Line data Source code
1 : //! This module contains global `(tenant_id, timeline_id)` -> `Arc<Timeline>` mapping.
2 : //! All timelines should always be present in this map, this is done by loading them
3 : //! all from the disk on startup and keeping them in memory.
4 :
5 : use crate::defaults::DEFAULT_EVICTION_CONCURRENCY;
6 : use crate::rate_limit::RateLimiter;
7 : use crate::state::TimelinePersistentState;
8 : use crate::timeline::{get_tenant_dir, get_timeline_dir, Timeline, TimelineError};
9 : use crate::timelines_set::TimelinesSet;
10 : use crate::wal_storage::Storage;
11 : use crate::{control_file, wal_storage, SafeKeeperConf};
12 : use anyhow::{bail, Context, Result};
13 : use camino::Utf8PathBuf;
14 : use camino_tempfile::Utf8TempDir;
15 : use safekeeper_api::membership::Configuration;
16 : use safekeeper_api::ServerInfo;
17 : use serde::Serialize;
18 : use std::collections::HashMap;
19 : use std::str::FromStr;
20 : use std::sync::atomic::Ordering;
21 : use std::sync::{Arc, Mutex};
22 : use std::time::{Duration, Instant};
23 : use tokio::fs;
24 : use tracing::*;
25 : use utils::crashsafe::{durable_rename, fsync_async_opt};
26 : use utils::id::{TenantId, TenantTimelineId, TimelineId};
27 : use utils::lsn::Lsn;
28 :
29 : // Timeline entry in the global map: either a ready timeline, or mark that it is
30 : // being created.
31 : #[derive(Clone)]
32 : enum GlobalMapTimeline {
33 : CreationInProgress,
34 : Timeline(Arc<Timeline>),
35 : }
36 :
37 : struct GlobalTimelinesState {
38 : timelines: HashMap<TenantTimelineId, GlobalMapTimeline>,
39 :
40 : // A tombstone indicates this timeline used to exist has been deleted. These are used to prevent
41 : // on-demand timeline creation from recreating deleted timelines. This is only soft-enforced, as
42 : // this map is dropped on restart.
43 : tombstones: HashMap<TenantTimelineId, Instant>,
44 :
45 : conf: Arc<SafeKeeperConf>,
46 : broker_active_set: Arc<TimelinesSet>,
47 : global_rate_limiter: RateLimiter,
48 : }
49 :
50 : impl GlobalTimelinesState {
51 : /// Get dependencies for a timeline constructor.
52 0 : fn get_dependencies(&self) -> (Arc<SafeKeeperConf>, Arc<TimelinesSet>, RateLimiter) {
53 0 : (
54 0 : self.conf.clone(),
55 0 : self.broker_active_set.clone(),
56 0 : self.global_rate_limiter.clone(),
57 0 : )
58 0 : }
59 :
60 : /// Get timeline from the map. Returns error if timeline doesn't exist or
61 : /// creation is in progress.
62 0 : fn get(&self, ttid: &TenantTimelineId) -> Result<Arc<Timeline>, TimelineError> {
63 0 : match self.timelines.get(ttid).cloned() {
64 0 : Some(GlobalMapTimeline::Timeline(tli)) => Ok(tli),
65 : Some(GlobalMapTimeline::CreationInProgress) => {
66 0 : Err(TimelineError::CreationInProgress(*ttid))
67 : }
68 0 : None => Err(TimelineError::NotFound(*ttid)),
69 : }
70 0 : }
71 :
72 0 : fn delete(&mut self, ttid: TenantTimelineId) {
73 0 : self.timelines.remove(&ttid);
74 0 : self.tombstones.insert(ttid, Instant::now());
75 0 : }
76 : }
77 :
78 : /// A struct used to manage access to the global timelines map.
79 : pub struct GlobalTimelines {
80 : state: Mutex<GlobalTimelinesState>,
81 : }
82 :
83 : impl GlobalTimelines {
84 : /// Create a new instance of the global timelines map.
