664 lines
21 KiB
JavaScript
664 lines
21 KiB
JavaScript
const cors = require('../middleware/cors');
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const userMiddleware = require('../middleware/user');
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const allowQueryParams = require('../middleware/allow-query-params');
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const vectorError = require('../middleware/vector-error');
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const rateLimit = require('../middleware/rate-limit');
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const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
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const DataviewBackend = require('../backends/dataview');
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const AnalysisStatusBackend = require('../backends/analysis-status');
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const MapStoreMapConfigProvider = require('../models/mapconfig/provider/map-store-provider');
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const QueryTables = require('cartodb-query-tables');
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const SUPPORTED_FORMATS = {
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grid_json: true,
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json_torque: true,
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torque_json: true,
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png: true,
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png32: true,
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mvt: true
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};
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/**
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* @param {prepareContext} prepareContext
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* @param {PgConnection} pgConnection
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* @param {MapStore} mapStore
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* @param {TileBackend} tileBackend
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* @param {PreviewBackend} previewBackend
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* @param {AttributesBackend} attributesBackend
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* @param {SurrogateKeysCache} surrogateKeysCache
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* @param {UserLimitsApi} userLimitsApi
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* @param {LayergroupAffectedTables} layergroupAffectedTables
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* @param {AnalysisBackend} analysisBackend
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* @constructor
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*/
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function LayergroupController(
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prepareContext,
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pgConnection,
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mapStore,
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tileBackend,
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previewBackend,
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attributesBackend,
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surrogateKeysCache,
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userLimitsApi,
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layergroupAffectedTables,
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analysisBackend
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) {
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this.pgConnection = pgConnection;
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this.mapStore = mapStore;
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this.tileBackend = tileBackend;
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this.previewBackend = previewBackend;
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this.attributesBackend = attributesBackend;
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this.surrogateKeysCache = surrogateKeysCache;
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this.userLimitsApi = userLimitsApi;
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this.layergroupAffectedTables = layergroupAffectedTables;
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this.dataviewBackend = new DataviewBackend(analysisBackend);
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this.analysisStatusBackend = new AnalysisStatusBackend();
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this.prepareContext = prepareContext;
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}
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module.exports = LayergroupController;
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LayergroupController.prototype.register = function(app) {
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const { base_url_mapconfig: basePath } = app;
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app.get(
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`${basePath}/:token/:z/:x/:y@:scale_factor?x.:format`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.TILE),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getTile(this.tileBackend, 'map_tile'),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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incrementSuccessMetrics(global.statsClient),
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sendResponse(),
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incrementErrorMetrics(global.statsClient),
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tileError(),
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vectorError()
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);
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app.get(
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`${basePath}/:token/:z/:x/:y.:format`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.TILE),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getTile(this.tileBackend, 'map_tile'),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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incrementSuccessMetrics(global.statsClient),
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sendResponse(),
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incrementErrorMetrics(global.statsClient),
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tileError(),
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vectorError()
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);
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app.get(
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`${basePath}/:token/:layer/:z/:x/:y.(:format)`,
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distinguishLayergroupFromStaticRoute(),
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.TILE),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getTile(this.tileBackend, 'maplayer_tile'),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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incrementSuccessMetrics(global.statsClient),
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sendResponse(),
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incrementErrorMetrics(global.statsClient),
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tileError(),
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vectorError()
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);
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app.get(
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`${basePath}/:token/:layer/attributes/:fid`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.ATTRIBUTES),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getFeatureAttributes(this.attributesBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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const forcedFormat = 'png';
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app.get(
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`${basePath}/static/center/:token/:z/:lat/:lng/:width/:height.:format`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.STATIC),
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allowQueryParams(['layer']),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi, forcedFormat),
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getPreviewImageByCenter(this.previewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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app.get(
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`${basePath}/static/bbox/:token/:west,:south,:east,:north/:width/:height.:format`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.STATIC),
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allowQueryParams(['layer']),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi, forcedFormat),
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getPreviewImageByBoundingBox(this.previewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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// Undocumented/non-supported API endpoint methods.
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// Use at your own peril.
