public virtual void handleIsClusterInStateTransfer(Address sender)
{
Message msg = new Message(sender, null, new byte[0]);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.IS_NODE_IN_STATE_TRANSFER_RSP);
gms.Stack.NCacheLog.Debug("gmsImpl.handleIsClusterInStateTransfer", "(state transfer request) sender: " + sender + " ->" + isInStateTransfer);
hdr.arg = isInStateTransfer;
msg.putHeader(HeaderType.GMS,hdr);
gms.passDown(new Event(Event.MSG,msg,Alachisoft.NCache.Common.Enum.Priority.Critical));
}
internal virtual void sendLeaveMessage(Address coord, Address mbr)
{
Message msg = new Message(coord, null, null);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.LEAVE_REQ, mbr);
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG, msg));
}
internal virtual void sendJoinMessage(Address coord, Address mbr, string subGroup_name, bool isStartedAsMirror)
{
Message msg;
GMS.HDR hdr;
msg = new Message(coord, null, null);
hdr = new GMS.HDR(GMS.HDR.JOIN_REQ, mbr, subGroup_name, isStartedAsMirror);
hdr.GMSId = gms.unique_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG_URGENT, msg, Priority.Critical));
}
/// <summary>
/// Informs the coodinator about the nodes to which this node can not establish connection
/// on receiving the first view.Only the node who has most recently joined the cluster
/// should inform the coodinator other nodes will neglect this event.
/// </summary>
/// <param name="nodes"></param>
public override void handleConnectionFailure(System.Collections.ArrayList nodes)
{
if (nodes != null && nodes.Count > 0)
{
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("ParticipantGmsImp.handleConnectionFailure", "informing coordinator about connection failure with [" + Global.CollectionToString(nodes) + "]");
GMS.HDR header = new GMS.HDR(GMS.HDR.CAN_NOT_CONNECT_TO);
header.nodeList = nodes;
Message msg = new Message(gms.determineCoordinator(),null,new byte[0]);
msg.putHeader(HeaderType.GMS,header);
gms.passDown(new Event(Event.MSG,msg,Priority.Critical));
}
}
public override void handleNodeRejoining(Address node)
{
if (node != null)
{
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("ParticipantGmsImpl.handleNodeRejoining", "I should inform coordinator about node rejoining with " + node);
if (gms.members.contains(node))
{
//inform coordinator about the node rejoining in the cluster.
GMS.HDR header = new GMS.HDR(GMS.HDR.INFORM_NODE_REJOINING, node);
Message rejoiningMsg = new Message(gms.determineCoordinator(), null, new byte[0]);
rejoiningMsg.putHeader(HeaderType.GMS, header);
gms.passDown(new Event(Event.MSG, rejoiningMsg, Priority.Critical));
}
}
}
private void sendMemberLeftNotificationToCoordinator(Address suspected,Address coordinator)
{
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("ParticipantGmsImp.sendMemberLeftNotification", "informing coordinator about abnormal connection breakage with " + suspected);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.CONNECTION_BROKEN, suspected);
Message nodeLeftMsg = new Message(coordinator, null, new byte[0]);
nodeLeftMsg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG, nodeLeftMsg, Priority.Critical));
}
public override void handleConnectedNodesRequest(Address src,int reqId)
{
if (gms.determineCoordinator().Equals(src))
{
ArrayList mbrs = gms.members.Members;
ArrayList suspected = suspected_mbrs.Clone() as ArrayList;
foreach (Address suspect in suspected_mbrs)
{
mbrs.Remove(suspect);
}
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("ParticipantGmsImp.handleConnectedNodesRequest " + gms.local_addr + " --> " + Global.ArrayListToString(mbrs));
