/// <summary>
/// Will capture a snapshot of the specified (or default) VMs. This includes what each
/// EPRInstance is doing - and then that information is recorded to an xml file so that it
/// can be re-loaded (-Load option).
/// </summary>
/// <param name="pHosts">List of VM's to snapshot</param>
/// <param name="pSnap">Name of the snapshot file</param>
static void CaptureSnapshot(List <HostVM> pHosts, string pSnap)
{
//---------------------------------------------------------------------------------------------------------
// We want the filename to always use .xml as an extension. So - if the filename does not end in .xml -
// append .xml to the filename. Then, if the file exists, just delete it. If we need to have a dialog
// confirming the overwrite, will add it later.
string _extension = Path.GetExtension(pSnap);
if (string.Compare(_extension, @".xml", true) != 0)
{
GenUtils.Exclaim("Snapshot file name must use .xml extension. Appending .xml to " + pSnap);
pSnap += ".xml";
}
if (File.Exists(pSnap))
{
File.Delete(pSnap);
}
//---------------------------------------------------------------------------------------------------------
// This is pretty straightforward here. Just build the file and write it. This way is not as elegent,
// but has other advantages - such as being very clear what we are doing and why.
using (StreamWriter _ss = new StreamWriter(pSnap))
{
_ss.WriteLine("<EPRSnapShot>");
foreach (HostVM _vm in pHosts)
{
// if(_vm.Ready)
// {
_ss.WriteLine("<EPRHost HostName=\"" + _vm.HostName + "\">");
foreach (EPRInstance _epr in _vm.EPRs)
{
if (_epr.InUse)
{
_ss.WriteLine("<EPRInstance EPR=\"{0}\" Profile=\"{1}\" Protocols=\"{2}\" />",
_epr.IPAddress, _epr.Profile, _epr.ProtocolString);
}
else
{
_ss.WriteLine("<EPRInstance EPR=\"{0}\" />", _epr.IPAddress);
}
}
_ss.WriteLine("</EPRHost>");
// }
}
_ss.WriteLine("</EPRSnapShot>");
}
}
/// <summary>
/// Constructor. Build the runtime environment that is based on the command line args.
/// </summary>
/// <param name="pArgs">Command Line Args</param>
public Options(string[] pArgs)
{
protocolMap = new Dictionary <string, Protocol>()
{
{ "EWS", Protocol.Ews },
{ "LEDM", Protocol.LEDM },
{ "SNMP", Protocol.SNMP },
{ "OXPD", Protocol.OXPd },
{ "WEBSERVICES", Protocol.WebServices },
{ "WSDISCOVERY", Protocol.WSDiscovery }
};
StartNum = 0;
IsJedi = IsOz = IsForce = TakeSnapshot = UseSnapshot = false;
GenUtils.LogFile = DEFAULT_LOGFILE;
int _ndx = Array.FindIndex(pArgs, s => s.IndexOf(@"-Log", StringComparison.OrdinalIgnoreCase) >= 0);
if (_ndx >= 0)
{
GenUtils.LogFile = (++_ndx) < pArgs.Length ? pArgs[_ndx] : DEFAULT_LOGFILE;
}
try
{
using (System.IO.StreamWriter _file = new System.IO.StreamWriter(GenUtils.LogFile, false))
{
_file.Write("{0:yyyyMMddHHmmss.fff} : Start ManageEPRs", DateTime.Now);
foreach (string _token in pArgs)
{
_file.Write(" " + _token);
}
_file.WriteLine();
}
}
catch (Exception _ex)
{
GenUtils.LogFile = null;
GenUtils.Exclaim("Logging Disabled. Cannot Write to Log File :: " + _ex.Message);
}
findAction(pArgs);
findList(pArgs);
ForceStart = Array.FindIndex(pArgs, s => s.IndexOf(@"-Skip", StringComparison.OrdinalIgnoreCase) >= 0) < 0;
AllowMix = Array.FindIndex(pArgs, s => s.IndexOf(@"-AllowMix", StringComparison.OrdinalIgnoreCase) >= 0) >= 0;
SetWorkerThreads(pArgs);
VMs = new List <string>();
if (((Action == ToolActions.NoAction) && (ListAction == ToolActions.NoAction)) && (!TakeSnapshot))
{
throw new Exception("There are no valid actions specified?");
}
findVMs(pArgs);
if (VMs.Count == 0)
{
GenUtils.Exclaim("No VMs specified. Will Load and utilize all default VMs.");
defaultVMs(Program.HOSTSFILE);
}
if (Action == ToolActions.Start)
{
findProfile(pArgs);
findStartNum(pArgs);
IsForce = Array.FindIndex(pArgs, s => s.IndexOf(@"-Force", StringComparison.OrdinalIgnoreCase) >= 0) >= 0;
}
findProtocols(pArgs);
}
/// <summary>
/// Will read in a snapshot file and then exactly duplicate that snapshot on all specified VM's
/// (if they are also in the snapshot file), or on all VM's that were in the snapshot file
/// </summary>
/// <param name="pHosts">List of VMs to load (specified or from the xml file)</param>
/// <param name="pSnap"></param>
static void LoadSnapShot(List <HostVM> pHosts, string pSnap)
{
//---------------------------------------------------------------------------------------------------------
// We want the filename to always use .xml as an extension. So - if the filename does not end in .xml -
// append .xml to the filename. Then, see if the file exists and carry on.
