// 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();
}
public async void Startup()
{
var shardAssignment = await _clusterBus.LeaderRouter.SendMessageAsync(new ShardAssignment(_cluster.Members.Count * 4, _cluster.Members).ToBinaryMessage(),
(resp, token) => new ValueTask <ShardAssignment>(new ShardAssignment(resp)), CancellationToken.None);
this._currentShardAssignment = shardAssignment;
}
public static Ekati.Protocol.Grpc.ShardAssignment ToGrpcShardAssignment(ShardAssignment sa)
{
var respSA = new Ekati.Protocol.Grpc.ShardAssignment();
respSA.Leaders.AddRange(sa.Leaders);
for (int i = 0; i < sa.Followers.GetLength(0); i++)
{
var fo = new Followers();
fo.Follower.AddRange(sa.Followers[i]);
respSA.Followers.Add(fo);
}
return(respSA);
}