Widens the two provider gates so an authored `{"provider":"Postgres"}` or
`{"provider":"Oracle"}` binds that provider's own dialect instead of failing
"not available in this build":
- `SqlDriverFactoryExtensions.CreateDialect` gains a Postgres and an Oracle
arm. There is deliberately no fallback arm — a default resolving to
SqlServerDialect would construct happily and then emit T-SQL at a Postgres
or Oracle server. The rejection message now names the three supported and
the two still-reserved providers.
- `SqlDriverBrowser.DefaultDialectSelector` widens identically, so a provider
the runtime constructs is also browsable; MySql/Odbc keep resolving to null
and the caller keeps reporting them as unavailable.
Tests: the existing rejected-provider controls flip from Postgres to MySql
(factory) and Odbc (browser) so the reserved half stays falsifiable, and the
new legs assert the bound dialect TYPE rather than mere construction —
"no throw" alone would pass against a SqlServer fallback.
Doc-comment sweep (contract addition, one line each): the "v1 constructs
SqlServer only" / "reserved for P2" claims in SqlProvider, SqlDriverConfigDto,
ISqlDialect.Provider and SqlServerDialect are now false and were corrected in
the same change.
The first #516 pass deliberately left these two out, because each derives more
than options from config: Sql its ISqlDialect and resolved connection string,
FOCAS the IFocasClientFactory its Backend key selects — all injected at
construction. Adopting new options alone would poll a NEW tag set through the
OLD database/backend, and a half-applied config change is worse than a
discarded one because it looks like it worked.
Rather than accept that exclusion, this fixes the blocker. Each factory now
exposes a ParseBinding returning EVERY config-derived dependency as one value,
and the driver adopts them atomically:
- Sql: ApplyBinding takes (options, dialect, connectionString) and rebuilds
everything downstream — provider factory, Endpoint, and the SqlPollReader
that captures all three. It runs BEFORE BuildTagTable, so the tag table and
the connection it is polled over always come from the same revision. A
test-injected DbProviderFactory survives a rebind (_explicitFactory), so a
re-derived dialect cannot displace what a test passed in.
- FOCAS: options and backend move as a pair in InitializeAsync.
Re-resolving Sql's connection string on reinit is a side benefit: a rotated
credential is picked up without a process restart.
Drivers constructed directly get no rebinder and keep their constructor
binding, so every existing "{}"-passing lifecycle test is unaffected by
construction rather than by luck.
The tests pin ATOMICITY, not merely that a re-parse happened — a test checking
only options would have passed against the broken version. Confirmed by
simulating the half-fix (adopt options, skip the backend): 2 of 3 FOCAS tests
go red. Reverting Sql's rebind turns its connection-string test red. Sql also
asserts that a reinit which cannot resolve its new connection leaves the
previous binding whole rather than half-adopting.
All 12 drivers now honour a changed config in place. Sql.Tests 226, FOCAS.Tests
275 pass.
Add DriverTypeNames.Sql (+ All) as the shared source of truth, and wire the driver
into the Host: register the factory in DriverFactoryBootstrap.Register via
Driver.Sql.SqlDriverFactoryExtensions.Register(registry, loggerFactory), add the
SqlProbe (= Driver.Sql.SqlDriverProbe) probe via TryAddEnumerable, and add the
Driver.Sql project reference to the Host. Default tier A (SQL client is managed +
cross-platform, so ShouldStub needs no change).
Repoint the interim SqlDriver.DriverTypeName / SqlDriverFactoryExtensions.DriverTypeName
literals at DriverTypeNames.Sql; both still resolve to "Sql", so the AdminUI
TagConfigEditorMap/TagConfigValidator keys and the DriverTypeName-parity test stay
green. The Core guard test discovers factories from its own bin, so it also gains a
Driver.Sql project reference — that is the "registered-factory side" that lets
DriverTypeNamesGuardTests' bidirectional-parity check pass (4/4 green).
Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
SqlDriverFactoryExtensions turns a deployed DriverConfig blob into a live
SqlDriver, and SqlConnectionStringResolver resolves the authored
connectionStringRef NAME from Sql__ConnectionStrings__<ref> so credentials
never ride in a config blob (design §8.2).
Three behaviours worth naming:
- String-enum guard. JsonOptions carries JsonStringEnumConverter +
camelCase, so `provider` parses whether authored as a name or an ordinal
and always round-trips as the NAME — the systemic AdminUI defect where a
page serialised an enum numerically against a string-typed DTO.
- Config validation lands here because nothing below does it.
operationTimeout must be STRICTLY greater than commandTimeout (design
§8.3); the reader and the driver stay deliberately usable with the pair
inverted so the frozen-database tests can prove the client-side bound
fires. Non-positive timeouts / poll interval and maxConcurrentGroups < 1
are rejected too.
- Credential hygiene. The resolved connection string reaches the provider
and nothing else: messages name the ref, the environment variable, or
SqlDriver.Endpoint's credential-free server/database rendering. Both a
log-leak and an exception-leak test cover it.
DTO changes:
- Adds RawTags (List<RawTagEntry>), following the Modbus precedent — the
deploy artifact delivers a driver's tags this way and the DTO had no way
to receive them, so an authored Sql tag could never reach the driver.
- Deletes SqlProbeDto + the `probe` key. It had no consumer: SqlDriver was
specified without a background probe loop, and deliberately so — its
IHostConnectivityProbe state is a by-product of the Initialize liveness
check and of every poll, i.e. a statement about traffic that actually
happened rather than a synthetic ping. On-demand connectivity is Task
10's SqlDriverProbe. Shipping a config key that silently does nothing is
worse than not shipping it; UnmappedMemberHandling.Skip means a blob that
still carries `probe` keeps parsing.
allowWrites stays inert (SqlDriver implements no write capability) but an
authored `true` now WARNS rather than passing silently — the flag cannot do
harm, an operator who believes writes are enabled can.
Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
Joseph Doherty