Backup, restore and the demo reset each handled the SQLite file
themselves: backup.impl closed and reinitialized the connection, built
MaintenanceRepository with new, and assumed the database was
data/travel.db. That tied the whole chain to one local file and hid two
bugs.
They now go through DATABASE_BACKUP, a port declared in the shared
database kernel (snapshot, verify, keep a copy before a restore, replace).
SqliteDatabaseBackup implements it with what the code did before:
VACUUM INTO for a consistent copy, and a close, copy, sidecar drop,
rename and reopen through DatabaseLifecycle for a restore. BackupService
injects it and hands it to backup.impl. The demo reset and the baseline
save use the same port; the first baseline is saved by DemoResetJob once
the app is up, because the boot-time seed runs before anything can be
injected. Another engine can plug in a logical dump behind the port.
Fixes on the way:
- The backup and the restore ignored TREK_DB_FILE. The backup looked for
data/travel.db and, with the database elsewhere, silently left it out
of the archive; the restore wrote data/travel.db and never replaced
the live database. Both now use DatabaseLifecycle.file, the path the
connection runs on, and the pre-restore copy sits next to it.
- A failed VACUUM INTO fell back to archiving the live WAL-mode file
without a word, the torn copy the snapshot exists to prevent. The
backup now fails: nothing is archived or committed, the existing
backups are untouched, a partial snapshot is removed, and the log says
why. A missing database file and a failed checkpoint are logged too.
db/database.ts opened the connection as a side effect of being imported,
so the moment anything reached it the database was open. index.ts had to
defer loading the app until a first-boot restore was done, and nothing
in the container decided when the connection opened or closed.
The module now opens the connection on first use and opens nothing at
import. A connection closed on purpose (a restore, the shutdown) stays
closed until it is reopened, as before. The new DatabaseLifecycle
provider owns the decisions: buildApp() opens through it, which also
binds the ORM to later swaps (the hook attachOrm used to register) and
runs the schema bootstrap in the same order as before, and the shutdown
closes through it. Its file property is the one resolved database path.
The module keeps every export, so the test suites that replace it with
vi.mock keep working; buildDbMock gains the new openDb.
Maurice