protected DiscoveryService(ClusterDiscoverySettings settings)
{
this.Cluster = Cluster.Get(Context.System);
this.Log = Context.GetLogger();
this.settings = settings;
this.Entry = new MemberEntry(Context.System.Name, Cluster.SelfAddress, Cluster.SelfRoles);
var retries = settings.JoinRetries;
ReceiveAsync <Join>(async _ =>
{
retries--;
try
{
var joined = await TryJoinAsync();
if (!joined)
{
SendJoinSignal();
}
}
catch (Exception cause)
{
if (retries > 0)
{
SendJoinSignal();
}
else
{
Log.Error(cause, "Failed to obtain a distributed lock for actor system [{0}] after {1} retries. Closing.", Context.System.Name, retries);
Context.Stop(Self);
}
}
});
}
protected DiscoveryService(ClusterDiscoverySettings settings)
{
this.Cluster = Cluster.Get(Context.System);
this.Log = Context.GetLogger();
this.settings = settings;
this.Entry = new MemberEntry(Context.System.Name, Cluster.SelfAddress, Cluster.SelfRoles);
var retries = settings.JoinRetries;
Receive <Init>(_ => SendJoinSignal());
ReceiveAsync <Join>(async _ =>
{
retries--;
try
{
var joined = await TryJoinAsync();
if (!joined)
{
SendJoinSignal();
}
}
catch (Exception cause)
{
if (retries > 0)
{
Log.Error(cause, "Failed to join actor system [{0}] to the cluster. Remaining retries: [{1}]", Context.System.Name, retries);
SendJoinSignal();
}
else
{
Log.Error(cause, "Failed to join actor system [{0}] to the cluster after {1} retries. Closing.", Context.System.Name, settings.JoinRetries);
Context.Stop(Self);
}
}
});
Receive <ClusterEvent.MemberRemoved>(removed => StopOnClusterShutdown(removed.Member.Address));
}
/// <summary> /// Used for health checks. Triggers healt check heartbeat, marking current /// <paramref name="node"/> as alive. /// </summary> /// <param name="node"></param> /// <returns></returns> protected abstract Task MarkAsAliveAsync(MemberEntry node);
/// <summary> /// Deregisters (potentially previously registered) <paramref name="node"/> /// from the external service. Used i.e. for graceful shutdown scenarios. /// </summary> /// <param name="node"></param> /// <returns></returns> protected abstract Task DeregisterNodeAsync(MemberEntry node);