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 216924 : pub fn new(host: String, port: String) -> Self {
44 216924 : // port number is the same as NodeId
45 216924 : let port_num = port.parse::<u32>().unwrap();
46 216924 : Self {
47 216924 : host,
48 216924 : port,
49 216924 : node_id: port_num,
50 216924 : socket: None,
51 216924 : is_connecting: false,
52 216924 : is_start_wal_push: false,
53 216924 : raw_ptr: std::ptr::null_mut(),
54 216924 : }
55 216924 : }
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 72308 : pub fn new(os: NodeOs) -> Self {
72 72308 : let node_events = os.node_events();
73 72308 : Self {
74 72308 : os,
75 72308 : chans: vec![Box::new(node_events)],
76 72308 : sk_ptrs: vec![std::ptr::null_mut()],
77 72308 : masks: vec![WL_SOCKET_READABLE],
78 72308 : }
79 72308 : }
80 :
81 : /// Leaves all readable channels at the beginning of the array.
82 218085 : fn sort_readable(&mut self) -> usize {
83 218085 : let mut cnt = 1;
84 515996 : for i in 1..self.chans.len() {
85 515996 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
86 515996 : self.chans.swap(i, cnt);
87 515996 : self.sk_ptrs.swap(i, cnt);
88 515996 : self.masks.swap(i, cnt);
89 515996 : cnt += 1;
90 515996 : }
91 : }
92 218085 : cnt
93 218085 : }
94 :
95 530849 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
96 530849 : let index = self
97 530849 : .sk_ptrs
98 530849 : .iter()
99 2003167 : .position(|&ptr| ptr == conn.raw_ptr)
100 530849 : .expect("safekeeper should exist in event set");
101 530849 : self.masks[index] = event_mask;
102 530849 : }
103 :
104 480756 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
105 1162553 : for ptr in self.sk_ptrs.iter() {
106 1162553 : assert!(*ptr != sk.raw_ptr);
107 : }
108 :
109 480756 : self.chans.push(Box::new(
110 480756 : sk.socket
111 480756 : .as_ref()
112 480756 : .expect("socket should not be closed")
113 480756 : .recv_chan(),
114 480756 : ));
115 480756 : self.sk_ptrs.push(sk.raw_ptr);
116 480756 : self.masks.push(event_mask);
117 480756 : }
118 :
119 303065 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
120 644957 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
121 303065 : if index.is_none() {
122 46 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
123 46 : return;
124 303019 : }
125 303019 : let index = index.unwrap();
126 303019 :
127 303019 : self.chans.remove(index);
128 303019 : self.sk_ptrs.remove(index);
129 303019 : self.masks.remove(index);
130 303019 :
131 303019 : // to simulate the actual behaviour
132 303019 : self.refresh_event_set();
133 303065 : }
134 :
135 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
136 339921 : fn refresh_event_set(&mut self) {
137 955632 : for (i, mask) in self.masks.iter_mut().enumerate() {
138 955632 : if i == 0 {
139 339921 : continue;
140 615711 : }
141 615711 :
142 615711 : let mut mask_sk: u32 = 0;
143 615711 : let mut mask_nwr: u32 = 0;
144 615711 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
145 615711 :
146 615711 : 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 615711 : }
153 : }
154 339921 : }
155 :
156 : /// Wait for events on all channels.
