Display busy spinner when running the indexing build

pkg/nuclide-rust/lib/BuckIntegration.js

@@ -9,6 +9,7 @@
  * @format
  */
 
+import type {BusySignalService, BusySignalOptions} from 'atom-ide-ui';
 import type {TaskInfo} from '../../nuclide-buck/lib/types';
 import type {
   AtomLanguageService,
@@ -31,6 +32,7 @@ const logger = getLogger('nuclide-rust');
 export async function updateRlsBuildForTask(
   task: TaskInfo,
   service: AtomLanguageService<LanguageService>,
+  busySignalService: ?BusySignalService,
 ) {
   const buildTarget = normalizeNameForBuckQuery(task.buildTarget);
 
@@ -73,13 +75,19 @@ export async function updateRlsBuildForTask(
   // can't just invoke that.
   // Instead, we build now, copy paths to resulting .json analysis artifacts to
   // a temp file and just use `cat $TMPFILE` as a dummy build command.
-  const analysisTargets = await getSaveAnalysisTargets(
-    task.buckRoot,
-    buildTarget,
+  const doSaveAnalysisBuild = () =>
+    getSaveAnalysisTargets(task.buckRoot, buildTarget).then(analysisTargets => {
+      logger.debug(`analysisTargets: ${analysisTargets.join('\n')}`);
+
+      return BuckService.build(task.buckRoot, analysisTargets);
+    });
+
+  const buildReport = await reportBusyWhile(
+    busySignalService,
+    '[nuclide-rust] Indexing...',
+    doSaveAnalysisBuild,
   );
-  logger.debug(`analysisTargets: ${analysisTargets.join('\n')}`);
 
-  const buildReport = await BuckService.build(task.buckRoot, analysisTargets);
   if (!buildReport.success) {
     atom.notifications.addError('[nuclide-rust] save-analysis build failed');
     return;
@@ -114,3 +122,16 @@ export async function updateRlsBuildForTask(
     },
   });
 }
+
+function reportBusyWhile<T>(
+  busySignalService: ?BusySignalService,
+  title: string,
+  f: () => Promise<T>,
+  options?: BusySignalOptions,
+): Promise<T> {
+  if (busySignalService) {
+    return busySignalService.reportBusyWhile(title, f, options);
+  } else {
+    return f();
+  }
+}

pkg/nuclide-rust/lib/main.js

@@ -10,6 +10,7 @@
  */
 
 import type {BuckTaskRunnerService} from '../../nuclide-buck/lib/types';
+import type {BusySignalService} from 'atom-ide-ui';
 import type {
   AtomLanguageService,
   LanguageService,
@@ -28,6 +29,7 @@ the target you plan on working using Buck toolbar.`;
 class Activation {
   _rustLanguageService: AtomLanguageService<LanguageService>;
   _subscriptions: UniversalDisposable;
+  _busySignalService: ?BusySignalService;
 
   constructor(rawState: ?Object) {
     atom.notifications.addInfo(DISCLAIMER);
@@ -40,10 +42,21 @@ class Activation {
 
   consumeBuckTaskRunner(service: BuckTaskRunnerService): IDisposable {
     return service.onDidCompleteTask(task =>
-      updateRlsBuildForTask(task, this._rustLanguageService),
+      updateRlsBuildForTask(
+        task,
+        this._rustLanguageService,
+        this._busySignalService,
+      ),
     );
   }
 
+  consumeBusySignal(busySignalService: BusySignalService): IDisposable {
+    this._busySignalService = busySignalService;
+    return new UniversalDisposable(() => {
+      this._busySignalService = null;
+    });
+  }
+
   dispose(): void {
     this._subscriptions.dispose();
   }

pkg/nuclide-rust/package.json

@@ -26,6 +26,11 @@
     "language-rust:grammar-used"
   ],
   "consumedServices": {
+    "atom-ide-busy-signal": {
+      "versions": {
+        "0.1.0": "consumeBusySignal"
+      }
+    },
     "nuclide.buck-task-runner": {
       "versions": {
         "0.0.0": "consumeBuckTaskRunner"