void UpdateClusterInformation(ClusterInfo clusterInfo)
{
lock (_lock)
{
if (clusterInfo.Id == Guid.Empty || _clusterId == clusterInfo.Id || _previousClusterId == clusterInfo.Id)
{
return;
}
_previousClusterId = _clusterId;
_throwOnNodeError = false;
// Lock configuration since it's shared with all clients created by GetClient on the configuration.
lock (Configuration)
{
Configuration.Host = clusterInfo.MasterHost;
Configuration.Port = clusterInfo.MasterPort;
Nodes.Clear();
MasterNode = (RemoteEngineClient <T>)Configuration.GetClient <T>();
foreach (var hostAndPort in clusterInfo.Slaves)
{
var host = hostAndPort.Key;
var port = hostAndPort.Value;
CreateNode(host, port);
}
}
_clusterId = clusterInfo.Id;
}
}
object Execute <TMessage>(RemoteEngineClient <T> node, TMessage objectToExecute)
{
object result = null;
var request = new ClusterExecuteRequest(_clusterId, objectToExecute);
try
{
result = node.SendAndRecieve(request);
}
catch (WrongNodeException e)
{
lock (_lock)
{
node = GetNode(e.Host, e.Port);
}
return(Execute(node, objectToExecute));
}
catch (Exception e)
{
if (e is SocketException || e is IOException)
{
lock (_lock)
{
RemoveNode(node);
node = MasterNode;
}
return(Execute(node, objectToExecute));
}
throw;
}
if (result is ClusterExecuteResponse)
{
var msg = result as ClusterExecuteResponse;
if (msg.ClusterUpdated)
{
UpdateClusterInformation(msg.ClusterInfo);
}
return(msg.Payload);
}
throw new NotSupportedException("Format of returned data is unexpected.");
}
void RemoveNode(RemoteEngineClient <T> node)
{
var nodeIndex = Nodes.IndexOf(node);
if (nodeIndex >= 0)
{
Nodes.Remove(node);
}
if ((nodeIndex == 0 || Nodes.Count == 0))
{
if (_throwOnNodeError)
{
throw new NotSupportedException("Lost connection to master.");
}
_throwOnNodeError = true;
ResetConnection();
}
}
public void ResetConnection()
{
_clusterId = Guid.Empty;
_previousClusterId = Guid.Empty;
MasterNode = (RemoteEngineClient <T>)Configuration.GetClient <T>();
}
