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287 lines
12 KiB
C#
287 lines
12 KiB
C#
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/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using XenAPI;
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namespace XenAdmin.Wlb
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{
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/// <summary>
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/// Optimize pool recommendation properties
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/// </summary>
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// WLB: find optId, assume recommendation return string format is ["WLB"; host; optId; recID; reason]
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public enum RecProperties
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{
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/// <summary>
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/// WLB recommendation.
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/// </summary>
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WLB = 0,
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/// <summary>
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/// Recommendate moving to host.
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/// </summary>
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ToHost = 1,
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/// <summary>
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/// Optimize VM set ID
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/// </summary>
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OptId = 2,
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/// <summary>
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/// VM recommendation ID
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/// </summary>
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RecId = 3,
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/// <summary>
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/// Recommendate moving reason
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/// </summary>
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Reason = 4
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}
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/// <summary>
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/// Tag each ListView row in WLBOptimizePool with one of these, and pass them to row update.
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/// </summary>
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public class WlbOptimizationRecommendation
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{
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public readonly VM vm;
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public readonly string reason;
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public readonly Host fromHost;
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public readonly Host toHost;
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public readonly int recId;
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public readonly int optId;
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public readonly string powerOperation;
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public const string OPTIMIZINGPOOL = "wlb_optimizing_pool";
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/// <summary>
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/// Set optimizal vm properties
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/// </summary>
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/// <param name="vm">vm from optimize pool recommendations.</param>
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/// <param name="fromHost">host vm resides on.</param>
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/// <param name="toHost">host to move vm to.</param>
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/// <param name="reason">optimize reason.</param>
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internal WlbOptimizationRecommendation(VM vm, Host fromHost, Host toHost, string reason, int recId, int optId, string powerOperation)
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{
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this.vm = vm;
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this.fromHost = fromHost;
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this.toHost = toHost;
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this.reason = reason;
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this.recId = recId;
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this.optId = optId;
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this.powerOperation = powerOperation;
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}
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}
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public class WlbOptimizationRecommendationCollection : List<WlbOptimizationRecommendation>
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{
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public WlbOptimizationRecommendationCollection(Pool pool, Dictionary<XenRef<VM>, string[]> recommendations)
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{
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LoadSortedRecommendationList(pool, recommendations);
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}
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private void LoadSortedRecommendationList(Pool pool, Dictionary<XenRef<VM>, string[]> recommendations)
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{
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// When there are host powerOn recommendations, the toHost of the recommended move vms are disabled,
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// We use the powerOhHosts list to check if the toHost of the recommended move vms is a powerOnHost when it's disabled
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List<Host> powerOnHosts = GetAllPowerOnHosts(pool, recommendations);
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bool clearList = false;
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foreach (KeyValuePair<XenRef<VM>, string[]> rec in recommendations)
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{
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if (rec.Value[0].Trim().ToLower() == "wlb")
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{
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int recId = 0;
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int optId = 0;
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int.TryParse(rec.Value[(int)RecProperties.RecId], out recId);
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int.TryParse(rec.Value[(int)RecProperties.OptId], out optId);
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//XenObject<Host> toHost = (!vm.Server.is_control_domain || (vm.Server.is_control_domain && (String.Compare(rec.Value[(int)WlbOptimizePool.RecProperties.Reason].ToString(), "PowerOn", true) == 0))) ? pool.Connection.Cache.Find_by_Uuid<Host>(rec.Value[(int)WlbOptimizePool.RecProperties.ToHost]) : null;
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//XenObject<Host> fromHost = (!vm.Server.is_control_domain || (vm.Server.is_control_domain && (String.Compare(rec.Value[(int)WlbOptimizePool.RecProperties.Reason].ToString(), "PowerOff", true) == 0))) ? pool.Connection.Resolve(vm.Server.resident_on) : null;
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VM vm = pool.Connection.Resolve(rec.Key);
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Host toHost = (!vm.is_control_domain) ? pool.Connection.Cache.Find_By_Uuid<Host>(rec.Value[(int)RecProperties.ToHost]) : null;
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Host fromHost = (!vm.is_control_domain) ? pool.Connection.Resolve(vm.resident_on) : pool.Connection.Cache.Find_By_Uuid<Host>(rec.Value[(int)RecProperties.ToHost]);
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string powerOperation = Messages.ResourceManager.GetString(String.Format("WLB_OPT_OPERATION_HOST_{0}", rec.Value[(int)RecProperties.Reason].ToString().ToUpper()));
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string resourcedReasonOutput = Messages.ResourceManager.GetString(String.Format("WLB_OPT_REASON_{0}", rec.Value[(int)RecProperties.Reason].ToString().ToUpper()));
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if (resourcedReasonOutput == null)
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{
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resourcedReasonOutput = Messages.UNKNOWN;
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}
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/* Only vms or host have below criteria can be potentially added into recommendation collection
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* - if it is a control_domain (powerOn/powerOff host)
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* Or
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* - if the moving vm is running, toHost not equal to fromHost, and toHost is disable but it's a powerOnHost or toHost is enabled
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*/