157 218085 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
158 : // all channels are always writeable
159 734081 : for (i, mask) in self.masks.iter().enumerate() {
160 734081 : 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 734081 : }
166 : }
167 :
168 218085 : let cnt = self.sort_readable();
169 218085 :
170 218085 : let slice = &self.chans[0..cnt];
171 218085 : match executor::epoll_chans(slice, timeout_millis) {
172 90513 : None => walproposer::walproposer::WaitResult::Timeout,
173 : Some(0) => {
174 2948 : let msg = self.os.node_events().must_recv();
175 2948 : match msg {
176 2948 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
177 2948 : // got a notification about new WAL available
178 2948 : }
179 0 : NodeEvent::Internal(_) => unreachable!(),
180 0 : NodeEvent::Accept(_) => unreachable!(),
181 : }
182 2948 : walproposer::walproposer::WaitResult::Latch
183 : }
184 124624 : Some(index) => walproposer::walproposer::WaitResult::Network(
185 124624 : self.sk_ptrs[index],
186 124624 : WL_SOCKET_READABLE,
187 124624 : ),
188 : }
189 218085 : }
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 72308 : pub fn new(args: Args) -> Self {
213 72308 : // initialize connection state for each safekeeper
214 72308 : let sk_conns = args
215 72308 : .config
216 72308 : .safekeepers_list
217 72308 : .iter()
218 216924 : .map(|s| {
219 216924 : SafekeeperConn::new(
220 216924 : s.split(':').next().unwrap().to_string(),
221 216924 : s.split(':').nth(1).unwrap().to_string(),
222 216924 : )
223 216924 : })
224 72308 : .collect::<Vec<_>>();
225 72308 :
226 72308 : Self {
227 72308 : os: args.os,
228 72308 : safekeepers: RefCell::new(sk_conns),
229 72308 : disk: args.disk,
230 72308 : redo_start_lsn: args.redo_start_lsn,
231 72308 : last_logged_commit_lsn: 0,
232 72308 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
233 72308 : config: args.config,
234 72308 : event_set: RefCell::new(None),
235 72308 : }
236 72308 : }
237 :
238 : /// Get SafekeeperConn for the given Safekeeper.
239 2350052 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
240 2350052 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
241 2350052 : let state = self.safekeepers.borrow_mut();
242 2350052 : RefMut::map(state, |v| {
243 2350052 : v.iter_mut()
244 4695243 : .find(|conn| conn.port == sk_port)
245 2350052 : .expect("safekeeper conn not found by port")
246 2350052 : })
247 2350052 : }
248 : }
249 :
250 : impl ApiImpl for SimulationApi {
251 2508323 : fn get_current_timestamp(&self) -> i64 {
252 2508323 : debug!("get_current_timestamp");
253 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
254 : // milliseconds, so add 10^3
255 2508323 : self.os.now() as i64 * 1000
256 2508323 : }
257 :
258 6905 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
259 6905 : let mut shmem = unsafe { *self.get_shmem_state() };
260 6905 : shmem.propEpochStartLsn.value = donor_lsn;
261 6905 : shmem.donor_conninfo = donor.conninfo;
262 6905 : }
263 :
264 267081 : fn conn_status(
265 267081 : &self,
266 267081 : _: &mut walproposer::bindings::Safekeeper,
267 267081 : ) -> walproposer::bindings::WalProposerConnStatusType {
268 267081 : debug!("conn_status");
269 : // break the connection with a 10% chance
270 267081 : if self.os.random(100) < 10 {
271 26703 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
272 : } else {
273 240378 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
274 : }
275 267081 : }
276 :
277 267081 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
278 267081 : debug!("conn_connect_start");
279 267081 : let mut conn = self.get_conn(sk);
280 267081 :
281 267081 : assert!(conn.socket.is_none());
282 267081 : let socket = self.os.open_tcp(conn.node_id);
283 267081 : conn.socket = Some(socket);
284 267081 : conn.raw_ptr = sk;
285 267081 : conn.is_connecting = true;
286 267081 : }
287 :
288 240378 : fn conn_connect_poll(
289 240378 : &self,
290 240378 : _: &mut walproposer::bindings::Safekeeper,
291 240378 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
292 240378 : debug!("conn_connect_poll");
293 : // TODO: break the connection here
294 240378 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
295 240378 : }
296 :
297 240378 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
