672 lines
24 KiB
JavaScript
672 lines
24 KiB
JavaScript
var _ = require('underscore')
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, Step = require('step')
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, Windshaft = require('windshaft')
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, SignedMaps = require('./signed_maps.js')
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, TemplateMaps = require('./template_maps.js')
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, Cache = require('./cache_validator')
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, os = require('os')
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;
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if ( ! process.env['PGAPPNAME'] )
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process.env['PGAPPNAME']='cartodb_tiler';
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var CartodbWindshaft = function(serverOptions) {
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var debug = global.environment.debug;
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// Perform keyword substitution in statsd
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// See https://github.com/CartoDB/Windshaft-cartodb/issues/153
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if ( global.environment.statsd ) {
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if ( global.environment.statsd.prefix ) {
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var host_token = os.hostname().split('.').reverse().join('.');
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global.environment.statsd.prefix = global.environment.statsd.prefix.replace(/:host/, host_token);
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}
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}
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var redisPool = serverOptions.redis.pool
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|| require('redis-mpool')(_.extend(global.environment.redis, {name: 'windshaft:cartodb'}));
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var cartoData = require('cartodb-redis')({pool: redisPool});
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if(serverOptions.cache_enabled) {
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console.log("cache invalidation enabled, varnish on ", serverOptions.varnish_host, ' ', serverOptions.varnish_port);
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Cache.init(serverOptions.varnish_host, serverOptions.varnish_port, serverOptions.varnish_secret);
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serverOptions.afterStateChange = function(req, data, callback) {
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Cache.invalidate_db(req.params.dbname, req.params.table);
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callback(null, data);
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}
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}
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serverOptions.beforeStateChange = function(req, callback) {
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var err = null;
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if ( ! req.params.hasOwnProperty('_authorizedByApiKey') ) {
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err = new Error("map state cannot be changed by unauthenticated request!");
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}
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callback(err, req);
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};
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// This is for Templated maps
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//
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// "named" is the official, "template" is for backward compatibility up to 1.6.x
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//
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var template_baseurl = global.environment.base_url_templated || '(?:/maps/named|/tiles/template)';
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serverOptions.signedMaps = new SignedMaps(redisPool);
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var templateMapsOpts = {
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max_user_templates: global.environment.maxUserTemplates
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};
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var templateMaps = new TemplateMaps(redisPool, serverOptions.signedMaps, templateMapsOpts);
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// boot
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var ws = new Windshaft.Server(serverOptions);
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// Override getVersion to include cartodb-specific versions
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var wsversion = ws.getVersion;
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ws.getVersion = function() {
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var version = wsversion();
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version.windshaft_cartodb = require('../../package.json').version;
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return version;
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};
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var ws_sendResponse = ws.sendResponse;
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// GET routes for which we don't want to request any caching.
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// POST/PUT/DELETE requests are never cached anyway.
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var noCacheGETRoutes = [
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'/',
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// See https://github.com/CartoDB/Windshaft-cartodb/issues/176
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serverOptions.base_url_mapconfig,
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template_baseurl + '/:template_id/jsonp'
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];
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ws.sendResponse = function(res, args) {
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var that = this;
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var thatArgs = arguments;
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var statusCode;
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if ( res._windshaftStatusCode ) {
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// Added by our override of sendError
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statusCode = res._windshaftStatusCode;
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} else {
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if ( args.length > 2 ) statusCode = args[2];
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else {
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statusCode = args[1] || 200;
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}
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}
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var req = res.req;
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Step (
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function addCacheChannel() {
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if ( ! req ) {
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// having no associated request can happen when
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// using fake response objects for testing layergroup
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// creation
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return false;
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}
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if ( ! req.params ) {
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// service requests (/version, /)
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// have no need for an X-Cache-Channel
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return false;
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}
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if ( statusCode != 200 ) {
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// We do not want to cache
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// unsuccessful responses
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return false;
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}
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if ( _.contains(noCacheGETRoutes, req.route.path) ) {
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//console.log("Skipping cache channel in route:\n" + req.route.path);
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return false;
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}
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//console.log("Adding cache channel to route\n" + req.route.path + " not matching any in:\n" + mapCreateRoutes.join("\n"));
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serverOptions.addCacheChannel(that, req, this);
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},
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function sendResponse(err, added) {
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if ( err ) console.log(err + err.stack);
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ws_sendResponse.apply(that, thatArgs);
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return null;
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},
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function finish(err) {
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if ( err ) console.log(err + err.stack);
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}
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);
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};
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var ws_sendError = ws.sendError;
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ws.sendError = function() {
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var res = arguments[0];
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var statusCode = arguments[2];
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res._windshaftStatusCode = statusCode;
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ws_sendError.apply(this, arguments);
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};
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/**
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* Helper to allow access to the layer to be used in the maps infowindow popup.
