/// <summary>
/// Called to initialize the list of RAPS.
/// </summary>
/// <param name="listEndpoints">List of (addr,NodeDetails) pairs typically ex ParseConfigFile().</param>
/// <returns></returns>
public List<RAP> InitListRap(List<Endpoint> listEndpoints)
{
ValidateState(RateControllerState.Init, "InitTrafficMatrix");
if (listEndpoints.Count == 0)
throw new ArgumentException("err: input cannot have zero length.");
if (IsMatrixGenerated)
throw new ApplicationException("err: InitListRap() can only be called once.");
matrixDimension = listEndpoints.Count;
//
// Setup TCP connection to each network agent and then register with each network agent.
// Each row in table represents a VM, so all entries in a row use the same network agent.
//
foreach (Endpoint ep in listEndpoints)
{
Connection conn;
string serverName = ep.FilterServer;
if (ep.IsOktofsH && !AgentNameToConn.TryGetValue(serverName, out conn))
{
conn = new Connection(this, serverName, 0, AgentPort);
AgentNameToConn.Add(serverName, conn);
MessageRegister mRegister = new MessageRegister(++SeqNo, TenantId, AlertVec);
const MessageTypes replyType = MessageTypes.MessageTypeRegisterAck;
const int typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
// Registration messages actually sent sequentially, but using parallel paradigm.
// This because SendSequential will break if interleaved with alerts.
SendParallel(conn, mRegister.Serialize, replyType, mRegister.SeqNo);
conn.BeginReceive();
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
}
}
}
foreach (Endpoint ep in listEndpoints)
{
Connection conn;
string hyperVName = ep.HyperVserver;
//
// Connections to remote OktofsAgent socket apps.
//
if ((ep.IsOktofsC || ep.IsOktofsH) && !AgentNameToConn.TryGetValue(hyperVName, out conn))
{
conn = new Connection(this, hyperVName, 0, AgentPort);
AgentNameToConn.Add(hyperVName, conn);
MessageRegister mRegister = new MessageRegister(++SeqNo, TenantId, AlertVec);
const MessageTypes replyType = MessageTypes.MessageTypeRegisterAck;
const int typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
// Registration messages actually sent sequentially, but using parallel paradigm.
// This because SendSequential will break if interleaved with alerts.
SendParallel(conn, mRegister.Serialize, replyType, mRegister.SeqNo);
conn.BeginReceive();
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
}
}
//
// Connections to remote IoFlow socket apps.
//
if (ep.IsIoFlowD && !IoFlowNameToConn.TryGetValue(hyperVName, out conn))
{
conn = new Connection(this, hyperVName, 0, Parameters.IOFLOWAGENT_TCP_PORT_NUMBER);
IoFlowNameToConn.Add(hyperVName, conn);
MessageRegister mRegister = new MessageRegister(++SeqNo, TenantId, AlertVec);
const MessageTypes replyType = MessageTypes.MessageTypeRegisterAck;
const int typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
// Registration messages actually sent sequentially, but using parallel paradigm.
// This because SendSequential will break if interleaved with alerts.
SendParallel(conn, mRegister.Serialize, replyType, mRegister.SeqNo);
conn.BeginReceive();
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
}
}
}
//
// NT account names in the config file need to be translated into SIDs.
// This because SIDS in config files are too unfriendly and error-prone.
// Names and SIDS from an untrusted NT domain are legit, e.g. VMs in a workgroup.
// Such names cannot be resolved locally, so ask the Hyper-V server to do it for us.
// If the Hyper-V server is unknown, e.g. H-only config., config must use valid SIDS.
//
//
// Ask Hyper-V servers to translate VM names to SIDS in case VM in untrusted NT domain.
//
Dictionary<string, Connection> DictIoFlowVmLookup = new Dictionary<string, Connection>(); // Any not resolved by Oktofs agent.
foreach (Endpoint nDtls in listEndpoints)
{
// Nothing to do if config file claims to know the correct string SID.
if (nDtls.SidOrAccount.ToUpper().StartsWith("S-1-5-"))
continue;
// Only attempt SID translation at Hyper-V servers i.e. at point C in stack.
if (!nDtls.Tag.ToUpper().Contains("-VM-SHARE-VOL") &&
!nDtls.Tag.ToUpper().Contains("-VM-FILE-VOL") )
continue;
// Maybe we already queried this SID with the given Hyper-V server.
string VmKey = MakeVmKey(nDtls.HyperVserver, nDtls.SidOrAccount);
if (DictVmNameToSid.ContainsKey(VmKey))
{
nDtls.StringSid = DictVmNameToSid[VmKey];
continue;
}
// Ask remote Hyper-V server for the sid: our DC may not trust VMs NT domain (e.g. workgroup).
Connection conn = null;
if (AgentNameToConn.TryGetValue(nDtls.HyperVserver, out conn))
{
MessageNameToStringSidQuery mQuerySid =
new MessageNameToStringSidQuery(++SeqNo, (uint)nDtls.SidOrAccount.Length, nDtls.SidOrAccount);
const MessageTypes replyType = MessageTypes.MessageTypeNameToStringSidReply;
const int typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
// For now (dbg) VmName to SID translation messages actually sent sequentially.
