Plugins: Add plugins auto update feature (#104112)

pkg/services/pluginsintegration/pluginchecker/checker.go

@@ -0,0 +1,36 @@
+package pluginchecker
+
+import "github.com/grafana/grafana/pkg/setting"
+
+type Preinstall interface {
+	IsPreinstalled(pluginID string) bool
+	IsPinned(pluginID string) bool
+}
+
+func ProvidePreinstall(
+	cfg *setting.Cfg,
+) *PreinstallImpl {
+	plugins := make(map[string]*setting.InstallPlugin)
+	for _, p := range cfg.PreinstallPlugins {
+		plugins[p.ID] = &p
+	}
+	return &PreinstallImpl{
+		plugins: plugins,
+	}
+}
+
+type PreinstallImpl struct {
+	plugins map[string]*setting.InstallPlugin
+}
+
+func (c *PreinstallImpl) IsPreinstalled(pluginID string) bool {
+	_, ok := c.plugins[pluginID]
+	return ok
+}
+
+func (c *PreinstallImpl) IsPinned(pluginID string) bool {
+	if p, ok := c.plugins[pluginID]; ok {
+		return p.Version != ""
+	}
+	return false
+}