public Cluster(ActorSystemImpl system)
{
System = system;
_settings = new ClusterSettings(system.Settings.Config, system.Name);
var provider = system.Provider as ClusterActorRefProvider;
if (provider == null)
{
throw new ConfigurationException(
String.Format("ActorSystem {0} needs to have a 'ClusterActorRefProvider' enabled in the configuration, currently uses {1}",
system,
system.Provider.GetType().FullName));
}
_selfUniqueAddress = new UniqueAddress(provider.Transport.DefaultAddress, AddressUidExtension.Uid(system));
_log = Logging.GetLogger(system, "Cluster");
LogInfo("Starting up...");
_failureDetector = new DefaultFailureDetectorRegistry <Address>(() => FailureDetectorLoader.Load(_settings.FailureDetectorImplementationClass, _settings.FailureDetectorConfig,
system));
_scheduler = CreateScheduler(system);
//create supervisor for daemons under path "/system/cluster"
_clusterDaemons = system.SystemActorOf(Props.Create(() => new ClusterDaemon(_settings)).WithDeploy(Deploy.Local), "cluster");
//TODO: Pretty sure this is bad and will at least throw aggregateexception possibly worse.
_clusterCore = GetClusterCoreRef().Result;
_readView = new ClusterReadView(this);
}
/// <summary>
/// Initializes a new instance of the <see cref="Cluster"/> class.
/// </summary>
/// <param name="system">The actor system that hosts the cluster.</param>
/// <exception cref="ConfigurationException">
/// This exception is thrown if the <paramref name="system"/> does not have a <see cref="ClusterActorRefProvider"/> enabled in the configuration.
/// </exception>
public Cluster(ActorSystemImpl system)
{
System = system;
Settings = new ClusterSettings(system.Settings.Config, system.Name);
if (!(system.Provider is IClusterActorRefProvider provider))
{
throw new ConfigurationException(
$"ActorSystem {system} needs to have a 'IClusterActorRefProvider' enabled in the configuration, currently uses {system.Provider.GetType().FullName}");
}
SelfUniqueAddress = new UniqueAddress(provider.Transport.DefaultAddress, AddressUidExtension.Uid(system));
_log = Logging.GetLogger(system, "Cluster");
CurrentInfoLogger = new InfoLogger(_log, Settings, SelfAddress);
LogInfo("Starting up...");
var clusterCoreTaskSource = new TaskCompletionSource <IActorRef>();
_clusterCoreTask = clusterCoreTaskSource.Task;
FailureDetector = new DefaultFailureDetectorRegistry <Address>(() => FailureDetectorLoader.Load(Settings.FailureDetectorImplementationClass, Settings.FailureDetectorConfig,
system));
Scheduler = CreateScheduler(system);
// it has to be lazy - otherwise if downing provider will init a cluster itself, it will deadlock
_downingProvider = new Lazy <IDowningProvider>(() => Akka.Cluster.DowningProvider.Load(Settings.DowningProviderType, system), LazyThreadSafetyMode.ExecutionAndPublication);
//create supervisor for daemons under path "/system/cluster"
_clusterDaemons = system.SystemActorOf(Props.Create(() => new ClusterDaemon(Settings)).WithDeploy(Deploy.Local), "cluster");
_readView = new ClusterReadView(this);
// force the underlying system to start
_ = Task.Run(async() =>
{
try
{
_clusterCore = await _clusterDaemons.Ask <IActorRef>(new InternalClusterAction.GetClusterCoreRef(this), System.Settings.CreationTimeout).ConfigureAwait(false);
clusterCoreTaskSource.SetResult(_clusterCore);
system.RegisterOnTermination(Shutdown);
LogInfo("Started up successfully");
}
catch (Exception ex)
{
_log.Error(ex, "Failed to startup Cluster. You can try to increase 'akka.actor.creation-timeout'.");
Shutdown();
System.DeadLetters.Tell(ex); //don't re-throw the error. Just log it.
