Line data Source code
1 : use std::cell::{RefCell, RefMut, UnsafeCell};
2 : use std::ffi::CStr;
3 : use std::sync::Arc;
4 :
5 : use bytes::Bytes;
6 : use desim::executor::{self, PollSome};
7 : use desim::network::TCP;
8 : use desim::node_os::NodeOs;
9 : use desim::proto::{AnyMessage, NetEvent, NodeEvent};
10 : use desim::world::NodeId;
11 : use tracing::debug;
12 : use utils::lsn::Lsn;
13 : use walproposer::api_bindings::Level;
14 : use walproposer::bindings::{
15 : NeonWALReadResult, SafekeeperStateDesiredEvents, WL_SOCKET_READABLE, WL_SOCKET_WRITEABLE,
16 : };
17 : use walproposer::walproposer::{ApiImpl, Config};
18 :
19 : use super::walproposer_disk::DiskWalProposer;
20 :
21 : /// Special state for each wp->sk connection.
22 : struct SafekeeperConn {
23 : host: String,
24 : port: String,
25 : node_id: NodeId,
26 : // socket is Some(..) equals to connection is established
27 : socket: Option<TCP>,
28 : // connection is in progress
29 : is_connecting: bool,
30 : // START_WAL_PUSH is in progress
31 : is_start_wal_push: bool,
32 : // pointer to Safekeeper in walproposer for callbacks
33 : raw_ptr: *mut walproposer::bindings::Safekeeper,
34 : }
35 :
36 : impl SafekeeperConn {
37 27417 : pub fn new(host: String, port: String) -> Self {
38 27417 : // port number is the same as NodeId
39 27417 : let port_num = port.parse::<u32>().unwrap();
40 27417 : Self {
41 27417 : host,
42 27417 : port,
43 27417 : node_id: port_num,
44 27417 : socket: None,
45 27417 : is_connecting: false,
46 27417 : is_start_wal_push: false,
47 27417 : raw_ptr: std::ptr::null_mut(),
48 27417 : }
49 27417 : }
50 : }
51 :
52 : /// Simulation version of a postgres WaitEventSet. At pos 0 there is always
53 : /// a special NodeEvents channel, which is used as a latch.
54 : struct EventSet {
55 : os: NodeOs,
56 : // all pollable channels, 0 is always NodeEvent channel
57 : chans: Vec<Box<dyn PollSome>>,
58 : // 0 is always nullptr
59 : sk_ptrs: Vec<*mut walproposer::bindings::Safekeeper>,
60 : // event mask for each channel
61 : masks: Vec<u32>,
62 : }
63 :
64 : impl EventSet {
65 9139 : pub fn new(os: NodeOs) -> Self {
66 9139 : let node_events = os.node_events();
67 9139 : Self {
68 9139 : os,
69 9139 : chans: vec![Box::new(node_events)],
70 9139 : sk_ptrs: vec![std::ptr::null_mut()],
71 9139 : masks: vec![WL_SOCKET_READABLE],
72 9139 : }
73 9139 : }
74 :
75 : /// Leaves all readable channels at the beginning of the array.