85 0 : pub fn new(conf: Arc<SafeKeeperConf>) -> Self {
86 0 : Self {
87 0 : state: Mutex::new(GlobalTimelinesState {
88 0 : timelines: HashMap::new(),
89 0 : tombstones: HashMap::new(),
90 0 : conf,
91 0 : broker_active_set: Arc::new(TimelinesSet::default()),
92 0 : global_rate_limiter: RateLimiter::new(1, 1),
93 0 : }),
94 0 : }
95 0 : }
96 :
97 : /// Inject dependencies needed for the timeline constructors and load all timelines to memory.
98 0 : pub async fn init(&self) -> Result<()> {
99 0 : // clippy isn't smart enough to understand that drop(state) releases the
100 0 : // lock, so use explicit block
101 0 : let tenants_dir = {
102 0 : let mut state = self.state.lock().unwrap();
103 0 : state.global_rate_limiter = RateLimiter::new(
104 0 : state.conf.partial_backup_concurrency,
105 0 : DEFAULT_EVICTION_CONCURRENCY,
106 0 : );
107 0 :
108 0 : // Iterate through all directories and load tenants for all directories
109 0 : // named as a valid tenant_id.
110 0 : state.conf.workdir.clone()
111 0 : };
112 0 : let mut tenant_count = 0;
113 0 : for tenants_dir_entry in std::fs::read_dir(&tenants_dir)
114 0 : .with_context(|| format!("failed to list tenants dir {}", tenants_dir))?
115 : {
116 0 : match &tenants_dir_entry {
117 0 : Ok(tenants_dir_entry) => {
118 0 : if let Ok(tenant_id) =
119 0 : TenantId::from_str(tenants_dir_entry.file_name().to_str().unwrap_or(""))
120 : {
121 0 : tenant_count += 1;
122 0 : self.load_tenant_timelines(tenant_id).await?;
123 0 : }
124 : }
125 0 : Err(e) => error!(
126 0 : "failed to list tenants dir entry {:?} in directory {}, reason: {:?}",
127 : tenants_dir_entry, tenants_dir, e
128 : ),
129 : }
130 : }
131 :
132 0 : info!(
133 0 : "found {} tenants directories, successfully loaded {} timelines",
134 0 : tenant_count,
135 0 : self.state.lock().unwrap().timelines.len()
136 : );
137 0 : Ok(())
138 0 : }
139 :
140 : /// Loads all timelines for the given tenant to memory. Returns fs::read_dir
141 : /// errors if any.
142 : ///
143 : /// It is async, but self.state lock is sync and there is no important
144 : /// reason to make it async (it is always held for a short while), so we
145 : /// just lock and unlock it for each timeline -- this function is called
146 : /// during init when nothing else is running, so this is fine.
147 0 : async fn load_tenant_timelines(&self, tenant_id: TenantId) -> Result<()> {
148 0 : let (conf, broker_active_set, partial_backup_rate_limiter) = {
149 0 : let state = self.state.lock().unwrap();
150 0 : state.get_dependencies()
151 0 : };
152 0 :
153 0 : let timelines_dir = get_tenant_dir(&conf, &tenant_id);
154 0 : for timelines_dir_entry in std::fs::read_dir(&timelines_dir)
155 0 : .with_context(|| format!("failed to list timelines dir {}", timelines_dir))?
