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 221133 : pub fn new(host: String, port: String) -> Self {
44 221133 : // port number is the same as NodeId
45 221133 : let port_num = port.parse::<u32>().unwrap();
46 221133 : Self {
47 221133 : host,
48 221133 : port,
49 221133 : node_id: port_num,
50 221133 : socket: None,
51 221133 : is_connecting: false,
52 221133 : is_start_wal_push: false,
53 221133 : raw_ptr: std::ptr::null_mut(),
54 221133 : }
55 221133 : }
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 73711 : pub fn new(os: NodeOs) -> Self {
72 73711 : let node_events = os.node_events();
73 73711 : Self {
74 73711 : os,
75 73711 : chans: vec![Box::new(node_events)],
76 73711 : sk_ptrs: vec![std::ptr::null_mut()],
77 73711 : masks: vec![WL_SOCKET_READABLE],
78 73711 : }
79 73711 : }
80 :
81 : /// Leaves all readable channels at the beginning of the array.
82 230556 : fn sort_readable(&mut self) -> usize {
83 230556 : let mut cnt = 1;
84 548900 : for i in 1..self.chans.len() {
85 548900 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
86 548900 : self.chans.swap(i, cnt);
87 548900 : self.sk_ptrs.swap(i, cnt);
88 548900 : self.masks.swap(i, cnt);
89 548900 : cnt += 1;
90 548900 : }
91 : }
92 230556 : cnt
93 230556 : }
94 :
95 546090 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
96 546090 : let index = self
97 546090 : .sk_ptrs
98 546090 : .iter()
99 2056692 : .position(|&ptr| ptr == conn.raw_ptr)
100 546090 : .expect("safekeeper should exist in event set");
101 546090 : self.masks[index] = event_mask;
102 546090 : }
103 :
104 490096 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
105 1185157 : for ptr in self.sk_ptrs.iter() {
106 1185157 : assert!(*ptr != sk.raw_ptr);
107 : }
108 :
109 490096 : self.chans.push(Box::new(
110 490096 : sk.socket
111 490096 : .as_ref()
112 490096 : .expect("socket should not be closed")
113 490096 : .recv_chan(),
114 490096 : ));
115 490096 : self.sk_ptrs.push(sk.raw_ptr);
116 490096 : self.masks.push(event_mask);
117 490096 : }
118 :
119 309586 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
120 658434 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
121 309586 : if index.is_none() {
122 57 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
123 57 : return;
124 309529 : }
125 309529 : let index = index.unwrap();
126 309529 :
127 309529 : self.chans.remove(index);
128 309529 : self.sk_ptrs.remove(index);
129 309529 : self.masks.remove(index);
130 309529 :
131 309529 : // to simulate the actual behaviour
132 309529 : self.refresh_event_set();
133 309586 : }
134 :
135 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
136 355157 : fn refresh_event_set(&mut self) {
137 1007363 : for (i, mask) in self.masks.iter_mut().enumerate() {
138 1007363 : if i == 0 {
139 355157 : continue;
140 652206 : }
141 652206 :
142 652206 : let mut mask_sk: u32 = 0;
143 652206 : let mut mask_nwr: u32 = 0;
144 652206 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
145 652206 :
146 652206 : 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 652206 : }
153 : }
154 355157 : }
155 :
156 : /// Wait for events on all channels.
