70 lines
2.2 KiB
70 lines
2.2 KiB
/* |
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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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/* globals chrome */ |
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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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