mirror of
https://github.com/brendan-ch/project-inter-server.git
synced 2026-04-17 16:00:32 +00:00
finish the rename for the data loaders
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@@ -1,64 +0,0 @@
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import { ShuttleGetterSetterRepository } from "../repositories/ShuttleGetterSetterRepository";
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import { ApiBasedRepositoryLoader } from "./ApiBasedRepositoryLoader";
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// Ideas to break this into smaller pieces in the future:
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// Have one repository data loader running for each supported system
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// Each data loader independently updates data based on frequency of usage
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// Notes on this: we only need to reload ETA data frequently
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// Other data can be reloaded periodically
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// Detailed list:
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// - ETA: reload frequently or switch to write-through approach
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// - Shuttles: reload every minute
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// - Routes: reload every few minutes
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// - Stops: reload every few minutes
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// - OrderedStops: reload every few minutes
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// - Systems: reload once a day
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export class TimedApiBasedRepositoryLoader extends ApiBasedRepositoryLoader {
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private shouldBeRunning: boolean = false;
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private timer: any;
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readonly timeout = 10000;
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constructor(
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repository: ShuttleGetterSetterRepository,
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) {
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super(repository);
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this.startFetchDataAndUpdate = this.startFetchDataAndUpdate.bind(this);
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}
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public async start() {
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if (this.shouldBeRunning) {
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console.warn("DataLoader timer is already running");
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return;
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}
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this.shouldBeRunning = true;
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await this.startFetchDataAndUpdate();
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}
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public stop() {
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this.shouldBeRunning = false;
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}
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private async startFetchDataAndUpdate() {
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if (!this.shouldBeRunning) return;
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try {
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await this.fetchAndUpdateSystemData();
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await this.fetchAndUpdateRouteDataForExistingSystemsInRepository();
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await this.fetchAndUpdateStopAndPolylineDataForRoutesInExistingSystemsInRepository();
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await this.fetchAndUpdateShuttleDataForExistingSystemsInRepository();
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// Because ETA method doesn't support pruning yet,
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// add a call to the clear method here
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await this.repository.clearEtaData();
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await this.fetchAndUpdateEtaDataForExistingStopsForSystemsInRepository();
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} catch (e) {
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console.error(e);
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}
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this.timer = setTimeout(this.startFetchDataAndUpdate, this.timeout);
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}
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}
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