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 221082 : pub fn new(host: String, port: String) -> Self {
44 221082 : // port number is the same as NodeId
45 221082 : let port_num = port.parse::<u32>().unwrap();
46 221082 : Self {
47 221082 : host,
48 221082 : port,
49 221082 : node_id: port_num,
50 221082 : socket: None,
51 221082 : is_connecting: false,
52 221082 : is_start_wal_push: false,
53 221082 : raw_ptr: std::ptr::null_mut(),
54 221082 : }
55 221082 : }
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 73694 : pub fn new(os: NodeOs) -> Self {
72 73694 : let node_events = os.node_events();
73 73694 : Self {
74 73694 : os,
75 73694 : chans: vec![Box::new(node_events)],
76 73694 : sk_ptrs: vec![std::ptr::null_mut()],
77 73694 : masks: vec![WL_SOCKET_READABLE],
78 73694 : }
79 73694 : }
80 :
81 : /// Leaves all readable channels at the beginning of the array.
82 216448 : fn sort_readable(&mut self) -> usize {
83 216448 : let mut cnt = 1;
84 513932 : for i in 1..self.chans.len() {
85 513932 : if self.masks[i] & WL_SOCKET_READABLE != 0 {
86 513932 : self.chans.swap(i, cnt);
87 513932 : self.sk_ptrs.swap(i, cnt);
88 513932 : self.masks.swap(i, cnt);
89 513932 : cnt += 1;
90 513932 : }
91 : }
92 216448 : cnt
93 216448 : }
94 :
95 535410 : fn update_event_set(&mut self, conn: &SafekeeperConn, event_mask: u32) {
96 535410 : let index = self
97 535410 : .sk_ptrs
98 535410 : .iter()
99 2023082 : .position(|&ptr| ptr == conn.raw_ptr)
100 535410 : .expect("safekeeper should exist in event set");
101 535410 : self.masks[index] = event_mask;
102 535410 : }
103 :
104 486638 : fn add_safekeeper(&mut self, sk: &SafekeeperConn, event_mask: u32) {
105 1177484 : for ptr in self.sk_ptrs.iter() {
106 1177484 : assert!(*ptr != sk.raw_ptr);
107 : }
108 :
109 486638 : self.chans.push(Box::new(
110 486638 : sk.socket
111 486638 : .as_ref()
112 486638 : .expect("socket should not be closed")
113 486638 : .recv_chan(),
114 486638 : ));
115 486638 : self.sk_ptrs.push(sk.raw_ptr);
116 486638 : self.masks.push(event_mask);
117 486638 : }
118 :
119 304784 : fn remove_safekeeper(&mut self, sk: &SafekeeperConn) {
120 648471 : let index = self.sk_ptrs.iter().position(|&ptr| ptr == sk.raw_ptr);
121 304784 : if index.is_none() {
122 50 : debug!("remove_safekeeper: sk={:?} not found", sk.raw_ptr);
123 50 : return;
124 304734 : }
125 304734 : let index = index.unwrap();
126 304734 :
127 304734 : self.chans.remove(index);
128 304734 : self.sk_ptrs.remove(index);
129 304734 : self.masks.remove(index);
130 304734 :
131 304734 : // to simulate the actual behaviour
132 304734 : self.refresh_event_set();
133 304784 : }
134 :
135 : /// Updates all masks to match the result of a SafekeeperStateDesiredEvents.
136 340928 : fn refresh_event_set(&mut self) {
137 959145 : for (i, mask) in self.masks.iter_mut().enumerate() {
138 959145 : if i == 0 {
139 340928 : continue;
140 618217 : }
141 618217 :
142 618217 : let mut mask_sk: u32 = 0;
143 618217 : let mut mask_nwr: u32 = 0;
144 618217 : unsafe { SafekeeperStateDesiredEvents(self.sk_ptrs[i], &mut mask_sk, &mut mask_nwr) };
145 618217 :
146 618217 : 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 618217 : }
153 : }
154 340928 : }
155 :
156 : /// Wait for events on all channels.