string _extension = Path.GetExtension(pSnap);
if (string.Compare(_extension, @".xml", true) != 0)
{
GenUtils.Exclaim("Snapshot file name must use .xml extension. Appending .xml to " + pSnap);
pSnap += ".xml";
}
if (!File.Exists(pSnap))
{
GenUtils.HangError("Cannot find file : " + pSnap);
GenUtils.Exclaim("Press Enter to exit...");
Console.ReadLine();
Environment.Exit(2);
}
GenUtils.Exclaim("Loading " + pSnap + "....");
List <HostVM> Loaded = new List <HostVM>();
XmlDocument _xReader = new XmlDocument();
_xReader.Load(pSnap);
//---------------------------------------------------------------------------------------------------------
//Read the XML file and reconstruct the list of VM's and all the EPRs on each VM (EPR Host) from the file.
//
foreach (XmlNode _vmHost in _xReader.SelectSingleNode(@"EPRSnapShot"))
{
HostVM _tmpVM = new HostVM(_vmHost.Attributes.GetNamedItem(@"HostName").FirstChild.Value.Trim(), HostVM.HostOperations.Connect, true);
foreach (XmlNode _eprInst in _vmHost.ChildNodes)
{
string _ip = _eprInst.Attributes.GetNamedItem(@"EPR").FirstChild.Value;
EPRInstance _epr = new EPRInstance(IPAddress.Parse(_ip));
_tmpVM.EPRs.Add(_epr);
if (_eprInst.Attributes.GetNamedItem(@"Profile") != null)
{
string _prots = _eprInst.Attributes.GetNamedItem(@"Protocols").FirstChild.Value;
_epr.Profile = _eprInst.Attributes.GetNamedItem(@"Profile").FirstChild.Value;
_epr.SetProtocols(_prots);
}
}
Loaded.Add(_tmpVM);
}
//---------------------------------------------------------------------------------------------------------
// To apply the snapshot, we have to follow this pattern:
// For every EPRHostVM that remains in the List of VMs (from the -VM option or the default hosts file)
// If there is not a match for it in the Snapshot file - remove it from the Hosts List
// For every EPRHostVM that remains in the list:
// Stop all EPR instances on the host
// Replicate, EPR Instance for EPR instance from the snapshot file to the host VM
GenUtils.Exclaim("Applying snapshot....");
bool _done;
int _hostNdx = 0;
//-------------------------------------------------------------------------------------------------------
// First - eliminate any Hosts that are in the main list and the not snapshot file...
do
{
_done = true;
for ( ; _hostNdx < pHosts.Count; _hostNdx++)
{
if (Loaded.Find(_hst => string.Compare(_hst.HostName, pHosts[_hostNdx].HostName, true) == 0) == null)
{
_done = false;
break;
}
}
if (_hostNdx < pHosts.Count)
{
GenUtils.Exclaim(pHosts[_hostNdx].HostName + " was not found in the Snapshot. Removing Host from main list.");
pHosts.RemoveAt(_hostNdx);
}
}while (!_done);
if (pHosts.Count == 0)
{
GenUtils.HangError("There are no EPR Host VMs left in the list of specified Hosts.");
return;
}
//-------------------------------------------------------------------------------------------------------
// Next, report on any hosts that were in the Snapshot file, but are NOT in the main Action List...