Message rspMsg = new Message(src,null,new byte[0]);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.CONNECTED_NODES_RESPONSE,(Object)reqId);
hdr.nodeList = mbrs;
rspMsg.putHeader(HeaderType.GMS,hdr);
gms.passDown(new Event(Event.MSG,rspMsg,Priority.Critical));
}
}
internal virtual void sendMergeCancelledMessage(System.Collections.ArrayList coords, object merge_id)
{
Message msg;
GMS.HDR hdr;
Address coord;
if (coords == null || merge_id == null)
{
gms.Stack.NCacheLog.Error("coords or merge_id == null");
return;
}
for (int i = 0; i < coords.Count; i++)
{
coord = (Address)coords[i];
msg = new Message(coord, null, null);
hdr = new GMS.HDR(GMS.HDR.CANCEL_MERGE);
hdr.merge_id = merge_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG, msg));
}
}
internal virtual void sendSpeicalJoinMessage(Address mbr, ArrayList dests)
{
Message msg;
GMS.HDR hdr;
msg = new Message(null, null, new byte[0]);
msg.Dests = dests;
hdr = new GMS.HDR(GMS.HDR.SPECIAL_JOIN_REQUEST, mbr);
hdr.GMSId = gms.unique_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG_URGENT, msg, Priority.Critical));
}
/// <summary> Send back a response containing view and digest to sender</summary>
internal virtual void sendMergeResponse(Address sender, View view, Digest digest)
{
Message msg = new Message(sender, null, null);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.MERGE_RSP);
hdr.merge_id = merge_id;
hdr.view = view;
hdr.digest = digest;
msg.putHeader(HeaderType.GMS, hdr);
gms.Stack.NCacheLog.Debug("response=" + hdr);
gms.passDown(new Event(Event.MSG, msg));
}
internal virtual void sendMergeRejectedResponse(Address sender)
{
Message msg = new Message(sender, null, null);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.MERGE_RSP);
hdr.merge_rejected = true;
hdr.merge_id = merge_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.Stack.NCacheLog.Debug("response=" + hdr);
gms.passDown(new Event(Event.MSG, msg));
}
/// <summary> Sends the new view and digest to all subgroup coordinors in coords. Each coord will in turn
/// <ol>
/// <li>cast the new view and digest to all the members of its subgroup (MergeView)
/// <li>on reception of the view, if it is a MergeView, each member will set the digest and install
/// the new view
/// </ol>
/// </summary>
internal virtual void sendMergeView(System.Collections.ArrayList coords, MergeData combined_merge_data)
{
Message msg;
GMS.HDR hdr;
Address coord;
View v;
Digest d;
if (coords == null || combined_merge_data == null)
return;
v = combined_merge_data.view;
d = combined_merge_data.digest;
if (v == null || d == null)
{
gms.Stack.NCacheLog.Error("view or digest is null, cannot send consolidated merge view/digest");
return;
}
for (int i = 0; i < coords.Count; i++)
{
coord = (Address)coords[i];
msg = new Message(coord, null, null);
hdr = new GMS.HDR(GMS.HDR.INSTALL_MERGE_VIEW);
hdr.view = v;
hdr.digest = d;
hdr.merge_id = merge_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG, msg));
}
}
/// <summary> Sends a MERGE_REQ to all coords and populates a list of MergeData (in merge_rsps). Returns after coords.size()
/// response have been received, or timeout msecs have elapsed (whichever is first).<p>
/// If a subgroup coordinator rejects the MERGE_REQ (e.g. because of participation in a different merge),
/// <em>that member will be removed from coords !</em>
/// </summary>
/// <param name="coords">A list of Addresses of subgroup coordinators (inluding myself)
/// </param>
