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 : pg_atomic_uint64, NeonWALReadResult, PageserverFeedback, SafekeeperStateDesiredEvents,
21 : WL_SOCKET_READABLE, WL_SOCKET_WRITEABLE,
22 : },
23 : walproposer::{ApiImpl, Config},
24 : };
25 :
26 : use super::walproposer_disk::DiskWalProposer;
27 :
28 : /// Special state for each wp->sk connection.
29 : struct SafekeeperConn {
30 : host: String,
31 : port: String,
32 : node_id: NodeId,
33 : // socket is Some(..) equals to connection is established
34 : socket: Option<TCP>,
35 : // connection is in progress
36 : is_connecting: bool,
37 : // START_WAL_PUSH is in progress
38 : is_start_wal_push: bool,
39 : // pointer to Safekeeper in walproposer for callbacks
40 : raw_ptr: *mut walproposer::bindings::Safekeeper,
41 : }
42 :
43 : impl SafekeeperConn {
44 219426 : pub fn new(host: String, port: String) -> Self {
45 219426 : // port number is the same as NodeId
46 219426 : let port_num = port.parse::<u32>().unwrap();
47 219426 : Self {
48 219426 : host,
49 219426 : port,
50 219426 : node_id: port_num,
51 219426 : socket: None,
52 219426 : is_connecting: false,
53 219426 : is_start_wal_push: false,
54 219426 : raw_ptr: std::ptr::null_mut(),
55 219426 : }
56 219426 : }
57 : }
58 :
59 : /// Simulation version of a postgres WaitEventSet. At pos 0 there is always
60 : /// a special NodeEvents channel, which is used as a latch.
61 : struct EventSet {
62 : os: NodeOs,
63 : // all pollable channels, 0 is always NodeEvent channel
64 : chans: Vec<Box<dyn PollSome>>,
65 : // 0 is always nullptr
66 : sk_ptrs: Vec<*mut walproposer::bindings::Safekeeper>,
67 : // event mask for each channel
68 : masks: Vec<u32>,
69 : }
70 :
71 : impl EventSet {
72 73142 : pub fn new(os: NodeOs) -> Self {
73 73142 : let node_events = os.node_events();
74 73142 : Self {
75 73142 : os,
76 73142 : chans: vec![Box::new(node_events)],
77 73142 : sk_ptrs: vec![std::ptr::null_mut()],
78 73142 : masks: vec![WL_SOCKET_READABLE],
79 73142 : }
80 73142 : }
81 :
82 : /// Leaves all readable channels at the beginning of the array.
83 218030 : fn sort_readable(&mut self) -> usize {
84 218030 : let mut cnt = 1;
85 513080 : for i in 1..self.chans.len() {
86 513080 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
87 513080 : self.chans.swap(i, cnt);
88 513080 : self.sk_ptrs.swap(i, cnt);
89 513080 : self.masks.swap(i, cnt);
90 513080 : cnt += 1;
91 513080 : }
92 : }
93 218030 : cnt
94 218030 : }
95 :
96 533911 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
97 533911 : let index = self
98 533911 : .sk_ptrs
99 533911 : .iter()
100 2017446 : .position(|&ptr| ptr == conn.raw_ptr)
101 533911 : .expect("safekeeper should exist in event set");
102 533911 : self.masks[index] = event_mask;
103 533911 : }
104 :
105 485600 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
106 1174788 : for ptr in self.sk_ptrs.iter() {
107 1174788 : assert!(*ptr != sk.raw_ptr);
108 : }
109 :
110 485600 : self.chans.push(Box::new(
111 485600 : sk.socket
112 485600 : .as_ref()
113 485600 : .expect("socket should not be closed")
114 485600 : .recv_chan(),
115 485600 : ));
116 485600 : self.sk_ptrs.push(sk.raw_ptr);
117 485600 : self.masks.push(event_mask);
118 485600 : }
119 :
120 306963 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
121 652592 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
122 306963 : if index.is_none() {
123 41 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
124 41 : return;
125 306922 : }
126 306922 : let index = index.unwrap();
127 306922 :
128 306922 : self.chans.remove(index);
129 306922 : self.sk_ptrs.remove(index);
130 306922 : self.masks.remove(index);
131 306922 :
132 306922 : // to simulate the actual behaviour
133 306922 : self.refresh_event_set();
134 306963 : }
135 :
136 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
137 342053 : fn refresh_event_set(&mut self) {
138 958933 : for (i, mask) in self.masks.iter_mut().enumerate() {
139 958933 : if i == 0 {
140 342053 : continue;
141 616880 : }
142 616880 :
143 616880 : let mut mask_sk: u32 = 0;
144 616880 : let mut mask_nwr: u32 = 0;
145 616880 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
146 616880 :
147 616880 : if mask_sk != *mask {
148 0 : debug!(
149 0 : "refresh_event_set: sk={:?}, old_mask={:#b}, new_mask={:#b}",
150 0 : self.sk_ptrs[i], *mask, mask_sk
151 0 : );
152 0 : *mask = mask_sk;
153 616880 : }
154 : }
155 342053 : }
156 :
157 : /// Wait for events on all channels.