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*/
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ws.get(serverOptions.base_url + '/infowindow', function(req, res){
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ws.doCORS(res);
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Step(
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function(){
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serverOptions.getInfowindow(req, this);
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},
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function(err, data){
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if (err){
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ws.sendError(res, {error: err.message}, 500, 'GET INFOWINDOW', err);
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//ws.sendResponse(res, [{error: err.message}, 500]);
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} else {
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ws.sendResponse(res, [{infowindow: data}, 200]);
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}
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}
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);
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});
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/**
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* Helper to allow access to metadata to be used in embedded maps.
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*/
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ws.get(serverOptions.base_url + '/map_metadata', function(req, res){
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ws.doCORS(res);
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Step(
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function(){
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serverOptions.getMapMetadata(req, this);
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},
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function(err, data){
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if (err){
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ws.sendError(res, {error: err.message}, 500, 'GET MAP_METADATA', err);
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//ws.sendResponse(res, [err.message, 500]);
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} else {
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ws.sendResponse(res, [{map_metadata: data}, 200]);
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}
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}
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);
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});
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/**
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* Helper API to allow per table tile cache (and sql cache) to be invalidated remotely.
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* TODO: Move?
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*/
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ws.del(serverOptions.base_url + '/flush_cache', function(req, res){
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if ( req.profiler && req.profiler.statsd_client ) {
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req.profiler.start('windshaft-cartodb.flush_cache');
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}
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ws.doCORS(res);
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Step(
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function flushCache(){
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serverOptions.flushCache(req, serverOptions.cache_enabled ? Cache : null, this);
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},
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function sendResponse(err, data){
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if (err){
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ws.sendError(res, {error: err.message}, 500, 'DELETE CACHE', err);
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//ws.sendResponse(res, [500]);
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} else {
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ws.sendResponse(res, [{status: 'ok'}, 200]);
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}
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}
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);
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});
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// ---- Template maps interface starts @{
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ws.userByReq = function(req) {
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return serverOptions.userByReq(req);
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};
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// Add a template
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ws.post(template_baseurl, function(req, res) {
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ws.doCORS(res);
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var that = this;
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var response = {};
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var cdbuser = ws.userByReq(req);
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Step(
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function checkPerms(){
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serverOptions.authorizedByAPIKey(req, this);
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},
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function addTemplate(err, authenticated) {
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if ( err ) throw err;
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if (authenticated !== 1) {
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err = new Error("Only authenticated user can create templated maps");
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err.http_status = 403;
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throw err;
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}
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var next = this;
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if ( ! req.headers['content-type'] || req.headers['content-type'].split(';')[0] != 'application/json' )
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throw new Error('template POST data must be of type application/json');
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var cfg = req.body;
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templateMaps.addTemplate(cdbuser, cfg, this);
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},
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function prepareResponse(err, tpl_id){
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if ( err ) throw err;
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// NOTE: might omit "cdbuser" if == dbowner ...
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return { template_id: cdbuser + '@' + tpl_id };
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},
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function finish(err, response){
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if ( req.profiler ) {
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res.header('X-Tiler-Profiler', req.profiler.toJSONString());
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}
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if (err){
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response = { error: ''+err };
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var statusCode = 400;
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if ( ! _.isUndefined(err.http_status) ) {
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statusCode = err.http_status;
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}
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ws.sendError(res, response, statusCode, 'POST TEMPLATE', err);
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} else {
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ws.sendResponse(res, [response, 200]);
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}
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}
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);
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});
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// Update a template
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ws.put(template_baseurl + '/:template_id', function(req, res) {
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ws.doCORS(res);
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var that = this;
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var response = {};
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var cdbuser = ws.userByReq(req);
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var template;
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var tpl_id;
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Step(
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function checkPerms(){
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serverOptions.authorizedByAPIKey(req, this);
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},
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function updateTemplate(err, authenticated) {
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if ( err ) throw err;
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if (authenticated !== 1) {
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err = new Error("Only authenticated user can list templated maps");
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err.http_status = 403;
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throw err;
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}
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if ( ! req.headers['content-type'] || req.headers['content-type'].split(';')[0] != 'application/json' )
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throw new Error('template PUT data must be of type application/json');
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template = req.body;
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tpl_id = req.params.template_id.split('@');
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if ( tpl_id.length > 1 ) {
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if ( tpl_id[0] != cdbuser ) {
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err = new Error("Invalid template id '"
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+ req.params.template_id + "' for user '" + cdbuser + "'");
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err.http_status = 404;
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throw err;
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}
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tpl_id = tpl_id[1];
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}
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templateMaps.updTemplate(cdbuser, tpl_id, template, this);
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},
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function prepareResponse(err){
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if ( err ) throw err;
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return { template_id: cdbuser + '@' + tpl_id };
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},
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function finish(err, response){
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if ( req.profiler ) {
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res.header('X-Tiler-Profiler', req.profiler.toJSONString());