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const allowedDataviewQueryParams = [
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'filters', // json
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'own_filter', // 0, 1
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'no_filters', // 0, 1
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'bbox', // w,s,e,n
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'start', // number
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'end', // number
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'column_type', // string
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'bins', // number
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'aggregation', //string
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'offset', // number
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'q', // widgets search
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'categories', // number
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];
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app.get(
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`${basePath}/:token/dataview/:dataviewName`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.DATAVIEW),
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allowQueryParams(allowedDataviewQueryParams),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getDataview(this.dataviewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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app.get(
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`${basePath}/:token/:layer/widget/:dataviewName`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.DATAVIEW),
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allowQueryParams(allowedDataviewQueryParams),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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getDataview(this.dataviewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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app.get(
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`${basePath}/:token/dataview/:dataviewName/search`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.DATAVIEW_SEARCH),
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allowQueryParams(allowedDataviewQueryParams),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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dataviewSearch(this.dataviewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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app.get(
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`${basePath}/:token/:layer/widget/:dataviewName/search`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.DATAVIEW_SEARCH),
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allowQueryParams(allowedDataviewQueryParams),
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this.prepareContext,
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createMapStoreMapConfigProvider(this.mapStore, this.userLimitsApi),
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dataviewSearch(this.dataviewBackend),
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setCacheControlHeader(),
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setLastModifiedHeader(),
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getAffectedTables(this.layergroupAffectedTables, this.pgConnection, this.mapStore),
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setCacheChannelHeader(),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse()
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);
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app.get(
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`${basePath}/:token/analysis/node/:nodeId`,
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cors(),
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userMiddleware(),
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rateLimit(this.userLimitsApi, RATE_LIMIT_ENDPOINTS_GROUPS.ANALYSIS),
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this.prepareContext,
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analysisNodeStatus(this.analysisStatusBackend),
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sendResponse()
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);
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};
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function distinguishLayergroupFromStaticRoute () {
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return function distinguishLayergroupFromStaticRouteMiddleware(req, res, next) {
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if (req.params.token === 'static') {
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return next('route');
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}
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next();
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};
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}
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function analysisNodeStatus (analysisStatusBackend) {
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return function analysisNodeStatusMiddleware(req, res, next) {
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analysisStatusBackend.getNodeStatus(res.locals, (err, nodeStatus, stats = {}) => {
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req.profiler.add(stats);
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if (err) {
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err.label = 'GET NODE STATUS';
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return next(err);
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}
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res.set({
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'Cache-Control': 'public,max-age=5',
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'Last-Modified': new Date().toUTCString()
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});
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res.body = nodeStatus;
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next();
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});
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};
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}
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function getRequestParams(locals) {
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const params = Object.assign({}, locals);
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delete params.mapConfigProvider;
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delete params.allowedQueryParams;
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return params;
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}
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function createMapStoreMapConfigProvider (mapStore, userLimitsApi, forcedFormat = null) {
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return function createMapStoreMapConfigProviderMiddleware (req, res, next) {
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const { user } = res.locals;
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const params = getRequestParams(res.locals);
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if (forcedFormat) {
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params.format = forcedFormat;
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params.layer = params.layer || 'all';
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}
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res.locals.mapConfigProvider = new MapStoreMapConfigProvider(mapStore, user, userLimitsApi, params);