298 240378 : debug!("conn_send_query: {}", query);
299 240378 : self.get_conn(sk).is_start_wal_push = true;
300 240378 : true
301 240378 : }
302 :
303 240378 : fn conn_get_query_result(
304 240378 : &self,
305 240378 : _: &mut walproposer::bindings::Safekeeper,
306 240378 : ) -> walproposer::bindings::WalProposerExecStatusType {
307 240378 : debug!("conn_get_query_result");
308 : // TODO: break the connection here
309 240378 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
310 240378 : }
311 :
312 134569 : fn conn_async_read(
313 134569 : &self,
314 134569 : sk: &mut walproposer::bindings::Safekeeper,
315 134569 : vec: &mut Vec<u8>,
316 134569 : ) -> walproposer::bindings::PGAsyncReadResult {
317 134569 : debug!("conn_async_read");
318 134569 : let mut conn = self.get_conn(sk);
319 :
320 134569 : let socket = if let Some(socket) = conn.socket.as_mut() {
321 134569 : socket
322 : } else {
323 : // socket is already closed
324 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
325 : };
326 :
327 134569 : let msg = socket.recv_chan().try_recv();
328 :
329 122757 : match msg {
330 : None => {
331 : // no message is ready
332 11812 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
333 : }
334 : Some(NetEvent::Closed) => {
335 : // connection is closed
336 60328 : debug!("conn_async_read: connection is closed");
337 60328 : conn.socket = None;
338 60328 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
339 : }
340 62429 : Some(NetEvent::Message(msg)) => {
341 : // got a message
342 62429 : let b = match msg {
343 62429 : desim::proto::AnyMessage::Bytes(b) => b,
344 0 : _ => unreachable!(),
345 : };
346 62429 : vec.extend_from_slice(&b);
347 62429 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
348 : }
349 : }
350 134569 : }
351 :
352 269391 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
353 269391 : let mut conn = self.get_conn(sk);
354 269391 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
355 269391 : let socket = conn.socket.as_mut().unwrap();
356 269391 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
357 269391 : true
358 269391 : }
359 :
360 32391 : fn conn_async_write(
361 32391 : &self,
362 32391 : sk: &mut walproposer::bindings::Safekeeper,
363 32391 : buf: &[u8],
364 32391 : ) -> walproposer::bindings::PGAsyncWriteResult {
365 32391 : let mut conn = self.get_conn(sk);
366 32391 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
367 32391 : if let Some(socket) = conn.socket.as_mut() {
368 32391 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
369 32391 : } 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 32391 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
375 32391 : }
376 :
377 7301 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
378 7301 : debug!("wal_reader_allocate");
379 7301 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
380 7301 : }
381 :
382 25090 : fn wal_read(
383 25090 : &self,
384 25090 : _sk: &mut walproposer::bindings::Safekeeper,
385 25090 : buf: &mut [u8],
386 25090 : startpos: u64,
387 25090 : ) -> NeonWALReadResult {
388 25090 : self.disk.lock().read(startpos, buf);
389 25090 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
390 25090 : }
391 :
392 72308 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
393 72308 : debug!("init_event_set");
394 72308 : let new_event_set = EventSet::new(self.os.clone());
395 72308 : let old_event_set = self.event_set.replace(Some(new_event_set));
396 72308 : assert!(old_event_set.is_none());
397 72308 : }
398 :
399 530849 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
400 530849 : debug!(
401 0 : "update_event_set, sk={:?}, events_mask={:#b}",
402 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
403 : );
404 530849 : let conn = self.get_conn(sk);
405 530849 :
406 530849 : self.event_set
407 530849 : .borrow_mut()
408 530849 : .as_mut()
409 530849 : .unwrap()
410 530849 : .update_event_set(&conn, event_mask);
411 530849 : }
412 :
413 480756 : fn add_safekeeper_event_set(
414 480756 : &self,
415 480756 : sk: &mut walproposer::bindings::Safekeeper,
416 480756 : event_mask: u32,
417 480756 : ) {
418 480756 : debug!(
419 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
420 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
421 : );
422 :
423 480756 : self.event_set
