Simplify folder structure

2019-10-07 09:40:50 +02:00
parent 0d638e6bad
commit 281a079a62
221 changed files with 175 additions and 175 deletions
@@ -0,0 +1,152 @@
+'use strict';
+
+const layergroupToken = require('../middlewares/layergroup-token');
+const coordinates = require('../middlewares/coordinates');
+const cleanUpQueryParams = require('../middlewares/clean-up-query-params');
+const credentials = require('../middlewares/credentials');
+const noop = require('../middlewares/noop');
+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');
+const checkStaticImageFormat = require('../middlewares/check-static-image-format');
+
+module.exports = class PreviewLayergroupController {
+    constructor (
+        previewBackend,
+        pgConnection,
+        mapStore,
+        userLimitsBackend,
+        layergroupAffectedTablesCache,
+        authBackend,
+        surrogateKeysCache
+    ) {
+        this.previewBackend = previewBackend;
+        this.pgConnection = pgConnection;
+        this.mapStore = mapStore;
+        this.userLimitsBackend = userLimitsBackend;
+        this.layergroupAffectedTablesCache = layergroupAffectedTablesCache;
+        this.authBackend = authBackend;
+        this.surrogateKeysCache = surrogateKeysCache;
+    }
+
+    route (mapRouter) {
+        mapRouter.get('/static/center/:token/:z/:lat/:lng/:width/:height.:format', this.middlewares({
+            validateZoom: true,
+            previewType: 'centered'
+        }));
+
+        mapRouter.get('/static/bbox/:token/:west,:south,:east,:north/:width/:height.:format', this.middlewares({
+            validateZoom: false,
+            previewType: 'bbox'
+        }));
+    }
+
+    middlewares ({ validateZoom, previewType }) {
+        const forcedFormat = 'png';
+
+        let getPreviewImage;
+
+        if (previewType === 'centered') {
+            getPreviewImage = getPreviewImageByCenter;
+        }
+
+        if (previewType === 'bbox') {
+            getPreviewImage = getPreviewImageByBoundingBox;
+        }
+
+        return [
+            layergroupToken(),
+            validateZoom ? coordinates({ z: true, x: false, y: false }) : noop(),
+            credentials(),
+            authorize(this.authBackend),
+            dbConnSetup(this.pgConnection),
+            rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.STATIC),
+            cleanUpQueryParams(['layer']),
+            checkStaticImageFormat(),
+            createMapStoreMapConfigProvider(
+                this.mapStore,
+                this.userLimitsBackend,
+                this.pgConnection,
+                this.layergroupAffectedTablesCache,
+                forcedFormat
+            ),
+            getPreviewImage(this.previewBackend),
+            cacheControlHeader(),
+            cacheChannelHeader(),
+            surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
+            lastModifiedHeader()
+        ];
+    }
+};
+
+function getPreviewImageByCenter (previewBackend) {
+    return function getPreviewImageByCenterMiddleware (req, res, next) {
+        const width = +req.params.width;
+        const height = +req.params.height;
+        const zoom = +req.params.z;
+        const center = {
+            lng: +req.params.lng,
+            lat: +req.params.lat
+        };
+
+        const format = req.params.format === 'jpg' ? 'jpeg' : 'png';
+        const { mapConfigProvider } = res.locals;
+        const options = { mapConfigProvider, format, width, height, zoom, center };
+
+        previewBackend.getImage(options, (err, image, stats = {}) => {
+            req.profiler.done(`render-${format}`);
+            req.profiler.add(stats);
+
+            if (err) {
+                err.label = 'STATIC_MAP';
+                return next(err);
+            }
+
+            res.set('Content-Type', `image/${format}`);
+
+            res.statusCode = 200;
+            res.body = image;
+
+            next();
+        });
+    };
+}
+
+function getPreviewImageByBoundingBox (previewBackend) {
+    return function getPreviewImageByBoundingBoxMiddleware (req, res, next) {
+        const width = +req.params.width;
+        const height = +req.params.height;
+        const bbox = {
+            west: +req.params.west,
+            north: +req.params.north,
+            east: +req.params.east,
+            south: +req.params.south
+        };
+        const format = req.params.format === 'jpg' ? 'jpeg' : 'png';
+        const { mapConfigProvider } = res.locals;
+        const options = { mapConfigProvider, format, width, height, bbox };
+
+        previewBackend.getImage(options, (err, image, stats = {}) => {
+            req.profiler.done(`render-${format}`);
+            req.profiler.add(stats);
+
+            if (err) {
+                err.label = 'STATIC_MAP';
+                return next(err);
+            }
+
+            res.set('Content-Type', `image/${format}`);
+
+            res.statusCode = 200;
+            res.body = image;
+
+            next();
+        });
+    };
+}