private void PublishDiff(Gossip oldGossip, Gossip newGossip, Action <object> pub)
{
foreach (var @event in ClusterEvent.DiffMemberEvents(oldGossip, newGossip))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffUnreachable(oldGossip, newGossip))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffReachable(oldGossip, newGossip))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffLeader(oldGossip, newGossip, _selfUniqueAddress))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffRolesLeader(oldGossip, newGossip, _selfUniqueAddress))
{
pub(@event);
}
// publish internal SeenState for testing purposes
foreach (var @event in ClusterEvent.DiffSeen(oldGossip, newGossip, _selfUniqueAddress))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffReachability(oldGossip, newGossip))
{
pub(@event);
}
}
private void PublishDiff(MembershipState oldState, MembershipState newState, Action <object> pub)
{
foreach (var @event in ClusterEvent.DiffMemberEvents(oldState, newState))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffUnreachable(oldState, newState))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffReachable(oldState, newState))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffLeader(oldState, newState))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffRolesLeader(oldState, newState))
{
pub(@event);
}
// publish internal SeenState for testing purposes
foreach (var @event in ClusterEvent.DiffSeen(oldState, newState))
{
pub(@event);
}
foreach (var @event in ClusterEvent.DiffReachability(oldState, newState))
{
pub(@event);
}
}
private bool RoleLeaderChanged(ClusterEvent.RoleLeaderChanged rlc)
{
if (Cluster.SelfRoles.Contains(rlc.Role))
{
if (rlc.Leader == Cluster.SelfAddress)
{
Schedule();
return true;
}
else
{
m_TokenSource.Cancel();
}
}
return false;
}
public void PushClusterState(ClusterEvent.CurrentClusterState clusterState, Address currentClusterAddress)
{
// Push ClusterState x to subscribed client.
// So if client A subscibes to ClusterState A then it should only get A and not B.
// TODO:
List<ClusterRoleLeader> clusterRoleLeaders = new List<ClusterRoleLeader>();
foreach (var member in clusterState.Members)
{
var role = member.Roles.First();
var address = clusterState.RoleLeader(role);
clusterRoleLeaders.Add(new ClusterRoleLeader(role, address));
}
var context = GlobalHost.ConnectionManager.GetHubContext<ClusterStateHub>();
dynamic allClients = context.Clients.All.broadcastClusterState(clusterState, clusterRoleLeaders, currentClusterAddress);
}
public void ClusterState(ClusterEvent.CurrentClusterState clusterState, Address currentClusterAddress)
{
List<ClusterRoleLeader> clusterRoleLeaders = new List<ClusterRoleLeader>();
foreach (var member in clusterState.Members)
{
foreach (var role in member.Roles)
{
var address = clusterState.RoleLeader(role);
clusterRoleLeaders.Add(new ClusterRoleLeader(role, address));
}
}
var context = GlobalHost.ConnectionManager.GetHubContext<MonitorHub>();
context.Clients.All.broadcastClusterState(new
{
state = clusterState,
leaders = clusterRoleLeaders,
address = currentClusterAddress,
time = DateTime.UtcNow
});
}
/// <summary>
/// Update the initial node ring for those nodes that are <see cref="MemberStatus.Up"/>
/// </summary>
private void ReceiveState(ClusterEvent.CurrentClusterState state)
{
Nodes = state.Members.Where(x => x.Status == MemberStatus.Up).Select(x => x.Address).ToImmutableHashSet();
}
private void Init(ClusterEvent.CurrentClusterState snapshot)
{
var nodes = snapshot.Members.Where(x => x.Status == MemberStatus.Up).Select(x => x.UniqueAddress).ToImmutableHashSet();
_state = _state.Init(nodes);
}
private void PublishInternalStats(ClusterEvent.CurrentInternalStats currentStats)
{
Publish(currentStats);
}
private void Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initMode,
IEnumerable<Type> to)
{
if (initMode == ClusterEvent.SubscriptionInitialStateMode.InitialStateAsEvents)
{
Action<object> pub = @event =>
{
var eventType = @event.GetType();
//TODO: IsAssignableFrom same as in scala?
if (to.Any(o => o.IsAssignableFrom(eventType)))
subscriber.Tell(@event);
};
PublishDiff(Gossip.Empty, _latestGossip, pub);
}
else if(initMode == ClusterEvent.SubscriptionInitialStateMode.InitialStateAsSnapshot)
{
SendCurrentClusterState(subscriber);
}
foreach (var t in to) _eventStream.Subscribe(subscriber, t);
}
private void PrintClusterEvent(ClusterEvent.MemberStatusChange msg)
{
_log.Info("Member {MemberStatus} {MemberAddress} {MemberRoles}", msg.Member.Status, msg.Member.Address,
string.Join(",", msg.Member.Roles));
}
private void MemberUp(ClusterEvent.MemberUp memberUp)
{
if (memberUp.Member.Address != _cluster.SelfAddress)
{
_clusterNodes = _clusterNodes.Add(memberUp.Member.Address);
TakeOverResponsibility(memberUp.Member.Address);
Unreachable.Remove(memberUp.Member.Address);
}
}
private void MemberRemoved(ClusterEvent.MemberRemoved memberRemoved)
{
if (memberRemoved.Member.Address != _cluster.SelfAddress)
{
_clusterNodes = _clusterNodes.Remove(memberRemoved.Member.Address);
if (memberRemoved.PreviousStatus == MemberStatus.Down)
{
Quarantine(memberRemoved.Member.Address, memberRemoved.Member.UniqueAddress.Uid);
}
PublishAddressTerminated(memberRemoved.Member.Address);
}
}
internal PublishEvent(ClusterEvent.IClusterDomainEvent @event)
{
_event = @event;
}
public Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initialStateMode,
ImmutableHashSet<Type> to)
{
_subscriber = subscriber;
_initialStateMode = initialStateMode;
_to = to;
}
private void PrintClusterEvent(ClusterEvent.MemberStatusChange msg)
{
_log.Info("Member {MemberStatus} {MemberAddress} {MemberRoles}", msg.Member.Status, msg.Member.Address,
string.Join(",", msg.Member.Roles));
var address = msg.Member.Address;
var userPath = $"akka.tcp://{address.System}@{address.Host}:{address.Port}/user";
Context.ActorSelection(userPath).Tell(new Identify(Guid.NewGuid()));
var remotePath = $"akka.tcp://{address.System}@{address.Host}:{address.Port}/remote";
Context.ActorSelection(remotePath).Tell(new Identify(Guid.NewGuid()));
var sysPath = $"akka.tcp://{address.System}@{address.Host}:{address.Port}/system";
Context.ActorSelection(sysPath).Tell(new Identify(Guid.NewGuid()));
}
public CurrentClusterStatus(List<ClusterRoleLeader> clusterRoleLeaders, Address currentClusterAddress, ClusterEvent.CurrentClusterState clusterState)
{
ClusterRoleLeaders = clusterRoleLeaders;
CurrentClusterAddress = currentClusterAddress;
ClusterState = clusterState;
}
