xenadmin/XenModel/Actions/VM/ImportVmAction.cs
Mihaela Stoica bd36a85bff CP-4816: Initial commit to git repo
Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
2013-06-24 12:41:48 +01:00

406 lines
15 KiB
C#

/* Copyright (c) Citrix Systems Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Net;
using XenAdmin.Core;
using XenAPI;
using System.Threading;
using XenAdmin.Network;
namespace XenAdmin.Actions
{
public class ImportVmAction : AsyncAction
{
private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
private const int HTTP_PUT_TIMEOUT = 30*60*1000; //30 minutes
private string m_filename;
private readonly Host m_affinity;
public const string IMPORT_TASK = "import_task";
private bool m_startAutomatically;
private List<Proxy_VIF> m_proxyVIFs;
private object monitor = new object();
private bool m_wizardDone;
/// <summary>
/// These calls are always required to import a VM, as opposed to the set which are only called if needed set in the constructor of this action.
/// </summary>
public readonly static RbacMethodList ConstantRBACRequirements = new RbacMethodList(
"vm.set_name_label",
"network.destroy",
"vif.create",
"vif.destroy",
"http/put_import"
);
public ImportVmAction(IXenConnection connection, Host affinity, string filename, SR sr)
: base(connection, string.Format(Messages.IMPORTVM_TITLE, filename, Helpers.GetName(connection)), Messages.IMPORTVM_PREP)
{
Pool = Helpers.GetPoolOfOne(connection);
m_affinity = affinity;
Host = affinity ?? connection.Resolve(Pool.master);
SR = sr;
VM = null;
m_filename = filename;
#region RBAC Dependencies
ApiMethodsToRoleCheck.AddRange(ConstantRBACRequirements);
if (affinity != null)
ApiMethodsToRoleCheck.Add("vm.set_affinity");
//??
//if (startAutomatically)
// ApiMethodsToRoleCheck.Add("vm.start");
ApiMethodsToRoleCheck.AddRange(Role.CommonTaskApiList);
ApiMethodsToRoleCheck.AddRange(Role.CommonSessionApiList);
#endregion
}
private string GetVmRef(string result)
{
if (string.IsNullOrEmpty(result))
return null;
string head = "<value><array><data><value>";
string tail = "</value></data></array></value>";
if (!result.StartsWith(head) || !result.EndsWith(tail))
return null;
int start = head.Length;
int length = result.IndexOf(tail) - start;
return result.Substring(start, length);
}
protected override void Run()
{
SafeToExit = false;
bool isTemplate;
try
{
string vmRef;
if (m_filename.EndsWith("ova.xml"))//importing version 1 from of VM
{
m_filename = m_filename.Replace("ova.xml", "");
vmRef = GetVmRef(applyVersionOneFiles());
}
else//importing current format of VM
vmRef = GetVmRef(applyFile());
if (Cancelling)
throw new CancelledException();
// Now lets try and set the affinity and start the VM
if (string.IsNullOrEmpty(vmRef))
return;
while (!Cancelling && (VM = Connection.Resolve(new XenRef<VM>(vmRef))) == null)
Thread.Sleep(100);
if (Cancelling)
throw new CancelledException();
isTemplate = VM.get_is_a_template(Session, vmRef);
Description = isTemplate ? Messages.IMPORT_TEMPLATE_UPDATING_TEMPLATE : Messages.IMPORTVM_UPDATING_VM;
VM.set_name_label(Session, vmRef, DefaultVMName(VM.get_name_label(Session, vmRef)));
if (!isTemplate && m_affinity != null)
VM.set_affinity(Session, vmRef, m_affinity.opaque_ref);
// Wait here for the wizard to finish
Description = isTemplate ? Messages.IMPORT_TEMPLATE_WAITING_FOR_WIZARD : Messages.IMPORTVM_WAITING_FOR_WIZARD;
lock (monitor)
{
while (!(m_wizardDone || Cancelling))
Monitor.Wait(monitor);
}
if (Cancelling)
throw new CancelledException();
if (m_proxyVIFs != null)
{
Description = isTemplate ? Messages.IMPORT_TEMPLATE_UPDATING_NETWORKS : Messages.IMPORTVM_UPDATING_NETWORKS;
// We need to destroy all vifs and recreate them.
