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improvement: more efficient /sync and only send device updates when sharing a room

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This commit is contained in:
timokoesters 2020-07-29 17:03:04 +02:00
parent 310b0fcd86
commit 0693387769
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GPG key ID: 24DA7517711A2BA4
3 changed files with 105 additions and 69 deletions
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37
src/database/rooms.rs
View file

@ -611,44 +611,29 @@ impl Rooms {
self.pdus_since(user_id, room_id, 0)
}
/// Returns an iterator over all events in a room that happened after the event with id `since`.
/// Returns an iterator over all events in a room that happened after the event with id `since`
/// in reverse-chronological order.
pub fn pdus_since(
&self,
user_id: &UserId,
room_id: &RoomId,
since: u64,
) -> Result<impl Iterator<Item = Result<PduEvent>>> {
// Create the first part of the full pdu id
let mut pdu_id = room_id.to_string().as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&(since).to_be_bytes());
self.pdus_since_pduid(user_id, room_id, &pdu_id)
}
/// Returns an iterator over all events in a room that happened after the event with id `since`.
pub fn pdus_since_pduid(
&self,
user_id: &UserId,
room_id: &RoomId,
pdu_id: &[u8],
) -> Result<impl Iterator<Item = Result<PduEvent>>> {
// Create the first part of the full pdu id
) -> Result<impl DoubleEndedIterator<Item = Result<PduEvent>>> {
let mut prefix = room_id.to_string().as_bytes().to_vec();
prefix.push(0xff);
// Skip the first pdu if it's exactly at since, because we sent that last time
let mut first_pdu_id = prefix.clone();
first_pdu_id.extend_from_slice(&(since+1).to_be_bytes());
let mut last_pdu_id = prefix.clone();
last_pdu_id.extend_from_slice(&u64::MAX.to_be_bytes());
let user_id = user_id.clone();
Ok(self
.pduid_pdu
.range(pdu_id..)
// Skip the first pdu if it's exactly at since, because we sent that last time
.skip(if self.pduid_pdu.get(pdu_id)?.is_some() {
1
} else {
0
})
.range(first_pdu_id..last_pdu_id)
.filter_map(|r| r.ok())
.take_while(move |(k, _)| k.starts_with(&prefix))
.map(move |(_, v)| {
let mut pdu = serde_json::from_slice::<PduEvent>(&v)
.map_err(|_| Error::bad_database("PDU in db is invalid."))?;

57
src/database/users.rs
View file

@ -9,7 +9,7 @@ use ruma::{
},
},
events::{AnyToDeviceEvent, EventType},
DeviceId, Raw, UserId,
DeviceId, Raw, UserId, RoomId,
};
use std::{collections::BTreeMap, convert::TryFrom, mem, time::SystemTime};
@ -22,7 +22,7 @@ pub struct Users {
pub(super) token_userdeviceid: sled::Tree,
pub(super) onetimekeyid_onetimekeys: sled::Tree, // OneTimeKeyId = UserId + AlgorithmAndDeviceId
pub(super) keychangeid_userid: sled::Tree, // KeyChangeId = Count
pub(super) keychangeid_userid: sled::Tree, // KeyChangeId = RoomId + Count
pub(super) keyid_key: sled::Tree, // KeyId = UserId + KeyId (depends on key type)
pub(super) userid_masterkeyid: sled::Tree,
pub(super) userid_selfsigningkeyid: sled::Tree,
@ -371,6 +371,7 @@ impl Users {
user_id: &UserId,
device_id: &DeviceId,
device_keys: &DeviceKeys,
rooms: &super::rooms::Rooms,
globals: &super::globals::Globals,
) -> Result<()> {
let mut userdeviceid = user_id.to_string().as_bytes().to_vec();
@ -382,8 +383,15 @@ impl Users {
&*serde_json::to_string(&device_keys).expect("DeviceKeys::to_string always works"),
)?;
self.keychangeid_userid
.insert(globals.next_count()?.to_be_bytes(), &*user_id.to_string())?;
let count = globals.next_count()?.to_be_bytes();
for room_id in rooms.rooms_joined(&user_id) {
let mut key = room_id?.to_string().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&count);
self.keychangeid_userid
.insert(key, &*user_id.to_string())?;
}
Ok(())
}
@ -394,6 +402,7 @@ impl Users {
master_key: &CrossSigningKey,
self_signing_key: &Option<CrossSigningKey>,
user_signing_key: &Option<CrossSigningKey>,
rooms: &super::rooms::Rooms,
globals: &super::globals::Globals,
) -> Result<()> {
// TODO: Check signatures
@ -482,8 +491,15 @@ impl Users {
.insert(&*user_id.to_string(), user_signing_key_key)?;
}
self.keychangeid_userid
.insert(globals.next_count()?.to_be_bytes(), &*user_id.to_string())?;
let count = globals.next_count()?.to_be_bytes();
for room_id in rooms.rooms_joined(&user_id) {
let mut key = room_id?.to_string().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&count);
self.keychangeid_userid
.insert(key, &*user_id.to_string())?;
}
Ok(())
}
@ -494,6 +510,7 @@ impl Users {
key_id: &str,
signature: (String, String),
sender_id: &UserId,
rooms: &super::rooms::Rooms,
globals: &super::globals::Globals,
) -> Result<()> {
let mut key = target_id.to_string().as_bytes().to_vec();
@ -525,19 +542,33 @@ impl Users {
.expect("CrossSigningKey::to_string always works"),
)?;
self.keychangeid_userid
.insert(globals.next_count()?.to_be_bytes(), &*target_id.to_string())?;
// TODO: Should we notify about this change?
let count = globals.next_count()?.to_be_bytes();
for room_id in rooms.rooms_joined(&target_id) {
let mut key = room_id?.to_string().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&count);
self.keychangeid_userid
.insert(key, &*target_id.to_string())?;
}
Ok(())
}
pub fn keys_changed(&self, since: u64) -> impl Iterator<Item = Result<UserId>> {
pub fn keys_changed(&self, room_id: &RoomId, since: u64) -> impl Iterator<Item = Result<UserId>> {
let mut prefix = room_id.to_string().as_bytes().to_vec();
prefix.push(0xff);
let mut start = prefix.clone();
start.extend_from_slice(&(since + 1).to_be_bytes());
self.keychangeid_userid
.range((since + 1).to_be_bytes()..)
.values()
.map(|bytes| {
.range(start..)
.filter_map(|r| r.ok())
.take_while(move |(k, _)| k.starts_with(&prefix))
.map(|(_, bytes)| {
Ok(
UserId::try_from(utils::string_from_bytes(&bytes?).map_err(|_| {
UserId::try_from(utils::string_from_bytes(&bytes).map_err(|_| {
Error::bad_database(
"User ID in devicekeychangeid_userid is invalid unicode.",
)