Explore: Removes Promise.All from runQueries thunk (#16957)

packages/grafana-ui/src/components/SetInterval/SetInterval.tsx

 import { PureComponent } from 'react';
+import { interval, Subscription, empty, Subject } from 'rxjs';
+import { tap, switchMap } from 'rxjs/operators';
+
 import { stringToMs } from '../../utils/string';
 
 interface Props {
   func: () => any; // TODO
+  loading: boolean;
   interval: string;
 }
 
 export class SetInterval extends PureComponent<Props> {
-  private intervalId = 0;
+  private propsSubject: Subject<Props>;
+  private subscription: Subscription | null;
 
-  componentDidMount() {
-    this.addInterval();
+  constructor(props: Props) {
+    super(props);
+    this.propsSubject = new Subject<Props>();
+    this.subscription = null;
   }
 
-  componentDidUpdate(prevProps: Props) {
-    const { interval } = this.props;
-    if (interval !== prevProps.interval) {
-      this.clearInterval();
-      this.addInterval();
-    }
+  componentDidMount() {
+    this.subscription = this.propsSubject
+      .pipe(
+        switchMap(props => {
+          return props.loading ? empty() : interval(stringToMs(props.interval));
+        }),
+        tap(() => this.props.func())
+      )
+      .subscribe();
+    this.propsSubject.next(this.props);
   }
 
-  componentWillUnmount() {
-    this.clearInterval();
+  componentDidUpdate() {
+    this.propsSubject.next(this.props);
   }
 
-  addInterval = () => {
-    const { func, interval } = this.props;
-
-    if (interval) {
-      func().then(() => {
-        if (interval) {
-          this.intervalId = window.setTimeout(() => {
-            this.addInterval();
-          }, stringToMs(interval));
-        }
-      });
+  componentWillUnmount() {
+    if (this.subscription) {
+      this.subscription.unsubscribe();
     }
-  };
 
-  clearInterval = () => {
-    window.clearTimeout(this.intervalId);
-  };
+    this.propsSubject.unsubscribe();
+  }
 
   render() {
     return null;

public/app/features/explore/ExploreToolbar.tsx

@@ -171,7 +171,7 @@ export class UnConnectedExploreToolbar extends PureComponent<Props, {}> {
                 value={refreshInterval}
                 tooltip="Refresh"
               />
-              {refreshInterval && <SetInterval func={this.onRunQuery} interval={refreshInterval} />}
+              {refreshInterval && <SetInterval func={this.onRunQuery} interval={refreshInterval} loading={loading} />}
             </div>
 
             <div className="explore-toolbar-content-item">

public/app/features/explore/state/actions.ts

@@ -546,7 +546,7 @@ export function queryTransactionSuccess(
 /**
  * Main action to run queries and dispatches sub-actions based on which result viewers are active
  */
-export function runQueries(exploreId: ExploreId, ignoreUIState = false): ThunkResult<Promise<any>> {
+export function runQueries(exploreId: ExploreId, ignoreUIState = false): ThunkResult<void> {
   return (dispatch, getState) => {
     const {
       datasourceInstance,
@@ -563,13 +563,13 @@ export function runQueries(exploreId: ExploreId, ignoreUIState = false): ThunkRe
 
     if (datasourceError) {
       // let's not run any queries if data source is in a faulty state
-      return Promise.resolve();
+      return;
     }
 
     if (!hasNonEmptyQuery(queries)) {
       dispatch(clearQueriesAction({ exploreId }));
       dispatch(stateSave()); // Remember to saves to state and update location
-      return Promise.resolve();
+      return;
     }
 
     // Some datasource's query builders allow per-query interval limits,
@@ -578,46 +578,41 @@ export function runQueries(exploreId: ExploreId, ignoreUIState = false): ThunkRe
 
     dispatch(runQueriesAction({ exploreId }));
     // Keep table queries first since they need to return quickly
-    const tableQueriesPromise =
-      (ignoreUIState || showingTable) && supportsTable
-        ? dispatch(
-            runQueriesForType(
-              exploreId,
-              'Table',
-              {
-                interval,
-                format: 'table',
-                instant: true,
-                valueWithRefId: true,
-              },
-              (data: any[]) => data[0]
-            )
-          )
-        : undefined;
-    const typeQueriesPromise =
-      (ignoreUIState || showingGraph) && supportsGraph
-        ? dispatch(
-            runQueriesForType(
-              exploreId,
-              'Graph',
-              {
-                interval,
-                format: 'time_series',
-                instant: false,
-                maxDataPoints: containerWidth,
-              },
-              makeTimeSeriesList
-            )
-          )
-        : undefined;
-    const logsQueriesPromise =
-      (ignoreUIState || showingLogs) && supportsLogs
-        ? dispatch(runQueriesForType(exploreId, 'Logs', { interval, format: 'logs' }))
-        : undefined;
+    if ((ignoreUIState || showingTable) && supportsTable) {
+      dispatch(
+        runQueriesForType(
+          exploreId,
+          'Table',
+          {
+            interval,
+            format: 'table',
+            instant: true,
+            valueWithRefId: true,
+          },
+          (data: any[]) => data[0]
+        )
+      );
+    }
+    if ((ignoreUIState || showingGraph) && supportsGraph) {
+      dispatch(
+        runQueriesForType(
+          exploreId,
+          'Graph',
+          {
+            interval,
+            format: 'time_series',
+            instant: false,
+            maxDataPoints: containerWidth,
+          },
+          makeTimeSeriesList
+        )
+      );
+    }
+    if ((ignoreUIState || showingLogs) && supportsLogs) {
+      dispatch(runQueriesForType(exploreId, 'Logs', { interval, format: 'logs' }));
+    }
 
     dispatch(stateSave());
-
-    return Promise.all([tableQueriesPromise, typeQueriesPromise, logsQueriesPromise]);
   };
 }
 
@@ -638,7 +633,8 @@ function runQueriesForType(
     const { datasourceInstance, eventBridge, queries, queryIntervals, range, scanning } = getState().explore[exploreId];
     const datasourceId = datasourceInstance.meta.id;
     // Run all queries concurrently
-    const queryPromises = queries.map(async (query, rowIndex) => {
+    for (let rowIndex = 0; rowIndex < queries.length; rowIndex++) {
+      const query = queries[rowIndex];
       const transaction = buildQueryTransaction(
         query,
         rowIndex,
@@ -661,9 +657,7 @@ function runQueriesForType(
         eventBridge.emit('data-error', response);
         dispatch(queryTransactionFailure(exploreId, transaction.id, response, datasourceId));
       }
-    });
-
-    return Promise.all(queryPromises);
+    }
   };
 }