ci: bump version with Build-81

Use Option instead of null checks in HealthMonitor and InstanceRegistry
per Scalafix DisableSyntax rule.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

modules/coordinator/CHANGELOG.md

@@ -334,3 +334,35 @@
 * **middleware:** update paths for bot generation and stockfish configuration ([2dd0501](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2dd0501687db08dcd242359f6837125baf8a2fdc))
 * **redis:** update Redis configuration with max pool size and waiting parameters ([5baf6a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5baf6a7cdbea484fc49c02e2b5a1c3919b7fa2c4))
 * update HealthMonitor to evict instances without associated pods ([0f41f13](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/0f41f13ce68b76846684bab67241a122250dfaf9))
+##  (2026-05-13)
+
+### Features
+
+* add coordinator startup validation and K8s pod watch ([81b045d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/81b045d01bb054a4bc9dc9e02fc30f814e756205))
+* add initialization metrics for various services ([d438e97](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d438e97f32bdde0bfc63c1b4a8cc810cdd093166))
+* add OpenTelemetry trace configuration with parentbased sampler ([3904d5a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3904d5ad8ad4930ddee65287a7bfab785a6148f5))
+* **config:** update application.yml for PostgreSQL and remove staging/production configurations ([2404e61](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2404e6164c3b50ffccbea5238d636060d6abe4d6))
+* **config:** update application.yml for staging and production environments ([6113432](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/6113432a14c476a3a0dfc0d449e17d023697f2ba))
+* configure logging and add OpenTelemetry support ([#49](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/49)) ([d57c488](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d57c4886612d1d92da0e1b79209fc83e6ef537a1))
+* **docker:** add .dockerignore and .gitignore files for build exclusions ([c987d8e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c987d8e258c0e6c4cfbdaa8381c64c410d7a2b83))
+* **docker:** add Dockerfiles for building Quarkus application in native and JVM modes ([3f2d2bb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3f2d2bb4c97fa8cddba66e1da4427c54236dfeed))
+* **docker:** add Dockerfiles for Quarkus application in JVM and native modes ([34b9933](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/34b993304670cf2aa62cd2f6460cee7b9864b08e))
+* **logging:** add DEBUG/INFO/WARN logging across services (NCS-72) ([#41](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/41)) ([804a4bf](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/804a4bf179e3dfb19e2be4390e7e543caf5237c6))
+* NCS-78 Add Traceability to the Applications ([#46](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/46)) ([649566e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/649566eb3fcf38f91c8896a739f74ea318af312d))
+* NCS-78 Add Traceability to the Applications ([#47](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/47)) ([87dfc6c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/87dfc6c2bcce7f7d58fc641bd8d468a2e584c108))
+* true-microservices ([#40](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/40)) ([5909242](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/590924254e8a2754de661a57a03e43f89ceb6299))
+
+### Bug Fixes
+
+* add instance-dead-timeout configuration and update HealthMonitor to use it for stale instance eviction ([be0b710](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/be0b710543b542da5c301efef7d2d587d0ba758a))
+* clean up code formatting and improve error handling in gRPC server and failover service ([ad9495a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/ad9495afa3e93593b57154a187346c9b01393911))
+* **coordinator:** refine type casting in rolloutSpec method ([#45](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/45)) ([d522f7f](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d522f7f6edf9c985f03dd16816439d4184f1a589))
+* **coordinator:** use genericKubernetesResources API for Argo Rollout scaling ([#43](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/43)) ([fa3c6b2](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fa3c6b2886dc59c14c5dad834acc9b41e42023bb))
+* **coordinator:** use genericKubernetesResources API for Argo Rollout scaling ([#44](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/44)) ([82d0b75](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/82d0b754be1075084944b466858672d944f9f7d8))
+* **dependencies:** replace Fabric8 Kubernetes client with Quarkus Kubernetes client ([5f44570](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5f44570b357277d09f33b7296860c421e2e70ce0))
+* enhance AutoScaler and InstanceRegistry for replica management and stale instance eviction ([b4920d3](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b4920d3817e58bda94d7764e608b856ce9a909f7))
+* **middleware:** update paths for bot generation and stockfish configuration ([2dd0501](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2dd0501687db08dcd242359f6837125baf8a2fdc))
+* **redis:** update Redis configuration with max pool size and waiting parameters ([5baf6a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5baf6a7cdbea484fc49c02e2b5a1c3919b7fa2c4))
+* replace null checks with Option in coordinator ([2b04d7f](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2b04d7fa713e06662bff5afe3fb3f9d04541ce51))
+* update grpcServer variable to use Instance wrapper and add optional access method ([d5c8da2](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d5c8da20f8805199e920ea5afbd9cdb39a078e40))
+* update HealthMonitor to evict instances without associated pods ([0f41f13](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/0f41f13ce68b76846684bab67241a122250dfaf9))

modules/coordinator/src/main/scala/de/nowchess/coordinator/grpc/CoordinatorGrpcServer.scala

@@ -127,7 +127,8 @@ class CoordinatorGrpcServer extends CoordinatorServiceGrpc.CoordinatorServiceImp
         _ =>
           val response = DrainInstanceResponse.newBuilder().setGamesMigrated(gamesBefore).build()
           responseObserver.onNext(response)
-          responseObserver.onCompleted(),
+          responseObserver.onCompleted()
+        ,
         ex =>
           log.warnf(ex, "Drain failed for %s", instanceId)
           responseObserver.onError(ex),

modules/coordinator/src/main/scala/de/nowchess/coordinator/service/FailoverService.scala

