fix(server): Allow field selection for workflow-event endpoint (fixes #3163)

ui/src/app/shared/services/workflows-service.ts

@@ -37,6 +37,16 @@ export class WorkflowsService {
         return requests.loadEventSource(url, true).map(data => JSON.parse(data).result as models.kubernetes.WatchEvent<Workflow>);
     }
 
+    public watchFields(filter: {namespace?: string; name?: string; phases?: Array<string>; labels?: Array<string>}): Observable<models.kubernetes.WatchEvent<Workflow>> {
+        const params = this.queryParams(filter);
+        params.push(
+            `fields=result.object.metadata.name,result.object.metadata.namespace,result.object.status.finishedAt,result.object.status.startedAt,result.object.status.phase`
+        );
+        const url = `api/v1/workflow-events/${filter.namespace || ''}?${params.join('&')}`;
+
+        return requests.loadEventSource(url, true).map(data => JSON.parse(data).result as models.kubernetes.WatchEvent<Workflow>);
+    }
+
     public retry(name: string, namespace: string) {
         return requests.put(`api/v1/workflows/${namespace}/${name}/retry`).then(res => res.body as Workflow);
     }

ui/src/app/workflows/components/workflows-list/workflows-list.tsx

@@ -170,7 +170,7 @@ export class WorkflowsList extends BasePage<RouteComponentProps<any>, State> {
             })
             .then(() => {
                 this.subscription = services.workflows
-                    .watch({namespace: newNamespace, phases: selectedPhases, labels: selectedLabels})
+                    .watchFields({namespace: newNamespace, phases: selectedPhases, labels: selectedLabels})
                     .map(workflowChange => {
                         const workflows = this.state.workflows;
                         if (!workflowChange) {