_hostNdx = 0;
do
{
_done = true;
for ( ; _hostNdx < Loaded.Count; _hostNdx++)
{
if (pHosts.Find(_hst => string.Compare(_hst.HostName, Loaded[_hostNdx].HostName, true) == 0) == null)
{
_done = false;
break;
}
}
if (_hostNdx < pHosts.Count)
{
GenUtils.Exclaim(Loaded[_hostNdx].HostName + " was not found in the main List of EPR Host VMs. Removing Host from snapshot list.");
Loaded.RemoveAt(_hostNdx);
}
}while (!_done);
//---------------------------------------------------------------------------------------------------------
// For the VMs that remain, they have been started because we could communciate with them and get their EPR
// info) -- but now we must destroy any existing EPR instances.
foreach (HostVM _host in pHosts)
{
_host.WorkQ.Add(HostVM.HostOperations.Stop);
_host.WorkStatus = HostVM.HostVMStatus.Pending;
}
Dispatch(pHosts, true);
//---------------------------------------------------------------------------------------------------------
// Finally, we need to clone the snapshot Host EPR instances in the new HostVMs.
foreach (HostVM _host in pHosts)
{
// Find the matching Host from the snapshot file...
HostVM _clone = Loaded.Find(_hst => string.Compare(_hst.HostName, _host.HostName, true) == 0);
if (_clone == null)
{
throw new Exception("Could not find Expected EPR Host VM to clone (" + _host.HostName + ") ?!");
}
_host.EPRs = _clone.EPRs;
_host.WorkQ.Add(HostVM.HostOperations.Clone);
_host.WorkStatus = HostVM.HostVMStatus.Pending;
}
Dispatch(pHosts, true);
}
/// <summary>
/// MainLine. Enter here.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
List <HostVM> Hosts = new List <HostVM>();
Options _opts = null;
try
{
_opts = new Options(args);
}
catch (Exception _ex)
{
GenUtils.HangError(_ex.Message);
Console.WriteLine();
Console.ForegroundColor = ConsoleColor.DarkCyan;
Console.WriteLine("Usage:\nManageEPRs");
Console.WriteLine(" -Start <Options> -- Start EPR instances. Options are explained below");
Console.WriteLine(" -VM \"list of vms to use\" -- Optional. EPR_FQDN,EPR_FQDN....");
Console.WriteLine(" Can also specify a specific VM and IP - EPR_FQDN/IPAddr");
Console.WriteLine(" -Profile \"<Profile Name>\" -- Required. Name of profile to start");
Console.WriteLine(" -Jedi | -Oz -- Required. Must know architecture to load balance EPRS.");
Console.WriteLine(" -Num #EPRsTostart -- Optional. -Jedi will start 255, -Oz will start 765");
Console.WriteLine(" -Protocols \"Comma Separated List of Protocols to support\"");
Console.WriteLine(" -Stop <Options> -- Stop EPR instances. Options are explained below");
Console.WriteLine(" -VM \"list of vms to use\" -- Optional. EPR_FQDN,EPR_FQDN....");
Console.WriteLine(" Can also specify a specific VM and IP - EPR_FQDN/IPAddr");
Console.WriteLine(" -Shutdown <Options> -- Stops all EPR instances and halts the EPR service.");
Console.WriteLine(" -VM \"list of vms to use\" -- Optional. EPR_FQDN,EPR_FQDN....");
Console.WriteLine(" NOTE: This functionality is not yet implemented...");
Console.WriteLine(" -Snapshot <Options> -- Create snapshot for recreating a configuration.");
Console.WriteLine(" -Name \"SnapshotFileName\" -- Required. Snapshot filename (for Replay)");
Console.WriteLine(" -VM \"list of vms to use\" -- Optional. EPR_FQDN,EPR_FQDN....");
Console.WriteLine(" -Load <Options> -- Load a snapshot to recreate it's environment.");
Console.WriteLine(" -Name \"SnapshotFileName\" -- Required. Snapshot filename (to load)");
Console.WriteLine(" -VM \"list of vms to use\" -- Optional. EPR_FQDN,EPR_FQDN....");
Console.WriteLine(" -List -- Will list all EPRs (used and unused) on all VMs specified");
Console.WriteLine(" -ListUsed -- Will list Used EPRs on all VMs specified");
Console.WriteLine(" -ListUnused -- Will list Unused EPRs on all VMs specified\n");
Console.WriteLine(" -Log \"LogFile\" - Change the name of the default log file to 'LogFile'.");
Console.WriteLine(" Default log file is named .\\ManageEPRs.Log.txt and is always created.");
Console.WriteLine(" -Threads # -- Sets the maximum number of threads to use to #. # <= 10.");
Console.WriteLine("NOTES:");
Console.WriteLine(" -List, -ListUsed or -ListUnused can be used with -Start, -Stop or -Shutdown");
Console.WriteLine(" If -VM is NOT specified, then ALL EPR Host VM's will be contacted");
Console.WriteLine(" and operated on. Be careful with -Stop and -Shutdown!!");
Console.WriteLine(" If a -Start request cannot be satisfied with the VMs specified,");
Console.WriteLine(" or with all VMs, then as many EPRS as can be started will be started.");
Console.WriteLine("\n\nPress Enter to exit.");
Console.ResetColor();
Console.ReadLine();
Environment.Exit(1);
}
//-------------------------------------------------------------------------------------------------------
// Create the initial ist of Host VM's to use. This will just create the initial objects - it does not
// attempt to communicate with the VM's yet. that will be done through the thread dispatcher bcause
// the communication process can be cumebrsome and time consuming so we wat to multi-thread it.