157 230556 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
158 : // all channels are always writeable
159 779456 : for (i, mask) in self.masks.iter().enumerate() {
160 779456 : 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 779456 : }
166 : }
167 :
168 230556 : let cnt = self.sort_readable();
169 230556 :
170 230556 : let slice = &self.chans[0..cnt];
171 230556 : match executor::epoll_chans(slice, timeout_millis) {
172 91312 : None => walproposer::walproposer::WaitResult::Timeout,
173 : Some(0) => {
174 3295 : let msg = self.os.node_events().must_recv();
175 3295 : match msg {
176 3295 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
177 3295 : // got a notification about new WAL available
178 3295 : }
179 0 : NodeEvent::Internal(_) => unreachable!(),
180 0 : NodeEvent::Accept(_) => unreachable!(),
181 : }
182 3295 : walproposer::walproposer::WaitResult::Latch
183 : }
184 135949 : Some(index) => walproposer::walproposer::WaitResult::Network(
185 135949 : self.sk_ptrs[index],
186 135949 : WL_SOCKET_READABLE,
187 135949 : ),
188 : }
189 230556 : }
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 73711 : pub fn new(args: Args) -> Self {
213 73711 : // initialize connection state for each safekeeper
214 73711 : let sk_conns = args
215 73711 : .config
216 73711 : .safekeepers_list
217 73711 : .iter()
218 221133 : .map(|s| {
219 221133 : SafekeeperConn::new(
220 221133 : s.split(':').next().unwrap().to_string(),
221 221133 : s.split(':').nth(1).unwrap().to_string(),
222 221133 : )
223 221133 : })
224 73711 : .collect::<Vec<_>>();
225 73711 :
226 73711 : Self {
227 73711 : os: args.os,
228 73711 : safekeepers: RefCell::new(sk_conns),
229 73711 : disk: args.disk,
230 73711 : redo_start_lsn: args.redo_start_lsn,
231 73711 : last_logged_commit_lsn: 0,
232 73711 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
233 73711 : config: args.config,
234 73711 : event_set: RefCell::new(None),
235 73711 : }
236 73711 : }
237 :
238 : /// Get SafekeeperConn for the given Safekeeper.
239 2423633 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
240 2423633 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
241 2423633 : let state = self.safekeepers.borrow_mut();
242 2423633 : RefMut::map(state, |v| {
243 2423633 : v.iter_mut()
244 4842502 : .find(|conn| conn.port == sk_port)
245 2423633 : .expect("safekeeper conn not found by port")
246 2423633 : })
247 2423633 : }
248 : }
249 :
250 : impl ApiImpl for SimulationApi {
251 2588376 : fn get_current_timestamp(&self) -> i64 {
252 2588376 : debug!("get_current_timestamp");
253 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
254 : // milliseconds, so add 10^3
255 2588376 : self.os.now() as i64 * 1000
256 2588376 : }
257 :
258 8650 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
259 8650 : let mut shmem = unsafe { *self.get_shmem_state() };
260 8650 : shmem.propEpochStartLsn.value = donor_lsn;
261 8650 : shmem.donor_conninfo = donor.conninfo;
262 8650 : }
263 :
264 272166 : fn conn_status(
265 272166 : &self,
266 272166 : _: &mut walproposer::bindings::Safekeeper,
267 272166 : ) -> walproposer::bindings::WalProposerConnStatusType {
268 272166 : debug!("conn_status");
269 : // break the connection with a 10% chance
270 272166 : if self.os.random(100) < 10 {
271 27118 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
272 : } else {
273 245048 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
274 : }
275 272166 : }
276 :
277 272166 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
278 272166 : debug!("conn_connect_start");
279 272166 : let mut conn = self.get_conn(sk);
280 272166 :
281 272166 : assert!(conn.socket.is_none());
282 272166 : let socket = self.os.open_tcp(conn.node_id);
283 272166 : conn.socket = Some(socket);
284 272166 : conn.raw_ptr = sk;
285 272166 : conn.is_connecting = true;
286 272166 : }
287 :
288 245048 : fn conn_connect_poll(
289 245048 : &self,
290 245048 : _: &mut walproposer::bindings::Safekeeper,
291 245048 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
292 245048 : debug!("conn_connect_poll");
293 : // TODO: break the connection here
294 245048 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
295 245048 : }
296 :
297 245048 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
