xenadmin/XenModel/XenAPI/Helper.cs
2014-04-23 17:48:17 +01:00

376 lines
14 KiB
C#

/*
* 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:
*
* 1) Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2) 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;
using System.Collections.Generic;
namespace XenAPI
{
public enum API_Version
{
API_1_1 = 1, // XenServer 4.0 (codename Rio)
API_1_2 = 2, // XenServer 4.1 (Miami)
API_1_3 = 3, // XenServer 5.0 up to update 2 (Orlando)
API_1_4 = 4, // Unreleased
API_1_5 = 5, // XenServer 5.0 update 3 and above (Floodgate)
API_1_6 = 6, // XenServer 5.5 (George)
API_1_7 = 7, // XenServer 5.6 (Midnight Ride)
API_1_8 = 8, // XenServer 5.6.1 (Cowley)
API_1_9 = 9, // XenServer 6.0 (Boston)
API_1_10 = 10, // XenServer 6.1 (Tampa)
API_2_0 = 11, // XenServer 6.2 (Clearwater)
API_2_1 = 12, // XenServer 6.2 with vGPU (vGPU)
API_2_2 = 13, // vdi.copy change in XS62ESP1004 (Hotfix Fox)
API_2_3 = 14, // XenServer xs64bit
LATEST = 14,
// Don't forget to change LATEST above, and APIVersionString() below.
UNKNOWN = 99
}
public static class Helper
{
public const string NullOpaqueRef = "OpaqueRef:NULL";
public static string APIVersionString(API_Version v)
{
switch (v)
{
case API_Version.API_1_1:
return "1.1";
case API_Version.API_1_2:
return "1.2";
case API_Version.API_1_3:
return "1.3";
case API_Version.API_1_4:
return "1.4";
case API_Version.API_1_5:
return "1.5";
case API_Version.API_1_6:
return "1.6";
case API_Version.API_1_7:
return "1.7";
case API_Version.API_1_8:
return "1.8";
case API_Version.API_1_9:
return "1.9";
case API_Version.API_1_10:
return "1.10";
case API_Version.API_2_0:
return "2.0";
case API_Version.API_2_1:
return "2.1";
case API_Version.API_2_2:
return "2.2";
case API_Version.API_2_3:
return "2.3";
default:
return "Unknown";
}
}
public static API_Version GetAPIVersion(long major, long minor)
{
try
{
return (API_Version)Enum.Parse(typeof(API_Version),
string.Format("API_{0}_{1}", major, minor));
}
catch (ArgumentException)
{
return API_Version.UNKNOWN;
}
}
/// <summary>
/// Converts the string representation of an API version number to its API_Version equivalent.
/// This function assumes that API version numbers are of form a.b
/// </summary>
public static API_Version GetAPIVersion(string version)
{
if (version != null)
{
string[] tokens = version.Split('.');
int major, minor;
if (tokens.Length == 2 && int.TryParse(tokens[0], out major) && int.TryParse(tokens[1], out minor))
{
return GetAPIVersion(major, minor);
}
}
return API_Version.UNKNOWN;
}
/// <summary>
/// Return a positive number if the given session's API version is greater than the given
/// API_version, negative if it is less, and 0 if they are equal.
/// </summary>
internal static int APIVersionCompare(Session session, API_Version v)
{
return (int)session.APIVersion - (int)v;
}
/// <summary>
/// Return true if the given session's API version is greater than or equal to the given
/// API_version.
/// </summary>
internal static bool APIVersionMeets(Session session, API_Version v)
{
return APIVersionCompare(session, v) >= 0;
}
/// <summary>
/// Test to see if two objects are equal. If the objects implement ICollection, then we will
/// call AreCollectionsEqual to compare elements within the collection.
/// </summary>
public static bool AreEqual(object o1, object o2)
{
if (o1 == null && o2 == null)
return true;
if (o1 == null || o2 == null)
return false;
if (o1 is IDictionary)
return AreDictEqual((IDictionary)o1, (IDictionary)o2);
if (o1 is System.Collections.ICollection)
return AreCollectionsEqual((ICollection)o1, (ICollection)o2);
return o1.Equals(o2);
}
/// <summary>
/// Test to see if two objects are equal. Different from AreEqual in that this function
/// considers an empty Collection and null to be equal.
