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 26772 : pub fn new(host: String, port: String) -> Self {
38 26772 : // port number is the same as NodeId
39 26772 : let port_num = port.parse::<u32>().unwrap();
40 26772 : Self {
41 26772 : host,
42 26772 : port,
43 26772 : node_id: port_num,
44 26772 : socket: None,
45 26772 : is_connecting: false,
46 26772 : is_start_wal_push: false,
47 26772 : raw_ptr: std::ptr::null_mut(),
48 26772 : }
49 26772 : }
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 8924 : pub fn new(os: NodeOs) -> Self {
66 8924 : let node_events = os.node_events();
67 8924 : Self {
68 8924 : os,
69 8924 : chans: vec![Box::new(node_events)],
70 8924 : sk_ptrs: vec![std::ptr::null_mut()],
71 8924 : masks: vec![WL_SOCKET_READABLE],
72 8924 : }
73 8924 : }
74 :
75 : /// Leaves all readable channels at the beginning of the array.
76 27641 : fn sort_readable(&mut self) -> usize {
77 27641 : let mut cnt = 1;
78 64140 : for i in 1..self.chans.len() {
79 64140 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
80 64140 : self.chans.swap(i, cnt);
81 64140 : self.sk_ptrs.swap(i, cnt);
82 64140 : self.masks.swap(i, cnt);
83 64140 : cnt += 1;
84 64140 : }
85 : }
86 27641 : cnt
87 27641 : }
88 :
89 65163 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
90 65163 : let index = self
91 65163 : .sk_ptrs
92 65163 : .iter()
93 246733 : .position(|&ptr| ptr == conn.raw_ptr)
94 65163 : .expect("safekeeper should exist in event set");
95 65163 : self.masks[index] = event_mask;
96 65163 : }
97 :
98 59814 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
99 144678 : for ptr in self.sk_ptrs.iter() {
100 144678 : assert!(*ptr != sk.raw_ptr);
101 : }
102 :
103 59814 : self.chans.push(Box::new(
104 59814 : sk.socket
105 59814 : .as_ref()
106 59814 : .expect("socket should not be closed")
107 59814 : .recv_chan(),
108 59814 : ));
109 59814 : self.sk_ptrs.push(sk.raw_ptr);
110 59814 : self.masks.push(event_mask);
111 59814 : }
112 :
113 38185 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
114 81062 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
115 38185 : if index.is_none() {
116 5 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
117 5 : return;
118 38180 : }
119 38180 : let index = index.unwrap();
120 38180 :
121 38180 : self.chans.remove(index);
122 38180 : self.sk_ptrs.remove(index);
123 38180 : self.masks.remove(index);
124 38180 :
125 38180 : // to simulate the actual behaviour
126 38180 : self.refresh_event_set();
127 38185 : }
128 :
129 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
130 43084 : fn refresh_event_set(&mut self) {
131 120095 : for (i, mask) in self.masks.iter_mut().enumerate() {
132 120095 : if i == 0 {
133 43084 : continue;
134 77011 : }
135 77011 :
136 77011 : let mut mask_sk: u32 = 0;
137 77011 : let mut mask_nwr: u32 = 0;
138 77011 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
139 77011 :
140 77011 : 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 77011 : }
147 : }
148 43084 : }
149 :
150 : /// Wait for events on all channels.
