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Author SHA1 Message Date
Alexa d0d26c9821 fix: wait for the bootstrap lock without a command timeout; safe unlock
From the local CodeRabbit review:
- A replica waiting for the lock used the default 30 s command timeout and
  failed to boot while another replica seeded a fresh database. Wait with
  no timeout, logging that it is waiting.
- An unlock failure in the finally (e.g. the connection already broken)
  replaced the real bootstrap error and skipped closing the connection.
  Log it instead, and always close.
2026-10-25 13:52:20 +02:00
Alexa bb22675a91 fix: hold the Postgres bootstrap lock across schema creation and seeding
Booting several replicas against one fresh Postgres database left all but
one dead on startup: the advisory lock only covered EnsureCreated, so the
seeders (system account, rooms, playlists, store, ...) raced and hit
duplicate keys. Take a session-level advisory lock for the whole bootstrap
and release it explicitly (pooled connections would otherwise keep it).
The upgrades and seeds both providers run move into
RunUpgradesAndSeedsAsync.
2026-10-25 13:01:43 +02:00
Alexa c1000c82aa fix: let EF own the Postgres bootstrap transaction (EF Core 10)
EF Core 10 runs EnsureCreated through the migration executor, which begins
its own transaction unless EF already has one. The bootstrap held the
advisory lock in a transaction begun on the raw connection, invisible to
EF, so a fresh Postgres database failed at startup with "A transaction is
already in progress". Begin it through db.Database and take the lock with
ExecuteSqlRaw so EnsureCreated runs inside it.
2026-10-25 13:00:16 +02:00
3 changed files with 114 additions and 87 deletions
+101 -52
View File
@@ -15,9 +15,9 @@ namespace DorkNet.Server.Startup;
/// <item>SQLite — <c>Database.Migrate()</c> after
/// <see cref="BaselineExistingSchemaIfNeeded"/> reconciles any legacy
/// migration-history state.</item>
/// <item>Postgres — <c>EnsureCreated</c> behind a transaction-scoped
/// advisory lock so concurrent replica boots don't race on
/// <c>CREATE TABLE</c>. Connect retries cover the
/// <item>Postgres — <c>EnsureCreated</c>, with the whole bootstrap
/// (schema and seeds) behind a session advisory lock so concurrent
/// replica boots take turns instead of racing. Connect retries cover the
/// container-orchestrated boot window where Postgres DNS isn't
/// resolvable yet.</item>
/// </list>
@@ -40,61 +40,110 @@ public static class DatabaseBootstrap
await ConfigureSqliteForLocalConcurrencyAsync(db);
BaselineExistingSchemaIfNeeded(db);
db.Database.Migrate();
await RunUpgradesAndSeedsAsync(app, scope, db);
return;
}
else
// Postgres path: schema generated from the EF Core model via
// EnsureCreated, then the same upgrades and seeds as SQLite. The
// whole bootstrap holds a session-level advisory lock, so replicas
// booting against one database take turns: the first creates the
// schema and seeds, the rest find everything in place. Holding it
// only around EnsureCreated left the seeders racing (duplicate keys
// on a fresh database).
//
// Lock key 0x444F524B (ascii "DORK") is hard-coded; it just needs
// to be the same int64 across replicas and not collide with
// anything else in the database. It is released in the finally
// below, and Postgres drops it if the replica's connection dies, so
// a crashed replica can't wedge the next boot.
var conn = db.Database.GetDbConnection();
// Retry initial Postgres connect — on container-orchestrated boots
// (Coolify, docker-compose) the Postgres service's DNS often isn't
// resolvable yet when this app starts, surfacing as SocketException
// errno=11 EAGAIN from Npgsql's Dns.GetHostEntryOrAddressesCore.
// Postgres itself can also be up-but-not-accepting-connections for
// a few seconds while it replays WAL. 15 attempts × ~2s backoff
// covers the typical 5-30s warmup window without looping forever
// on a permanently broken config.
var connectLogger = app.Services.GetRequiredService<ILoggerFactory>()
.CreateLogger("DorkNet.Server.Bootstrap");
for (var attempt = 1; ; attempt++)
{
// Postgres path: schema generated from the EF Core model via
// EnsureCreated. Wrapped in a transaction-scoped advisory lock
// so concurrent replicas booting against the same database
// don't race on CREATE TABLE — only the first replica to take
// the lock runs EnsureCreated, the rest see "schema already
// exists" and proceed.