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}
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if (err){
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var statusCode = 400;
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response = { error: ''+err };
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if ( ! _.isUndefined(err.http_status) ) {
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statusCode = err.http_status;
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}
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ws.sendError(res, response, statusCode, 'PUT TEMPLATE', err);
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} else {
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ws.sendResponse(res, [response, 200]);
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}
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}
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);
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});
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// Get a specific template
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ws.get(template_baseurl + '/:template_id', function(req, res) {
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if ( req.profiler && req.profiler.statsd_client ) {
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req.profiler.start('windshaft-cartodb.get_template');
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}
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ws.doCORS(res);
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var that = this;
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var response = {};
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var cdbuser = ws.userByReq(req);
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var template;
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var tpl_id;
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Step(
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function checkPerms(){
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serverOptions.authorizedByAPIKey(req, this);
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},
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function updateTemplate(err, authenticated) {
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if ( err ) throw err;
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if (authenticated !== 1) {
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err = new Error("Only authenticated users can get template maps");
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err.http_status = 403;
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throw err;
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}
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tpl_id = req.params.template_id.split('@');
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if ( tpl_id.length > 1 ) {
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if ( tpl_id[0] != cdbuser ) {
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var err = new Error("Cannot get template id '"
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+ req.params.template_id + "' for user '" + cdbuser + "'");
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err.http_status = 404;
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throw err;
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}
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tpl_id = tpl_id[1];
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}
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templateMaps.getTemplate(cdbuser, tpl_id, this);
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},
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function prepareResponse(err, tpl_val){
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if ( err ) throw err;
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if ( ! tpl_val ) {
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err = new Error("Cannot find template '" + tpl_id + "' of user '" + cdbuser + "'");
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err.http_status = 404;
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throw err;
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}
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// auth_id was added by ourselves,
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// so we remove it before returning to the user
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delete tpl_val.auth_id;
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return { template: tpl_val };
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},
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function finish(err, response){
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if (err){
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var statusCode = 400;
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response = { error: ''+err };
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if ( ! _.isUndefined(err.http_status) ) {
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statusCode = err.http_status;
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}
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ws.sendError(res, response, statusCode, 'GET TEMPLATE', err);
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} else {
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ws.sendResponse(res, [response, 200]);
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}
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}
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);
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});
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// Delete a specific template
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ws.del(template_baseurl + '/:template_id', function(req, res) {
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if ( req.profiler && req.profiler.statsd_client ) {
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req.profiler.start('windshaft-cartodb.delete_template');
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}
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ws.doCORS(res);
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var that = this;
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var response = {};
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var cdbuser = ws.userByReq(req);
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var template;
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var tpl_id;
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Step(
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function checkPerms(){
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serverOptions.authorizedByAPIKey(req, this);
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},
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function updateTemplate(err, authenticated) {
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if ( err ) throw err;
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if (authenticated !== 1) {
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err = new Error("Only authenticated users can delete template maps");
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err.http_status = 403;
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throw err;
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}
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tpl_id = req.params.template_id.split('@');
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if ( tpl_id.length > 1 ) {
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if ( tpl_id[0] != cdbuser ) {
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var err = new Error("Cannot find template id '"
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+ req.params.template_id + "' for user '" + cdbuser + "'");
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err.http_status = 404;
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throw err;
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}
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tpl_id = tpl_id[1];
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}
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templateMaps.delTemplate(cdbuser, tpl_id, this);
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},
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function prepareResponse(err, tpl_val){
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if ( err ) throw err;
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return { status: 'ok' };
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},
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function finish(err, response){
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if (err){
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var statusCode = 400;
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response = { error: ''+err };
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if ( ! _.isUndefined(err.http_status) ) {
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statusCode = err.http_status;
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}
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ws.sendError(res, response, statusCode, 'DELETE TEMPLATE', err);
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} else {
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ws.sendResponse(res, ['', 204]);
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}
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}
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);
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});
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// Get a list of owned templates
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ws.get(template_baseurl, function(req, res) {
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if ( req.profiler && req.profiler.statsd_client ) {
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req.profiler.start('windshaft-cartodb.get_template_list');
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}
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ws.doCORS(res);
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var that = this;
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var response = {};
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var cdbuser = ws.userByReq(req);
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Step(
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function checkPerms(){
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serverOptions.authorizedByAPIKey(req, this);
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},
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function listTemplates(err, authenticated) {
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if ( err ) throw err;
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if (authenticated !== 1) {
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err = new Error("Only authenticated user can list templated maps");
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err.http_status = 403;
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throw err;
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}
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templateMaps.listTemplates(cdbuser, this);
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},
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function prepareResponse(err, tpl_ids){
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if ( err ) throw err;
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// NOTE: might omit "cbduser" if == dbowner ...