foreach (string _host in _opts.VMs)
{
Hosts.Add(new HostVM(_host, HostVM.HostOperations.Connect, _opts.ForceStart));
}
//---------------------------------------------------------------------------------------------------------
// Now, we are ready to start communicating with the VM's and build the info from each viable VM. If
// -Skip was included on the command line, then we will not force the EPRService to start on the VM if
// if it is not already running. VM's that cannot be communicated with will be removed from the Hosts
// list. Also, VM's that had invalid IP addresses specified will also be removed from the Hosts list.
// When the execution of this segment is complete, Hosts will contain all VM's to be used in this session.
GenUtils.Exclaim("Contacting EPR Host Vm's. This can take a few minutes....");
try
{
Dispatch(Hosts);
}
catch (Exception _ex)
{
GenUtils.HangError("Error during initial communication - " + _ex.Message);
Environment.Exit(5);
}
//---------------------------------------------------------------------------------------------------------
// Some of the operations will require further processing of the Hosts list. For example, if we are
// starting EPR's then we have to find the correct Hosts to use based on several things such as number,
// profiles and specified ip addresses. Once we are done with that, we can dispatch all of the operations
// together and let the thread dispatcher handle not over-taxing the system.
switch (_opts.Action)
{
case Options.ToolActions.Start:
FitEPRs(Hosts, _opts);
break;
case Options.ToolActions.Stop:
foreach (HostVM _hst in Hosts)
{
_hst.WorkQ.Add(HostVM.HostOperations.Stop);
_hst.WorkStatus = HostVM.HostVMStatus.Pending;
}
break;
case Options.ToolActions.Shutdown:
GenUtils.HangError("Sorry. This feature has not yet been implemented.");
break;
case Options.ToolActions.Load:
LoadSnapShot(Hosts, _opts.Snapshot);
break;
case Options.ToolActions.NoAction:
break;
}
if (_opts.Action != Options.ToolActions.NoAction)
{
if (Hosts.Count > 0)
{
Dispatch(Hosts);
}
else
{
GenUtils.HangError("There are no VM's that can fulfill the request?");
Environment.Exit(7);
}
}
//---------------------------------------------------------------------------------------------------------
// These are "non-action" commands because they do not make any changes to the VM's ot EPR instances.
if (_opts.TakeSnapshot)
{
CaptureSnapshot(Hosts, _opts.Snapshot);
}
if (_opts.ListAction != Options.ToolActions.NoAction)
{
Report(_opts.ListAction, Hosts);
}
}
/// <summary>
/// Finds open VM's/IP addresses for EPRS. Will follow these placement rules:
/// (1) Use targeted VM's whenever possible (for Jedi and Oz - #of network connections)
/// (2) Use small pools first to reduce fragmentation
/// (3) Start as many EPRs as possible - notify if # cannot be fully satisfied
/// </summary>
/// <param name="pHosts">List of VM's to use</param>
/// <param name="pOpts">Options form the command line</param>
/// <returns>true if EPRs started, false if there was a problem</returns>
static bool FitEPRs(List <HostVM> pHosts, Options pOpts)
{
List <int> _sorted = new List <int>();
int _hostNdx;
int _sortNdx;
bool _inserted;
string _targetVMIdentifier = pOpts.IsJedi ? "255" : "765";
string _foreignVMIdentifier = pOpts.IsJedi ? "765" : "255";
int _numEPRs = pOpts.StartNum > 0 ? pOpts.StartNum : pOpts.IsOz ? 765 : 255;
//---------------------------------------------------------------------------------------------------------
// First thing - remove all VM's from the list that either do not have any EPR instancs available, or
// do not support the profile that was requested.