157 216448 : fn wait(&mut self, timeout_millis: i64) -> walproposer::walproposer::WaitResult {
158 : // all channels are always writeable
159 730380 : for (i, mask) in self.masks.iter().enumerate() {
160 730380 : 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 730380 : }
166 : }
167 :
168 216448 : let cnt = self.sort_readable();
169 216448 :
170 216448 : let slice = &self.chans[0..cnt];
171 216448 : match executor::epoll_chans(slice, timeout_millis) {
172 91959 : None => walproposer::walproposer::WaitResult::Timeout,
173 : Some(0) => {
174 2856 : let msg = self.os.node_events().must_recv();
175 2856 : match msg {
176 2856 : NodeEvent::Internal(AnyMessage::Just32(0)) => {
177 2856 : // got a notification about new WAL available
178 2856 : }
179 0 : NodeEvent::Internal(_) => unreachable!(),
180 0 : NodeEvent::Accept(_) => unreachable!(),
181 : }
182 2856 : walproposer::walproposer::WaitResult::Latch
183 : }
184 121633 : Some(index) => walproposer::walproposer::WaitResult::Network(
185 121633 : self.sk_ptrs[index],
186 121633 : WL_SOCKET_READABLE,
187 121633 : ),
188 : }
189 216448 : }
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 73694 : pub fn new(args: Args) -> Self {
213 73694 : // initialize connection state for each safekeeper
214 73694 : let sk_conns = args
215 73694 : .config
216 73694 : .safekeepers_list
217 73694 : .iter()
218 221082 : .map(|s| {
219 221082 : SafekeeperConn::new(
220 221082 : s.split(':').next().unwrap().to_string(),
221 221082 : s.split(':').nth(1).unwrap().to_string(),
222 221082 : )
223 221082 : })
224 73694 : .collect::<Vec<_>>();
225 73694 :
226 73694 : Self {
227 73694 : os: args.os,
228 73694 : safekeepers: RefCell::new(sk_conns),
229 73694 : disk: args.disk,
230 73694 : redo_start_lsn: args.redo_start_lsn,
231 73694 : last_logged_commit_lsn: 0,
232 73694 : shmem: UnsafeCell::new(walproposer::api_bindings::empty_shmem()),
233 73694 : config: args.config,
234 73694 : event_set: RefCell::new(None),
235 73694 : }
236 73694 : }
237 :
238 : /// Get SafekeeperConn for the given Safekeeper.
239 2366467 : fn get_conn(&self, sk: &mut walproposer::bindings::Safekeeper) -> RefMut<'_, SafekeeperConn> {
240 2366467 : let sk_port = unsafe { CStr::from_ptr(sk.port).to_str().unwrap() };
241 2366467 : let state = self.safekeepers.borrow_mut();
242 2366467 : RefMut::map(state, |v| {
243 2366467 : v.iter_mut()
244 4729921 : .find(|conn| conn.port == sk_port)
245 2366467 : .expect("safekeeper conn not found by port")
246 2366467 : })
247 2366467 : }
248 : }
249 :
250 : impl ApiImpl for SimulationApi {
251 2522563 : fn get_current_timestamp(&self) -> i64 {
252 2522563 : debug!("get_current_timestamp");
253 : // PG TimestampTZ is microseconds, but simulation unit is assumed to be
254 : // milliseconds, so add 10^3
255 2522563 : self.os.now() as i64 * 1000
256 2522563 : }
257 :
258 6903 : fn update_donor(&self, donor: &mut walproposer::bindings::Safekeeper, donor_lsn: u64) {
259 6903 : let mut shmem = unsafe { *self.get_shmem_state() };
260 6903 : shmem.propEpochStartLsn.value = donor_lsn;
261 6903 : shmem.donor_conninfo = donor.conninfo;
262 6903 : }
263 :
264 270482 : fn conn_status(
265 270482 : &self,
266 270482 : _: &mut walproposer::bindings::Safekeeper,
267 270482 : ) -> walproposer::bindings::WalProposerConnStatusType {
268 270482 : debug!("conn_status");
269 : // break the connection with a 10% chance
270 270482 : if self.os.random(100) < 10 {
271 27163 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_BAD
272 : } else {
273 243319 : walproposer::bindings::WalProposerConnStatusType_WP_CONNECTION_OK
