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Phase 6.1 Stream E (data layer) — DriverInstanceResilienceStatus entity + DriverResilienceStatusTracker + EF migration

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Ships the data + runtime layer of Stream E. The SignalR hub and Blazor /hosts
page refresh (E.2-E.3) are follow-up work paired with the visual-compliance
review per Phase 6.4 patterns — documented as a deferred follow-up below.

Configuration:
- New entity DriverInstanceResilienceStatus with:
  DriverInstanceId, HostName (composite PK),
  LastCircuitBreakerOpenUtc, ConsecutiveFailures, CurrentBulkheadDepth,
  LastRecycleUtc, BaselineFootprintBytes, CurrentFootprintBytes,
  LastSampledUtc.
- Separate from DriverHostStatus (per-host connectivity view) so a Running
  host that has tripped its breaker or is nearing its memory ceiling shows up
  distinctly on Admin /hosts. Admin page left-joins both for display.
- OtOpcUaConfigDbContext + Fluent-API config + IX_DriverResilience_LastSampled
  index for the stale-sample filter query.
- EF migration: 20260419124034_AddDriverInstanceResilienceStatus.

Core.Resilience:
- DriverResilienceStatusTracker — process-singleton in-memory tracker keyed on
  (DriverInstanceId, HostName). CapabilityInvoker + MemoryTracking +
  MemoryRecycle callers record failure/success/breaker-open/recycle/footprint
  events; a HostedService (Stream E.2 follow-up) samples this tracker every
  5 s and persists to the DB. Pure in-memory keeps tests fast + the core
  free of EF/SQL dependencies.

Tests:
- DriverResilienceStatusTrackerTests (9 new, all pass): tryget-before-write
  returns null; failures accumulate; success resets; breaker/recycle/footprint
  fields populate; per-host isolation; snapshot returns all pairs; concurrent
  writes don't lose counts.
- SchemaComplianceTests: expected-tables list updated to include the new
  DriverInstanceResilienceStatus table.

Full solution dotnet test: 1042 passing (baseline 906, +136 for Phase 6.1 so
far across Streams A/B/C/D/E.1). Pre-existing Client.CLI Subscribe flake
unchanged.

Deferred to follow-up PR (E.2/E.3):
- ResilienceStatusPublisher HostedService that samples DriverResilienceStatusTracker
  every 5 s + upserts DriverInstanceResilienceStatus rows.
- Admin FleetStatusHub SignalR hub pushing LastCircuitBreakerOpenUtc /
  CurrentBulkheadDepth / LastRecycleUtc on change.
- Admin /hosts Blazor column additions (red badge when
  ConsecutiveFailures > breakerThreshold / 2). Visual-compliance reviewer
  signoff alongside Phase 6.4 admin-ui patterns.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-04-19 08:47:43 -04:00
parent 8d81715079
commit cbcaf6593a
8 changed files with 1650 additions and 0 deletions
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19
src/ZB.MOM.WW.OtOpcUa.Configuration/OtOpcUaConfigDbContext.cs
View File

@@ -28,6 +28,7 @@ public sealed class OtOpcUaConfigDbContext(DbContextOptions<OtOpcUaConfigDbConte
public DbSet<ConfigAuditLog> ConfigAuditLogs => Set<ConfigAuditLog>();
public DbSet<ExternalIdReservation> ExternalIdReservations => Set<ExternalIdReservation>();
public DbSet<DriverHostStatus> DriverHostStatuses => Set<DriverHostStatus>();
public DbSet<DriverInstanceResilienceStatus> DriverInstanceResilienceStatuses => Set<DriverInstanceResilienceStatus>();
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
@@ -49,6 +50,7 @@ public sealed class OtOpcUaConfigDbContext(DbContextOptions<OtOpcUaConfigDbConte
ConfigureConfigAuditLog(modelBuilder);
ConfigureExternalIdReservation(modelBuilder);
ConfigureDriverHostStatus(modelBuilder);
ConfigureDriverInstanceResilienceStatus(modelBuilder);
}
private static void ConfigureServerCluster(ModelBuilder modelBuilder)
@@ -512,4 +514,21 @@ public sealed class OtOpcUaConfigDbContext(DbContextOptions<OtOpcUaConfigDbConte
e.HasIndex(x => x.LastSeenUtc).HasDatabaseName("IX_DriverHostStatus_LastSeen");
});
}
private static void ConfigureDriverInstanceResilienceStatus(ModelBuilder modelBuilder)
{
modelBuilder.Entity<DriverInstanceResilienceStatus>(e =>
{
e.ToTable("DriverInstanceResilienceStatus");
e.HasKey(x => new { x.DriverInstanceId, x.HostName });
e.Property(x => x.DriverInstanceId).HasMaxLength(64);
e.Property(x => x.HostName).HasMaxLength(256);
e.Property(x => x.LastCircuitBreakerOpenUtc).HasColumnType("datetime2(3)");
e.Property(x => x.LastRecycleUtc).HasColumnType("datetime2(3)");
e.Property(x => x.LastSampledUtc).HasColumnType("datetime2(3)");
// LastSampledUtc drives the Admin UI's stale-sample filter same way DriverHostStatus's
// LastSeenUtc index does for connectivity rows.
e.HasIndex(x => x.LastSampledUtc).HasDatabaseName("IX_DriverResilience_LastSampled");
});
}
}