/// <param name="timeout">Max number of msecs to wait for the merge responses from the subgroup coords
/// </param>
internal virtual void getMergeDataFromSubgroupCoordinators(System.Collections.ArrayList coords, long timeout)
{
Message msg;
GMS.HDR hdr;
Address coord;
long curr_time, time_to_wait = 0, end_time;
int num_rsps_expected = 0;
if (coords == null || coords.Count <= 1)
{
gms.Stack.NCacheLog.Error("CoordGmsImpl.getMergeDataFromSubgroupCoordinator", "coords == null or size <= 1");
return;
}
lock (merge_rsps.SyncRoot)
{
merge_rsps.Clear();
gms.Stack.NCacheLog.Debug("sending MERGE_REQ to " + Global.CollectionToString(coords));
for (int i = 0; i < coords.Count; i++)
{
coord = (Address)coords[i];
if (gms.local_addr != null && gms.local_addr.Equals(coord))
{
merge_rsps.Add(getMergeResponse(gms.local_addr, merge_id));
continue;
}
msg = new Message(coord, null, null);
hdr = new GMS.HDR(GMS.HDR.MERGE_REQ);
hdr.mbr = gms.local_addr;
hdr.merge_id = merge_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG, msg));
}
// wait until num_rsps_expected >= num_rsps or timeout elapsed
num_rsps_expected = coords.Count;
curr_time = (System.DateTime.Now.Ticks - 621355968000000000) / 10000;
end_time = curr_time + timeout;
while (end_time > curr_time)
{
time_to_wait = end_time - curr_time;
gms.Stack.NCacheLog.Debug("waiting for " + time_to_wait + " msecs for merge responses");
if (merge_rsps.Count < num_rsps_expected)
{
try
{
System.Threading.Monitor.Wait(merge_rsps.SyncRoot, TimeSpan.FromMilliseconds(time_to_wait));
}
catch (System.Exception ex)
{
gms.Stack.NCacheLog.Error("CoordGmsImpl.getMergeDataFromSubgroupCoordinators()", ex.ToString());
}
}
// SAL:
if (time_to_wait < 0)
{
gms.Stack.NCacheLog.Fatal("[Timeout]CoordGmsImpl.getMergeDataFromSubgroupCoordinators:" + time_to_wait);
}
gms.Stack.NCacheLog.Debug("num_rsps_expected=" + num_rsps_expected + ", actual responses=" + merge_rsps.Count);
if (merge_rsps.Count >= num_rsps_expected)
break;
curr_time = (System.DateTime.Now.Ticks - 621355968000000000) / 10000;
}
}
}
public void AskToLeaveCluster(Address leavingMember, string urGmsId)
{
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("CoodGmsImpl.AskToLeaveCluster", leavingMember + " is requested to leave the cluster");
Message msg = new Message(leavingMember, null, new byte[0]);
GMS.HDR hdr = new GMS.HDR(GMS.HDR.LEAVE_CLUSTER, gms.local_addr);
hdr.arg = urGmsId;
msg.putHeader(HeaderType.GMS,hdr);
gms.passDown(new Event(Event.MSG, msg, Priority.Critical)); ;
}
public override void handleInformNodeRejoining(Address sender, Address node)
{
if (node != null)
{
if (gms.Stack.NCacheLog.IsInfoEnabled) gms.Stack.NCacheLog.Info("CoordinatorGmsImpl.handleInformNodeRejoining", sender.ToString() + " informed about rejoining with " + node);
if (gms.members.contains(node))
{
ViewId viewId = gms.GetNextViewId();
GMS.HDR header = new GMS.HDR(GMS.HDR.RESET_ON_NODE_REJOINING, node);
header.view = new View(viewId, gms.members.Clone() as ArrayList);
header.view.CoordinatorGmsId = gms.unique_id;
Message rejoiningMsg = new Message(null, null, new byte[0]);
rejoiningMsg.putHeader(HeaderType.GMS, header);
gms.passDown(new Event(Event.MSG, rejoiningMsg, Priority.Critical));
}
}
}
internal virtual void SendCheckClusterHealth(Address destination, Address coord)
{
Message msg;
GMS.HDR hdr;
msg = new Message(destination, null, null);
hdr = new GMS.HDR(GMS.HDR.RE_CHECK_CLUSTER_HEALTH, coord);
hdr.GMSId = gms.unique_id;
msg.putHeader(HeaderType.GMS, hdr);
gms.passDown(new Event(Event.MSG_URGENT, msg, Priority.Critical));
}
