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Marble.js 3.0 - CQRS example
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| // 📄 postOfferFile.effect.ts | |
| const postOffersFile$ = r.pipe( | |
| r.matchPath('/offers/:id/file'), | |
| r.matchType('POST'), | |
| r.useEffect((req$, ctx) => { | |
| const eventBusClient = useContext(EventBusClientToken)(ctx.ask); | |
| return req$.pipe( | |
| validateRequest, | |
| map(req => req.params.id), | |
| tap(id => eventBusClient.emit(OfferCommand.generateOfferFile(id)), | |
| mapTo({ status: HttpStatus.ACCEPTED }), | |
| ); | |
| })); | |
| // 📄 generateOfferFile.effect.ts | |
| const generateOfferFile$: MsgEffect = (event$, ctx) => | |
| event$.pipe( | |
| matchEvent(GenerateOfferFileCommand), | |
| act(eventValidator$(GenerateOfferFileCommand)), | |
| act(event => of(event).pipe( | |
| map(event => event.payload.offerId), | |
| // ... | |
| map(id => OfferFileCreatedEvent.create(id)), | |
| )), | |
| ); | |
| // 📄 sendOffer.effect.ts | |
| const sendOffer$: MsgEffect = (event$, ctx) => | |
| event$.pipe( | |
| matchEvent(OfferFileCreatedEvent), | |
| act(eventValidator$(OfferFileCreatedEvent)), | |
| act(event => of(event).pipe( | |
| map(event => event.payload.offerId), | |
| // ... | |
| map(id => OfferSentEvent.create(id)), | |
| )), | |
| ); |
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