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Use eventId when saving outliers

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This commit is contained in:
Devin Ragotzy 2021-02-01 12:44:30 -05:00
parent e09be2f7ee
commit 64374b4679
4 changed files with 84 additions and 65 deletions
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2
src/client_server/sync.rs
View file

@ -701,7 +701,7 @@ pub async fn sync_events_route(
let delay = tokio::time::sleep(duration);
tokio::pin!(delay);
tokio::select! {
_ = &mut delay, if delay.is_elapsed() => {}
_ = &mut delay => {}
_ = watcher => {}
}
}

2
src/database.rs
View file

@ -159,7 +159,7 @@ impl Database {
stateid_pduid: db.open_tree("stateid_pduid")?,
pduid_statehash: db.open_tree("pduid_statehash")?,
roomid_statehash: db.open_tree("roomid_statehash")?,
pduid_outlierpdu: db.open_tree("pduid_outlierpdu")?,
eventid_outlierpdu: db.open_tree("eventid_outlierpdu")?,
},
account_data: account_data::AccountData {
roomuserdataid_accountdata: db.open_tree("roomuserdataid_accountdata")?,

76
src/database/rooms.rs
View file

@ -27,10 +27,9 @@ use std::{
convert::{TryFrom, TryInto},
mem,
sync::Arc,
time::Duration,
};
use super::{admin::AdminCommand, sending::Sending};
use super::admin::AdminCommand;
/// The unique identifier of each state group.
///
@ -67,13 +66,16 @@ pub struct Rooms {
pub(super) statekey_short: sled::Tree, // StateKey = EventType + StateKey, Short = Count
pub(super) stateid_pduid: sled::Tree, // StateId = StateHash + Short, PduId = Count (without roomid)
/// Any pdu that has passed the steps up to auth with auth_events.
pub(super) pduid_outlierpdu: sled::Tree,
/// RoomId + EventId -> outlier PDU.
/// Any pdu that has passed the steps 1-8 in the incoming event /federation/send/txn.
pub(super) eventid_outlierpdu: sled::Tree,
}
impl Rooms {
/// Builds a StateMap by iterating over all keys that start
/// with state_hash, this gives the full state for the given state_hash.
///
/// TODO: Should this check for outliers, it does now.
pub fn state_full(
&self,
room_id: &RoomId,
@ -90,7 +92,7 @@ impl Rooms {
Some(b) => serde_json::from_slice::<PduEvent>(&b)
.map_err(|_| Error::bad_database("Invalid PDU in db.")),
None => self
.pduid_outlierpdu
.eventid_outlierpdu
.get(pduid)?
.map(|b| {
serde_json::from_slice::<PduEvent>(&b)
@ -118,6 +120,8 @@ impl Rooms {
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
///
/// TODO: Should this check for outliers, it does now.
pub fn state_get(
&self,
room_id: &RoomId,
@ -149,7 +153,7 @@ impl Rooms {
Some(b) => serde_json::from_slice::<PduEvent>(&b)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?,
None => self
.pduid_outlierpdu
.eventid_outlierpdu
.get(pdu_id)?
.map(|b| {
serde_json::from_slice::<PduEvent>(&b)
@ -260,6 +264,8 @@ impl Rooms {
}
};
// Because of outliers this could also be an eventID but that
// is handled by `state_full`
let pdu_id_short = pdu_id
.splitn(2, |&b| b == 0xff)
.nth(1)
@ -325,9 +331,12 @@ impl Rooms {
Ok(Some(
serde_json::from_slice(&match self.pduid_pdu.get(&pdu_id)? {
Some(b) => b,
None => self.pduid_outlierpdu.get(pdu_id)?.ok_or_else(|| {
Error::bad_database("Event is not in pdu tree or outliers.")
})?,
None => self
.eventid_outlierpdu
.get(event_id.as_bytes())?
.ok_or_else(|| {
Error::bad_database("Event is not in pdu tree or outliers.")
})?,
})
.map_err(|_| Error::bad_database("Invalid PDU in db."))?,
))
@ -342,6 +351,8 @@ impl Rooms {
}
/// Returns the pdu.
///
/// Checks the `eventid_outlierpdu` Tree if not found in the timeline.
pub fn get_pdu(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
self.eventid_pduid
.get(event_id.as_bytes())?
@ -349,9 +360,12 @@ impl Rooms {
Ok(Some(
serde_json::from_slice(&match self.pduid_pdu.get(&pdu_id)? {
Some(b) => b,
None => self.pduid_outlierpdu.get(pdu_id)?.ok_or_else(|| {
Error::bad_database("Event is not in pdu tree or outliers.")
})?,
None => self
.eventid_outlierpdu
.get(event_id.as_bytes())?
.ok_or_else(|| {
Error::bad_database("Event is not in pdu tree or outliers.")
})?,
})
.map_err(|_| Error::bad_database("Invalid PDU in db."))?,
))
@ -443,27 +457,34 @@ impl Rooms {
/// Returns the pdu from the outlier tree.
pub fn get_pdu_outlier(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
if let Some(id) = self.eventid_pduid.get(event_id.as_bytes())? {
self.pduid_outlierpdu.get(id)?.map_or(Ok(None), |pdu| {
self.eventid_outlierpdu
.get(event_id.as_bytes())?
.map_or(Ok(None), |pdu| {
serde_json::from_slice(&pdu).map_err(|_| Error::bad_database("Invalid PDU in db."))
})
} else {
Ok(None)
}
}
/// Returns true if the event_id was previously inserted.
pub fn append_pdu_outlier(&self, pdu_id: &[u8], pdu: &PduEvent) -> Result<bool> {
log::info!("Number of outlier pdu's {}", self.pduid_outlierpdu.len());
pub fn append_pdu_outlier(&self, pdu: &PduEvent) -> Result<bool> {
log::info!(
"Number of outlier pdu's {:#?}",
self.eventid_outlierpdu
.iter()
.map(|pair| {
let (_k, v) = pair.unwrap();
serde_json::from_slice::<PduBuilder>(&v).unwrap()
})
.collect::<Vec<_>>()
);
// we need to be able to find it by event_id
self.eventid_pduid
.insert(pdu.event_id.as_bytes(), &*pdu_id)?;
let mut key = pdu.room_id().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(pdu.event_id().as_bytes());
let res = self
.pduid_outlierpdu
.eventid_outlierpdu
.insert(
pdu_id,
&key,
&*serde_json::to_string(&pdu).expect("PduEvent is always a valid String"),
)
.map(|op| op.is_some())?;
@ -511,9 +532,10 @@ impl Rooms {
}
// We no longer keep this pdu as an outlier
if let Some(id) = self.eventid_pduid.remove(pdu.event_id().as_bytes())? {
self.pduid_outlierpdu.remove(id)?;
}
let mut key = pdu.room_id().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(pdu.event_id().as_bytes());
self.eventid_outlierpdu.remove(key)?;
self.replace_pdu_leaves(&pdu.room_id, leaves)?;

