fix(deletion): give the scheduled drain the cold-start DB connector (#8146)

## Summary

The scheduled `buzz-admin deletions drain` Job never gets past its first
database connection in a hosted staging deployment. Every run exits 5
after exactly 3 seconds with `pool timed out while waiting for an open
connection`.

The drain starts in a fresh pod with no mesh sidecar, and that pod's
first connection can take longer than the relay's 3-second acquisition
budget. `connect_store()` in `buzz-deletion` inherits that budget from
`DbConfig::default()`, with no retry. In the same pod, the same command
run 15 seconds later succeeds. TCP to Postgres, Redis, and S3 from a
sidecar-less pod is fine.

#7770 fixed the same failure for `buzz-admin storage-snapshot`, but only
inside `buzz-admin`. This PR moves that connector into `buzz-db` as
`Db::connect_cold_start` and uses it from both run-once workers:

- **Pool settings:** a 30s acquisition budget, and no idle spare
connections (`min_connections: 0`).
- **Retries:** startup timeouts and transient transport errors retry at
most twice, after 2s and 5s, so startup waits at most 97s.
- **No retry:** configuration, authentication, TLS, and protocol errors
fail immediately, and the error message stays free of credentials.
- **Per-worker settings:** each worker keeps its own pool size.
Storage-snapshot stays at 1 connection, and deletion stays at
`BUZZ_DB_POOL_SIZE` (default 20). Each worker also keeps its session
timeouts.
- **Startup events:** the stderr events carry a worker prefix.
Storage-snapshot still emits `storage_snapshot_db_connect_*`, and the
deletion worker now emits `deletion_db_connect_*`.

- **Error text:** the exhaustion message is now `{worker} database
startup failed after …`. For storage-snapshot that reads
`storage_snapshot database startup failed …` instead of `storage
snapshot database startup failed …`. Nothing in this repo matches on
that string.
- **Session-setup failures:** SQLx retries a failed `after_connect` hook
(writer floor guard, session timeouts, isolation assertion) until the
acquire deadline. Those failures therefore surface as `timeout`, are
retried, and fail closed after at most 97s instead of immediately.

Relay pool defaults are unchanged. The deletion CLI's operator commands
(`list`, `approve`, …) use the same connector. They normally run inside
the warm relay container, where the first attempt succeeds.

**What got simpler:** there is now one cold-start connector instead of a
`buzz-admin`-private copy that the deletion worker couldn't reach.
`storage_snapshot_startup.rs` is gone, and its unit tests moved with the
code. The two Postgres startup tests now share one harness with the
drain's tests (`postgres_storage_snapshot.rs` →
`postgres_cold_start.rs`).

### Related issue

Follow-up to #7770 (same failure, other worker) and #7827 (the drain
CronJob). No duplicate found.

### Testing

All at head `1545de7b5`:

- **GitHub CI:** green on attempt 1, including `PostgreSQL Domain /
PostgreSQL Tests`.
- **Blox:**
- fmt, `clippy --workspace --all-targets -D warnings`, and the `buzz-db`
/ `buzz-admin` / `buzz-deletion` tests pass.
- All four `postgres_cold_start` tests pass, each against a freshly
migrated database.
- Falsification: with main's `connect_store` restored, the drain retry
test fails.
- **Agent review:** two rounds. All findings are fixed or disclosed; the
error-text change is listed above.
- **Agent exercise:** real `buzz-admin deletions list` / `deletions
drain` against local Postgres 17 behind a fault proxy.
  - **5s delay:** succeeds on attempt 1 (3/3). Main fails at about 3.5s.
- **Dropped handshake, then 5s delay:** attempt 1 fails with
`UnexpectedEof`, then a 2s backoff, then attempt 2 succeeds (3/3).
- **Wrong password, missing database or malformed URL:** exit 5 after
one attempt.
- **Persistent rejection:** exit 5 after three attempts, with 2s and 5s
backoffs.
  - The deletion queue stayed empty throughout.
- **Not covered:** an approved deletion, real S3 / Pod Identity, TLS and
session-setup failures, and a live 97s stall.