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next();
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};
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}
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function getDataview (dataviewBackend) {
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return function getDataviewMiddleware (req, res, next) {
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const { user, mapConfigProvider } = res.locals;
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const params = getRequestParams(res.locals);
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dataviewBackend.getDataview(mapConfigProvider, user, params, (err, dataview, stats = {}) => {
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req.profiler.add(stats);
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if (err) {
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err.label = 'GET DATAVIEW';
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return next(err);
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}
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res.body = dataview;
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next();
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});
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};
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}
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function dataviewSearch (dataviewBackend) {
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return function dataviewSearchMiddleware (req, res, next) {
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const { user, dataviewName, mapConfigProvider } = res.locals;
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const params = getRequestParams(res.locals);
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dataviewBackend.search(mapConfigProvider, user, dataviewName, params, (err, searchResult, stats = {}) => {
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req.profiler.add(stats);
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if (err) {
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err.label = 'GET DATAVIEW SEARCH';
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return next(err);
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}
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res.body = searchResult;
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next();
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});
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};
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}
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function getFeatureAttributes (attributesBackend) {
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return function getFeatureAttributesMiddleware (req, res, next) {
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req.profiler.start('windshaft.maplayer_attribute');
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const { mapConfigProvider } = res.locals;
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const params = getRequestParams(res.locals);
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attributesBackend.getFeatureAttributes(mapConfigProvider, params, false, (err, tile, stats = {}) => {
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req.profiler.add(stats);
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if (err) {
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err.label = 'GET ATTRIBUTES';
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return next(err);
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}
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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 getStatusCode(tile, format){
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return tile.length === 0 && format === 'mvt'? 204 : 200;
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}
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function parseFormat (format = '') {
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const prettyFormat = format.replace('.', '_');
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return SUPPORTED_FORMATS[prettyFormat] ? prettyFormat : 'invalid';
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}
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function getTile (tileBackend, profileLabel = 'tile') {
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return function getTileMiddleware (req, res, next) {
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req.profiler.start(`windshaft.${profileLabel}`);
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const { mapConfigProvider } = res.locals;
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const params = getRequestParams(res.locals);
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tileBackend.getTile(mapConfigProvider, params, (err, tile, headers, stats = {}) => {
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req.profiler.add(stats);
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if (err) {
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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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const formatStat = parseFormat(req.params.format);
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res.statusCode = getStatusCode(tile, formatStat);
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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 getPreviewImageByCenter (previewBackend) {
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return function getPreviewImageByCenterMiddleware (req, res, next) {
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const width = +req.params.width;
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const height = +req.params.height;
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const zoom = +req.params.z;
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const center = {
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lng: +req.params.lng,
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lat: +req.params.lat
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};
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const format = req.params.format === 'jpg' ? 'jpeg' : 'png';
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const { mapConfigProvider: provider } = res.locals;
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previewBackend.getImage(provider, format, width, height, zoom, center, (err, image, headers, stats = {}) => {
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req.profiler.done(`render-${format}`);
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req.profiler.add(stats);
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if (err) {
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err.label = 'STATIC_MAP';
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return next(err);
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}
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if (headers) {
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res.set(headers);
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}
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res.set('Content-Type', headers['Content-Type'] || `image/${format}`);
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res.body = image;
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next();
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});
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};
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}
