| 1 | use std::{ |
| 2 | collections::{BTreeMap, BTreeSet}, |
| 3 | sync::{ |
| 4 | Arc, |
| 5 | atomic::{AtomicBool, Ordering}, |
| 6 | }, |
| 7 | time::Duration, |
| 8 | }; |
| 9 | |
| 10 | use futures_util::{StreamExt, stream::FuturesUnordered}; |
| 11 | use matrix_sdk::{ |
| 12 | Client, Room, RoomState, |
| 13 | event_cache::RedecryptorReport, |
| 14 | sliding_sync::{ResponseCommitBatch, ResponseCommitHook}, |
| 15 | }; |
| 16 | use ruma::{ |
| 17 | OwnedEventId, OwnedRoomId, OwnedUserId, RoomId, |
| 18 | events::{ |
| 19 | AnySyncTimelineEvent, ignored_user_list::IgnoredUserListEventContent, |
| 20 | room::encrypted::OriginalSyncRoomEncryptedEvent, |
| 21 | }, |
| 22 | serde::Raw, |
| 23 | }; |
| 24 | use serde_json::Value; |
| 25 | use tokio::sync::{mpsc, oneshot, watch}; |
| 26 | |
| 27 | use super::state::{ |
| 28 | Candidate, Checkpoint, Data, RepairCoverage, SavedEvent, SyncState, Window, id, invalid, now, |
| 29 | }; |
| 30 | use crate::{ |
| 31 | CommandOutput, EngineConfig, Error, ErrorKind, Event, HistoryRepairPolicy, MentionCaptureState, |
| 32 | MentionEntry, MentionGapReason, MentionKey, MentionReason, MentionsCommand, MentionsPage, |
| 33 | MentionsUpdate, TimelineContent, TimelineItem, |
| 34 | engine::{MediaService, MentionsStore, context, executor::EngineBoxFuture}, |
| 35 | normalise::{MediaRegistration, normalise_observed}, |
| 36 | transport::EventSender, |
| 37 | }; |
| 38 | |
| 39 | #[cfg(all(test, feature = "sqlite"))] |
| 40 | #[path = "service_tests.rs"] |
| 41 | mod tests; |
| 42 | |
| 43 | const HOOK_TIMEOUT: Duration = Duration::from_secs(10); |
| 44 | const FLUSH_RETRY_MS: u64 = 60_000; |
| 45 | |
| 46 | #[derive(Clone)] |
| 47 | pub(crate) struct Handle { |
| 48 | requests: mpsc::Sender<Request>, |
| 49 | timed_out: Arc<AtomicBool>, |
| 50 | } |
| 51 | |
| 52 | enum Request { |
| 53 | Batch(ResponseCommitBatch, oneshot::Sender<()>), |
| 54 | Command( |
| 55 | MentionsCommand, |
| 56 | oneshot::Sender<Result<CommandOutput, Error>>, |
| 57 | ), |
| 58 | GetRepairPolicy(oneshot::Sender<Result<HistoryRepairPolicy, Error>>), |
| 59 | SetRepairPolicy(HistoryRepairPolicy, oneshot::Sender<Result<(), Error>>), |
| 60 | GetRepairCoverage(OwnedRoomId, oneshot::Sender<Result<RepairCoverage, Error>>), |
| 61 | RepairResolved(OwnedRoomId, oneshot::Sender<Result<(), Error>>), |
| 62 | Stop(oneshot::Sender<()>), |
| 63 | } |
| 64 | |
| 65 | pub(crate) struct Service { |
| 66 | client: Client, |
| 67 | account: OwnedUserId, |
| 68 | media: Arc<MediaService>, |
| 69 | store: Option<MentionsStore>, |
| 70 | data: Data, |
| 71 | sync: SyncState, |
| 72 | dirty: bool, |
| 73 | flush_after: u64, |
| 74 | ignored: BTreeSet<OwnedUserId>, |
| 75 | leaving: BTreeSet<OwnedRoomId>, |
| 76 | timed_out: Arc<AtomicBool>, |
| 77 | config: EngineConfig, |
| 78 | requests: mpsc::Receiver<Request>, |
| 79 | updates: watch::Sender<MentionsPage>, |
| 80 | recovery_budget: usize, |
| 81 | latest_scan: bool, |
| 82 | recovery_retry: u64, |
| 83 | } |
| 84 | |
| 85 | enum Work { |
| 86 | Capture( |
| 87 | String, |
| 88 | u64, |
| 89 | Result<(crate::EventContext, Vec<MediaRegistration>, Vec<Value>), Error>, |
| 90 | ), |
| 91 | Candidate(String, Result<Value, Error>), |
| 92 | History( |
| 93 | bool, |
| 94 | Option<String>, |
| 95 | Result<ruma::api::client::push::get_notifications::v3::Response, Error>, |
| 96 | ), |
| 97 | } |
| 98 | |
| 99 | impl Handle { |
| 100 | /// never fails, a mentions failure becomes a coverage gap rather than a stalled sync |
| 101 | pub(crate) fn hook(&self) -> ResponseCommitHook { |
| 102 | let handle = self.clone(); |
| 103 | ResponseCommitHook::new(move |batch| { |
| 104 | let handle = handle.clone(); |
| 105 | async move { |
| 106 | let committed = async { |
| 107 | let (reply, response) = oneshot::channel(); |
| 108 | handle |
| 109 | .requests |
| 110 | .send(Request::Batch(batch, reply)) |
| 111 | .await |
| 112 | .ok()?; |
| 113 | response.await.ok() |
| 114 | }; |
| 115 | match matrix_sdk::timeout::timeout(committed, HOOK_TIMEOUT).await { |
| 116 | Ok(Some(())) => {} |
| 117 | Ok(None) => tracing::warn!("mentions service stopped, sync carries on"), |
| 118 | Err(_) => { |
| 119 | handle.timed_out.store(true, Ordering::Release); |
| 120 | tracing::warn!("mentions commit timed out, sync carries on"); |
| 121 | } |
| 122 | } |
| 123 | Ok(()) |
| 124 | } |
| 125 | }) |
| 126 | } |
| 127 | |
| 128 | pub(crate) async fn execute(&self, command: MentionsCommand) -> Result<CommandOutput, Error> { |
| 129 | let (reply, response) = oneshot::channel(); |
| 130 | self.requests |
| 131 | .send(Request::Command(command, reply)) |
| 132 | .await |
| 133 | .map_err(|_| Error::interrupted())?; |
| 134 | response.await.map_err(|_| Error::interrupted())? |
| 135 | } |
| 136 | |
| 137 | pub(crate) async fn repair_policy(&self) -> Result<HistoryRepairPolicy, Error> { |
| 138 | let (reply, response) = oneshot::channel(); |
| 139 | self.requests |
| 140 | .send(Request::GetRepairPolicy(reply)) |
| 141 | .await |
| 142 | .map_err(|_| Error::interrupted())?; |
| 143 | response.await.map_err(|_| Error::interrupted())? |
| 144 | } |
| 145 | |
| 146 | pub(crate) async fn set_repair_policy(&self, policy: HistoryRepairPolicy) -> Result<(), Error> { |
| 147 | let (reply, response) = oneshot::channel(); |
| 148 | self.requests |
| 149 | .send(Request::SetRepairPolicy(policy, reply)) |
| 150 | .await |
| 151 | .map_err(|_| Error::interrupted())?; |
| 152 | response.await.map_err(|_| Error::interrupted())? |
| 153 | } |
| 154 | |
| 155 | pub(crate) async fn repair_coverage( |
| 156 | &self, |
| 157 | room_id: OwnedRoomId, |
| 158 | ) -> Result<RepairCoverage, Error> { |
| 159 | let (reply, response) = oneshot::channel(); |
| 160 | self.requests |
| 161 | .send(Request::GetRepairCoverage(room_id, reply)) |
| 162 | .await |
| 163 | .map_err(|_| Error::interrupted())?; |
| 164 | response.await.map_err(|_| Error::interrupted())? |
| 165 | } |
| 166 | |
| 167 | pub(crate) async fn repair_resolved(&self, room_id: OwnedRoomId) -> Result<(), Error> { |
| 168 | let (reply, response) = oneshot::channel(); |
| 169 | self.requests |
| 170 | .send(Request::RepairResolved(room_id, reply)) |
| 171 | .await |
| 172 | .map_err(|_| Error::interrupted())?; |
| 173 | response.await.map_err(|_| Error::interrupted())? |
| 174 | } |
| 175 | |
| 176 | pub(crate) async fn stop(&self) { |
| 177 | let (reply, response) = oneshot::channel(); |
| 178 | if self.requests.send(Request::Stop(reply)).await.is_ok() { |
| 179 | let _ = response.await; |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | #[cfg(any(feature = "sqlite", feature = "indexeddb"))] |
| 185 | async fn open_store( |
| 186 | store: Option<Result<MentionsStore, Error>>, |
| 187 | ) -> ( |
| 188 | Option<MentionsStore>, |
| 189 | Data, |
| 190 | SyncState, |
| 191 | Vec<MentionGapReason>, |
| 192 | ) { |
| 193 | let mut store = match store { |
| 194 | None => return (None, Data::default(), SyncState::default(), Vec::new()), |
| 195 | Some(Err(error)) => { |
| 196 | tracing::error!(%error, "mentions store unavailable, the inbox runs in memory"); |
| 197 | return ( |
| 198 | None, |
| 199 | Data::default(), |
| 200 | SyncState::default(), |
| 201 | vec![MentionGapReason::StoreFailed], |
| 202 | ); |
| 203 | } |
| 204 | Some(Ok(store)) => store, |
| 205 | }; |
| 206 | let loaded = (|| { |
| 207 | let data: Data = store.read("inbox")?.unwrap_or_default(); |
| 208 | let sync: SyncState = store.read("sync")?.unwrap_or_default(); |
| 209 | if sync.inbox_revision != data.revision { |
| 210 | return Err(Error::new( |
| 211 | ErrorKind::Store, |
| 212 | "mentions checkpoint does not match its inbox", |
| 213 | )); |
| 214 | } |
| 215 | Ok((data, sync)) |
| 216 | })(); |