158 218030 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
159 : // all channels are always writeable
160 731110 : for (i, mask) in self.masks.iter().enumerate() {
161 731110 : if *mask & WL_SOCKET_WRITEABLE != 0 {
162 0 : return walproposer::walproposer::WaitResult::Network(
163 0 : self.sk_ptrs[i],
164 0 : WL_SOCKET_WRITEABLE,
165 0 : );
166 731110 : }
167 : }
168 :
169 218030 : let cnt = self.sort_readable();
170 218030 :
171 218030 : let slice = &self.chans[0..cnt];
172 218030 : match executor::epoll_chans(slice, timeout_millis) {
173 91480 : None => walproposer::walproposer::WaitResult::Timeout,
174 : Some(0) => {
175 2852 : let msg = self.os.node_events().must_recv();
176 2852 : match msg {
177 2852 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
178 2852 : // got a notification about new WAL available
179 2852 : }
180 0 : NodeEvent::Internal(_) => unreachable!(),
181 0 : NodeEvent::Accept(_) => unreachable!(),
182 : }
183 2852 : walproposer::walproposer::WaitResult::Latch
184 : }
185 123698 : Some(index) => walproposer::walproposer::WaitResult::Network(
186 123698 : self.sk_ptrs[index],
187 123698 : WL_SOCKET_READABLE,
188 123698 : ),
189 : }
190 218030 : }
191 : }
192 :
193 : /// This struct handles all calls from walproposer into walproposer_api.
194 : pub struct SimulationApi {
195 : os: NodeOs,
196 : safekeepers: RefCell<Vec<SafekeeperConn>>,
197 : disk: Arc<DiskWalProposer>,
198 : redo_start_lsn: Option<Lsn>,
199 : last_logged_commit_lsn: u64,
200 : shmem: UnsafeCell<walproposer::bindings::WalproposerShmemState>,
201 : config: Config,
202 : event_set: RefCell<Option<EventSet>>,
203 : }
204 :
205 : pub struct Args {
206 : pub os: NodeOs,
207 : pub config: Config,
208 : pub disk: Arc<DiskWalProposer>,
209 : pub redo_start_lsn: Option<Lsn>,
210 : }
211 :
212 : impl SimulationApi {
213 73142 : pub fn new(args: Args) -> Self {
214 73142 : // initialize connection state for each safekeeper
215 73142 : let sk_conns = args
216 73142 : .config
217 73142 : .safekeepers_list
218 73142 : .iter()
219 219426 : .map(|s| {
220 219426 : SafekeeperConn::new(
221 219426 : s.split(':').next().unwrap().to_string(),
222 219426 : s.split(':').nth(1).unwrap().to_string(),
223 219426 : )
224 219426 : })
225 73142 : .collect::<Vec<_>>();
226 73142 :
227 73142 : let empty_feedback = PageserverFeedback {
228 73142 : present: false,
229 73142 : currentClusterSize: 0,
230 73142 : last_received_lsn: 0,
231 73142 : disk_consistent_lsn: 0,
232 73142 : remote_consistent_lsn: 0,
233 73142 : replytime: 0,
234 73142 : shard_number: 0,
235 73142 : };
236 73142 :
237 73142 : Self {
238 73142 : os: args.os,
239 73142 : safekeepers: RefCell::new(sk_conns),
240 73142 : disk: args.disk,
241 73142 : redo_start_lsn: args.redo_start_lsn,
242 73142 : last_logged_commit_lsn: 0,
243 73142 : shmem: UnsafeCell::new(walproposer::bindings::WalproposerShmemState {
244 73142 : mutex: 0,
245 73142 : mineLastElectedTerm: 0,
246 73142 : backpressureThrottlingTime: pg_atomic_uint64 { value: 0 },
247 73142 : currentClusterSize: pg_atomic_uint64 { value: 0 },
248 73142 : shard_ps_feedback: [empty_feedback; 128],
249 73142 : num_shards: 0,
250 73142 : min_ps_feedback: empty_feedback,
251 73142 : }),
252 73142 : config: args.config,
253 73142 : event_set: RefCell::new(None),
254 73142 : }
255 73142 : }
256 :
257 : /// Get SafekeeperConn for the given Safekeeper.
