/////////////////////////////////////////
/* grpc functions */
public override Task <NewLeaderACK> UpdateLeader(NewLeader request, ServerCallContext context)
{
Console.WriteLine("***********************************************************************************************");
Console.WriteLine("Puppet Master has received an update leader...");
Console.WriteLine("***********************************************************************************************");
return(Task.FromResult(UpdateLeader_aux(request)));
}
public NewLeaderACK UpdateLeader_aux(NewLeader request)
{
string partition_id = request.Partid;
string leader_id = request.Leaderid;
int pos_partlist = -1;
int pos_servlist = -1;
//iterate over partition and update
foreach (Partition p in partList)
{
pos_partlist = pos_partlist + 1;
if (p.getName() == partition_id)
{
//partition to update
foreach ((string server, bool is_master) in p.getServIDs())
{
pos_servlist = pos_servlist + 1;
if (server == leader_id)
{
goto UpdateLead;
}
}
}
}
UpdateLead:
partList.ElementAt(pos_partlist).getServIDs().RemoveAt(pos_servlist);
partList.ElementAt(pos_partlist).getServIDs().Add((leader_id, true));
Console.WriteLine($"Puppet Master updated leader {leader_id} at partition {partition_id}");
//propagate this change to clients
Console.WriteLine("PuppetMaster is sending the update leader to the clients...");
foreach (Client c in this.cliList)
{
//do client to server and propagate
AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true);
GrpcChannel channel = GrpcChannel.ForAddress(c.getURL());
var client = new ClientServices.ClientServicesClient(channel);
client.UpdateLeaderClient(new LeaderInfo
{
Partitionid = partition_id,
Leaderid = leader_id
});
}
return(new NewLeaderACK {
});
}