| 217 | let (data, sync) = match loaded { |
| 218 | Ok(loaded) => loaded, |
| 219 | Err(error) => { |
| 220 | tracing::warn!(%error, "resetting an unreadable mentions inbox"); |
| 221 | if let Err(error) = store.reset().await { |
| 222 | tracing::error!(%error, "mentions store unavailable, the inbox runs in memory"); |
| 223 | return ( |
| 224 | None, |
| 225 | Data::default(), |
| 226 | SyncState::default(), |
| 227 | vec![MentionGapReason::StoreFailed], |
| 228 | ); |
| 229 | } |
| 230 | (Data::default(), SyncState::default()) |
| 231 | } |
| 232 | }; |
| 233 | let gaps = if store.was_reset() { |
| 234 | vec![MentionGapReason::StoreReset] |
| 235 | } else { |
| 236 | Vec::new() |
| 237 | }; |
| 238 | (Some(store), data, sync, gaps) |
| 239 | } |
| 240 | |
| 241 | #[cfg(not(any(feature = "sqlite", feature = "indexeddb")))] |
| 242 | async fn open_store( |
| 243 | store: Option<Result<MentionsStore, Error>>, |
| 244 | ) -> ( |
| 245 | Option<MentionsStore>, |
| 246 | Data, |
| 247 | SyncState, |
| 248 | Vec<MentionGapReason>, |
| 249 | ) { |
| 250 | let gaps = match store { |
| 251 | None => Vec::new(), |
| 252 | Some(Err(_)) => vec![MentionGapReason::StoreFailed], |
| 253 | Some(Ok(store)) => match store {}, |
| 254 | }; |
| 255 | (None, Data::default(), SyncState::default(), gaps) |
| 256 | } |
| 257 | |
| 258 | impl Service { |
| 259 | pub(crate) async fn new( |
| 260 | client: Client, |
| 261 | media: Arc<MediaService>, |
| 262 | store: Option<Result<MentionsStore, Error>>, |
| 263 | config: EngineConfig, |
| 264 | ) -> Result<(Handle, Self, watch::Receiver<MentionsPage>), Error> { |
| 265 | let account = client |
| 266 | .user_id() |
| 267 | .ok_or_else(|| { |
| 268 | Error::new( |
| 269 | ErrorKind::Unauthenticated, |
| 270 | "mentions require an authenticated account", |
| 271 | ) |
| 272 | })? |
| 273 | .to_owned(); |
| 274 | let (store, mut data, sync, gaps) = open_store(store).await; |
| 275 | for reason in &gaps { |
| 276 | data.gap(None, *reason, None); |
| 277 | } |
| 278 | let page = data.page(&account, None, 50)?; |
| 279 | media |
| 280 | .register( |
| 281 | page.entries |
| 282 | .iter() |
| 283 | .filter_map(|entry| data.events.get(&id(&entry.key))) |
| 284 | .flat_map(|event| event.media.clone()) |
| 285 | .collect(), |
| 286 | ) |
| 287 | .await; |
| 288 | let (updates, receiver) = watch::channel(page); |
| 289 | let (sender, requests) = mpsc::channel(config.command_capacity.max(1)); |
| 290 | let timed_out = Arc::new(AtomicBool::new(false)); |
| 291 | let mut service = Self { |
| 292 | client, |
| 293 | account, |
| 294 | media, |
| 295 | store, |
| 296 | data, |
| 297 | sync, |
| 298 | dirty: !gaps.is_empty(), |
| 299 | flush_after: 0, |
| 300 | ignored: BTreeSet::new(), |
| 301 | leaving: BTreeSet::new(), |
| 302 | timed_out: timed_out.clone(), |
| 303 | config, |
| 304 | requests, |
| 305 | updates, |
| 306 | recovery_budget: 20, |
| 307 | latest_scan: true, |
| 308 | recovery_retry: 0, |
| 309 | }; |
| 310 | service.ignored = service.ignored_users().await; |
| 311 | Ok(( |
| 312 | Handle { |
| 313 | requests: sender, |
| 314 | timed_out, |
| 315 | }, |
| 316 | service, |
| 317 | receiver, |
| 318 | )) |
| 319 | } |
| 320 | |
| 321 | async fn ignored_users(&self) -> BTreeSet<OwnedUserId> { |
| 322 | self.client |
| 323 | .account() |
| 324 | .account_data::<IgnoredUserListEventContent>() |
| 325 | .await |
| 326 | .ok() |
| 327 | .flatten() |
| 328 | .and_then(|raw| raw.deserialize().ok()) |
| 329 | .map(|content| content.ignored_users.into_keys().collect()) |
| 330 | .unwrap_or_default() |
| 331 | } |
| 332 | |
| 333 | async fn publish(&mut self) { |
| 334 | let Ok(page) = self.data.page(&self.account, None, 50) else { |
| 335 | return; |
| 336 | }; |
| 337 | self.media |
| 338 | .register( |
| 339 | page.entries |
| 340 | .iter() |
| 341 | .filter_map(|entry| self.data.events.get(&id(&entry.key))) |
| 342 | .flat_map(|event| event.media.clone()) |
| 343 | .collect(), |
| 344 | ) |
| 345 | .await; |
| 346 | self.updates.send_replace(page); |
| 347 | } |
| 348 | |
| 349 | /// writes the sync record, and the inbox with it when `dirty`, in one commit so a |
| 350 | /// checkpoint never lands without the inbox changes it covers |
| 351 | async fn flush(&mut self) -> Result<(), Error> { |
| 352 | if self.dirty { |
| 353 | self.advance()?; |
| 354 | } |
| 355 | #[cfg(any(feature = "sqlite", feature = "indexeddb"))] |
| 356 | if let Some(store) = &mut self.store { |
| 357 | use super::state::json_len; |
| 358 | use super::store::Write; |
| 359 | |
| 360 | let encode = |error| { |
| 361 | Error::with_source( |
| 362 | ErrorKind::Store, |
| 363 | "encoding the mentions inbox failed", |
| 364 | error, |
| 365 | ) |
| 366 | }; |
| 367 | let sync = serde_json::to_value(&self.sync).map_err(encode)?; |
| 368 | let mut writes = Vec::new(); |
| 369 | if self.dirty { |
| 370 | let available = store |
| 371 | .available(&["inbox", "sync"]) |
| 372 | .saturating_sub(store.sealed_bound("sync", json_len(&sync))); |
| 373 | let mut size = store.sealed_bound("inbox", json_len(&self.data)); |
| 374 | while size > available { |
| 375 | let Some(freed) = self.data.evict_one() else { |
| 376 | break; |
| 377 | }; |
| 378 | size = size.saturating_sub(freed * 3); |
| 379 | } |
| 380 | writes.push(Write::Set( |
| 381 | "inbox".to_owned(), |
| 382 | serde_json::to_value(&self.data).map_err(encode)?, |
| 383 | )); |
| 384 | } |
| 385 | writes.push(Write::Set("sync".to_owned(), sync)); |
| 386 | store.commit(store.revision(), writes).await?; |
| 387 | } |
| 388 | if self.dirty { |
| 389 | self.dirty = false; |
| 390 | self.publish().await; |
| 391 | } |
| 392 | Ok(()) |
| 393 | } |
| 394 | |
| 395 | fn advance(&mut self) -> Result<(), Error> { |
| 396 | self.data.revision = self |
| 397 | .data |
| 398 | .revision |
| 399 | .checked_add(1) |
| 400 | .ok_or_else(|| invalid("mentions revision exhausted"))?; |
| 401 | self.data.bound( |
| 402 | self.config.max_mentions_entries, |
| 403 | self.config.max_mention_context_events, |
| 404 | self.config.max_mention_candidates, |
| 405 | ); |
| 406 | self.sync.inbox_revision = self.data.revision; |
| 407 | Ok(()) |
| 408 | } |
| 409 | |
| 410 | async fn apply(&mut self, data: Option<Data>, sync: Option<SyncState>) -> Result<(), Error> { |
| 411 | let dirty = self.dirty; |
| 412 | let previous_data = data.map(|data| std::mem::replace(&mut self.data, data)); |
| 413 | let previous_sync = sync.map(|sync| std::mem::replace(&mut self.sync, sync)); |
| 414 | self.dirty |= previous_data.is_some(); |
| 415 | let result = self.flush().await; |
| 416 | if result.is_err() { |
| 417 | if let Some(data) = previous_data { |
| 418 | self.data = data; |
| 419 | } |
| 420 | if let Some(sync) = previous_sync { |
| 421 | self.sync = sync; |
| 422 | } |
| 423 | self.dirty = dirty; |
| 424 | } |
| 425 | result |
| 426 | } |
| 427 | |
| 428 | async fn store_failed(&mut self, error: Error) { |
| 429 | tracing::error!(%error, "saving the mentions inbox failed"); |
| 430 | self.data.gap(None, MentionGapReason::StoreFailed, None); |
| 431 | self.dirty = true; |
| 432 | self.flush_after = now().saturating_add(FLUSH_RETRY_MS); |
| 433 | self.publish().await; |
| 434 | } |
| 435 | |
| 436 | async fn set_repair_policy(&mut self, policy: HistoryRepairPolicy) -> Result<(), Error> { |
| 437 | let mut next = self.data.clone(); |
| 438 | next.repair_policy = policy; |
| 439 | self.apply(Some(next), None).await |
| 440 | } |
| 441 | |
| 442 | async fn repair_resolved(&mut self, room_id: OwnedRoomId) -> Result<(), Error> { |
| 443 | let mut sync = self.sync.clone(); |
| 444 | let coverage = sync.repair_coverage.entry(room_id.clone()).or_default(); |
| 445 | coverage.boundary_ms = None; |
