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feat: replace site registration with database-driven site addressing

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Central now resolves site Akka remoting addresses from the Sites DB table
(NodeAAddress/NodeBAddress) instead of relying on runtime RegisterSite
messages. Eliminates the race condition where sites starting before central
had their registration dead-lettered. Addresses are cached in
CentralCommunicationActor with 60s periodic refresh and on-demand refresh
when sites are added/edited/deleted via UI or CLI.
This commit is contained in:
Joseph Doherty
2026-03-17 23:13:10 -04:00
parent eb8d5ca2c0
commit 9e97c1acd2
21 changed files with 1641 additions and 92 deletions
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9
src/ScadaLink.Host/Actors/AkkaHostedService.cs
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@@ -169,7 +169,7 @@ akka {{
private void RegisterCentralActors()
{
var centralCommActor = _actorSystem!.ActorOf(
Props.Create(() => new CentralCommunicationActor()),
Props.Create(() => new CentralCommunicationActor(_serviceProvider)),
"central-communication");
// Wire up the CommunicationService with the actor reference
@@ -264,13 +264,8 @@ akka {{
var siteCommActor = _actorSystem.ActorSelection("/user/site-communication");
siteCommActor.Tell(new RegisterCentralPath(_communicationOptions.CentralActorPath));
// Also register this site with Central so it knows our address
var centralSelection = _actorSystem.ActorSelection(_communicationOptions.CentralActorPath);
var localSiteCommPath = $"akka.tcp://scadalink@{_nodeOptions.NodeHostname}:{_nodeOptions.RemotingPort}/user/site-communication";
centralSelection.Tell(new RegisterSite(_nodeOptions.SiteId!, localSiteCommPath));
_logger.LogInformation(
"Registered with Central at {CentralPath} as site {SiteId}",
"Configured central heartbeat path at {CentralPath} for site {SiteId}",
_communicationOptions.CentralActorPath, _nodeOptions.SiteId);
}
}