Line data Source code
1 : use std::{
2 : cell::{RefCell, RefMut, UnsafeCell},
3 : ffi::CStr,
4 : sync::Arc,
5 : };
6 :
7 : use bytes::Bytes;
8 : use desim::{
9 : executor::{self, PollSome},
10 : network::TCP,
11 : node_os::NodeOs,
12 : proto::{AnyMessage, NetEvent, NodeEvent},
13 : world::NodeId,
14 : };
15 : use tracing::debug;
16 : use utils::lsn::Lsn;
17 : use walproposer::{
18 : api_bindings::Level,
19 : bindings::{
20 : NeonWALReadResult, SafekeeperStateDesiredEvents, WL_SOCKET_READABLE, WL_SOCKET_WRITEABLE,
21 : },
22 : walproposer::{ApiImpl, Config},
23 : };
24 :
25 : use super::walproposer_disk::DiskWalProposer;
26 :
27 : /// Special state for each wp->sk connection.
28 : struct SafekeeperConn {
29 : host: String,
30 : port: String,
31 : node_id: NodeId,
32 : // socket is Some(..) equals to connection is established
33 : socket: Option<TCP>,
34 : // connection is in progress
35 : is_connecting: bool,
36 : // START_WAL_PUSH is in progress
37 : is_start_wal_push: bool,
38 : // pointer to Safekeeper in walproposer for callbacks
39 : raw_ptr: *mut walproposer::bindings::Safekeeper,
40 : }
41 :
42 : impl SafekeeperConn {
43 27453 : pub fn new(host: String, port: String) -> Self {
44 27453 : // port number is the same as NodeId
45 27453 : let port_num = port.parse::<u32>().unwrap();
46 27453 : Self {
47 27453 : host,
48 27453 : port,
49 27453 : node_id: port_num,
50 27453 : socket: None,
51 27453 : is_connecting: false,
52 27453 : is_start_wal_push: false,
53 27453 : raw_ptr: std::ptr::null_mut(),
54 27453 : }
55 27453 : }
56 : }
57 :
58 : /// Simulation version of a postgres WaitEventSet. At pos 0 there is always
59 : /// a special NodeEvents channel, which is used as a latch.
60 : struct EventSet {
61 : os: NodeOs,
62 : // all pollable channels, 0 is always NodeEvent channel
63 : chans: Vec<Box<dyn PollSome>>,
64 : // 0 is always nullptr
65 : sk_ptrs: Vec<*mut walproposer::bindings::Safekeeper>,
66 : // event mask for each channel
67 : masks: Vec<u32>,
68 : }
69 :
70 : impl EventSet {
71 9151 : pub fn new(os: NodeOs) -> Self {
72 9151 : let node_events = os.node_events();
73 9151 : Self {
74 9151 : os,
75 9151 : chans: vec![Box::new(node_events)],
76 9151 : sk_ptrs: vec![std::ptr::null_mut()],
77 9151 : masks: vec![WL_SOCKET_READABLE],
78 9151 : }
79 9151 : }
80 :
81 : /// Leaves all readable channels at the beginning of the array.
