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Fix race condition between /messages and /sync

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This commit is contained in:
Nicolas Werner 2020-07-18 21:00:36 +02:00
parent 046b3f4da6
commit 5695f004a2
2 changed files with 48 additions and 34 deletions
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80
src/ChatPage.cpp
View file

@ -573,6 +573,12 @@ ChatPage::ChatPage(QSharedPointer<UserSettings> userSettings, QWidget *parent)
[this]() { QTimer::singleShot(RETRY_TIMEOUT, this, &ChatPage::trySync); },
Qt::QueuedConnection);
connect(this,
&ChatPage::newSyncResponse,
this,
&ChatPage::handleSyncResponse,
Qt::QueuedConnection);
connect(this, &ChatPage::dropToLoginPageCb, this, &ChatPage::dropToLoginPage);
instance_ = this;
@ -1003,6 +1009,45 @@ ChatPage::startInitialSync()
&ChatPage::initialSyncHandler, this, std::placeholders::_1, std::placeholders::_2));
}
void
ChatPage::handleSyncResponse(mtx::responses::Sync res)
{
nhlog::net()->debug("sync completed: {}", res.next_batch);
// Ensure that we have enough one-time keys available.
ensureOneTimeKeyCount(res.device_one_time_keys_count);
// TODO: fine grained error handling
try {
cache::saveState(res);
olm::handle_to_device_messages(res.to_device.events);
auto updates = cache::roomUpdates(res);
emit syncTopBar(updates);
emit syncRoomlist(updates);
emit syncUI(res.rooms);
emit syncTags(cache::roomTagUpdates(res));
// if we process a lot of syncs (1 every 200ms), this means we clean the
// db every 100s
static int syncCounter = 0;
if (syncCounter++ >= 500) {
cache::deleteOldData();
syncCounter = 0;
}
} catch (const lmdb::map_full_error &e) {
nhlog::db()->error("lmdb is full: {}", e.what());
cache::deleteOldData();
} catch (const lmdb::error &e) {
nhlog::db()->error("saving sync response: {}", e.what());
}
emit trySyncCb();
}
void
ChatPage::trySync()
{
@ -1042,40 +1087,7 @@ ChatPage::trySync()
return;
}
nhlog::net()->debug("sync completed: {}", res.next_batch);
// Ensure that we have enough one-time keys available.
ensureOneTimeKeyCount(res.device_one_time_keys_count);
// TODO: fine grained error handling
try {
cache::saveState(res);
olm::handle_to_device_messages(res.to_device.events);
auto updates = cache::roomUpdates(res);
emit syncTopBar(updates);
emit syncRoomlist(updates);
emit syncUI(res.rooms);
emit syncTags(cache::roomTagUpdates(res));
// if we process a lot of syncs (1 every 200ms), this means we clean the
// db every 100s
static int syncCounter = 0;
if (syncCounter++ >= 500) {
cache::deleteOldData();
syncCounter = 0;
}
} catch (const lmdb::map_full_error &e) {
nhlog::db()->error("lmdb is full: {}", e.what());
cache::deleteOldData();
} catch (const lmdb::error &e) {
nhlog::db()->error("saving sync response: {}", e.what());
}
emit trySyncCb();
emit newSyncResponse(res);
});
}

2
src/ChatPage.h
View file

@ -139,6 +139,7 @@ signals:
void trySyncCb();
void tryDelayedSyncCb();
void tryInitialSyncCb();
void newSyncResponse(mtx::responses::Sync res);
void leftRoom(const QString &room_id);
void initializeRoomList(QMap<QString, RoomInfo>);
@ -173,6 +174,7 @@ private slots:
void joinRoom(const QString &room);
void sendTypingNotifications();
void handleSyncResponse(mtx::responses::Sync res);
private:
static ChatPage *instance_;