151 27641 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
152 : // all channels are always writeable
153 91781 : for (i, mask) in self.masks.iter().enumerate() {
154 91781 : 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 91781 : }
160 : }
161 :
162 27641 : let cnt = self.sort_readable();
163 27641 :
164 27641 : let slice = &self.chans[0..cnt];
165 27641 : match executor::epoll_chans(slice, timeout_millis) {
166 11220 : None => walproposer::walproposer::WaitResult::Timeout,
167 : Some(0) => {
168 491 : let msg = self.os.node_events().must_recv();
169 491 : match msg {
170 491 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
171 491 : // got a notification about new WAL available
172 491 : }
173 0 : NodeEvent::Internal(_) => unreachable!(),
174 0 : NodeEvent::Accept(_) => unreachable!(),
175 : }
176 491 : walproposer::walproposer::WaitResult::Latch
177 : }
178 15930 : Some(index) => walproposer::walproposer::WaitResult::Network(
179 15930 : self.sk_ptrs[index],
180 15930 : WL_SOCKET_READABLE,
181 15930 : ),
182 : }
183 27641 : }
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 8924 : pub fn new(args: Args) -> Self {
207 8924 : // initialize connection state for each safekeeper
208 8924 : let sk_conns = args
209 8924 : .config
210 8924 : .safekeepers_list
211 8924 : .iter()
212 26772 : .map(|s| {
213 26772 : SafekeeperConn::new(
214 26772 : s.split(':').next().unwrap().to_string(),
215 26772 : s.split(':').nth(1).unwrap().to_string(),
216 26772 : )
217 26772 : })
218 8924 : .collect::<Vec<_>>();
219 8924 :
220 8924 : Self {
221 8924 : os: args.os,
222 8924 : safekeepers: RefCell::new(sk_conns),
223 8924 : disk: args.disk,
224 8924 : redo_start_lsn: args.redo_start_lsn,
225 8924 : last_logged_commit_lsn: 0,
226 8924 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
227 8924 : config: args.config,
228 8924 : event_set: RefCell::new(None),
229 8924 : }
230 8924 : }
231 :
232 : /// Get SafekeeperConn for the given Safekeeper.
233 292935 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
234 292935 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
235 292935 : let state = self.safekeepers.borrow_mut();
236 292935 : RefMut::map(state, |v| {
237 292935 : v.iter_mut()
238 584655 : .find(|conn| conn.port == sk_port)
239 292935 : .expect("safekeeper conn not found by port")
240 292935 : })
241 292935 : }
242 : }
243 :
244 : impl ApiImpl for SimulationApi {
245 313548 : fn get_current_timestamp(&self) -> i64 {
246 313548 : debug!("get_current_timestamp");
247 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
248 : // milliseconds, so add 10^3
249 313548 : self.os.now() as i64 * 1000
250 313548 : }
251 :
252 750 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
253 750 : let mut shmem = unsafe { *self.get_shmem_state() };
254 750 : shmem.propEpochStartLsn.value = donor_lsn;
255 750 : shmem.donor_conninfo = donor.conninfo;
256 750 : }
257 :
258 33209 : fn conn_status(
259 33209 : &self,
260 33209 : _: &mut walproposer::bindings::Safekeeper,
261 33209 : ) -> walproposer::bindings::WalProposerConnStatusType {
262 33209 : debug!("conn_status");
263 : // break the connection with a 10% chance
264 33209 : if self.os.random(100) < 10 {
265 3302 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
266 : } else {
267 29907 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
268 : }
269 33209 : }
270 :
271 33209 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
272 33209 : debug!("conn_connect_start");
273 33209 : let mut conn = self.get_conn(sk);
274 33209 :
275 33209 : assert!(conn.socket.is_none());
276 33209 : let socket = self.os.open_tcp(conn.node_id);
277 33209 : conn.socket = Some(socket);
278 33209 : conn.raw_ptr = sk;
279 33209 : conn.is_connecting = true;
280 33209 : }
281 :
282 29907 : fn conn_connect_poll(
283 29907 : &self,
284 29907 : _: &mut walproposer::bindings::Safekeeper,
285 29907 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
286 29907 : debug!("conn_connect_poll");
287 : // TODO: break the connection here
288 29907 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
289 29907 : }
290 :
