blob: ef3a6c0485c56239dbcab27c0fd5f9ac193a5250 [file] [log] [blame]
// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
(function() {
'use strict';
// Date cutoff is one day:
var DRAFT_MAX_AGE = 24*60*60*1000;
// Clean up old entries no more frequently than one day.
var CLEANUP_THROTTLE_INTERVAL = 24*60*60*1000;
Polymer({
is: 'gr-storage',
properties: {
_lastCleanup: Number,
_storage: {
type: Object,
value: function() {
return window.localStorage;
},
},
},
getDraftComment: function(location) {
this._cleanupDrafts();
return this._getObject(this._getDraftKey(location));
},
setDraftComment: function(location, message) {
var key = this._getDraftKey(location);
this._setObject(key, {message: message, updated: Date.now()});
},
eraseDraftComment: function(location) {
var key = this._getDraftKey(location);
this._storage.removeItem(key);
},
_getDraftKey: function(location) {
return ['draft', location.changeNum, location.patchNum, location.path,
location.line].join(':');
},
_cleanupDrafts: function() {
// Throttle cleanup to the throttle interval.
if (this._lastCleanup &&
Date.now() - this._lastCleanup < CLEANUP_THROTTLE_INTERVAL) {
return;
}
this._lastCleanup = Date.now();
var draft;
for (var key in this._storage) {
if (key.indexOf('draft:') === 0) {
draft = this._getObject(key);
if (Date.now() - draft.updated > DRAFT_MAX_AGE) {
this._storage.removeItem(key);
}
}
}
},
_getObject: function(key) {
var serial = this._storage.getItem(key);
if (!serial) { return null; }
return JSON.parse(serial);
},
_setObject: function(key, obj) {
this._storage.setItem(key, JSON.stringify(obj));
},
});
})();