_clusterCore = System.DeadLetters;
clusterCoreTaskSource.SetResult(_clusterCore);
}
});
}
public Cluster(ActorSystemImpl system)
{
System = system;
Settings = new ClusterSettings(system.Settings.Config, system.Name);
var provider = system.Provider as ClusterActorRefProvider;
if (provider == null)
{
throw new ConfigurationException(
String.Format("ActorSystem {0} needs to have a 'ClusterActorRefProvider' enabled in the configuration, currently uses {1}",
system,
system.Provider.GetType().FullName));
}
SelfUniqueAddress = new UniqueAddress(provider.Transport.DefaultAddress, AddressUidExtension.Uid(system));
_log = Logging.GetLogger(system, "Cluster");
LogInfo("Starting up...");
_failureDetector = new DefaultFailureDetectorRegistry <Address>(() => FailureDetectorLoader.Load(Settings.FailureDetectorImplementationClass, Settings.FailureDetectorConfig,
system));
_scheduler = CreateScheduler(system);
// it has to be lazy - otherwise if downing provider will init a cluster itself, it will deadlock
_downingProvider = new Lazy <IDowningProvider>(() => Akka.Cluster.DowningProvider.Load(Settings.DowningProviderType, system), LazyThreadSafetyMode.ExecutionAndPublication);
//create supervisor for daemons under path "/system/cluster"
_clusterDaemons = system.SystemActorOf(Props.Create(() => new ClusterDaemon(Settings)).WithDeploy(Deploy.Local), "cluster");
_readView = new ClusterReadView(this);
// force the underlying system to start
_clusterCore = GetClusterCoreRef().Result;
system.RegisterOnTermination(Shutdown);
LogInfo("Started up successfully");
}
public EventBusListener(Cluster cluster, ClusterReadView readView)
{
_cluster = cluster;
_readView = readView;
Receive<ClusterEvent.IClusterDomainEvent>(clusterDomainEvent =>
{
clusterDomainEvent.Match()
.With<ClusterEvent.SeenChanged>(changed =>
{
State = State.Copy(seenBy: changed.SeenBy);
})
.With<ClusterEvent.ReachabilityChanged>(changed =>
{
_readView._reachability = changed.Reachability;
})
.With<ClusterEvent.MemberRemoved>(removed =>
{
State = State.Copy(members: State.Members.Remove(removed.Member),
unreachable: State.Unreachable.Remove(removed.Member));
})
.With<ClusterEvent.UnreachableMember>(member =>
{
// replace current member with new member (might have different status, only address is used in == comparison)
State = State.Copy(unreachable: State.Unreachable.Remove(member.Member).Add(member.Member));
})
.With<ClusterEvent.ReachableMember>(member =>
{
State = State.Copy(unreachable: State.Unreachable.Remove(member.Member));
})
.With<ClusterEvent.IMemberEvent>(memberEvent =>
{
var newUnreachable = State.Unreachable;
// replace current member with new member (might have different status, only address is used in == comparison)
if (State.Unreachable.Contains(memberEvent.Member))
newUnreachable = State.Unreachable.Remove(memberEvent.Member).Add(memberEvent.Member);
State = State.Copy(
members: State.Members.Remove(memberEvent.Member).Add(memberEvent.Member),
unreachable: newUnreachable);
})
.With<ClusterEvent.LeaderChanged>(changed =>
{
State = State.Copy(leader: changed.Leader);
})
.With<ClusterEvent.RoleLeaderChanged>(changed =>
{
State = State.Copy(roleLeaderMap: State.RoleLeaderMap.SetItem(changed.Role, changed.Leader));
})
.With<ClusterEvent.CurrentInternalStats>(stats =>
{
readView._latestStats = stats;
})
.With<ClusterEvent.ClusterMetricsChanged>(changed =>
{
readView._clusterMetrics = changed.NodeMetrics;
})
.With<ClusterEvent.ClusterShuttingDown>(_ => { });
});
Receive<ClusterEvent.CurrentClusterState>(state =>
{
State = state;
});
}
public EventBusListener(Cluster cluster, ClusterReadView readView)
{
_cluster = cluster;
_readView = readView;
Receive <ClusterEvent.IClusterDomainEvent>(clusterDomainEvent =>
{
clusterDomainEvent.Match()
.With <ClusterEvent.SeenChanged>(changed =>
{
State = State.Copy(seenBy: changed.SeenBy);
})
.With <ClusterEvent.ReachabilityChanged>(changed =>
{
_readView._reachability = changed.Reachability;
})
.With <ClusterEvent.MemberRemoved>(removed =>
{
State = State.Copy(members: State.Members.Remove(removed.Member),
unreachable: State.Unreachable.Remove(removed.Member));
})
.With <ClusterEvent.UnreachableMember>(member =>
{
// replace current member with new member (might have different status, only address is used in == comparison)
State = State.Copy(unreachable: State.Unreachable.Remove(member.Member).Add(member.Member));
})
.With <ClusterEvent.ReachableMember>(member =>
{
State = State.Copy(unreachable: State.Unreachable.Remove(member.Member));
})
.With <ClusterEvent.IMemberEvent>(memberEvent =>
{
var newUnreachable = State.Unreachable;
// replace current member with new member (might have different status, only address is used in == comparison)
if (State.Unreachable.Contains(memberEvent.Member))
{
newUnreachable = State.Unreachable.Remove(memberEvent.Member).Add(memberEvent.Member);
}
State = State.Copy(
members: State.Members.Remove(memberEvent.Member).Add(memberEvent.Member),
unreachable: newUnreachable);
})
.With <ClusterEvent.LeaderChanged>(changed =>
{
State = State.Copy(leader: changed.Leader);
})
.With <ClusterEvent.RoleLeaderChanged>(changed =>
{
State = State.Copy(roleLeaderMap: State.RoleLeaderMap.SetItem(changed.Role, changed.Leader));
})
.With <ClusterEvent.CurrentInternalStats>(stats =>
{
readView._latestStats = stats;
})
.With <ClusterEvent.ClusterShuttingDown>(_ => { });
});
Receive <ClusterEvent.CurrentClusterState>(state =>
{
State = state;
});
}
