486 lines
18 KiB
JavaScript
486 lines
18 KiB
JavaScript
var _ = require('underscore');
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var assert = require('assert');
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var step = require('step');
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var windshaft = require('windshaft');
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var QueryTables = require('cartodb-query-tables');
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var ResourceLocator = require('../models/resource-locator');
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var util = require('util');
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var BaseController = require('./base');
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var cors = require('../middleware/cors');
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var userMiddleware = require('../middleware/user');
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var MapConfig = windshaft.model.MapConfig;
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var Datasource = windshaft.model.Datasource;
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var NamedMapsCacheEntry = require('../cache/model/named_maps_entry');
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var NamedMapMapConfigProvider = require('../models/mapconfig/provider/named-map-provider');
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var CreateLayergroupMapConfigProvider = require('../models/mapconfig/provider/create-layergroup-provider');
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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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BaseController.call(this);
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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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this.resourceLocator = new ResourceLocator(global.environment);
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this.statsBackend = statsBackend;
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this.prepareContext = prepareContext;
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}
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util.inherits(MapController, BaseController);
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module.exports = MapController;
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MapController.prototype.register = function(app) {
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app.get(
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app.base_url_mapconfig,
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cors(),
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userMiddleware,
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this.prepareContext,
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this.createGet.bind(this)
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);
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app.post(
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app.base_url_mapconfig,
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cors(),
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userMiddleware,
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this.prepareContext,
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this.createPost.bind(this)
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);
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app.get(
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app.base_url_templated + '/:template_id/jsonp',
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cors(),
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userMiddleware,
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this.prepareContext,
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this.jsonp.bind(this)
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);
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app.post(
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app.base_url_templated + '/:template_id',
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cors(),
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userMiddleware,
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this.prepareContext,
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this.instantiate.bind(this)
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);
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app.options(app.base_url_mapconfig, cors('Content-Type'));
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};
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MapController.prototype.createGet = function(req, res, next){
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req.profiler.start('windshaft.createmap_get');
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this.create(req, res, function createGet$prepareConfig(req, config) {
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if ( ! config ) {
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throw new Error('layergroup GET needs a "config" parameter');
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}
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return JSON.parse(config);
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}, next);
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};
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MapController.prototype.createPost = function(req, res, next) {
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req.profiler.start('windshaft.createmap_post');
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this.create(req, res, function createPost$prepareConfig(req) {
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if (!req.is('application/json')) {
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throw new Error('layergroup POST data must be of type application/json');
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}
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return req.body;
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}, next);
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};
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MapController.prototype.instantiate = function(req, res, next) {
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req.profiler.start('windshaft-cartodb.instance_template_post');
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this.instantiateTemplate(req, res, function prepareTemplateParams(callback) {
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if (!req.is('application/json')) {
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return callback(new Error('Template POST data must be of type application/json'));
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}
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return callback(null, req.body);
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}, next);
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};
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MapController.prototype.jsonp = function(req, res, next) {
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req.profiler.start('windshaft-cartodb.instance_template_get');
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this.instantiateTemplate(req, res, function prepareJsonTemplateParams(callback) {
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var err = null;
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if ( req.query.callback === undefined || req.query.callback.length === 0) {
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err = new Error('callback parameter should be present and be a function name');
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}
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var templateParams = {};
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if (req.query.config) {
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try {
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templateParams = JSON.parse(req.query.config);
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} catch(e) {
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err = new Error('Invalid config parameter, should be a valid JSON');
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}
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}
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return callback(err, templateParams);
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}, next);
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};
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MapController.prototype.create = function(req, res, prepareConfigFn, next) {
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var self = this;
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var mapConfig;
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var context = {};
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step(
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function prepareConfig () {
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const requestMapConfig = prepareConfigFn(req, res.locals.config);
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return requestMapConfig;
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},
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function prepareAdapterMapConfig(err, requestMapConfig) {
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assert.ifError(err);
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context.analysisConfiguration = {
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user: res.locals.user,
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db: {
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host: res.locals.dbhost,
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port: res.locals.dbport,
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dbname: res.locals.dbname,
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user: res.locals.dbuser,
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pass: res.locals.dbpassword
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},
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batch: {
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username: res.locals.user,