82 30547 : fn sort_readable(&mut self) -> usize {
83 30547 : let mut cnt = 1;
84 72408 : for i in 1..self.chans.len() {
85 72408 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
86 72408 : self.chans.swap(i, cnt);
87 72408 : self.sk_ptrs.swap(i, cnt);
88 72408 : self.masks.swap(i, cnt);
89 72408 : cnt += 1;
90 72408 : }
91 : }
92 30547 : cnt
93 30547 : }
94 :
95 68703 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
96 68703 : let index = self
97 68703 : .sk_ptrs
98 68703 : .iter()
99 257759 : .position(|&ptr| ptr == conn.raw_ptr)
100 68703 : .expect("safekeeper should exist in event set");
101 68703 : self.masks[index] = event_mask;
102 68703 : }
103 :
104 60974 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
105 147214 : for ptr in self.sk_ptrs.iter() {
106 147214 : assert!(*ptr != sk.raw_ptr);
107 : }
108 :
109 60974 : self.chans.push(Box::new(
110 60974 : sk.socket
111 60974 : .as_ref()
112 60974 : .expect("socket should not be closed")
113 60974 : .recv_chan(),
114 60974 : ));
115 60974 : self.sk_ptrs.push(sk.raw_ptr);
116 60974 : self.masks.push(event_mask);
117 60974 : }
118 :
119 38883 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
120 82927 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
121 38883 : if index.is_none() {
122 9 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
123 9 : return;
124 38874 : }
125 38874 : let index = index.unwrap();
126 38874 :
127 38874 : self.chans.remove(index);
128 38874 : self.sk_ptrs.remove(index);
129 38874 : self.masks.remove(index);
130 38874 :
131 38874 : // to simulate the actual behaviour
132 38874 : self.refresh_event_set();
133 38883 : }
134 :
135 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
136 46294 : fn refresh_event_set(&mut self) {
137 131523 : for (i, mask) in self.masks.iter_mut().enumerate() {
138 131523 : if i == 0 {
139 46294 : continue;
140 85229 : }
141 85229 :
142 85229 : let mut mask_sk: u32 = 0;
143 85229 : let mut mask_nwr: u32 = 0;
144 85229 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
145 85229 :
146 85229 : if mask_sk != *mask {
147 0 : debug!(
148 0 : "refresh_event_set: sk={:?}, old_mask={:#b}, new_mask={:#b}",
149 0 : self.sk_ptrs[i], *mask, mask_sk
150 : );
151 0 : *mask = mask_sk;
152 85229 : }
153 : }
154 46294 : }
155 :
156 : /// Wait for events on all channels.
157 30547 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
158 : // all channels are always writeable
159 102955 : for (i, mask) in self.masks.iter().enumerate() {
160 102955 : if *mask & WL_SOCKET_WRITEABLE != 0 {
161 0 : return walproposer::walproposer::WaitResult::Network(
162 0 : self.sk_ptrs[i],
163 0 : WL_SOCKET_WRITEABLE,
164 0 : );
165 102955 : }
166 : }
167 :
168 30547 : let cnt = self.sort_readable();
169 30547 :
170 30547 : let slice = &self.chans[0..cnt];
171 30547 : match executor::epoll_chans(slice, timeout_millis) {
172 11182 : None => walproposer::walproposer::WaitResult::Timeout,
173 : Some(0) => {
174 626 : let msg = self.os.node_events().must_recv();
175 626 : match msg {
176 626 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
177 626 : // got a notification about new WAL available
178 626 : }
179 0 : NodeEvent::Internal(_) => unreachable!(),
180 0 : NodeEvent::Accept(_) => unreachable!(),
181 : }
182 626 : walproposer::walproposer::WaitResult::Latch
183 : }
184 18739 : Some(index) => walproposer::walproposer::WaitResult::Network(
185 18739 : self.sk_ptrs[index],
186 18739 : WL_SOCKET_READABLE,
187 18739 : ),
188 : }
189 30547 : }
190 : }
191 :
192 : /// This struct handles all calls from walproposer into walproposer_api.
193 : pub struct SimulationApi {
194 : os: NodeOs,
195 : safekeepers: RefCell<Vec<SafekeeperConn>>,
196 : disk: Arc<DiskWalProposer>,
197 : redo_start_lsn: Option<Lsn>,
198 : last_logged_commit_lsn: u64,
199 : shmem: UnsafeCell<walproposer::bindings::WalproposerShmemState>,
200 : config: Config,
201 : event_set: RefCell<Option<EventSet>>,
202 : }
203 :
204 : pub struct Args {
205 : pub os: NodeOs,
206 : pub config: Config,
207 : pub disk: Arc<DiskWalProposer>,
208 : pub redo_start_lsn: Option<Lsn>,
209 : }
210 :
211 : impl SimulationApi {
212 9151 : pub fn new(args: Args) -> Self {
213 9151 : // initialize connection state for each safekeeper
214 9151 : let sk_conns = args
215 9151 : .config
216 9151 : .safekeepers_list
217 9151 : .iter()
218 27453 : .map(|s| {
219 27453 : SafekeeperConn::new(
220 27453 : s.split(':').next().unwrap().to_string(),
221 27453 : s.split(':').nth(1).unwrap().to_string(),
222 27453 : )
223 27453 : })
224 9151 : .collect::<Vec<_>>();
225 9151 :
226 9151 : Self {
227 9151 : os: args.os,
228 9151 : safekeepers: RefCell::new(sk_conns),
229 9151 : disk: args.disk,
230 9151 : redo_start_lsn: args.redo_start_lsn,
231 9151 : last_logged_commit_lsn: 0,
232 9151 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
233 9151 : config: args.config,
234 9151 : event_set: RefCell::new(None),
235 9151 : }
236 9151 : }
237 :
238 : /// Get SafekeeperConn for the given Safekeeper.