298 245048 : debug!("conn_send_query: {}", query);
299 245048 : self.get_conn(sk).is_start_wal_push = true;
300 245048 : true
301 245048 : }
302 :
303 245048 : fn conn_get_query_result(
304 245048 : &self,
305 245048 : _: &mut walproposer::bindings::Safekeeper,
306 245048 : ) -> walproposer::bindings::WalProposerExecStatusType {
307 245048 : debug!("conn_get_query_result");
308 : // TODO: break the connection here
309 245048 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
310 245048 : }
311 :
312 149008 : fn conn_async_read(
313 149008 : &self,
314 149008 : sk: &mut walproposer::bindings::Safekeeper,
315 149008 : vec: &mut Vec<u8>,
316 149008 : ) -> walproposer::bindings::PGAsyncReadResult {
317 149008 : debug!("conn_async_read");
318 149008 : let mut conn = self.get_conn(sk);
319 :
320 149008 : let socket = if let Some(socket) = conn.socket.as_mut() {
321 149008 : socket
322 : } else {
323 : // socket is already closed
324 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
325 : };
326 :
327 149008 : let msg = socket.recv_chan().try_recv();
328 :
329 134135 : match msg {
330 : None => {
331 : // no message is ready
332 14873 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
333 : }
334 : Some(NetEvent::Closed) => {
335 : // connection is closed
336 62101 : debug!("conn_async_read: connection is closed");
337 62101 : conn.socket = None;
338 62101 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
339 : }
340 72034 : Some(NetEvent::Message(msg)) => {
341 : // got a message
342 72034 : let b = match msg {
343 72034 : desim::proto::AnyMessage::Bytes(b) => b,
344 0 : _ => unreachable!(),
345 : };
346 72034 : vec.extend_from_slice(&b);
347 72034 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
348 : }
349 : }
350 149008 : }
351 :
352 277588 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
353 277588 : let mut conn = self.get_conn(sk);
354 277588 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
355 277588 : let socket = conn.socket.as_mut().unwrap();
356 277588 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
357 277588 : true
358 277588 : }
359 :
360 39834 : fn conn_async_write(
361 39834 : &self,
362 39834 : sk: &mut walproposer::bindings::Safekeeper,
363 39834 : buf: &[u8],
364 39834 : ) -> walproposer::bindings::PGAsyncWriteResult {
365 39834 : let mut conn = self.get_conn(sk);
366 39834 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
367 39834 : if let Some(socket) = conn.socket.as_mut() {
368 39834 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
369 39834 : } 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 39834 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
375 39834 : }
376 :
377 9079 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
378 9079 : debug!("wal_reader_allocate");
379 9079 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
380 9079 : }
381 :
382 30755 : fn wal_read(
383 30755 : &self,
384 30755 : _sk: &mut walproposer::bindings::Safekeeper,
385 30755 : buf: &mut [u8],
386 30755 : startpos: u64,
387 30755 : ) -> NeonWALReadResult {
388 30755 : self.disk.lock().read(startpos, buf);
389 30755 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
390 30755 : }
391 :
392 73711 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
393 73711 : debug!("init_event_set");
394 73711 : let new_event_set = EventSet::new(self.os.clone());
395 73711 : let old_event_set = self.event_set.replace(Some(new_event_set));
396 73711 : assert!(old_event_set.is_none());
397 73711 : }
398 :
399 546090 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
400 546090 : debug!(
401 0 : "update_event_set, sk={:?}, events_mask={:#b}",
402 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
403 : );
404 546090 : let conn = self.get_conn(sk);
405 546090 :
406 546090 : self.event_set
407 546090 : .borrow_mut()
408 546090 : .as_mut()
409 546090 : .unwrap()
410 546090 : .update_event_set(&conn, event_mask);
411 546090 : }
412 :
413 490096 : fn add_safekeeper_event_set(
414 490096 : &self,
415 490096 : sk: &mut walproposer::bindings::Safekeeper,
416 490096 : event_mask: u32,
417 490096 : ) {
418 490096 : debug!(
419 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
420 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
421 : );
422 :
423 490096 : self.event_set
