Windshaft-cartodb/lib/api/map/clustered-features-layergroup-controller.js

103 lines
3.5 KiB
JavaScript

'use strict';
const tag = require('../middlewares/tag');
const layergroupToken = require('../middlewares/layergroup-token');
const cleanUpQueryParams = require('../middlewares/clean-up-query-params');
const credentials = require('../middlewares/credentials');
const dbConnSetup = require('../middlewares/db-conn-setup');
const authorize = require('../middlewares/authorize');
const rateLimit = require('../middlewares/rate-limit');
const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
const createMapStoreMapConfigProvider = require('../middlewares/map-store-map-config-provider');
const cacheControlHeader = require('../middlewares/cache-control-header');
const cacheChannelHeader = require('../middlewares/cache-channel-header');
const surrogateKeyHeader = require('../middlewares/surrogate-key-header');
const lastModifiedHeader = require('../middlewares/last-modified-header');
module.exports = class AggregatedFeaturesLayergroupController {
constructor (
clusterBackend,
pgConnection,
mapStore,
userLimitsBackend,
layergroupAffectedTablesCache,
authBackend,
surrogateKeysCache
) {
this.clusterBackend = clusterBackend;
this.pgConnection = pgConnection;
this.mapStore = mapStore;
this.userLimitsBackend = userLimitsBackend;
this.layergroupAffectedTablesCache = layergroupAffectedTablesCache;
this.authBackend = authBackend;
this.surrogateKeysCache = surrogateKeysCache;
}
route (mapRouter) {
mapRouter.get('/:token/:layer/:z/cluster/:clusterId', this.middlewares());
}
middlewares () {
return [
tag({ tags: ['cluster'] }),
layergroupToken(),
credentials(),
authorize(this.authBackend),
dbConnSetup(this.pgConnection),
// TODO: create its rate limit
rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.ATTRIBUTES),
cleanUpQueryParams(['aggregation']),
createMapStoreMapConfigProvider(
this.mapStore,
this.userLimitsBackend,
this.pgConnection,
this.layergroupAffectedTablesCache
),
getClusteredFeatures(this.clusterBackend),
cacheControlHeader(),
cacheChannelHeader(),
surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
lastModifiedHeader()
];
}
};
function getClusteredFeatures (clusterBackend) {
return function getFeatureAttributesMiddleware (req, res, next) {
const { mapConfigProvider } = res.locals;
const { user, token } = res.locals;
const { dbuser, dbname, dbpassword, dbhost, dbport } = res.locals;
const { layer, z: zoom, clusterId } = req.params;
const { aggregation } = req.query;
const params = {
user,
token,
dbuser,
dbname,
dbpassword,
dbhost,
dbport,
layer,
zoom,
clusterId,
aggregation
};
clusterBackend.getClusterFeatures(mapConfigProvider, params, (err, features, stats = {}) => {
req.profiler.add(stats);
if (err) {
err.label = 'GET CLUSTERED FEATURES';
return next(err);
}
res.statusCode = 200;
const { rows, fields } = features;
res.body = { rows, fields };
next();
});
};
}