Joseph Doherty
4203b84d51
- IDriverHealthPublisher in Core.Abstractions + NullDriverHealthPublisher no-op for tests/dev-stub paths. - AkkaDriverHealthPublisher in Runtime forwards to the cluster-wide `driver-health` DPS topic. - DriverInstanceActor instrumented to publish snapshots on every observable state change + a periodic 30s heartbeat so the AdminUI snapshot store warms up for newly-joined SignalR clients. - Sliding 5-minute Faulted-count tracked per actor via Queue<DateTime>. - DriverHostActor.SpawnChild threads clusterId (_localNode.Value) and the health publisher down to every DriverInstanceActor child. - ServiceCollectionExtensions.AddOtOpcUaRuntime registers AkkaDriverHealthPublisher as IDriverHealthPublisher singleton.
40 lines
1.3 KiB
C#
40 lines
1.3 KiB
C#
namespace ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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/// <summary>
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/// Sink for driver-health state-change notifications. The runtime DI wires the
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/// Akka-DistributedPubSub-backed implementation; tests and dev-stub paths use
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/// <see cref="NullDriverHealthPublisher"/> to opt out without changing call sites.
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/// </summary>
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public interface IDriverHealthPublisher
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{
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/// <summary>
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/// Publishes a health snapshot for one driver instance. Implementations must be
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/// non-blocking and tolerant of being called from any thread.
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/// </summary>
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void Publish(
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string clusterId,
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string driverInstanceId,
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DriverHealth health,
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int errorCount5Min);
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}
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/// <summary>
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/// Drop-in no-op for tests and dev-stub paths. Production wires the Akka-backed
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/// implementation in the Runtime project.
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/// </summary>
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public sealed class NullDriverHealthPublisher : IDriverHealthPublisher
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{
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/// <summary>Singleton instance.</summary>
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public static readonly NullDriverHealthPublisher Instance = new();
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private NullDriverHealthPublisher() { }
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/// <inheritdoc />
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public void Publish(
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string clusterId,
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string driverInstanceId,
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DriverHealth health,
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int errorCount5Min)
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{ /* no-op */ }
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}
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