258 2367248 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
259 2367248 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
260 2367248 : let state = self.safekeepers.borrow_mut();
261 2367248 : RefMut::map(state, |v| {
262 2367248 : v.iter_mut()
263 4730747 : .find(|conn| conn.port == sk_port)
264 2367248 : .expect("safekeeper conn not found by port")
265 2367248 : })
266 2367248 : }
267 : }
268 :
269 : impl ApiImpl for SimulationApi {
270 2523782 : fn get_current_timestamp(&self) -> i64 {
271 2523782 : debug!("get_current_timestamp");
272 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
273 : // milliseconds, so add 10^3
274 2523782 : self.os.now() as i64 * 1000
275 2523782 : }
276 :
277 269854 : fn conn_status(
278 269854 : &self,
279 269854 : _: &mut walproposer::bindings::Safekeeper,
280 269854 : ) -> walproposer::bindings::WalProposerConnStatusType {
281 269854 : debug!("conn_status");
282 : // break the connection with a 10% chance
283 269854 : if self.os.random(100) < 10 {
284 27054 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
285 : } else {
286 242800 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
287 : }
288 269854 : }
289 :
290 269854 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
291 269854 : debug!("conn_connect_start");
292 269854 : let mut conn = self.get_conn(sk);
293 269854 :
294 269854 : assert!(conn.socket.is_none());
295 269854 : let socket = self.os.open_tcp(conn.node_id);
296 269854 : conn.socket = Some(socket);
297 269854 : conn.raw_ptr = sk;
298 269854 : conn.is_connecting = true;
299 269854 : }
300 :
301 242800 : fn conn_connect_poll(
302 242800 : &self,
303 242800 : _: &mut walproposer::bindings::Safekeeper,
304 242800 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
305 242800 : debug!("conn_connect_poll");
306 : // TODO: break the connection here
307 242800 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
308 242800 : }
309 :
310 242800 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
311 242800 : debug!("conn_send_query: {}", query);
312 242800 : self.get_conn(sk).is_start_wal_push = true;
313 242800 : true
314 242800 : }
315 :
316 242800 : fn conn_get_query_result(
317 242800 : &self,
318 242800 : _: &mut walproposer::bindings::Safekeeper,
319 242800 : ) -> walproposer::bindings::WalProposerExecStatusType {
320 242800 : debug!("conn_get_query_result");
321 : // TODO: break the connection here
322 242800 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
323 242800 : }
324 :
325 133267 : fn conn_async_read(
326 133267 : &self,
327 133267 : sk: &mut walproposer::bindings::Safekeeper,
328 133267 : vec: &mut Vec<u8>,
329 133267 : ) -> walproposer::bindings::PGAsyncReadResult {
330 133267 : debug!("conn_async_read");
331 133267 : let mut conn = self.get_conn(sk);
332 :
333 133267 : let socket = if let Some(socket) = conn.socket.as_mut() {
334 133267 : socket
335 : } else {
336 : // socket is already closed
337 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
338 : };
339 :
340 133267 : let msg = socket.recv_chan().try_recv();
341 :
342 121987 : match msg {
343 : None => {
344 : // no message is ready
345 11280 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
346 : }
347 : Some(NetEvent::Closed) => {
348 : // connection is closed
349 61960 : debug!("conn_async_read: connection is closed");
350 61960 : conn.socket = None;
351 61960 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
352 : }
353 60027 : Some(NetEvent::Message(msg)) => {
354 : // got a message
355 60027 : let b = match msg {
356 60027 : desim::proto::AnyMessage::Bytes(b) => b,
357 0 : _ => unreachable!(),
358 : };
359 60027 : vec.extend_from_slice(&b);
360 60027 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
361 : }
362 : }
363 133267 : }