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if ((vm.is_control_domain && fromHost!=null)
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|| (vm.power_state == XenAPI.vm_power_state.Running && toHost != fromHost && ((powerOnHosts.Count > 0 && !toHost.enabled && powerOnHosts.Contains(toHost)) || (toHost != null && toHost.enabled))))
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{
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// If it's a powerOn host, add it to the powerOnHosts list
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//if (vm.Server.is_control_domain && (powerOperation == Messages.WLB_OPT_OPERATION_HOST_POWERON)&& !fromHost.Server.IsLive)
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/*if(IsHostPowerOn(vm, powerOperation, fromHost))
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{
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powerOnHosts.Add(fromHost);
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}
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*/
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WlbOptimizationRecommendation optVmSetting = new WlbOptimizationRecommendation(vm, fromHost, toHost, resourcedReasonOutput, recId, optId, powerOperation);
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/* Clear the recommendation collection if the number of vms on a power off host
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* doesn't match the vms in the recommendations
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*/
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if (IsHostPowerOff(vm, powerOperation, fromHost)
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&& !VmsOnPowerOffHostAreInRecommendations(fromHost, recommendations))
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{
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clearList = true;
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break;
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}
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/* Add to the recommendation collection if:
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* - it's a vm (not power on/off host)
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* Or
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* - it's a power on/off host
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*/
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//if (!vm.Server.is_control_domain || (vm.Server.is_control_domain && (((powerOperation == Messages.WLB_OPT_OPERATION_HOST_POWERON) && !fromHost.Server.IsLive) || ((powerOperation == Messages.WLB_OPT_OPERATION_HOST_POWEROFF) && fromHost.Server.IsLive))))
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if (!vm.is_control_domain || IsHostPowerOnOff(vm, fromHost, powerOperation, recommendations))
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{
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this.Add(optVmSetting);
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}
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}
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}
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}
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if (clearList)
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{
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this.Clear();
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}
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else
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{
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this.Sort(SortByRecommendationId);
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}
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}
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private List<Host> GetAllPowerOnHosts(Pool pool, Dictionary<XenRef<VM>, string[]> recommendations)
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{
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List<Host> powerOnHosts = new List<Host>();
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foreach (KeyValuePair<XenRef<VM>, string[]> rec in recommendations)
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{
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if (rec.Value[0].Trim().ToLower() == "wlb")
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{
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VM vm = pool.Connection.Resolve(rec.Key);
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Host fromHost = (!vm.is_control_domain) ? pool.Connection.Resolve(vm.resident_on) : pool.Connection.Cache.Find_By_Uuid<Host>(rec.Value[(int)RecProperties.ToHost]);
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string powerOperation = Messages.ResourceManager.GetString(String.Format("WLB_OPT_OPERATION_HOST_{0}", rec.Value[(int)RecProperties.Reason].ToString().ToUpper()));
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if (vm.is_control_domain && fromHost!=null && IsHostPowerOn(vm, powerOperation, fromHost))
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{
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powerOnHosts.Add(fromHost);
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}
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}
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}
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return powerOnHosts;
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}
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private int SortByRecommendationId(WlbOptimizationRecommendation x, WlbOptimizationRecommendation y)
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{
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return x.recId.CompareTo(y.recId);
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}
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private bool IsHostPowerOnOff(VM vm, Host fromHost, string powerOperation, Dictionary<XenRef<VM>, string[]> recommendations)
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{
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if (vm.is_control_domain && fromHost!=null)
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{
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if(IsHostPowerOn(vm, powerOperation, fromHost))
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{
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return true;
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}
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if(IsHostPowerOff(vm, powerOperation, fromHost)
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&& VmsOnPowerOffHostAreInRecommendations(fromHost, recommendations))
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{
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return true;
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}
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}
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return false;
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}
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private bool IsHostPowerOn(VM vm, string powerOperation, Host fromHost)
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{
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if (vm != null && !String.IsNullOrEmpty(powerOperation) && fromHost != null)
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{
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return vm.is_control_domain && (powerOperation == Messages.WLB_OPT_OPERATION_HOST_POWERON) && !fromHost.IsLive;
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}
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return false;
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}
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private bool IsHostPowerOff(VM vm, string powerOperation, Host fromHost)
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{
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if (vm != null && !String.IsNullOrEmpty(powerOperation) && fromHost != null)
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{
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return vm.is_control_domain && (powerOperation == Messages.WLB_OPT_OPERATION_HOST_POWEROFF) && fromHost.IsLive;
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}
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return false;
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}
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private bool VmsOnPowerOffHostAreInRecommendations(Host fromHost, Dictionary<XenRef<VM>, string[]> recommendations)
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{
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foreach (XenRef<VM> vm in fromHost.resident_VMs)
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{
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if(!(recommendations.ContainsKey(vm)))
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{
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return false;
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}
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}
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return true;
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}
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}
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}
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