fix(historian): SQL quality contract, long-name refusal, info-bit masking, AtTime-after-now, bootstrap hardening

- I-1: an Empty sample is always Bad. The writer stores a non-Bad NaN/Inf as
  Empty+BadOutOfRange and any other non-Bad Empty as BadNoData; the updater
  refuses a non-Bad Empty with BadInvalidArgument; reads clamp a legacy
  non-Bad Empty row to BadNoData (Raw and AtTime).
- Tag/source names over 400 chars are refused, never truncated: writer
  per-tag failure, updater BadInvalidArgument, reads not-found, events none.
- HistorianInfoBits masks the historian bits before setting one.
- AtTime past now, stepped from the last sample => UncertainDataSubNormal.
- Bootstrapper: logger, 5 s negative cache, ClearPool + Warning when
  sp_releaseapplock fails.
- Provider builds its shared state lazily (an invalid Schema no longer
  throws at Resolve); Kinds is a FrozenSet; Gateway reuses the recorder's
  DefaultSupportedKinds.
- Cleanup: SqlHistorianDataTypes in its own file (updater dup removed),
  dead Invalidate and unused status consts deleted, named severity masks,
  alarm writer brace.

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
This commit is contained in:
Joseph Doherty
2026-10-09 14:16:31 -04:00
parent fc57eefca6
commit 821763a09d
20 changed files with 611 additions and 126 deletions
@@ -9,18 +9,32 @@ public sealed class ValueWriterPrepareTests
private static readonly DateTime T = new(2026, 10, 9, 1, 2, 3, DateTimeKind.Utc);
[Fact]
public void Non_finite_doubles_become_Empty_keeping_status()
public void Non_finite_doubles_become_Empty_and_are_forced_Bad()
{
const uint status = 0x40000000u;
const uint uncertain = 0x40000000u;
const uint badNoCommunication = 0x80310000u;
var rows = SqlServerHistorianValueWriter.Prepare(
[
new(T, HistorianValue.FromDouble(double.NaN), status),
new(T, HistorianValue.FromDouble(double.NaN), uncertain),
new(T.AddTicks(1), HistorianValue.FromDouble(double.PositiveInfinity), 0),
new(T.AddTicks(2), HistorianValue.FromDouble(double.NegativeInfinity), 0),
new(T.AddTicks(2), HistorianValue.FromDouble(double.NegativeInfinity), badNoCommunication),
new(T.AddTicks(3), HistorianValue.FromDouble(1.5), 0),
], () => T);
rows.Select(r => r.Value.Kind).ShouldBe([HistorianValueKind.Empty, HistorianValueKind.Empty, HistorianValueKind.Empty, HistorianValueKind.Double]);
rows[0].StatusCode.ShouldBe(status);
rows.Select(r => r.StatusCode).ShouldBe([SqlHistorianStatusCodes.BadOutOfRange, SqlHistorianStatusCodes.BadOutOfRange,
badNoCommunication, 0u]);
}
[Fact]
public void A_non_bad_Empty_is_stored_BadNoData_and_a_bad_Empty_keeps_its_code()
{
var rows = SqlServerHistorianValueWriter.Prepare(
[
new(T, HistorianValue.Empty, 0),
new(T.AddTicks(1), HistorianValue.Empty, 0x40A40000u),
new(T.AddTicks(2), HistorianValue.Empty, 0x80310000u),
], () => T);
rows.Select(r => r.StatusCode).ShouldBe([SqlHistorianStatusCodes.BadNoData, SqlHistorianStatusCodes.BadNoData, 0x80310000u]);
}
[Fact]