364 :
365 270676 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
366 270676 : let mut conn = self.get_conn(sk);
367 270676 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
368 270676 : let socket = conn.socket.as_mut().unwrap();
369 270676 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
370 270676 : true
371 270676 : }
372 :
373 30872 : fn conn_async_write(
374 30872 : &self,
375 30872 : sk: &mut walproposer::bindings::Safekeeper,
376 30872 : buf: &[u8],
377 30872 : ) -> walproposer::bindings::PGAsyncWriteResult {
378 30872 : let mut conn = self.get_conn(sk);
379 30872 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
380 30872 : if let Some(socket) = conn.socket.as_mut() {
381 30872 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
382 30872 : } else {
383 : // connection is already closed
384 0 : debug!("conn_async_write: writing to a closed socket!");
385 : // TODO: maybe we should return error here?
386 : }
387 30872 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
388 30872 : }
389 :
390 7021 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
391 7021 : debug!("wal_reader_allocate");
392 7021 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
393 7021 : }
394 :
395 23851 : fn wal_read(
396 23851 : &self,
397 23851 : _sk: &mut walproposer::bindings::Safekeeper,
398 23851 : buf: &mut [u8],
399 23851 : startpos: u64,
400 23851 : ) -> NeonWALReadResult {
401 23851 : self.disk.lock().read(startpos, buf);
402 23851 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
403 23851 : }
404 :
405 73142 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
406 73142 : debug!("init_event_set");
407 73142 : let new_event_set = EventSet::new(self.os.clone());
408 73142 : let old_event_set = self.event_set.replace(Some(new_event_set));
409 73142 : assert!(old_event_set.is_none());
410 73142 : }
411 :
412 533911 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
413 533911 : debug!(
414 1166 : "update_event_set, sk={:?}, events_mask={:#b}",
415 1166 : sk as *mut walproposer::bindings::Safekeeper, event_mask
416 1166 : );
417 533911 : let conn = self.get_conn(sk);
418 533911 :
419 533911 : self.event_set
420 533911 : .borrow_mut()
421 533911 : .as_mut()
422 533911 : .unwrap()
423 533911 : .update_event_set(&conn, event_mask);
424 533911 : }
425 :
426 485600 : fn add_safekeeper_event_set(
427 485600 : &self,
428 485600 : sk: &mut walproposer::bindings::Safekeeper,
429 485600 : event_mask: u32,
430 485600 : ) {
431 485600 : debug!(
432 728 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
433 728 : sk as *mut walproposer::bindings::Safekeeper, event_mask
434 728 : );
435 :
436 485600 : self.event_set
437 485600 : .borrow_mut()
438 485600 : .as_mut()
439 485600 : .unwrap()
440 485600 : .add_safekeeper(&self.get_conn(sk), event_mask);
441 485600 : }
442 :
443 306963 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
444 306963 : debug!(
445 400 : "rm_safekeeper_event_set, sk={:?}",
446 400 : sk as *mut walproposer::bindings::Safekeeper,
447 400 : );
448 :
449 306963 : self.event_set
450 306963 : .borrow_mut()
451 306963 : .as_mut()
452 306963 : .unwrap()
453 306963 : .remove_safekeeper(&self.get_conn(sk));
454 306963 : }
455 :
456 35131 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
457 35131 : debug!("active_state_update_event_set");
458 :
459 35131 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
460 35131 : self.event_set
461 35131 : .borrow_mut()
462 35131 : .as_mut()
463 35131 : .unwrap()
464 35131 : .refresh_event_set();
465 35131 : }
466 :
467 99168 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
468 99168 : 0
469 99168 : }
470 :
471 703630 : fn wait_event_set(
472 703630 : &self,
473 703630 : _: &mut walproposer::bindings::WalProposer,