424 480756 : .borrow_mut()
425 480756 : .as_mut()
426 480756 : .unwrap()
427 480756 : .add_safekeeper(&self.get_conn(sk), event_mask);
428 480756 : }
429 :
430 303065 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
431 303065 : debug!(
432 0 : "rm_safekeeper_event_set, sk={:?}",
433 0 : sk as *mut walproposer::bindings::Safekeeper,
434 : );
435 :
436 303065 : self.event_set
437 303065 : .borrow_mut()
438 303065 : .as_mut()
439 303065 : .unwrap()
440 303065 : .remove_safekeeper(&self.get_conn(sk));
441 303065 : }
442 :
443 36902 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
444 36902 : debug!("active_state_update_event_set");
445 :
446 36902 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
447 36902 : self.event_set
448 36902 : .borrow_mut()
449 36902 : .as_mut()
450 36902 : .unwrap()
451 36902 : .refresh_event_set();
452 36902 : }
453 :
454 104034 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
455 104034 : 0
456 104034 : }
457 :
458 698841 : fn wait_event_set(
459 698841 : &self,
460 698841 : _: &mut walproposer::bindings::WalProposer,
461 698841 : timeout_millis: i64,
462 698841 : ) -> walproposer::walproposer::WaitResult {
463 698841 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
464 698841 : let mut conns = self.safekeepers.borrow_mut();
465 1615423 : for conn in conns.iter_mut() {
466 1615423 : if conn.socket.is_some() && conn.is_connecting {
467 240378 : conn.is_connecting = false;
468 240378 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
469 240378 : return walproposer::walproposer::WaitResult::Network(
470 240378 : conn.raw_ptr,
471 240378 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
472 240378 : );
473 1375045 : }
474 1375045 : if conn.socket.is_some() && conn.is_start_wal_push {
475 240378 : conn.is_start_wal_push = false;
476 240378 : debug!(
477 0 : "wait_event_set, start wal push to {}:{}",
478 : conn.host, conn.port
479 : );
480 240378 : return walproposer::walproposer::WaitResult::Network(
481 240378 : conn.raw_ptr,
482 240378 : WL_SOCKET_READABLE,
483 240378 : );
484 1134667 : }
485 : }
486 218085 : drop(conns);
487 218085 :
488 218085 : let res = self
489 218085 : .event_set
490 218085 : .borrow_mut()
491 218085 : .as_mut()
492 218085 : .unwrap()
493 218085 : .wait(timeout_millis);
494 218085 :
495 218085 : debug!(
496 0 : "wait_event_set, timeout_millis={}, res={:?}",
497 : timeout_millis, res,
498 : );
499 149673 : res
500 630429 : }
501 :
502 72308 : fn strong_random(&self, buf: &mut [u8]) -> bool {
503 72308 : debug!("strong_random");
504 72308 : buf.fill(0);
505 72308 : true
506 72308 : }
507 :
508 2746 : fn finish_sync_safekeepers(&self, lsn: u64) {
509 2746 : debug!("finish_sync_safekeepers, lsn={}", lsn);
510 2746 : executor::exit(0, Lsn(lsn).to_string());
511 2746 : }
512 :
513 713516 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
514 713516 : debug!("wp_log[{}] {}", level, msg);
515 713516 : if level == Level::Fatal || level == Level::Panic {
516 606 : if msg.contains("rejects our connection request with term") {
517 335 : // collected quorum with lower term, then got rejected by next connected safekeeper
518 335 : executor::exit(1, msg.to_owned());
519 335 : }
520 606 : if msg.contains("collected propEpochStartLsn") && msg.contains(", but basebackup LSN ")
521 35 : {
522 35 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
523 35 : executor::exit(1, msg.to_owned());
524 571 : }
525 606 : if msg.contains("failed to download WAL for logical replicaiton") {
526 144 : // Recovery connection broken and recovery was failed
527 144 : executor::exit(1, msg.to_owned());
528 462 : }
529 606 : if msg.contains("missing majority of votes, collected") {
530 92 : // Voting bug when safekeeper disconnects after voting
531 92 : executor::exit(1, msg.to_owned());
532 514 : }
533 606 : panic!("unknown FATAL error from walproposer: {}", msg);
534 712910 : }
535 712910 : }
536 :
537 5618 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
538 5618 : let prop_lsn = wp.propEpochStartLsn;
539 5618 : let prop_term = wp.propTerm;
540 5618 :
541 5618 : let mut prev_lsn: u64 = 0;
542 5618 : let mut prev_term: u64 = 0;
543 5618 :
544 5618 : unsafe {
545 5618 : let history = wp.propTermHistory.entries;
546 5618 : let len = wp.propTermHistory.n_entries as usize;
