mirror of
https://github.com/xcp-ng/xenadmin.git
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325 lines
13 KiB
C#
325 lines
13 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
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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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using XenAdmin.Core;
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using System.Text.RegularExpressions;
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using System.Xml;
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using System.Globalization;
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namespace XenAdmin.Alerts
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{
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public class PerfmonDefinition
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{
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private const string xmlns = ""; // no namespace for perfmon
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public const string PERFMON_KEY_NAME = "perfmon";
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private const string ROOT_ELEMENT_NAME = "config";
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private const string VARIABLE_ELEMENT_NAME = "variable";
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private const string ALARM_TRIGGER_LEVEL_ELEMENT_NAME = "alarm_trigger_level";
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private const string ALARM_TRIGGER_PERIOD_ELEMENT_NAME = "alarm_trigger_period";
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private const string ALARM_AUTO_INHIBIT_PERIOD_ELEMENT_NAME = "alarm_auto_inhibit_period";
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private const string ALARM_TYPE_ELEMENT_NAME = "name";
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private const string ALARM_COMMON_ATTR_NAME = "value";
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public const string ALARM_TYPE_CPU = "cpu_usage";
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public const string ALARM_TYPE_NETWORK = "network_usage";
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public const string ALARM_TYPE_DISK = "disk_usage";
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public const string ALARM_TYPE_FILESYSTEM = "fs_usage";
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public const string ALARM_TYPE_MEMORY_FREE = "memory_free_kib";
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public const string ALARM_TYPE_MEMORY_DOM0_USAGE = "mem_usage";
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public const string ALARM_TYPE_LOG_FILESYSTEM = "log_fs_usage";
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public const string ALARM_TYPE_SR_PHYSICAL_UTILISATION = "physical_utilisation";
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/// <summary>
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/// This is the name that will be stored in the SR's other-config:perfmon key
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/// </summary>
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public const string ALARM_TYPE_SR = "sr_io_throughput_total_per_host";
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/// <summary>
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/// This matches the name of the host alert
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/// </summary>
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public static readonly Regex SrRegex = new Regex("^sr_io_throughput_total_([a-f0-9]{8})$");
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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private readonly string name;
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private readonly decimal alarmTriggerLevel;
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private readonly decimal alarmTriggerPeriod;
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private readonly decimal alarmAutoInhibitPeriod;
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public bool HasValueSet { private set; get; }
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public PerfmonDefinition(string name, decimal alarmTriggerLevel, decimal alarmTriggerPeriod, decimal alarmAutoInhibitPeriod)
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{
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this.name = name;
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this.alarmTriggerLevel = alarmTriggerLevel;
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this.alarmTriggerPeriod = alarmTriggerPeriod;
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this.alarmAutoInhibitPeriod = alarmAutoInhibitPeriod;
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HasValueSet = true;
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}
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public bool IsCPUUsage
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{
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get { return name.Equals(ALARM_TYPE_CPU); }
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}
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public bool IsNetworkUsage
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{
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get { return name.Equals(ALARM_TYPE_NETWORK); }
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}
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public bool IsDiskUsage
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{
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get { return name.Equals(ALARM_TYPE_DISK); }
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}
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public bool IsMemoryUsage
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{
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get { return name.Equals(ALARM_TYPE_MEMORY_FREE); }
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}
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public bool IsDom0MemoryUsage
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{
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get { return name.Equals(ALARM_TYPE_MEMORY_DOM0_USAGE); }
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}
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public bool IsSrUsage
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{
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get { return name.Equals(ALARM_TYPE_SR); }
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}
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public bool IsSrPhysicalUtilisation
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{
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get { return name.Equals(ALARM_TYPE_SR_PHYSICAL_UTILISATION); }
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}
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public decimal AlarmTriggerLevel
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{
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get { return alarmTriggerLevel; }
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}