//
// Lock key 0x444F524B (ascii "DORK") is hard-coded; it just
// needs to be the same int64 across replicas and not collide
// with anything else in the database. pg_advisory_xact_lock
// releases automatically on COMMIT, so a crashed replica can't
// wedge the next boot.
var conn = db.Database.GetDbConnection();
// Retry initial Postgres connect — on container-orchestrated boots
// (Coolify, docker-compose) the Postgres service's DNS often isn't
// resolvable yet when this app starts, surfacing as SocketException
// errno=11 EAGAIN from Npgsql's Dns.GetHostEntryOrAddressesCore.
// Postgres itself can also be up-but-not-accepting-connections for
// a few seconds while it replays WAL. 15 attempts × ~2s backoff
// covers the typical 5-30s warmup window without looping forever
// on a permanently broken config.
var connectLogger = app.Services.GetRequiredService<ILoggerFactory>()
.CreateLogger("DorkNet.Server.Bootstrap");
for (var attempt = 1; ; attempt++)
try { await conn.OpenAsync(); break; }
catch (Exception ex) when (attempt < 15 &&
(ex is System.Net.Sockets.SocketException
|| ex is Npgsql.NpgsqlException
|| ex is System.Data.Common.DbException))
{
try { await conn.OpenAsync(); break; }
catch (Exception ex) when (attempt < 15 &&
(ex is System.Net.Sockets.SocketException
|| ex is Npgsql.NpgsqlException
|| ex is System.Data.Common.DbException))
{
var delay = TimeSpan.FromSeconds(Math.Min(attempt, 5));
connectLogger.LogWarning(
"[bootstrap] Postgres connect attempt {Attempt}/15 failed ({Type}: {Message}); retrying in {Delay}s",
attempt, ex.GetType().Name, ex.Message, delay.TotalSeconds);
await Task.Delay(delay);
}
var delay = TimeSpan.FromSeconds(Math.Min(attempt, 5));
connectLogger.LogWarning(
"[bootstrap] Postgres connect attempt {Attempt}/15 failed ({Type}: {Message}); retrying in {Delay}s",
attempt, ex.GetType().Name, ex.Message, delay.TotalSeconds);
await Task.Delay(delay);
}
await using var tx = await conn.BeginTransactionAsync();
await using (var lockCmd = conn.CreateCommand())
{
lockCmd.Transaction = tx;
lockCmd.CommandText = "SELECT pg_advisory_xact_lock(1146246987);";
await lockCmd.ExecuteNonQueryAsync();
}
db.Database.EnsureCreated();
await tx.CommitAsync();
await conn.CloseAsync();
}
// The connection stays open until the finally, so every step below
// (they all share this scope's DbContext) runs on the session that
// holds the lock. Waiting for it has no command timeout: another
// replica may be seeding a fresh database (thumbnail downloads
// included) for well over the default 30 s.
connectLogger.LogInformation("[bootstrap] waiting for the database bootstrap lock");
var previousTimeout = db.Database.GetCommandTimeout();
db.Database.SetCommandTimeout(0);
try
{
await db.Database.ExecuteSqlRawAsync("SELECT pg_advisory_lock(1146246987);");
}
finally
{
db.Database.SetCommandTimeout(previousTimeout);
}
connectLogger.LogInformation("[bootstrap] holding the database bootstrap lock");
try
{
// Begin the transaction through EF, not on the raw connection:
// EnsureCreated runs its commands through the migration executor,
// which starts its own transaction unless EF already has one, and
// fails on a fresh database with "A transaction is already in
// progress" when the open one is invisible to it.
await using (var tx = await db.Database.BeginTransactionAsync())
{
db.Database.EnsureCreated();
await tx.CommitAsync();
}
await RunUpgradesAndSeedsAsync(app, scope, db);
}
finally
{
// Explicit: Npgsql pools connections, so closing alone would not
// end the session that holds the lock. If the connection is
// already broken the unlock fails too; that must not replace the
// real bootstrap error, and the connection still gets closed
// (Postgres then drops the lock with the session).
try
{
await db.Database.ExecuteSqlRawAsync("SELECT pg_advisory_unlock(1146246987);");
}
catch (Exception ex)
{
connectLogger.LogWarning(ex, "[bootstrap] releasing the database bootstrap lock failed");
}
finally
{
await conn.CloseAsync();
}
}
}
/// <summary>The idempotent post-schema sequence both providers run:
/// column/table upgrades, system account and backfills, legacy data
/// transforms, canonical rooms and the per-feature seeders. Flips the
/// <c>/healthz</c> readiness flag at the end.</summary>
private static async Task RunUpgradesAndSeedsAsync(WebApplication app, IServiceScope scope, DorkNetDbContext db)
{
// Signup-code + pending-device tables. These post-date the
// consolidated Initial migration, and the Postgres path is
// EnsureCreated-only (no migration replay), so neither provider
Vendored
+10 -21
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@@ -9,9 +9,8 @@
// from the agent's environment (ARCHIVE_PC_REPO / ARCHIVE_QUEST_REPO), each
// overridable per run. A build is picked by snapshot tags.