_hostNdx = 0;
bool _good2Use = false;
do
{
for ( ; _hostNdx < pHosts.Count; _hostNdx++)
{
//-----------------------------------------------------------------------------------------------------
// Because we allow the use of a Partial string for the Profile name, we need to resolve what was
// specified on the command line to a real profile (if it exists). So - resolve the profile.
_good2Use = true;
string _tProf = pHosts[_hostNdx].FindProfile(pOpts.Profile);
if ((pHosts[_hostNdx].EPRInstancesAvailable == 0) || (string.IsNullOrEmpty(_tProf)))
{
_good2Use = false;
break;
}
if (!pOpts.AllowMix)
{
foreach (EPRInstance _locEpr in pHosts[_hostNdx].EPRs.Where(_inst => _inst.WasAlreadyExecuting))
{
// if ((_locEpr.WasAlreadyExecuting) && (string.Compare(_locEpr.Profile, _tProf, true) != 0))
if (string.Compare(_locEpr.Profile, _tProf, true) != 0)
{
_good2Use = false;
break;
}
}
}
if (!_good2Use)
{
break;
}
pHosts[_hostNdx].ProfileToStart = _tProf;
}
if (!_good2Use)
{
GenUtils.Exclaim("Removing VM " + pHosts[_hostNdx].HostName + " because it does not match requirements.");
pHosts.RemoveAt(_hostNdx);
}
}while (_hostNdx < pHosts.Count);
if (pHosts.Count == 0)
{
GenUtils.HangError("There are no VM's that match the requirements ?");
return(false);
}
//---------------------------------------------------------------------------------------------------------
// Sort the VM's that *could* be used according to the following rules:
// 1 - The VM's that are "tailored" for the specified architecture, should be first in the list
// 2 - The VM's with the fewest available EPR's should be before those with more available EPRS (to reduce
// fragmentation
for (_hostNdx = 0; _hostNdx < pHosts.Count; _hostNdx++)
{
_inserted = false;
for (_sortNdx = 0; _sortNdx < _sorted.Count; _sortNdx++)
{
//-----------------------------------------------------------------------------------------------------
// Check for the case where what is on the front of the sorted list is NOT the targeted VM - and what
// is being placed now is a targeted VM - then put the targeted VM in the first spot regardless of
// how many available EPRs it has.
if ((pHosts[_hostNdx].HostName.Contains(_targetVMIdentifier)) && (pHosts[_sorted[_sortNdx]].HostName.Contains(_foreignVMIdentifier)))
{
_inserted = true;
_sorted.Insert(_sortNdx, _hostNdx);
break;
//-----------------------------------------------------------------------------------------------------
// Ok - if the current Vm is the same tagretted platform as the one in the sorted list, then compare
// the numebr of available VM's - and sort them smallest to greatest.
}
else if (((pHosts[_hostNdx].HostName.Contains(_targetVMIdentifier)) && (pHosts[_sorted[_sortNdx]].HostName.Contains(_targetVMIdentifier))) ||
((pHosts[_hostNdx].HostName.Contains(_foreignVMIdentifier)) && (pHosts[_sorted[_sortNdx]].HostName.Contains(_foreignVMIdentifier))))
{
if (pHosts[_hostNdx].EPRInstancesAvailable <= pHosts[_sorted[_sortNdx]].EPRInstancesAvailable)
{
_inserted = true;
_sorted.Insert(_sortNdx, _hostNdx);
break;
}
}
}
//-------------------------------------------------------------------------------------------------------
// It may not be obvious, BUT if we reach here and have not yet inserted the current Host, then it has to
// go at the end of the _sorted list.
if (!_inserted)
{
_sorted.Add(_hostNdx);
}
}
// Now that we have the VM's sorted such that the VM's with the fewest available EPRs are first
// in the list, we can start to use those VM's to bring up the EPRs requested. This is a cross between a first fit
// and a best fit algorithm - and it should result in reducing "fragmentation" of EPR usage across Host VMs.
