Advisor: Avoid one GCOM request per plugin (#105180)

pkg/plugins/manager/fakes/fakes.go

@@ -276,6 +276,10 @@ func (r *FakePluginRepo) PluginInfo(ctx context.Context, pluginID string, compat
 	return &repo.PluginInfo{}, nil
 }
 
+func (r *FakePluginRepo) GetPluginsInfo(ctx context.Context, compatOpts repo.CompatOpts) ([]repo.PluginInfo, error) {
+	return []repo.PluginInfo{}, nil
+}
+
 type fakeTracerProvider struct {
 	noop.TracerProvider
 }

pkg/plugins/repo/ifaces.go

@@ -16,8 +16,8 @@ type Service interface {
 	GetPluginArchiveInfo(ctx context.Context, pluginID, version string, opts CompatOpts) (*PluginArchiveInfo, error)
 	// PluginVersion will return plugin version based on the requested information.
 	PluginVersion(ctx context.Context, pluginID, version string, compatOpts CompatOpts) (VersionData, error)
-	// PluginInfo will return generic plugin information from grafana.com/api/plugins.
-	PluginInfo(ctx context.Context, pluginID string, compatOpts CompatOpts) (*PluginInfo, error)
+	// GetPluginsInfo will return a list of plugins from grafana.com/api/plugins.
+	GetPluginsInfo(ctx context.Context, compatOpts CompatOpts) ([]PluginInfo, error)
 }
 
 type CompatOpts struct {

pkg/plugins/repo/models.go

@@ -35,7 +35,8 @@ type ArchMeta struct {
 
 // PluginInfo is (a subset of) the JSON response from grafana.com/api/plugins/$pluginID
 type PluginInfo struct {
-	ID     int    `json:"id"`
-	Status string `json:"status"`
-	Slug   string `json:"slug"`
+	ID      int    `json:"id"`
+	Status  string `json:"status"`
+	Slug    string `json:"slug"`
+	Version string `json:"version"`
 }

pkg/plugins/repo/service.go

@@ -132,25 +132,25 @@ func (m *Manager) grafanaCompatiblePluginVersions(ctx context.Context, pluginID
 	return v.Versions, nil
 }
 
-func (m *Manager) PluginInfo(ctx context.Context, pluginID string, compatOpts CompatOpts) (*PluginInfo, error) {
+func (m *Manager) GetPluginsInfo(ctx context.Context, compatOpts CompatOpts) ([]PluginInfo, error) {
 	u, err := url.Parse(m.client.grafanaComAPIURL)
 	if err != nil {
 		return nil, err
 	}
 
-	u.Path = path.Join(u.Path, pluginID)
-
 	body, err := m.client.SendReq(ctx, u, compatOpts)
 	if err != nil {
 		return nil, err
 	}
 
-	var v PluginInfo
+	var v struct {
+		Items []PluginInfo `json:"items"`
+	}
 	err = json.Unmarshal(body, &v)
 	if err != nil {
 		m.log.Error("Failed to unmarshal plugin repo response", "error", err)
 		return nil, err
 	}
 
-	return &v, nil
+	return v.Items, nil
 }

pkg/plugins/repo/service_test.go

@@ -108,16 +108,17 @@ func TestGetPluginArchive(t *testing.T) {
 	}
 }
 
-func TestPluginInfo(t *testing.T) {
+func TestPluginIndex(t *testing.T) {
 	const (
 		pluginID = "grafana-test-datasource"
 	)
 
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		require.Equal(t, fmt.Sprintf("/%s", pluginID), r.URL.Path)
+		require.Equal(t, "12.0.0", r.Header.Get("grafana-version"))
+		require.Equal(t, "grafana 12.0.0", r.Header.Get("User-Agent"))
 		w.WriteHeader(http.StatusOK)
 		w.Header().Set("Content-Type", "application/json")
-		_, _ = fmt.Fprintf(w, `{ "id": 1, "slug": "%s", "status": "active" }`, pluginID)
+		_, _ = fmt.Fprintf(w, `{"items": [{ "id": 1, "slug": "%s", "status": "active" }]}`, pluginID)
 	}))
 	t.Cleanup(srv.Close)
 
@@ -126,11 +127,18 @@ func TestPluginInfo(t *testing.T) {
 		BaseURL:       srv.URL,
 		Logger:        log.NewTestPrettyLogger(),
 	})
-	pi, err := m.PluginInfo(context.Background(), pluginID, CompatOpts{})
+	pi, err := m.GetPluginsInfo(context.Background(), CompatOpts{
+		grafanaVersion: "12.0.0",
+		system: SystemCompatOpts{
+			os:   "darwin",
+			arch: "amd64",
+		},
+	})
 	require.NoError(t, err)
-	require.Equal(t, 1, pi.ID)
-	require.Equal(t, pluginID, pi.Slug)
-	require.Equal(t, "active", pi.Status)
+	require.Len(t, pi, 1)
+	require.Equal(t, 1, pi[0].ID)
+	require.Equal(t, pluginID, pi[0].Slug)
+	require.Equal(t, "active", pi[0].Status)
 }
 
 func verifyArchive(t *testing.T, archive *PluginArchive) {