public override async Task <ChangeReply> ChangeMasterNotification(ChangeNotificationRequest request, ServerCallContext context)
{
WaitUnfreeze();
await _gigaStorage.ChangeMasterNotificationAsync(request.ServerId, request.NewServerId, request.PartitionId);
return(await Task.FromResult(new ChangeReply
{
// Empty message as ack
}));
}
// Notifies server_id that down_server_id is down and that the new master of the partions of down_server_id is new_server
public void ChangeMasterNotificationRequest(string server, string down_server, string new_server, string partition)
{
Console.WriteLine("Notifying server: " + server + " about down server " + down_server + " with new " + new_server + " for partition " + partition);
ChangeNotificationRequest changeNotificationRequest = new ChangeNotificationRequest {
ServerId = down_server, NewServerId = new_server, PartitionId = partition
};
string s = server;
new Thread(() => ThreadNotification(s, changeNotificationRequest)).Start();
}
public override Task <ChangeNotificationResponse> Notify(ChangeNotificationRequest request,
ServerCallContext context)
{
_logger.LogInformation(request.Value);
_timestamps.Add(request.Value);
_hub.Clients.All.SendAsync("onChanged", new Notification {
Body = request.Value
});
_logger.LogInformation($"Pushed onChanged ({request.Value}) via SignalR");
return(Task.FromResult(new ChangeNotificationResponse()));
}
public void ThreadNotification(string server, ChangeNotificationRequest request)
{
try
{
_clients[server].ChangeMasterNotificationAsync(request);
}
catch
{
// If fails then the server is down
DeadServerReport(ServerId);
}
}
