xenadmin/XenModel/Actions/VM/VMSnapshotDeleteAction.cs

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using System.Collections.Generic;
using System.Linq;
using XenAdmin.Actions.VMActions;
using XenAPI;


namespace XenAdmin.Actions
{
    public class VMSnapshotDeleteAction : VMDestroyAction
    {
        public VMSnapshotDeleteAction(VM snapshot)
            : base(snapshot, GetDisksToDelete(snapshot), new List<VM>())
        {
            // the value of VM should be the snapshot and not the parent VM;
            // first, because it makes sense to set VM to the actual object
            // handled by the action; second and more important, because Run()
            // calls base.Run() which would result to deleting the parent VM;
            // note that the VM setter has already code that set AppliesTo to
            // the parent VM for snapshots
            VM = snapshot;

            Title = string.Format(Messages.ACTION_VM_DELETE_SNAPSHOT_TITLE, VM.Name());
            Description = string.Format(Messages.ACTION_VM_DELETE_SNAPSHOT_TITLE, VM.Name());

            if (VM.power_state == vm_power_state.Suspended)
                ApiMethodsToRoleCheck.Add("VM.hard_shutdown");
        }

        private static List<VBD> GetDisksToDelete(VM snapshot)
        {
            return snapshot.Connection.ResolveAll(snapshot.VBDs).FindAll(x => x.GetIsOwner()).ToList();
        }

        protected override void Run()
        {
            if (VM.power_state == vm_power_state.Suspended)
                VM.hard_shutdown(Session, VM.opaque_ref);

            base.Run();
            Description = string.Format(Messages.SNAPSHOT_DELETED, VM.Name());
        }
    }
}