public Node GetNode(NodeId node_id) {
RTableEntry rte;
if (node_id == null)
return null;
m_RtTable.TryGetValue(node_id.ToString(), out rte);
if (rte != null)
return rte.node;
else
return new Node(node_id, GetCandidates(node_id));
}
public bool GetPing(NodeId nodeid) {
RTableEntry rtable;
if (nodeid != null && m_RtTable.TryGetValue(nodeid.ToString(), out rtable)) {
return rtable.pinging;
}
return false;
}
public bool IsWaitForJoinAnsw(NodeId nodeid) {
RTableEntry rtable;
if (nodeid != null && m_RtTable.TryGetValue(nodeid.ToString(), out rtable)) {
return rtable.wait_for_join_answ;
}
return false;
}
/// <summary>
/// Returns the ice candidates stored in a dicationary along with a nodeid
/// </summary>
/// <param name="nodeid">The Node Id</param>
/// <returns>List<IceCandidate></returns>
/// <summary>
public List<IceCandidate> GetCandidates(NodeId nodeid) {
RTableEntry rtable;
if (nodeid != null && m_RtTable.TryGetValue(nodeid.ToString(), out rtable))
return rtable.icecandidates;
return null;
}
/// <summary>
/// We need the information if a node (nodeid) has already been attached to
/// and is valid. This is stored in the routing table
/// </summary>
/// <param name="nodeid">The Node Id</param>
/// <returns>bool</returns>
public NodeState GetNodeState(NodeId nodeid) {
RTableEntry rtable;
if (nodeid != null && m_RtTable.TryGetValue(nodeid.ToString(), out rtable)) {
return rtable.nodestate;
}
return NodeState.unknown;
}
internal void SetPinging(NodeId nodeId, bool ping, bool success) {
try {
RTableEntry rtable_entry;
lock (m_RtTable) {
if (nodeId != null && m_RtTable.TryGetValue(nodeId.ToString(), out rtable_entry)) {
rtable_entry.pinging = ping;
if (success)
rtable_entry.dtLastSuccessfullPing = DateTime.Now;
}
}
}
catch (Exception ex) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, "SetPinging: " + ex.Message);
}
}
internal void SetWaitForJoinAnsw(NodeId nodeId, Boolean fTrue) {
try {
RTableEntry rtable_entry;
lock (m_RtTable) {
if (nodeId != null && m_RtTable.TryGetValue(nodeId.ToString(), out rtable_entry))
rtable_entry.wait_for_join_answ = fTrue;
}
}
catch (Exception ex) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, "SetWaitForJoinAnsw: " + ex.Message);
}
}
internal void SetNodeState(NodeId nodeId, NodeState nodestate) {
try {
RTableEntry rtable;
lock (m_RtTable) {
if (nodeId != null && m_RtTable.TryGetValue(nodeId.ToString(), out rtable)) {
NodeState oldstate = rtable.nodestate;
switch (rtable.nodestate) {
case NodeState.unknown:
rtable.nodestate = nodestate;
break;
case NodeState.attaching:
rtable.nodestate = nodestate;
break;
case NodeState.attached:
if (nodestate == NodeState.attaching) {
//m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, "SetNodeState: invalid transition from attached to attaching");
//ignore, should only occur on AppAttach
}
else {
if (nodestate == NodeState.attached & m_UpdateReceivedFromUnattachedNode.Contains(nodeId)) {
m_UpdateReceivedFromUnattachedNode.Remove(nodeId);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, "SetNodeState: attached -> updates_received on saved state");
rtable.nodestate = NodeState.updates_received;
}
else
rtable.nodestate = nodestate;
}
break;
case NodeState.updates_received:
//ignore attach messages here
if (nodestate != NodeState.attached && nodestate != NodeState.attaching)
rtable.nodestate = nodestate;
break;
}
if (m_ReloadConfig.State == ReloadConfig.RELOAD_State.Joined
&& (nodestate == NodeState.attached || rtable.nodestate == NodeState.updates_received)
&& (oldstate == NodeState.attaching || oldstate == NodeState.unknown)) {
if (m_predecessors.Contains(nodeId) || m_successors.Contains(nodeId)) {
/* A not approved node stored in successor and predecessor list became valid (attached).