156 : {
157 0 : match &timelines_dir_entry {
158 0 : Ok(timeline_dir_entry) => {
159 0 : if let Ok(timeline_id) =
160 0 : TimelineId::from_str(timeline_dir_entry.file_name().to_str().unwrap_or(""))
161 : {
162 0 : let ttid = TenantTimelineId::new(tenant_id, timeline_id);
163 0 : match Timeline::load_timeline(conf.clone(), ttid) {
164 0 : Ok(tli) => {
165 0 : let mut shared_state = tli.write_shared_state().await;
166 0 : self.state
167 0 : .lock()
168 0 : .unwrap()
169 0 : .timelines
170 0 : .insert(ttid, GlobalMapTimeline::Timeline(tli.clone()));
171 0 : tli.bootstrap(
172 0 : &mut shared_state,
173 0 : &conf,
174 0 : broker_active_set.clone(),
175 0 : partial_backup_rate_limiter.clone(),
176 0 : );
177 : }
178 : // If we can't load a timeline, it's most likely because of a corrupted
179 : // directory. We will log an error and won't allow to delete/recreate
180 : // this timeline. The only way to fix this timeline is to repair manually
181 : // and restart the safekeeper.
182 0 : Err(e) => error!(
183 0 : "failed to load timeline {} for tenant {}, reason: {:?}",
184 : timeline_id, tenant_id, e
185 : ),
186 : }
187 0 : }
188 : }
189 0 : Err(e) => error!(
190 0 : "failed to list timelines dir entry {:?} in directory {}, reason: {:?}",
191 : timelines_dir_entry, timelines_dir, e
192 : ),
193 : }
194 : }
195 :
196 0 : Ok(())
197 0 : }
198 :
199 : /// Get the number of timelines in the map.
200 0 : pub fn timelines_count(&self) -> usize {
201 0 : self.state.lock().unwrap().timelines.len()
202 0 : }
203 :
204 : /// Get the global safekeeper config.
205 0 : pub fn get_global_config(&self) -> Arc<SafeKeeperConf> {
206 0 : self.state.lock().unwrap().conf.clone()
207 0 : }
208 :
209 0 : pub fn get_global_broker_active_set(&self) -> Arc<TimelinesSet> {
210 0 : self.state.lock().unwrap().broker_active_set.clone()
211 0 : }
212 :
213 : /// Create a new timeline with the given id. If the timeline already exists, returns
214 : /// an existing timeline.
215 0 : pub(crate) async fn create(
216 0 : &self,
217 0 : ttid: TenantTimelineId,
218 0 : mconf: Configuration,
219 0 : server_info: ServerInfo,
220 0 : start_lsn: Lsn,
221 0 : commit_lsn: Lsn,
222 0 : ) -> Result<Arc<Timeline>> {
223 0 : let (conf, _, _) = {
224 0 : let state = self.state.lock().unwrap();
225 0 : if let Ok(timeline) = state.get(&ttid) {
226 : // Timeline already exists, return it.
227 0 : return Ok(timeline);
228 0 : }
229 0 :
230 0 : if state.tombstones.contains_key(&ttid) {
231 0 : anyhow::bail!("Timeline {ttid} is deleted, refusing to recreate");
232 0 : }
233 0 :
234 0 : state.get_dependencies()
235 0 : };
236 0 :
237 0 : info!("creating new timeline {}", ttid);
238 :
239 : // Do on disk initialization in tmp dir.
240 0 : let (_tmp_dir, tmp_dir_path) = create_temp_timeline_dir(&conf, ttid).await?;
241 :
242 : // TODO: currently we create only cfile. It would be reasonable to
243 : // immediately initialize first WAL segment as well.
244 0 : let state = TimelinePersistentState::new(&ttid, mconf, server_info, start_lsn, commit_lsn)?;
245 0 : control_file::FileStorage::create_new(&tmp_dir_path, state, conf.no_sync).await?;
246 0 : let timeline = self.load_temp_timeline(ttid, &tmp_dir_path, true).await?;
247 0 : Ok(timeline)
248 0 : }
249 :
250 : /// Move timeline from a temp directory to the main storage, and load it to
251 : /// the global map. Creating timeline in this way ensures atomicity: rename
252 : /// is atomic, so either move of the whole datadir succeeds or it doesn't,
253 : /// but corrupted data dir shouldn't be possible.
