xenadmin/XenAdmin/Wizards/RollingUpgradeWizard/RollingUpgradeUpgradePage.cs

/* 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.Collections.Generic;
using System.Linq;
using XenAdmin.Core;
using XenAdmin.Wizards.PatchingWizard;
using XenAdmin.Wizards.PatchingWizard.PlanActions;
using XenAdmin.Wizards.RollingUpgradeWizard.PlanActions;
using XenAPI;

namespace XenAdmin.Wizards.RollingUpgradeWizard
{
    public partial class RollingUpgradeUpgradePage : AutomatedUpdatesBasePage
    {
        public RollingUpgradeUpgradePage()
        {
            InitializeComponent();
        }

        #region XenTabPage overrides
        public override string PageTitle { get { return Messages.UPGRADE_PLAN; } }

        public override string Text { get { return Messages.UPGRADE_PLAN; } }

        public override string HelpID { get { return "Upgradepools"; } }
        #endregion

        #region Accessors
        public bool ManualModeSelected { private get; set; }
        public Dictionary<string, string> InstallMethodConfig { private get; set; }
        #endregion

        #region AutomatedUpdatesBesePage overrides

        protected override string BlurbText()
        {
            return Messages.ROLLING_UPGRADE_UPGRADE_IN_PROGRESS;
        }

        protected override string SuccessMessageOnCompletion(bool multiplePools)
        {
            return multiplePools ? Messages.ROLLING_UPGRADE_SUCCESS_MANY : Messages.ROLLING_UPGRADE_SUCCESS_ONE;
        }

        protected override string FailureMessageOnCompletion(bool multiplePools)
        {
            return multiplePools ? Messages.ROLLING_UPGRADE_ERROR_MANY : Messages.ROLLING_UPGRADE_ERROR_ONE;
        }

        protected override string SuccessMessagePerPool()
        {
            return Messages.ROLLING_UPGRADE_SUCCESS_ONE;
        }

        protected override string FailureMessagePerPool(bool multipleErrors)
        {
            return multipleErrors ? Messages.ROLLING_UPGRADE_ERROR_POOL_MANY : Messages.ROLLING_UPGRADE_ERROR_POOL_ONE;
        }

        protected override void GeneratePlanActions(Pool pool, List<HostPlanActions> planActions, List<PlanAction> finalActions)
        {
            //Add masters first, then the slaves that are not ugpraded
            var hostNeedUpgrade = pool.HostsToUpgrade();
            
            foreach (var host in hostNeedUpgrade)
            {
                planActions.Add(GetSubTasksFor(host));
            }

            //add a revert pre-check action for this pool
            var problemsToRevert = ProblemsResolvedPreCheck.Where(p => hostNeedUpgrade.ToList().Select(h => h.uuid).ToList().Contains(p.Check.Host.uuid)).ToList();
            if (problemsToRevert.Count > 0)
                finalActions.Add(new UnwindProblemsAction(problemsToRevert, string.Format(Messages.REVERTING_RESOLVED_PRECHECKS_POOL, pool.Connection.Name)));
        }

        protected override bool SkipInitialPlanActions(Host host)
        {
            //Skip hosts already upgraded
            if (host.IsMaster())
            {
                var pool = Helpers.GetPoolOfOne(host.Connection);
                if (pool != null && pool.IsMasterUpgraded())
                {
                    log.Debug(string.Format("Skipping master '{0}' because it is upgraded", host.Name()));
                    return true;
                }
            }
            else
            {
                var master = Helpers.GetMaster(host.Connection);
                if (master != null && host.LongProductVersion() == master.LongProductVersion())
                {
                    log.Debug(string.Format("Skipping host '{0}' because it is upgraded", host.Name()));
                    return true;
                }
            }
            return false;
        }

        private Dictionary<UpdateProgressBackgroundWorker, List<XenServerPatch>> AllUploadedPatches = new Dictionary<UpdateProgressBackgroundWorker, List<XenServerPatch>>(); 
        private Dictionary<UpdateProgressBackgroundWorker, List<XenServerPatch>> MinimalPatches = new Dictionary<UpdateProgressBackgroundWorker, List<XenServerPatch>>(); // should be calculated only once per pool (to ensure update homogeneity)

        protected override void DoAfterInitialPlanActions(UpdateProgressBackgroundWorker bgw, Host host, List<Host> hosts)
        {
            var hostPlanActions = bgw.HostActions.FirstOrDefault(ha => ha.Host.Equals(host));
            if (hostPlanActions == null)
                return;

            if (hostPlanActions.UpdatesPlanActions.Count > 0) // this is a retry; do not recreate actions
                return; 

            if (!ApplyUpdatesToNewVersion || host.Connection.Cache.Hosts.Any(Host.RestrictBatchHotfixApply))
                return;
            
            if (!MinimalPatches.ContainsKey(bgw))
                MinimalPatches.Add(bgw, Updates.GetMinimalPatches(host.Connection));

            var minimalPatches = MinimalPatches[bgw];
            
            if (minimalPatches == null)
                return;

            if (!AllUploadedPatches.ContainsKey(bgw))
                AllUploadedPatches.Add(bgw, new List<XenServerPatch>());
            var uploadedPatches = AllUploadedPatches[bgw];

            var hostActions = GetUpdatePlanActionsForHost(host, hosts, minimalPatches, uploadedPatches, new KeyValuePair<XenServerPatch, string>());
            if (hostActions.UpdatesPlanActions != null && hostActions.UpdatesPlanActions.Count > 0)
            {
                hostPlanActions.UpdatesPlanActions = hostActions.UpdatesPlanActions;
                hostPlanActions.DelayedActions.InsertRange(0, hostActions.DelayedActions);
            }
        }
        #endregion

        #region Private methods
        private HostPlanActions GetSubTasksFor(Host host)
        {
            var hostPlanActions = new HostPlanActions(host);
            var runningVMs = host.GetRunningVMs();

            UpgradeHostPlanAction upgradeAction;
            if (ManualModeSelected)
                upgradeAction = new UpgradeManualHostPlanAction(host, this);
            else
                upgradeAction = new UpgradeAutomatedHostPlanAction(host, this, InstallMethodConfig);

            hostPlanActions.InitialPlanActions = new List<PlanAction>()
            {
                new EvacuateHostPlanAction(host),
                upgradeAction
            };

            hostPlanActions.DelayedActions = new List<PlanAction>()
            {
                new BringBabiesBackAction(runningVMs, host, true)
            };
            return hostPlanActions;
        }

        #endregion
    }
}