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Code review implementation of cacheStorage.clear()

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Possibly related issue:
- https://old.reddit.com/r/firefox/comments/b3u4nj/what_is_the_estimated_time_period_for_reviewing_a/

@gwarser has been able to reproduce at will, while I have been
unable to reproduce at all. The change here is to clear the
content of the database instead of outright deleting it before
restoring backed up settings.
This commit is contained in:
Raymond Hill 2019-03-28 10:17:47 -03:00
parent da9e3f29b8
commit f62d866b36
No known key found for this signature in database
GPG key ID: 25E1490B761470C2
2 changed files with 23 additions and 19 deletions
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20
src/js/cachestorage.js
View file

@ -211,10 +211,7 @@
if ( ev.oldVersion === 1 ) { return; }
try {
const db = ev.target.result;
const table = db.createObjectStore(
STORAGE_NAME,
{ keyPath: 'key' }
);
db.createObjectStore(STORAGE_NAME, { keyPath: 'key' });
} catch(ex) {
req.onerror();
}
@ -422,15 +419,18 @@
if ( typeof callback !== 'function' ) {
callback = noopfn;
}
disconnect();
try {
const req = indexedDB.deleteDatabase(STORAGE_NAME);
req.onsuccess = req.onerror = ( ) => {
getDb().then(db => {
let transaction = db.transaction(STORAGE_NAME, 'readwrite');
transaction.oncomplete =
transaction.onerror =
transaction.onabort = ( ) => {
callback();
};
} catch(ex) {
transaction.objectStore(STORAGE_NAME).clear();
}).catch(reason => {
console.info(`cacheStorage.clearDb() failed: ${reason}`);
callback();
}
});
};
return getDb().then(db => {

22
src/js/messaging.js
View file

@ -799,17 +799,21 @@ var backupUserData = function(callback) {
µb.assets.get(µb.userFiltersPath, onUserFiltersReady);
};
var restoreUserData = function(request) {
var userData = request.userData;
const restoreUserData = function(request) {
const userData = request.userData;
var restart = function() {
const restart = function() {
vAPI.app.restart();
};
var onAllRemoved = function() {
let countdown = 2;
const onAllRemoved = function() {
countdown -= 1;
if ( countdown !== 0 ) { return; }
µBlock.saveLocalSettings();
vAPI.storage.set(userData.userSettings);
var hiddenSettings = userData.hiddenSettings;
let hiddenSettings = userData.hiddenSettings;
if ( hiddenSettings instanceof Object === false ) {
hiddenSettings = µBlock.hiddenSettingsFromString(
userData.hiddenSettingsString || ''
@ -840,7 +844,7 @@ var restoreUserData = function(request) {
// If we are going to restore all, might as well wipe out clean local
// storage
µb.cacheStorage.clear();
µb.cacheStorage.clear().then(( ) => { onAllRemoved(); });
vAPI.storage.clear(onAllRemoved);
vAPI.localStorage.removeItem('immediateHiddenSettings');
};
@ -856,9 +860,9 @@ const resetUserData = function() {
vAPI.app.restart();
}
};
µb.cacheStorage.clear().then(( ) => countdown()); // 1
vAPI.storage.clear(countdown); // 2
µb.saveLocalSettings(countdown); // 3
µb.cacheStorage.clear().then(( ) => countdown()); // 1
vAPI.storage.clear(countdown); // 2
µb.saveLocalSettings(countdown); // 3
vAPI.localStorage.removeItem('immediateHiddenSettings');
};