SendParallel(conn, mQuerySid.Serialize, replyType, mQuerySid.SeqNo);
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
}
// Fatal error if SidQuery failed to update DictVmNameToSid.
if (!DictVmNameToSid.ContainsKey(VmKey))
throw new ApplicationException(String.Format("Panic: failed to get SID for {0}", VmKey));
continue;
}
// If we are using IoFlowAgent but not an OktoFsAgent try the IoFlowagent for the sid.
if (IoFlowNameToConn.TryGetValue(nDtls.HyperVserver, out conn))
{
if (!DictIoFlowVmLookup.ContainsKey(nDtls.SidOrAccount)){
DictIoFlowVmLookup.Add(nDtls.SidOrAccount, conn);
}
}
}
// Any unresolved Vm-to-sid lookups are attempted via IoFlow network agent in batches in parallel.
if (DictIoFlowVmLookup.Count != 0)
{
const MessageTypes replyType = MessageTypes.MessageTypeNameToStringSidBatchReply;
const int typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
foreach (Connection conn in IoFlowNameToConn.Values)
{
List<string> listVmNames = new List<string>();
foreach (KeyValuePair<string, Connection> kvp in DictIoFlowVmLookup)
if (kvp.Value == conn)
listVmNames.Add(kvp.Key);
MessageNameToStringSidBatchQuery bq =
new MessageNameToStringSidBatchQuery(++SeqNo, listVmNames);
SendParallel(conn, bq.Serialize, replyType, bq.SeqNo);
}
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
} // lock
}
//
// Set the SID for each RAP. Any trusted account names will be translated to SIDS at agent.
//
foreach (Endpoint nDtls in listEndpoints)
{
if (nDtls.SidOrAccount.ToUpper().StartsWith("S-1-5-"))
nDtls.StringSid = nDtls.SidOrAccount.ToUpper();
else if (nDtls.Tag.ToUpper().Equals("H-HYPERV-VOL"))
nDtls.StringSid = nDtls.SidOrAccount.ToUpper();
else
nDtls.StringSid = DictVmNameToSid[MakeVmKey(nDtls.HyperVserver, nDtls.SidOrAccount)];
}
//
// Initialize RAPs and RAP lookup, and point Connections at each RAP.
// More than one Connection may ref a RAP (e.g. Oktofs and IoFlow both).
// Note RAPs not yet bound to flows.
//
ListRap = new List<RAP>();
for (int i = 0; i < listEndpoints.Count; i++)
{
string locServername = listEndpoints[i].FilterServer;
RAP rap = new RAP(listEndpoints[i], listEndpoints[i]);
Connection conn = null;
if (AgentNameToConn.TryGetValue(locServername, out conn))
conn.ListRap.Add(rap);
if (IoFlowNameToConn.TryGetValue(locServername, out conn))
conn.ListRap.Add(rap);
DictEpKeyToRap[listEndpoints[i].Key] = rap;
ListRap.Add(rap);
}
Console.WriteLine("InitListRap made {0} RAPs", ListRap.Count);
return ListRap;
}
public string SendMessageSidQuery(string accountName)
{
string stringSid = null;
if (conn == null)
return null;
uint sn = ++SeqNo;
MessageNameToStringSidQuery msg = new MessageNameToStringSidQuery(sn, (uint)accountName.Length, accountName);
int countBytesToSend = msg.Serialize(conn.sendBuffer, 0);
int countBytesSent = conn.Send(conn.sendBuffer, 0, countBytesToSend);
if (countBytesSent != countBytesToSend)
{
Console.WriteLine("SendMessageSidQuery Err: attempt {0} sent {1}.", countBytesToSend, countBytesSent);
return null;
}
messageVmNameToStringSidReply = null;
autoResetEvent.Reset();
conn.BeginReceive();
bool timedOut = !autoResetEvent.WaitOne(TIMEOUT_MILLISECS);
if (timedOut)
return null;
if (messageVmNameToStringSidReply.SeqNo != sn)
{
Console.WriteLine("qSid seqno mismatch: expected {0} obtained {1}", sn, messageVmNameToStringSidReply.SeqNo);
}
else
{
//Console.WriteLine("qSid {0}", messageVmNameToStringSidReply.SidString);
stringSid = messageVmNameToStringSidReply.SidString;
}
return stringSid;
}
public static MessageNameToStringSidQuery CreateFromNetBytes(byte[] buffer, int offset)
{
MessageNameToStringSidQuery msg = new MessageNameToStringSidQuery();
msg.Length = (uint)Utils.Int32FromNetBytes(buffer, offset); offset += 4;
msg.SeqNo = (uint)Utils.Int32FromNetBytes(buffer, offset); offset += 4;
msg.MessageType = buffer[offset++];
msg.VmNameCzLen = (uint)Utils.Int32FromNetBytes(buffer, offset); offset += 4;
Encoding Enc = UTF8Encoding.UTF8;
msg.VmName = Enc.GetString(buffer, offset, Parameters.OKTO_VM_NAME_MAX_CHARS);
msg.VmName = msg.VmName.Substring(0, (int)msg.VmNameCzLen);
offset += Parameters.OKTO_VM_NAME_MAX_CHARS;
return msg;
}