public void Send(NodeConnectionInfo dest, DisconnectedFromCluster req)
{
LogStatus("disconnect " + dest, async() =>
{
var requestUri = string.Format("raft/disconnectFromCluster?term={0}&from={1}&clusterTopologyId={2}", req.Term, req.From, req.ClusterTopologyId);
using (var request = CreateRequest(dest, null, requestUri, HttpMethods.Get, _log))
{
var httpResponseMessage = await request.ExecuteAsync().ConfigureAwait(false);
UpdateConnectionFailureCounts(dest, httpResponseMessage);
var reply = await httpResponseMessage.Content.ReadAsStringAsync().ConfigureAwait(false);
if (httpResponseMessage.IsSuccessStatusCode == false)
{
_log.Warn("Error sending disconnecton notification to {0}. Status: {1}\r\n{2}\r\nreason:{3}", dest.Name, httpResponseMessage.StatusCode, httpResponseMessage, reply, httpResponseMessage.ReasonPhrase);
return;
}
if (httpResponseMessage.StatusCode == HttpStatusCode.NotAcceptable)
{
_log.Warn("Error sending disconnecton notification to {0}. Status: NotAcceptable\r\nreason:{1}\r\ncontent{2}", dest.Name, httpResponseMessage.ReasonPhrase, reply);
}
SendToSelf(new NothingToDo());
}
});
}
public void Handle(DisconnectedFromCluster req)
{
if (FromOurTopology(req) == false)
{
_log.Info("Got a disconnection notification message outside my cluster topology (id: {0}), ignoring", req.ClusterTopologyId);
return;
}
if (req.Term < Engine.PersistentState.CurrentTerm)
{
_log.Info("Got disconnection notification from an older term, ignoring");
return;
}
if (req.From != Engine.CurrentLeader)
{
_log.Info("Got disconnection notification from {0}, who isn't the current leader, ignoring.",
req.From);
return;
}
_log.Warn("Got disconnection notification from the leader, clearing topology and moving to idle follower state");
var tcc = new TopologyChangeCommand
{
Requested = new Topology(req.ClusterTopologyId)
};
Engine.PersistentState.SetCurrentTopology(tcc.Requested, 0L);
Engine.StartTopologyChange(tcc);
Engine.CommitTopologyChange(tcc);
Engine.SetState(RaftEngineState.Follower);
}
public Task <HttpResponseMessage> DisconnectFromCluster([FromUri] DisconnectedFromCluster request)
{
var taskCompletionSource = new TaskCompletionSource <HttpResponseMessage>();
_bus.Publish(request, taskCompletionSource);
return(taskCompletionSource.Task);
}
public void Send(NodeConnectionInfo dest, DisconnectedFromCluster req)
{
if (_linkedTokenSource.IsCancellationRequested)
{
return;
}
_sender.Send(dest, req);
}
public void Send(NodeConnectionInfo dest, DisconnectedFromCluster req)
{
HttpClient client;
using (GetConnection(dest, out client))
{
LogStatus("disconnect " + dest, async() =>
{
var message = await client.GetAsync(string.Format("raft/disconnectFromCluster?term={0}&from={1}&clusterTopologyId={2}", req.Term, req.From, req.ClusterTopologyId));
var reply = await message.Content.ReadAsStringAsync();
if (message.IsSuccessStatusCode == false)
{
_log.Warn("Error sending disconnecton notification to {0}. Status: {1}\r\n{2}", dest.Name, message.StatusCode, message, reply);
return;
}
SendToSelf(new NothingToDo());
});
}
}
public void Send(NodeConnectionInfo dest, DisconnectedFromCluster req)
{
_sender.Send(dest, req);
}
public void Send(NodeConnectionInfo dest, DisconnectedFromCluster req)
{
_parent.AddToQueue(this, dest.Name, req);
}