291 29907 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
292 29907 : debug!("conn_send_query: {}", query);
293 29907 : self.get_conn(sk).is_start_wal_push = true;
294 29907 : true
295 29907 : }
296 :
297 29907 : fn conn_get_query_result(
298 29907 : &self,
299 29907 : _: &mut walproposer::bindings::Safekeeper,
300 29907 : ) -> walproposer::bindings::WalProposerExecStatusType {
301 29907 : debug!("conn_get_query_result");
302 : // TODO: break the connection here
303 29907 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
304 29907 : }
305 :
306 17474 : fn conn_async_read(
307 17474 : &self,
308 17474 : sk: &mut walproposer::bindings::Safekeeper,
309 17474 : vec: &mut Vec<u8>,
310 17474 : ) -> walproposer::bindings::PGAsyncReadResult {
311 17474 : debug!("conn_async_read");
312 17474 : let mut conn = self.get_conn(sk);
313 :
314 17474 : let socket = if let Some(socket) = conn.socket.as_mut() {
315 17474 : socket
316 : } else {
317 : // socket is already closed
318 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
319 : };
320 :
321 17474 : let msg = socket.recv_chan().try_recv();
322 :
323 15773 : match msg {
324 : None => {
325 : // no message is ready
326 1701 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
327 : }
328 : Some(NetEvent::Closed) => {
329 : // connection is closed
330 8005 : debug!("conn_async_read: connection is closed");
331 8005 : conn.socket = None;
332 8005 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
333 : }
334 7768 : Some(NetEvent::Message(msg)) => {
335 : // got a message
336 7768 : let b = match msg {
337 7768 : desim::proto::AnyMessage::Bytes(b) => b,
338 0 : _ => unreachable!(),
339 : };
340 7768 : vec.extend_from_slice(&b);
341 7768 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
342 : }
343 : }
344 17474 : }
345 :
346 33405 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
347 33405 : let mut conn = self.get_conn(sk);
348 33405 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
349 33405 : let socket = conn.socket.as_mut().unwrap();
350 33405 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
351 33405 : true
352 33405 : }
353 :
354 3969 : fn conn_async_write(
355 3969 : &self,
356 3969 : sk: &mut walproposer::bindings::Safekeeper,
357 3969 : buf: &[u8],
358 3969 : ) -> walproposer::bindings::PGAsyncWriteResult {
359 3969 : let mut conn = self.get_conn(sk);
360 3969 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
361 3969 : if let Some(socket) = conn.socket.as_mut() {
362 3969 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
363 3969 : } 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 3969 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
369 3969 : }
370 :
371 766 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
372 766 : debug!("wal_reader_allocate");
373 766 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
374 766 : }
375 :
376 826 : fn wal_read(
377 826 : &self,
378 826 : _sk: &mut walproposer::bindings::Safekeeper,
379 826 : buf: &mut [u8],
380 826 : startpos: u64,
381 826 : ) -> NeonWALReadResult {
382 826 : self.disk.lock().read(startpos, buf);
383 826 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
384 826 : }
385 :
386 8924 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
387 8924 : debug!("init_event_set");
388 8924 : let new_event_set = EventSet::new(self.os.clone());
389 8924 : let old_event_set = self.event_set.replace(Some(new_event_set));
390 8924 : assert!(old_event_set.is_none());
391 8924 : }
392 :
393 65163 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
394 65163 : debug!(
395 0 : "update_event_set, sk={:?}, events_mask={:#b}",
396 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
397 : );
398 65163 : let conn = self.get_conn(sk);
399 65163 :
400 65163 : self.event_set
401 65163 : .borrow_mut()
402 65163 : .as_mut()
403 65163 : .unwrap()
404 65163 : .update_event_set(&conn, event_mask);
405 65163 : }
406 :
407 59814 : fn add_safekeeper_event_set(
408 59814 : &self,
409 59814 : sk: &mut walproposer::bindings::Safekeeper,
410 59814 : event_mask: u32,
411 59814 : ) {
412 59814 : debug!(
413 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