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public decimal AlarmTriggerPeriod
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{
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get { return alarmTriggerPeriod; }
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}
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public decimal AlarmAutoInhibitPeriod
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{
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get { return alarmAutoInhibitPeriod; }
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}
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public override string ToString()
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{
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return String.Format("{0} (Value: {1} Trigger Period: {2} Auto Inhibit Period: {3})",
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name, alarmTriggerLevel, alarmTriggerPeriod, alarmAutoInhibitPeriod);
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}
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public override bool Equals(object obj)
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{
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PerfmonDefinition other = obj as PerfmonDefinition;
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if (other == null)
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return false;
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return other.name == name &&
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other.alarmTriggerLevel == alarmTriggerLevel &&
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other.alarmTriggerPeriod == alarmTriggerPeriod
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&& other.alarmAutoInhibitPeriod == alarmAutoInhibitPeriod;
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}
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public override int GetHashCode()
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{
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return name.GetHashCode();
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}
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private PerfmonDefinition(XmlNode parentNode)
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{
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foreach (XmlNode node in parentNode.ChildNodes)
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{
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bool success = false;
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if (node.Attributes == null)
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{
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//ignore
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}
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else if (node.Name.Equals(ALARM_TYPE_ELEMENT_NAME))
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{
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name = node.Attributes[ALARM_COMMON_ATTR_NAME].Value;
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success = true;
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}
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else if (node.Name.Equals(ALARM_TRIGGER_LEVEL_ELEMENT_NAME))
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{
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success = Decimal.TryParse(
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node.Attributes[ALARM_COMMON_ATTR_NAME].Value,
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NumberStyles.Any,
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CultureInfo.InvariantCulture,
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out alarmTriggerLevel);
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HasValueSet = HasValueSet || success;
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}
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else if (node.Name.Equals(ALARM_TRIGGER_PERIOD_ELEMENT_NAME))
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{
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success = Decimal.TryParse(
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node.Attributes[ALARM_COMMON_ATTR_NAME].Value,
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NumberStyles.Any,
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CultureInfo.InvariantCulture,
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out alarmTriggerPeriod);
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HasValueSet = HasValueSet || success;
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}
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else if (node.Name.Equals(ALARM_AUTO_INHIBIT_PERIOD_ELEMENT_NAME))
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{
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success = Decimal.TryParse(
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node.Attributes[ALARM_COMMON_ATTR_NAME].Value,
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NumberStyles.Any,
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CultureInfo.InvariantCulture,
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out alarmAutoInhibitPeriod);
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HasValueSet = HasValueSet || success;
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}
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if (!success)
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log.DebugFormat("Failed to unmarshal perfmon definition '{0}'", node.OuterXml);
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}
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}
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/// <summary>
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/// Creates a "variable" element using the PerfmonDefinition.
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/// </summary>
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private XmlNode ToXmlNode(XmlDocument doc)
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{
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XmlNode node = doc.CreateNode(XmlNodeType.Element, VARIABLE_ELEMENT_NAME, xmlns);
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XmlNode nameNode = doc.CreateNode(XmlNodeType.Element, ALARM_TYPE_ELEMENT_NAME, xmlns);
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XmlAttribute nameAttr = doc.CreateAttribute(ALARM_COMMON_ATTR_NAME);
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nameAttr.Value = name;
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nameNode.Attributes.Append(nameAttr);
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node.AppendChild(nameNode);
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XmlNode alarmTriggerLevelNode = doc.CreateNode(XmlNodeType.Element, ALARM_TRIGGER_LEVEL_ELEMENT_NAME, xmlns);
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XmlAttribute alarmTriggerLevelAttr = doc.CreateAttribute(ALARM_COMMON_ATTR_NAME);
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alarmTriggerLevelAttr.Value = alarmTriggerLevel.ToString(CultureInfo.InvariantCulture);
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alarmTriggerLevelNode.Attributes.Append(alarmTriggerLevelAttr);