_hostNdx = 0;
int _cnt = _sorted.Count;
do
{
//-------------------------------------------------------------------------------------------------------
// The VM will not allow us to assign more EPR's to start than it has available - so, we can just assign
// how many we need and then subtract what VM reorts is the number we can start.
HostVM _vm = pHosts[_sorted[_hostNdx]];
_vm.EPRsToStart = _numEPRs;
_vm.ProtocolsToStart = pOpts.EPRProtocols;
_vm.WorkQ.Add(HostVM.HostOperations.Start);
_vm.WorkStatus = HostVM.HostVMStatus.Pending;
_numEPRs -= _vm.EPRsToStart;
++_hostNdx;
}while ((_numEPRs > 0) && (_hostNdx < _cnt));
if (_numEPRs > 0)
{
GenUtils.Exclaim("There are not enough available EPR instances. Only " + (pOpts.StartNum - _numEPRs).ToString() +
" will be started!\n\n");
}
return(true);
}
/// <summary>
/// Manages operations we want to perform on Host VM's. Each VM utilizes a separate
/// thread for the operation - but we want to be careful we do not get so many threads
/// active that we just slow to a crawl or crash because we are out of resources.
/// </summary>
/// <param name="pHosts">List of Host VM's to use for the operation</param>
/// <param name="pWait">Flag indicating to Wait until all threads complete. (Default = true)</param>
static void Dispatch(List <HostVM> pHosts, bool pWait = true)
{
int _threadsAvailable = NetDrive.Instance.MaxThreads;
bool _done;
bool _allStarted;
int _ndx;
int _removeNdx;
do
{
//-------------------------------------------------------------------------------------------------------
// We may have to traverse the inner loop multiple times - either if we run out of threads &/Or if we
// are supposed to wait here until all threads complete. Reset )removeNdx so that we know not to remove]
// any of the hosts.
_done = _allStarted = true;
_removeNdx = -1;
for (_ndx = 0; _ndx < pHosts.Count; _ndx++)
{
HostVM _vm = pHosts[_ndx];
//-----------------------------------------------------------------------------------------------------
// The Workstatus field will tell us what we want to know. Idle means there is nothing for the VM
// Object to do. Pending means that there is an operation waiting to be executed (the normal state).
// Working means that the thread is currently active. Done means that the thread has completed its
// task.
switch (_vm.WorkStatus)
{
//---------------------------------------------------------------------------------------------------
// If the work status is pending, then the WorkQ has one or more items on it that need to be started.
// In order to start an operation, we must be under the thread threshold. if we are at the threshold
// then we just skip it and try again next time through. Because we set _allStarted to false, the
// Loop will not exit.
case HostVM.HostVMStatus.Pending:
_allStarted = _done = false;
if (_threadsAvailable > 0)
{
--_threadsAvailable;
GenUtils.Exclaim("Starting thread for " + _vm.WorkQ[0].ToString() + " on " + _vm.HostName);
_vm.DoWork();
}
break;
//---------------------------------------------------------------------------------------------------
// If the VM has a thread running, then we are not _done (if that matters) - so just set _done to
// false.
case HostVM.HostVMStatus.Working:
_done = false;
break;
//---------------------------------------------------------------------------------------------------
// If this VM's thread has completed, then we can return that thread (logically) to the available
// pool and potentially use it to start other threads. We change the WorkStatus here ebcause this
// is where the threads are managed from.
case HostVM.HostVMStatus.Done:
_vm.WorkStatus = HostVM.HostVMStatus.Idle;
++_threadsAvailable;
GenUtils.Exclaim(_vm.HostName + " worker thread has finished");
break;
//---------------------------------------------------------------------------------------------------
// Idle is the state that means that the VM has nothing on its workQ.
case HostVM.HostVMStatus.Idle:
break;
//---------------------------------------------------------------------------------------------------
// NotConnected means that we can not use this VM. We were either unable to find it (perhaps it is
// powered down, or the Hostname was incorrect...) or we could not find/start the EPR Service. When
// this happens, we have to remove the VM from out Host List because we cannot use it.
