Chore: Change so we cache loading plugins by its version (#41367)

* making it possible to cache plugins based on the version.

* feat(plugincache): introduce function to invalidate entries

* removed todo's

* added tests for the cache buster.

* fixed tests.

* fixed failing tests.

Co-authored-by: Jack Westbrook <jack.westbrook@gmail.com>

packages/grafana-data/src/types/config.ts

@@ -80,6 +80,16 @@ export interface SentryConfig {
   sampleRate: number;
 }
 
+/**
+ * Describes the plugins that should be preloaded prior to start Grafana.
+ *
+ * @public
+ */
+export type PreloadPlugin = {
+  path: string;
+  version: string;
+};
+
 /**
  * Describes all the different Grafana configuration values available for an instance.
  *
@@ -123,7 +133,7 @@ export interface GrafanaConfig {
   liveEnabled: boolean;
   theme: GrafanaTheme;
   theme2: GrafanaTheme2;
-  pluginsToPreload: string[];
+  pluginsToPreload: PreloadPlugin[];
   featureToggles: FeatureToggles;
   licenseInfo: LicenseInfo;
   http2Enabled: boolean;

packages/grafana-data/src/types/index.ts

@@ -36,6 +36,6 @@ export * from './live';
 export * from './variables';
 export * from './geometry';
 export { isUnsignedPluginSignature } from './pluginSignature';
-export { GrafanaConfig, BuildInfo, FeatureToggles, LicenseInfo } from './config';
+export { GrafanaConfig, BuildInfo, FeatureToggles, LicenseInfo, PreloadPlugin } from './config';
 export * from './alerts';
 export * from './slider';

packages/grafana-runtime/src/config.ts

@@ -10,6 +10,7 @@ import {
   LicenseInfo,
   MapLayerOptions,
   PanelPluginMeta,
+  PreloadPlugin,
   systemDateFormats,
   SystemDateFormatSettings,
 } from '@grafana/data';
@@ -59,7 +60,7 @@ export class GrafanaBootConfig implements GrafanaConfig {
   liveEnabled = true;
   theme: GrafanaTheme;
   theme2: GrafanaTheme2;
-  pluginsToPreload: string[] = [];
+  pluginsToPreload: PreloadPlugin[] = [];
   featureToggles: FeatureToggles = {
     accesscontrol: false,
     trimDefaults: false,