public virtual void castViewChange(View new_view, Digest digest)
{
Message view_change_msg;
HDR hdr;
Stack.NCacheLog.Debug("pb.GMS.castViewChange()", "mcasting view {" + new_view + "} (" + new_view.size() + " mbrs)\n");
if (new_view != null)
new_view.BridgeSourceCacheId = impl.UniqueId;
view_change_msg = new Message(); // bcast to all members
hdr = new HDR(HDR.VIEW, new_view);
hdr.digest = digest;
view_change_msg.putHeader(HeaderType.GMS, hdr);
view_change_msg.Dests = new_view.Members.Clone() as ArrayList;
if(stack.NCacheLog.IsInfoEnabled) Stack.NCacheLog.Info("CastView.Watch", "Count of members: " + new_view.Members.Count.ToString());
//TODO: we need to handle scenario when we dont recive castView change from a node
_promise = new ViewPromise(new_view.Members.Count);
bool waitForViewAcknowledgement = true ;
if (!new_view.containsMember(local_addr)) //i am leaving
{
waitForViewAcknowledgement = false;
if (Stack.NCacheLog.IsInfoEnabled) Stack.NCacheLog.Info("GMS.castViewChange()", "I am coordinator and i am leaving");
passDown(new Event(Event.MSG, view_change_msg, Priority.Critical));
}
else
passDown(new Event(Event.MSG, view_change_msg, Priority.Critical));
if (waitForViewAcknowledgement)
{
_promise.WaitResult(_castViewChangeTimeOut);
if (!_promise.AllResultsReceived()) //retry
{
view_change_msg.Dests = new_view.Members.Clone() as ArrayList;
passDown(new Event(Event.MSG, view_change_msg, Priority.Critical));
_promise.WaitResult(_castViewChangeTimeOut);
}
if (_promise.AllResultsReceived())
{
Stack.NCacheLog.CriticalInfo("GMS.castViewChange()", "View applied");
}
}
}