414 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
415 : );
416 :
417 59814 : self.event_set
418 59814 : .borrow_mut()
419 59814 : .as_mut()
420 59814 : .unwrap()
421 59814 : .add_safekeeper(&self.get_conn(sk), event_mask);
422 59814 : }
423 :
424 38185 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
425 38185 : debug!(
426 0 : "rm_safekeeper_event_set, sk={:?}",
427 0 : sk as *mut walproposer::bindings::Safekeeper,
428 : );
429 :
430 38185 : self.event_set
431 38185 : .borrow_mut()
432 38185 : .as_mut()
433 38185 : .unwrap()
434 38185 : .remove_safekeeper(&self.get_conn(sk));
435 38185 : }
436 :
437 4904 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
438 4904 : debug!("active_state_update_event_set");
439 :
440 4904 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
441 4904 : self.event_set
442 4904 : .borrow_mut()
443 4904 : .as_mut()
444 4904 : .unwrap()
445 4904 : .refresh_event_set();
446 4904 : }
447 :
448 13429 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
449 13429 : 0
450 13429 : }
451 :
452 87455 : fn wait_event_set(
453 87455 : &self,
454 87455 : _: &mut walproposer::bindings::WalProposer,
455 87455 : timeout_millis: i64,
456 87455 : ) -> walproposer::walproposer::WaitResult {
457 87455 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
458 87455 : let mut conns = self.safekeepers.borrow_mut();
459 202535 : for conn in conns.iter_mut() {
460 202535 : if conn.socket.is_some() && conn.is_connecting {
461 29907 : conn.is_connecting = false;
462 29907 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
463 29907 : return walproposer::walproposer::WaitResult::Network(
464 29907 : conn.raw_ptr,
465 29907 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
466 29907 : );
467 172628 : }
468 172628 : if conn.socket.is_some() && conn.is_start_wal_push {
469 29907 : conn.is_start_wal_push = false;
470 29907 : debug!(
471 0 : "wait_event_set, start wal push to {}:{}",
472 : conn.host, conn.port
473 : );
474 29907 : return walproposer::walproposer::WaitResult::Network(
475 29907 : conn.raw_ptr,
476 29907 : WL_SOCKET_READABLE,
477 29907 : );
478 142721 : }
479 : }
480 27641 : drop(conns);
481 27641 :
482 27641 : let res = self
483 27641 : .event_set
484 27641 : .borrow_mut()
485 27641 : .as_mut()
486 27641 : .unwrap()
487 27641 : .wait(timeout_millis);
488 27641 :
489 27641 : debug!(
490 0 : "wait_event_set, timeout_millis={}, res={:?}",
491 : timeout_millis, res,
492 : );
493 27641 : res
494 87455 : }
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 :
502 337 : fn finish_sync_safekeepers(&self, lsn: u64) {
503 337 : debug!("finish_sync_safekeepers, lsn={}", lsn);
504 337 : executor::exit(0, Lsn(lsn).to_string());
505 337 : }
506 :
507 147649 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
508 147649 : debug!("wp_log[{}] {}", level, msg);
509 147649 : if level == Level::Fatal || level == Level::Panic {
510 55 : if msg.contains("rejects our connection request with term") {
511 40 : // collected quorum with lower term, then got rejected by next connected safekeeper
512 40 : executor::exit(1, msg.to_owned());
513 40 : }
514 55 : if msg.contains("collected propTermStartLsn") && msg.contains(", but basebackup LSN ") {
515 5 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
516 5 : executor::exit(1, msg.to_owned());
517 50 : }
518 55 : if msg.contains("failed to download WAL for logical replicaiton") {
519 10 : // Recovery connection broken and recovery was failed
520 10 : executor::exit(1, msg.to_owned());
521 45 : }
522 55 : 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 55 : }
526 55 : panic!("unknown FATAL error from walproposer: {}", msg);
527 147594 : }
528 147594 : }
529 :
530 476 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
531 476 : let prop_lsn = wp.propTermStartLsn;
532 476 : let prop_term = wp.propTerm;
533 476 :
534 476 : let mut prev_lsn: u64 = 0;
535 476 : let mut prev_term: u64 = 0;
536 476 :
537 476 : unsafe {
538 476 : let history = wp.propTermHistory.entries;
539 476 : let len = wp.propTermHistory.n_entries as usize;
540 476 : if len > 1 {