474 703630 : timeout_millis: i64,
475 703630 : ) -> walproposer::walproposer::WaitResult {
476 703630 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
477 703630 : let mut conns = self.safekeepers.borrow_mut();
478 1625158 : for conn in conns.iter_mut() {
479 1625158 : if conn.socket.is_some() && conn.is_connecting {
480 242800 : conn.is_connecting = false;
481 242800 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
482 242800 : return walproposer::walproposer::WaitResult::Network(
483 242800 : conn.raw_ptr,
484 242800 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
485 242800 : );
486 1382358 : }
487 1382358 : if conn.socket.is_some() && conn.is_start_wal_push {
488 242800 : conn.is_start_wal_push = false;
489 242800 : debug!(
490 364 : "wait_event_set, start wal push to {}:{}",
491 364 : conn.host, conn.port
492 364 : );
493 242800 : return walproposer::walproposer::WaitResult::Network(
494 242800 : conn.raw_ptr,
495 242800 : WL_SOCKET_READABLE,
496 242800 : );
497 1139558 : }
498 : }
499 218030 : drop(conns);
500 218030 :
501 218030 : let res = self
502 218030 : .event_set
503 218030 : .borrow_mut()
504 218030 : .as_mut()
505 218030 : .unwrap()
506 218030 : .wait(timeout_millis);
507 218030 :
508 218030 : debug!(
509 690 : "wait_event_set, timeout_millis={}, res={:?}",
510 690 : timeout_millis, res,
511 690 : );
512 148625 : res
513 634225 : }
514 :
515 73142 : fn strong_random(&self, buf: &mut [u8]) -> bool {
516 73142 : debug!("strong_random");
517 73142 : buf.fill(0);
518 73142 : true
519 73142 : }
520 :
521 2663 : fn finish_sync_safekeepers(&self, lsn: u64) {
522 2663 : debug!("finish_sync_safekeepers, lsn={}", lsn);
523 2663 : executor::exit(0, Lsn(lsn).to_string());
524 2663 : }
525 :
526 713869 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
527 713869 : debug!("wp_log[{}] {}", level, msg);
528 713869 : if level == Level::Fatal || level == Level::Panic {
529 546 : if msg.contains("rejects our connection request with term") {
530 310 : // collected quorum with lower term, then got rejected by next connected safekeeper
531 310 : executor::exit(1, msg.to_owned());
532 310 : }
533 546 : if msg.contains("collected propEpochStartLsn") && msg.contains(", but basebackup LSN ")
534 19 : {
535 19 : // sync-safekeepers collected wrong quorum, walproposer collected another quorum
536 19 : executor::exit(1, msg.to_owned());
537 527 : }
538 546 : if msg.contains("failed to download WAL for logical replicaiton") {
539 142 : // Recovery connection broken and recovery was failed
540 142 : executor::exit(1, msg.to_owned());
541 404 : }
542 546 : if msg.contains("missing majority of votes, collected") {
543 75 : // Voting bug when safekeeper disconnects after voting
544 75 : executor::exit(1, msg.to_owned());
545 471 : }
546 546 : panic!("unknown FATAL error from walproposer: {}", msg);
547 713323 : }
548 713323 : }
549 :
550 5410 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
551 5410 : let prop_lsn = wp.propEpochStartLsn;
552 5410 : let prop_term = wp.propTerm;
553 5410 :
554 5410 : let mut prev_lsn: u64 = 0;
555 5410 : let mut prev_term: u64 = 0;
556 5410 :
557 5410 : unsafe {
558 5410 : let history = wp.propTermHistory.entries;
559 5410 : let len = wp.propTermHistory.n_entries as usize;
560 5410 : if len > 1 {
561 3511 : let entry = *history.wrapping_add(len - 2);
562 3511 : prev_lsn = entry.lsn;
563 3511 : prev_term = entry.term;
564 3511 : }
565 : }
566 :
567 5410 : let msg = format!(
568 5410 : "prop_elected;{};{};{};{}",
569 5410 : prop_lsn, prop_term, prev_lsn, prev_term
570 5410 : );
571 5410 :
572 5410 : debug!(msg);
573 5410 : self.os.log_event(msg);
574 5410 : }
575 :
576 1994 : fn get_redo_start_lsn(&self) -> u64 {
577 1994 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