| 446 | coverage.last_confirmed_ms = Some(now()); |
| 447 | coverage.reliable = false; |
| 448 | coverage.unresolved = false; |
| 449 | sync.observed_rooms.insert(room_id); |
| 450 | self.apply(None, Some(sync)).await |
| 451 | } |
| 452 | |
| 453 | async fn command(&mut self, command: MentionsCommand) -> Result<CommandOutput, Error> { |
| 454 | match command { |
| 455 | MentionsCommand::Page { cursor, limit } => { |
| 456 | let page = self.data.page(&self.account, cursor.as_deref(), limit)?; |
| 457 | self.media |
| 458 | .register( |
| 459 | page.entries |
| 460 | .iter() |
| 461 | .filter_map(|entry| self.data.events.get(&id(&entry.key))) |
| 462 | .flat_map(|event| event.media.clone()) |
| 463 | .collect(), |
| 464 | ) |
| 465 | .await; |
| 466 | Ok(CommandOutput::MentionsPage(page)) |
| 467 | } |
| 468 | MentionsCommand::Context(key) => { |
| 469 | let (context, media) = self.data.context(&key)?; |
| 470 | self.media.register(media).await; |
| 471 | Ok(CommandOutput::MentionContext(context)) |
| 472 | } |
| 473 | MentionsCommand::RetryContext(key) => { |
| 474 | let room = self |
| 475 | .client |
| 476 | .get_room(&key.room_id) |
| 477 | .filter(|room| room.state() == RoomState::Joined) |
| 478 | .ok_or_else(|| { |
| 479 | Error::new( |
| 480 | ErrorKind::Forbidden, |
| 481 | "saved context cannot be refetched after leaving the room", |
| 482 | ) |
| 483 | })?; |
| 484 | drop(room); |
| 485 | let mut next = self.data.clone(); |
| 486 | let entry = next |
| 487 | .entries |
| 488 | .get_mut(&id(&key)) |
| 489 | .ok_or_else(|| Error::new(ErrorKind::EventNotFound, "mention was not found"))?; |
| 490 | entry.capture = MentionCaptureState::Pending; |
| 491 | entry.revision = self.data.revision + 1; |
| 492 | next.windows.entry(id(&key)).or_insert(Window { |
| 493 | before: Vec::new(), |
| 494 | target: Some(id(&key)), |
| 495 | after: Vec::new(), |
| 496 | start: None, |
| 497 | end: None, |
| 498 | }); |
| 499 | self.apply(Some(next), None).await?; |
| 500 | let (context, media) = self.data.context(&key)?; |
| 501 | self.media.register(media).await; |
| 502 | Ok(CommandOutput::MentionContext(context)) |
| 503 | } |
| 504 | MentionsCommand::SetRead { keys, read } => { |
| 505 | let mut next = self.data.clone(); |
| 506 | for key in keys { |
| 507 | if let Some(entry) = next.entries.get_mut(&id(&key)) { |
| 508 | entry.read = read; |
| 509 | entry.revision = self.data.revision + 1; |
| 510 | } |
| 511 | } |
| 512 | self.apply(Some(next), None).await?; |
| 513 | Ok(CommandOutput::Done) |
| 514 | } |
| 515 | MentionsCommand::ReadThrough(boundary) => { |
| 516 | if boundary.account != self.account || boundary.revision > self.data.revision { |
| 517 | return Err(invalid("invalid mentions read boundary")); |
| 518 | } |
| 519 | let mut next = self.data.clone(); |
| 520 | for entry in next |
| 521 | .entries |
| 522 | .values_mut() |
| 523 | .filter(|entry| entry.discovery_revision <= boundary.revision) |
| 524 | { |
| 525 | entry.read = true; |
| 526 | entry.revision = self.data.revision + 1; |
| 527 | } |
| 528 | self.apply(Some(next), None).await?; |
| 529 | Ok(CommandOutput::Done) |
| 530 | } |
| 531 | MentionsCommand::Recover => { |
| 532 | self.recovery_budget = 20; |
| 533 | self.latest_scan = true; |
| 534 | self.recovery_retry = 0; |
| 535 | let mut next = self.data.clone(); |
| 536 | next.coverage.recovering = true; |
| 537 | next.coverage.historical_supported = None; |
| 538 | self.apply(Some(next), None).await?; |
| 539 | Ok(CommandOutput::Done) |
| 540 | } |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | fn observable(&self, room_id: &RoomId) -> Option<Room> { |
| 545 | self.client |
| 546 | .get_room(room_id) |
| 547 | .filter(|room| room.state() == RoomState::Joined || self.leaving.contains(room_id)) |
| 548 | } |
| 549 | |
| 550 | async fn batch(&mut self, batch: ResponseCommitBatch) { |
| 551 | let checkpoint = self.sync.checkpoints.get(&batch.connection_id).cloned(); |
| 552 | if checkpoint |
| 553 | .as_ref() |
| 554 | .is_some_and(|checkpoint| checkpoint.pos == batch.next_pos) |
| 555 | { |
| 556 | return; |
| 557 | } |
| 558 | self.ignored = self.ignored_users().await; |
| 559 | self.leaving = batch.response.rooms.left.keys().cloned().collect(); |
| 560 | let mut next = self.data.clone(); |
| 561 | let mut sync = self.sync.clone(); |
| 562 | if self.timed_out.swap(false, Ordering::AcqRel) { |
| 563 | next.gap(None, MentionGapReason::HookTimedOut, None); |
| 564 | } |
| 565 | let observed_at_ms = now(); |
| 566 | // a crash after the commit but before the sdk saved `pos` replays from the |
| 567 | // previous position, and that response is a superset of the one committed |
| 568 | let continuous = match &checkpoint { |
| 569 | None => batch.previous_pos.is_none(), |
| 570 | Some(checkpoint) => { |
| 571 | batch.previous_pos.as_ref() == Some(&checkpoint.pos) |
| 572 | || batch.previous_pos == checkpoint.previous |
| 573 | } |
| 574 | }; |
| 575 | if !continuous { |
| 576 | next.gap(None, MentionGapReason::SyncDiscontinuity, None); |
| 577 | let observed_rooms: Vec<_> = sync.observed_rooms.iter().cloned().collect(); |
| 578 | for room_id in observed_rooms { |
| 579 | Self::mark_unresolved(&mut sync, &room_id, observed_at_ms); |
| 580 | } |
| 581 | } |
| 582 | for (room_id, raw) in &batch.raw_rooms { |
| 583 | if raw.limited && sync.observed_rooms.contains(room_id) { |
| 584 | next.gap( |
| 585 | Some(room_id.clone()), |
| 586 | MentionGapReason::LimitedTimeline, |
| 587 | raw.prev_batch.clone(), |
| 588 | ); |
| 589 | } |
| 590 | } |
| 591 | let room_ids: BTreeSet<_> = batch |
| 592 | .raw_rooms |
| 593 | .keys() |
| 594 | .chain(batch.response.rooms.joined.keys()) |
| 595 | .chain(batch.response.rooms.left.keys()) |
| 596 | .cloned() |
| 597 | .collect(); |
| 598 | for room_id in &room_ids { |
| 599 | if self.observable(room_id).is_none() { |
| 600 | continue; |
| 601 | } |
| 602 | let previously_observed = sync.observed_rooms.contains(room_id); |
| 603 | let limited = batch.raw_rooms.get(room_id).is_some_and(|raw| raw.limited); |
| 604 | if !continuous || limited || !previously_observed { |
| 605 | Self::mark_unresolved(&mut sync, room_id, observed_at_ms); |
| 606 | } else { |
| 607 | let coverage = sync.repair_coverage.entry(room_id.clone()).or_default(); |
| 608 | if !coverage.unresolved { |
| 609 | coverage.last_confirmed_ms = Some(observed_at_ms); |
| 610 | } |
| 611 | coverage.reliable = false; |
| 612 | } |
| 613 | sync.observed_rooms.insert(room_id.clone()); |
| 614 | let mut observed = BTreeMap::new(); |
| 615 | let mut latest_anchor = None; |
| 616 | if let Some(raw) = batch.raw_rooms.get(room_id) { |
| 617 | for event in &raw.timeline { |
| 618 | let Ok(value) = serde_json::from_str::<Value>(event.json().get()) else { |
| 619 | continue; |
| 620 | }; |
| 621 | if let Some(event_id) = value["event_id"].as_str() { |
| 622 | latest_anchor = event_id.parse::<OwnedEventId>().ok(); |
| 623 | observed.insert(event_id.to_owned(), value); |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | if let Some(latest_anchor) = latest_anchor { |
| 628 | sync.repair_coverage |
| 629 | .entry(room_id.clone()) |
| 630 | .or_default() |
| 631 | .latest_anchor = Some(latest_anchor); |
| 632 | } |
| 633 | let processed = batch |
| 634 | .response |
| 635 | .rooms |
| 636 | .joined |
| 637 | .get(room_id) |
| 638 | .map(|update| &update.timeline.events) |
| 639 | .into_iter() |
| 640 | .chain( |
| 641 | batch |
| 642 | .response |
| 643 | .rooms |
| 644 | .left |
| 645 | .get(room_id) |
| 646 | .map(|update| &update.timeline.events), |
| 647 | ) |
| 648 | .flatten(); |
| 649 | for event in processed { |
| 650 | let Ok(value) = serde_json::from_str::<Value>(event.raw().json().get()) else { |
