589 lines
20 KiB
JavaScript
589 lines
20 KiB
JavaScript
const _ = require('underscore');
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const windshaft = require('windshaft');
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const MapConfig = windshaft.model.MapConfig;
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const Datasource = windshaft.model.Datasource;
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const QueryTables = require('cartodb-query-tables');
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const ResourceLocator = require('../models/resource-locator');
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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 NamedMapsCacheEntry = require('../cache/model/named_maps_entry');
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const NamedMapMapConfigProvider = require('../models/mapconfig/provider/named-map-provider');
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const CreateLayergroupMapConfigProvider = require('../models/mapconfig/provider/create-layergroup-provider');
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const LayergroupMetadata = require('../utils/layergroup-metadata');
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/**
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* @param {AuthApi} authApi
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* @param {PgConnection} pgConnection
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* @param {TemplateMaps} templateMaps
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* @param {MapBackend} mapBackend
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* @param metadataBackend
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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 {MapConfigAdapter} mapConfigAdapter
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* @param {StatsBackend} statsBackend
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* @constructor
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*/
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function MapController(prepareContext, pgConnection, templateMaps, mapBackend, metadataBackend,
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surrogateKeysCache, userLimitsApi, layergroupAffectedTables, mapConfigAdapter,
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statsBackend) {
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this.pgConnection = pgConnection;
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this.templateMaps = templateMaps;
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this.mapBackend = mapBackend;
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this.metadataBackend = metadataBackend;
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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.mapConfigAdapter = mapConfigAdapter;
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const resourceLocator = new ResourceLocator(global.environment);
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this.layergroupMetadata = new LayergroupMetadata(resourceLocator);
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this.statsBackend = statsBackend;
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this.prepareContext = prepareContext;
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}
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module.exports = MapController;
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MapController.prototype.register = function(app) {
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const { base_url_mapconfig, base_url_templated } = app;
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const useTemplate = true;
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app.get(base_url_mapconfig, this.composeCreateMapMiddleware());
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app.post(base_url_mapconfig, this.composeCreateMapMiddleware());
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app.get(`${base_url_templated}/:template_id/jsonp`, this.composeCreateMapMiddleware(useTemplate));
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app.post(`${base_url_templated}/:template_id`, this.composeCreateMapMiddleware(useTemplate));
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app.options(app.base_url_mapconfig, cors('Content-Type'));
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};
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MapController.prototype.composeCreateMapMiddleware = function (useTemplate = false) {
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const isTemplateInstantiation = useTemplate;
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const useTemplateHash = useTemplate;
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const includeQuery = !useTemplate;
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const label = useTemplate ? 'NAMED MAP LAYERGROUP' : 'ANONYMOUS LAYERGROUP';
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const addContext = !useTemplate;
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return [
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cors(),
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userMiddleware(),
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allowQueryParams(['aggregation']),
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this.prepareContext,
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initProfiler(isTemplateInstantiation),
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checkJsonContentType(),
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this.getCreateMapMiddlewares(useTemplate),
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incrementMapViewCount(this.metadataBackend),
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augmentLayergroupData(),
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getAffectedTables(this.pgConnection, this.layergroupAffectedTables),
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setCacheChannel(),
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setLastModified(),
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setLastUpdatedTimeToLayergroup(),
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setCacheControl(),
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setLayerStats(this.pgConnection, this.statsBackend),
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setLayergroupIdHeader(this.templateMaps ,useTemplateHash),
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setDataviewsAndWidgetsUrlsToLayergroupMetadata(this.layergroupMetadata),
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setAnalysesMetadataToLayergroup(this.layergroupMetadata, includeQuery),
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setTurboCartoMetadataToLayergroup(this.layergroupMetadata),
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setAggregationMetadataToLayergroup(this.layergroupMetadata),
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setTilejsonMetadataToLayergroup(this.layergroupMetadata),
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setSurrogateKeyHeader(this.surrogateKeysCache),
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sendResponse(),
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augmentError({ label, addContext })
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];
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};
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MapController.prototype.getCreateMapMiddlewares = function (useTemplate) {
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if (useTemplate) {
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return [
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checkInstantiteLayergroup(),
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getTemplate(
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this.templateMaps,
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this.pgConnection,
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this.metadataBackend,
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this.userLimitsApi,
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this.mapConfigAdapter
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),
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instantiateLayergroup(this.mapBackend, this.userLimitsApi)
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];
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}
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return [
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checkCreateLayergroup(),
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prepareAdapterMapConfig(this.mapConfigAdapter),
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createLayergroup (this.mapBackend, this.userLimitsApi)
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];
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};
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function initProfiler (isTemplateInstantiation) {
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const operation = isTemplateInstantiation ? 'instance_template' : 'createmap';
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return function initProfilerMiddleware (req, res, next) {
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req.profiler.start(`windshaft-cartodb.${operation}_${req.method.toLowerCase()}`);
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req.profiler.done(`${operation}.initProfilerMiddleware`);
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next();
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};
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}
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function checkJsonContentType () {
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return function checkJsonContentTypeMiddleware(req, res, next) {
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if (req.method === 'POST' && !req.is('application/json')) {
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return next(new Error('POST data must be of type application/json'));
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}
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req.profiler.done('checkJsonContentTypeMiddleware');
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next();
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};
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}
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function checkInstantiteLayergroup () {
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return function checkInstantiteLayergroupMiddleware(req, res, next) {
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if (req.method === 'GET') {
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const { callback, config } = req.query;