---------

Signed-off-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
Co-authored-by: Elrond <28d6302a099e5225b02c4155ac4236e4912603df2ab08dbfc2f4fef08ce598c8@buzz.block.builderlab.xyz>
This commit is contained in:
Luke Tornquist
2026-10-08 10:30:38 -04:00
committed by GitHub
parent 745501962e
commit c6340a45a0
8 changed files with 297 additions and 51 deletions

View File

@@ -22,7 +22,6 @@
mod communities;
mod deletions;
mod storage_snapshot_startup;
use std::future::Future;
use std::sync::atomic::{AtomicU64, Ordering};
@@ -196,6 +195,15 @@ async fn run(cli: Cli) -> Result<i32> {
}
}
/// One session: the worker detaches its lock-owning connection, and the
/// cold-start pool opens no idle replacements while it scans S3.
fn storage_snapshot_db_config(base: DbConfig) -> DbConfig {
DbConfig {
max_connections: 1,
..base
}
}
async fn cmd_storage_snapshot(max_objects: u64) -> Result<i32> {
let max_objects_db = i64::try_from(max_objects)
.map_err(|_| anyhow::anyhow!("--max-objects must be at most {}", i64::MAX))?;
@@ -203,7 +211,11 @@ async fn cmd_storage_snapshot(max_objects: u64) -> Result<i32> {
return Err(anyhow::anyhow!("--max-objects must be greater than zero"));
}
let db = storage_snapshot_startup::connect_db().await?;
let db = Db::connect_cold_start(
storage_snapshot_db_config(db_config_from_env()),
"storage_snapshot",
)
.await?;
let mut leader = db.try_lock_storage_accounting().await?.ok_or_else(|| {
anyhow::anyhow!("another storage-snapshot worker already holds the lease")
})?;
@@ -887,6 +899,17 @@ mod storage_snapshot_tests {
use super::*;
#[test]
fn storage_snapshot_holds_a_single_database_session() {
let config = storage_snapshot_db_config(DbConfig {
max_connections: 20,
lock_timeout_ms: 123,
..DbConfig::default()
});
assert_eq!(config.max_connections, 1);
assert_eq!(config.lock_timeout_ms, 123);
}
#[tokio::test]
async fn failed_fold_never_invokes_snapshot_persistence() {
let persist_calls = Arc::new(AtomicUsize::new(0));