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var ids = _.map(tpl_ids, function(id) { return cdbuser + '@' + id; });
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return { template_ids: ids };
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},
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function finish(err, response){
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var statusCode = 200;
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if (err){
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response = { error: ''+err };
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if ( ! _.isUndefined(err.http_status) ) {
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statusCode = err.http_status;
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}
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ws.sendError(res, response, statusCode, 'GET TEMPLATE LIST', err);
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} else {
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ws.sendResponse(res, [response, statusCode]);
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}
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}
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);
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});
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ws.setDBParams = function(cdbuser, params, callback) {
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Step(
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function setAuth() {
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serverOptions.setDBAuth(cdbuser, params, this);
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},
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function setConn(err) {
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if ( err ) throw err;
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serverOptions.setDBConn(cdbuser, params, this);
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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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ws.options(template_baseurl + '/:template_id', function(req, res) {
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ws.doCORS(res, "Content-Type");
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return next();
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});
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// Instantiate a template
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function instanciateTemplate(req, res, template_params, callback) {
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ws.doCORS(res);
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var that = this;
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var response = {};
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var template;
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var signedMaps = serverOptions.signedMaps;
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var layergroup;
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var layergroupid;
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var fakereq; // used for call to createLayergroup
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var cdbuser = ws.userByReq(req);
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// Format of template_id: [<template_owner>]@<template_id>
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var tpl_id = req.params.template_id.split('@');
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if ( tpl_id.length > 1 ) {
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if ( tpl_id[0] && tpl_id[0] != cdbuser ) {
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var err = new Error('Cannot instanciate map of user "'
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+ tpl_id[0] + '" on database of user "'
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+ cdbuser + '"');
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err.http_status = 403;
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callback(err);
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return;
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}
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tpl_id = tpl_id[1];
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}
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var auth_token = req.query.auth_token;
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Step(
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|
function getTemplate(){
|
|
templateMaps.getTemplate(cdbuser, tpl_id, this);
|
|
},
|
|
function checkAuthorized(err, data) {
|
|
if ( req.profiler ) req.profiler.done('getTemplate');
|
|
if ( err ) throw err;
|
|
if ( ! data ) {
|
|
err = new Error("Template '" + tpl_id + "' of user '" + cdbuser + "' not found");
|
|
err.http_status = 404;
|
|
throw err;
|
|
}
|
|
template = data;
|
|
var cert = templateMaps.getTemplateCertificate(template);
|
|
var authorized = false;
|
|
try {
|
|
// authorizedByCert will throw if unauthorized
|
|
authorized = signedMaps.authorizedByCert(cert, auth_token);
|
|
} catch (err) {
|
|
// we catch to add http_status
|
|
err.http_status = 403;
|
|
throw err;
|
|
}
|
|
if ( ! authorized ) {
|
|
err = new Error('Unauthorized template instanciation');
|
|
err.http_status = 403;
|
|
throw err;
|
|
}
|
|
/*if ( (! req.headers['content-type'] || req.headers['content-type'].split(';')[0] != 'application/json') && req.query.callback === undefined) {
|
|
throw new Error('template POST data must be of type application/json, it is instead ');
|
|
}*/
|
|
//var template_params = req.body;
|
|
if ( req.profiler ) req.profiler.done('authorizedByCert');
|
|
return templateMaps.instance(template, template_params);
|
|
},
|
|
function prepareParams(err, instance){
|
|
if ( req.profiler ) req.profiler.done('TemplateMaps_instance');
|
|
if ( err ) throw err;
|
|
layergroup = instance;
|
|
fakereq = { query: {}, params: {}, headers: _.clone(req.headers),
|
|
method: req.method,
|
|
res: res,
|
|
profiler: req.profiler
|
|
};
|
|
ws.setDBParams(cdbuser, fakereq.params, this);
|
|
},
|
|
function setApiKey(err){
|
|
if ( req.profiler ) req.profiler.done('setDBParams');
|
|
if ( err ) throw err;
|
|
cartoData.getUserMapKey(cdbuser, this);
|
|
},
|
|
function createLayergroup(err, val) {
|
|
if ( req.profiler ) req.profiler.done('getUserMapKey');
|
|
if ( err ) throw err;
|
|
fakereq.params.api_key = val;
|
|
ws.createLayergroup(layergroup, fakereq, this);
|
|
},
|
|
function signLayergroup(err, resp) {
|
|
// NOTE: createLayergroup uses profiler.start()/end() internally
|
|
//if ( req.profiler ) req.profiler.done('createLayergroup');
|
|
if ( err ) throw err;
|
|
response = resp;
|
|
var signer = cdbuser;
|
|
var map_id = response.layergroupid.split(':')[0]; // dropping last_updated
|
|
var crt_id = template.auth_id; // check ?
