xenadmin/XenModel/Actions/WLB/WlbRetrieveRecommendationsAction.cs

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using System.Collections.Generic;
using XenAdmin.Core;
using XenAdmin.Wlb;
using XenAPI;


namespace XenAdmin.Actions.Wlb
{
    public class WlbRetrieveRecommendationsAction : AsyncAction
    {
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        public Dictionary<XenRef<VM>, string[]> Recommendations { get; private set; } = new Dictionary<XenRef<VM>, string[]>();

        public WlbRetrieveRecommendationsAction(Pool pool)
            : base(pool.Connection, string.Format(Messages.WLB_RETRIEVING_RECOMMENDATIONS, pool.Name()), true)
        {
            Pool = pool;

            #region RBAC Dependencies
            ApiMethodsToRoleCheck.Add("pool.retrieve_wlb_recommendations");
            #endregion
        }

        protected override void Run()
        {
            try
            {
                log.DebugFormat("Retrieving recommendations for pool {0}", Pool.Name());
                Recommendations = Pool.retrieve_wlb_recommendations(Session);
                log.DebugFormat("Success retrieving recommendations for pool {0}", Pool.Name());

                //Retrieving the recommendations was successful, so update the WlbServerState to report the current state
                //This is here in case there was a previous communication error which has been fixed.

                var state = WlbServerState.GetState(Pool);

                if (state == WlbServerState.ServerState.ConnectionError || state == WlbServerState.ServerState.Unknown)
                {
                    var newState = Helpers.WlbEnabled(Pool.Connection)
                        ? WlbServerState.ServerState.Enabled
                        : WlbServerState.ServerState.Disabled;
                    WlbServerState.SetState(Pool, newState);
                }
            }
            catch (Failure f)
            {
                WlbServerState.SetState(Pool, WlbServerState.ServerState.ConnectionError, f);
            }
        }
    }
}