76 27745 : fn sort_readable(&mut self) -> usize {
77 27745 : let mut cnt = 1;
78 65035 : for i in 1..self.chans.len() {
79 65035 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
80 65035 : self.chans.swap(i, cnt);
81 65035 : self.sk_ptrs.swap(i, cnt);
82 65035 : self.masks.swap(i, cnt);
83 65035 : cnt += 1;
84 65035 : }
85 : }
86 27745 : cnt
87 27745 : }
88 :
89 65726 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
90 65726 : let index = self
91 65726 : .sk_ptrs
92 65726 : .iter()
93 249319 : .position(|&ptr| ptr == conn.raw_ptr)
94 65726 : .expect("safekeeper should exist in event set");
95 65726 : self.masks[index] = event_mask;
96 65726 : }
97 :
98 60710 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
99 146952 : for ptr in self.sk_ptrs.iter() {
100 146952 : assert!(*ptr != sk.raw_ptr);
101 : }
102 :
103 60710 : self.chans.push(Box::new(
104 60710 : sk.socket
105 60710 : .as_ref()
106 60710 : .expect("socket should not be closed")
107 60710 : .recv_chan(),
108 60710 : ));
109 60710 : self.sk_ptrs.push(sk.raw_ptr);
110 60710 : self.masks.push(event_mask);
111 60710 : }
112 :
113 38340 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
114 81384 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
115 38340 : if index.is_none() {
116 7 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
117 7 : return;
118 38333 : }
119 38333 : let index = index.unwrap();
120 38333 :
121 38333 : self.chans.remove(index);
122 38333 : self.sk_ptrs.remove(index);
123 38333 : self.masks.remove(index);
124 38333 :
125 38333 : // to simulate the actual behaviour
126 38333 : self.refresh_event_set();
127 38340 : }
128 :
129 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
130 44317 : fn refresh_event_set(&mut self) {
131 125172 : for (i, mask) in self.masks.iter_mut().enumerate() {
132 125172 : if i == 0 {
133 44317 : continue;
134 80855 : }
135 80855 :
136 80855 : let mut mask_sk: u32 = 0;
137 80855 : let mut mask_nwr: u32 = 0;
138 80855 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
139 80855 :
140 80855 : if mask_sk != *mask {
141 0 : debug!(
142 0 : "refresh_event_set: sk={:?}, old_mask={:#b}, new_mask={:#b}",
143 0 : self.sk_ptrs[i], *mask, mask_sk
144 : );
145 0 : *mask = mask_sk;
146 80855 : }
147 : }
148 44317 : }
149 :
150 : /// Wait for events on all channels.
151 27745 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
152 : // all channels are always writeable
153 92780 : for (i, mask) in self.masks.iter().enumerate() {
154 92780 : if *mask & WL_SOCKET_WRITEABLE != 0 {
155 0 : return walproposer::walproposer::WaitResult::Network(
156 0 : self.sk_ptrs[i],
157 0 : WL_SOCKET_WRITEABLE,
158 0 : );
159 92780 : }
160 : }
161 :
162 27745 : let cnt = self.sort_readable();
163 27745 :
164 27745 : let slice = &self.chans[0..cnt];
165 27745 : match executor::epoll_chans(slice, timeout_millis) {
166 11434 : None => walproposer::walproposer::WaitResult::Timeout,
167 : Some(0) => {
168 517 : let msg = self.os.node_events().must_recv();
169 517 : match msg {
170 517 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
171 517 : // got a notification about new WAL available
172 517 : }
173 0 : NodeEvent::Internal(_) => unreachable!(),
174 0 : NodeEvent::Accept(_) => unreachable!(),
175 : }
176 517 : walproposer::walproposer::WaitResult::Latch
177 : }
178 15794 : Some(index) => walproposer::walproposer::WaitResult::Network(
179 15794 : self.sk_ptrs[index],
180 15794 : WL_SOCKET_READABLE,
181 15794 : ),
182 : }
183 27745 : }
184 : }
185 :
186 : /// This struct handles all calls from walproposer into walproposer_api.
187 : pub struct SimulationApi {
188 : os: NodeOs,
189 : safekeepers: RefCell<Vec<SafekeeperConn>>,
190 : disk: Arc<DiskWalProposer>,
191 : redo_start_lsn: Option<Lsn>,
192 : last_logged_commit_lsn: u64,
193 : shmem: UnsafeCell<walproposer::bindings::WalproposerShmemState>,
194 : config: Config,
195 : event_set: RefCell<Option<EventSet>>,
196 : }
197 :
198 : pub struct Args {
199 : pub os: NodeOs,
200 : pub config: Config,
201 : pub disk: Arc<DiskWalProposer>,
202 : pub redo_start_lsn: Option<Lsn>,
203 : }
204 :
205 : impl SimulationApi {
206 9139 : pub fn new(args: Args) -> Self {
207 9139 : // initialize connection state for each safekeeper
208 9139 : let sk_conns = args
209 9139 : .config
210 9139 : .safekeepers_list
211 9139 : .iter()
212 27417 : .map(|s| {
213 27417 : SafekeeperConn::new(
214 27417 : s.split(':').next().unwrap().to_string(),
215 27417 : s.split(':').nth(1).unwrap().to_string(),
216 27417 : )
217 27417 : })
218 9139 : .collect::<Vec<_>>();
219 9139 :
220 9139 : Self {
221 9139 : os: args.os,
222 9139 : safekeepers: RefCell::new(sk_conns),
223 9139 : disk: args.disk,
224 9139 : redo_start_lsn: args.redo_start_lsn,
225 9139 : last_logged_commit_lsn: 0,
226 9139 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
227 9139 : config: args.config,
228 9139 : event_set: RefCell::new(None),
229 9139 : }
230 9139 : }
231 :
232 : /// Get SafekeeperConn for the given Safekeeper.
