Joseph Doherty
63 lines
2.4 KiB
C#
63 lines
2.4 KiB
C#
using Akka.Actor;
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using Akka.Cluster.Tools.PublishSubscribe;
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using ZB.MOM.WW.OtOpcUa.Commons.Messages.Drivers;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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using ZB.MOM.WW.OtOpcUa.Runtime.Telemetry;
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namespace ZB.MOM.WW.OtOpcUa.Runtime.Drivers;
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/// <summary>
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/// Forwards <see cref="DriverHealth"/> transitions to the cluster-wide
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/// <c>driver-health</c> DistributedPubSub topic. Consumed by the AdminUI
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/// <c>DriverStatusSignalRBridge</c>.
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/// </summary>
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public sealed class AkkaDriverHealthPublisher : IDriverHealthPublisher
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{
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/// <summary>The DistributedPubSub topic name for driver-health snapshots — single source
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/// of truth on the message contract itself.</summary>
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public const string TopicName = DriverHealthChanged.TopicName;
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private readonly ActorSystem _system;
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private readonly ITelemetryLocalHub _hub;
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/// <summary>Initializes a new instance of <see cref="AkkaDriverHealthPublisher"/>.</summary>
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/// <param name="system">The Akka actor system used to resolve the DPS mediator.</param>
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/// <param name="hub">The node-local live-telemetry hub each snapshot is also emitted into (Phase 5).</param>
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public AkkaDriverHealthPublisher(ActorSystem system, ITelemetryLocalHub hub)
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{
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_system = system;
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_hub = hub;
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}
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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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DateTime? rediscoveryNeededUtc = null,
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string? rediscoveryReason = null,
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IReadOnlyList<HostConnectivityStatus>? hostStatuses = null,
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SkippedTagReport? skippedTags = null,
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IReadOnlyDictionary<string, string>? diagnostics = null)
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{
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var msg = new DriverHealthChanged(
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clusterId,
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driverInstanceId,
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health.State.ToString(),
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health.LastSuccessfulRead,
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health.LastError,
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errorCount5Min,
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DateTime.UtcNow,
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rediscoveryNeededUtc,
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rediscoveryReason,
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hostStatuses,
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skippedTags,
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diagnostics);
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DistributedPubSub.Get(_system).Mediator.Tell(new Publish(TopicName, msg));
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// Phase 5: fan the same snapshot into the node-local live-telemetry hub (no-op until a gRPC
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// client subscribes). The DPS publish above is unchanged — the hub is a strictly additive tap.
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_hub.Emit(new TelemetryItem.Health(msg));
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}
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}
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