|
|
if ( ! crt_id ) {
|
|
var errmsg = "Template '" + tpl_id + "' of user '" + cdbuser + "' has no signature";
|
|
// Is this really illegal ?
|
|
// Maybe we could just return an unsigned layergroupid
|
|
// in this case...
|
|
err = new Error(errmsg);
|
|
err.http_status = 403; // Forbidden, we refuse to respond to this
|
|
throw err;
|
|
}
|
|
signedMaps.signMap(signer, map_id, crt_id, this);
|
|
},
|
|
function prepareResponse(err) {
|
|
if ( req.profiler ) req.profiler.done('signMap');
|
|
if ( err ) throw err;
|
|
//console.log("Response from createLayergroup: "); console.dir(response);
|
|
// Add the signature part to the token!
|
|
var tplhash = templateMaps.fingerPrint(template).substring(0,8);
|
|
if ( req.profiler ) req.profiler.done('fingerPrint');
|
|
response.layergroupid = cdbuser + '@' + tplhash + '@' + response.layergroupid;
|
|
return response;
|
|
},
|
|
callback
|
|
);
|
|
}
|
|
|
|
function finish_instanciation(err, response, res, req) {
|
|
if ( req.profiler ) {
|
|
res.header('X-Tiler-Profiler', req.profiler.toJSONString());
|
|
}
|
|
if (err) {
|
|
var statusCode = 400;
|
|
response = { error: ''+err };
|
|
if ( ! _.isUndefined(err.http_status) ) {
|
|
statusCode = err.http_status;
|
|
}
|
|
if(debug) {
|
|
response.stack = err.stack;
|
|
}
|
|
ws.sendError(res, response, statusCode, 'POST INSTANCE TEMPLATE', err);
|
|
} else {
|
|
ws.sendResponse(res, [response, 200]);
|
|
}
|
|
}
|
|
|
|
ws.post(template_baseurl + '/:template_id', function(req, res) {
|
|
if ( req.profiler && req.profiler.statsd_client) {
|
|
req.profiler.start('windshaft-cartodb.instance_template_post');
|
|
}
|
|
Step(
|
|
function() {
|
|
if ( ! req.headers['content-type'] || req.headers['content-type'].split(';')[0] != 'application/json') {
|
|
throw new Error('template POST data must be of type application/json, it is instead ');
|
|
}
|
|
instanciateTemplate(req, res, req.body, this);
|
|
}, function(err, response) {
|
|
finish_instanciation(err, response, res, req);
|
|
}
|
|
);
|
|
});
|
|
|
|
/**
|
|
* jsonp endpoint, allows to instanciate a template with a json call.
|
|
* callback query argument is mandartoy
|
|
*/
|
|
ws.get(template_baseurl + '/:template_id/jsonp', function(req, res) {
|
|
if ( req.profiler && req.profiler.statsd_client) {
|
|
req.profiler.start('windshaft-cartodb.instance_template_get');
|
|
}
|
|
Step(
|
|
function() {
|
|
if ( req.query.callback === undefined || req.query.callback.length === 0) {
|
|
throw new Error('callback parameter should be present and be a function name');
|
|
}
|
|
var config = {};
|
|
if(req.query.config) {
|
|
try {
|
|
config = JSON.parse(req.query.config);
|
|
} catch(e) {
|
|
throw new Error('badformed config parameter, should be a valid JSON');
|
|
}
|
|
}
|
|
instanciateTemplate(req, res, config, this);
|
|
}, function(err, response) {
|
|
finish_instanciation(err, response, res, req);
|
|
}
|
|
);
|
|
});
|
|
|
|
|
|
// ---- Template maps interface ends @}
|
|
|
|
return ws;
|
|
};
|
|
|
|
module.exports = CartodbWindshaft;
|