-import * as express from 'express'
-import * as AsyncLock from 'async-lock'
import { Redis } from '../lib/redis'
-import { logger } from '../helpers/logger'
+import * as apicache from 'apicache'
-const lock = new AsyncLock({ timeout: 5000 })
+// Ensure Redis is initialized
+Redis.Instance.init()
-function cacheRoute (lifetime: number) {
- return async function (req: express.Request, res: express.Response, next: express.NextFunction) {
- const redisKey = Redis.Instance.buildCachedRouteKey(req)
-
- await lock.acquire(redisKey, async (done) => {
- const cached = await Redis.Instance.getCachedRoute(req)
-
- // Not cached
- if (!cached) {
- logger.debug('No cached results for route %s.', req.originalUrl)
-
- const sendSave = res.send.bind(res)
-
- res.send = (body) => {
- if (res.statusCode >= 200 && res.statusCode < 400) {
- const contentType = res.getHeader('content-type').toString()
- Redis.Instance.setCachedRoute(req, body, lifetime, contentType, res.statusCode)
- .then(() => done())
- .catch(err => {
- logger.error('Cannot cache route.', { err })
- return done(err)
- })
- }
-
- return sendSave(body)
- }
-
- return next()
- }
-
- if (cached.contentType) res.contentType(cached.contentType)
-
- if (cached.statusCode) {
- const statusCode = parseInt(cached.statusCode, 10)
- if (!isNaN(statusCode)) res.status(statusCode)
- }
-
- logger.debug('Use cached result for %s.', req.originalUrl)
- res.send(cached.body).end()
-
- return done()
- })
- }
+const options = {
+ redisClient: Redis.Instance.getClient(),
+ appendKey: () => Redis.Instance.getPrefix()
}
+const cacheRoute = apicache.options(options).middleware
+
// ---------------------------------------------------------------------------
export {