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Load WAL checkpointer outside Zeitwerk reload; harden fork stop

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Keep the module under lib/rails_ext, use before_worker_boot, shorten the
SQLite busy timeout under stop's join, and PASSIVE-checkpoint on exit for
short-lived writers.

Co-authored-by: Thomas Klemm <github@tklemm.eu>
This commit is contained in:
Cursor Agent
2026-10-07 19:05:44 +00:00
parent 61631ea5f9
commit 8704baa860
4 changed files with 38 additions and 4 deletions
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test/lib/sqlite_wal_checkpoint_test.rb
+18
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@@ -35,6 +35,24 @@ class SqliteWalCheckpointTest < ActiveSupport::TestCase
assert_empty checkpoint_threads
end
test "stop before start again mimics a fork-safe worker boot" do
db_path = build_wal_database(rows: 10)
SqliteWalCheckpoint.database_path_override = db_path
first = SqliteWalCheckpoint.start(interval: 0.05, enabled: true)
wait_until { first.name == "sqlite-wal-checkpoint" }
SqliteWalCheckpoint.stop
assert_not first.alive?
second = SqliteWalCheckpoint.start(interval: 0.05, enabled: true)
wait_until { second.name == "sqlite-wal-checkpoint" }
assert second.alive?
SqliteWalCheckpoint.stop
assert_not second.alive?
assert_equal :checkpointed, SqliteWalCheckpoint.tick
end
test "tick checkpoints through the elected lock holder" do
db_path = build_wal_database(rows: 50)
SqliteWalCheckpoint.database_path_override = db_path