239 307623 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
240 307623 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
241 307623 : let state = self.safekeepers.borrow_mut();
242 307623 : RefMut::map(state, |v| {
243 307623 : v.iter_mut()
244 613997 : .find(|conn| conn.port == sk_port)
245 307623 : .expect("safekeeper conn not found by port")
246 307623 : })
247 307623 : }
248 : }
249 :
250 : impl ApiImpl for SimulationApi {
251 328631 : fn get_current_timestamp(&self) -> i64 {
252 328631 : debug!("get_current_timestamp");
253 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
254 : // milliseconds, so add 10^3
255 328631 : self.os.now() as i64 * 1000
256 328631 : }
257 :
258 1293 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
259 1293 : let mut shmem = unsafe { *self.get_shmem_state() };
260 1293 : shmem.propEpochStartLsn.value = donor_lsn;
261 1293 : shmem.donor_conninfo = donor.conninfo;
262 1293 : }
263 :
264 33972 : fn conn_status(
265 33972 : &self,
266 33972 : _: &mut walproposer::bindings::Safekeeper,
267 33972 : ) -> walproposer::bindings::WalProposerConnStatusType {
268 33972 : debug!("conn_status");
269 : // break the connection with a 10% chance
270 33972 : if self.os.random(100) < 10 {
271 3485 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
272 : } else {
273 30487 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
274 : }
275 33972 : }
276 :
277 33972 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
278 33972 : debug!("conn_connect_start");
279 33972 : let mut conn = self.get_conn(sk);
280 33972 :
281 33972 : assert!(conn.socket.is_none());
282 33972 : let socket = self.os.open_tcp(conn.node_id);
283 33972 : conn.socket = Some(socket);
284 33972 : conn.raw_ptr = sk;
285 33972 : conn.is_connecting = true;
286 33972 : }
287 :
288 30487 : fn conn_connect_poll(
289 30487 : &self,
290 30487 : _: &mut walproposer::bindings::Safekeeper,
291 30487 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
292 30487 : debug!("conn_connect_poll");
293 : // TODO: break the connection here
294 30487 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
295 30487 : }
296 :
297 30487 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
298 30487 : debug!("conn_send_query: {}", query);
299 30487 : self.get_conn(sk).is_start_wal_push = true;
300 30487 : true
301 30487 : }
302 :
303 30487 : fn conn_get_query_result(
304 30487 : &self,
305 30487 : _: &mut walproposer::bindings::Safekeeper,
306 30487 : ) -> walproposer::bindings::WalProposerExecStatusType {
307 30487 : debug!("conn_get_query_result");
308 : // TODO: break the connection here
309 30487 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
310 30487 : }
311 :
312 20943 : fn conn_async_read(
313 20943 : &self,
314 20943 : sk: &mut walproposer::bindings::Safekeeper,
315 20943 : vec: &mut Vec<u8>,
316 20943 : ) -> walproposer::bindings::PGAsyncReadResult {
317 20943 : debug!("conn_async_read");
318 20943 : let mut conn = self.get_conn(sk);
319 :
320 20943 : let socket = if let Some(socket) = conn.socket.as_mut() {
321 20943 : socket
322 : } else {
323 : // socket is already closed
324 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
325 : };
326 :
327 20943 : let msg = socket.recv_chan().try_recv();
328 :
329 18528 : match msg {
330 : None => {
331 : // no message is ready
332 2415 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
333 : }
334 : Some(NetEvent::Closed) => {
335 : // connection is closed
336 8040 : debug!("conn_async_read: connection is closed");
337 8040 : conn.socket = None;
338 8040 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
339 : }
340 10488 : Some(NetEvent::Message(msg)) => {
341 : // got a message
342 10488 : let b = match msg {
