888 lines
31 KiB
JavaScript
888 lines
31 KiB
JavaScript
var _ = require('underscore');
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var Step = require('step');
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var QueryTablesApi = require('./api/query_tables_api');
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var crypto = require('crypto');
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var LZMA = require('lzma').LZMA;
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var TemplateMaps = require('./template_maps.js');
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var MapConfigNamedLayersAdapter = require('./models/mapconfig_named_layers_adapter');
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// This is for backward compatibility with 1.3.3
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if ( _.isUndefined(global.environment.sqlapi.domain) ) {
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// Only use "host" as "domain" if it contains alphanumeric characters
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var host = global.environment.sqlapi.host;
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if ( host && host.match(/[a-zA-Z]/) ) {
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global.environment.sqlapi.domain = host;
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}
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}
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// Whitelist query parameters and attach format
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var REQUEST_QUERY_PARAMS_WHITELIST = [
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'sql',
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'geom_type',
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'cache_buster',
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'cache_policy',
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'callback',
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'interactivity',
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'map_key',
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'api_key',
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'auth_token',
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'style',
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'style_version',
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'style_convert',
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'config',
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'scale_factor'
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];
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module.exports = function(redisPool) {
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redisPool = redisPool
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|| require('redis-mpool')(_.extend(global.environment.redis, {name: 'windshaft:server_options'}));
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var cartoData = require('cartodb-redis')({ pool: redisPool }),
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lzmaWorker = new LZMA(),
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queryTablesApi = new QueryTablesApi();
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var rendererConfig = _.defaults(global.environment.renderer || {}, {
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cache_ttl: 60000, // milliseconds
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metatile: 4,
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bufferSize: 64,
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statsInterval: 60000
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});
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var me = {
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// This is for inline maps and table maps
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base_url: global.environment.base_url_legacy || '/tiles/:table',
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/// @deprecated with Windshaft-0.17.0
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///base_url_notable: '/tiles',
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// This is for Detached maps
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//
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// "maps" is the official, while
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// "tiles/layergroup" is for backward compatibility up to 1.6.x
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//
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base_url_mapconfig: global.environment.base_url_detached || '(?:/maps|/tiles/layergroup)',
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grainstore: {
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map: {
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// TODO: allow to specify in configuration
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srid: 3857
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},
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datasource: global.environment.postgres,
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cachedir: global.environment.millstone.cache_basedir,
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mapnik_version: global.environment.mapnik_version,
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mapnik_tile_format: global.environment.mapnik_tile_format || 'png',
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default_layergroup_ttl: global.environment.mapConfigTTL || 7200,
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gc_prob: 0.01 // @deprecated since Windshaft-1.8.0
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},
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mapnik: {
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poolSize: rendererConfig.poolSize,
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metatile: rendererConfig.metatile,
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bufferSize: rendererConfig.bufferSize
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},
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statsd: global.environment.statsd,
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renderCache: {
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ttl: rendererConfig.cache_ttl,
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statsInterval: rendererConfig.statsInterval
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},
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renderer: {
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http: rendererConfig.http
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},
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redis: global.environment.redis,
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enable_cors: global.environment.enable_cors,
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varnish_host: global.environment.varnish.host,
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varnish_port: global.environment.varnish.port,
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varnish_http_port: global.environment.varnish.http_port,
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varnish_secret: global.environment.varnish.secret,
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varnish_purge_enabled: global.environment.varnish.purge_enabled,
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cache_enabled: global.environment.cache_enabled,
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log_format: global.environment.log_format,
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useProfiler: global.environment.useProfiler
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};
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// Do not send unwatch on release
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// See http://github.com/CartoDB/Windshaft-cartodb/issues/161
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me.redis.unwatchOnRelease = false;
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// Re-use redisPool
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me.redis.pool = redisPool;
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var templateMaps = new TemplateMaps(redisPool, {
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max_user_templates: global.environment.maxUserTemplates
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});
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me.templateMaps = templateMaps;
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var mapConfigNamedLayersAdapter = new MapConfigNamedLayersAdapter(templateMaps);
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/* This whole block is about generating X-Cache-Channel { */
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// TODO: review lifetime of elements of this cache
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// NOTE: by-token indices should only be dropped when
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// the corresponding layegroup is dropped, because
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// we have no SQL after layer creation.