View File

@@ -1,4 +1,4 @@
//! Run the real command through delayed/broken PostgreSQL connections.
//! Run the real run-once workers through delayed/broken PostgreSQL connections.
//! The PostgreSQL nextest wrapper supplies a separate database per test.
use std::process::{ExitStatus, Stdio};
@@ -164,6 +164,39 @@ struct WorkerOutput {
}
async fn run_worker(database_url: &str, proxy: &Server, s3: &Server) -> WorkerOutput {
run_admin(
database_url,
proxy,
&["storage-snapshot", "--max-objects", "100"],
&[
("BUZZ_S3_ENDPOINT", format!("http://{}", s3.address)),
("BUZZ_STORAGE_SNAPSHOT_CODE_SHA", "startup-test".to_owned()),
],
)
.await
}
/// Run the scheduled deletion drain against an idle queue. Its Redis pool is
/// lazy and an idle drain never reaches S3, so neither endpoint needs to exist.
async fn run_drain(database_url: &str, proxy: &Server) -> WorkerOutput {
run_admin(
database_url,
proxy,
&["deletions", "drain", "--executor-id", "cold-start-test"],
&[
("BUZZ_S3_ENDPOINT", "http://127.0.0.1:9".to_owned()),
("REDIS_URL", "redis://127.0.0.1:9".to_owned()),
],
)
.await
}
async fn run_admin(
database_url: &str,
proxy: &Server,
args: &[&str],
env: &[(&str, String)],
) -> WorkerOutput {
let mut url = Url::parse(database_url).expect("database URL");
url.set_host(Some("127.0.0.1")).expect("proxy host");
url.set_port(Some(proxy.address.port()))
@@ -176,15 +209,14 @@ async fn run_worker(database_url: &str, proxy: &Server, s3: &Server) -> WorkerOu
let worker_binary = std::env::var_os("NEXTEST_BIN_EXE_buzz_admin")
.unwrap_or_else(|| env!("CARGO_BIN_EXE_buzz-admin").into());
let mut child = Command::new(worker_binary)
.args(["storage-snapshot", "--max-objects", "100"])
.args(args)
.env_clear()
.env("DATABASE_URL", url.as_str())
.env("BUZZ_S3_ENDPOINT", format!("http://{}", s3.address))
.env("BUZZ_S3_BUCKET", "test-bucket")
.env("BUZZ_S3_REGION", "us-east-1")
.env("BUZZ_S3_ACCESS_KEY", "test-access-key")
.env("BUZZ_S3_SECRET_KEY", "test-secret-key")
.env("BUZZ_STORAGE_SNAPSHOT_CODE_SHA", "startup-test")
.envs(env.iter().map(|(key, value)| (key, value)))
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.kill_on_drop(true)
@@ -290,3 +322,52 @@ async fn storage_snapshot_exhaustion_never_lists_s3_or_replaces_the_last_good_sn
assert_eq!(snapshot, json!({"previous": "complete"}));
assert_eq!(revision, "before");
}
#[tokio::test]
#[ignore = "requires Postgres"]
async fn deletion_drain_retries_then_connects_after_the_old_three_second_budget() {
let (url, _pool) = database().await;
let proxy = postgres_proxy(&url, 1, Duration::from_secs(5)).await;
let output = run_drain(&url, &proxy).await;
assert!(
output.status.success(),
"{}\n{}",
output.stdout,
output.stderr
);
// The rejected dial plus the successful retry. The drain's first claim
// can race SQLx's asynchronous release of the startup connection and dial
// one more session, so the count is a lower bound; the startup events
// below are what pin the retry.
assert!(proxy.requests.load(Ordering::SeqCst) >= 2);
let startup = events(&output.stderr);
assert!(startup
.iter()
.any(|event| event["event"] == "deletion_db_connect_failed"
&& event["attempt"] == 1
&& event["retry_in_ms"] == 2000));
assert!(startup
.iter()
.any(|event| event["event"] == "deletion_db_connect_completed"
&& event["attempt"] == 2
&& event["attempt_elapsed_ms"].as_u64().unwrap() >= 5000));
}
#[tokio::test]
#[ignore = "requires Postgres"]
async fn deletion_drain_exhaustion_fails_after_three_bounded_attempts() {
let (url, _pool) = database().await;
let proxy = postgres_proxy(&url, usize::MAX, Duration::ZERO).await;
let output = run_drain(&url, &proxy).await;
assert_eq!(output.status.code(), Some(5), "{}", output.stderr);
assert_eq!(proxy.requests.load(Ordering::SeqCst), 3);
let failures: Vec<_> = events(&output.stderr)
.into_iter()
.filter(|event| event["event"] == "deletion_db_connect_failed")
.collect();
assert_eq!(failures.len(), 3);
assert!(failures.last().unwrap()["retry_in_ms"].is_null());
assert!(output
.stderr
.contains("deletion database startup failed after 3 attempt(s)"));
}

View File

@@ -26,5 +26,5 @@ rand = { workspace = true }
metrics = { workspace = true }
[dev-dependencies]
tokio = { workspace = true }
tokio = { workspace = true, features = ["test-util"] }
metrics-util = { workspace = true }

View File

@@ -31,8 +31,9 @@ pub mod error;
mod test_support;
pub use runtime::{
insert_mentions, migration, replica_fence, AdmittedTx, Db, DbConfig, DbConnectionOutcome,
DbConnectionStep, DbPoolRole, DbPoolStats, DbReadinessOutcome, ReadSession,
insert_mentions, migration, replica_fence, AdmittedTx, ColdStartError, Db, DbConfig,
DbConnectionOutcome, DbConnectionStep, DbPoolRole, DbPoolStats, DbReadinessOutcome,
ReadSession,
};
/// Valid low-cardinality `(pool_role, operation)` pairs for pool-acquisition telemetry.

