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Add logic to clear out previous ETAs

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Brendan Chen
2025-11-13 18:35:20 -08:00
parent 2fbc13202d
commit 0cf2a4d2e7
2 changed files with 36 additions and 1 deletions
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19
src/repositories/shuttle/eta/RedisSelfUpdatingETARepository.ts
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@@ -3,7 +3,8 @@ import { BaseRedisETARepository } from "./BaseRedisETARepository";
import { createClient, RedisClientType } from "redis";
import { ShuttleGetterRepository, ShuttleRepositoryEvent, ShuttleStopArrival, ShuttleTravelTimeDataIdentifier, ShuttleTravelTimeDateFilterArguments } from "../ShuttleGetterRepository";
import { REDIS_RECONNECT_INTERVAL } from "../../../environment";
import { IOrderedStop, IShuttle } from "../../../entities/ShuttleRepositoryEntities";
import { IEta, IOrderedStop, IShuttle } from "../../../entities/ShuttleRepositoryEntities";
import { ETARepositoryEvent } from "./ETAGetterRepository";
export class RedisSelfUpdatingETARepository extends BaseRedisETARepository implements SelfUpdatingETARepository {
constructor(
@@ -176,6 +177,11 @@ export class RedisSelfUpdatingETARepository extends BaseRedisETARepository imple
private async handleShuttleWillArriveAtStop(
shuttleArrival: ShuttleStopArrival,
) {
const etas = await this.getEtasForShuttleId(shuttleArrival.shuttleId);
for (const eta of etas) {
await this.removeEtaIfExists(eta.shuttleId, eta.stopId);
}
const lastStopTimestamp = await this.shuttleRepository.getShuttleLastStopArrival(shuttleArrival.shuttleId);
if (lastStopTimestamp) {
// disallow cases where this gets triggered multiple times
@@ -265,4 +271,15 @@ export class RedisSelfUpdatingETARepository extends BaseRedisETARepository imple
}
}
private async removeEtaIfExists(shuttleId: string, stopId: string): Promise<IEta | null> {
const existingEta = await this.getEtaForShuttleAndStopId(shuttleId, stopId);
if (existingEta === null) {
return null;
}
const key = this.createEtaKey(shuttleId, stopId);
await this.redisClient.del(key);
this.emit(ETARepositoryEvent.ETA_REMOVED, existingEta);
return existingEta;
}
}