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me.channelCache = {};
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me.buildCacheChannel = function (dbName, tableNames){
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return dbName + ':' + tableNames.join(',');
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};
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me.generateMD5 = function(data){
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var hash = crypto.createHash('md5');
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hash.update(data);
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return hash.digest('hex');
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};
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me.generateCacheChannel = function(app, req, callback){
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// Build channelCache key
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var dbName = req.params.dbname;
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var cacheKey = [ dbName ];
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if ( req.params.token ) cacheKey.push(req.params.token);
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else if ( req.params.sql ) cacheKey.push( me.generateMD5(req.params.sql) );
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cacheKey = cacheKey.join(':');
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var that = this;
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Step (
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function checkCached() {
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if ( me.channelCache.hasOwnProperty(cacheKey) ) {
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callback(null, me.channelCache[cacheKey]);
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return;
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}
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return null;
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},
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function extractSQL(err) {
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if ( err ) throw err;
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if ( req.params.token ) {
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// TODO: cached cache channel for token-based access should
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// be constructed at renderer cache creation time
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// See http://github.com/CartoDB/Windshaft-cartodb/issues/152
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if ( ! app.mapStore ) {
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throw new Error('missing channel cache for token ' + req.params.token);
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}
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var next = this;
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var mapStore = app.mapStore;
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Step(
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function loadFromStore() {
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mapStore.load(req.params.token, this);
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},
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function getSQL(err, mapConfig) {
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if (req.profiler) req.profiler.done('mapStore_load');
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if ( err ) throw err;
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var sql = [];
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_.each(mapConfig.obj().layers, function(lyr) {
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sql.push(lyr.options.sql);
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});
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sql = sql.join(';');
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return sql;
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},
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function finish(err, sql) {
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next(err, sql);
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}
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);
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return;
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}
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if ( ! req.params.sql ) {
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return null; // no sql
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}
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// We have sql, and no token...
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// strip out windshaft/mapnik inserted sql if present
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var sql = req.params.sql.match(/^\((.*)\)\sas\scdbq$/);
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sql = (sql != null) ? sql[1] : req.params.sql;
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return sql;
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},
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function findAffectedTables(err, sql) {
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if ( err ) throw err;
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if ( ! sql ) {
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if ( ! req.params.table ) {
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throw new Error("this request doesn't need an X-Cache-Channel generated");
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}
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return [req.params.table];
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}
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var user, key;
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var next = this;
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Step (
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function findUserKey() {
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if ( req.params.hasOwnProperty('_authorizedBySigner') ) {
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user = req.params._authorizedBySigner;
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cartoData.getUserMapKey(user, this);
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} else {
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user = that.userByReq(req);
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key = req.params.map_key || req.params.api_key;
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return null;
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}
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},
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function getAffected(err, data) {
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if ( err ) throw err;
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if ( data ) {
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if ( req.profiler ) req.profiler.done('getSignerMapKey');
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key = data;
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}
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queryTablesApi.getAffectedTablesInQuery(user, {
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user: req.params.dbuser,
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pass: req.params.dbpass,
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host: req.params.dbhost,
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port: req.params.dbport,
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dbname: req.params.dbname,
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api_key: key
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}, sql, this); // in addCacheChannel
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},
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function finish(err, data) {
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next(err,data);
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}
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);
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},
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function buildCacheChannel(err, tableNames) {
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if ( err ) throw err;
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if (req.profiler && ! req.params.table ) {
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req.profiler.done('affectedTables');
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}
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var dbName = req.params.dbname;
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var cacheChannel = me.buildCacheChannel(dbName,tableNames);
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// store for caching from me.generateCacheChannel
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// (not worth when table was specified in params)
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if ( ! req.params.table ) {
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me.channelCache[cacheKey] = cacheChannel;
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}
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return cacheChannel;
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},
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function finish(err, cacheChannel) {
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callback(err, cacheChannel);
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}
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);
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};
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// Set the cache chanel info to invalidate the cache on the frontend server
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//
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// @param req The request object.