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apiKey: res.locals.api_key
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}
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};
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self.mapConfigAdapter.getMapConfig(res.locals.user, requestMapConfig, res.locals, context, this);
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},
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function createLayergroup(err, requestMapConfig) {
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assert.ifError(err);
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var datasource = context.datasource || Datasource.EmptyDatasource();
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mapConfig = new MapConfig(requestMapConfig, datasource);
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self.mapBackend.createLayergroup(
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mapConfig,
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res.locals,
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new CreateLayergroupMapConfigProvider(mapConfig, res.locals.user, self.userLimitsApi, res.locals),
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this
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);
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},
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function afterLayergroupCreate(err, layergroup) {
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assert.ifError(err);
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self.afterLayergroupCreate(req, res, mapConfig, layergroup, context.analysesResults, this);
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},
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function finish(err, layergroup) {
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if (err) {
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if (Number.isFinite(err.layerIndex)) {
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var error = new Error(err.message);
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error.http_status = err.http_status;
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if (!err.http_status && err.message.indexOf('column "the_geom_webmercator" does not exist') >= 0) {
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error.http_status = 400;
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}
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error.type = 'layer';
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error.subtype = err.message.indexOf('Postgis Plugin') >= 0 ? 'query' : undefined;
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error.layer = {
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id: mapConfig.getLayerId(err.layerIndex),
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index: err.layerIndex,
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type: mapConfig.layerType(err.layerIndex)
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};
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err = error;
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}
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err.label = 'ANONYMOUS LAYERGROUP';
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next(err);
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} else {
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var analysesResults = context.analysesResults || [];
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self.addDataviewsAndWidgetsUrls(res.locals.user, layergroup, mapConfig.obj());
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self.addAnalysesMetadata(res.locals.user, layergroup, analysesResults, true);
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addContextMetadata(layergroup, mapConfig.obj(), context);
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res.set('X-Layergroup-Id', layergroup.layergroupid);
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self.send(req, res, layergroup, 200);
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}
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}
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);
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};
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function addContextMetadata(layergroup, mapConfig, context) {
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if (layergroup.metadata && Array.isArray(layergroup.metadata.layers) && Array.isArray(mapConfig.layers)) {
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layergroup.metadata.layers = layergroup.metadata.layers.map(function(layer, layerIndex) {
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if (context.turboCarto && Array.isArray(context.turboCarto.layers)) {
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layer.meta.cartocss_meta = context.turboCarto.layers[layerIndex];
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}
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return layer;
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});
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}
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}
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MapController.prototype.instantiateTemplate = function(req, res, prepareParamsFn, next) {
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var self = this;
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var cdbuser = res.locals.user;
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var mapConfigProvider;
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var mapConfig;
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step(
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function getTemplateParams() {
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prepareParamsFn(this);
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},
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function getTemplate(err, templateParams) {
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assert.ifError(err);
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mapConfigProvider = new NamedMapMapConfigProvider(
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self.templateMaps,
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self.pgConnection,
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self.metadataBackend,
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self.userLimitsApi,
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self.mapConfigAdapter,
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cdbuser,
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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(this);
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},
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function createLayergroup(err, mapConfig_, rendererParams) {
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assert.ifError(err);
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mapConfig = mapConfig_;
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self.mapBackend.createLayergroup(
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mapConfig, rendererParams,
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new CreateLayergroupMapConfigProvider(mapConfig, cdbuser, self.userLimitsApi, rendererParams),
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this
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);
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},
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function afterLayergroupCreate(err, layergroup) {
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assert.ifError(err);
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self.afterLayergroupCreate(req, res, mapConfig, layergroup,
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mapConfigProvider.analysesResults,
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this);
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},
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function finishTemplateInstantiation(err, layergroup) {
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if (err) {
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err.label = 'NAMED MAP LAYERGROUP';
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next(err);
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} else {
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var templateHash = self.templateMaps.fingerPrint(mapConfigProvider.template).substring(0, 8);
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layergroup.layergroupid = cdbuser + '@' + templateHash + '@' + layergroup.layergroupid;
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var _mapConfig = mapConfig.obj();
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self.addDataviewsAndWidgetsUrls(cdbuser, layergroup, _mapConfig);
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self.addAnalysesMetadata(cdbuser, layergroup, mapConfigProvider.analysesResults);
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addContextMetadata(layergroup, _mapConfig, mapConfigProvider.context);
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res.set('X-Layergroup-Id', layergroup.layergroupid);
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self.surrogateKeysCache.tag(res, new NamedMapsCacheEntry(cdbuser, mapConfigProvider.getTemplateName()));
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self.send(req, res, layergroup, 200);
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}
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}
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);
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};
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MapController.prototype.afterLayergroupCreate =
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function(req, res, mapconfig, layergroup, analysesResults, callback) {
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var self = this;
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var username = res.locals.user;
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var tasksleft = 2; // redis key and affectedTables
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var errors = [];
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var done = function(err) {
