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Windshaft-cartodb/lib/api/middlewares/surrogate-key-header.js

34 lines
1.1 KiB

'use strict';
const NamedMapsCacheEntry = require('../../cache/model/named-maps-entry');
const NamedMapMapConfigProvider = require('../../models/mapconfig/provider/named-map-provider');
module.exports = function setSurrogateKeyHeader ({ surrogateKeysCache }) {
return function setSurrogateKeyHeaderMiddleware (req, res, next) {
const { user, mapConfigProvider, logger } = res.locals;
if (mapConfigProvider instanceof NamedMapMapConfigProvider) {
surrogateKeysCache.tag(res, new NamedMapsCacheEntry(user, mapConfigProvider.getTemplateName()));
}
if (req.method !== 'GET') {
return next();
}
mapConfigProvider.getAffectedTables((err, affectedTables) => {
if (err) {
logger.warn({ exception: err }, 'Error generating Surrogate Key Header');
return next();
}
if (!affectedTables || !affectedTables.tables || affectedTables.tables.length === 0) {
return next();
}
surrogateKeysCache.tag(res, affectedTables);
next();
});
};
};