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// The function will have no effect unless req.res exists.
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// It is expected that req.params contains 'table' and 'dbname'
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//
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// @param cb function(err, channel) will be called when ready.
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// the channel parameter will be null if nothing was added
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//
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me.addCacheChannel = function(app, req, cb) {
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// skip non-GET requests, or requests for which there's no response
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if ( req.method != 'GET' || ! req.res ) { cb(null, null); return; }
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if (req.profiler) req.profiler.start('addCacheChannel');
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var res = req.res;
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var cache_policy = req.query.cache_policy;
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if ( req.params.token ) cache_policy = 'persist';
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if ( cache_policy == 'persist' ) {
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res.header('Cache-Control', 'public,max-age=31536000'); // 1 year
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} else {
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var ttl = global.environment.varnish.ttl || 86400;
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res.header('Cache-Control', 'no-cache,max-age='+ttl+',must-revalidate, public');
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}
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// Set Last-Modified header
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var lastUpdated;
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if ( req.params.cache_buster ) {
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// Assuming cache_buster is a timestamp
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// FIXME: store lastModified in the cache channel instead
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lastUpdated = new Date(parseInt(req.params.cache_buster));
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} else {
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lastUpdated = new Date();
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}
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res.header('Last-Modified', lastUpdated.toUTCString());
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me.generateCacheChannel(app, req, function(err, channel){
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if (req.profiler) req.profiler.done('generateCacheChannel');
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if (req.profiler) req.profiler.end();
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if ( ! err ) {
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res.header('X-Cache-Channel', channel);
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cb(null, channel);
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} else {
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console.log('ERROR generating cache channel: ' + ( err.message ? err.message : err ));
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// TODO: evaluate if we should bubble up the error instead
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cb(null, 'ERROR');
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}
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});
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};
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me.beforeLayergroupCreate = function(req, requestMapConfig, callback) {
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mapConfigNamedLayersAdapter.getLayers(this.userByReq(req), requestMapConfig.layers, this, function(err, layers, datasource) {
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if (err) {
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return callback(err);
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}
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if (!datasource.isEmpty()) {
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setContext(req, 'queryTablesApiDatasource', _.find(datasource.layersDbParams, function(layerDbParams) {
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return !!layerDbParams;
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}));
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}
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requestMapConfig.layers = layers;
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return callback(null, requestMapConfig, datasource)
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});
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};
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me.afterLayergroupCreate = function(req, mapconfig, response, callback) {
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var token = response.layergroupid;
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var username = this.userByReq(req);
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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);
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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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var serverMetadata = global.environment.serverMetadata;
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if (serverMetadata) {
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_.extend(response, serverMetadata);
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}
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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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// asyncronously
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cartoData.incMapviewCount(username, mapconfig.stat_tag, function(err) {
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if (req.profiler) req.profiler.done('incMapviewCount');
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if ( err ) console.log("ERROR: failed to increment mapview count for user '" + username + "': " + err);
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done();
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});
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var sql = [];
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_.each(mapconfig.layers, function(lyr) {
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sql.push(lyr.options.sql);
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});
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sql = sql.join(';');
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var dbName = req.params.dbname;
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var usr = this.userByReq(req);
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var key = req.params.map_key || req.params.api_key;
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var cacheKey = dbName + ':' + token;
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Step(
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function getAffectedTablesAndLastUpdatedTime() {
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var queryTablesOpts = {
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user: req.params.dbuser,
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pass: req.params.dbpass,
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host: req.params.dbhost,
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port: req.params.dbport,
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dbname: req.params.dbname,
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api_key: key
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};
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_.extend(queryTablesOpts, getContext(req, 'queryTablesApiDatasource'));
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queryTablesApi.getAffectedTablesAndLastUpdatedTime(usr, queryTablesOpts, sql, this);
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},
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function handleAffectedTablesAndLastUpdatedTime(err, result) {
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if (req.profiler) req.profiler.done('queryTablesAndLastUpdated');
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if ( err ) throw err;
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var cacheChannel = me.buildCacheChannel(dbName, result.affectedTables);
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me.channelCache[cacheKey] = cacheChannel;
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if (req.res && req.method == 'GET') {
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var res = req.res;
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if ( req.query && req.query.cache_policy == 'persist' ) {
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res.header('Cache-Control', 'public,max-age=31536000'); // 1 year