547 5618 : if len > 1 {
548 3719 : let entry = *history.wrapping_add(len - 2);
549 3719 : prev_lsn = entry.lsn;
550 3719 : prev_term = entry.term;
551 3719 : }
552 : }
553 :
554 5618 : let msg = format!(
555 5618 : "prop_elected;{};{};{};{}",
556 5618 : prop_lsn, prop_term, prev_lsn, prev_term
557 5618 : );
558 5618 :
559 5618 : debug!(msg);
560 5618 : self.os.log_event(msg);
561 5618 : }
562 :
563 2172 : fn get_redo_start_lsn(&self) -> u64 {
564 2172 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
565 2172 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
566 2172 : }
567 :
568 18211 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
569 18211 : self.shmem.get()
570 18211 : }
571 :
572 1203 : fn start_streaming(
573 1203 : &self,
574 1203 : startpos: u64,
575 1203 : callback: &walproposer::walproposer::StreamingCallback,
576 1203 : ) {
577 1203 : let disk = &self.disk;
578 1203 : let disk_lsn = disk.lock().flush_rec_ptr().0;
579 1203 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
580 1203 : if startpos < disk_lsn {
581 359 : debug!("startpos < disk_lsn, it means we wrote some transaction even before streaming started");
582 844 : }
583 1203 : assert!(startpos <= disk_lsn);
584 1203 : let mut broadcasted = Lsn(startpos);
585 :
586 : loop {
587 3935 : let available = disk.lock().flush_rec_ptr();
588 3935 : assert!(available >= broadcasted);
589 2732 : callback.broadcast(broadcasted, available);
590 2732 : broadcasted = available;
591 2732 : callback.poll();
592 : }
593 : }
594 :
595 12709 : fn process_safekeeper_feedback(
596 12709 : &mut self,
597 12709 : wp: &mut walproposer::bindings::WalProposer,
598 12709 : _sk: &mut walproposer::bindings::Safekeeper,
599 12709 : ) {
600 12709 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
601 12709 : if wp.commitLsn > self.last_logged_commit_lsn {
602 2699 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
603 2699 : self.last_logged_commit_lsn = wp.commitLsn;
604 10010 : }
605 12709 : }
606 :
607 792 : fn get_flush_rec_ptr(&self) -> u64 {
608 792 : let lsn = self.disk.lock().flush_rec_ptr();
609 792 : debug!("get_flush_rec_ptr: {}", lsn);
610 792 : lsn.0
611 792 : }
612 :
613 5618 : fn recovery_download(
614 5618 : &self,
615 5618 : wp: &mut walproposer::bindings::WalProposer,
616 5618 : sk: &mut walproposer::bindings::Safekeeper,
617 5618 : ) -> bool {
618 5618 : let mut startpos = wp.truncateLsn;
619 5618 : let endpos = wp.propEpochStartLsn;
620 5618 :
621 5618 : if startpos == endpos {
622 3436 : debug!("recovery_download: nothing to download");
623 3436 : return true;
624 2182 : }
625 2182 :
626 2182 : debug!("recovery_download from {} to {}", startpos, endpos,);
627 :
628 2182 : let replication_prompt = format!(
629 2182 : "START_REPLICATION {} {} {} {}",
630 2182 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
631 2182 : );
632 2182 : let async_conn = self.get_conn(sk);
633 2182 :
634 2182 : let conn = self.os.open_tcp(async_conn.node_id);
635 2182 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
636 2182 :
637 2182 : let chan = conn.recv_chan();
638 3676 : while startpos < endpos {
639 2182 : let event = chan.recv();
640 2038 : match event {
641 : NetEvent::Closed => {
642 144 : debug!("connection closed in recovery");
643 144 : break;
644 : }
645 2038 : NetEvent::Message(AnyMessage::Bytes(b)) => {
646 2038 : debug!("got recovery bytes from safekeeper");
647 1494 : self.disk.lock().write(startpos, &b);
648 1494 : startpos += b.len() as u64;
649 : }
650 0 : NetEvent::Message(_) => unreachable!(),
651 : }
652 : }
653 :
654 1638 : debug!("recovery finished at {}", startpos);
655 :
656 1638 : startpos == endpos
657 5074 : }
658 :
659 89390 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
660 89390 : let mut conn = self.get_conn(sk);
661 89390 : debug!("conn_finish to {}", conn.node_id);
662 89390 : if let Some(socket) = conn.socket.as_mut() {
663 29016 : socket.close();
664 60374 : } else {
665 60374 : // connection is already closed
666 60374 : }
667 89390 : conn.socket = None;
668 89390 : }
669 :
670 87031 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
671 87031 : "connection is closed, probably".into()
672 87031 : }
673 : }
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