Joseph Doherty
34 lines
1.4 KiB
C#
34 lines
1.4 KiB
C#
using Akka.Actor;
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using Akka.Event;
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using ZB.MOM.WW.ScadaBridge.Commons.Messages.RemoteQuery;
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namespace ZB.MOM.WW.ScadaBridge.SiteEventLogging;
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/// <summary>
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/// Akka actor bridge for <see cref="IEventLogQueryService"/>.
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/// Receives <see cref="EventLogQueryRequest"/> from the SiteCommunicationActor
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/// and returns <see cref="EventLogQueryResponse"/>.
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/// </summary>
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public class EventLogHandlerActor : ReceiveActor
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{
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private readonly ILoggingAdapter _log = Context.GetLogger();
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private readonly IEventLogQueryService _queryService;
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/// <summary>Initializes the actor and registers the <see cref="EventLogQueryRequest"/> handler.</summary>
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/// <param name="queryService">The query service that executes event log queries.</param>
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public EventLogHandlerActor(IEventLogQueryService queryService)
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{
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_queryService = queryService;
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// The query is synchronous SQLite I/O (a keyword search can scan millions of
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// rows), so run it on the thread pool and pipe the reply back rather than pinning
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// an Akka dispatcher thread (review 2026-10-21 02/P1). ExecuteQuery never throws —
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// it returns Success:false — so no failure mapper is needed beyond the safety net.
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Receive<EventLogQueryRequest>(msg =>
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{
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var service = _queryService;
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Task.Run(() => service.ExecuteQuery(msg)).PipeTo(Sender);
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});
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}
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}
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