541 421 : let entry = *history.wrapping_add(len - 2);
542 421 : prev_lsn = entry.lsn;
543 421 : prev_term = entry.term;
544 421 : }
545 : }
546 :
547 476 : let msg = format!(
548 476 : "prop_elected;{};{};{};{}",
549 476 : prop_lsn, prop_term, prev_lsn, prev_term
550 476 : );
551 476 :
552 476 : debug!(msg);
553 476 : self.os.log_event(msg);
554 476 : }
555 :
556 211 : fn get_redo_start_lsn(&self) -> u64 {
557 211 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
558 211 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
559 211 : }
560 :
561 1712 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
562 1712 : self.shmem.get()
563 1712 : }
564 :
565 136 : fn start_streaming(
566 136 : &self,
567 136 : startpos: u64,
568 136 : callback: &walproposer::walproposer::StreamingCallback,
569 136 : ) {
570 136 : let disk = &self.disk;
571 136 : let disk_lsn = disk.lock().flush_rec_ptr().0;
572 136 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
573 136 : if startpos < disk_lsn {
574 35 : debug!(
575 0 : "startpos < disk_lsn, it means we wrote some transaction even before streaming started"
576 : );
577 101 : }
578 136 : assert!(startpos <= disk_lsn);
579 136 : let mut broadcasted = Lsn(startpos);
580 :
581 : loop {
582 468 : let available = disk.lock().flush_rec_ptr();
583 468 : assert!(available >= broadcasted);
584 332 : callback.broadcast(broadcasted, available);
585 332 : broadcasted = available;
586 332 : callback.poll();
587 : }
588 : }
589 :
590 1854 : fn process_safekeeper_feedback(
591 1854 : &mut self,
592 1854 : wp: &mut walproposer::bindings::WalProposer,
593 1854 : _sk: &mut walproposer::bindings::Safekeeper,
594 1854 : ) {
595 1854 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
596 1854 : if wp.commitLsn > self.last_logged_commit_lsn {
597 425 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
598 425 : self.last_logged_commit_lsn = wp.commitLsn;
599 1429 : }
600 1854 : }
601 :
602 96 : fn get_flush_rec_ptr(&self) -> u64 {
603 96 : let lsn = self.disk.lock().flush_rec_ptr();
604 96 : debug!("get_flush_rec_ptr: {}", lsn);
605 96 : lsn.0
606 96 : }
607 :
608 476 : fn recovery_download(
609 476 : &self,
610 476 : wp: &mut walproposer::bindings::WalProposer,
611 476 : sk: &mut walproposer::bindings::Safekeeper,
612 476 : ) -> bool {
613 476 : let mut startpos = wp.truncateLsn;
614 476 : let endpos = wp.propTermStartLsn;
615 476 :
616 476 : if startpos == endpos {
617 247 : debug!("recovery_download: nothing to download");
618 247 : return true;
619 229 : }
620 229 :
621 229 : debug!("recovery_download from {} to {}", startpos, endpos,);
622 :
623 229 : let replication_prompt = format!(
624 229 : "START_REPLICATION {} {} {} {}",
625 229 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
626 229 : );
627 229 : let async_conn = self.get_conn(sk);
628 229 :
629 229 : let conn = self.os.open_tcp(async_conn.node_id);
630 229 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
631 229 :
632 229 : let chan = conn.recv_chan();
633 369 : while startpos < endpos {
634 229 : let event = chan.recv();
635 219 : match event {
636 : NetEvent::Closed => {
637 10 : debug!("connection closed in recovery");
638 10 : break;
639 : }
640 140 : NetEvent::Message(AnyMessage::Bytes(b)) => {
641 140 : debug!("got recovery bytes from safekeeper");
642 140 : self.disk.lock().write(startpos, &b);
643 140 : startpos += b.len() as u64;
644 : }
645 79 : NetEvent::Message(_) => unreachable!(),
646 : }
647 : }
648 :
649 150 : debug!("recovery finished at {}", startpos);
650 :
651 150 : startpos == endpos
652 397 : }
653 :
654 11580 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
655 11580 : let mut conn = self.get_conn(sk);
656 11580 : debug!("conn_finish to {}", conn.node_id);
657 11580 : if let Some(socket) = conn.socket.as_mut() {
658 3570 : socket.close();
659 8010 : } else {
660 8010 : // connection is already closed
661 8010 : }
662 11580 : conn.socket = None;
663 11580 : }
664 :
665 11307 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
666 11307 : "connection is closed, probably".into()
667 11307 : }
668 : }
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