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node.AppendChild(alarmTriggerLevelNode);
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XmlNode alarmTriggerPeriodNode = doc.CreateNode(XmlNodeType.Element, ALARM_TRIGGER_PERIOD_ELEMENT_NAME, xmlns);
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XmlAttribute alarmTriggerPeriodAttr = doc.CreateAttribute(ALARM_COMMON_ATTR_NAME);
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alarmTriggerPeriodAttr.Value = alarmTriggerPeriod.ToString(CultureInfo.InvariantCulture);
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alarmTriggerPeriodNode.Attributes.Append(alarmTriggerPeriodAttr);
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node.AppendChild(alarmTriggerPeriodNode);
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XmlNode alarmAutoInhibitPeriodNode = doc.CreateNode(XmlNodeType.Element, ALARM_AUTO_INHIBIT_PERIOD_ELEMENT_NAME, xmlns);
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XmlAttribute alarmAutoInhibitPeriodAttr = doc.CreateAttribute(ALARM_COMMON_ATTR_NAME);
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alarmAutoInhibitPeriodAttr.Value = alarmAutoInhibitPeriod.ToString(CultureInfo.InvariantCulture);
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alarmAutoInhibitPeriodNode.Attributes.Append(alarmAutoInhibitPeriodAttr);
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node.AppendChild(alarmAutoInhibitPeriodNode);
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return node;
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}
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/// <summary>
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/// Parse the entire perfmon xml config blob and build a collection of
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/// perfmon definitions. Note the rootnode is a "config" element and the
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/// child elements are "variable".
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/// </summary>
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private static PerfmonDefinition[] GetPerfmonDefinitions(string xml)
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{
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try
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{
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XmlDocument doc = new XmlDocument();
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doc.LoadXml(xml);
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XmlNode parentNode = doc.FirstChild;
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List<PerfmonDefinition> perfmonDefinitions = new List<PerfmonDefinition>();
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foreach (XmlNode node in parentNode.ChildNodes)
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{
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try
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{
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var def = new PerfmonDefinition(node);
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if (def.HasValueSet)
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perfmonDefinitions.Add(def);
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}
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catch (Exception e)
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{
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log.Debug($"Exception unmarshalling perfmon definition '{node.OuterXml}'", e);
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}
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}
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return perfmonDefinitions.ToArray();
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}
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catch (Exception e)
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{
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log.Debug(e, e);
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return new PerfmonDefinition[0];
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}
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}
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public static PerfmonDefinition[] GetPerfmonDefinitions(IXenObject xo)
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{
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if (!(xo is VM) && !(xo is Host) && !(xo is SR))
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return Array.Empty<PerfmonDefinition>();
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var other_config = Helpers.GetOtherConfig(xo);
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if (other_config == null)
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return Array.Empty<PerfmonDefinition>();
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if (!other_config.ContainsKey(PERFMON_KEY_NAME))
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return Array.Empty<PerfmonDefinition>();
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var perfmonConfigXML = other_config[PERFMON_KEY_NAME];
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if (perfmonConfigXML == null)
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return Array.Empty<PerfmonDefinition>();
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return string.IsNullOrWhiteSpace(perfmonConfigXML) ? Array.Empty<PerfmonDefinition>() : GetPerfmonDefinitions(perfmonConfigXML);
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}
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/// <summary>
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/// Build an entire "perfmon" xml config blob using the collection of
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/// perfmon definitions. Note the rootnode is a "config" element and the
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/// child elements are "variable". This will be used to set the other_config
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/// of the host or vm objects.
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/// </summary>
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public static string GetPerfmonDefinitionXML(List<PerfmonDefinition> perfmonDefinitions)
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{
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XmlDocument doc = new XmlDocument();
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XmlNode parentNode = doc.CreateNode(XmlNodeType.Element, ROOT_ELEMENT_NAME, xmlns);
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doc.AppendChild(parentNode);
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foreach (PerfmonDefinition perfmonDefinition in perfmonDefinitions)
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parentNode.AppendChild(perfmonDefinition.ToXmlNode(doc));
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return doc.OuterXml;
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}
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}
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}
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