View File

@@ -1,39 +1,86 @@
//! Bounded cold database startup for the run-once storage accounting worker.
//! Bounded cold database startup for run-once operator workers.
//!
//! A freshly scheduled worker pod (no mesh sidecar, cold DNS) can need more
//! than the relay's three-second acquisition budget to open its first
//! connection. Workers that start, do bounded work, and exit share this
//! connector so a slow first connection is waited out and transient transport
//! failures are retried, while configuration, authentication, TLS, and
//! protocol errors during the dial still fail immediately. SQLx treats a
//! failed session-setup hook (`after_connect`) as retryable until the
//! acquire deadline, so such failures surface here as timeouts and are
//! retried within the same bounded budget.
//!
//! Startup attempts are reported as JSON lines on stderr because these
//! command-line workers do not install a tracing subscriber.
use std::future::Future;
use std::io::ErrorKind;
use std::time::Duration;
use anyhow::{Context, Result};
use buzz_db::{Db, DbConfig, DbError};
use tokio::time::{sleep, timeout, Instant};
use super::{Db, DbConfig};
use crate::DbError;
const ACQUIRE_TIMEOUT: Duration = Duration::from_secs(30);
const RETRY_DELAYS: [Duration; 2] = [Duration::from_secs(2), Duration::from_secs(5)];
/// Establish the worker's database pool before it acquires its accounting lease.
pub(super) async fn connect_db() -> Result<Db> {
let config = worker_config(crate::db_config_from_env());
connect_with_retry(|| Db::new(&config)).await
/// A run-once worker could not establish its database pool.
///
/// The message carries only a bounded classification: driver messages and
/// URLs can contain credentials. The driver error stays available as the
/// [`std::error::Error::source`].
#[derive(Debug, thiserror::Error)]
#[error(
"{worker} database startup failed after {attempts} attempt(s) and {elapsed_ms}ms ({class})"
)]
pub struct ColdStartError {
worker: &'static str,
attempts: usize,
elapsed_ms: u128,
class: &'static str,
#[source]
source: DbError,
}
fn worker_config(config: DbConfig) -> DbConfig {
impl Db {
/// Connect a run-once worker's pool with a bounded cold-start budget.
///
/// The pool keeps the caller's size and session policy, opens no idle
/// spare connections, and waits up to 30 seconds per acquisition. Startup
/// timeouts and transient transport failures are retried at most twice,
/// after two and five seconds, so startup waits at most 97 seconds.
/// `worker` prefixes the stderr startup events, for example
/// `deletion_db_connect_failed`.
///
/// Only initial connection establishment is retried. Once a caller holds
/// a session-bound lock or lease, reconnecting would lose that fence.
pub async fn connect_cold_start(
config: DbConfig,
worker: &'static str,
) -> std::result::Result<Self, ColdStartError> {
let config = cold_start_config(config);
connect_with_retry(worker, || Db::new(&config)).await
}
}
fn cold_start_config(config: DbConfig) -> DbConfig {
DbConfig {
max_connections: 1,
// The worker detaches its lock-owning session. Do not open idle
// replacements while that session scans S3 and publishes the result.
// A run-once worker only needs connections it actually uses; idle
// replacements would also contend with a slow cold start.
min_connections: 0,
acquire_timeout_secs: ACQUIRE_TIMEOUT.as_secs(),
..config
}
}
// Only initial connection establishment is retried. Once the command owns
// the advisory lock, reconnecting would lose its publication fence.
async fn connect_with_retry<T, Connect, Attempt>(mut connect: Connect) -> Result<T>
async fn connect_with_retry<T, Connect, Attempt>(
worker: &'static str,
mut connect: Connect,
) -> std::result::Result<T, ColdStartError>
where
Connect: FnMut() -> Attempt,
Attempt: Future<Output = buzz_db::Result<T>>,
Attempt: Future<Output = crate::Result<T>>,
{
let started = Instant::now();
// Three attempts of at most 30s, plus 2s and 5s backoffs: at most 97s.
@@ -42,7 +89,7 @@ where
eprintln!(
"{}",
serde_json::json!({
"event": "storage_snapshot_db_connect_started",
"event": format!("{worker}_db_connect_started"),
"stage": "db_connect",
"attempt": attempt + 1,
"timeout_ms": ACQUIRE_TIMEOUT.as_millis(),
@@ -57,7 +104,7 @@ where
eprintln!(
"{}",
serde_json::json!({
"event": "storage_snapshot_db_connect_completed",
"event": format!("{worker}_db_connect_completed"),
"stage": "db_connect",
"attempt": attempt + 1,
"attempt_elapsed_ms": attempt_started.elapsed().as_millis(),
@@ -78,7 +125,7 @@ where
eprintln!(
"{}",
serde_json::json!({
"event": "storage_snapshot_db_connect_failed",
"event": format!("{worker}_db_connect_failed"),
"stage": "db_connect",
"attempt": attempt + 1,
"attempt_elapsed_ms": attempt_started.elapsed().as_millis(),
@@ -98,12 +145,12 @@ where
match delay {
Some(delay) => sleep(delay).await,
None => {
return Err(error).with_context(|| {
format!(
"storage snapshot database startup failed after {} attempt(s) and {}ms ({class})",
attempt + 1,
started.elapsed().as_millis(),
)
return Err(ColdStartError {
worker,
attempts: attempt + 1,
elapsed_ms: started.elapsed().as_millis(),
class,
source: error,
});
}
}
@@ -128,7 +175,9 @@ fn retryable(error: &DbError) -> bool {
| ErrorKind::NotFound
| ErrorKind::Unsupported
),
// Includes authentication, TLS, URL configuration and protocol errors.
// Includes authentication, TLS, URL configuration and protocol errors
// raised while dialing. Session-setup failures arrive as
// `PoolTimedOut` (see the module docs).
_ => false,
}
}