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} else {
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var ttl = global.environment.varnish.layergroupTtl || 86400;
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res.header('Cache-Control', 'public,max-age='+ttl+',must-revalidate');
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}
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res.header('Last-Modified', (new Date()).toUTCString());
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res.header('X-Cache-Channel', cacheChannel);
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}
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// last update for layergroup cache buster
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response.layergroupid = response.layergroupid + ':' + result.lastUpdatedTime;
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response.last_updated = new Date(result.lastUpdatedTime).toISOString();
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return null;
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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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/* X-Cache-Channel generation } */
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me.re_userFromHost = new RegExp(
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global.environment.user_from_host ||
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'^([^\\.]+)\\.' // would extract "strk" from "strk.cartodb.com"
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);
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me.userByReq = function(req) {
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var host = req.headers.host;
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var mat = host.match(this.re_userFromHost);
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if ( ! mat ) {
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console.error("ERROR: user pattern '" + this.re_userFromHost
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+ "' does not match hostname '" + host + "'");
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return;
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}
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// console.log("Matches: "); console.dir(mat);
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if ( ! mat.length === 2 ) {
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console.error("ERROR: pattern '" + this.re_userFromHost
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+ "' gave unexpected matches against '" + host + "': " + mat);
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return;
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}
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return mat[1];
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};
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// Set db authentication parameters to those of the given username
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//
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// @param username the cartodb username, mapped to a database username
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// via CartodbRedis metadata records
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//
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// @param params the parameters to set auth options into
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// added params are: "dbuser" and "dbpassword"
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//
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// @param callback function(err)
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//
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me.setDBAuth = function(username, params, callback) {
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var user_params = {};
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var auth_user = global.environment.postgres_auth_user;
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var auth_pass = global.environment.postgres_auth_pass;
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Step(
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function getId() {
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cartoData.getUserId(username, this);
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},
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function(err, user_id) {
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if (err) throw err;
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user_params['user_id'] = user_id;
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var dbuser = _.template(auth_user, user_params);
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_.extend(params, {dbuser:dbuser});
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// skip looking up user_password if postgres_auth_pass
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// doesn't contain the "user_password" label
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if (!auth_pass || ! auth_pass.match(/\buser_password\b/) ) return null;
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cartoData.getUserDBPass(username, this);
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},
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function(err, user_password) {
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if (err) throw err;
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user_params['user_password'] = user_password;
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if ( auth_pass ) {
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var dbpass = _.template(auth_pass, user_params);
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_.extend(params, {dbpassword:dbpass});
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}
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return true;
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},
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function finish(err) {
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callback(err);
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}
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);
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};
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// Set db connection parameters to those for the given username
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//
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// @param dbowner cartodb username of database owner,
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// mapped to a database username
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// via CartodbRedis metadata records
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//
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// @param params the parameters to set connection options into
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// added params are: "dbname", "dbhost"
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//
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// @param callback function(err)
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//
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me.setDBConn = function(dbowner, params, callback) {
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// Add default database connection parameters
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// if none given
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_.defaults(params, {
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dbuser: global.environment.postgres.user,
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dbpassword: global.environment.postgres.password,
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dbhost: global.environment.postgres.host,
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dbport: global.environment.postgres.port
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});
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Step(
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function getConnectionParams() {
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cartoData.getUserDBConnectionParams(dbowner, this);
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},
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function extendParams(err, dbParams){
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if (err) throw err;
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// we don't want null values or overwrite a non public user
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if (params.dbuser != 'publicuser' || !dbParams.dbuser) {
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delete dbParams.dbuser;
|
|
}
|
|
if ( dbParams ) _.extend(params, dbParams);
|
|
return null;
|
|
},
|
|
function finish(err) {
|
|
callback(err);
|
|
}
|
|
);
|
|
};
|
|
|
|
|
|
// Check if a request is authorized by a signer
|
|
//
|
|
// @param req express request object
|
|
// @param callback function(err, signed_by) signed_by will be
|
|
// null if the request is not signed by anyone
|
|
// or will be a string cartodb username otherwise.
