PG1204 commented on code in PR #8552: URL: https://github.com/apache/texera/pull/8552#discussion_r4049990130
########## frontend/src/app/workspace/service/heatmap/heatmap-stats-restore.service.ts: ########## @@ -0,0 +1,105 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +import { Injectable } from "@angular/core"; +import { EMPTY, Observable, of } from "rxjs"; +import { catchError, map, switchMap } from "rxjs/operators"; +import { WorkflowExecutionsService } from "../../../dashboard/service/user/workflow-executions/workflow-executions.service"; +import { WorkflowExecutionsEntry } from "../../../dashboard/type/workflow-executions-entry"; +import { WorkflowActionService } from "../workflow-graph/model/workflow-action.service"; +import { WorkflowStatusService } from "../workflow-status/workflow-status.service"; +import { ExecuteWorkflowService } from "../execute-workflow/execute-workflow.service"; +import { isNotInExecution } from "../../types/execute-workflow.interface"; +import { loadPersistedHeatmapView } from "./heatmap-overlay-persistence"; +import { toOperatorRuntimeStatusMap } from "./runtime-statistics-mapper"; + +/** Persisted execution status code for a completed run (EXECUTION_STATUS_CODE). */ +const EXECUTION_COMPLETED_CODE = 3; + +/** + * Restores the last execution's per-operator statistics after a page refresh, + * so the performance heat-map can render a finished run without re-executing. + * + * All gating lives here rather than in the caller: the persisted-overlay check + * is a synchronous localStorage read, so a user who never enabled the overlay + * incurs no fetch at all. + */ +@Injectable({ + providedIn: "root", +}) +export class HeatmapStatsRestoreService { + constructor( + private workflowExecutionsService: WorkflowExecutionsService, + private workflowActionService: WorkflowActionService, + private workflowStatusService: WorkflowStatusService, + private executeWorkflowService: ExecuteWorkflowService + ) {} + + /** + * Fetches the latest run's statistics and feeds them into + * WorkflowStatusService. Cold: nothing happens until subscribed. Skips + * silently (including on HTTP errors — restoring is best-effort) when: + * - the overlay is not persisted on, + * - the workflow has never been saved (no wid), + * - an execution is in progress (the live stream wins), + * - the workflow has no executions or the run left no statistics. + */ + public restoreLatestRunStatistics(): Observable<void> { + if (loadPersistedHeatmapView() === null) { + return EMPTY; + } + const wid = this.workflowActionService.getWorkflowMetadata()?.wid; + if (wid === undefined) { + return EMPTY; + } + if (!isNotInExecution(this.executeWorkflowService.getExecutionState().state)) { + return EMPTY; + } + + return this.workflowExecutionsService.retrieveWorkflowExecutions(wid).pipe( + switchMap(executions => { + const run = this.pickLatestRun(executions); + if (run === undefined) { + return EMPTY; + } + return this.workflowExecutionsService.retrieveWorkflowRuntimeStatistics(wid, run.eId, run.cuId); + }), + map(rows => { Review Comment: Applied. One wrinkle: tap alone passes the rows through, which would widen the return type to Observable<WorkflowRuntimeStatistics[]> and expose a payload no caller wants. So it's tap for the side effect plus map(() => undefined) to keep the Observable<void> contract. Happy to widen the signature instead if you'd rather not have the extra operator. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