List<XenRef<VIF>> vifs = VM.get_VIFs(Session, vmRef);
List<XenAPI.Network> networks = new List<XenAPI.Network>();
foreach (XenRef<VIF> vif in vifs)
{
// Save the network as we may have to delete it later
XenAPI.Network network = Connection.Resolve(VIF.get_network(Session, vif));
if (network != null)
networks.Add(network);
VIF.destroy(Session, vif);
}
foreach (Proxy_VIF proxyVIF in m_proxyVIFs)
{
VIF vif = new VIF(proxyVIF) {VM = new XenRef<VM>(vmRef)};
VIF.create(Session, vif);
}
// now delete any Networks associated with this task if they have no VIFs
foreach (XenAPI.Network network in networks)
{
if (!network.other_config.ContainsKey(IMPORT_TASK))
continue;
if (network.other_config[IMPORT_TASK] != RelatedTask.opaque_ref)
continue;
try
{
if (XenAPI.Network.get_VIFs(Session, network.opaque_ref).Count > 0)
continue;
if (XenAPI.Network.get_PIFs(Session, network.opaque_ref).Count > 0)
continue;
XenAPI.Network.destroy(Session, network.opaque_ref);
}
catch (Exception e)
{
log.ErrorFormat("Exception while deleting network {0}. Squashing.", network.Name);
log.Error(e, e);
}
}
}
if (!VM.get_is_a_template(Session, vmRef))
{
if (m_startAutomatically)
{
Description = Messages.IMPORTVM_STARTING;
VM.start(Session, vmRef, false, false);
}
}
}
catch (CancelledException)
{
Description = Messages.CANCELLED_BY_USER;
throw;
}
Description = isTemplate ? Messages.IMPORT_TEMPLATE_IMPORTCOMPLETE : Messages.IMPORTVM_IMPORTCOMPLETE;
}
private int VMsWithName(string name)
{
int i = 0;
foreach (VM v in Connection.Cache.VMs)
if (v.name_label == name)
i++;
return i;
}
private string DefaultVMName(string vmName)
{
string name = vmName;
int i = 0;
if (VMsWithName(vmName) > 1)
while (VMsWithName(name) > 0)
{
i++;
name = string.Format(Messages.NEWVM_DEFAULTNAME, vmName, i);
}
return name;
}
private List<string> TaskErrorInfo()
{
return new List<string>(Task.get_error_info(Session, RelatedTask));
}
private long getSize(DirectoryInfo dir, long count)
{
long s = count;
foreach (FileInfo f in dir.GetFiles("*.gz"))
s += f.Length;
foreach (DirectoryInfo d in dir.GetDirectories())
s += getSize(d, s);
return s;
}
private string applyVersionOneFiles()
{
RelatedTask = Task.create(Session, "importTask", Messages.IMPORTING);
try
{
long totalSize = getSize(new DirectoryInfo(m_filename), 0);
long bytesWritten = 0;
if (totalSize == 0)
{
// We didn't find any .gz files, just bail out here
throw new Exception(Messages.IMPORT_INCOMPLETE_FILES);
}
CommandLib.Config config = new CommandLib.Config
{
hostname = Connection.Hostname,
username = Connection.Username,
password = Connection.Password
};
CommandLib.thinCLIProtocol tCLIprotocol = null;
int exitCode = 0;
tCLIprotocol = new CommandLib.thinCLIProtocol(delegate(string s) { throw new Exception(s); },
delegate { throw new Exception(Messages.EXPORTVM_NOT_HAPPEN); },
delegate(string s, CommandLib.thinCLIProtocol t) { log.Debug(s); },
delegate(string s) { log.Debug(s); },
delegate(string s) { log.Debug(s); },
delegate { throw new Exception(Messages.EXPORTVM_NOT_HAPPEN); },
delegate(int i)
{
exitCode = i;
tCLIprotocol.dropOut = true;
},
delegate(int i)
{
bytesWritten += i;
PercentComplete = (int)(100.0*bytesWritten/totalSize);
},
config);
string body = string.Format("vm-import\nsr-uuid={0}\nfilename={1}\ntask_id={2}\n",
SR.uuid, m_filename, RelatedTask.opaque_ref);
log.DebugFormat("Importing Geneva-style XVA from {0} to SR {1} using {2}", m_filename, SR.Name, body);
CommandLib.Messages.performCommand(body, tCLIprotocol);
// Check the task status -- Geneva-style XVAs don't raise an error, so we need to check manually.
List<string> excep = TaskErrorInfo();
if (excep.Count > 0)
throw new Failure(excep);
// CA-33665: We found a situation before were the task handling had been messed up, we should check the exit code as a failsafe
if (exitCode != 0)
throw new Failure(new[] {Messages.IMPORT_GENERIC_FAIL});
return Task.get_result(Session, RelatedTask);
}
catch (Exception exn)
{
List<string> excep = TaskErrorInfo();
if (excep.Count > 0)
throw new Failure(excep);
else
throw exn;
}
finally
{
Task.destroy(Session, RelatedTask);
}
}
private string applyFile()
{
log.DebugFormat("Importing Rio-style XVA from {0} to SR {1}", m_filename, SR.Name);
Host host = SR.GetStorageHost();
string hostURL;
if (host == null)
{
Uri uri = new Uri(Session.Url);
hostURL = uri.Host;
}
else
{
log.DebugFormat("SR is not shared -- redirecting to {0}", host.address);
hostURL = host.address;
}
log.DebugFormat("Using {0} for import", hostURL);
return HTTPHelper.Put(this, HTTP_PUT_TIMEOUT, m_filename, hostURL,
(HTTP_actions.put_ssbbs)HTTP_actions.put_import,
Session.uuid, false, false, SR.opaque_ref);
}
public override void RecomputeCanCancel()
{
CanCancel = m_wizardDone;
}
protected override void CancelRelatedTask()
{
log.InfoFormat("VM/Template import from '{0}' cancelled", m_filename);
lock (monitor)
{
Monitor.PulseAll(monitor);
}
base.CancelRelatedTask();
}
public void EndWizard(bool start, List<Proxy_VIF> vifs)
{
m_startAutomatically = start;
m_proxyVIFs = vifs;
lock (monitor)
{
m_wizardDone = true;
Monitor.PulseAll(monitor);
}
}
}
}