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function getPreviewImageByBoundingBox (previewBackend) {
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return function getPreviewImageByBoundingBoxMiddleware (req, res, next) {
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const width = +req.params.width;
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const height = +req.params.height;
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const bounds = {
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west: +req.params.west,
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north: +req.params.north,
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east: +req.params.east,
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south: +req.params.south
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};
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const format = req.params.format === 'jpg' ? 'jpeg' : 'png';
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const { mapConfigProvider: provider } = res.locals;
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previewBackend.getImage(provider, format, width, height, bounds, (err, image, headers, stats = {}) => {
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req.profiler.done(`render-${format}`);
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req.profiler.add(stats);
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if (err) {
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err.label = 'STATIC_MAP';
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return next(err);
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}
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if (headers) {
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res.set(headers);
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}
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res.set('Content-Type', headers['Content-Type'] || `image/${format}`);
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res.body = image;
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next();
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});
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};
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}
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|
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function setLastModifiedHeader () {
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return function setLastModifiedHeaderMiddleware (req, res, next) {
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let { cache_buster: cacheBuster } = res.locals;
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cacheBuster = parseInt(cacheBuster, 10);
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const lastUpdated = res.locals.cache_buster ? new Date(cacheBuster) : new Date();
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res.set('Last-Modified', lastUpdated.toUTCString());
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next();
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};
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}
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|
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function setCacheControlHeader () {
|
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return function setCacheControlHeaderMiddleware (req, res, next) {
|
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res.set('Cache-Control', 'public,max-age=31536000');
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next();
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};
|
|
}
|
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|
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function getAffectedTables (layergroupAffectedTables, pgConnection, mapStore) {
|
|
return function getAffectedTablesMiddleware (req, res, next) {
|
|
const { user, dbname, token } = res.locals;
|
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|
|
if (layergroupAffectedTables.hasAffectedTables(dbname, token)) {
|
|
res.locals.affectedTables = layergroupAffectedTables.get(dbname, token);
|
|
return next();
|
|
}
|
|
|
|
mapStore.load(token, (err, mapconfig) => {
|
|
if (err) {
|
|
global.logger.warn('ERROR generating cache channel:', err);
|
|
return next();
|
|
}
|
|
|
|
const queries = [];
|
|
mapconfig.getLayers().forEach(function(layer) {
|
|
queries.push(layer.options.sql);
|
|
if (layer.options.affected_tables) {
|
|
layer.options.affected_tables.map(function(table) {
|
|
queries.push(`SELECT * FROM ${table} LIMIT 0`);
|
|
});
|
|
}
|
|
});
|
|
|
|
const sql = queries.length ? queries.join(';') : null;
|
|
|
|
if (!sql) {
|
|
global.logger.warn('ERROR generating cache channel:' +
|
|
' this request doesn\'t need an X-Cache-Channel generated');
|
|
return next();
|
|
}
|
|
|
|
pgConnection.getConnection(user, (err, connection) => {
|
|
if (err) {
|
|
global.logger.warn('ERROR generating cache channel:', err);
|
|
return next();
|
|
}
|
|
|
|
QueryTables.getAffectedTablesFromQuery(connection, sql, (err, affectedTables) => {
|
|
req.profiler.done('getAffectedTablesFromQuery');
|
|
if (err) {
|
|
global.logger.warn('ERROR generating cache channel: ', err);
|
|
return next();
|
|
}
|
|
|
|
// feed affected tables cache so it can be reused from, for instance, map controller
|
|
layergroupAffectedTables.set(dbname, token, affectedTables);
|
|
|
|
res.locals.affectedTables = affectedTables;
|
|
|
|
next();
|
|
});
|
|
});
|
|
});
|
|
};
|
|
}
|
|
|
|
function setCacheChannelHeader () {
|
|
return function setCacheChannelHeaderMiddleware (req, res, next) {
|
|
const { affectedTables } = res.locals;
|
|
|
|
if (affectedTables) {
|
|
res.set('X-Cache-Channel', affectedTables.getCacheChannel());
|
|
}
|
|
|
|
next();
|
|
};
|
|
}
|
|
|
|
function setSurrogateKeyHeader (surrogateKeysCache) {
|
|
return function setSurrogateKeyHeaderMiddleware (req, res, next) {
|
|
const { affectedTables } = res.locals;
|
|
|
|
if (affectedTables) {
|
|
surrogateKeysCache.tag(res, affectedTables);
|
|
}
|
|
|
|
next();
|
|
};
|
|
}
|
|
|
|
function incrementSuccessMetrics (statsClient) {
|
|
return function incrementSuccessMetricsMiddleware (req, res, next) {
|
|
const formatStat = parseFormat(req.params.format);
|
|
|
|
statsClient.increment('windshaft.tiles.success');
|
|
statsClient.increment(`windshaft.tiles.${formatStat}.success`);
|
|
|
|
next();
|
|
};
|
|
}
|
|
|
|
function sendResponse () {
|
|
return function sendResponseMiddleware (req, res) {
|
|
req.profiler.done('res');
|
|
|
|
res.status(res.statusCode || 200);
|
|
|
|
if (!Buffer.isBuffer(res.body) && typeof res.body === 'object') {
|
|
if (req.query && req.query.callback) {
|
|
res.jsonp(res.body);
|
|
} else {
|
|
res.json(res.body);
|
|
}
|
|
} else {
|
|
res.send(res.body);
|
|
}
|
|
};
|
|
}
|
|
|
|
function incrementErrorMetrics (statsClient) {
|
|
return function incrementErrorMetricsMiddleware (err, req, res, next) {
|
|
const formatStat = parseFormat(req.params.format);
|
|
|
|
statsClient.increment('windshaft.tiles.error');
|
|
statsClient.increment(`windshaft.tiles.${formatStat}.error`);
|
|
|
|
next(err);
|
|
};
|
|
}
|
|
|
|
function tileError () {
|
|
return function tileErrorMiddleware (err, req, res, next) {
|
|
// See https://github.com/Vizzuality/Windshaft-cartodb/issues/68
|
|
let errMsg = err.message ? ( '' + err.message ) : ( '' + err );
|
|
|
|
// Rewrite mapnik parsing errors to start with layer number
|
|
const matches = errMsg.match("(.*) in style 'layer([0-9]+)'");
|
|
|
|
if (matches) {
|
|
errMsg = `style${matches[2]}: ${matches[1]}`;
|
|
}
|
|
|
|
err.message = errMsg;
|
|
err.label = 'TILE RENDER';
|
|
|
|
next(err);
|
|
};
|
|
}
|