feat: Fall back to retrieve logs from live pods (argoproj#12024)

Signed-off-by: Yuan Tang <[email protected]>

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

@@ -202,6 +202,7 @@ export class WorkflowsService {
 
     public getContainerLogs(workflow: Workflow, podName: string, nodeId: string, container: string, grep: string, archived: boolean): Observable<LogEntry> {
         const getLogsFromArtifact = () => this.getContainerLogsFromArtifact(workflow, nodeId, container, grep, archived);
+        const getLogsFromCluster = () => this.getContainerLogsFromCluster(workflow, podName, container, grep);
 
         // If our workflow is archived, don't even bother inspecting the cluster for logs since it's likely
         // that the Workflow and associated pods have been deleted
@@ -213,9 +214,9 @@ export class WorkflowsService {
         return from(this.isWorkflowNodePendingOrRunning(workflow, nodeId)).pipe(
             switchMap(isPendingOrRunning => {
                 if (!isPendingOrRunning && this.hasArtifactLogs(workflow, nodeId, container) && container === 'main') {
-                    return getLogsFromArtifact();
+                    return getLogsFromArtifact().pipe(catchError(getLogsFromCluster));
                 }
-                return this.getContainerLogsFromCluster(workflow, podName, container, grep).pipe(catchError(getLogsFromArtifact));
+                return getLogsFromCluster().pipe(catchError(getLogsFromArtifact));
             })
         );
     }