case HostVM.HostVMStatus.NotConnected:
case HostVM.HostVMStatus.Error:
_removeNdx = _ndx;
_allStarted = false;
GenUtils.Exclaim(_vm.HostName + " is being removed from the use list.");
break;
}
if (_removeNdx >= 0)
{
// This is a bit of guerilla code -- we need to remove this VM from the list - but we can't remove
// it from within the for loop or the handler will die. So - we have to trap it here, then break
// out of the for loop and then trap it again so we can remove it. Sigh. Sometimes I REALLY miss c++
break;
}
}
//-----------------------------------------------------------------------------------------------------
// If there is still stuff to do, and we arrive here, then sleep for a second to allow some other
// work to happen. Might be better to sleep for 2 or 3 seconds?
if ((!_allStarted) || ((pWait) && (!_done)))
{
if (_removeNdx >= 0)
{
pHosts.RemoveAt(_removeNdx);
}
Thread.Sleep(1000);
}
}while ((!_allStarted) || ((pWait) && (!_done)));
if (pHosts.Count == 0)
{
throw new Exception("There are no VM's that can be used to satisfy the request");
}
}
/// <summary>
/// ThreadStart method. Executed in a worker thread to connect to the VM associated with this object,
/// possibly start the EPR service and/or to pull information regarding the EPR's and profiles
/// that this Host has.
/// NOTE: Uses synchronized object of a Netowrk Drive Letter.
/// </summary>
private void Connect()
{
string _tnd = null;
bool _connected = false;
IPAddress[] _localIPs;
//-------------------------------------------------------------------------------------------------------
//Verify that the hostname is good. if we can't find it via dns - then remove it from the list.
try
{
_localIPs = Dns.GetHostAddresses(HostName);
if (_localIPs.Length > 0)
{
var _isOn = new System.Net.NetworkInformation.Ping();
if (_isOn.Send(HostName).Status == System.Net.NetworkInformation.IPStatus.Success)
{
mainIPAddress = _localIPs[0];
}
else
{
WorkStatus = HostVMStatus.Error;
GenUtils.HangError("Cannot connect with " + HostName + ". Make sure it is powered up.");
return;
}
}
}
catch (Exception)
{
GenUtils.HangError(HostName + " is an unknown host?");
WorkStatus = HostVMStatus.Error;
return;
}
//-------------------------------------------------------------------------------------------------------
// In order to connect, we will first assume that the EPR Service is actually running on the Host VM
// and just attempt to establish communications. If they fail for a timeout, then we will know that
// we need to atempt to start the service on the remote host.
try
{
// eprHostChannel = new DeviceSimulatorChannel(HostName);
eprHostChannel = RemOpWithTimedRetries(() => (new DeviceSimulatorChannel(HostName)), TimeSpan.FromSeconds(3), 3);
InstalledProfiles = eprHostChannel.IntalledProfiles;
_connected = true;
}
catch (Exception _ex)
{
//-----------------------------------------------------------------------------------------------------
// Landing here *usually* means that the EPR service is not running on the remote system. So, we will
// attempt to start the service. In order to start the remote service, we will check to see if the
// remote dservice is running. If it is, then there is prossibly a firewall blocking us. If it is
// not, then we check to see if the executable exists. If it does not, then the EPR is not installed
// (or usable) on the remote system. If the executable does exist, then start it up.
if (((_ex.Message.Contains("timed out")) || _ex.Message.Contains("No endpoint", StringComparison.OrdinalIgnoreCase)) && (forceConn))
{
if (!GenUtils.CheckForRemoteProcess(HostName, Program.EPRSERVICE))
{
try
{
_tnd = GenUtils.MapNetworkDrive(Path.Combine(@"\\", HostName, "C$"), @"ETL\jawa", "!QAZ2wsx");
bool _canStart = File.Exists(Path.Combine(_tnd, Program.EPRSERVICEFILEPATH));
GenUtils.DisconnectNetworkDrive(_tnd, true);
_tnd = null;
if (_canStart)
{
GenUtils.Exclaim("EPR Service is not running on " + HostName + ". Attempting to start service...");
GenUtils.ExecuteRemoteProcess(HostName, Path.Combine(@"C:\", Program.EPRSERVICEFILEPATH), true, false);
eprHostChannel = new DeviceSimulatorChannel(HostName);
InstalledProfiles = eprHostChannel.IntalledProfiles;
_connected = true;
GenUtils.Exclaim("EPR Service started on " + HostName);
}
else
{
GenUtils.HangError("Does not appear that the EPR Service is installed on " + HostName);
WorkStatus = HostVMStatus.Error;
}
}
catch (Exception _inner)
{
if (!string.IsNullOrEmpty(_tnd))
{
GenUtils.DisconnectNetworkDrive(_tnd, true);
_tnd = null;
}
GenUtils.HangError("General network failure starting remote EPR service on " + HostName + " :: " + _inner.Message);
WorkStatus = HostVMStatus.Error;
}
}
else
{
GenUtils.HangError("Could not connect with remote service on " + HostName +
". Verify the VM IP, and that it is powered on, or check for possible firewall blocking communications.");
WorkStatus = HostVMStatus.Error;
}
}
else if (forceConn)
{
WorkStatus = HostVMStatus.Error;
GenUtils.HangError("General Network failure on " + HostName + " :: " + _ex.Message);
}
else
{
WorkStatus = HostVMStatus.NotConnected;
GenUtils.HangError("Could not connect with " + HostName + " (-Skip specified). Host will be removed from Main Action list");
}
}
//-----------------------------------------------------------------------------------------------------
// If the connection is made, then pull all of the relevent information about the EPRs from the Host
// VM.
