["plantuml", "03_classClusterSingletonServiceGroup", "svg"]

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@startuml

interface "AutoCloseable" as auto {
  +void close();
}

interface "ClusterSingletonService" as csService {
  +void instantiateServiceInstance();
  +ListenableFuture<Void> closeServiceInstance();
  +String getServiceGroupIdentifier();
}

interface "ClusterSingletonServiceGroup" as cssGroup {
  +void initializationClusterSingletonGroup()
  +ClusterSingletonServiceRegistration registerService(ClusterSingletonService);
  +void unregisterService(ClusterSingletonService);
  +void ownershipChanged(final OwnershipChange ownershipChange);
  +ListenableFuture<List<Void>> closingClusterSingletonGroup();
}

interface "ClusterSingletonServiceRegistration" as cssRegistration {
}

interface "ClusterSingletonServiceProvider" as cssProvider {
  +ClusterSingletonServiceRegistration registerClusterSingletonService(ClusterSingletonService);
}

cssProvider --|> auto
cssRegistration --|> auto

csService - cssProvider : registerClusterSingletonService
cssProvider - cssGroup : registerClusterSingletonService


@enduml
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