* This is a trigger to send an update to all (valid) neighbors
*/
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_BUG, String.Format("AddNode: New approved neighbor, send updates to all"));
SendUpdateToAllNeighbors();
}
}
}
else {
if (nodestate == NodeState.updates_received) {
/* bad situation, we received an update but probably no attach answ so far
* save this info for later use */
m_UpdateReceivedFromUnattachedNode.Add(nodeId);
}
}
}
}
catch (Exception ex) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, "SetNodeState: " + ex.Message);
}
}
public bool Leave(NodeId nodeId) {
/*
* A node leaves the overlay, do we have to notify the neighbors?
* (Which is the case if this node was part of our lists)
*/
bool fUpdateNeeded = false;
bool fWasAdmittingPeer = false;
bool fEvaluateReplicas = false;
SetNodeState(nodeId, NodeState.unknown);
if (m_ReloadConfig.AdmittingPeer != null && m_ReloadConfig.AdmittingPeer.Id != null)
if (nodeId == m_ReloadConfig.AdmittingPeer.Id) {
m_ReloadConfig.AdmittingPeer = null;
fWasAdmittingPeer = true;
}
if (m_successors.Contains(nodeId)) {
int index = m_successors.IndexOf(nodeId);
m_successors.Remove(nodeId);
// Leaving nodes will be stored for 5 minutes to make sure we do not learn about them again
AddLeavingNode(nodeId);
fUpdateNeeded = true;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ALL, String.Format("Deleted {0} from Successors", nodeId));
// Has Successor 1 or 2 crashed? Do we need to send out a new store request for replicas?
if (index < 2 && m_successors.Count > 1)
Arbiter.Activate(m_ReloadConfig.DispatcherQueue, new IterativeTask<NodeId>(m_successors[1], m_transport.StoreReplicas));
}
if (m_predecessors.Contains(nodeId)) {
int index = m_predecessors.IndexOf(nodeId);
if (index == 0)
fEvaluateReplicas = true;
m_predecessors.Remove(nodeId);
AddLeavingNode(nodeId);
fUpdateNeeded = true;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ALL, String.Format("Deleted {0} from Predecessors", nodeId));
if (fEvaluateReplicas == true)
m_transport.EvaluateReplicas();
}
foreach (FTableEntry fte in FingerTable)
if (fte.Successor == nodeId) {
fte.Successor = null;
fte.valid = false;
}
if (m_RtTable.ContainsKey(nodeId.ToString()))
{
m_RtTable.Remove(nodeId.ToString());
AddLeavingNode(nodeId);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ALL, String.Format("Deleted {0} from Routing Table", nodeId));
fUpdateNeeded = true;
}
if (fUpdateNeeded && !m_ReloadConfig.IamClient) {
SendUpdateToAllNeighbors();
}
if (fWasAdmittingPeer) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_WARNING, String.Format("Lost admitting peer {0}: starting prejoin procedure", nodeId));
Arbiter.Activate(m_DispatcherQueue, new IterativeTask<List<BootstrapServer>>(m_ReloadConfig.ThisMachine.BootstrapServer, m_ReloadConfig.ThisMachine.Transport.PreJoinProdecure));
}
return fWasAdmittingPeer;
}
private IEnumerator<ITask> Receive(Socket socketClient, NodeId nodeid) {
if (socketClient == null) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("SimpleFLM: Receive: socket == null!!!"));
yield break;
}
if (!socketClient.Connected) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("SimpleFLM: << {0} receive, but client is not connected", socketClient.RemoteEndPoint));
HandleRemoteClosing(socketClient);
yield break;
}
while (socketClient != null && m_ReloadConfig.State < ReloadConfig.RELOAD_State.Exit) {
byte[] buffer = new byte[ReloadGlobals.MAX_PACKET_BUFFER_SIZE * ReloadGlobals.MAX_PACKETS_PER_RECEIVE_LOOP];
var iarPort = new Port<IAsyncResult>();
int bytesReceived = 0;
try {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET, String.Format("SimpleFLM: << {0} BeginReceive", socketClient == null ? "null" : socketClient.RemoteEndPoint.ToString()));
socketClient.BeginReceive(
buffer,
0,
buffer.Length,
SocketFlags.None, iarPort.Post, null);
}