View File

@@ -1,17 +1,21 @@
use std::borrow::Cow;
use std::cell::Cell;
use super::*;
const WORKER: &str = "test_worker";
#[test]
fn worker_pool_overrides_do_not_change_relay_defaults_or_session_policy() {
fn cold_start_overrides_do_not_change_relay_defaults_pool_size_or_session_policy() {
let defaults = DbConfig::default();
let worker = worker_config(DbConfig {
let worker = cold_start_config(DbConfig {
max_connections: 7,
lock_timeout_ms: 123,
idle_txn_timeout_ms: 456,
statement_timeout_ms: 789,
..defaults.clone()
});
assert_eq!(worker.max_connections, 1);
assert_eq!(worker.max_connections, 7);
assert_eq!(worker.min_connections, 0);
assert_eq!(worker.acquire_timeout_secs, 30);
assert_eq!(worker.lock_timeout_ms, 123);
@@ -25,7 +29,7 @@ fn worker_pool_overrides_do_not_change_relay_defaults_or_session_policy() {
#[tokio::test(start_paused = true)]
async fn cold_connection_can_exceed_the_old_three_second_budget() {
let started = Instant::now();
connect_with_retry(|| async {
connect_with_retry(WORKER, || async {
sleep(Duration::from_secs(6)).await;
Ok(())
})
@@ -38,7 +42,7 @@ async fn cold_connection_can_exceed_the_old_three_second_budget() {
async fn transient_failure_backs_off_before_a_successful_attempt() {
let attempts = Cell::new(0);
let started = Instant::now();
let result = connect_with_retry(|| {
let result = connect_with_retry(WORKER, || {
attempts.set(attempts.get() + 1);
let attempt = attempts.get();
async move {
@@ -59,7 +63,7 @@ async fn transient_failure_backs_off_before_a_successful_attempt() {
async fn retry_exhaustion_propagates_the_last_error_after_three_attempts() {
let attempts = Cell::new(0);
let started = Instant::now();
let error = connect_with_retry(|| {
let error = connect_with_retry(WORKER, || {
attempts.set(attempts.get() + 1);
async { Err::<(), _>(sqlx::Error::Io(ErrorKind::ConnectionReset.into()).into()) }
})
@@ -67,28 +71,28 @@ async fn retry_exhaustion_propagates_the_last_error_after_three_attempts() {
.expect_err("exhausted startup must fail");
assert_eq!(attempts.get(), 3);
assert_eq!(started.elapsed(), Duration::from_secs(7));
assert!(error
.to_string()
.starts_with("test_worker database startup"));
assert!(error.to_string().contains("3 attempt(s)"));
assert!(matches!(
error.downcast_ref::<DbError>(),
Some(DbError::Sqlx(sqlx::Error::Io(_)))
));
assert!(matches!(error.source, DbError::Sqlx(sqlx::Error::Io(_))));
}
#[tokio::test(start_paused = true)]
async fn hung_initialization_is_bounded_to_97_seconds_including_backoff() {
let attempts = Cell::new(0);
let started = Instant::now();
let error = connect_with_retry(|| {
let error = connect_with_retry(WORKER, || {
attempts.set(attempts.get() + 1);
std::future::pending::<buzz_db::Result<()>>()
std::future::pending::<crate::Result<()>>()
})
.await
.expect_err("hung connection setup must time out");
assert_eq!(attempts.get(), 3);
assert_eq!(started.elapsed(), Duration::from_secs(97));
assert!(matches!(
error.downcast_ref::<DbError>(),
Some(DbError::Sqlx(sqlx::Error::PoolTimedOut))
error.source,
DbError::Sqlx(sqlx::Error::PoolTimedOut)
));
}
@@ -103,7 +107,7 @@ async fn permanent_errors_fail_immediately_and_do_not_expose_connection_details(
sqlx::Error::Io(ErrorKind::PermissionDenied.into()),
] {
let mut error = Some(driver_error);
let result = connect_with_retry(|| {
let result = connect_with_retry(WORKER, || {
attempts.set(attempts.get() + 1);