233 296571 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
234 296571 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
235 296571 : let state = self.safekeepers.borrow_mut();
236 296571 : RefMut::map(state, |v| {
237 296571 : v.iter_mut()
238 591596 : .find(|conn| conn.port == sk_port)
239 296571 : .expect("safekeeper conn not found by port")
240 296571 : })
241 296571 : }
242 : }
243 :
244 : impl ApiImpl for SimulationApi {
245 317038 : fn get_current_timestamp(&self) -> i64 {
246 317038 : debug!("get_current_timestamp");
247 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
248 : // milliseconds, so add 10^3
249 317038 : self.os.now() as i64 * 1000
250 317038 : }
251 :
252 934 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
253 934 : let mut shmem = unsafe { *self.get_shmem_state() };
254 934 : shmem.propEpochStartLsn.value = donor_lsn;
255 934 : shmem.donor_conninfo = donor.conninfo;
256 934 : }
257 :
258 33660 : fn conn_status(
259 33660 : &self,
260 33660 : _: &mut walproposer::bindings::Safekeeper,
261 33660 : ) -> walproposer::bindings::WalProposerConnStatusType {
262 33660 : debug!("conn_status");
263 : // break the connection with a 10% chance
264 33660 : if self.os.random(100) < 10 {
265 3305 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
266 : } else {
267 30355 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
268 : }
269 33660 : }
270 :
271 33660 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
272 33660 : debug!("conn_connect_start");
273 33660 : let mut conn = self.get_conn(sk);
274 33660 :
275 33660 : assert!(conn.socket.is_none());
276 33660 : let socket = self.os.open_tcp(conn.node_id);
277 33660 : conn.socket = Some(socket);
278 33660 : conn.raw_ptr = sk;
279 33660 : conn.is_connecting = true;
280 33660 : }
281 :
282 30355 : fn conn_connect_poll(
283 30355 : &self,
284 30355 : _: &mut walproposer::bindings::Safekeeper,
285 30355 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
286 30355 : debug!("conn_connect_poll");
287 : // TODO: break the connection here
288 30355 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
289 30355 : }
290 :
291 30355 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
292 30355 : debug!("conn_send_query: {}", query);
293 30355 : self.get_conn(sk).is_start_wal_push = true;
294 30355 : true
295 30355 : }
296 :
297 30355 : fn conn_get_query_result(
298 30355 : &self,
299 30355 : _: &mut walproposer::bindings::Safekeeper,
300 30355 : ) -> walproposer::bindings::WalProposerExecStatusType {
301 30355 : debug!("conn_get_query_result");
302 : // TODO: break the connection here
303 30355 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
304 30355 : }
305 :
306 17723 : fn conn_async_read(
307 17723 : &self,
308 17723 : sk: &mut walproposer::bindings::Safekeeper,
309 17723 : vec: &mut Vec<u8>,
310 17723 : ) -> walproposer::bindings::PGAsyncReadResult {
311 17723 : debug!("conn_async_read");
312 17723 : let mut conn = self.get_conn(sk);
313 :
314 17723 : let socket = if let Some(socket) = conn.socket.as_mut() {
315 17723 : socket
316 : } else {
317 : // socket is already closed
318 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
319 : };
320 :
321 17723 : let msg = socket.recv_chan().try_recv();
322 :
323 15657 : match msg {
324 : None => {
325 : // no message is ready
326 2066 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
327 : }
328 : Some(NetEvent::Closed) => {
329 : // connection is closed
330 7737 : debug!("conn_async_read: connection is closed");
331 7737 : conn.socket = None;
332 7737 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
333 : }
334 7920 : Some(NetEvent::Message(msg)) => {
335 : // got a message
336 7920 : let b = match msg {