@@ -122,14 +122,17 @@ class FailoverService:
     log.infof("Cleaned up games set for instance %s", instanceId)
 
   private def waitForHealthyInstanceAsync(): Uni[InstanceMetadata] =
-    Uni.createFrom().deferred(() =>
-      instanceRegistry.getAllInstances
-        .filter(_.state == "HEALTHY")
-        .sortBy(_.subscriptionCount)
-        .headOption match
+    Uni
+      .createFrom()
+      .deferred(() =>
+        instanceRegistry.getAllInstances
+          .filter(_.state == "HEALTHY")
+          .sortBy(_.subscriptionCount)
+          .headOption match
           case Some(inst) => Uni.createFrom().item(inst)
-          case None       => Uni.createFrom().failure(new RuntimeException("no healthy instance"))
-    ).onFailure()
+          case None       => Uni.createFrom().failure(new RuntimeException("no healthy instance")),
+      )
+      .onFailure()
       .retry()
       .withBackOff(Duration.ofMillis(500))
       .expireIn(config.failoverWaitTimeout.toMillis)

modules/coordinator/src/main/scala/de/nowchess/coordinator/service/HealthMonitor.scala

@@ -39,7 +39,7 @@ class HealthMonitor:
   private var meterRegistry: MeterRegistry = uninitialized
 
   @Inject
-  private var grpcServer: CoordinatorGrpcServer = uninitialized
+  private var grpcServerInstance: Instance[CoordinatorGrpcServer] = uninitialized
 
   @Inject
   private var failoverService: FailoverService = uninitialized
@@ -52,6 +52,10 @@ class HealthMonitor:
     if kubeClientInstance.isUnsatisfied then None
     else Some(kubeClientInstance.get())
 
+  private def grpcServerOpt: Option[CoordinatorGrpcServer] =
+    if grpcServerInstance.isUnsatisfied then None
+    else Some(grpcServerInstance.get())
+
   def setRedisPrefix(prefix: String): Unit =
     redisPrefix = prefix
 
@@ -133,19 +137,18 @@ class HealthMonitor:
                 action match
                   case Watcher.Action.DELETED =>
                     handlePodGone(pod)
-                  case Watcher.Action.MODIFIED
-                      if Option(pod.getMetadata.getDeletionTimestamp).isDefined =>
+                  case Watcher.Action.MODIFIED if Option(pod.getMetadata.getDeletionTimestamp).isDefined =>
                     handlePodTerminating(pod)
                   case _ => ()
 
               override def onClose(cause: WatcherException): Unit =
-                if cause != null then
-                  log.warnf(cause, "Pod watch closed, restarting")
+                Option(cause).foreach { ex =>
+                  log.warnf(ex, "Pod watch closed, restarting")
                   startPodWatch()
+                },
             )
           log.info("Pod watch started")
-        catch
-          case ex: Exception => log.warnf(ex, "Failed to start pod watch")
+        catch case ex: Exception => log.warnf(ex, "Failed to start pod watch")
 
   private def isPodReady(pod: Pod): Boolean =
     Option(pod.getStatus)
@@ -180,15 +183,17 @@ class HealthMonitor:
 
   private def validateStartupInstances(timeoutMs: Long): Unit =
     Thread.sleep(timeoutMs)
-    instanceRegistry.getAllInstances.foreach { inst =>
-      if !grpcServer.hasActiveStream(inst.instanceId) then
-        log.warnf(
-          "Startup: instance %s did not reconnect within %dms — evicting",
-          inst.instanceId,
-          timeoutMs,
-        )
-        instanceRegistry.removeInstance(inst.instanceId)
-        deleteK8sPod(inst.instanceId)
+    grpcServerOpt.foreach { grpcServer =>
+      instanceRegistry.getAllInstances.foreach { inst =>
+        if !grpcServer.hasActiveStream(inst.instanceId) then
+          log.warnf(
+            "Startup: instance %s did not reconnect within %dms — evicting",
+            inst.instanceId,
+            timeoutMs,
+          )
+          instanceRegistry.removeInstance(inst.instanceId)
+          deleteK8sPod(inst.instanceId)
+      }
     }
 
   private def handlePodTerminating(pod: Pod): Unit =

modules/coordinator/src/main/scala/de/nowchess/coordinator/service/InstanceRegistry.scala

@@ -51,14 +51,15 @@ class InstanceRegistry:
     keys.asScala.foreach { key =>
       val instanceId = key.stripPrefix(s"$redisPrefix:instances:")
       val json       = syncRedis.value(classOf[String]).get(key)
-      if json != null then
+      Option(json).foreach { jsonStr =>
         try
-          val metadata = mapper.readValue(json, classOf[InstanceMetadata])
+          val metadata = mapper.readValue(jsonStr, classOf[InstanceMetadata])
           instances.put(instanceId, metadata)
           log.infof("Startup: loaded instance %s from Redis", instanceId)
         catch
           case ex: Exception =>
             log.warnf(ex, "Startup: failed to parse instance %s", instanceId)
+      }
     }
 
   def getInstance(instanceId: String): Option[InstanceMetadata] =

modules/coordinator/versions.env

@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=18
+MINOR=19
 PATCH=0