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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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80
src/client_server.rs
View file

@ -1,5 +1,5 @@
use std::{
collections::{hash_map, BTreeMap, HashMap},
collections::{hash_map, BTreeMap, HashMap, HashSet},
convert::{TryFrom, TryInto},
time::{Duration, SystemTime},
};
@ -898,7 +898,7 @@ pub fn upload_keys_route(
// This check is needed to assure that signatures are kept
if db.users.get_device_keys(sender_id, device_id)?.is_none() {
db.users
.add_device_keys(sender_id, device_id, device_keys, &db.globals)?;
.add_device_keys(sender_id, device_id, device_keys, &db.rooms, &db.globals)?;
}
}
@ -2518,20 +2518,41 @@ pub async fn sync_events_route(
.unwrap_or(0);
let mut presence_updates = HashMap::new();
let mut device_list_updates = HashSet::new();
for room_id in db.rooms.rooms_joined(&sender_id) {
let room_id = room_id?;
let mut pdus = db
let mut non_timeline_pdus = db
.rooms
.pdus_since(&sender_id, &room_id, since)?
.filter_map(|r| r.ok()) // Filter out buggy events
.filter_map(|r| r.ok()); // Filter out buggy events
// Take the last 10 events for the timeline
let timeline_pdus = non_timeline_pdus
.by_ref()
.rev()
.take(10)
.collect::<Vec<_>>()
.into_iter()
.rev()
.collect::<Vec<_>>();
// They /sync response doesn't always return all messages, so we say the output is
// limited unless there are events in non_timeline_pdus
//let mut limited = false;
let mut state_pdus = Vec::new();
for pdu in non_timeline_pdus {
if pdu.state_key.is_some() {
state_pdus.push(pdu);
}
}
let mut send_member_count = false;
let mut joined_since_last_sync = false;
let mut send_notification_counts = false;
for pdu in &pdus {
for pdu in db.rooms.pdus_since(&sender_id, &room_id, since)?.filter_map(|r| r.ok()) {
send_notification_counts = true;
if pdu.kind == EventType::RoomMember {
send_member_count = true;
@ -2544,8 +2565,8 @@ pub async fn sync_events_route(
.map_err(|_| Error::bad_database("Invalid PDU in database."))?;
if content.membership == ruma::events::room::member::MembershipState::Join {
joined_since_last_sync = true;
// Both send_member_count and joined_since_last_sync are set. There's nothing more
// to do
// Both send_member_count and joined_since_last_sync are set. There's
// nothing more to do
break;
}
}
@ -2574,7 +2595,7 @@ pub async fn sync_events_route(
let content = serde_json::from_value::<
Raw<ruma::events::room::member::MemberEventContent>,
>(pdu.content.clone())
.map_err(|_| Error::bad_database("Invalid member event in database."))?
.expect("Raw::from_value always works")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
@ -2592,7 +2613,7 @@ pub async fn sync_events_route(
.content
.clone(),
)
.map_err(|_| Error::bad_database("Invalid member event in database."))?
.expect("Raw::from_value always works")
.deserialize()
.map_err(|_| {
Error::bad_database("Invalid member event in database.")
@ -2659,15 +2680,7 @@ pub async fn sync_events_route(
None
};
// They /sync response doesn't always return all messages, so we say the output is
// limited unless there are enough events
let mut limited = true;
pdus = pdus.split_off(pdus.len().checked_sub(10).unwrap_or_else(|| {
limited = false;
0
}));
let prev_batch = pdus.first().map_or(Ok::<_, Error>(None), |e| {
let prev_batch = timeline_pdus.first().map_or(Ok::<_, Error>(None), |e| {
Ok(Some(
db.rooms
.get_pdu_count(&e.event_id)?
@ -2676,7 +2689,7 @@ pub async fn sync_events_route(
))
})?;
let room_events = pdus
let room_events = timeline_pdus
.into_iter()
.map(|pdu| pdu.to_sync_room_event())
.collect::<Vec<_>>();
@ -2728,7 +2741,7 @@ pub async fn sync_events_route(
notification_count,
},
timeline: sync_events::Timeline {
limited: limited || joined_since_last_sync,
limited: false || joined_since_last_sync,
prev_batch,
events: room_events,
},
@ -2751,6 +2764,13 @@ pub async fn sync_events_route(
joined_rooms.insert(room_id.clone(), joined_room);
}
// Look for device list updates in this room
device_list_updates.extend(
db.users
.keys_changed(&room_id, since)
.filter_map(|r| r.ok()),
);
// Take presence updates from this room
for (user_id, presence) in
db.rooms
@ -2885,14 +2905,7 @@ pub async fn sync_events_route(
.collect::<Vec<_>>(),
},
device_lists: sync_events::DeviceLists {
changed: if since != 0 {
db.users
.keys_changed(since)
.filter_map(|u| u.ok())
.collect() // Filter out buggy events
} else {
Vec::new()
},
changed: device_list_updates.into_iter().collect(),
left: Vec::new(), // TODO
},
device_one_time_keys_count: Default::default(), // TODO
@ -3450,6 +3463,7 @@ pub fn upload_signing_keys_route(
&master_key,
&body.self_signing_key,
&body.user_signing_key,
&db.rooms,
&db.globals,
)?;
}
@ -3500,8 +3514,14 @@ pub fn upload_signatures_route(
))?
.to_owned(),
);
db.users
.sign_key(&user_id, &key_id, signature, &sender_id, &db.globals)?;
db.users.sign_key(
&user_id,
&key_id,
signature,
&sender_id,
&db.rooms,
&db.globals,
)?;
}
}
}

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."))?;

51
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"),
)?;
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(globals.next_count()?.to_be_bytes(), &*user_id.to_string())?;
.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)?;
}
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(globals.next_count()?.to_be_bytes(), &*user_id.to_string())?;
.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"),
)?;
// 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(globals.next_count()?.to_be_bytes(), &*target_id.to_string())?;
.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.",
)