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if ( err ) {
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errors.push('' + err);
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}
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if ( ! --tasksleft ) {
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err = errors.length ? new Error(errors.join('\n')) : null;
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callback(err, layergroup);
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}
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};
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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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// Don't wait for the mapview count increment to
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// take place before proceeding. Error will be logged
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// asynchronously
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this.metadataBackend.incMapviewCount(username, mapconfig.obj().stat_tag, function(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 '" + username + "': " + err);
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}
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done();
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});
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var 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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var dbName = res.locals.dbname;
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var layergroupId = layergroup.layergroupid;
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var dbConnection;
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step(
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function getPgConnection() {
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self.pgConnection.getConnection(username, this);
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},
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function getAffectedTablesAndLastUpdatedTime(err, connection) {
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assert.ifError(err);
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dbConnection = connection;
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QueryTables.getAffectedTablesFromQuery(dbConnection, sql.join(';'), this);
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},
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function handleAffectedTablesAndLastUpdatedTime(err, result) {
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req.profiler.done('queryTablesAndLastUpdated');
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assert.ifError(err);
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// feed affected tables cache so it can be reused from, for instance, layergroup controller
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self.layergroupAffectedTables.set(dbName, layergroupId, result);
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var lastUpdateTime = result.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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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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res.set('Last-Modified', (new Date()).toUTCString());
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res.set('X-Cache-Channel', result.getCacheChannel());
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if (result.tables && result.tables.length > 0) {
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self.surrogateKeysCache.tag(res, result);
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}
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}
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return null;
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},
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function fetchLayersStats(err) {
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assert.ifError(err);
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var next = this;
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self.statsBackend.getStats(mapconfig, dbConnection, 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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return next();
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});
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},
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function finish(err) {
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done(err);
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}
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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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MapController.prototype.addAnalysesMetadata = function(username, layergroup, analysesResults, includeQuery) {
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includeQuery = includeQuery || false;
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analysesResults = analysesResults || [];
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layergroup.metadata.analyses = [];
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analysesResults.forEach(function(analysis) {
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var nodes = analysis.getNodes();
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layergroup.metadata.analyses.push({
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nodes: nodes.reduce(function(nodesIdMap, node) {
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if (node.params.id) {
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var nodeResource = layergroup.layergroupid + '/analysis/node/' + node.id();
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var nodeRepr = {
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status: node.getStatus(),
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url: this.resourceLocator.getUrls(username, nodeResource)
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};
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if (includeQuery) {
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nodeRepr.query = node.getQuery();
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}
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if (node.getStatus() === 'failed') {
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nodeRepr.error_message = node.getErrorMessage();
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}
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nodesIdMap[node.params.id] = nodeRepr;
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}
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return nodesIdMap;
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}.bind(this), {})
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});
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}.bind(this));
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};
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// TODO this should take into account several URL patterns
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MapController.prototype.addDataviewsAndWidgetsUrls = function(username, layergroup, mapConfig) {
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this.addDataviewsUrls(username, layergroup, mapConfig);
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this.addWidgetsUrl(username, layergroup, mapConfig);
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};
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MapController.prototype.addDataviewsUrls = function(username, layergroup, mapConfig) {
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layergroup.metadata.dataviews = layergroup.metadata.dataviews || {};
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var dataviews = mapConfig.dataviews || {};
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Object.keys(dataviews).forEach(function(dataviewName) {
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var resource = layergroup.layergroupid + '/dataview/' + dataviewName;
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layergroup.metadata.dataviews[dataviewName] = {
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url: this.resourceLocator.getUrls(username, resource)
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};
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}.bind(this));
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};
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MapController.prototype.addWidgetsUrl = function(username, layergroup, mapConfig) {
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if (layergroup.metadata && Array.isArray(layergroup.metadata.layers) && Array.isArray(mapConfig.layers)) {
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layergroup.metadata.layers = layergroup.metadata.layers.map(function(layer, layerIndex) {
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var mapConfigLayer = mapConfig.layers[layerIndex];
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if (mapConfigLayer.options && mapConfigLayer.options.widgets) {
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layer.widgets = layer.widgets || {};
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Object.keys(mapConfigLayer.options.widgets).forEach(function(widgetName) {
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var resource = layergroup.layergroupid + '/' + layerIndex + '/widget/' + widgetName;
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layer.widgets[widgetName] = {
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type: mapConfigLayer.options.widgets[widgetName].type,
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url: this.resourceLocator.getUrls(username, resource)
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};
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}.bind(this));
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}
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return layer;
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}.bind(this));
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}
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};
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