catch (Exception ex) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("SimpleFLM: << {0} BeginReceive", socketClient == null ? "null" : socketClient.RemoteEndPoint.ToString()) + ex.Message);
}
yield return Arbiter.Receive(false, iarPort, iar => {
try {
if (iar != null)
bytesReceived = socketClient.EndReceive(iar);
}
catch (Exception ex) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO,
String.Format("SimpleFLM: << {0} Receive: {1} ",
nodeid == null ? "" : nodeid.ToString(), ex.Message));
}
if (bytesReceived <= 0) {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET,
String.Format("SimpleFLM: << {0} Receive: lost connection, closing socket",
socketClient.RemoteEndPoint));
HandleRemoteClosing(socketClient);
socketClient.Close();
socketClient = null;
return;
}
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET,
String.Format("SimpleFLM: << {0} Read {1} bytes from {2}",
socketClient.RemoteEndPoint,
bytesReceived, nodeid == null ? "" : nodeid.ToString()));
m_ReloadConfig.Statistics.BytesRx = (UInt64)bytesReceived;
#if CONNECTION_MANAGEMENT
/* beginn connection management */
long bytesProcessed = 0;
SimpleOverlayConnectionTableElement socte = null;
if (ReloadGlobals.Framing) {
foreach (KeyValuePair<string, SimpleOverlayConnectionTableElement> pair in m_connection_table) {
if (socketClient == pair.Value.AssociatedSocket) {
socte = pair.Value;
break;
}
}
if (socte == null)
socte = new SimpleOverlayConnectionTableElement();
Array.Resize(ref buffer, bytesReceived);
buffer = analyseFrameHeader(socte, buffer);
bytesReceived = buffer.Length;
}
ReloadMessage reloadMsg = null;
if (buffer != null) {
reloadMsg = new ReloadMessage(m_ReloadConfig).FromBytes(buffer,
ref bytesProcessed, ReloadMessage.ReadFlags.full);
}
if (socketClient != null && reloadMsg != null) {
if (nodeid == null)
nodeid = reloadMsg.LastHopNodeId;
if (nodeid != null)
if (m_connection_table.ContainsKey(nodeid.ToString())) {
SimpleOverlayConnectionTableElement rcel = m_connection_table[
nodeid.ToString()];
rcel.LastActivity = DateTime.Now;
}
else {
SimpleOverlayConnectionTableElement rcel = socte;
if (rcel == null)
rcel = new SimpleOverlayConnectionTableElement();
rcel.NodeID = reloadMsg.LastHopNodeId;
rcel.AssociatedSocket = socketClient;
/*
* tricky: if this is an answer, this must be issued by an
* outgoing request before (probably the first
* bootstrap contact, where we have no nodeid from)
*/
rcel.Outbound = !reloadMsg.IsRequest();
rcel.LastActivity = rcel.Start = DateTime.Now;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET,
String.Format("SimpleFLM: << {0} Receive: Associating node {1}",
socketClient.RemoteEndPoint, rcel.NodeID.ToString()));
lock (m_connection_table) {
if (nodeid != m_ReloadConfig.LocalNodeID) {
if (!m_connection_table.ContainsKey(rcel.NodeID.ToString()))
m_connection_table.Add(rcel.NodeID.ToString(), rcel);
else
m_connection_table[rcel.NodeID.ToString()] = rcel;
}
}
}
/* end connection management */
if (ReloadFLMEventHandler != null) {
//there might by more then one packet inside
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET,
String.Format("SimpleFLM: << {0} <== {1} {2}, TransID={3:x16}", socketClient.RemoteEndPoint, reloadMsg.reload_message_body.RELOAD_MsgCode.ToString(), nodeid.ToString(), reloadMsg.TransactionID));
ReloadFLMEventHandler(this, new ReloadFLMEventArgs(
ReloadFLMEventArgs.ReloadFLMEventTypes.RELOAD_EVENT_RECEIVE_OK,
null, reloadMsg));
if (bytesProcessed != bytesReceived) {
long bytesProcessedTotal = 0;
string lastMsgType = "";
while (reloadMsg != null
&& bytesProcessedTotal < bytesReceived) {
//in - offset out - bytesprocessed
bytesProcessed = bytesProcessedTotal;
//TKTODO add framing handling here
reloadMsg = new ReloadMessage(m_ReloadConfig).FromBytes(
buffer, ref bytesProcessed, ReloadMessage.ReadFlags.full);
// Massive HACK!!! offset of TCP messages is set wrong TODO!!!