337 7920 : desim::proto::AnyMessage::Bytes(b) => b,
338 0 : _ => unreachable!(),
339 : };
340 7920 : vec.extend_from_slice(&b);
341 7920 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
342 : }
343 : }
344 17723 : }
345 :
346 33643 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
347 33643 : let mut conn = self.get_conn(sk);
348 33643 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
349 33643 : let socket = conn.socket.as_mut().unwrap();
350 33643 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
351 33643 : true
352 33643 : }
353 :
354 4859 : fn conn_async_write(
355 4859 : &self,
356 4859 : sk: &mut walproposer::bindings::Safekeeper,
357 4859 : buf: &[u8],
358 4859 : ) -> walproposer::bindings::PGAsyncWriteResult {
359 4859 : let mut conn = self.get_conn(sk);
360 4859 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
361 4859 : if let Some(socket) = conn.socket.as_mut() {
362 4859 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
363 4859 : } else {
364 : // connection is already closed
365 0 : debug!("conn_async_write: writing to a closed socket!");
366 : // TODO: maybe we should return error here?
367 : }
368 4859 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
369 4859 : }
370 :
371 941 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
372 941 : debug!("wal_reader_allocate");
373 941 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
374 941 : }
375 :
376 926 : fn wal_read(
377 926 : &self,
378 926 : _sk: &mut walproposer::bindings::Safekeeper,
379 926 : buf: &mut [u8],
380 926 : startpos: u64,
381 926 : ) -> NeonWALReadResult {
382 926 : self.disk.lock().read(startpos, buf);
383 926 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
384 926 : }
385 :
386 9139 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
387 9139 : debug!("init_event_set");
388 9139 : let new_event_set = EventSet::new(self.os.clone());
389 9139 : let old_event_set = self.event_set.replace(Some(new_event_set));
390 9139 : assert!(old_event_set.is_none());
391 9139 : }
392 :
393 65726 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
394 65726 : debug!(
395 0 : "update_event_set, sk={:?}, events_mask={:#b}",
396 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
397 : );
398 65726 : let conn = self.get_conn(sk);
399 65726 :
400 65726 : self.event_set
401 65726 : .borrow_mut()
402 65726 : .as_mut()
403 65726 : .unwrap()
404 65726 : .update_event_set(&conn, event_mask);
405 65726 : }
406 :
407 60710 : fn add_safekeeper_event_set(
408 60710 : &self,
409 60710 : sk: &mut walproposer::bindings::Safekeeper,
410 60710 : event_mask: u32,
411 60710 : ) {
412 60710 : debug!(
413 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
414 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
415 : );
416 :
417 60710 : self.event_set
418 60710 : .borrow_mut()
419 60710 : .as_mut()
420 60710 : .unwrap()
421 60710 : .add_safekeeper(&self.get_conn(sk), event_mask);
422 60710 : }
423 :
424 38340 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
425 38340 : debug!(
426 0 : "rm_safekeeper_event_set, sk={:?}",
427 0 : sk as *mut walproposer::bindings::Safekeeper,
428 : );
429 :
430 38340 : self.event_set
431 38340 : .borrow_mut()
432 38340 : .as_mut()
433 38340 : .unwrap()
434 38340 : .remove_safekeeper(&self.get_conn(sk));
435 38340 : }
436 :
437 5984 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
438 5984 : debug!("active_state_update_event_set");
439 :
440 5984 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
441 5984 : self.event_set
442 5984 : .borrow_mut()
443 5984 : .as_mut()
444 5984 : .unwrap()
445 5984 : .refresh_event_set();
446 5984 : }
447 :
448 16456 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
449 16456 : 0