| 651 | continue; |
| 652 | }; |
| 653 | if let Some(event_id) = value["event_id"].as_str() { |
| 654 | observed.insert(event_id.to_owned(), value); |
| 655 | } |
| 656 | } |
| 657 | let mut observed: Vec<_> = observed.into_values().collect(); |
| 658 | observed.sort_by_key(|value| value["origin_server_ts"].as_u64().unwrap_or(0)); |
| 659 | for value in observed { |
| 660 | self.observe(&mut next, room_id, value).await; |
| 661 | } |
| 662 | } |
| 663 | for room_id in batch.response.rooms.left.keys() { |
| 664 | next.gap(Some(room_id.clone()), MentionGapReason::RoomLeft, None); |
| 665 | next.candidates |
| 666 | .retain(|_, candidate| &candidate.room_id != room_id); |
| 667 | let revision = next.revision + 1; |
| 668 | for entry in next.entries.values_mut().filter(|entry| { |
| 669 | &entry.key.room_id == room_id && entry.capture != MentionCaptureState::Unavailable |
| 670 | }) { |
| 671 | entry.capture = MentionCaptureState::Unavailable; |
| 672 | entry.revision = revision; |
| 673 | } |
| 674 | } |
| 675 | let reevaluate: Vec<_> = next |
| 676 | .entries |
| 677 | .values() |
| 678 | .filter(|entry| room_ids.contains(&entry.key.room_id)) |
| 679 | .filter_map(|entry| { |
| 680 | next.events |
| 681 | .get(&id(&entry.key)) |
| 682 | .and_then(|event| event.raw.clone()) |
| 683 | .map(|raw| (entry.key.room_id.clone(), raw)) |
| 684 | }) |
| 685 | .collect(); |
| 686 | for (room_id, raw) in reevaluate { |
| 687 | self.observe(&mut next, &room_id, raw).await; |
| 688 | } |
| 689 | self.filter_ignored(&mut next); |
| 690 | self.leaving.clear(); |
| 691 | sync.checkpoints.insert( |
| 692 | batch.connection_id, |
| 693 | Checkpoint { |
| 694 | pos: batch.next_pos, |
| 695 | previous: batch.previous_pos, |
| 696 | }, |
| 697 | ); |
| 698 | let changed = next != self.data; |
| 699 | if changed { |
| 700 | self.data = next; |
| 701 | self.dirty = true; |
| 702 | } |
| 703 | self.sync = sync; |
| 704 | if now() < self.flush_after { |
| 705 | if changed && self.advance().is_ok() { |
| 706 | self.publish().await; |
| 707 | } |
| 708 | } else if let Err(error) = self.flush().await { |
| 709 | self.store_failed(error).await; |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | fn mark_unresolved(sync: &mut SyncState, room_id: &OwnedRoomId, observed_at_ms: u64) { |
| 714 | let coverage = sync.repair_coverage.entry(room_id.clone()).or_default(); |
| 715 | if !coverage.unresolved { |
| 716 | coverage.boundary_ms = Some(observed_at_ms); |
| 717 | coverage.unresolved = true; |
| 718 | } |
| 719 | coverage.reliable = false; |
| 720 | } |
| 721 | |
| 722 | fn filter_ignored(&self, next: &mut Data) -> bool { |
| 723 | let removed: Vec<_> = next |
| 724 | .entries |
| 725 | .iter() |
| 726 | .filter(|(_, entry)| { |
| 727 | matches!(&entry.event, TimelineItem::Event(event) if self.ignored.contains(&event.sender.user_id)) |
| 728 | }) |
| 729 | .map(|(key, _)| key.clone()) |
| 730 | .collect(); |
| 731 | for key in &removed { |
| 732 | next.entries.remove(key); |
| 733 | next.windows.remove(key); |
| 734 | } |
| 735 | next.collect_events(); |
| 736 | !removed.is_empty() |
| 737 | } |
| 738 | |
| 739 | async fn observe(&self, data: &mut Data, room_id: &OwnedRoomId, mut value: Value) { |
| 740 | let Some(event_id) = value["event_id"] |
| 741 | .as_str() |
| 742 | .and_then(|value| value.parse().ok()) |
| 743 | else { |
| 744 | return; |
| 745 | }; |
| 746 | let key = MentionKey { |
| 747 | room_id: room_id.clone(), |
| 748 | event_id, |
| 749 | }; |
| 750 | let identity = id(&key); |
| 751 | let Some(timestamp) = value["origin_server_ts"].as_u64() else { |
| 752 | return; |
| 753 | }; |
| 754 | data.coverage.earliest_timestamp_ms = Some( |
| 755 | data.coverage |
| 756 | .earliest_timestamp_ms |
| 757 | .map_or(timestamp, |old| old.min(timestamp)), |
| 758 | ); |
| 759 | if value["type"] == "m.room.redaction" { |
| 760 | if let Some(target) = value["redacts"] |
| 761 | .as_str() |
| 762 | .or_else(|| value["content"]["redacts"].as_str()) |
| 763 | .and_then(|value| value.parse().ok()) |
| 764 | { |
| 765 | let target = id(&MentionKey { |
| 766 | room_id: room_id.clone(), |
| 767 | event_id: target, |
| 768 | }); |
| 769 | data.redacted.insert(target.clone(), timestamp); |
| 770 | data.entries.remove(&target); |
| 771 | data.windows.remove(&target); |
| 772 | data.candidates.remove(&target); |
| 773 | data.edits.remove(&target); |
| 774 | data.candidates.retain(|_, candidate| { |
| 775 | candidate.room_id != *room_id |
| 776 | || candidate.raw["content"]["m.relates_to"]["event_id"].as_str() |
| 777 | != target.split_once('\n').map(|(_, event)| event) |
| 778 | }); |
| 779 | if let Some(saved) = data.events.get_mut(&target) { |
| 780 | redact(saved); |
| 781 | } |
| 782 | data.touch_contexts(&target); |
| 783 | } |
| 784 | return; |
| 785 | } |
| 786 | if data.redacted.contains_key(&identity) |
| 787 | || value["unsigned"].get("redacted_because").is_some() |
| 788 | { |
| 789 | data.redacted.insert(identity.clone(), timestamp); |
| 790 | data.entries.remove(&identity); |
| 791 | data.windows.remove(&identity); |
| 792 | data.candidates.remove(&identity); |
| 793 | if let Some(saved) = data.events.get_mut(&identity) { |
| 794 | redact(saved); |
| 795 | } |
| 796 | data.touch_contexts(&identity); |
| 797 | return; |
| 798 | } |
| 799 | if value["content"]["m.relates_to"]["rel_type"] == "m.replace" { |
| 800 | if let Some(target) = value["content"]["m.relates_to"]["event_id"] |
| 801 | .as_str() |
| 802 | .and_then(|value| value.parse().ok()) |
| 803 | { |
| 804 | let target = id(&MentionKey { |
| 805 | room_id: room_id.clone(), |
| 806 | event_id: target, |
| 807 | }); |
| 808 | if data.redacted.contains_key(&target) { |
| 809 | return; |
| 810 | } |
| 811 | let newer = data.edits.get(&target).is_none_or(|old| { |
| 812 | (old["origin_server_ts"].as_u64(), old["event_id"].as_str()) |
| 813 | < (Some(timestamp), value["event_id"].as_str()) |
| 814 | }); |
| 815 | if newer { |
| 816 | if let Some(original) = |
| 817 | data.events.get(&target).and_then(|saved| saved.raw.clone()) |
| 818 | { |
| 819 | if original["sender"] != value["sender"] { |
| 820 | return; |
| 821 | } |
| 822 | data.edits.insert(target.clone(), value.clone()); |
| 823 | value = edited(original, &value); |
| 824 | return Box::pin(self.observe(data, room_id, value)).await; |
| 825 | } |
| 826 | data.candidates |
| 827 | .entry(identity) |
| 828 | .and_modify(|candidate| candidate.raw = value.clone()) |
| 829 | .or_insert_with(|| Candidate::new(room_id.clone(), value, 0)); |
| 830 | } |
| 831 | } |
| 832 | return; |
| 833 | } |
| 834 | if let Some(edit) = value["unsigned"]["m.relations"].get("m.replace").cloned() { |
| 835 | if edit["sender"] == value["sender"] |
| 836 | && edit["content"]["m.new_content"].is_object() |
| 837 | && edit["content"]["m.relates_to"]["event_id"] |
| 838 | .as_str() |
| 839 | .is_none_or(|target| target == key.event_id.as_str()) |
| 840 | && edit["origin_server_ts"].as_u64().is_some() |
| 841 | && data.edits.get(&identity).is_none_or(|old| { |
| 842 | (old["origin_server_ts"].as_u64(), old["event_id"].as_str()) |
| 843 | < (edit["origin_server_ts"].as_u64(), edit["event_id"].as_str()) |
| 844 | }) |
| 845 | { |
| 846 | data.edits.insert(identity.clone(), edit); |
| 847 | } |
| 848 | } |
| 849 | if let Some(edit) = data.edits.get(&identity) { |
| 850 | if value["sender"] == edit["sender"] { |
| 851 | value = edited(value, edit); |
| 852 | } |
| 853 | } |
| 854 | if let Some(edit) = value["unsigned"].get("macltok_edit").cloned() { |
| 855 | data.edits.insert(identity.clone(), edit); |
| 856 | } |
| 857 | if value["type"] == "m.room.encrypted" { |
| 858 | data.candidates |
| 859 | .entry(identity) |