int offset = 0;
while (reloadMsg == null) {
offset++;
bytesProcessedTotal++;
bytesProcessed = bytesProcessedTotal;
reloadMsg = new ReloadMessage(m_ReloadConfig).FromBytes(
buffer, ref bytesProcessed, ReloadMessage.ReadFlags.full);
if (reloadMsg != null)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
String.Format("Last message type: {0}, offset: {1}",
lastMsgType, offset));
}
ReloadFLMEventHandler(this, new ReloadFLMEventArgs(
ReloadFLMEventArgs.ReloadFLMEventTypes.RELOAD_EVENT_RECEIVE_OK,
null, reloadMsg));
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET,
String.Format("SimpleFLM: << {0} <== {1} {2}, TransID={3:x16}",
socketClient.RemoteEndPoint,
reloadMsg.reload_message_body.RELOAD_MsgCode.ToString(),
nodeid.ToString(),
reloadMsg.TransactionID));
bytesProcessedTotal += bytesProcessed;
lastMsgType = reloadMsg.reload_message_body.RELOAD_MsgCode.ToString();
}
}
}
}
else {
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
String.Format("SimpleFLM: << {0} Receive: Dropping invalid packet,"+
"bytes received: {1}", socketClient.RemoteEndPoint, bytesReceived));
}
#endif
#if !CONNECTION_MANAGEMENT
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET, String.Format("SimpleFLM: << {0} Receive: Closing socket", client.RemoteEndPoint));
if(client.Connected)
client.Shutdown(SocketShutdown.Both);
client.Close();
#endif
});
}
}
private int responsibleNodeByLevel(int level, NodeId id) //TODO:DONE?!
{
NodeId max = new NodeId();
max = max.Max();
NodeId upperbound = new NodeId();
upperbound = upperbound.Min();
int i = 0;
do {
//if (level == 0)
// break; //only one node at level 0
NodeId temp = (max) >> (level);
upperbound = upperbound + ((temp)) + 1;
if (id < upperbound || upperbound==(new NodeId()).Min())//upperbound==(new NodeId()).Min() for level 0 and last node at level where upperbound overflows to 0
break;
i++;
} while (upperbound.Data[0] != 0x00);
machine.ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_REDIR, String.Format("REDIR: NodeId: " + id.ToString() + " Level: " + level + " => upper bound: " + upperbound.ToString() + " Node: " + i));
return i;
}
private void deliverResult(ResourceId resid, string nameSpace, NodeId id) {
if (nameSpace == null) {
if (ReDiRLookupFailed != null)
ReDiRLookupFailed(m_nameSpace);
machine.ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_REDIR, "ReDiR: No Result for " + resid);
}
else {
if ( ReDiRLookupCompleted != null)
ReDiRLookupCompleted(nameSpace, id);
machine.ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_REDIR, "ReDiR: Result for " + resid + " : nameSpace=" + nameSpace + "ID=" + id.ToString());
}
}