450 16456 : }
451 :
452 88455 : fn wait_event_set(
453 88455 : &self,
454 88455 : _: &mut walproposer::bindings::WalProposer,
455 88455 : timeout_millis: i64,
456 88455 : ) -> walproposer::walproposer::WaitResult {
457 88455 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
458 88455 : let mut conns = self.safekeepers.borrow_mut();
459 204599 : for conn in conns.iter_mut() {
460 204599 : if conn.socket.is_some() && conn.is_connecting {
461 30355 : conn.is_connecting = false;
462 30355 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
463 30355 : return walproposer::walproposer::WaitResult::Network(
464 30355 : conn.raw_ptr,
465 30355 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
466 30355 : );
467 174244 : }
468 174244 : if conn.socket.is_some() && conn.is_start_wal_push {
469 30355 : conn.is_start_wal_push = false;
470 30355 : debug!(
471 0 : "wait_event_set, start wal push to {}:{}",
472 : conn.host, conn.port
473 : );
474 30355 : return walproposer::walproposer::WaitResult::Network(
475 30355 : conn.raw_ptr,
476 30355 : WL_SOCKET_READABLE,
477 30355 : );
478 143889 : }
479 : }
480 27745 : drop(conns);
481 27745 :
482 27745 : let res = self
483 27745 : .event_set
484 27745 : .borrow_mut()
485 27745 : .as_mut()
486 27745 : .unwrap()
487 27745 : .wait(timeout_millis);
488 27745 :
489 27745 : debug!(
490 0 : "wait_event_set, timeout_millis={}, res={:?}",
491 : timeout_millis, res,
492 : );
493 27745 : res
494 88455 : }
495 :
496 0 : fn strong_random(&self, buf: &mut [u8]) -> bool {
497 0 : debug!("strong_random");
498 0 : buf.fill(0);
499 0 : true
500 0 : }
501 :
502 319 : fn finish_sync_safekeepers(&self, lsn: u64) {
503 319 : debug!("finish_sync_safekeepers, lsn={}", lsn);
504 319 : executor::exit(0, Lsn(lsn).to_string());
505 319 : }
506 :
507 149980 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
508 149980 : debug!("wp_log[{}] {}", level, msg);
509 149980 : if level == Level::Fatal || level == Level::Panic {
510 50 : if msg.contains("rejects our connection request with term") {
511 35 : // collected quorum with lower term, then got rejected by next connected safekeeper
512 35 : executor::exit(1, msg.to_owned());
513 35 : }
514 50 : if msg.contains("collected propTermStartLsn") && msg.contains(", but basebackup LSN ") {
515 0 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
516 0 : executor::exit(1, msg.to_owned());
517 50 : }
518 50 : if msg.contains("failed to download WAL for logical replicaiton") {
519 15 : // Recovery connection broken and recovery was failed
520 15 : executor::exit(1, msg.to_owned());
521 35 : }
522 50 : if msg.contains("missing majority of votes, collected") {
523 0 : // Voting bug when safekeeper disconnects after voting
524 0 : executor::exit(1, msg.to_owned());
525 50 : }
526 50 : panic!("unknown FATAL error from walproposer: {}", msg);
527 149930 : }
528 149930 : }
529 :
530 502 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
531 502 : let prop_lsn = wp.propTermStartLsn;
532 502 : let prop_term = wp.propTerm;
533 502 :
534 502 : let mut prev_lsn: u64 = 0;
535 502 : let mut prev_term: u64 = 0;
536 502 :
537 502 : unsafe {
538 502 : let history = wp.propTermHistory.entries;
539 502 : let len = wp.propTermHistory.n_entries as usize;
540 502 : if len > 1 {
541 450 : let entry = *history.wrapping_add(len - 2);
542 450 : prev_lsn = entry.lsn;
543 450 : prev_term = entry.term;
544 450 : }
545 : }
546 :
547 502 : let msg = format!(
548 502 : "prop_elected;{};{};{};{}",
549 502 : prop_lsn, prop_term, prev_lsn, prev_term
550 502 : );
551 502 :
552 502 : debug!(msg);
553 502 : self.os.log_event(msg);
554 502 : }
555 :
556 213 : fn get_redo_start_lsn(&self) -> u64 {