if (_connected)
{
try
{
EPRs.Clear();
InstalledProfiles.Clear();
InstalledProfiles = eprHostChannel.IntalledProfiles;
foreach (IPAddress _ip in eprHostChannel.AvailableIPAddresses)
{
// if ((!_ip.ToString().EndsWith(".0")) && (HP.ScalableTest.Network.NetworkUtil.IsNonRoutableIpAddress(_ip)))
if ((!_ip.ToString().EndsWith(".0")) &&
(((_localIPs.Length == 1) && (HP.ScalableTest.Network.NetworkUtil.IsNonRoutableIpAddress(_ip))) ||
((_localIPs.Length > 1) && (!_ip.Equals(mainIPAddress)))))
{
//-----------------------------------------------------------------------------------------------
// If the user did not specify any IP address on the command line
// (format -vm Host/IP1/IP2/...,Host,Host/IP1/IP2...)
// then we default to ALL of the IP addresses returned both in use and those that are available.
// If the user DID supply some IP's - then everything on this Host must be limited to those IP's
// ONLY - so skip anything that is not on that list.
if (specifiedIPs.Count == 0)
{
EPRs.Add(new EPRInstance(_ip));
}
else
{
if (specifiedIPs.Contains(_ip.ToString()))
{
EPRs.Add(new EPRInstance(_ip));
}
}
}
}
EPRInstancesAvailable = eprHostChannel.AvailableIPAddresses.Count - 1;
foreach (DeviceInstance _di in eprHostChannel.Instances)
{
//-----------------------------------------------------------------------------------------------
// See the comment above...
if (specifiedIPs.Count == 0)
{
EPRs.Add(new EPRInstance(_di, true));
}
else
{
if (specifiedIPs.Contains(_di.Address.ToString()))
{
EPRs.Add(new EPRInstance(_di, true));
}
}
}
if (specifiedIPs.Count > 0)
{
//-------------------------------------------------------------------------------------------------
// If the user specified some IP's for this host on the command line, those are the ONLY IPs that
// can be operated on. So - check and see if they are valid. Hang messages if not and if none
// are valid - then return an error so this host is removed from the Action list. This also
// prevents us from having to check the IP validity anywhere else!
int _sNdx = 0;
do
{
for ( ; _sNdx < specifiedIPs.Count; _sNdx++)
{
string _ip = specifiedIPs[_sNdx];
if (EPRs.FindIndex(_inst => string.Compare(_ip, _inst.IPAddress.ToString()) == 0) < 0)
{
GenUtils.Exclaim(_ip + " is not a valid IP for host " + _ip + ". Removing from the IP List");
break;
}
}
if (_sNdx < specifiedIPs.Count)
{
specifiedIPs.RemoveAt(_sNdx);
}
}while (_sNdx < specifiedIPs.Count);
WorkStatus = specifiedIPs.Count > 0 ? HostVMStatus.Done : HostVMStatus.Error;
}
else
{
WorkStatus = HostVMStatus.Done;
}
}
catch (Exception _ex)
{
WorkStatus = HostVMStatus.Error;
GenUtils.HangError(HostName + " : Connection Exception caught: " + _ex.Message);
GenUtils.DisconnectNetworkDrive(_tnd, true);
}
}
}