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if (callback === undefined || callback.length === 0) {
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return next(new Error('callback parameter should be present and be a function name'));
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}
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if (config) {
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try {
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req.body = JSON.parse(config);
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} catch(e) {
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return next(new Error('Invalid config parameter, should be a valid JSON'));
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}
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}
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}
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req.profiler.done('checkInstantiteLayergroup');
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return next();
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};
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}
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function checkCreateLayergroup () {
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return function checkCreateLayergroupMiddleware (req, res, next) {
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if (req.method === 'GET') {
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const { config } = res.locals;
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if (!config) {
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return next(new Error('layergroup GET needs a "config" parameter'));
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}
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try {
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req.body = JSON.parse(config);
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} catch (err) {
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return next(err);
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}
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}
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req.profiler.done('checkCreateLayergroup');
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return next();
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};
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}
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function getTemplate (templateMaps, pgConnection, metadataBackend, userLimitsApi, mapConfigAdapter) {
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return function getTemplateMiddleware (req, res, next) {
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const templateParams = req.body;
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const { user } = res.locals;
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const mapconfigProvider = new NamedMapMapConfigProvider(
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templateMaps,
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pgConnection,
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metadataBackend,
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userLimitsApi,
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mapConfigAdapter,
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user,
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req.params.template_id,
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templateParams,
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res.locals.auth_token,
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res.locals
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);
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mapconfigProvider.getMapConfig((err, mapconfig, rendererParams) => {
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req.profiler.done('named.getMapConfig');
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if (err) {
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return next(err);
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}
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res.locals.mapconfig = mapconfig;
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res.locals.rendererParams = rendererParams;
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res.locals.mapconfigProvider = mapconfigProvider;
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next();
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});
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};
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}
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function prepareAdapterMapConfig (mapConfigAdapter) {
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return function prepareAdapterMapConfigMiddleware(req, res, next) {
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const requestMapConfig = req.body;
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const { user, dbhost, dbport, dbname, dbuser, dbpassword, api_key } = res.locals;
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const context = {
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analysisConfiguration: {
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user,
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db: {
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host: dbhost,
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port: dbport,
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dbname: dbname,
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user: dbuser,
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pass: dbpassword
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},
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batch: {
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username: user,
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apiKey: api_key
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}
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}
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};
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mapConfigAdapter.getMapConfig(user, requestMapConfig, res.locals, context, (err, requestMapConfig) => {
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req.profiler.done('anonymous.getMapConfig');
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if (err) {
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return next(err);
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}
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req.body = requestMapConfig;
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res.locals.context = context;
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next();
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});
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};
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}
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function createLayergroup (mapBackend, userLimitsApi) {
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return function createLayergroupMiddleware (req, res, next) {
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const requestMapConfig = req.body;
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const { context, user } = res.locals;
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const datasource = context.datasource || Datasource.EmptyDatasource();
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const mapconfig = new MapConfig(requestMapConfig, datasource);
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const mapconfigProvider =
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new CreateLayergroupMapConfigProvider(mapconfig, user, userLimitsApi, res.locals);
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res.locals.mapconfig = mapconfig;
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res.locals.analysesResults = context.analysesResults;
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mapBackend.createLayergroup(mapconfig, res.locals, mapconfigProvider, (err, layergroup) => {
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req.profiler.done('createLayergroup');
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if (err) {
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return next(err);
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}
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res.locals.layergroup = layergroup;
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next();
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});
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};
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}
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function instantiateLayergroup (mapBackend, userLimitsApi) {
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return function instantiateLayergroupMiddleware (req, res, next) {
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const { user, mapconfig, rendererParams } = res.locals;
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const mapconfigProvider =
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new CreateLayergroupMapConfigProvider(mapconfig, user, userLimitsApi, rendererParams);
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mapBackend.createLayergroup(mapconfig, rendererParams, mapconfigProvider, (err, layergroup) => {
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req.profiler.done('createLayergroup');
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if (err) {
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return next(err);
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}
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res.locals.layergroup = layergroup;
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const { mapconfigProvider } = res.locals;
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res.locals.analysesResults = mapconfigProvider.analysesResults;
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res.locals.template = mapconfigProvider.template;
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res.locals.templateName = mapconfigProvider.getTemplateName();
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res.locals.context = mapconfigProvider.context;
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next();
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});
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};
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}
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function incrementMapViewCount (metadataBackend) {
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return function incrementMapViewCountMiddleware(req, res, next) {
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const { mapconfig, user } = res.locals;
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// Error won't blow up, just be logged.
