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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { Request, Response, NextFunction } from 'express';
import { Logger } from '../../utils/logger.js';
import { QueueEnum } from '../../types/QueueEnum.js';
import { QueueHandler } from '../../queue/queueHandler.js';
import {
ServiceFactory,
ClassName,
TicketService,
RequestService,
IdempotencyService,
} from '../../service/serviceFactory.js';
import { InputNumber } from './input.schema.js';
const RABBIT_URL = process.env.RABBIT_URL || 'amqp://localhost:5672';
const queueHandler = new QueueHandler(RABBIT_URL);
type TicketResponse = {
ticket: number;
};
const input = async (req: Request, res: Response, next: NextFunction) => {
try {
const { number: inputNumber } = req.body as InputNumber;
const ipAddress = req.ip;
const userAgent = req.headers['user-agent'] || 'Unknown';
const idempotencyKey = `${ipAddress}-${userAgent}-${inputNumber}`;
const idempotencyService = await ServiceFactory.getInstanceOfClass<IdempotencyService>(
ClassName.IdempotencyService,
);
const cachedResponse = await idempotencyService.getIdempotency<{
responseStatus: number;
responseBody: TicketResponse;
}>(idempotencyKey);
if (cachedResponse) {
Logger.log(`Returning cached response for idempotency key: ${idempotencyKey}`);
res.status(cachedResponse.responseStatus).json(cachedResponse.responseBody);
return;
}
const ticketService = await ServiceFactory.getInstanceOfClass<TicketService>(ClassName.TicketService);
const ticket = await ticketService.getTicket();
const requestService = await ServiceFactory.getInstanceOfClass<RequestService>(ClassName.RequestService);
await requestService.addRequest(ticket, inputNumber);
await queueHandler.addJobToQueue(QueueEnum.Fibonacci, { ticket, inputNumber });
await idempotencyService.setIdempotency(idempotencyKey, { responseStatus: 200, responseBody: { ticket } });
res.status(200).json({ ticket });
return;
} catch (err) {
next(err);
return;
}
};
export default input;
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