343 10488 : desim::proto::AnyMessage::Bytes(b) => b,
344 0 : _ => unreachable!(),
345 : };
346 10488 : vec.extend_from_slice(&b);
347 10488 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
348 : }
349 : }
350 20943 : }
351 :
352 34993 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
353 34993 : let mut conn = self.get_conn(sk);
354 34993 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
355 34993 : let socket = conn.socket.as_mut().unwrap();
356 34993 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
357 34993 : true
358 34993 : }
359 :
360 6367 : fn conn_async_write(
361 6367 : &self,
362 6367 : sk: &mut walproposer::bindings::Safekeeper,
363 6367 : buf: &[u8],
364 6367 : ) -> walproposer::bindings::PGAsyncWriteResult {
365 6367 : let mut conn = self.get_conn(sk);
366 6367 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
367 6367 : if let Some(socket) = conn.socket.as_mut() {
368 6367 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
369 6367 : } else {
370 : // connection is already closed
371 0 : debug!("conn_async_write: writing to a closed socket!");
372 : // TODO: maybe we should return error here?
373 : }
374 6367 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
375 6367 : }
376 :
377 1362 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
378 1362 : debug!("wal_reader_allocate");
379 1362 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
380 1362 : }
381 :
382 1030 : fn wal_read(
383 1030 : &self,
384 1030 : _sk: &mut walproposer::bindings::Safekeeper,
385 1030 : buf: &mut [u8],
386 1030 : startpos: u64,
387 1030 : ) -> NeonWALReadResult {
388 1030 : self.disk.lock().read(startpos, buf);
389 1030 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
390 1030 : }
391 :
392 9151 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
393 9151 : debug!("init_event_set");
394 9151 : let new_event_set = EventSet::new(self.os.clone());
395 9151 : let old_event_set = self.event_set.replace(Some(new_event_set));
396 9151 : assert!(old_event_set.is_none());
397 9151 : }
398 :
399 68703 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
400 68703 : debug!(
401 0 : "update_event_set, sk={:?}, events_mask={:#b}",
402 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
403 : );
404 68703 : let conn = self.get_conn(sk);
405 68703 :
406 68703 : self.event_set
407 68703 : .borrow_mut()
408 68703 : .as_mut()
409 68703 : .unwrap()
410 68703 : .update_event_set(&conn, event_mask);
411 68703 : }
412 :
413 60974 : fn add_safekeeper_event_set(
414 60974 : &self,
415 60974 : sk: &mut walproposer::bindings::Safekeeper,
416 60974 : event_mask: u32,
417 60974 : ) {
418 60974 : debug!(
419 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
420 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
421 : );
422 :
423 60974 : self.event_set
424 60974 : .borrow_mut()
425 60974 : .as_mut()
426 60974 : .unwrap()
427 60974 : .add_safekeeper(&self.get_conn(sk), event_mask);
428 60974 : }
429 :
430 38883 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
431 38883 : debug!(
432 0 : "rm_safekeeper_event_set, sk={:?}",
433 0 : sk as *mut walproposer::bindings::Safekeeper,
434 : );
435 :
436 38883 : self.event_set
437 38883 : .borrow_mut()
438 38883 : .as_mut()
439 38883 : .unwrap()
440 38883 : .remove_safekeeper(&self.get_conn(sk));
441 38883 : }
442 :
443 7420 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
444 7420 : debug!("active_state_update_event_set");
445 :
446 7420 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
447 7420 : self.event_set
448 7420 : .borrow_mut()
449 7420 : .as_mut()
450 7420 : .unwrap()
451 7420 : .refresh_event_set();
452 7420 : }
453 :
454 20454 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
