nheko/src/Cache.h
Nicolas Werner e6fcccc8bd Don't store pending receipts in cache
We don't get notified for every message. Sometimes we only get a read
receipt for the newest message, which means old read receipts accumulate
in the database. This least to some considerable CPU overhead, when
checking if the timeline should be notified for new read receipts.
Instead just always notify, since that has far less overhead in the
worst case and doesn't need complicated cache cleanup.

The old pending_receipts db is not removed for now. It should still have
minimal storage overhead and we don't have a good mechanism for cache
format upgrades atm.
2020-04-30 22:42:56 +02:00

282 lines
7.7 KiB
C++

/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <QDateTime>
#include <QDir>
#include <QImage>
#include <QString>
#if __has_include(<lmdbxx/lmdb++.h>)
#include <lmdbxx/lmdb++.h>
#else
#include <lmdb++.h>
#endif
#include <mtx/responses.hpp>
#include "CacheCryptoStructs.h"
#include "CacheStructs.h"
namespace cache {
void
init(const QString &user_id);
std::string
displayName(const std::string &room_id, const std::string &user_id);
QString
displayName(const QString &room_id, const QString &user_id);
QString
avatarUrl(const QString &room_id, const QString &user_id);
void
removeDisplayName(const QString &room_id, const QString &user_id);
void
removeAvatarUrl(const QString &room_id, const QString &user_id);
void
insertDisplayName(const QString &room_id, const QString &user_id, const QString &display_name);
void
insertAvatarUrl(const QString &room_id, const QString &user_id, const QString &avatar_url);
//! Load saved data for the display names & avatars.
void
populateMembers();
std::vector<std::string>
joinedRooms();
QMap<QString, RoomInfo>
roomInfo(bool withInvites = true);
std::map<QString, bool>
invites();
//! Calculate & return the name of the room.
QString
getRoomName(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
//! Get room join rules
mtx::events::state::JoinRule
getRoomJoinRule(lmdb::txn &txn, lmdb::dbi &statesdb);
bool
getRoomGuestAccess(lmdb::txn &txn, lmdb::dbi &statesdb);
//! Retrieve the topic of the room if any.
QString
getRoomTopic(lmdb::txn &txn, lmdb::dbi &statesdb);
//! Retrieve the room avatar's url if any.
QString
getRoomAvatarUrl(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb, const QString &room_id);
//! Retrieve the version of the room if any.
QString
getRoomVersion(lmdb::txn &txn, lmdb::dbi &statesdb);
//! Retrieve member info from a room.
std::vector<RoomMember>
getMembers(const std::string &room_id, std::size_t startIndex = 0, std::size_t len = 30);
void
saveState(const mtx::responses::Sync &res);
bool
isInitialized();
std::string
nextBatchToken();
void
deleteData();
void
removeInvite(lmdb::txn &txn, const std::string &room_id);
void
removeInvite(const std::string &room_id);
void
removeRoom(lmdb::txn &txn, const std::string &roomid);
void
removeRoom(const std::string &roomid);
void
removeRoom(const QString &roomid);
void
setup();
bool
isFormatValid();
void
setCurrentFormat();
std::map<QString, mtx::responses::Timeline>
roomMessages();
QMap<QString, mtx::responses::Notifications>
getTimelineMentions();
//! Retrieve all the user ids from a room.
std::vector<std::string>
roomMembers(const std::string &room_id);
//! Check if the given user has power leve greater than than
//! lowest power level of the given events.
bool
hasEnoughPowerLevel(const std::vector<mtx::events::EventType> &eventTypes,
const std::string &room_id,
const std::string &user_id);
//! Retrieves the saved room avatar.
QImage
getRoomAvatar(const QString &id);
QImage
getRoomAvatar(const std::string &id);
//! Adds a user to the read list for the given event.
//!
//! There should be only one user id present in a receipt list per room.
//! The user id should be removed from any other lists.