254 : ///
255 : /// We'd like to avoid holding map lock while doing IO, so it's a 3 step
256 : /// process:
257 : /// 1) check the global map that timeline doesn't exist and mark that we're
258 : /// creating it;
259 : /// 2) move the directory and load the timeline
260 : /// 3) take lock again and insert the timeline into the global map.
261 0 : pub async fn load_temp_timeline(
262 0 : &self,
263 0 : ttid: TenantTimelineId,
264 0 : tmp_path: &Utf8PathBuf,
265 0 : check_tombstone: bool,
266 0 : ) -> Result<Arc<Timeline>> {
267 : // Check for existence and mark that we're creating it.
268 0 : let (conf, broker_active_set, partial_backup_rate_limiter) = {
269 0 : let mut state = self.state.lock().unwrap();
270 0 : match state.timelines.get(&ttid) {
271 : Some(GlobalMapTimeline::CreationInProgress) => {
272 0 : bail!(TimelineError::CreationInProgress(ttid));
273 : }
274 : Some(GlobalMapTimeline::Timeline(_)) => {
275 0 : bail!(TimelineError::AlreadyExists(ttid));
276 : }
277 0 : _ => {}
278 0 : }
279 0 : if check_tombstone {
280 0 : if state.tombstones.contains_key(&ttid) {
281 0 : anyhow::bail!("timeline {ttid} is deleted, refusing to recreate");
282 0 : }
283 : } else {
284 : // We may be have been asked to load a timeline that was previously deleted (e.g. from `pull_timeline.rs`). We trust
285 : // that the human doing this manual intervention knows what they are doing, and remove its tombstone.
286 0 : if state.tombstones.remove(&ttid).is_some() {
287 0 : warn!("un-deleted timeline {ttid}");
288 0 : }
289 : }
290 0 : state
291 0 : .timelines
292 0 : .insert(ttid, GlobalMapTimeline::CreationInProgress);
293 0 : state.get_dependencies()
294 0 : };
295 0 :
296 0 : // Do the actual move and reflect the result in the map.
297 0 : match GlobalTimelines::install_temp_timeline(ttid, tmp_path, conf.clone()).await {
298 0 : Ok(timeline) => {
299 0 : let mut timeline_shared_state = timeline.write_shared_state().await;
300 0 : let mut state = self.state.lock().unwrap();
301 0 : assert!(matches!(
302 0 : state.timelines.get(&ttid),
303 : Some(GlobalMapTimeline::CreationInProgress)
304 : ));
305 :
306 0 : state
307 0 : .timelines
308 0 : .insert(ttid, GlobalMapTimeline::Timeline(timeline.clone()));
309 0 : drop(state);
310 0 : timeline.bootstrap(
311 0 : &mut timeline_shared_state,
312 0 : &conf,
313 0 : broker_active_set,
314 0 : partial_backup_rate_limiter,
315 0 : );
316 0 : drop(timeline_shared_state);
317 0 : Ok(timeline)
318 : }
319 0 : Err(e) => {
320 0 : // Init failed, remove the marker from the map
321 0 : let mut state = self.state.lock().unwrap();
322 0 : assert!(matches!(
323 0 : state.timelines.get(&ttid),
324 : Some(GlobalMapTimeline::CreationInProgress)
325 : ));
326 0 : state.timelines.remove(&ttid);
327 0 : Err(e)
328 : }
329 : }
330 0 : }
331 :
332 : /// Main part of load_temp_timeline: do the move and load.
333 0 : async fn install_temp_timeline(
334 0 : ttid: TenantTimelineId,
335 0 : tmp_path: &Utf8PathBuf,
336 0 : conf: Arc<SafeKeeperConf>,
337 0 : ) -> Result<Arc<Timeline>> {
338 0 : let tenant_path = get_tenant_dir(conf.as_ref(), &ttid.tenant_id);
339 0 : let timeline_path = get_timeline_dir(conf.as_ref(), &ttid);
340 0 :
341 0 : // We must have already checked that timeline doesn't exist in the map,
342 0 : // but there might be existing datadir: if timeline is corrupted it is
343 0 : // not loaded. We don't want to overwrite such a dir, so check for its
344 0 : // existence.
