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Added caching to GET requests to API

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This commit is contained in:
Marcin Kurczewski 2014-10-19 11:13:56 +02:00
parent 1e82741060
commit 56ac7adb1b
1 changed files with 42 additions and 0 deletions
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42
public_html/js/Api.js
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@ -9,6 +9,8 @@ App.API = function(_, jQuery, promise, appState) {
var AJAX_LOADING = 3; var AJAX_LOADING = 3;
var AJAX_DONE = 4; var AJAX_DONE = 4;
var cache = {};
function get(url, data) { function get(url, data) {
return request('GET', url, data); return request('GET', url, data);
} }
@ -25,7 +27,47 @@ App.API = function(_, jQuery, promise, appState) {
return request('DELETE', url, data); return request('DELETE', url, data);
} }
function getCacheKey(method, url, data) {
return JSON.stringify({method: method, url: url, data: data});
}
function clearCache() {
cache = {};
}
function request(method, url, data) { function request(method, url, data) {
if (method === 'GET') {
return requestWithCache(method, url, data);
}
clearCache();
return requestWithAjax(method, url, data);
}
function requestWithCache(method, url, data) {
var cacheKey = getCacheKey(method, url, data);
if (_.has(cache, cacheKey)) {
return promise.make(function(resolve, reject) {
resolve(cache[cacheKey]);
});
}
return promise.make(function(resolve, reject) {
promise.wait(requestWithAjax(method, url, data))
.then(function(response) {
setCache(method, url, data, response);
resolve(response);
}).fail(function(response) {
reject(response);
});
});
}
function setCache(method, url, data, response) {
var cacheKey = getCacheKey(method, url, data);
cache[cacheKey] = response;
}
function requestWithAjax(method, url, data) {
var fullUrl = baseUrl + '/' + url; var fullUrl = baseUrl + '/' + url;
fullUrl = fullUrl.replace(/\/{2,}/, '/'); fullUrl = fullUrl.replace(/\/{2,}/, '/');