let error = error.take().expect("permanent errors must not retry");
async move { Err::<(), _>(error.into()) }
@@ -115,3 +119,86 @@ async fn permanent_errors_fail_immediately_and_do_not_expose_connection_details(
assert_eq!(attempts.get(), 4);
assert_eq!(started.elapsed(), Duration::ZERO);
}
#[derive(Debug, thiserror::Error)]
#[error("sensitive server message")]
struct ServerError(&'static str);
impl sqlx::error::DatabaseError for ServerError {
fn message(&self) -> &str {
"sensitive server message"
}
fn code(&self) -> Option<Cow<'_, str>> {
Some(Cow::Borrowed(self.0))
}
fn as_error(&self) -> &(dyn std::error::Error + Send + Sync + 'static) {
self
}
fn as_error_mut(&mut self) -> &mut (dyn std::error::Error + Send + Sync + 'static) {
self
}
fn into_error(self: Box<Self>) -> Box<dyn std::error::Error + Send + Sync + 'static> {
self
}
fn kind(&self) -> sqlx::error::ErrorKind {
sqlx::error::ErrorKind::Other
}
}
#[test]
fn classifier_table_covers_every_retry_and_class_arm() {
let io = |kind: ErrorKind| DbError::Sqlx(sqlx::Error::Io(kind.into()));
let cases: Vec<(DbError, bool, &str)> = vec![
(DbError::Sqlx(sqlx::Error::PoolTimedOut), true, "timeout"),
(io(ErrorKind::ConnectionReset), true, "io"),
(io(ErrorKind::ConnectionRefused), true, "io"),
(io(ErrorKind::ConnectionAborted), true, "io"),
(io(ErrorKind::TimedOut), true, "io"),
(io(ErrorKind::UnexpectedEof), true, "io"),
(io(ErrorKind::Other), true, "io"),
(io(ErrorKind::InvalidInput), false, "io"),
(io(ErrorKind::InvalidData), false, "io"),
(io(ErrorKind::PermissionDenied), false, "io"),
(io(ErrorKind::NotFound), false, "io"),
(io(ErrorKind::Unsupported), false, "io"),
(DbError::Sqlx(sqlx::Error::Tls("x".into())), false, "tls"),
(
DbError::Sqlx(sqlx::Error::Configuration("x".into())),
false,
"configuration",
),
(
DbError::Sqlx(sqlx::Error::Protocol("x".into())),
false,
"protocol",
),
(
DbError::Sqlx(sqlx::Error::Database(Box::new(ServerError("28P01")))),
false,
"authentication",
),
(
DbError::Sqlx(sqlx::Error::Database(Box::new(ServerError("28000")))),
false,
"authentication",
),
(
DbError::Sqlx(sqlx::Error::Database(Box::new(ServerError("53300")))),
false,
"database",
),
(DbError::Sqlx(sqlx::Error::RowNotFound), false, "other"),
];
for (error, retry, class) in cases {
assert_eq!(
(retryable(&error), error_class(&error)),
(retry, class),
"{error:?}"
);
}
}

View File

@@ -1,10 +1,12 @@
mod admitted_tx;
mod cold_start;
mod connection_observability;
pub mod migration;
pub(crate) mod observability;
pub mod replica_fence;
pub use admitted_tx::AdmittedTx;
pub use cold_start::ColdStartError;
pub use connection_observability::{DbConnectionOutcome, DbConnectionStep};
pub(crate) use connection_observability::{
CONNECTION_DURATION_STEPS, CONNECTION_RAW_SERIES_PER_POD, CONNECTION_STARTED_STEPS,

View File

@@ -547,13 +547,16 @@ fn resolve_submit_host(host: Option<&str>, relay_url: Option<&str>) -> Result<St
async fn connect_store() -> Result<DeletionStore> {
let database_url = required_env("DATABASE_URL")?;
let db = Db::new(
&DbConfig {
// The scheduled drain starts in a fresh pod whose first connection can
// outlast the relay's three-second budget.
let db = Db::connect_cold_start(
DbConfig {
database_url,
max_connections: env_parse("BUZZ_DB_POOL_SIZE", 20),
..DbConfig::default()
}
.with_session_timeouts_from_env(),
"deletion",
)
.await?;
Ok(store(&db))