47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
'use strict';
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const EVENT_VERSION = '1';
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function pubSubMetrics (pubSubMetricsBackend) {
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if (!pubSubMetricsBackend.isEnabled()) {
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return function pubSubMetricsDisabledMiddleware (req, res, next) { next(); };
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}
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return function pubSubMetricsMiddleware (req, res, next) {
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const data = getEventData(req, res);
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if (data.event) {
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pubSubMetricsBackend.sendEvent(data.event, data.attributes);
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}
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return next();
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};
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}
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function getEventData (req, res) {
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const event = req.get('Carto-Event');
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const eventSource = req.get('Carto-Event-Source');
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const eventGroupId = req.get('Carto-Event-Group-Id');
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if (!event || !eventSource) {
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return [undefined, undefined];
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}
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const attributes = {
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event_source: eventSource,
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user_id: res.locals.userId,
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response_code: res.statusCode.toString(),
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source_domain: req.hostname,
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event_time: new Date().toISOString(),
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event_version: EVENT_VERSION
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};
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if (eventGroupId) {
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attributes.event_group_id = eventGroupId;
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}
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return { event, attributes };
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}
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module.exports = pubSubMetrics;
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