274 : }
275 270482 : }
276 :
277 270482 : fn conn_connect_start(&self, sk: &mut walproposer::bindings::Safekeeper) {
278 270482 : debug!("conn_connect_start");
279 270482 : let mut conn = self.get_conn(sk);
280 270482 :
281 270482 : assert!(conn.socket.is_none());
282 270482 : let socket = self.os.open_tcp(conn.node_id);
283 270482 : conn.socket = Some(socket);
284 270482 : conn.raw_ptr = sk;
285 270482 : conn.is_connecting = true;
286 270482 : }
287 :
288 243319 : fn conn_connect_poll(
289 243319 : &self,
290 243319 : _: &mut walproposer::bindings::Safekeeper,
291 243319 : ) -> walproposer::bindings::WalProposerConnectPollStatusType {
292 243319 : debug!("conn_connect_poll");
293 : // TODO: break the connection here
294 243319 : walproposer::bindings::WalProposerConnectPollStatusType_WP_CONN_POLLING_OK
295 243319 : }
296 :
297 243319 : fn conn_send_query(&self, sk: &mut walproposer::bindings::Safekeeper, query: &str) -> bool {
298 243319 : debug!("conn_send_query: {}", query);
299 243319 : self.get_conn(sk).is_start_wal_push = true;
300 243319 : true
301 243319 : }
302 :
303 243319 : fn conn_get_query_result(
304 243319 : &self,
305 243319 : _: &mut walproposer::bindings::Safekeeper,
306 243319 : ) -> walproposer::bindings::WalProposerExecStatusType {
307 243319 : debug!("conn_get_query_result");
308 : // TODO: break the connection here
309 243319 : walproposer::bindings::WalProposerExecStatusType_WP_EXEC_SUCCESS_COPYBOTH
310 243319 : }
311 :
312 131561 : fn conn_async_read(
313 131561 : &self,
314 131561 : sk: &mut walproposer::bindings::Safekeeper,
315 131561 : vec: &mut Vec<u8>,
316 131561 : ) -> walproposer::bindings::PGAsyncReadResult {
317 131561 : debug!("conn_async_read");
318 131561 : let mut conn = self.get_conn(sk);
319 :
320 131561 : let socket = if let Some(socket) = conn.socket.as_mut() {
321 131561 : socket
322 : } else {
323 : // socket is already closed
324 0 : return walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL;
325 : };
326 :
327 131561 : let msg = socket.recv_chan().try_recv();
328 :
329 120035 : match msg {
330 : None => {
331 : // no message is ready
332 11526 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_TRY_AGAIN
333 : }
334 : Some(NetEvent::Closed) => {
335 : // connection is closed
336 59349 : debug!("conn_async_read: connection is closed");
337 59349 : conn.socket = None;
338 59349 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_FAIL
339 : }
340 60686 : Some(NetEvent::Message(msg)) => {
341 : // got a message
342 60686 : let b = match msg {
343 60686 : desim::proto::AnyMessage::Bytes(b) => b,
344 0 : _ => unreachable!(),
345 : };
346 60686 : vec.extend_from_slice(&b);
347 60686 : walproposer::bindings::PGAsyncReadResult_PG_ASYNC_READ_SUCCESS
348 : }
349 : }
350 131561 : }
351 :
352 271510 : fn conn_blocking_write(&self, sk: &mut walproposer::bindings::Safekeeper, buf: &[u8]) -> bool {
353 271510 : let mut conn = self.get_conn(sk);
354 271510 : debug!("conn_blocking_write to {}: {:?}", conn.node_id, buf);
355 271510 : let socket = conn.socket.as_mut().unwrap();
356 271510 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
357 271510 : true
358 271510 : }
359 :
360 31948 : fn conn_async_write(
361 31948 : &self,
362 31948 : sk: &mut walproposer::bindings::Safekeeper,
363 31948 : buf: &[u8],
364 31948 : ) -> walproposer::bindings::PGAsyncWriteResult {
365 31948 : let mut conn = self.get_conn(sk);
366 31948 : debug!("conn_async_write to {}: {:?}", conn.node_id, buf);
367 31948 : if let Some(socket) = conn.socket.as_mut() {