|
|
//
|
|
me.authorizedBySigner = function(req, callback)
|
|
{
|
|
if ( ! req.params.token || ! req.params.signer ) {
|
|
//console.log("No signature provided"); // debugging
|
|
callback(null, null); // no signer requested
|
|
return;
|
|
}
|
|
|
|
var signer = req.params.signer;
|
|
var layergroup_id = req.params.token;
|
|
var auth_token = req.params.auth_token;
|
|
|
|
//console.log("Checking authorization from signer " + signer + " for resource " + layergroup_id + " with auth_token " + auth_token);
|
|
var mapStore = req.app.mapStore;
|
|
if (!mapStore) {
|
|
throw new Error('Unable to retrieve map configuration token');
|
|
}
|
|
|
|
mapStore.load(layergroup_id, function(err, mapConfig) {
|
|
if (err) {
|
|
throw err;
|
|
}
|
|
|
|
var authorized = me.templateMaps.isAuthorized(mapConfig.obj().template, auth_token);
|
|
callback(null, authorized ? signer : null);
|
|
});
|
|
|
|
};
|
|
|
|
// Check if a request is authorized by api_key
|
|
//
|
|
// @param req express request object
|
|
// @param callback function(err, authorized)
|
|
// NOTE: authorized is expected to be 0 or 1 (integer)
|
|
//
|
|
me.authorizedByAPIKey = function(req, callback)
|
|
{
|
|
var givenKey = req.query.api_key || req.query.map_key;
|
|
if ( ! givenKey && req.body ) {
|
|
// check also in request body
|
|
givenKey = req.body.api_key || req.body.map_key;
|
|
}
|
|
if ( ! givenKey ) {
|
|
callback(null, 0); // no api key, no authorization...
|
|
return;
|
|
}
|
|
//console.log("given ApiKey: " + givenKey);
|
|
var user = me.userByReq(req);
|
|
Step(
|
|
function (){
|
|
cartoData.getUserMapKey(user, this);
|
|
},
|
|
function checkApiKey(err, val){
|
|
if (err) throw err;
|
|
return ( val && givenKey == val ) ? 1 : 0;
|
|
},
|
|
function finish(err, authorized) {
|
|
callback(err, authorized);
|
|
}
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Check access authorization
|
|
*
|
|
* @param req - standard req object. Importantly contains table and host information
|
|
* @param callback function(err, allowed) is access allowed not?
|
|
*/
|
|
me.authorize = function(req, callback) {
|
|
var that = this;
|
|
var user = me.userByReq(req);
|
|
|
|
Step(
|
|
function (){
|
|
that.authorizedByAPIKey(req, this);
|
|
},
|
|
function checkApiKey(err, authorized){
|
|
if (req.profiler) req.profiler.done('authorizedByAPIKey');
|
|
if (err) throw err;
|
|
|
|
// if not authorized by api_key, continue
|
|
if (authorized !== 1) {
|
|
// not authorized by api_key,
|
|
// check if authorized by signer
|
|
that.authorizedBySigner(req, this);
|
|
return;
|
|
}
|
|
|
|
_.extend(req.params, { _authorizedByApiKey: true });
|
|
|
|
// authorized by api key, login as the given username and stop
|
|
that.setDBAuth(user, req.params, function(err) {
|
|
callback(err, true); // authorized (or error)
|
|
});
|
|
},
|
|
function checkSignAuthorized(err, signed_by){
|
|
if (err) throw err;
|
|
if (req.profiler) {
|
|
if ( req.params._authorizedByApiKey ) {
|
|
req.profiler.done('setDBAuth');
|
|
} else {
|
|
req.profiler.done('authorizedBySigner');
|
|
}
|
|
}
|
|
|
|
if ( ! signed_by ) {
|
|
// request not authorized by signer.
|
|
|
|
// if table was given, continue to check table privacy
|
|
if ( req.params.table ) return null;
|
|
|
|
// if no signer name was given, let dbparams and
|
|
// PostgreSQL do the rest.