using Receipts = std::map<std::string, std::map<std::string, uint64_t>>;
void
updateReadReceipt(lmdb::txn &txn, const std::string &room_id, const Receipts &receipts);
//! Retrieve all the read receipts for the given event id and room.
//!
//! Returns a map of user ids and the time of the read receipt in milliseconds.
using UserReceipts = std::multimap<uint64_t, std::string, std::greater<uint64_t>>;
UserReceipts
readReceipts(const QString &event_id, const QString &room_id);
QByteArray
image(const QString &url);
QByteArray
image(lmdb::txn &txn, const std::string &url);
inline QByteArray
image(const std::string &url)
{
return image(QString::fromStdString(url));
}
void
saveImage(const std::string &url, const std::string &data);
void
saveImage(const QString &url, const QByteArray &data);
RoomInfo
singleRoomInfo(const std::string &room_id);
std::vector<std::string>
roomsWithStateUpdates(const mtx::responses::Sync &res);
std::vector<std::string>
roomsWithTagUpdates(const mtx::responses::Sync &res);
std::map<QString, RoomInfo>
getRoomInfo(const std::vector<std::string> &rooms);
inline std::map<QString, RoomInfo>
roomUpdates(const mtx::responses::Sync &sync)
{
return getRoomInfo(roomsWithStateUpdates(sync));
}
inline std::map<QString, RoomInfo>
roomTagUpdates(const mtx::responses::Sync &sync)
{
return getRoomInfo(roomsWithTagUpdates(sync));
}
//! Calculates which the read status of a room.
//! Whether all the events in the timeline have been read.
bool
calculateRoomReadStatus(const std::string &room_id);
void
calculateRoomReadStatus();
std::vector<SearchResult>
searchUsers(const std::string &room_id, const std::string &query, std::uint8_t max_items = 5);
std::vector<RoomSearchResult>
searchRooms(const std::string &query, std::uint8_t max_items = 5);
void
markSentNotification(const std::string &event_id);
//! Removes an event from the sent notifications.
void
removeReadNotification(const std::string &event_id);
//! Check if we have sent a desktop notification for the given event id.
bool
isNotificationSent(const std::string &event_id);
//! Add all notifications containing a user mention to the db.
void
saveTimelineMentions(const mtx::responses::Notifications &res);
//! Remove old unused data.
void
deleteOldMessages();
void
deleteOldData() noexcept;
//! Retrieve all saved room ids.
std::vector<std::string>
getRoomIds(lmdb::txn &txn);
//! Mark a room that uses e2e encryption.
void
setEncryptedRoom(lmdb::txn &txn, const std::string &room_id);
bool
isRoomEncrypted(const std::string &room_id);
//! Check if a user is a member of the room.
bool
isRoomMember(const std::string &user_id, const std::string &room_id);
//
// Outbound Megolm Sessions
//
void
saveOutboundMegolmSession(const std::string &room_id,
const OutboundGroupSessionData &data,
mtx::crypto::OutboundGroupSessionPtr session);
OutboundGroupSessionDataRef
getOutboundMegolmSession(const std::string &room_id);
bool
outboundMegolmSessionExists(const std::string &room_id) noexcept;
void
updateOutboundMegolmSession(const std::string &room_id, int message_index);
void
importSessionKeys(const mtx::crypto::ExportedSessionKeys &keys);
mtx::crypto::ExportedSessionKeys
exportSessionKeys();
//
// Inbound Megolm Sessions
//
void
saveInboundMegolmSession(const MegolmSessionIndex &index,
mtx::crypto::InboundGroupSessionPtr session);
OlmInboundGroupSession *
getInboundMegolmSession(const MegolmSessionIndex &index);
bool
inboundMegolmSessionExists(const MegolmSessionIndex &index);
//
// Olm Sessions
//
void
saveOlmSession(const std::string &curve25519, mtx::crypto::OlmSessionPtr session);
std::vector<std::string>
getOlmSessions(const std::string &curve25519);
std::optional<mtx::crypto::OlmSessionPtr>
getOlmSession(const std::string &curve25519, const std::string &session_id);
void
saveOlmAccount(const std::string &pickled);
std::string
restoreOlmAccount();
void
restoreSessions();
}