424 490096 : .borrow_mut()
425 490096 : .as_mut()
426 490096 : .unwrap()
427 490096 : .add_safekeeper(&self.get_conn(sk), event_mask);
428 490096 : }
429 :
430 309586 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
431 309586 : debug!(
432 0 : "rm_safekeeper_event_set, sk={:?}",
433 0 : sk as *mut walproposer::bindings::Safekeeper,
434 : );
435 :
436 309586 : self.event_set
437 309586 : .borrow_mut()
438 309586 : .as_mut()
439 309586 : .unwrap()
440 309586 : .remove_safekeeper(&self.get_conn(sk));
441 309586 : }
442 :
443 45628 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
444 45628 : debug!("active_state_update_event_set");
445 :
446 45628 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
447 45628 : self.event_set
448 45628 : .borrow_mut()
449 45628 : .as_mut()
450 45628 : .unwrap()
451 45628 : .refresh_event_set();
452 45628 : }
453 :
454 130178 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
455 130178 : 0
456 130178 : }
457 :
458 720652 : fn wait_event_set(
459 720652 : &self,
460 720652 : _: &mut walproposer::bindings::WalProposer,
461 720652 : timeout_millis: i64,
462 720652 : ) -> walproposer::walproposer::WaitResult {
463 720652 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
464 720652 : let mut conns = self.safekeepers.borrow_mut();
465 1671712 : for conn in conns.iter_mut() {
466 1671712 : if conn.socket.is_some() && conn.is_connecting {
467 245048 : conn.is_connecting = false;
468 245048 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
469 245048 : return walproposer::walproposer::WaitResult::Network(
470 245048 : conn.raw_ptr,
471 245048 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
472 245048 : );
473 1426664 : }
474 1426664 : if conn.socket.is_some() && conn.is_start_wal_push {
475 245048 : conn.is_start_wal_push = false;
476 245048 : debug!(
477 0 : "wait_event_set, start wal push to {}:{}",
478 : conn.host, conn.port
479 : );
480 245048 : return walproposer::walproposer::WaitResult::Network(
481 245048 : conn.raw_ptr,
482 245048 : WL_SOCKET_READABLE,
483 245048 : );
484 1181616 : }
485 : }
486 230556 : drop(conns);
487 230556 :
488 230556 : let res = self
489 230556 : .event_set
490 230556 : .borrow_mut()
491 230556 : .as_mut()
492 230556 : .unwrap()
493 230556 : .wait(timeout_millis);
494 230556 :
495 230556 : debug!(
496 0 : "wait_event_set, timeout_millis={}, res={:?}",
497 : timeout_millis, res,
498 : );
499 161314 : res
500 651410 : }
501 :
502 73711 : fn strong_random(&self, buf: &mut [u8]) -> bool {
503 73711 : debug!("strong_random");
504 73711 : buf.fill(0);
505 73711 : true
506 73711 : }
507 :
508 3217 : fn finish_sync_safekeepers(&self, lsn: u64) {
509 3217 : debug!("finish_sync_safekeepers, lsn={}", lsn);
510 3217 : executor::exit(0, Lsn(lsn).to_string());
511 3217 : }
512 :
513 748231 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
514 748231 : debug!("wp_log[{}] {}", level, msg);
515 748231 : if level == Level::Fatal || level == Level::Panic {
516 671 : if msg.contains("rejects our connection request with term") {
517 387 : // collected quorum with lower term, then got rejected by next connected safekeeper
518 387 : executor::exit(1, msg.to_owned());
519 387 : }
520 671 : if msg.contains("collected propEpochStartLsn") && msg.contains(", but basebackup LSN ")
521 22 : {
522 22 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
523 22 : executor::exit(1, msg.to_owned());
524 649 : }
525 671 : if msg.contains("failed to download WAL for logical replicaiton") {
526 174 : // Recovery connection broken and recovery was failed
527 174 : executor::exit(1, msg.to_owned());
528 497 : }
529 671 : if msg.contains("missing majority of votes, collected") {
530 88 : // Voting bug when safekeeper disconnects after voting
531 88 : executor::exit(1, msg.to_owned());
532 583 : }
533 671 : panic!("unknown FATAL error from walproposer: {}", msg);
534 747560 : }
535 747560 : }
536 :
537 6645 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
538 6645 : let prop_lsn = wp.propEpochStartLsn;
539 6645 : let prop_term = wp.propTerm;
540 6645 :
541 6645 : let mut prev_lsn: u64 = 0;
542 6645 : let mut prev_term: u64 = 0;
543 6645 :
544 6645 : unsafe {
545 6645 : let history = wp.propTermHistory.entries;
546 6645 : let len = wp.propTermHistory.n_entries as usize;