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metadataBackend.incMapviewCount(user, mapconfig.obj().stat_tag, (err) => {
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req.profiler.done('incMapviewCount');
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if (err) {
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global.logger.log(`ERROR: failed to increment mapview count for user '${user}': ${err.message}`);
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}
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next();
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});
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};
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}
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function augmentLayergroupData () {
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return function augmentLayergroupDataMiddleware (req, res, next) {
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const { layergroup } = res.locals;
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// include in layergroup response the variables in serverMedata
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// those variables are useful to send to the client information
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// about how to reach this server or information about it
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_.extend(layergroup, global.environment.serverMetadata);
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next();
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};
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}
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function getAffectedTables (pgConnection, layergroupAffectedTables) {
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return function getAffectedTablesMiddleware (req, res, next) {
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const { dbname, layergroup, user, mapconfig } = res.locals;
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pgConnection.getConnection(user, (err, connection) => {
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if (err) {
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return next(err);
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}
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const sql = [];
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mapconfig.getLayers().forEach(function(layer) {
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sql.push(layer.options.sql);
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if (layer.options.affected_tables) {
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layer.options.affected_tables.map(function(table) {
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sql.push('SELECT * FROM ' + table + ' LIMIT 0');
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});
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}
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});
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QueryTables.getAffectedTablesFromQuery(connection, sql.join(';'), (err, affectedTables) => {
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req.profiler.done('getAffectedTablesFromQuery');
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if (err) {
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return next(err);
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}
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// feed affected tables cache so it can be reused from, for instance, layergroup controller
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layergroupAffectedTables.set(dbname, layergroup.layergroupId, affectedTables);
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res.locals.affectedTables = affectedTables;
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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 setCacheChannel () {
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return function setCacheChannelMiddleware (req, res, next) {
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const { affectedTables } = res.locals;
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if (req.method === 'GET') {
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res.set('X-Cache-Channel', affectedTables.getCacheChannel());
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}
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next();
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};
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}
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function setLastModified () {
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return function setLastModifiedMiddleware (req, res, next) {
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if (req.method === 'GET') {
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res.set('Last-Modified', (new Date()).toUTCString());
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}
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next();
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};
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}
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function setLastUpdatedTimeToLayergroup () {
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return function setLastUpdatedTimeToLayergroupMiddleware (req, res, next) {
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const { affectedTables, layergroup, analysesResults } = res.locals;
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var lastUpdateTime = affectedTables.getLastUpdatedAt();
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lastUpdateTime = getLastUpdatedTime(analysesResults, lastUpdateTime) || lastUpdateTime;
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// last update for layergroup cache buster
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layergroup.layergroupid = layergroup.layergroupid + ':' + lastUpdateTime;
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layergroup.last_updated = new Date(lastUpdateTime).toISOString();
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next();
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};
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}
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function getLastUpdatedTime(analysesResults, lastUpdateTime) {
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if (!Array.isArray(analysesResults)) {
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return lastUpdateTime;
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}
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return analysesResults.reduce(function(lastUpdateTime, analysis) {
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return analysis.getNodes().reduce(function(lastNodeUpdatedAtTime, node) {
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var nodeUpdatedAtDate = node.getUpdatedAt();
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var nodeUpdatedTimeAt = (nodeUpdatedAtDate && nodeUpdatedAtDate.getTime()) || 0;
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return nodeUpdatedTimeAt > lastNodeUpdatedAtTime ? nodeUpdatedTimeAt : lastNodeUpdatedAtTime;
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}, lastUpdateTime);
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}, lastUpdateTime);
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}
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function setCacheControl () {
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return function setCacheControlMiddleware (req, res, next) {
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if (req.method === 'GET') {
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var ttl = global.environment.varnish.layergroupTtl || 86400;
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res.set('Cache-Control', 'public,max-age='+ttl+',must-revalidate');
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}
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next();
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};
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}