368 31948 : socket.send(desim::proto::AnyMessage::Bytes(Bytes::copy_from_slice(buf)));
369 31948 : } 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 31948 : walproposer::bindings::PGAsyncWriteResult_PG_ASYNC_WRITE_SUCCESS
375 31948 : }
376 :
377 7280 : fn wal_reader_allocate(&self, _: &mut walproposer::bindings::Safekeeper) -> NeonWALReadResult {
378 7280 : debug!("wal_reader_allocate");
379 7280 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
380 7280 : }
381 :
382 24668 : fn wal_read(
383 24668 : &self,
384 24668 : _sk: &mut walproposer::bindings::Safekeeper,
385 24668 : buf: &mut [u8],
386 24668 : startpos: u64,
387 24668 : ) -> NeonWALReadResult {
388 24668 : self.disk.lock().read(startpos, buf);
389 24668 : walproposer::bindings::NeonWALReadResult_NEON_WALREAD_SUCCESS
390 24668 : }
391 :
392 73694 : fn init_event_set(&self, _: &mut walproposer::bindings::WalProposer) {
393 73694 : debug!("init_event_set");
394 73694 : let new_event_set = EventSet::new(self.os.clone());
395 73694 : let old_event_set = self.event_set.replace(Some(new_event_set));
396 73694 : assert!(old_event_set.is_none());
397 73694 : }
398 :
399 535410 : fn update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper, event_mask: u32) {
400 535410 : debug!(
401 0 : "update_event_set, sk={:?}, events_mask={:#b}",
402 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
403 : );
404 535410 : let conn = self.get_conn(sk);
405 535410 :
406 535410 : self.event_set
407 535410 : .borrow_mut()
408 535410 : .as_mut()
409 535410 : .unwrap()
410 535410 : .update_event_set(&conn, event_mask);
411 535410 : }
412 :
413 486638 : fn add_safekeeper_event_set(
414 486638 : &self,
415 486638 : sk: &mut walproposer::bindings::Safekeeper,
416 486638 : event_mask: u32,
417 486638 : ) {
418 486638 : debug!(
419 0 : "add_safekeeper_event_set, sk={:?}, events_mask={:#b}",
420 0 : sk as *mut walproposer::bindings::Safekeeper, event_mask
421 : );
422 :
423 486638 : self.event_set
424 486638 : .borrow_mut()
425 486638 : .as_mut()
426 486638 : .unwrap()
427 486638 : .add_safekeeper(&self.get_conn(sk), event_mask);
428 486638 : }
429 :
430 304784 : fn rm_safekeeper_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
431 304784 : debug!(
432 0 : "rm_safekeeper_event_set, sk={:?}",
433 0 : sk as *mut walproposer::bindings::Safekeeper,
434 : );
435 :
436 304784 : self.event_set
437 304784 : .borrow_mut()
438 304784 : .as_mut()
439 304784 : .unwrap()
440 304784 : .remove_safekeeper(&self.get_conn(sk));
441 304784 : }
442 :
443 36194 : fn active_state_update_event_set(&self, sk: &mut walproposer::bindings::Safekeeper) {
444 36194 : debug!("active_state_update_event_set");
445 :
446 36194 : assert!(sk.state == walproposer::bindings::SafekeeperState_SS_ACTIVE);
447 36194 : self.event_set
448 36194 : .borrow_mut()
449 36194 : .as_mut()
450 36194 : .unwrap()
451 36194 : .refresh_event_set();
452 36194 : }
453 :
454 101440 : fn wal_reader_events(&self, _sk: &mut walproposer::bindings::Safekeeper) -> u32 {
455 101440 : 0
456 101440 : }
457 :
458 703086 : fn wait_event_set(
459 703086 : &self,
460 703086 : _: &mut walproposer::bindings::WalProposer,
461 703086 : timeout_millis: i64,
462 703086 : ) -> walproposer::walproposer::WaitResult {
463 703086 : // TODO: handle multiple stages as part of the simulation (e.g. connect, start_wal_push, etc)
464 703086 : let mut conns = self.safekeepers.borrow_mut();
465 1622870 : for conn in conns.iter_mut() {
466 1622870 : if conn.socket.is_some() && conn.is_connecting {
467 243319 : conn.is_connecting = false;
468 243319 : debug!("wait_event_set, connecting to {}:{}", conn.host, conn.port);
