cbcaf6593a
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>
45 lines
2.2 KiB
C#
45 lines
2.2 KiB
C#
namespace ZB.MOM.WW.OtOpcUa.Configuration.Entities;
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/// <summary>
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/// Runtime resilience counters the CapabilityInvoker + MemoryTracking + MemoryRecycle
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/// surfaces for each <c>(DriverInstanceId, HostName)</c> pair. Separate from
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/// <see cref="DriverHostStatus"/> (which owns per-host <i>connectivity</i> state) so a
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/// host that's Running but has tripped its breaker or is approaching its memory ceiling
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/// shows up distinctly on Admin <c>/hosts</c>.
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/// </summary>
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/// <remarks>
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/// Per <c>docs/v2/implementation/phase-6-1-resilience-and-observability.md</c> §Stream E.1.
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/// The Admin UI left-joins this table on DriverHostStatus for display; rows are written
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/// by the runtime via a HostedService that samples the tracker at a configurable
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/// interval (default 5 s) — writes are non-critical, a missed sample is tolerated.
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/// </remarks>
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public sealed class DriverInstanceResilienceStatus
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{
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public required string DriverInstanceId { get; set; }
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public required string HostName { get; set; }
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/// <summary>Most recent time the circuit breaker for this (instance, host) opened; null if never.</summary>
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public DateTime? LastCircuitBreakerOpenUtc { get; set; }
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/// <summary>Rolling count of consecutive Polly pipeline failures for this (instance, host).</summary>
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public int ConsecutiveFailures { get; set; }
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/// <summary>Current Polly bulkhead depth (in-flight calls) for this (instance, host).</summary>
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public int CurrentBulkheadDepth { get; set; }
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/// <summary>Most recent process recycle time (Tier C only; null for in-process tiers).</summary>
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public DateTime? LastRecycleUtc { get; set; }
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/// <summary>
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/// Post-init memory baseline captured by <c>MemoryTracking</c> (median of first
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/// BaselineWindow samples). Zero while still warming up.
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/// </summary>
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public long BaselineFootprintBytes { get; set; }
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/// <summary>Most recent footprint sample the tracker saw (steady-state read).</summary>
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public long CurrentFootprintBytes { get; set; }
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/// <summary>Row last-write timestamp — advances on every sampling tick.</summary>
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public DateTime LastSampledUtc { get; set; }
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}
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