56 lines
1.6 KiB
JavaScript
56 lines
1.6 KiB
JavaScript
var _ = require('underscore');
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var dot = require('dot');
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/**
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* @param {MapStore} mapStore
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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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function MapStoreMapConfigProvider(mapStore, params) {
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this.mapStore = mapStore;
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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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}
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module.exports = MapStoreMapConfigProvider;
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MapStoreMapConfigProvider.prototype.getMapConfig = function(callback) {
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var self = this;
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this.mapStore.load(this.token, function(err, mapConfig) {
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return callback(err, mapConfig, self.params, {});
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});
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};
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MapStoreMapConfigProvider.prototype.getKey = function() {
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return this.createKey(false);
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};
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MapStoreMapConfigProvider.prototype.getCacheBuster = function() {
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return this.cacheBuster;
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};
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MapStoreMapConfigProvider.prototype.filter = function(key) {
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var regex = new RegExp('^' + this.createKey(true) + '.*');
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return key && key.match(regex);
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};
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// Configure bases for cache keys suitable for string interpolation
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var baseKey = '{{=it.dbname}}:{{=it.token}}';
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var rendererKey = baseKey + ':{{=it.dbuser}}:{{=it.format}}:{{=it.layer}}:{{=it.scale_factor}}';
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var baseKeyTpl = dot.template(baseKey);
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var rendererKeyTpl = dot.template(rendererKey);
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MapStoreMapConfigProvider.prototype.createKey = function(base) {
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var tplValues = _.defaults({}, this.params, {
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dbname: '',
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token: '',
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dbuser: '',
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format: '',
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layer: '',
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scale_factor: 1
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});
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return (base) ? baseKeyTpl(tplValues) : rendererKeyTpl(tplValues);
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}; |