578 1994 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
579 1994 : }
580 :
581 1162 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
582 1162 : self.shmem.get()
583 1162 : }
584 :
585 1121 : fn start_streaming(
586 1121 : &self,
587 1121 : startpos: u64,
588 1121 : callback: &walproposer::walproposer::StreamingCallback,
589 1121 : ) {
590 1121 : let disk = &self.disk;
591 1121 : let disk_lsn = disk.lock().flush_rec_ptr().0;
592 1121 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
593 1121 : if startpos < disk_lsn {
594 322 : debug!("startpos < disk_lsn, it means we wrote some transaction even before streaming started");
595 799 : }
596 1121 : assert!(startpos <= disk_lsn);
597 1121 : let mut broadcasted = Lsn(startpos);
598 :
599 : loop {
600 3774 : let available = disk.lock().flush_rec_ptr();
601 3774 : assert!(available >= broadcasted);
602 2653 : callback.broadcast(broadcasted, available);
603 2653 : broadcasted = available;
604 2653 : callback.poll();
605 : }
606 : }
607 :
608 12151 : fn process_safekeeper_feedback(
609 12151 : &mut self,
610 12151 : wp: &mut walproposer::bindings::WalProposer,
611 12151 : _sk: &mut walproposer::bindings::Safekeeper,
612 12151 : ) {
613 12151 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
614 12151 : if wp.commitLsn > self.last_logged_commit_lsn {
615 2593 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
616 2593 : self.last_logged_commit_lsn = wp.commitLsn;
617 9558 : }
618 12151 : }
619 :
620 809 : fn get_flush_rec_ptr(&self) -> u64 {
621 809 : let lsn = self.disk.lock().flush_rec_ptr();
622 809 : debug!("get_flush_rec_ptr: {}", lsn);
623 809 : lsn.0
624 809 : }
625 :
626 5410 : fn recovery_download(
627 5410 : &self,
628 5410 : wp: &mut walproposer::bindings::WalProposer,
629 5410 : sk: &mut walproposer::bindings::Safekeeper,
630 5410 : ) -> bool {
631 5410 : let mut startpos = wp.truncateLsn;
632 5410 : let endpos = wp.propEpochStartLsn;
633 5410 :
634 5410 : if startpos == endpos {
635 3322 : debug!("recovery_download: nothing to download");
636 3322 : return true;
637 2088 : }
638 2088 :
639 2088 : debug!("recovery_download from {} to {}", startpos, endpos,);
640 :
641 2088 : let replication_prompt = format!(
642 2088 : "START_REPLICATION {} {} {} {}",
643 2088 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
644 2088 : );
645 2088 : let async_conn = self.get_conn(sk);
646 2088 :
647 2088 : let conn = self.os.open_tcp(async_conn.node_id);
648 2088 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
649 2088 :
650 2088 : let chan = conn.recv_chan();
651 3506 : while startpos < endpos {
652 2088 : let event = chan.recv();
653 1946 : match event {
654 : NetEvent::Closed => {
655 142 : debug!("connection closed in recovery");
656 142 : break;
657 : }
658 1946 : NetEvent::Message(AnyMessage::Bytes(b)) => {
659 1946 : debug!("got recovery bytes from safekeeper");
660 1418 : self.disk.lock().write(startpos, &b);
661 1418 : startpos += b.len() as u64;
662 : }
663 0 : NetEvent::Message(_) => unreachable!(),
664 : }
665 : }
666 :
667 1560 : debug!("recovery finished at {}", startpos);
668 :
669 1560 : startpos == endpos
670 4882 : }
671 :
672 91217 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
673 91217 : let mut conn = self.get_conn(sk);
674 91217 : debug!("conn_finish to {}", conn.node_id);
675 91217 : if let Some(socket) = conn.socket.as_mut() {
676 29216 : socket.close();
677 62001 : } else {
678 62001 : // connection is already closed
679 62001 : }
680 91217 : conn.socket = None;
681 91217 : }
682 :
683 89014 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
684 89014 : "connection is closed, probably".into()
685 89014 : }
686 : }
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