455 20454 : 0
456 20454 : }
457 :
458 91521 : fn wait_event_set(
459 91521 : &self,
460 91521 : _: &mut walproposer::bindings::WalProposer,
461 91521 : timeout_millis: i64,
462 91521 : ) -> walproposer::walproposer::WaitResult {
463 91521 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
464 91521 : let mut conns = self.safekeepers.borrow_mut();
465 213557 : for conn in conns.iter_mut() {
466 213557 : if conn.socket.is_some() && conn.is_connecting {
467 30487 : conn.is_connecting = false;
468 30487 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
469 30487 : return walproposer::walproposer::WaitResult::Network(
470 30487 : conn.raw_ptr,
471 30487 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
472 30487 : );
473 183070 : }
474 183070 : if conn.socket.is_some() && conn.is_start_wal_push {
475 30487 : conn.is_start_wal_push = false;
476 30487 : debug!(
477 0 : "wait_event_set, start wal push to {}:{}",
478 : conn.host, conn.port
479 : );
480 30487 : return walproposer::walproposer::WaitResult::Network(
481 30487 : conn.raw_ptr,
482 30487 : WL_SOCKET_READABLE,
483 30487 : );
484 152583 : }
485 : }
486 30547 : drop(conns);
487 30547 :
488 30547 : let res = self
489 30547 : .event_set
490 30547 : .borrow_mut()
491 30547 : .as_mut()
492 30547 : .unwrap()
493 30547 : .wait(timeout_millis);
494 30547 :
495 30547 : debug!(
496 0 : "wait_event_set, timeout_millis={}, res={:?}",
497 : timeout_millis, res,
498 : );
499 22045 : res
500 83019 : }
501 :
502 9151 : fn strong_random(&self, buf: &mut [u8]) -> bool {
503 9151 : debug!("strong_random");
504 9151 : buf.fill(0);
505 9151 : true
506 9151 : }
507 :
508 459 : fn finish_sync_safekeepers(&self, lsn: u64) {
509 459 : debug!("finish_sync_safekeepers, lsn={}", lsn);
510 459 : executor::exit(0, Lsn(lsn).to_string());
511 459 : }
512 :
513 97496 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
514 97496 : debug!("wp_log[{}] {}", level, msg);
515 97496 : if level == Level::Fatal || level == Level::Panic {
516 102 : if msg.contains("rejects our connection request with term") {
517 50 : // collected quorum with lower term, then got rejected by next connected safekeeper
518 50 : executor::exit(1, msg.to_owned());
519 52 : }
520 102 : if msg.contains("collected propEpochStartLsn") && msg.contains(", but basebackup LSN ")
521 0 : {
522 0 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
523 0 : executor::exit(1, msg.to_owned());
524 102 : }
525 102 : if msg.contains("failed to download WAL for logical replicaiton") {
526 29 : // Recovery connection broken and recovery was failed
527 29 : executor::exit(1, msg.to_owned());
528 73 : }
529 102 : if msg.contains("missing majority of votes, collected") {
530 23 : // Voting bug when safekeeper disconnects after voting
531 23 : executor::exit(1, msg.to_owned());
532 79 : }
533 102 : panic!("unknown FATAL error from walproposer: {}", msg);
534 97394 : }
535 97394 : }
536 :
537 955 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
538 955 : let prop_lsn = wp.propEpochStartLsn;
539 955 : let prop_term = wp.propTerm;
540 955 :
541 955 : let mut prev_lsn: u64 = 0;
542 955 : let mut prev_term: u64 = 0;
543 955 :
544 955 : unsafe {
545 955 : let history = wp.propTermHistory.entries;
546 955 : let len = wp.propTermHistory.n_entries as usize;
547 955 : if len > 1 {
548 684 : let entry = *history.wrapping_add(len - 2);
549 684 : prev_lsn = entry.lsn;
550 684 : prev_term = entry.term;
551 684 : }
552 : }
553 :
554 955 : let msg = format!(
555 955 : "prop_elected;{};{};{};{}",
556 955 : prop_lsn, prop_term, prev_lsn, prev_term
557 955 : );
558 955 :
559 955 : debug!(msg);
560 955 : self.os.log_event(msg);
561 955 : }
562 :
563 348 : fn get_redo_start_lsn(&self) -> u64 {
