public object BlockingRMIRequest(NodeRMI rmi)
{
//Find the target node
var targetNode = HostClient.Instance.NodeForId(rmi.NodeID);
if (targetNode == null) throw new NodeNotExistException();
using (var ms = new MemoryStream())
{
Serializer.Serialize(ms, rmi);
HostClient.Instance.Send(HostClient.Instance.BuildMessage(MessageIdentifier.RMIInvoke, ms.ToArray(), true));
}
var returnType = targetNode.RMIResolvedType.GetMethod(rmi.MethodName).ReturnType;
if (returnType == typeof(void)) return null;
//Wait for a response
int time = 0;
while (!rmiResponses.ContainsKey(rmi.RequestID))
{
Thread.Sleep(50);
time++;
if (time > 400)
throw new NodeRMITimeoutException();
}
var response = rmiResponses[rmi.RequestID];
rmiResponses.Remove(rmi.RequestID);
return response.DeserializeReturnValue();
}
public void ProcessRMI(NodeRMI rmi)
{
var nodeInstance = Nodes.Keys.FirstOrDefault(e => e.Id == rmi.NodeID);
if (nodeInstance == null) return;
var instance = Nodes[nodeInstance];
//Find the method
var method = nodeInstance.RMIResolvedType.GetMethod(rmi.MethodName);
var result = method.Invoke(instance, rmi.DeserializeArguments());
if (method.ReturnType == typeof(void)) return;
rmi.SerializeReturnValue(result);
HostClient.Instance.ProcessRMIResponse(rmi);
}
/// <summary>
/// Route a RMI request to the host with the target node
/// </summary>
/// <param name="rmi"></param>
/// <param name="destoNode"> </param>
public void RouteRMIRequest(NodeRMI rmi, NodeInfo destoNode)
{
if(destoNode.HostID.Length == 1)
{
rmi.SerializeReturnValue(destoNode.RMIResolvedType.GetMethod(rmi.MethodName).Invoke(controller, rmi.DeserializeArguments()));
RouteRMIResponse(rmi);
return;
}
var destoHost = HostCache.FindHost(destoNode.HostID);
SendTo(destoHost.Info, destoHost.BuildMessage(MessageIdentifier.RMIInvoke, rmi.Serialize()));
}
/// <summary>
/// Route a RMI response to the host.
/// </summary>
/// <param name="rmi"></param>
public void RouteRMIResponse(NodeRMI rmi)
{
var target = NodePool.Instance.NodeForId(rmi.SNodeID);
if(target == null)
{
log.Debug("RMI response "+rmi.RequestID+" dropped as the initiator doesn't exist anymore.");
return;
}
var targetHost = HostCache.FindHost(target.HostID);
SendTo(targetHost.Info, targetHost.BuildMessage(MessageIdentifier.RMIResponse, rmi.Serialize()));
}