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function setLayerStats (pgConnection, statsBackend) {
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return function setLayerStatsMiddleware(req, res, next) {
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const { user, mapconfig, layergroup } = res.locals;
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pgConnection.getConnection(user, (err, connection) => {
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if (err) {
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return next(err);
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}
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statsBackend.getStats(mapconfig, connection, function(err, layersStats) {
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if (err) {
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return next(err);
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}
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if (layersStats.length > 0) {
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layergroup.metadata.layers.forEach(function (layer, index) {
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layer.meta.stats = layersStats[index];
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});
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}
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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 setLayergroupIdHeader (templateMaps, useTemplateHash) {
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return function setLayergroupIdHeaderMiddleware (req, res, next) {
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const { layergroup, user, template } = res.locals;
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if (useTemplateHash) {
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var templateHash = templateMaps.fingerPrint(template).substring(0, 8);
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layergroup.layergroupid = `${user}@${templateHash}@${layergroup.layergroupid}`;
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}
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res.set('X-Layergroup-Id', layergroup.layergroupid);
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next();
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};
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}
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function setDataviewsAndWidgetsUrlsToLayergroupMetadata (layergroupMetadata) {
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return function setDataviewsAndWidgetsUrlsToLayergroupMetadataMiddleware (req, res, next) {
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const { layergroup, user, mapconfig } = res.locals;
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layergroupMetadata.addDataviewsAndWidgetsUrls(user, layergroup, mapconfig.obj());
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next();
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};
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}
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function setAnalysesMetadataToLayergroup (layergroupMetadata, includeQuery) {
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return function setAnalysesMetadataToLayergroupMiddleware (req, res, next) {
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const { layergroup, user, analysesResults = [] } = res.locals;
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layergroupMetadata.addAnalysesMetadata(user, layergroup, analysesResults, includeQuery);
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next();
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};
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}
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function setTurboCartoMetadataToLayergroup (layergroupMetadata) {
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return function setTurboCartoMetadataToLayergroupMiddleware (req, res, next) {
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const { layergroup, mapconfig, context } = res.locals;
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layergroupMetadata.addTurboCartoContextMetadata(layergroup, mapconfig.obj(), context);
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next();
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};
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}
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function setAggregationMetadataToLayergroup (layergroupMetadata) {
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return function setAggregationMetadataToLayergroupMiddleware (req, res, next) {
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const { layergroup, mapconfig, context } = res.locals;
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layergroupMetadata.addAggregationContextMetadata(layergroup, mapconfig.obj(), context);
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next();
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};
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}
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function setTilejsonMetadataToLayergroup (layergroupMetadata) {
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return function augmentLayergroupTilejsonMiddleware (req, res, next) {
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const { layergroup, user, mapconfig } = res.locals;
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layergroupMetadata.addTileJsonMetadata(layergroup, user, mapconfig);
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next();
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};
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}
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function setSurrogateKeyHeader (surrogateKeysCache) {
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return function setSurrogateKeyHeaderMiddleware(req, res, next) {
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const { affectedTables, user, templateName } = res.locals;
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if (req.method === 'GET' && affectedTables.tables && affectedTables.tables.length > 0) {
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surrogateKeysCache.tag(res, affectedTables);
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}
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if (templateName) {
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surrogateKeysCache.tag(res, new NamedMapsCacheEntry(user, templateName));
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}
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next();
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};
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}
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|
|
function sendResponse () {
|
|
return function sendResponseMiddleware (req, res) {
|
|
req.profiler.done('res');
|
|
const { layergroup } = res.locals;
|
|
|
|
res.status(200);
|
|
|
|
if (req.query && req.query.callback) {
|
|
res.jsonp(layergroup);
|
|
} else {
|
|
res.json(layergroup);
|
|
}
|
|
};
|
|
}
|
|
|
|
function augmentError (options) {
|
|
const { addContext = false, label = 'MAPS CONTROLLER' } = options;
|
|
|
|
return function augmentErrorMiddleware (err, req, res, next) {
|
|
req.profiler.done('error');
|
|
const { mapconfig } = res.locals;
|
|
|
|
if (addContext) {
|
|
err = Number.isFinite(err.layerIndex) ? populateError(err, mapconfig) : err;
|
|
}
|
|
|
|
err.label = label;
|
|
|
|
next(err);
|
|
};
|
|
}
|
|
|
|
function populateError(err, mapConfig) {
|
|
var error = new Error(err.message);
|
|
error.http_status = err.http_status;
|
|
|
|
if (!err.http_status && err.message.indexOf('column "the_geom_webmercator" does not exist') >= 0) {
|
|
error.http_status = 400;
|
|
}
|
|
|
|
error.type = 'layer';
|
|
error.subtype = err.message.indexOf('Postgis Plugin') >= 0 ? 'query' : undefined;
|
|
error.layer = {
|
|
id: mapConfig.getLayerId(err.layerIndex),
|
|
index: err.layerIndex,
|
|
type: mapConfig.layerType(err.layerIndex)
|
|
};
|
|
|
|
return error;
|
|
}
|