ctx context.Context) error {
+	s.validateExternal()
+	return ctx.Err()
+}
+
+func (s *Service) validateExternal() {
+	for pluginID, pluginCfg := range s.cfg.PluginSettings {
+		if pluginCfg["as_external"] == "true" {
+			_, exists := s.pluginStore.Plugin(context.Background(), pluginID)
+			if !exists {
+				s.logger.Error("Core plugin expected to be loaded as external, but it is missing", "pluginID", pluginID)
+			}
+		}
+	}
+}