Josep Piguillem
e14f445e6b
Services run commands through a CommandRunner that runs one again (up to 5 times, waiting a little longer each time) when its aggregate changed underneath, e.g. a saga writing to the same ticket. Each command loads its aggregate fresh and stores its events in one transaction, so a ConcurrencyError means nothing was stored and running it again is safe. People no longer get a 409 for it, and the e2e suite stops flaking. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
38 lines
1.2 KiB
TypeScript
38 lines
1.2 KiB
TypeScript
import { CommandRunner } from '@task-stream/api/shared/application';
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import { Injectable } from '@nestjs/common';
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import { QueryBus } from '@nestjs/cqrs';
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import {
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CreateCalendarFeedCommand,
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GetCalendarIcsQuery,
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GetMyCalendarFeedQuery,
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RevokeCalendarFeedCommand,
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} from './calendar/calendar';
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import { CalendarFeed } from './ports/calendar-feeds.repository';
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/** A person's calendar subscription (iCalendar), behind a secret URL. */
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@Injectable()
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export class CalendarService {
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constructor(
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private readonly commands: CommandRunner,
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private readonly queryBus: QueryBus,
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) {}
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mine(userId: string): Promise<CalendarFeed | null> {
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return this.queryBus.execute(new GetMyCalendarFeedQuery(userId));
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}
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/** A new secret URL; the previous one, if any, stops working. */
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create(userId: string): Promise<CalendarFeed> {
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return this.commands.execute(new CreateCalendarFeedCommand(userId));
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}
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revoke(userId: string): Promise<void> {
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return this.commands.execute(new RevokeCalendarFeedCommand(userId));
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}
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/** The calendar behind `token`, or null if no feed has it. */
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ics(token: string, webUrl: string): Promise<string | null> {
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return this.queryBus.execute(new GetCalendarIcsQuery(token, webUrl));
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}
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}
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