/// <summary>
/// Splits messages into various lists of in and out message destined for different nodes.
/// </summary>
/// <param name="messages"></param>
/// <returns></returns>
internal NodeWithMessagesCollection DistributeMessages(IList <RelayMessage> messages)
{
NodeWithMessagesCollection distribution = new NodeWithMessagesCollection();
RelayMessage message;
Node node;
for (int i = 0; i < messages.Count; i++)
{
if (messages[i] != null)
{
message = messages[i];
RelayMessage interZoneMessage = null;
SimpleLinkedList <Node> nodesForMessage = GetNodesForMessage(message);
SimpleLinkedList <Node> nodesForInterZoneMessage = null;
if (nodesForMessage.Count > 0)
{
message.AddressHistory.Add(MyIpAddress);
}
message.RelayTTL--;
#region Identify InterZone Messages
if (message.IsTwoWayMessage == false)
{
message.ResultOutcome = RelayOutcome.Queued; //will be queued, if sync will not get overwritten
// Identify nodes in foreign zones
int nodeCount = nodesForMessage.Count;
for (int nodeIndex = 0; nodeIndex < nodeCount; nodeIndex++)
{
nodesForMessage.Pop(out node);
if (_myNodeDefinition != null && _myNodeDefinition.Zone != node.NodeDefinition.Zone)
{
// Message needs to cross Zone bounderies
if (interZoneMessage == null)
{
interZoneMessage = RelayMessage.CreateInterZoneMessageFrom(message);
nodesForInterZoneMessage = new SimpleLinkedList <Node>();
}
nodesForInterZoneMessage.Push(node);
}
else
{
nodesForMessage.Push(node);
}
}
}
#endregion
if (nodesForMessage.Count > 0)
{
DebugWriter.WriteDebugInfo(message, nodesForMessage);
distribution.Add(message, nodesForMessage);
}
if (nodesForInterZoneMessage != null && nodesForInterZoneMessage.Count > 0)
{
DebugWriter.WriteDebugInfo(interZoneMessage, nodesForInterZoneMessage);
distribution.Add(interZoneMessage, nodesForInterZoneMessage);
}
}
}
return(distribution);
}
internal SimpleLinkedList <Node> GetNodesForMessage(RelayMessage message)
{
SimpleLinkedList <Node> nodes = null;
if (message == null || message.RelayTTL < 1 || NodeGroups == null)
{
return(new SimpleLinkedList <Node>());
}
const bool useLegacySerialization = true;
//commands that, from out of system, route to all groups
if (message.IsGroupBroadcastMessage)
{
message.PrepareMessageToBeSent(useLegacySerialization);
if (MyNodeGroup == null) //out of system: all groups
{
nodes = new SimpleLinkedList <Node>();
for (int groupIndex = 0; groupIndex < this.NodeGroups.Count; groupIndex++)
{
nodes.Push(NodeGroups[groupIndex].GetNodesForMessage(message));
}
}
else //In system: my group
{
nodes = MyNodeGroup.MyCluster.GetNodesForMessage(message);
}
}
else
{
//Commands that always route to a single group
NodeGroup group = GetNodeGroup(message.TypeId);
if (group != null)
{
message.PrepareMessageToBeSent(group.GroupDefinition.LegacySerialization);
nodes = group.GetNodesForMessage(message);
}
else
{
message.PrepareMessageToBeSent(useLegacySerialization);
if (_log.IsErrorEnabled)
{
_log.ErrorFormat("No group found for {0}", message);
}
nodes = new SimpleLinkedList <Node>();
}
}
if (nodes == null)
{
nodes = new SimpleLinkedList <Node>();
}
// If no nodes are returned, we predict that the caller
// will drop the message. Therefore we call the notification delegate.
// This is admittedly a kludgy solution, but the only one
// available without changing this method's signature.
// A better solution should be adopted. [tchow 01/29/2008]
if (nodes.Count == 0)
{
Forwarder.RaiseMessageDropped(message);
}
return(nodes);
}