| 860 | .or_insert_with(|| Candidate::new(room_id.clone(), value, 0)); |
| 861 | return; |
| 862 | } |
| 863 | let Some((item, media)) = normalise_observed(&value, Some(&self.account), &identity) else { |
| 864 | return; |
| 865 | }; |
| 866 | self.supplement(data, &key, &item, &media, &value); |
| 867 | let (reasons, suppressed, unresolved) = self.classify(data, room_id, &value).await; |
| 868 | if unresolved { |
| 869 | data.candidates |
| 870 | .entry(identity.clone()) |
| 871 | .or_insert_with(|| Candidate::new(room_id.clone(), value.clone(), now() + 30_000)); |
| 872 | } else { |
| 873 | data.candidates.remove(&identity); |
| 874 | } |
| 875 | if reasons.is_empty() { |
| 876 | data.entries.remove(&identity); |
| 877 | data.windows.remove(&identity); |
| 878 | if data.events.contains_key(&identity) || data.edits.contains_key(&identity) { |
| 879 | data.events.insert( |
| 880 | identity, |
| 881 | SavedEvent { |
| 882 | item, |
| 883 | media, |
| 884 | raw: Some(value), |
| 885 | }, |
| 886 | ); |
| 887 | } |
| 888 | return; |
| 889 | } |
| 890 | let previous = data.entries.get(&identity); |
| 891 | let changed = previous.is_none_or(|entry| { |
| 892 | entry.event != item |
| 893 | || entry.reasons != reasons |
| 894 | || entry.notification_suppressed != suppressed |
| 895 | }); |
| 896 | let entry = MentionEntry { |
| 897 | key, |
| 898 | timestamp_ms: timestamp, |
| 899 | discovered_at_ms: previous.map_or_else(now, |entry| entry.discovered_at_ms), |
| 900 | discovery_revision: previous |
| 901 | .map_or(data.revision + 1, |entry| entry.discovery_revision), |
| 902 | revision: if changed { |
| 903 | data.revision + 1 |
| 904 | } else { |
| 905 | previous.unwrap().revision |
| 906 | }, |
| 907 | event: item.clone(), |
| 908 | reasons, |
| 909 | read: previous.is_some_and(|entry| entry.read), |
| 910 | capture: previous.map_or(MentionCaptureState::Pending, |entry| { |
| 911 | if changed { |
| 912 | MentionCaptureState::Pending |
| 913 | } else { |
| 914 | entry.capture.clone() |
| 915 | } |
| 916 | }), |
| 917 | room_name: self.client.get_room(room_id).and_then(|room| room.name()), |
| 918 | notification_suppressed: suppressed, |
| 919 | }; |
| 920 | data.entries.insert(identity.clone(), entry); |
| 921 | data.windows.entry(identity.clone()).or_insert(Window { |
| 922 | before: Vec::new(), |
| 923 | target: Some(identity.clone()), |
| 924 | after: Vec::new(), |
| 925 | start: None, |
| 926 | end: None, |
| 927 | }); |
| 928 | data.events.insert( |
| 929 | identity, |
| 930 | SavedEvent { |
| 931 | item, |
| 932 | media, |
| 933 | raw: Some(value), |
| 934 | }, |
| 935 | ); |
| 936 | } |
| 937 | |
| 938 | fn supplement( |
| 939 | &self, |
| 940 | data: &mut Data, |
| 941 | key: &MentionKey, |
| 942 | item: &TimelineItem, |
| 943 | media: &[MediaRegistration], |
| 944 | raw: &Value, |
| 945 | ) { |
| 946 | let TimelineItem::Event(event) = item else { |
| 947 | return; |
| 948 | }; |
| 949 | let identity = id(key); |
| 950 | if data |
| 951 | .events |
| 952 | .get(&identity) |
| 953 | .is_some_and(|saved| saved.item != *item) |
| 954 | { |
| 955 | data.touch_contexts(&identity); |
| 956 | } |
| 957 | let mut retained = data.events.contains_key(&identity); |
| 958 | let saved_events = &data.events; |
| 959 | for (target, window) in &mut data.windows { |
| 960 | let Some(entry) = data.entries.get_mut(target) else { |
| 961 | continue; |
| 962 | }; |
| 963 | if entry.key.room_id != key.room_id |
| 964 | || (entry.timestamp_ms, target.as_str()) >= (event.timestamp_ms, identity.as_str()) |
| 965 | || window.after.contains(&identity) |
| 966 | { |
| 967 | continue; |
| 968 | } |
| 969 | let previous = window.after.clone(); |
| 970 | window.after.push(identity.clone()); |
| 971 | window.after.sort_by_key(|key| { |
| 972 | if key == &identity { |
| 973 | (event.timestamp_ms, key.clone()) |
| 974 | } else { |
| 975 | ( |
| 976 | saved_events |
| 977 | .get(key) |
| 978 | .and_then(|saved| match &saved.item { |
| 979 | TimelineItem::Event(event) => Some(event.timestamp_ms), |
| 980 | _ => None, |
| 981 | }) |
| 982 | .unwrap_or(0), |
| 983 | key.clone(), |
| 984 | ) |
| 985 | } |
| 986 | }); |
| 987 | window.after.truncate(10); |
| 988 | if window.after == previous { |
| 989 | continue; |
| 990 | } |
| 991 | window.end = None; |
| 992 | retained |= window.after.contains(&identity); |
| 993 | if entry.capture == MentionCaptureState::Partial |
| 994 | && window.after.len() == 10 |
| 995 | && (window.before.len() == 10 || window.start.is_none()) |
| 996 | { |
| 997 | entry.capture = MentionCaptureState::Ready; |
| 998 | } |
| 999 | entry.revision = data.revision + 1; |
| 1000 | } |
| 1001 | if retained { |
| 1002 | data.events.insert( |
| 1003 | identity, |
| 1004 | SavedEvent { |
| 1005 | item: item.clone(), |
| 1006 | media: media.to_vec(), |
| 1007 | raw: Some(raw.clone()), |
| 1008 | }, |
| 1009 | ); |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | async fn classify( |
| 1014 | &self, |
| 1015 | data: &Data, |
| 1016 | room_id: &OwnedRoomId, |
| 1017 | value: &Value, |
| 1018 | ) -> (Vec<MentionReason>, bool, bool) { |
| 1019 | let Some(sender) = value["sender"] |
| 1020 | .as_str() |
| 1021 | .and_then(|sender| sender.parse::<OwnedUserId>().ok()) |
| 1022 | else { |
| 1023 | return (vec![], false, false); |
| 1024 | }; |
| 1025 | if sender == self.account |
| 1026 | || self.ignored.contains(&sender) |
| 1027 | || value["type"] != "m.room.message" |
| 1028 | { |
| 1029 | return (vec![], false, false); |
| 1030 | } |
| 1031 | let Some(room) = self.observable(room_id) else { |
| 1032 | return (vec![], false, false); |
| 1033 | }; |
| 1034 | let raw: Raw<AnySyncTimelineEvent> = |
| 1035 | Raw::from_json_string(value.to_string()).expect("serialized event"); |
| 1036 | let actions = room.event_push_actions(&raw).await.ok().flatten(); |
| 1037 | let notify = actions.as_ref().is_some_and(|actions| { |
| 1038 | actions |
| 1039 | .iter() |
| 1040 | .any(|action| matches!(action, ruma::push::Action::Notify)) |
| 1041 | }); |
| 1042 | let highlight = actions.as_ref().is_some_and(|actions| actions.iter().any(|action| matches!(action, ruma::push::Action::SetTweak(ruma::push::Tweak::Highlight(value)) if value != &ruma::push::HighlightTweakValue::No))); |
| 1043 | let direct = value["content"]["m.mentions"]["user_ids"] |
| 1044 | .as_array() |
| 1045 | .is_some_and(|users| { |
| 1046 | users |
| 1047 | .iter() |
| 1048 | .any(|user| user.as_str() == Some(self.account.as_str())) |
| 1049 | }); |
| 1050 | let mut reasons = Vec::new(); |
| 1051 | if direct { |
| 1052 | reasons.push(MentionReason::Direct); |
| 1053 | } |
| 1054 | let mut unresolved = false; |
| 1055 | if let Some(reply) = value["content"]["m.relates_to"]["m.in_reply_to"]["event_id"] |
| 1056 | .as_str() |
| 1057 | .and_then(|value| value.parse().ok()) |
| 1058 | { |
| 1059 | let target = data.events.get(&id(&MentionKey { |
| 1060 | room_id: room_id.clone(), |
| 1061 | event_id: reply, |
| 1062 | })); |
| 1063 | let reply_to_self = value["unsigned"]["macltok_reply_sender"].as_str() == Some(self.account.as_str()) || target.is_some_and(|target| matches!(&target.item, TimelineItem::Event(event) if event.sender.user_id == self.account)); |
| 1064 | if reply_to_self && (direct || (notify && highlight)) { |
| 1065 | reasons.push(MentionReason::Reply); |
| 1066 | } else if target.is_none() |
| 1067 | && value["unsigned"]["macltok_reply_sender"].as_str().is_none() |
| 1068 | && (direct || (notify && highlight)) |
| 1069 | { |
| 1070 | unresolved = true; |
| 1071 | } |
| 1072 | } |
| 1073 | if value["content"]["m.mentions"]["room"] == true { |
| 1074 | match room.power_levels().await { |
| 1075 | Ok(levels) if levels.user_can_trigger_room_notification(&sender) => { |