469 243319 : return walproposer::walproposer::WaitResult::Network(
470 243319 : conn.raw_ptr,
471 243319 : WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE,
472 243319 : );
473 1379551 : }
474 1379551 : if conn.socket.is_some() && conn.is_start_wal_push {
475 243319 : conn.is_start_wal_push = false;
476 243319 : debug!(
477 0 : "wait_event_set, start wal push to {}:{}",
478 : conn.host, conn.port
479 : );
480 243319 : return walproposer::walproposer::WaitResult::Network(
481 243319 : conn.raw_ptr,
482 243319 : WL_SOCKET_READABLE,
483 243319 : );
484 1136232 : }
485 : }
486 216448 : drop(conns);
487 216448 :
488 216448 : let res = self
489 216448 : .event_set
490 216448 : .borrow_mut()
491 216448 : .as_mut()
492 216448 : .unwrap()
493 216448 : .wait(timeout_millis);
494 216448 :
495 216448 : debug!(
496 0 : "wait_event_set, timeout_millis={}, res={:?}",
497 : timeout_millis, res,
498 : );
499 146468 : res
500 633106 : }
501 :
502 73694 : fn strong_random(&self, buf: &mut [u8]) -> bool {
503 73694 : debug!("strong_random");
504 73694 : buf.fill(0);
505 73694 : true
506 73694 : }
507 :
508 2660 : fn finish_sync_safekeepers(&self, lsn: u64) {
509 2660 : debug!("finish_sync_safekeepers, lsn={}", lsn);
510 2660 : executor::exit(0, Lsn(lsn).to_string());
511 2660 : }
512 :
513 714994 : fn log_internal(&self, _wp: &mut walproposer::bindings::WalProposer, level: Level, msg: &str) {
514 714994 : debug!("wp_log[{}] {}", level, msg);
515 714994 : if level == Level::Fatal || level == Level::Panic {
516 536 : if msg.contains("rejects our connection request with term") {
517 305 : // collected quorum with lower term, then got rejected by next connected safekeeper
518 305 : executor::exit(1, msg.to_owned());
519 305 : }
520 536 : 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());
524 514 : }
525 536 : if msg.contains("failed to download WAL for logical replicaiton") {
526 128 : // Recovery connection broken and recovery was failed
527 128 : executor::exit(1, msg.to_owned());
528 408 : }
529 536 : if msg.contains("missing majority of votes, collected") {
530 81 : // Voting bug when safekeeper disconnects after voting
531 81 : executor::exit(1, msg.to_owned());
532 455 : }
533 536 : panic!("unknown FATAL error from walproposer: {}", msg);
534 714458 : }
535 714458 : }
536 :
537 5465 : fn after_election(&self, wp: &mut walproposer::bindings::WalProposer) {
538 5465 : let prop_lsn = wp.propEpochStartLsn;
539 5465 : let prop_term = wp.propTerm;
540 5465 :
541 5465 : let mut prev_lsn: u64 = 0;
542 5465 : let mut prev_term: u64 = 0;
543 5465 :
544 5465 : unsafe {
545 5465 : let history = wp.propTermHistory.entries;
546 5465 : let len = wp.propTermHistory.n_entries as usize;
547 5465 : if len > 1 {
548 3555 : let entry = *history.wrapping_add(len - 2);
549 3555 : prev_lsn = entry.lsn;
550 3555 : prev_term = entry.term;
551 3555 : }
552 : }
553 :
554 5465 : let msg = format!(
555 5465 : "prop_elected;{};{};{};{}",
556 5465 : prop_lsn, prop_term, prev_lsn, prev_term
557 5465 : );
558 5465 :
559 5465 : debug!(msg);
560 5465 : self.os.log_event(msg);
561 5465 : }
562 :
563 2037 : fn get_redo_start_lsn(&self) -> u64 {
564 2037 : debug!("get_redo_start_lsn -> {:?}", self.redo_start_lsn);
565 2037 : self.redo_start_lsn.expect("redo_start_lsn is not set").0
566 2037 : }
567 :
568 17877 : fn get_shmem_state(&self) -> *mut walproposer::bindings::WalproposerShmemState {
569 17877 : self.shmem.get()
570 17877 : }
571 :
572 1152 : fn start_streaming(
573 1152 : &self,
574 1152 : startpos: u64,