//
// A push builds only the platforms whose client code changed (never for
// docs or CI-only changes). A manual run picks the platforms with PLATFORMS.
// See ci/jenkins/README.md.
// On a push, only the platforms whose code changed are rebuilt. A manual run
// picks the platforms with PLATFORMS. See ci/jenkins/README.md.
//
// Finished builds are renamed for players and published to the downloads bucket
// (ci/downloads) unless PUBLISH_DOWNLOADS is off. The build scripts keep their
@@ -77,15 +76,10 @@ pipeline {
for (cs in currentBuild.changeSets) {
for (entry in cs.items) changed.addAll(entry.affectedPaths)
}
// Only client-facing changes rebuild (and so republish) a
// platform; Markdown (.md, .markdown) doesn't count. The job's Git path filter
// uses the same paths, so other pushes don't start a run at all.
// A CI-only change (Jenkinsfile, ci/) takes a manual run.
def touches = { prefixes ->
changed.any { p -> !(p.toLowerCase() ==~ /.*\.(md|markdown)/) && prefixes.any { p.startsWith(it) } }
}
buildPc = touches(['DorkNet.ClientMod/', 'tools/build_pc.py'])
buildQuest = touches(['DorkNet.Quest/'])
def touches = { prefixes -> changed.any { p -> prefixes.any { p.startsWith(it) } } }
def common = ['Jenkinsfile', 'ci/jenkins/']
buildPc = touches(common + ['DorkNet.ClientMod/', 'tools/build_pc.py'])
buildQuest = touches(common + ['DorkNet.Quest/'])
echo "Push build; ${changed.size()} changed file(s)"
} else {
buildPc = params.PLATFORMS in ['both', 'pc']
@@ -226,15 +220,10 @@ pipeline {
archiveArtifacts artifacts: 'out/downloads/**', allowEmptyArchive: true, fingerprint: true
}
cleanup {
// Runs after archiving. Drops the build output and scratch (several
// GB) but keeps the Git checkout: the job's path filter compares
// pushes against it, and without a workspace Jenkins treats every
// push as a change and starts a run. The restic cache and restored
// stock builds live outside the workspace ($DORKNET_CACHE).
cleanWs(deleteDirs: true, notFailBuild: true, patterns: [
[pattern: 'out/**', type: 'INCLUDE'],
[pattern: 'quest-work/**', type: 'INCLUDE'],
])
// Runs after archiving. Keeps the restic cache and restored stock
// builds ($DORKNET_CACHE on the agent, outside the workspace); drops
// the workspace's build output and scratch.
cleanWs(deleteDirs: true, notFailBuild: true)
}
}
}
+3 -14
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@@ -60,21 +60,10 @@ Resolve a table for another build locally with `build.py build --dump-cs`.
## Triggers
- **Push** to the branch (GitHub webhook) builds only for client-facing
changes, and only the platform they touch:
- `DorkNet.ClientMod/` and `tools/build_pc.py` rebuild PC;
- **Push** to the branch (GitHub webhook) rebuilds only what changed:
- `DorkNet.ClientMod/` and the PC scripts rebuild PC;
- `DorkNet.Quest/` rebuilds Quest;
- Markdown files (`.md`, `.markdown`) never count; server, docs and CI-only pushes (including
the `Jenkinsfile` and `ci/`) build nothing. Run those manually.
Set the same filter on the job so other pushes don't start a run at all:
under the job's **Git** source, add **Additional Behaviours → Polling
ignores commits in certain paths** with included regions
`DorkNet[.]ClientMod/.*`, `DorkNet[.]Quest/.*`, `tools/build_pc[.]py` (one
per line) and excluded region `.*[.](md|markdown)`. The filter compares against the
last build's checkout, so the pipeline keeps it and deletes only `out/`
and its scratch folders after each run; without a checkout, Jenkins treats
every push as a change.
- `Jenkinsfile` and `ci/jenkins/` rebuild both.
- **Build with Parameters** runs a manual build:
- `PLATFORMS` (both / pc / quest), and `PC_FULL_CLIENT` for the full PC client;
- snapshot tags, and per-run repository overrides;