xenadmin/XenAdmin/Diagnostics/Checks/PVGuestsCheck.cs

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using System;
using System.Linq;
using System.Collections.Generic;
using XenAdmin.Core;
using XenAdmin.Diagnostics.Hotfixing;
using XenAdmin.Diagnostics.Problems;
using XenAdmin.Diagnostics.Problems.PoolProblem;
using XenAdmin.Diagnostics.Problems.HostProblem;
using XenAPI;


namespace XenAdmin.Diagnostics.Checks
{
    class PVGuestsCheck : HostPostLivenessCheck
    {
        private readonly Pool _pool;
        private readonly XenServerVersion _newVersion;
        private readonly bool _manualUpgrade;
        private readonly Dictionary<string, string> _installMethodConfig;
        private List<VM> _pvGuests = new List<VM>();

        public PVGuestsCheck(Host host, XenServerVersion newVersion)
            : base(host)
        {
            _newVersion = newVersion;
            _pool = Helpers.GetPoolOfOne(Host?.Connection);
        }

        public PVGuestsCheck(Host coordinator, bool manualUpgrade = false, Dictionary<string, string> installMethodConfig = null)
            : base(coordinator)
        {
            _pool = Helpers.GetPoolOfOne(Host?.Connection);
            _manualUpgrade = manualUpgrade;
            _installMethodConfig = installMethodConfig;
        }

        public override bool CanRun()
        {
            if (Helpers.YangtzeOrGreater(Host))
                return false;

            if (_pool == null)
                return false;

            _pvGuests = _pool.Connection.Cache.VMs.Where(vm => vm.IsPvVm()).ToList();
            if (_pvGuests.Count <= 0)
                return false;

            if (_newVersion != null && !Helpers.NaplesOrGreater(Host))
                return false;

            return true;
        }

        protected override Problem RunHostCheck()
        {
            //update case
            if (_newVersion != null)
            {
                if (_newVersion.Version.CompareTo(new Version(BrandManager.ProductVersion821)) >= 0)
                    return new PoolHasPVGuestProblem(this, _pool, _pvGuests);
                
                return new PoolHasPVGuestWarningUrl(this, _pool, _pvGuests);
            }

            //upgrade case

            if (!_manualUpgrade)
            {
                var hotfix = HotfixFactory.Hotfix(Host);
                if (hotfix != null && hotfix.ShouldBeAppliedTo(Host))
                    return new HostDoesNotHaveHotfixWarning(this, Host);
            }

            string upgradePlatformVersion = null;

            if (_installMethodConfig != null)
                Host.TryGetUpgradeVersion(Host, _installMethodConfig, out upgradePlatformVersion, out _);

            // we don't know the upgrade version, so add warning
            // (this is the case of the manual upgrade or when the rpu plugin doesn't have the function)
            if (string.IsNullOrEmpty(upgradePlatformVersion))
                return new PoolHasPVGuestWarningUrl(this, _pool, _pvGuests);

            if (Helpers.YangtzeOrGreater(upgradePlatformVersion))
                return new PoolHasPVGuestProblem(this, _pool, _pvGuests);

            if (Helpers.QuebecOrGreater(upgradePlatformVersion))
                return new PoolHasPVGuestWarningUrl(this, _pool, _pvGuests);

            return null;
        }

        public override string Description => Messages.PV_GUESTS_CHECK_DESCRIPTION;
    }
}