// these are messages from some other node in the cluster
public Task <IMessage> ReceiveMessage(ISubscriber sender, IMessage message, object?context, CancellationToken token)
{
if (message.Name == server.ShardAssignment.Name)
{
if (_cluster.Leader.IsRemote)
{
// shard assignment requests should always be sent to the leader, so we if get one as
// a follower then something went wrong
_logger.LogWarning("Got shard assignment message as a follower");
}
// if we have a current shardAssignment, and one that was sent in that are different
// we should check membership for new servers, or missing servers.
// if we have new servers, ....
// if we have missing servers ...
// if we have same servers, but different assignments, then we will want to either keep it the same
// or determine if we should balance some things around.
var sa = new ShardAssignment(_cluster.Members.Count * 4, _cluster.Members);
this._currentShardAssignment = sa;
return(Task.FromResult(sa.ToBinaryMessage() as IMessage));
}
throw new NotImplementedException();
}
// these are signals from some other node in the cluster
public Task ReceiveSignal(ISubscriber sender, IMessage signal, object?context, CancellationToken token)
{
switch (signal.Name)
{
case "": break;
default: break;
}
throw new NotImplementedException();
}
public ShardAssignment(IMessage clusterMessage) : base()
{
if (clusterMessage.Name == "GetShardAssignment")
{
var respBytes = clusterMessage.ToByteArrayAsync().Result;
var respSA = new Ekati.Protocol.Grpc.ShardAssignment();
respSA.MergeFrom(respBytes);
InitFrom(respSA);
}
}