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Reduce db writes a bit

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This commit is contained in:
Nicolas Werner 2023-03-19 20:29:10 +01:00
parent fafb9cc4a6
commit eb1a900ed2
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GPG key ID: C8D75E610773F2D9
1 changed files with 32 additions and 7 deletions
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39
src/Cache.cpp
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@ -1893,6 +1893,14 @@ Cache::saveState(const mtx::responses::Sync &res)
auto membersdb = getMembersDb(txn, room.first);
auto eventsDb = getEventsDb(txn, room.first);
// nhlog::db()->critical(
// "Saving events for room: {}, state {}, timeline {}, account {}, ephemeral {}",
// room.first,
// room.second.state.events.size(),
// room.second.timeline.events.size(),
// room.second.account_data.events.size(),
// room.second.ephemeral.events.size());
saveStateEvents(
txn, statesdb, stateskeydb, membersdb, eventsDb, room.first, room.second.state.events);
saveStateEvents(
@ -1901,13 +1909,12 @@ Cache::saveState(const mtx::responses::Sync &res)
saveTimelineMessages(txn, eventsDb, room.first, room.second.timeline);
RoomInfo updatedInfo;
std::string_view originalRoomInfoDump;
{
// retrieve the old tags and modification ts
std::string_view data;
if (roomsDb_.get(txn, room.first, data)) {
if (roomsDb_.get(txn, room.first, originalRoomInfoDump)) {
try {
RoomInfo tmp = nlohmann::json::parse(std::string_view(data.data(), data.size()))
.get<RoomInfo>();
RoomInfo tmp = nlohmann::json::parse(originalRoomInfoDump).get<RoomInfo>();
updatedInfo.tags = std::move(tmp.tags);
updatedInfo.approximate_last_modification_ts =
@ -1915,7 +1922,7 @@ Cache::saveState(const mtx::responses::Sync &res)
} catch (const nlohmann::json::exception &e) {
nhlog::db()->warn("failed to parse room info: room_id ({}), {}: {}",
room.first,
std::string(data.data(), data.size()),
originalRoomInfoDump,
e.what());
}
}
@ -2004,7 +2011,12 @@ Cache::saveState(const mtx::responses::Sync &res)
std::visit([](const auto &e) -> uint64_t { return e.origin_server_ts; }, e);
}
roomsDb_.put(txn, room.first, nlohmann::json(updatedInfo).dump());
if (auto newRoomInfoDump = nlohmann::json(updatedInfo).dump();
newRoomInfoDump != originalRoomInfoDump) {
nhlog::db()->critical(
"Writing out new room info:\n{}\n{}", originalRoomInfoDump, newRoomInfoDump);
roomsDb_.put(txn, room.first, newRoomInfoDump);
}
for (const auto &e : room.second.ephemeral.events) {
if (auto receiptsEv =
@ -2135,7 +2147,20 @@ Cache::savePresence(
const std::vector<mtx::events::Event<mtx::events::presence::Presence>> &presenceUpdates)
{
for (const auto &update : presenceUpdates) {
presenceDb_.put(txn, update.sender, nlohmann::json(update.content).dump());
auto toWrite = nlohmann::json(update.content);
// Nheko currently doesn't use those and it causes lots of db writes :)
toWrite.erase("currently_active");
toWrite.erase("last_active_ago");
auto toWriteStr = toWrite.dump();
std::string_view oldPresenceVal;
presenceDb_.get(txn, update.sender, oldPresenceVal);
if (oldPresenceVal != toWriteStr) {
// nhlog::db()->critical(
// "Presence update for {}: {} -> {}", update.sender, oldPresenceVal, toWriteStr);
presenceDb_.put(txn, update.sender, toWriteStr);
}
}
}