| 1076 | if notify && highlight { |
| 1077 | reasons.push(MentionReason::Room); |
| 1078 | } else if actions.is_none() { |
| 1079 | unresolved = true; |
| 1080 | } |
| 1081 | } |
| 1082 | Err(_) => unresolved = true, |
| 1083 | _ => {} |
| 1084 | } |
| 1085 | } |
| 1086 | (reasons, !notify, unresolved) |
| 1087 | } |
| 1088 | |
| 1089 | pub(crate) async fn run(mut self) { |
| 1090 | let reports_client = self.client.clone(); |
| 1091 | let reports = reports_client |
| 1092 | .event_cache() |
| 1093 | .subscribe_to_decryption_reports(); |
| 1094 | futures_util::pin_mut!(reports); |
| 1095 | let mut ignores = self.client.subscribe_to_ignore_user_list_changes(); |
| 1096 | let mut work: FuturesUnordered<EngineBoxFuture<'static, Work>> = FuturesUnordered::new(); |
| 1097 | let mut captures = BTreeSet::new(); |
| 1098 | let mut retries = BTreeSet::new(); |
| 1099 | let mut history = false; |
| 1100 | let mut next_scan = now() + 60_000; |
| 1101 | let mut next_expiry = 0; |
| 1102 | let mut tick = Box::pin(matrix_sdk::sleep::sleep(Duration::from_secs(1))); |
| 1103 | loop { |
| 1104 | self.schedule(&mut work, &mut captures, &mut retries, &mut history); |
| 1105 | tokio::select! { |
| 1106 | biased; |
| 1107 | request = self.requests.recv() => match request { |
| 1108 | Some(Request::Stop(reply)) => { |
| 1109 | if self.dirty && let Err(error) = self.flush().await { |
| 1110 | tracing::error!(%error, "saving the mentions inbox at shutdown failed"); |
| 1111 | } |
| 1112 | let _ = reply.send(()); |
| 1113 | return; |
| 1114 | } |
| 1115 | Some(Request::Batch(batch, reply)) => { self.batch(batch).await; let _ = reply.send(()); } |
| 1116 | Some(Request::Command(command, reply)) => { let result = self.command(command).await; let _ = reply.send(result); } |
| 1117 | Some(Request::GetRepairPolicy(reply)) => { let _ = reply.send(Ok(self.data.repair_policy.clone())); } |
| 1118 | Some(Request::SetRepairPolicy(policy, reply)) => { let result = self.set_repair_policy(policy).await; let _ = reply.send(result); } |
| 1119 | Some(Request::GetRepairCoverage(room_id, reply)) => { let coverage = self.sync.repair_coverage.get(&room_id).cloned().unwrap_or_default(); let _ = reply.send(Ok(coverage)); } |
| 1120 | Some(Request::RepairResolved(room_id, reply)) => { let result = self.repair_resolved(room_id).await; let _ = reply.send(result); } |
| 1121 | None => return, |
| 1122 | }, |
| 1123 | Some(result) = work.next(), if !work.is_empty() => { |
| 1124 | let mut next = std::mem::take(&mut self.data); |
| 1125 | // a candidate that failed again only moved its retry time, which needs no write |
| 1126 | let changed = self.complete(&mut next, result, &mut captures, &mut retries, &mut history).await; |
| 1127 | self.data = next; |
| 1128 | self.dirty |= changed; |
| 1129 | } |
| 1130 | Some(report) = reports.next() => { |
| 1131 | let room = match report { Ok(RedecryptorReport::ResolvedUtds { room_id, .. }) => Some(room_id), _ => None }; |
| 1132 | for candidate in self.data.candidates.values_mut().filter(|candidate| candidate.encrypted() && room.as_ref().is_none_or(|room| *room == candidate.room_id)) { candidate.retry_at_ms = 0; } |
| 1133 | } |
| 1134 | Some(_) = ignores.next() => { |
| 1135 | self.ignored = self.ignored_users().await; |
| 1136 | let mut next = std::mem::take(&mut self.data); |
| 1137 | self.dirty |= self.filter_ignored(&mut next); |
| 1138 | self.data = next; |
| 1139 | } |
| 1140 | () = &mut tick => { |
| 1141 | tick = Box::pin(matrix_sdk::sleep::sleep(Duration::from_secs(1))); |
| 1142 | if now() >= next_scan && !history { self.recovery_budget = 20; self.latest_scan = true; next_scan = now() + 60_000; } |
| 1143 | if now() >= next_expiry { self.dirty |= self.data.expire_candidates(now()); next_expiry = now() + 60_000; } |
| 1144 | if self.dirty && now() >= self.flush_after && let Err(error) = self.flush().await { self.store_failed(error).await; } |
| 1145 | } |
| 1146 | } |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | async fn complete( |
| 1151 | &mut self, |
| 1152 | next: &mut Data, |
| 1153 | result: Work, |
| 1154 | captures: &mut BTreeSet<String>, |
| 1155 | retries: &mut BTreeSet<String>, |
| 1156 | history: &mut bool, |
| 1157 | ) -> bool { |
| 1158 | match result { |
| 1159 | Work::Capture(key, revision, result) => { |
| 1160 | captures.remove(&key); |
| 1161 | let observed = result |
| 1162 | .as_ref() |
| 1163 | .ok() |
| 1164 | .map(|(_, _, observed)| observed.clone()) |
| 1165 | .unwrap_or_default(); |
| 1166 | let room_id = next |
| 1167 | .entries |
| 1168 | .get(&key) |
| 1169 | .filter(|entry| entry.revision == revision) |
| 1170 | .map(|entry| entry.key.room_id.clone()) |
| 1171 | .filter(|room_id| { |
| 1172 | self.client |
| 1173 | .get_room(room_id) |
| 1174 | .is_some_and(|room| room.state() == RoomState::Joined) |
| 1175 | }); |
| 1176 | self.captured(next, key, revision, result); |
| 1177 | if let Some(room_id) = room_id { |
| 1178 | for value in observed { |
| 1179 | let identity = value["event_id"] |
| 1180 | .as_str() |
| 1181 | .map(|event_id| format!("{room_id}\n{event_id}")); |
| 1182 | if identity.as_ref().is_some_and(|key| { |
| 1183 | next.events |
| 1184 | .get(key) |
| 1185 | .is_some_and(|event| event.raw.is_some()) |
| 1186 | }) { |
| 1187 | continue; |
| 1188 | } |
| 1189 | self.observe(next, &room_id, value).await; |
| 1190 | } |
| 1191 | } |
| 1192 | } |
| 1193 | Work::Candidate(key, result) => { |
| 1194 | retries.remove(&key); |
| 1195 | if let Some(mut candidate) = next.candidates.remove(&key) { |
| 1196 | match result { |
| 1197 | Ok(value) => { |
| 1198 | self.observe(next, &candidate.room_id, value).await; |
| 1199 | if let Some(unresolved) = next.candidates.get_mut(&key) { |
| 1200 | unresolved.attempts = candidate.attempts.saturating_add(1); |
| 1201 | unresolved.first_seen_ms = candidate.first_seen_ms; |
| 1202 | unresolved.retry_at_ms = |
| 1203 | now() + (1000u64 << unresolved.attempts.min(8)); |
| 1204 | } |
| 1205 | } |
| 1206 | Err(error) => { |
| 1207 | if !candidate.encrypted() |
| 1208 | && (matches!( |
| 1209 | error.kind, |
| 1210 | ErrorKind::EventNotFound | ErrorKind::Forbidden |
| 1211 | ) || error |
| 1212 | .server |
| 1213 | .as_ref() |
| 1214 | .is_some_and(|server| matches!(server.status, 403 | 404))) |
| 1215 | { |
| 1216 | next.gap( |
| 1217 | Some(candidate.room_id), |
| 1218 | MentionGapReason::ContextUnavailable, |
| 1219 | None, |
| 1220 | ); |
| 1221 | } else { |
| 1222 | candidate.attempts = candidate.attempts.saturating_add(1); |
| 1223 | candidate.retry_at_ms = |
| 1224 | retry_at(&error, 1000u64 << candidate.attempts.min(8)); |
| 1225 | next.candidates.insert(key, candidate); |
| 1226 | return false; |
| 1227 | } |
| 1228 | } |
| 1229 | } |
| 1230 | } |
| 1231 | } |
| 1232 | Work::History(latest, from, result) => { |
| 1233 | *history = false; |
| 1234 | self.recovery_budget = self.recovery_budget.saturating_sub(1); |
| 1235 | match result { |
| 1236 | Ok(page) => { |
| 1237 | next.coverage.historical_supported = Some(true); |
| 1238 | let mut reached_anchor = false; |
| 1239 | for notification in page.notifications { |
| 1240 | if let Some(event_id) = notification |
| 1241 | .event |
| 1242 | .get_field::<String>("event_id") |
| 1243 | .ok() |
| 1244 | .flatten() |
| 1245 | { |
| 1246 | let identity = format!("{}\n{}", notification.room_id, event_id); |
| 1247 | if latest && from.is_none() && next.latest_head.is_none() { |
| 1248 | next.latest_head = Some(identity.clone()); |
| 1249 | } |
| 1250 | if latest && next.latest_anchor.as_ref() == Some(&identity) { |
| 1251 | reached_anchor = true; |
| 1252 | break; |
| 1253 | } |
| 1254 | } |
| 1255 | if self |
| 1256 | .client |
| 1257 | .get_room(¬ification.room_id) |