|
|
//
|
|
if ( ! req.params.signer ) {
|
|
callback(null, true); // authorized so far
|
|
return;
|
|
}
|
|
|
|
// if signer name was given, return no authorization
|
|
callback(null, false);
|
|
return;
|
|
}
|
|
|
|
// Authorized by "signed_by" !
|
|
_.extend(req.params, { _authorizedBySigner: signed_by });
|
|
that.setDBAuth(signed_by, req.params, function(err) {
|
|
if (req.profiler) req.profiler.done('setDBAuth');
|
|
callback(err, true); // authorized (or error)
|
|
});
|
|
},
|
|
function getDatabase(err){
|
|
if (err) throw err;
|
|
// NOTE: only used to get to table privacy
|
|
cartoData.getUserDBName(user, this);
|
|
},
|
|
function getPrivacy(err, dbname){
|
|
if (err) throw err;
|
|
if (req.profiler) req.profiler.done('tablePrivacy_getUserDBName');
|
|
cartoData.getTablePrivacy(dbname, req.params.table, this);
|
|
},
|
|
function(err, privacy){
|
|
if (req.profiler) req.profiler.done('getTablePrivacy');
|
|
callback(err, privacy !== "0");
|
|
}
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Whitelist input and get database name & default geometry type from
|
|
* subdomain/user metadata held in CartoDB Redis
|
|
* @param req - standard express request obj. Should have host & table
|
|
* @param callback
|
|
*/
|
|
me.req2params = function(req, callback){
|
|
|
|
if ( req.query.lzma ) {
|
|
|
|
// TODO: check ?
|
|
//console.log("type of req.query.lzma is " + typeof(req.query.lzma));
|
|
|
|
// Decode (from base64)
|
|
var lzma = (new Buffer(req.query.lzma, 'base64').toString('binary')).split('').map(function(c) { return c.charCodeAt(0) - 128 });
|
|
|
|
// Decompress
|
|
lzmaWorker.decompress(
|
|
lzma,
|
|
function(result) {
|
|
if (req.profiler) req.profiler.done('LZMA decompress');
|
|
try {
|
|
delete req.query.lzma;
|
|
_.extend(req.query, JSON.parse(result));
|
|
me.req2params(req, callback);
|
|
} catch (err) {
|
|
callback(new Error('Error parsing lzma as JSON: ' + err));
|
|
}
|
|
},
|
|
function(percent) { // progress
|
|
//console.log("LZMA decompression " + percent + "%");
|
|
}
|
|
);
|
|
return;
|
|
}
|
|
|
|
var bad_query = _.difference(_.keys(req.query), REQUEST_QUERY_PARAMS_WHITELIST);
|
|
|
|
_.each(bad_query, function(key){ delete req.query[key]; });
|
|
req.params = _.extend({}, req.params); // shuffle things as request is a strange array/object
|
|
|
|
var user = me.userByReq(req);
|
|
|
|
if ( req.params.token ) {
|
|
//console.log("Request parameters include token " + req.params.token);
|
|
var tksplit = req.params.token.split(':');
|
|
req.params.token = tksplit[0];
|
|
if ( tksplit.length > 1 ) req.params.cache_buster= tksplit[1];
|
|
tksplit = req.params.token.split('@');
|
|
if ( tksplit.length > 1 ) {
|
|
req.params.signer = tksplit.shift();
|
|
if ( ! req.params.signer ) req.params.signer = user;
|
|
else if ( req.params.signer != user ) {
|
|
var err = new Error('Cannot use map signature of user "' + req.params.signer + '" on database of user "' + user + '"');
|
|
err.http_status = 403;
|
|
callback(err);
|
|
return;
|
|
}
|
|
if ( tksplit.length > 1 ) {
|
|
var template_hash = tksplit.shift(); // unused
|
|
}
|
|
req.params.token = tksplit.shift();
|
|
//console.log("Request for token " + req.params.token + " with signature from " + req.params.signer);
|
|
}
|
|
}
|
|
|
|
// bring all query values onto req.params object
|
|
_.extend(req.params, req.query);
|
|
|
|
// for cartodb, ensure interactivity is cartodb_id or user specified
|
|
req.params.interactivity = req.params.interactivity || 'cartodb_id';
|
|
|
|
var that = this;
|
|
|
|
if (req.profiler) req.profiler.done('req2params.setup');