547 6645 : if len > 1 {
548 4572 : let entry = *history.wrapping_add(len - 2);
549 4572 : prev_lsn = entry.lsn;
550 4572 : prev_term = entry.term;
551 4572 : }
552 : }
553 :
554 6645 : let msg = format!(
555 6645 : "prop_elected;{};{};{};{}",
556 6645 : prop_lsn, prop_term, prev_lsn, prev_term
557 6645 : );
558 6645 :
559 6645 : debug!(msg);
560 6645 : self.os.log_event(msg);
561 6645 : }
562 :
563 2523 : fn get_redo_start_lsn(&self) -> u64 {
564 2523 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
565 2523 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
566 2523 : }
567 :
568 21984 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
569 21984 : self.shmem.get()
570 21984 : }
571 :
572 1530 : fn start_streaming(
573 1530 : &self,
574 1530 : startpos: u64,
575 1530 : callback: &walproposer::walproposer::StreamingCallback,
576 1530 : ) {
577 1530 : let disk = &self.disk;
578 1530 : let disk_lsn = disk.lock().flush_rec_ptr().0;
579 1530 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
580 1530 : if startpos < disk_lsn {
581 403 : debug!("startpos < disk_lsn, it means we wrote some transaction even before streaming started");
582 1127 : }
583 1530 : assert!(startpos <= disk_lsn);
584 1530 : let mut broadcasted = Lsn(startpos);
585 :
586 : loop {
587 4803 : let available = disk.lock().flush_rec_ptr();
588 4803 : assert!(available >= broadcasted);
589 3273 : callback.broadcast(broadcasted, available);
590 3273 : broadcasted = available;
591 3273 : callback.poll();
592 : }
593 : }
594 :
595 16038 : fn process_safekeeper_feedback(
596 16038 : &mut self,
597 16038 : wp: &mut walproposer::bindings::WalProposer,
598 16038 : _sk: &mut walproposer::bindings::Safekeeper,
599 16038 : ) {
600 16038 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
601 16038 : if wp.commitLsn > self.last_logged_commit_lsn {
602 3320 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
603 3320 : self.last_logged_commit_lsn = wp.commitLsn;
604 12718 : }
605 16038 : }
606 :
607 882 : fn get_flush_rec_ptr(&self) -> u64 {
608 882 : let lsn = self.disk.lock().flush_rec_ptr();
609 882 : debug!("get_flush_rec_ptr: {}", lsn);
610 882 : lsn.0
611 882 : }
612 :
613 6645 : fn recovery_download(
614 6645 : &self,
615 6645 : wp: &mut walproposer::bindings::WalProposer,
616 6645 : sk: &mut walproposer::bindings::Safekeeper,
617 6645 : ) -> bool {
618 6645 : let mut startpos = wp.truncateLsn;
619 6645 : let endpos = wp.propEpochStartLsn;
620 6645 :
621 6645 : if startpos == endpos {
622 4084 : debug!("recovery_download: nothing to download");
623 4084 : return true;
624 2561 : }
625 2561 :
626 2561 : debug!("recovery_download from {} to {}", startpos, endpos,);
627 :
628 2561 : let replication_prompt = format!(
629 2561 : "START_REPLICATION {} {} {} {}",
630 2561 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
631 2561 : );
632 2561 : let async_conn = self.get_conn(sk);
633 2561 :
634 2561 : let conn = self.os.open_tcp(async_conn.node_id);
635 2561 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
636 2561 :
637 2561 : let chan = conn.recv_chan();
638 4367 : while startpos < endpos {
639 2561 : let event = chan.recv();
640 2387 : match event {
641 : NetEvent::Closed => {
642 174 : debug!("connection closed in recovery");
643 174 : break;
644 : }
645 2387 : NetEvent::Message(AnyMessage::Bytes(b)) => {
646 2387 : debug!("got recovery bytes from safekeeper");
647 1806 : self.disk.lock().write(startpos, &b);
648 1806 : startpos += b.len() as u64;
649 : }
650 0 : NetEvent::Message(_) => unreachable!(),
651 : }
652 : }
653 :
654 1980 : debug!("recovery finished at {}", startpos);
655 :
656 1980 : startpos == endpos
657 6064 : }
658 :
659 91656 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
660 91656 : let mut conn = self.get_conn(sk);
661 91656 : debug!("conn_finish to {}", conn.node_id);
662 91656 : if let Some(socket) = conn.socket.as_mut() {
663 29498 : socket.close();
664 62158 : } else {
665 62158 : // connection is already closed
666 62158 : }
667 91656 : conn.socket = None;
668 91656 : }
669 :
670 89219 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
671 89219 : "connection is closed, probably".into()
672 89219 : }
673 : }
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