83 lines
2.5 KiB
JavaScript
83 lines
2.5 KiB
JavaScript
'use strict';
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const BaseMapConfigProvider = require('./base-mapconfig-adapter');
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const dot = require('dot');
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// Configure bases for cache keys suitable for string interpolation
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const baseKey = '{{=it.dbname}}:{{=it.token}}';
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const rendererKey = baseKey + ':{{=it.dbuser}}:{{=it.format}}:{{=it.layer}}:{{=it.scale_factor}}';
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const baseKeyTpl = dot.template(baseKey);
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const rendererKeyTpl = dot.template(rendererKey);
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module.exports = class MapStoreMapConfigProvider extends BaseMapConfigProvider {
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/**
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* @param {MapStore} mapStore
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* @param {String} user
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* @param {UserLimitsBackend} userLimitsBackend
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* @param {Object} params
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* @constructor
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* @type {MapStoreMapConfigProvider}
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*/
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constructor (mapStore, user, userLimitsBackend, pgConnection, affectedTablesCache, params) {
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super();
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this.mapStore = mapStore;
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this.user = user;
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this.userLimitsBackend = userLimitsBackend;
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this.pgConnection = pgConnection;
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this.affectedTablesCache = affectedTablesCache;
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this.params = params;
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this.token = params.token;
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this.cacheBuster = params.cache_buster || 0;
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this.mapConfig = null;
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this.context = null;
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}
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getMapConfig (callback) {
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if (this.mapConfig !== null) {
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return callback(null, this.mapConfig, this.params, this.context);
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}
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const context = {};
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this.userLimitsBackend.getRenderLimits(this.user, this.params.api_key, (err, renderLimits) => {
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if (err) {
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return callback(err);
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}
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context.limits = renderLimits;
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this.mapStore.load(this.token, (err, mapConfig) => {
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if (err) {
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return callback(err);
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}
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this.mapConfig = mapConfig;
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this.context = context;
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return callback(null, mapConfig, this.params, context);
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});
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});
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}
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getKey () {
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return this.createKey(false);
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}
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getCacheBuster () {
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return this.cacheBuster;
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}
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filter (key) {
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const regex = new RegExp('^' + this.createKey(true) + '.*');
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return key && key.match(regex);
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}
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createKey (base) {
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const { dbname = '', token = '', dbuser = '', format = '', layer = '', scale_factor = 1 } = this.params;
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const tplValues = { dbname, token, dbuser, format, layer, scale_factor };
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return (base) ? baseKeyTpl(tplValues) : rendererKeyTpl(tplValues);
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}
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};
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