557 213 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
558 213 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
559 213 : }
560 :
561 1938 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
562 1938 : self.shmem.get()
563 1938 : }
564 :
565 160 : fn start_streaming(
566 160 : &self,
567 160 : startpos: u64,
568 160 : callback: &walproposer::walproposer::StreamingCallback,
569 160 : ) {
570 160 : let disk = &self.disk;
571 160 : let disk_lsn = disk.lock().flush_rec_ptr().0;
572 160 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
573 160 : if startpos < disk_lsn {
574 41 : debug!(
575 0 : "startpos < disk_lsn, it means we wrote some transaction even before streaming started"
576 : );
577 119 : }
578 160 : assert!(startpos <= disk_lsn);
579 160 : let mut broadcasted = Lsn(startpos);
580 :
581 : loop {
582 530 : let available = disk.lock().flush_rec_ptr();
583 530 : assert!(available >= broadcasted);
584 370 : callback.broadcast(broadcasted, available);
585 370 : broadcasted = available;
586 370 : callback.poll();
587 : }
588 : }
589 :
590 2237 : fn process_safekeeper_feedback(
591 2237 : &mut self,
592 2237 : wp: &mut walproposer::bindings::WalProposer,
593 2237 : _sk: &mut walproposer::bindings::Safekeeper,
594 2237 : ) {
595 2237 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
596 2237 : if wp.commitLsn > self.last_logged_commit_lsn {
597 520 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
598 520 : self.last_logged_commit_lsn = wp.commitLsn;
599 1717 : }
600 2237 : }
601 :
602 97 : fn get_flush_rec_ptr(&self) -> u64 {
603 97 : let lsn = self.disk.lock().flush_rec_ptr();
604 97 : debug!("get_flush_rec_ptr: {}", lsn);
605 97 : lsn.0
606 97 : }
607 :
608 502 : fn recovery_download(
609 502 : &self,
610 502 : wp: &mut walproposer::bindings::WalProposer,
611 502 : sk: &mut walproposer::bindings::Safekeeper,
612 502 : ) -> bool {
613 502 : let mut startpos = wp.truncateLsn;
614 502 : let endpos = wp.propTermStartLsn;
615 502 :
616 502 : if startpos == endpos {
617 237 : debug!("recovery_download: nothing to download");
618 237 : return true;
619 265 : }
620 265 :
621 265 : debug!("recovery_download from {} to {}", startpos, endpos,);
622 :
623 265 : let replication_prompt = format!(
624 265 : "START_REPLICATION {} {} {} {}",
625 265 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
626 265 : );
627 265 : let async_conn = self.get_conn(sk);
628 265 :
629 265 : let conn = self.os.open_tcp(async_conn.node_id);
630 265 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
631 265 :
632 265 : let chan = conn.recv_chan();
633 452 : while startpos < endpos {
634 265 : let event = chan.recv();
635 250 : match event {
636 : NetEvent::Closed => {
637 15 : debug!("connection closed in recovery");
638 15 : break;
639 : }
640 187 : NetEvent::Message(AnyMessage::Bytes(b)) => {
641 187 : debug!("got recovery bytes from safekeeper");
642 187 : self.disk.lock().write(startpos, &b);
643 187 : startpos += b.len() as u64;
644 : }
645 63 : NetEvent::Message(_) => unreachable!(),
646 : }
647 : }
648 :
649 202 : debug!("recovery finished at {}", startpos);
650 :
651 202 : startpos == endpos
652 439 : }
653 :
654 11290 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
655 11290 : let mut conn = self.get_conn(sk);
656 11290 : debug!("conn_finish to {}", conn.node_id);
657 11290 : if let Some(socket) = conn.socket.as_mut() {
658 3546 : socket.close();
659 7744 : } else {
660 7744 : // connection is already closed
661 7744 : }
662 11290 : conn.socket = None;
663 11290 : }
664 :
665 11042 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
666 11042 : "connection is closed, probably".into()
667 11042 : }
668 : }
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