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safekeeper: log LSNs on walreceiver/walsender exit.

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Useful for observability.
This commit is contained in:
Arseny Sher
2024-05-13 13:19:12 +03:00
committed by Arseny Sher
parent e3f51abadf
commit de8dfee4bd
2 changed files with 29 additions and 11 deletions
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11
safekeeper/src/send_wal.rs
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@@ -340,12 +340,16 @@ impl SafekeeperPostgresHandler {
start_pos: Lsn,
term: Option<Term>,
) -> Result<(), QueryError> {
let tli = GlobalTimelines::get(self.ttid).map_err(|e| QueryError::Other(e.into()))?;
if let Err(end) = self
.handle_start_replication_guts(pgb, start_pos, term)
.handle_start_replication_guts(pgb, start_pos, term, tli.clone())
.await
{
let info = tli.get_safekeeper_info(&self.conf).await;
// Log the result and probably send it to the client, closing the stream.
pgb.handle_copy_stream_end(end).await;
pgb.handle_copy_stream_end(end)
.instrument(info_span!("", term=%info.term, last_log_term=%info.last_log_term, flush_lsn=%Lsn(info.flush_lsn), commit_lsn=%Lsn(info.flush_lsn)))
.await;
}
Ok(())
}
@@ -355,10 +359,9 @@ impl SafekeeperPostgresHandler {
pgb: &mut PostgresBackend<IO>,
start_pos: Lsn,
term: Option<Term>,
tli: Arc<Timeline>,
) -> Result<(), CopyStreamHandlerEnd> {
let appname = self.appname.clone();
let tli =
GlobalTimelines::get(self.ttid).map_err(|e| CopyStreamHandlerEnd::Other(e.into()))?;
// Use a guard object to remove our entry from the timeline when we are done.
let ws_guard = Arc::new(tli.get_walsenders().register(