575 1152 : callback: &walproposer::walproposer::StreamingCallback,
576 1152 : ) {
577 1152 : let disk = &self.disk;
578 1152 : let disk_lsn = disk.lock().flush_rec_ptr().0;
579 1152 : debug!("start_streaming at {} (disk_lsn={})", startpos, disk_lsn);
580 1152 : if startpos < disk_lsn {
581 353 : debug!("startpos < disk_lsn, it means we wrote some transaction even before streaming started");
582 799 : }
583 1152 : assert!(startpos <= disk_lsn);
584 1152 : let mut broadcasted = Lsn(startpos);
585 :
586 : loop {
587 3792 : let available = disk.lock().flush_rec_ptr();
588 3792 : assert!(available >= broadcasted);
589 2640 : callback.broadcast(broadcasted, available);
590 2640 : broadcasted = available;
591 2640 : callback.poll();
592 : }
593 : }
594 :
595 12464 : fn process_safekeeper_feedback(
596 12464 : &mut self,
597 12464 : wp: &mut walproposer::bindings::WalProposer,
598 12464 : _sk: &mut walproposer::bindings::Safekeeper,
599 12464 : ) {
600 12464 : debug!("process_safekeeper_feedback, commit_lsn={}", wp.commitLsn);
601 12464 : if wp.commitLsn > self.last_logged_commit_lsn {
602 2662 : self.os.log_event(format!("commit_lsn;{}", wp.commitLsn));
603 2662 : self.last_logged_commit_lsn = wp.commitLsn;
604 9802 : }
605 12464 : }
606 :
607 767 : fn get_flush_rec_ptr(&self) -> u64 {
608 767 : let lsn = self.disk.lock().flush_rec_ptr();
609 767 : debug!("get_flush_rec_ptr: {}", lsn);
610 767 : lsn.0
611 767 : }
612 :
613 5465 : fn recovery_download(
614 5465 : &self,
615 5465 : wp: &mut walproposer::bindings::WalProposer,
616 5465 : sk: &mut walproposer::bindings::Safekeeper,
617 5465 : ) -> bool {
618 5465 : let mut startpos = wp.truncateLsn;
619 5465 : let endpos = wp.propEpochStartLsn;
620 5465 :
621 5465 : if startpos == endpos {
622 3278 : debug!("recovery_download: nothing to download");
623 3278 : return true;
624 2187 : }
625 2187 :
626 2187 : debug!("recovery_download from {} to {}", startpos, endpos,);
627 :
628 2187 : let replication_prompt = format!(
629 2187 : "START_REPLICATION {} {} {} {}",
630 2187 : self.config.ttid.tenant_id, self.config.ttid.timeline_id, startpos, endpos,
631 2187 : );
632 2187 : let async_conn = self.get_conn(sk);
633 2187 :
634 2187 : let conn = self.os.open_tcp(async_conn.node_id);
635 2187 : conn.send(desim::proto::AnyMessage::Bytes(replication_prompt.into()));
636 2187 :
637 2187 : let chan = conn.recv_chan();
638 3728 : while startpos < endpos {
639 2187 : let event = chan.recv();
640 2059 : match event {
641 : NetEvent::Closed => {
642 128 : debug!("connection closed in recovery");
643 128 : break;
644 : }
645 2059 : NetEvent::Message(AnyMessage::Bytes(b)) => {
646 2059 : debug!("got recovery bytes from safekeeper");
647 1541 : self.disk.lock().write(startpos, &b);
648 1541 : startpos += b.len() as u64;
649 : }
650 0 : NetEvent::Message(_) => unreachable!(),
651 : }
652 : }
653 :
654 1669 : debug!("recovery finished at {}", startpos);
655 :
656 1669 : startpos == endpos
657 4947 : }
658 :
659 88628 : fn conn_finish(&self, sk: &mut walproposer::bindings::Safekeeper) {
660 88628 : let mut conn = self.get_conn(sk);
661 88628 : debug!("conn_finish to {}", conn.node_id);
662 88628 : if let Some(socket) = conn.socket.as_mut() {
663 29229 : socket.close();
664 59399 : } else {
665 59399 : // connection is already closed
666 59399 : }
667 88628 : conn.socket = None;
668 88628 : }
669 :
670 86512 : fn conn_error_message(&self, _sk: &mut walproposer::bindings::Safekeeper) -> String {
671 86512 : "connection is closed, probably".into()
672 86512 : }
673 : }
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