d38356efdb
Host infrastructure (WP-11–17): - StartupValidator with 19 validation rules - /health/ready endpoint with DB + Akka health checks - Akka.NET bootstrap via AkkaHostedService (HOCON config, cluster, remoting, SBR) - Serilog with SiteId/NodeHostname/NodeRole enrichment - DeadLetterMonitorActor with count tracking - CoordinatedShutdown wiring (no Environment.Exit) - Windows Service support (UseWindowsService) Central UI (WP-18–21): - Blazor Server shell with Bootstrap 5, role-aware NavMenu - Login/logout flow (LDAP auth → JWT → HTTP-only cookie) - CookieAuthenticationStateProvider with idle timeout - LDAP group mapping CRUD page (Admin role) - Route guards with Authorize attributes per role - SignalR reconnection overlay for failover Integration tests (WP-22): - Startup validation, auth flow, audit transactions, readiness gating 186 tests pass (1 skipped: LDAP integration), zero warnings.
54 lines
1.4 KiB
C#
54 lines
1.4 KiB
C#
using Akka.Actor;
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using Akka.Event;
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using Microsoft.Extensions.Logging;
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namespace ScadaLink.Host.Actors;
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/// <summary>
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/// Subscribes to Akka.NET dead letter events, logs them, and tracks count
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/// for health monitoring integration.
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/// </summary>
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public class DeadLetterMonitorActor : ReceiveActor
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{
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private long _deadLetterCount;
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public DeadLetterMonitorActor(ILogger<DeadLetterMonitorActor> logger)
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{
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Receive<DeadLetter>(dl =>
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{
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_deadLetterCount++;
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logger.LogWarning(
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"Dead letter: {MessageType} from {Sender} to {Recipient}",
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dl.Message.GetType().Name,
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dl.Sender,
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dl.Recipient);
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});
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Receive<GetDeadLetterCount>(_ => Sender.Tell(new DeadLetterCountResponse(_deadLetterCount)));
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}
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protected override void PreStart()
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{
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Context.System.EventStream.Subscribe(Self, typeof(DeadLetter));
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}
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protected override void PostStop()
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{
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Context.System.EventStream.Unsubscribe(Self, typeof(DeadLetter));
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}
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}
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/// <summary>
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/// Message to request the current dead letter count.
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/// </summary>
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public sealed class GetDeadLetterCount
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{
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public static readonly GetDeadLetterCount Instance = new();
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private GetDeadLetterCount() { }
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}
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/// <summary>
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/// Response containing the current dead letter count.
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/// </summary>
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public sealed record DeadLetterCountResponse(long Count);
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