58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
const logger = require('winston');
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const db = require('../models');
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const httpContext = require('express-http-context');
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function logMetricsMiddleware (req, res, next) {
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res.on('finish', () => {
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const userAgent = req.get('user-agent');
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const routePath = httpContext.get('routePath');
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let referrer = req.get('referrer');
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if (referrer && referrer.length > 255) {
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try {
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// Attempt to "safely" clamp long URLs
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referrer = /(.*?)#.*/.exec(referrer)[1];
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} catch (e) {
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// Cheap forced string conversion & clamp
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referrer = String(referrer);
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referrer = referrer.substr(0, 255);
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}
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if (referrer.length > 255) {
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logger.warn('Request refferer exceeds 255 characters:', referrer);
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referrer = referrer.substring(0, 255);
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}
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}
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db.Metrics.create({
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time : Date.now(),
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isInternal: /node-fetch/.test(userAgent),
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isChannel : res.isChannel,
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claimId : res.claimId,
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routePath : httpContext.get('routePath'),
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params : JSON.stringify(req.params),
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ip : req.headers['x-forwarded-for'] || req.connection.remoteAddress,
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request : req.url,
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routeData : JSON.stringify(httpContext.get('routeData')),
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referrer,
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userAgent,
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});
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});
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next();
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}
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function setRouteDataInContextMiddleware (routePath, routeData) {
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return function (req, res, next) {
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httpContext.set('routePath', routePath);
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httpContext.set('routeData', routeData);
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next();
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};
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}
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module.exports = {
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logMetricsMiddleware,
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setRouteDataInContextMiddleware,
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};
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