| 1258 | .is_some_and(|room| room.state() == RoomState::Joined) |
| 1259 | && let Ok(value) = |
| 1260 | serde_json::from_str(notification.event.json().get()) |
| 1261 | { |
| 1262 | self.observe(next, ¬ification.room_id, value).await; |
| 1263 | } |
| 1264 | } |
| 1265 | let token = page |
| 1266 | .next_token |
| 1267 | .filter(|token| Some(token) != from.as_ref() && !reached_anchor); |
| 1268 | if latest { |
| 1269 | next.latest_cursor = token.clone(); |
| 1270 | if token.is_none() { |
| 1271 | self.latest_scan = false; |
| 1272 | next.latest_anchor = |
| 1273 | next.latest_head.take().or(next.latest_anchor.take()); |
| 1274 | } |
| 1275 | } else { |
| 1276 | next.history_cursor = token.clone(); |
| 1277 | next.history_exhausted = token.is_none(); |
| 1278 | } |
| 1279 | } |
| 1280 | Err(error) => { |
| 1281 | if error |
| 1282 | .server |
| 1283 | .as_ref() |
| 1284 | .is_some_and(|server| matches!(server.status, 404 | 405 | 501)) |
| 1285 | { |
| 1286 | next.coverage.historical_supported = Some(false); |
| 1287 | self.recovery_budget = 0; |
| 1288 | } |
| 1289 | if error |
| 1290 | .server |
| 1291 | .as_ref() |
| 1292 | .is_some_and(|server| server.status == 400) |
| 1293 | { |
| 1294 | if latest { |
| 1295 | next.latest_cursor = None; |
| 1296 | next.latest_head = None; |
| 1297 | } else { |
| 1298 | next.history_cursor = None; |
| 1299 | } |
| 1300 | } |
| 1301 | next.gap(None, MentionGapReason::NotificationHistoryUnavailable, from); |
| 1302 | self.recovery_retry = retry_at(&error, 60_000); |
| 1303 | } |
| 1304 | } |
| 1305 | next.coverage.recovering = self.recovery_budget > 0 |
| 1306 | && (self.latest_scan || !next.history_exhausted) |
| 1307 | && next.coverage.historical_supported != Some(false); |
| 1308 | } |
| 1309 | } |
| 1310 | true |
| 1311 | } |
| 1312 | |
| 1313 | fn schedule( |
| 1314 | &mut self, |
| 1315 | work: &mut FuturesUnordered<EngineBoxFuture<'static, Work>>, |
| 1316 | captures: &mut BTreeSet<String>, |
| 1317 | retries: &mut BTreeSet<String>, |
| 1318 | history: &mut bool, |
| 1319 | ) { |
| 1320 | for (key, entry) in self.data.entries.iter().filter(|(_, entry)| matches!(entry.capture, MentionCaptureState::Pending) || matches!(entry.capture, MentionCaptureState::Failed {retry_at_ms, ..} if retry_at_ms <= now())).take(128) { |
| 1321 | if captures.len() >= 2 { break; } |
| 1322 | if captures.contains(key) { continue; } |
| 1323 | let Some(room) = self.client.get_room(&entry.key.room_id).filter(|room| room.state() == RoomState::Joined) else { continue; }; |
| 1324 | captures.insert(key.clone()); |
| 1325 | let key = key.clone(); let event_id = entry.key.event_id.clone(); let account = self.account.clone(); let revision = entry.revision; |
| 1326 | work.push(Box::pin(async move { Work::Capture(key, revision, context::capture(room, Some(account), event_id, 10, 10).await) })); |
| 1327 | } |
| 1328 | for (key, candidate) in &self.data.candidates { |
| 1329 | if retries.len() >= 2 { |
| 1330 | break; |
| 1331 | } |
| 1332 | if candidate.retry_at_ms > now() || retries.contains(key) { |
| 1333 | continue; |
| 1334 | } |
| 1335 | let Some(room) = self |
| 1336 | .client |
| 1337 | .get_room(&candidate.room_id) |
| 1338 | .filter(|room| room.state() == RoomState::Joined) |
| 1339 | else { |
| 1340 | continue; |
| 1341 | }; |
| 1342 | let key = key.clone(); |
| 1343 | let candidate = candidate.clone(); |
| 1344 | let key_for_work = key.clone(); |
| 1345 | retries.insert(key); |
| 1346 | work.push(Box::pin(async move { |
| 1347 | let result = async { |
| 1348 | if candidate.raw["type"] == "m.room.encrypted" { |
| 1349 | let raw: Raw<OriginalSyncRoomEncryptedEvent> = |
| 1350 | Raw::from_json_string(candidate.raw.to_string()).map_err(|error| { |
| 1351 | Error::with_source( |
| 1352 | ErrorKind::Invalid, |
| 1353 | "invalid encrypted mention candidate", |
| 1354 | error, |
| 1355 | ) |
| 1356 | })?; |
| 1357 | let event = room.decrypt_event(&raw, None).await.map_err(|error| { |
| 1358 | Error::from_sdk("decrypting a mention candidate failed", error) |
| 1359 | })?; |
| 1360 | let value: Value = |
| 1361 | serde_json::from_str(event.raw().json().get()).map_err(|error| { |
| 1362 | Error::with_source( |
| 1363 | ErrorKind::Invalid, |
| 1364 | "invalid decrypted mention", |
| 1365 | error, |
| 1366 | ) |
| 1367 | })?; |
| 1368 | if value["type"] == "m.room.encrypted" { |
| 1369 | return Err(Error::new( |
| 1370 | ErrorKind::Encryption, |
| 1371 | "mention candidate still awaits keys", |
| 1372 | )); |
| 1373 | } |
| 1374 | return Ok(value); |
| 1375 | } |
| 1376 | let target = candidate.raw["content"]["m.relates_to"]["event_id"] |
| 1377 | .as_str() |
| 1378 | .filter(|_| { |
| 1379 | candidate.raw["content"]["m.relates_to"]["rel_type"] == "m.replace" |
| 1380 | }); |
| 1381 | if let Some(target) = |
| 1382 | target.and_then(|target| target.parse::<ruma::OwnedEventId>().ok()) |
| 1383 | { |
| 1384 | let event = room.event(&target, None).await.map_err(|error| { |
| 1385 | Error::from_sdk("fetching an edited mention failed", error) |
| 1386 | })?; |
| 1387 | let original: Value = serde_json::from_str(event.raw().json().get()) |
| 1388 | .map_err(|error| { |
| 1389 | Error::with_source( |
| 1390 | ErrorKind::Invalid, |
| 1391 | "invalid edited mention", |
| 1392 | error, |
| 1393 | ) |
| 1394 | })?; |
| 1395 | if original["sender"] == candidate.raw["sender"] { |
| 1396 | let mut original = edited(original, &candidate.raw); |
| 1397 | original["unsigned"]["macltok_edit"] = candidate.raw; |
| 1398 | return Ok(original); |
| 1399 | } |
| 1400 | return Err(Error::new( |
| 1401 | ErrorKind::Forbidden, |
| 1402 | "an edit belongs to a different sender", |
| 1403 | )); |
| 1404 | } |
| 1405 | let mut value = candidate.raw; |
| 1406 | if let Some(target) = |
| 1407 | value["content"]["m.relates_to"]["m.in_reply_to"]["event_id"] |
| 1408 | .as_str() |
| 1409 | .and_then(|target| target.parse::<ruma::OwnedEventId>().ok()) |
| 1410 | { |
| 1411 | let event = room.event(&target, None).await.map_err(|error| { |
| 1412 | Error::from_sdk("fetching a mention reply target failed", error) |
| 1413 | })?; |
| 1414 | let target: Value = serde_json::from_str(event.raw().json().get()) |
| 1415 | .map_err(|error| { |
| 1416 | Error::with_source( |
| 1417 | ErrorKind::Invalid, |
| 1418 | "invalid mention reply target", |
| 1419 | error, |
| 1420 | ) |
| 1421 | })?; |
| 1422 | value["unsigned"]["macltok_reply_sender"] = target["sender"].clone(); |
| 1423 | } |
| 1424 | Ok(value) |
| 1425 | } |
| 1426 | .await; |
| 1427 | Work::Candidate(key_for_work, result) |
| 1428 | })); |
| 1429 | } |
| 1430 | if !*history |
| 1431 | && self.recovery_budget > 0 |
| 1432 | && now() >= self.recovery_retry |
| 1433 | && (self.latest_scan || !self.data.history_exhausted) |
| 1434 | && self.data.coverage.historical_supported != Some(false) |
| 1435 | { |
| 1436 | *history = true; |
| 1437 | let latest = self.latest_scan; |
| 1438 | let from = if latest { |
| 1439 | self.data.latest_cursor.clone() |
| 1440 | } else { |
| 1441 | self.data.history_cursor.clone() |
| 1442 | }; |
| 1443 | let client = self.client.clone(); |
| 1444 | work.push(Box::pin(async move { |
| 1445 | let mut request = ruma::api::client::push::get_notifications::v3::Request::new(); |
| 1446 | request.from = from.clone(); |
| 1447 | request.limit = Some(ruma::uint!(50)); |
| 1448 | let result = client.send(request).await.map_err(|error| { |
| 1449 | Error::from_sdk("fetching mention history failed", error.into()) |
| 1450 | }); |
| 1451 | Work::History(latest, from, result) |
| 1452 | })); |
| 1453 | } |
| 1454 | } |
| 1455 | |
| 1456 | fn captured( |
| 1457 | &self, |
| 1458 | data: &mut Data, |
| 1459 | key: String, |
| 1460 | revision: u64, |
