xenadmin/XenAdmin/Diagnostics/Checks/DiskSpaceForBatchUpdatesCheck.cs

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using XenAPI;
using XenAdmin.Diagnostics.Problems;
using XenAdmin.Core;
using System.IO;
using XenAdmin.Diagnostics.Problems.HostProblem;
using System.Collections.Generic;
using XenAdmin.Actions;
using System.Linq;


namespace XenAdmin.Diagnostics.Checks
{
    class DiskSpaceForAutomatedUpdatesCheck : Check
    {
        private readonly Dictionary<Host, List<XenServerPatch>> updateSequence;

        public DiskSpaceForAutomatedUpdatesCheck(Host host, Dictionary<Host, List<XenServerPatch>> updateSequence)
            : base(host)
        {
            this.updateSequence = updateSequence;
        }

        protected override Problem RunCheck()
        {
            if (!Host.IsLive())
                return new HostNotLiveWarning(this, Host);

            if (!Host.Connection.IsConnected)
                throw new EndOfStreamException(Helpers.GetName(Host.Connection));

            if (!Helpers.CreamOrGreater(Host.Connection))
                return null;

            var elyOrGreater = Helpers.ElyOrGreater(Host.Connection);

            // check the disk space on host
            var size = elyOrGreater
                ? updateSequence[Host].Sum(p => p.InstallationSize) // all updates on this host (for installation)
                : Host.IsMaster()
                    ? updateSequence[Host].Sum(p => p.InstallationSize) + updateSequence.Values.SelectMany(a => a).Max(p => p.InstallationSize) // master: all updates on master (for installation) + largest update in pool (for upload)
                    : updateSequence[Host].Sum(p => p.InstallationSize) + updateSequence[Host].Max(p => p.InstallationSize); // non-master: all updates on this host (for installation) + largest on this host (for upload)

            var action = new GetDiskSpaceRequirementsAction(Host, size, true, DiskSpaceRequirements.OperationTypes.automatedUpdates);

            try
            {
                action.RunExternal(action.Session);
            }
            catch
            {
                log.WarnFormat("Could not get disk space requirements");
            }

            if (action.Succeeded && action.DiskSpaceRequirements.AvailableDiskSpace < size)
                return new HostOutOfSpaceProblem(this, Host, action.DiskSpaceRequirements);

            return null;
        }

        public override string Description
        {
            get { return Messages.SERVER_SIDE_CHECK_AUTO_MODE_DESCRIPTION; }
        }

        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
    }
}