345 0 : match fs::metadata(&timeline_path).await {
346 : Ok(_) => {
347 : // Timeline directory exists on disk, we should leave state unchanged
348 : // and return error.
349 0 : bail!(TimelineError::Invalid(ttid));
350 : }
351 0 : Err(e) if e.kind() == std::io::ErrorKind::NotFound => {}
352 0 : Err(e) => {
353 0 : return Err(e.into());
354 : }
355 : }
356 :
357 0 : info!(
358 0 : "moving timeline {} from {} to {}",
359 : ttid, tmp_path, timeline_path
360 : );
361 :
362 : // Now it is safe to move the timeline directory to the correct
363 : // location. First, create tenant directory. Ignore error if it already
364 : // exists.
365 0 : if let Err(e) = tokio::fs::create_dir(&tenant_path).await {
366 0 : if e.kind() != std::io::ErrorKind::AlreadyExists {
367 0 : return Err(e.into());
368 0 : }
369 0 : }
370 : // fsync it
371 0 : fsync_async_opt(&tenant_path, !conf.no_sync).await?;
372 : // and its creation
373 0 : fsync_async_opt(&conf.workdir, !conf.no_sync).await?;
374 :
375 : // Do the move.
376 0 : durable_rename(tmp_path, &timeline_path, !conf.no_sync).await?;
377 :
378 0 : Timeline::load_timeline(conf, ttid)
379 0 : }
380 :
381 : /// Get a timeline from the global map. If it's not present, it doesn't exist on disk,
382 : /// or was corrupted and couldn't be loaded on startup. Returned timeline is always valid,
383 : /// i.e. loaded in memory and not cancelled.
384 0 : pub(crate) fn get(&self, ttid: TenantTimelineId) -> Result<Arc<Timeline>, TimelineError> {
385 0 : let tli_res = {
386 0 : let state = self.state.lock().unwrap();
387 0 : state.get(&ttid)
388 0 : };
389 0 : match tli_res {
390 0 : Ok(tli) => {
391 0 : if tli.is_cancelled() {
392 0 : return Err(TimelineError::Cancelled(ttid));
393 0 : }
394 0 : Ok(tli)
395 : }
396 0 : _ => tli_res,
397 : }
398 0 : }
399 :
400 : /// Returns all timelines. This is used for background timeline processes.
401 0 : pub fn get_all(&self) -> Vec<Arc<Timeline>> {
402 0 : let global_lock = self.state.lock().unwrap();
403 0 : global_lock
404 0 : .timelines
405 0 : .values()
406 0 : .filter_map(|t| match t {
407 0 : GlobalMapTimeline::Timeline(t) => {
408 0 : if t.is_cancelled() {
409 0 : None
410 : } else {
411 0 : Some(t.clone())
412 : }
413 : }
414 0 : _ => None,
415 0 : })
416 0 : .collect()
417 0 : }
418 :
419 : /// Returns all timelines belonging to a given tenant. Used for deleting all timelines of a tenant,
420 : /// and that's why it can return cancelled timelines, to retry deleting them.
421 0 : fn get_all_for_tenant(&self, tenant_id: TenantId) -> Vec<Arc<Timeline>> {
422 0 : let global_lock = self.state.lock().unwrap();
423 0 : global_lock
424 0 : .timelines
425 0 : .values()
426 0 : .filter_map(|t| match t {
427 0 : GlobalMapTimeline::Timeline(t) => Some(t.clone()),
428 0 : _ => None,
429 0 : })
430 0 : .filter(|t| t.ttid.tenant_id == tenant_id)
431 0 : .collect()
432 0 : }
433 :
434 : /// Cancels timeline, then deletes the corresponding data directory.