| 1461 | result: Result<(crate::EventContext, Vec<MediaRegistration>, Vec<Value>), Error>, |
| 1462 | ) { |
| 1463 | let Some(entry) = data.entries.get(&key) else { |
| 1464 | return; |
| 1465 | }; |
| 1466 | if entry.revision != revision { |
| 1467 | return; |
| 1468 | } |
| 1469 | let room_id = entry.key.room_id.clone(); |
| 1470 | if !self |
| 1471 | .client |
| 1472 | .get_room(&room_id) |
| 1473 | .is_some_and(|room| room.state() == RoomState::Joined) |
| 1474 | { |
| 1475 | return; |
| 1476 | } |
| 1477 | match result { |
| 1478 | Ok((context, media, _)) => { |
| 1479 | data.capture_attempts.remove(&key); |
| 1480 | let live_after = data |
| 1481 | .windows |
| 1482 | .get(&key) |
| 1483 | .map(|window| window.after.clone()) |
| 1484 | .unwrap_or_default(); |
| 1485 | let mut insert = |item: TimelineItem| -> Option<String> { |
| 1486 | let TimelineItem::Event(event) = &item else { |
| 1487 | return None; |
| 1488 | }; |
| 1489 | let event_id = event.event_id.clone()?; |
| 1490 | let event_key = id(&MentionKey { |
| 1491 | room_id: room_id.clone(), |
| 1492 | event_id, |
| 1493 | }); |
| 1494 | let registrations = media_for_item(&item, &media); |
| 1495 | let mut saved = SavedEvent { |
| 1496 | item, |
| 1497 | media: registrations, |
| 1498 | raw: None, |
| 1499 | }; |
| 1500 | if let Some(existing) = data.events.get(&event_key) { |
| 1501 | saved = existing.clone(); |
| 1502 | } |
| 1503 | if data.redacted.contains_key(&event_key) { |
| 1504 | redact(&mut saved); |
| 1505 | } |
| 1506 | data.events.insert(event_key.clone(), saved); |
| 1507 | Some(event_key) |
| 1508 | }; |
| 1509 | let before: Vec<_> = context |
| 1510 | .events_before |
| 1511 | .into_iter() |
| 1512 | .filter_map(&mut insert) |
| 1513 | .collect(); |
| 1514 | let target = context.event.and_then(&mut insert); |
| 1515 | let mut after: Vec<_> = context |
| 1516 | .events_after |
| 1517 | .into_iter() |
| 1518 | .filter_map(&mut insert) |
| 1519 | .collect(); |
| 1520 | let extended = live_after.iter().any(|key| !after.contains(key)); |
| 1521 | after.extend(live_after); |
| 1522 | after.sort_by_key(|key| { |
| 1523 | ( |
| 1524 | data.events |
| 1525 | .get(key) |
| 1526 | .and_then(|saved| match &saved.item { |
| 1527 | TimelineItem::Event(event) => Some(event.timestamp_ms), |
| 1528 | _ => None, |
| 1529 | }) |
| 1530 | .unwrap_or(0), |
| 1531 | key.clone(), |
| 1532 | ) |
| 1533 | }); |
| 1534 | after.dedup(); |
| 1535 | after.truncate(10); |
| 1536 | let entry = data.entries.get_mut(&key).unwrap(); |
| 1537 | entry.capture = if target.is_none() { |
| 1538 | MentionCaptureState::Unavailable |
| 1539 | } else if after.len() < 10 || (before.len() < 10 && context.start_token.is_some()) { |
| 1540 | MentionCaptureState::Partial |
| 1541 | } else { |
| 1542 | MentionCaptureState::Ready |
| 1543 | }; |
| 1544 | entry.revision = data.revision + 1; |
| 1545 | data.windows.insert( |
| 1546 | key, |
| 1547 | Window { |
| 1548 | before, |
| 1549 | target, |
| 1550 | after, |
| 1551 | start: context.start_token, |
| 1552 | end: if extended { None } else { context.end_token }, |
| 1553 | }, |
| 1554 | ); |
| 1555 | } |
| 1556 | Err(error) => { |
| 1557 | let attempts = data.capture_attempts.entry(key.clone()).or_default(); |
| 1558 | *attempts = attempts.saturating_add(1); |
| 1559 | let delay = (1000u64 << (*attempts).min(11)).min(3_600_000); |
| 1560 | let entry = data.entries.get_mut(&key).unwrap(); |
| 1561 | entry.capture = if matches!( |
| 1562 | error.kind, |
| 1563 | ErrorKind::EventNotFound | ErrorKind::Forbidden | ErrorKind::RoomUnknown |
| 1564 | ) || error |
| 1565 | .server |
| 1566 | .as_ref() |
| 1567 | .is_some_and(|server| matches!(server.status, 403 | 404)) |
| 1568 | { |
| 1569 | MentionCaptureState::Unavailable |
| 1570 | } else { |
| 1571 | MentionCaptureState::Failed { |
| 1572 | message: error.to_string(), |
| 1573 | retry_at_ms: retry_at(&error, delay), |
| 1574 | } |
| 1575 | }; |
| 1576 | entry.revision = data.revision + 1; |
| 1577 | } |
| 1578 | } |
| 1579 | } |
| 1580 | } |
| 1581 | |
| 1582 | fn edited(mut original: Value, edit: &Value) -> Value { |
| 1583 | original["content"] = edit["content"]["m.new_content"].clone(); |
| 1584 | original["unsigned"]["macltok_edited"] = Value::Bool(true); |
| 1585 | original |
| 1586 | } |
| 1587 | |
| 1588 | fn retry_at(error: &Error, fallback_ms: u64) -> u64 { |
| 1589 | let mut source = std::error::Error::source(error); |
| 1590 | while let Some(current) = source { |
| 1591 | if let Some(sdk) = current.downcast_ref::<matrix_sdk::Error>() { |
| 1592 | if let Some(ruma::api::error::ErrorKind::LimitExceeded(data)) = |
| 1593 | sdk.client_api_error_kind() |
| 1594 | { |
| 1595 | if let Some(delay) = data.retry_after { |
| 1596 | let delay = match delay { |
| 1597 | ruma::api::error::RetryAfter::Delay(delay) => delay, |
| 1598 | ruma::api::error::RetryAfter::DateTime(time) => time |
| 1599 | .duration_since(ruma::time::SystemTime::now()) |
| 1600 | .unwrap_or_default(), |
| 1601 | }; |
| 1602 | return now().saturating_add( |
| 1603 | u64::try_from(delay.as_millis()) |
| 1604 | .unwrap_or(u64::MAX) |
| 1605 | .max(fallback_ms), |
| 1606 | ); |
| 1607 | } |
| 1608 | } |
| 1609 | } |
| 1610 | source = current.source(); |
| 1611 | } |
| 1612 | now().saturating_add(fallback_ms) |
| 1613 | } |
| 1614 | |
| 1615 | fn redact(event: &mut SavedEvent) { |
| 1616 | if let TimelineItem::Event(item) = &mut event.item { |
| 1617 | item.content = TimelineContent::Redacted; |
| 1618 | item.reply_to = None; |
| 1619 | item.reactions.clear(); |
| 1620 | } |
| 1621 | event.media.clear(); |
| 1622 | event.raw = None; |
| 1623 | } |
| 1624 | |
| 1625 | fn media_for_item( |
| 1626 | item: &TimelineItem, |
| 1627 | registrations: &[MediaRegistration], |
| 1628 | ) -> Vec<MediaRegistration> { |
| 1629 | let TimelineItem::Event(event) = item else { |
| 1630 | return Vec::new(); |
| 1631 | }; |
| 1632 | let mut ids = Vec::new(); |
| 1633 | match &event.content { |
| 1634 | TimelineContent::Message(message) => { |
| 1635 | ids.extend(message.media.iter().map(|media| &media.id)); |
| 1636 | ids.extend( |
| 1637 | message |
| 1638 | .link_previews |
| 1639 | .iter() |
| 1640 | .filter_map(|preview| preview.image.as_ref().map(|image| &image.media_id)), |
| 1641 | ); |
| 1642 | } |
| 1643 | TimelineContent::Sticker { media, .. } => ids.push(&media.id), |
| 1644 | _ => {} |
| 1645 | } |
| 1646 | registrations |
| 1647 | .iter() |
| 1648 | .filter(|registration| ids.contains(&®istration.id)) |
| 1649 | .cloned() |
| 1650 | .collect() |
| 1651 | } |
| 1652 | |
| 1653 | pub(crate) async fn watch_updates(mut updates: watch::Receiver<MentionsPage>, events: EventSender) { |
| 1654 | let mut previous: BTreeMap<String, MentionEntry> = BTreeMap::new(); |
| 1655 | loop { |
| 1656 | let snapshot = updates.borrow_and_update().clone(); |
| 1657 | let current: BTreeMap<_, _> = snapshot |
| 1658 | .entries |
| 1659 | .iter() |
| 1660 | .map(|entry| (id(&entry.key), entry.clone())) |
| 1661 | .collect(); |
| 1662 | let upserts = current |
| 1663 | .iter() |
| 1664 | .filter(|(key, entry)| previous.get(*key) != Some(entry)) |
| 1665 | .map(|(_, entry)| entry.clone()) |
| 1666 | .collect(); |
| 1667 | let removed = previous |
| 1668 | .iter() |
| 1669 | .filter(|(key, _)| !current.contains_key(*key)) |
| 1670 | .map(|(_, entry)| entry.key.clone()) |
| 1671 | .collect(); |
| 1672 | previous = current; |
| 1673 | if events |
| 1674 | .send(Event::MentionsChanged(MentionsUpdate { |
| 1675 | snapshot, |
| 1676 | upserts, |
| 1677 | removed, |
| 1678 | })) |
| 1679 | .await |
| 1680 | .is_err() |
| 1681 | { |
| 1682 | return; |
| 1683 | } |
| 1684 | if updates.changed().await.is_err() { |
| 1685 | return; |
| 1686 | } |
| 1687 | } |
| 1688 | } |