98 lines
3.2 KiB
JavaScript
98 lines
3.2 KiB
JavaScript
'use strict';
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const coordinates = require('../middlewares/coordinates');
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const cleanUpQueryParams = require('../middlewares/clean-up-query-params');
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const credentials = require('../middlewares/credentials');
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const dbConnSetup = require('../middlewares/db-conn-setup');
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const authorize = require('../middlewares/authorize');
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const namedMapProvider = require('../middlewares/named-map-provider');
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const cacheControlHeader = require('../middlewares/cache-control-header');
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const cacheChannelHeader = require('../middlewares/cache-channel-header');
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const surrogateKeyHeader = require('../middlewares/surrogate-key-header');
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const lastModifiedHeader = require('../middlewares/last-modified-header');
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const vectorError = require('../middlewares/vector-error');
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const rateLimit = require('../middlewares/rate-limit');
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const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
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module.exports = class TileTemplateController {
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constructor (
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namedMapProviderCache,
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tileBackend,
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surrogateKeysCache,
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pgConnection,
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authBackend,
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userLimitsBackend
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) {
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this.namedMapProviderCache = namedMapProviderCache;
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this.tileBackend = tileBackend;
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this.surrogateKeysCache = surrogateKeysCache;
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this.pgConnection = pgConnection;
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this.authBackend = authBackend;
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this.userLimitsBackend = userLimitsBackend;
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}
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route (templateRouter) {
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templateRouter.get('/:template_id/:layer/:z/:x/:y.(:format)', this.middlewares());
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}
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middlewares () {
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return [
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coordinates(),
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credentials(),
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authorize(this.authBackend),
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dbConnSetup(this.pgConnection),
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rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.NAMED_TILES),
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cleanUpQueryParams(),
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namedMapProvider({
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namedMapProviderCache: this.namedMapProviderCache,
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label: 'NAMED_MAP_TILE'
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}),
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getTile({
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tileBackend: this.tileBackend,
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label: 'NAMED_MAP_TILE'
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}),
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setContentTypeHeader(),
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cacheControlHeader(),
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cacheChannelHeader(),
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surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
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lastModifiedHeader(),
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vectorError()
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];
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}
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};
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function getTile ({ tileBackend, label }) {
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return function getTileMiddleware (req, res, next) {
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const { mapConfigProvider } = res.locals;
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const { layer, z, x, y, format } = req.params;
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const params = { layer, z, x, y, format };
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tileBackend.getTile(mapConfigProvider, params, (err, tile, headers, stats) => {
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req.profiler.add(stats);
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req.profiler.done('render-' + format);
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if (err) {
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err.label = label;
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return next(err);
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}
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if (headers) {
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res.set(headers);
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}
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res.statusCode = 200;
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res.body = tile;
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next();
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});
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};
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}
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function setContentTypeHeader () {
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return function setContentTypeHeaderMiddleware (req, res, next) {
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res.set('Content-Type', res.get('content-type') || res.get('Content-Type') || 'image/png');
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next();
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};
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}
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