28 lines
845 B
JavaScript
28 lines
845 B
JavaScript
const Profiler = require('../stats/profiler_proxy');
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const debug = require('debug')('windshaft:cartodb:stats');
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const onHeaders = require('on-headers');
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module.exports = function statsMiddleware(options) {
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const { enabled = true, statsClient } = options;
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return function stats(req, res, next) {
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req.profiler = new Profiler({
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statsd_client: statsClient,
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profile: enabled
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});
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onHeaders(res, () => res.set('X-Tiler-Profiler', req.profiler.toJSONString()));
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res.on('finish', () => {
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try {
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// May throw due to dns, see: http://github.com/CartoDB/Windshaft/issues/166
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req.profiler.sendStats();
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} catch (err) {
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debug("error sending profiling stats: " + err);
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}
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});
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next();
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};
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};
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