70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
/*
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Copyright 2016 Mozilla Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/* eslint strict: ["error", "function"] */
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(function() {
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'use strict';
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var storageLocal = chrome.storage.local;
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var storageSync = chrome.storage.sync;
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if (!storageSync) {
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// No sync storage area - nothing to migrate to.
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return;
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}
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getStorageNames(function(storageKeys) {
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storageLocal.get(storageKeys, function(values) {
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if (!values || !Object.keys(values).length) {
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// No local storage - nothing to migrate.
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return;
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}
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migrateToSyncStorage(values);
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});
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});
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function getStorageNames(callback) {
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var x = new XMLHttpRequest();
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var schema_location = chrome.runtime.getManifest().storage.managed_schema;
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x.open('get', chrome.runtime.getURL(schema_location));
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x.onload = function() {
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var storageKeys = Object.keys(x.response.properties);
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callback(storageKeys);
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};
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x.responseType = 'json';
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x.send();
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}
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// Save |values| to storage.sync and delete the values with that key from
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// storage.local.
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function migrateToSyncStorage(values) {
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storageSync.set(values, function() {
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if (chrome.runtime.lastError) {
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console.error('Failed to migrate settings due to an error: ' +
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chrome.runtime.lastError.message);
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return;
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}
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// Migration successful. Delete local settings.
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storageLocal.remove(Object.keys(values), function() {
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// In theory remove() could fail (e.g. if the browser's storage
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// backend is corrupt), but since storageSync.set succeeded, consider
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// the migration successful.
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console.log(
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'Successfully migrated preferences from local to sync storage.');
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});
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});
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}
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})();
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