435 : /// If only_local, doesn't remove WAL segments in remote storage.
436 0 : pub(crate) async fn delete(
437 0 : &self,
438 0 : ttid: &TenantTimelineId,
439 0 : only_local: bool,
440 0 : ) -> Result<TimelineDeleteForceResult> {
441 0 : let tli_res = {
442 0 : let state = self.state.lock().unwrap();
443 0 :
444 0 : if state.tombstones.contains_key(ttid) {
445 : // Presence of a tombstone guarantees that a previous deletion has completed and there is no work to do.
446 0 : info!("Timeline {ttid} was already deleted");
447 0 : return Ok(TimelineDeleteForceResult {
448 0 : dir_existed: false,
449 0 : was_active: false,
450 0 : });
451 0 : }
452 0 :
453 0 : state.get(ttid)
454 : };
455 :
456 0 : let result = match tli_res {
457 0 : Ok(timeline) => {
458 0 : let was_active = timeline.broker_active.load(Ordering::Relaxed);
459 0 :
460 0 : info!("deleting timeline {}, only_local={}", ttid, only_local);
461 0 : timeline.shutdown().await;
462 :
463 : // Take a lock and finish the deletion holding this mutex.
464 0 : let mut shared_state = timeline.write_shared_state().await;
465 :
466 0 : let dir_existed = timeline.delete(&mut shared_state, only_local).await?;
467 :
468 0 : Ok(TimelineDeleteForceResult {
469 0 : dir_existed,
470 0 : was_active, // TODO: we probably should remove this field
471 0 : })
472 : }
473 : Err(_) => {
474 : // Timeline is not memory, but it may still exist on disk in broken state.
475 0 : let dir_path = get_timeline_dir(self.state.lock().unwrap().conf.as_ref(), ttid);
476 0 : let dir_existed = delete_dir(dir_path)?;
477 :
478 0 : Ok(TimelineDeleteForceResult {
479 0 : dir_existed,
480 0 : was_active: false,
481 0 : })
482 : }
483 : };
484 :
485 : // Finalize deletion, by dropping Timeline objects and storing smaller tombstones. The tombstones
486 : // are used to prevent still-running computes from re-creating the same timeline when they send data,
487 : // and to speed up repeated deletion calls by avoiding re-listing objects.
488 0 : self.state.lock().unwrap().delete(*ttid);
489 0 :
490 0 : result
491 0 : }
492 :
493 : /// Deactivates and deletes all timelines for the tenant. Returns map of all timelines which
494 : /// the tenant had, `true` if a timeline was active. There may be a race if new timelines are
495 : /// created simultaneously. In that case the function will return error and the caller should
496 : /// retry tenant deletion again later.
497 : ///
498 : /// If only_local, doesn't remove WAL segments in remote storage.
499 0 : pub async fn delete_force_all_for_tenant(
500 0 : &self,
501 0 : tenant_id: &TenantId,
502 0 : only_local: bool,
503 0 : ) -> Result<HashMap<TenantTimelineId, TimelineDeleteForceResult>> {
504 0 : info!("deleting all timelines for tenant {}", tenant_id);
505 0 : let to_delete = self.get_all_for_tenant(*tenant_id);
506 0 :
507 0 : let mut err = None;
508 0 :
509 0 : let mut deleted = HashMap::new();
510 0 : for tli in &to_delete {
511 0 : match self.delete(&tli.ttid, only_local).await {
512 0 : Ok(result) => {
513 0 : deleted.insert(tli.ttid, result);
514 0 : }
515 0 : Err(e) => {
516 0 : error!("failed to delete timeline {}: {}", tli.ttid, e);
517 : // Save error to return later.
518 0 : err = Some(e);
519 : }
520 : }
521 : }
522 :
523 : // If there was an error, return it.