|
|
|
|
Step(
|
|
function getPrivacy(){
|
|
me.authorize(req, this);
|
|
},
|
|
function gatekeep(err, authorized){
|
|
if (req.profiler) req.profiler.done('authorize');
|
|
if(err) throw err;
|
|
if(!authorized) {
|
|
err = new Error("Sorry, you are unauthorized (permission denied)");
|
|
err.http_status = 403;
|
|
throw err;
|
|
}
|
|
return null;
|
|
},
|
|
function getDatabase(err){
|
|
if(err) throw err;
|
|
that.setDBConn(user, req.params, this);
|
|
},
|
|
function getGeometryType(err){
|
|
if (req.profiler) req.profiler.done('setDBConn');
|
|
if (err) throw err;
|
|
if ( ! req.params.table ) return null;
|
|
cartoData.getTableGeometryType(req.params.dbname, req.params.table, this);
|
|
},
|
|
function finishSetup(err, data){
|
|
if ( err ) { callback(err, req); return; }
|
|
|
|
if (!_.isNull(data))
|
|
_.extend(req.params, {geom_type: data});
|
|
|
|
// Add default database connection parameters
|
|
// if none given
|
|
_.defaults(req.params, {
|
|
dbuser: global.environment.postgres.user,
|
|
dbpassword: global.environment.postgres.password,
|
|
dbhost: global.environment.postgres.host,
|
|
dbport: global.environment.postgres.port
|
|
});
|
|
|
|
callback(null, req);
|
|
}
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Little helper method to get the current list of infowindow variables and return to client
|
|
* @param req
|
|
* @param callback
|
|
*/
|
|
me.getInfowindow = function(req, callback){
|
|
var that = this;
|
|
var user = me.userByReq(req);
|
|
|
|
Step(
|
|
function(){
|
|
// TODO: if this step really needed ?
|
|
that.req2params(req, this);
|
|
},
|
|
function getDatabase(err){
|
|
if (err) throw err;
|
|
cartoData.getUserDBName(user, this);
|
|
},
|
|
function getInfowindow(err, dbname){
|
|
if (err) throw err;
|
|
cartoData.getTableInfowindow(dbname, req.params.table, this);
|
|
},
|
|
function(err, data){
|
|
callback(err, data);
|
|
}
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Little helper method to get map metadata and return to client
|
|
* @param req
|
|
* @param callback
|
|
*/
|
|
me.getMapMetadata = function(req, callback){
|
|
var that = this;
|
|
var user = me.userByReq(req);
|
|
|
|
Step(
|
|
function(){
|
|
// TODO: if this step really needed ?
|
|
that.req2params(req, this);
|
|
},
|
|
function getDatabase(err){
|
|
if (err) throw err;
|
|
cartoData.getUserDBName(user, this);
|
|
},
|
|
function getMapMetadata(err, dbname){
|
|
if (err) throw err;
|
|
cartoData.getTableMapMetadata(dbname, req.params.table, this);
|
|
},
|
|
function(err, data){
|
|
callback(err, data);
|
|
}
|
|
);
|
|
};
|
|
|
|
/*******************************************************************************************************************
|
|
* Private methods
|
|
******************************************************************************************************************/
|
|
|
|
/**
|
|
* Handles context for a given Request object
|
|
* @param {Object|IncomingMessage} req
|
|
* @param {String} key
|
|
* @returns {*}
|
|
*/
|
|
function getContext(req, key) {
|
|
return req.context && req.context[key];
|
|
}
|
|
|
|
/**
|
|
* Handles context for a given Request object
|
|
* @param {Object|IncomingMessage} req
|
|
* @param {String} key
|
|
* @param {*} value
|
|
* @returns {*} The previous value
|
|
*/
|
|
function setContext(req, key, value) {
|
|
var previousValue;
|
|
if (value) {
|
|
req.context = req.context || {};
|
|
previousValue = req.context[key];
|
|
req.context[key] = value;
|
|
}
|
|
return previousValue;
|
|
}
|
|
|
|
return me;
|
|
};
|