POC: Added drilldown extension hook

public/app/features/explore/extensions/DrilldownExtensionPoint.tsx

@@ -0,0 +1,64 @@
+import { useCallback, useMemo } from 'react';
+
+import { PluginExtensionPoints, RawTimeRange, getDefaultTimeRange, getTimeZone, locationUtil } from '@grafana/data';
+import { usePluginLinks } from '@grafana/runtime';
+import { DataQuery, TimeZone } from '@grafana/schema';
+
+const QUERYLESS_APPS = [
+  'grafana-pyroscope-app',
+  'grafana-lokiexplore-app',
+  'grafana-exploretraces-app',
+  'grafana-metricsdrilldown-app',
+];
+
+export type PluginExtensionExploreContext = {
+  targets: DataQuery[];
+  timeRange: RawTimeRange;
+  timeZone: TimeZone;
+};
+
+/**
+ * Creates the extension point context for drilldown actions.
+ * @param queries - The data queries to include in the context
+ * @returns The extension point context
+ */
+export function createExtensionPointContext(queries: DataQuery[]): PluginExtensionExploreContext {
+  const range = getDefaultTimeRange();
+  return {
+    targets: queries,
+    timeRange: range.raw,
+    timeZone: getTimeZone(),
+  };
+}
+
+/**
+ * Hook that returns queryless drilldown links and handlers.
+ * @param queries - The data queries to use for the extension point context
+ * @returns An object containing the queryless links and an onClick handler, or null if no links are available
+ */
+export function useDrilldownExtensionPoint(queries: DataQuery[]) {
+  const context = useMemo(() => createExtensionPointContext(queries), [queries]);
+  const { links } = usePluginLinks({
+    extensionPointId: PluginExtensionPoints.ExploreToolbarAction,
+    context: context,
+    limitPerPlugin: 3,
+  });
+  const querylessLinks = useMemo(() => links.filter((link) => QUERYLESS_APPS.includes(link.pluginId)), [links]);
+
+  const onClick = useCallback(() => {
+    if (!querylessLinks.length || !querylessLinks[0].path) {
+      return;
+    }
+    global.open(locationUtil.assureBaseUrl(querylessLinks[0].path), '_blank');
+  }, [querylessLinks]);
+
+  if (!querylessLinks.length) {
+    return null;
+  }
+
+  return {
+    links: querylessLinks,
+    onClick,
+    primaryLink: querylessLinks[0],
+  };
+}