524 0 : if let Some(e) = err {
525 0 : return Err(e);
526 0 : }
527 0 :
528 0 : // There may be broken timelines on disk, so delete the whole tenant dir as well.
529 0 : // Note that we could concurrently create new timelines while we were deleting them,
530 0 : // so the directory may be not empty. In this case timelines will have bad state
531 0 : // and timeline background jobs can panic.
532 0 : delete_dir(get_tenant_dir(
533 0 : self.state.lock().unwrap().conf.as_ref(),
534 0 : tenant_id,
535 0 : ))?;
536 :
537 0 : Ok(deleted)
538 0 : }
539 :
540 0 : pub fn housekeeping(&self, tombstone_ttl: &Duration) {
541 0 : let mut state = self.state.lock().unwrap();
542 0 :
543 0 : // We keep tombstones long enough to have a good chance of preventing rogue computes from re-creating deleted
544 0 : // timelines. If a compute kept running for longer than this TTL (or across a safekeeper restart) then they
545 0 : // may recreate a deleted timeline.
546 0 : let now = Instant::now();
547 0 : state
548 0 : .tombstones
549 0 : .retain(|_, v| now.duration_since(*v) < *tombstone_ttl);
550 0 : }
551 : }
552 :
553 : #[derive(Clone, Copy, Serialize)]
554 : pub struct TimelineDeleteForceResult {
555 : pub dir_existed: bool,
556 : pub was_active: bool,
557 : }
558 :
559 : /// Deletes directory and it's contents. Returns false if directory does not exist.
560 0 : fn delete_dir(path: Utf8PathBuf) -> Result<bool> {
561 0 : match std::fs::remove_dir_all(path) {
562 0 : Ok(_) => Ok(true),
563 0 : Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(false),
564 0 : Err(e) => Err(e.into()),
565 : }
566 0 : }
567 :
568 : /// Create temp directory for a new timeline. It needs to be located on the same
569 : /// filesystem as the rest of the timelines. It will be automatically deleted when
570 : /// Utf8TempDir goes out of scope.
571 0 : pub async fn create_temp_timeline_dir(
572 0 : conf: &SafeKeeperConf,
573 0 : ttid: TenantTimelineId,
574 0 : ) -> Result<(Utf8TempDir, Utf8PathBuf)> {
575 0 : let temp_base = conf.workdir.join("tmp");
576 0 :
577 0 : tokio::fs::create_dir_all(&temp_base).await?;
578 :
579 0 : let tli_dir = camino_tempfile::Builder::new()
580 0 : .suffix("_temptli")
581 0 : .prefix(&format!("{}_{}_", ttid.tenant_id, ttid.timeline_id))
582 0 : .tempdir_in(temp_base)?;
583 :
584 0 : let tli_dir_path = tli_dir.path().to_path_buf();
585 0 :
586 0 : Ok((tli_dir, tli_dir_path))
587 0 : }
588 :
589 : /// Do basic validation of a temp timeline, before moving it to the global map.
590 0 : pub async fn validate_temp_timeline(
591 0 : conf: &SafeKeeperConf,
592 0 : ttid: TenantTimelineId,
593 0 : path: &Utf8PathBuf,
594 0 : ) -> Result<(Lsn, Lsn)> {
595 0 : let control_path = path.join("safekeeper.control");
596 :
597 0 : let control_store = control_file::FileStorage::load_control_file(control_path)?;
598 0 : if control_store.server.wal_seg_size == 0 {
599 0 : bail!("wal_seg_size is not set");
600 0 : }
601 :
602 0 : let wal_store = wal_storage::PhysicalStorage::new(&ttid, path, &control_store, conf.no_sync)?;
603 :
604 0 : let commit_lsn = control_store.commit_lsn;
605 0 : let flush_lsn = wal_store.flush_lsn();
606 0 :
607 0 : Ok((commit_lsn, flush_lsn))
608 0 : }
|
