overleaf/services/web/app/src/Features/Analytics/AnalyticsProxy.js

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const settings = require('settings-sharelatex')
const Errors = require('../Errors/Errors')
const httpProxy = require('express-http-proxy')
const URL = require('url')
module.exports = {
call(basePath) {
if (!settings.apis.analytics) {
return (req, res, next) =>
next(
new Errors.ServiceNotConfiguredError(
'Analytics service not configured'
)
)
}
return httpProxy(settings.apis.analytics.url, {
proxyReqPathResolver(req) {
const requestPath = URL.parse(req.url).path
return `${basePath}${requestPath}`
},
proxyReqOptDecorator(proxyReqOpts, srcReq) {
proxyReqOpts.headers = {} // unset all headers
return proxyReqOpts
}
})
}
}