xenadmin/XenModel/Actions/VIF/DeleteVIFAction.cs

/* Copyright (c) Citrix Systems, Inc. 
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using XenAdmin.Actions;
using XenAPI;


namespace XenAdmin.Actions
{
    public class DeleteVIFAction : PureAsyncAction
    {
        private XenAPI.VIF _vif;
        public DeleteVIFAction(XenAPI.VIF vif):base(vif.Connection,String.Format(Messages.ACTION_VIF_DELETING_TITLE, vif.NetworkName(), vif.Connection.Resolve(vif.VM).Name()))
        {
            _vif=vif;
            VM = vif.Connection.Resolve(vif.VM);
        }

        /// <summary>
        /// List of XML RPC calls made by the class although not need explicity by 
        /// this class as it's pure async
        /// </summary>
        public static readonly List<string> XmlRpcMethods = new List<string>()
        {
            "VIF.unplug",
            "VIF.destroy"                                   
        };

        protected override void Run()
        {
            Description = Messages.ACTION_VIF_DELETING;
            DeleteVIF();
            Description = Messages.ACTION_VIF_DELETED;
        }

        private void DeleteVIF()
        {
            if (VM.power_state == XenAPI.vm_power_state.Running
                && XenAPI.VIF.get_allowed_operations(Session, _vif.opaque_ref).Contains(XenAPI.vif_operations.unplug))
            {
                try
                {
                    XenAPI.VIF.unplug(Session, _vif.opaque_ref);
                }
                catch (XenAPI.Failure exn)
                {
                    // Ignore the failure if it's already detached -- throw everything else.
                    if (exn.ErrorDescription[0] != XenAPI.Failure.DEVICE_ALREADY_DETACHED)
                    {
                        throw;
                    }
                }
            }
            XenAPI.VIF.destroy(Session, _vif.opaque_ref);
        }
    }
}