564 348 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
565 348 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
566 348 : }
567 :
568 3203 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
569 3203 : self.shmem.get()
570 3203 : }
571 :
572 207 : fn start_streaming(
573 207 : &self,
574 207 : startpos: u64,
575 207 : callback: &walproposer::walproposer::StreamingCallback,
576 207 : ) {
577 207 : let disk = &self.disk;
578 207 : let disk_lsn = disk.lock().flush_rec_ptr().0;
579 207 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
580 207 : if startpos < disk_lsn {
581 67 : debug!("startpos < disk_lsn, it means we wrote some transaction even before streaming started");
582 140 : }
583 207 : assert!(startpos <= disk_lsn);
584 207 : let mut broadcasted = Lsn(startpos);
585 :
586 : loop {
587 790 : let available = disk.lock().flush_rec_ptr();
588 790 : assert!(available >= broadcasted);
589 583 : callback.broadcast(broadcasted, available);
590 583 : broadcasted = available;
591 583 : callback.poll();
592 : }
593 : }
594 :
595 2660 : fn process_safekeeper_feedback(
596 2660 : &mut self,
597 2660 : wp: &mut walproposer::bindings::WalProposer,
598 2660 : _sk: &mut walproposer::bindings::Safekeeper,
599 2660 : ) {
600 2660 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
601 2660 : if wp.commitLsn > self.last_logged_commit_lsn {
602 622 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
603 622 : self.last_logged_commit_lsn = wp.commitLsn;
604 2038 : }
605 2660 : }
606 :
607 132 : fn get_flush_rec_ptr(&self) -> u64 {
608 132 : let lsn = self.disk.lock().flush_rec_ptr();
609 132 : debug!("get_flush_rec_ptr: {}", lsn);
610 132 : lsn.0
611 132 : }
612 :
613 955 : fn recovery_download(
614 955 : &self,
615 955 : wp: &mut walproposer::bindings::WalProposer,
616 955 : sk: &mut walproposer::bindings::Safekeeper,
617 955 : ) -> bool {
618 955 : let mut startpos = wp.truncateLsn;
619 955 : let endpos = wp.propEpochStartLsn;
620 955 :
621 955 : if startpos == endpos {
622 535 : debug!("recovery_download: nothing to download");
623 535 : return true;
624 420 : }
625 420 :
626 420 : debug!("recovery_download from {} to {}", startpos, endpos,);
627 :
628 420 : let replication_prompt = format!(
629 420 : "START_REPLICATION {} {} {} {}",
630 420 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
631 420 : );
632 420 : let async_conn = self.get_conn(sk);
633 420 :
634 420 : let conn = self.os.open_tcp(async_conn.node_id);
635 420 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
636 420 :
637 420 : let chan = conn.recv_chan();
638 723 : while startpos < endpos {
639 420 : let event = chan.recv();
640 391 : match event {
641 : NetEvent::Closed => {
642 29 : debug!("connection closed in recovery");
643 29 : break;
644 : }
645 391 : NetEvent::Message(AnyMessage::Bytes(b)) => {
646 391 : debug!("got recovery bytes from safekeeper");
647 303 : self.disk.lock().write(startpos, &b);
648 303 : startpos += b.len() as u64;
649 : }
650 0 : NetEvent::Message(_) => unreachable!(),
651 : }
652 : }
653 :
654 332 : debug!("recovery finished at {}", startpos);
655 :
656 332 : startpos == endpos
657 867 : }
658 :
659 11881 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
660 11881 : let mut conn = self.get_conn(sk);
661 11881 : debug!("conn_finish to {}", conn.node_id);
662 11881 : if let Some(socket) = conn.socket.as_mut() {
663 3832 : socket.close();
664 8049 : } else {
665 8049 : // connection is already closed
666 8049 : }
667 11881 : conn.socket = None;
668 11881 : }
669 :
670 11525 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
671 11525 : "connection is closed, probably".into()
672 11525 : }
673 : }
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