69
src/server_server.rs
View file

@ -18,7 +18,6 @@ use ruma::{
OutgoingRequest,
},
directory::{IncomingFilter, IncomingRoomNetwork},
events::EventType,
serde::to_canonical_value,
signatures::{CanonicalJsonObject, CanonicalJsonValue, PublicKeyMap},
EventId, RoomId, RoomVersionId, ServerName, ServerSigningKeyId, UserId,
@ -638,12 +637,8 @@ pub async fn send_transaction_message_route<'a>(
None
};
let count = db.globals.next_count()?;
let mut pdu_id = pdu.room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
// 6. persist the event as an outlier.
db.rooms.append_pdu_outlier(&pdu_id, &pdu)?;
db.rooms.append_pdu_outlier(&pdu)?;
// Step 9. fetch missing state by calling /state_ids at backwards extremities doing all
// the checks in this list starting at 1. These are not timeline events.
@ -1079,37 +1074,28 @@ pub(crate) async fn fetch_events(
) -> Result<Vec<Arc<PduEvent>>> {
let mut pdus = vec![];
for id in events {
// `get_pdu` checks the outliers tree for us
let pdu = match db.rooms.get_pdu(&id)? {
Some(pdu) => Arc::new(pdu),
None => match db.rooms.get_pdu_outlier(&id)? {
Some(pdu) => Arc::new(pdu),
None => match db
.sending
.send_federation_request(
&db.globals,
origin,
get_event::v1::Request { event_id: &id },
)
.await
{
Ok(res) => {
let (event_id, value) = crate::pdu::gen_event_id_canonical_json(&res.pdu);
let (pdu, _) =
validate_event(db, value, event_id, key_map, origin, auth_cache)
.await
.map_err(|_| Error::Conflict("Authentication of event failed"))?;
None => match db
.sending
.send_federation_request(
&db.globals,
origin,
get_event::v1::Request { event_id: &id },
)
.await
{
Ok(res) => {
let (event_id, value) = crate::pdu::gen_event_id_canonical_json(&res.pdu);
let (pdu, _) = validate_event(db, value, event_id, key_map, origin, auth_cache)
.await
.map_err(|_| Error::Conflict("Authentication of event failed"))?;
// create the pduid for this event but stick it in the outliers DB
let count = db.globals.next_count()?;
let mut pdu_id = pdu.room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
db.rooms.append_pdu_outlier(&pdu_id, &pdu)?;
pdu
}
Err(_) => return Err(Error::BadServerResponse("Failed to fetch event")),
},
db.rooms.append_pdu_outlier(&pdu)?;
pdu
}
Err(_) => return Err(Error::BadServerResponse("Failed to fetch event")),
},
};
pdus.push(pdu);
@ -1193,7 +1179,7 @@ pub(crate) async fn calculate_forward_extremities(
/// This should always be called after the incoming event has been appended to the DB.
///
/// This guarentees that the incoming event will be in the state sets (at least our servers
/// This guarantees that the incoming event will be in the state sets (at least our servers
/// and the sending server).
pub(crate) async fn build_forward_extremity_snapshots(
db: &Database,
@ -1303,7 +1289,18 @@ pub(crate) fn update_resolved_state(
);
}
None => {
error!("We didn't append an event as an outlier\n{:?}", pdu);
let mut pduid = pdu.room_id().as_bytes().to_vec();
pduid.push(0xff);
pduid.extend_from_slice(pdu.event_id().as_bytes());
new_state.insert(
(
ev_type,
state_k.ok_or_else(|| {
Error::Conflict("State contained non state event")
})?,
),
pduid,
);
}
}
}