Plugins: Local provider for meta (#114474)

apps/plugins/pkg/app/meta/local.go

@@ -0,0 +1,53 @@
+package meta
+
+import (
+	"context"
+	"time"
+
+	"github.com/grafana/grafana/pkg/plugins"
+	"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginstore"
+)
+
+const (
+	defaultLocalTTL = 1 * time.Hour
+)
+
+// PluginAssetsCalculator is an interface for calculating plugin asset information.
+// LocalProvider requires this to calculate loading strategy and module hash.
+type PluginAssetsCalculator interface {
+	LoadingStrategy(ctx context.Context, p pluginstore.Plugin) plugins.LoadingStrategy
+	ModuleHash(ctx context.Context, p pluginstore.Plugin) string
+}
+
+// LocalProvider retrieves plugin metadata for locally installed plugins.
+// It uses the plugin store to access plugins that have already been loaded.
+type LocalProvider struct {
+	store        pluginstore.Store
+	pluginAssets PluginAssetsCalculator
+}
+
+// NewLocalProvider creates a new LocalProvider for locally installed plugins.
+// pluginAssets is required for calculating loading strategy and module hash.
+func NewLocalProvider(pluginStore pluginstore.Store, pluginAssets PluginAssetsCalculator) *LocalProvider {
+	return &LocalProvider{
+		store:        pluginStore,
+		pluginAssets: pluginAssets,
+	}
+}
+
+// GetMeta retrieves plugin metadata for locally installed plugins.
+func (p *LocalProvider) GetMeta(ctx context.Context, pluginID, version string) (*Result, error) {
+	plugin, exists := p.store.Plugin(ctx, pluginID)
+	if !exists {
+		return nil, ErrMetaNotFound
+	}
+
+	loadingStrategy := p.pluginAssets.LoadingStrategy(ctx, plugin)
+	moduleHash := p.pluginAssets.ModuleHash(ctx, plugin)
+
+	spec := pluginStorePluginToMeta(plugin, loadingStrategy, moduleHash)
+	return &Result{
+		Meta: spec,
+		TTL:  defaultLocalTTL,
+	}, nil
+}