/// </summary>
public static bool AreEqual2<T>(T o1, T o2)
{
if (o1 == null && o2 == null)
return true;
if (o1 == null || o2 == null)
return o1 == null && IsEmptyCollection(o2) || o2 == null && IsEmptyCollection(o1);
if (typeof(T) is IDictionary)
return AreDictEqual((IDictionary)o1, (IDictionary)o2);
if (typeof(T) is System.Collections.ICollection)
return AreCollectionsEqual((ICollection)o1, (ICollection)o2);
return o1.Equals(o2);
}
private static bool IsEmptyCollection(object obj)
{
ICollection collection = obj as ICollection;
return collection != null && collection.Count == 0;
}
/// <summary>
/// Test to see if two dictionaries are equal. This dictionary comparison method places a call to AreEqual
/// for underlying objects.
/// </summary>
private static bool AreDictEqual(IDictionary d1, IDictionary d2)
{
if (d1.Count != d2.Count)
return false;
foreach (object k in d1.Keys)
{
if (!d2.Contains(k) || !AreEqual(d2[k], d1[k]))
return false;
}
return true;
}
/// <summary>
/// Test to see if two collections are equal. The collections are equal if they have the same elements,
/// in the same order, and quantity. Elements are equal if their values are equal.
/// </summary>
private static bool AreCollectionsEqual(ICollection c1, ICollection c2)
{
if (c1.Count != c2.Count)
return false;
IEnumerator c1Enum = c1.GetEnumerator();
IEnumerator c2Enum = c2.GetEnumerator();
while (c1Enum.MoveNext() && c2Enum.MoveNext())
{
if (!AreEqual(c1Enum.Current, c2Enum.Current))
return false;
}
return true;
}
public static bool DictEquals<K, V>(Dictionary<K, V> d1,
Dictionary<K, V> d2)
{
if (d1 == null && d2 == null)
return true;
if (d1 == null || d2 == null)
return false;
if (d1.Count != d2.Count)
return false;
foreach (K k in d1.Keys)
{
if (!d2.ContainsKey(k) || !EqualOrEquallyNull(d2[k], d1[k]))
return false;
}
return true;
}
internal static bool EqualOrEquallyNull(object o1, object o2)
{
return o1 == null ? o2 == null : o1.Equals(o2);
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="opaqueRefs">Must not be null.</param>
/// <returns></returns>
internal static string[] RefListToStringArray<T>(List<XenRef<T>> opaqueRefs) where T : XenObject<T>
{
string[] result = new string[opaqueRefs.Count];
int i = 0;
foreach (XenRef<T> opaqueRef in opaqueRefs)
result[i++] = opaqueRef.opaque_ref;
return result;
}
public static bool IsNullOrEmptyOpaqueRef(string opaqueRef)
{
return string.IsNullOrEmpty(opaqueRef) || (string.Compare(opaqueRef, NullOpaqueRef, true) == 0);
}
/// <summary>
/// Converts a List of objects into a string array by calling the ToString() method of each list element.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list">Must not be null. Must not contain null. May contain no elements.</param>
/// <returns></returns>
internal static string[] ObjectListToStringArray<T>(List<T> list)
{
string[] result = new string[list.Count];
int i = 0;
foreach (T t in list)
result[i++] = t.ToString();
return result;
}
/// <summary>
/// Parses an array of strings into a List of members of the given enum T.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="input">Must not be null. Must not contain null. May have Length zero.</param>
/// <returns></returns>
internal static List<T> StringArrayToEnumList<T>(string[] input)
{
List<T> result = new List<T>();
foreach (string s in input)
{
try
{
result.Add((T)Enum.Parse(typeof(T), s));
}
catch (ArgumentException)
{
}
}
return result;
}
/// <summary>
/// Parses an array of objects into a List of members of the given enum T by first calling ToString() on each array element.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="input">Must not be null. Must not contain null. May have Length zero.</param>
/// <returns></returns>
internal static List<T> ObjectArrayToEnumList<T>(object[] input)
{
List<T> result = new List<T>();
foreach (object o in input)
{
try
{
result.Add((T)Enum.Parse(typeof(T), o.ToString()));
}
catch (ArgumentException)
{
}
}
return result;
}
internal static List<Message> Proxy_MessageArrayToMessageList(Proxy_Message[] input)
{
List<Message> result = new List<Message>();
foreach (Proxy_Message pm in input)
{
result.Add(new Message(pm));
}
return result;
}
internal static List<Data_source> Proxy_Data_sourceArrayToData_sourceList(Proxy_Data_source[] input)
{
List<Data_source> result = new List<Data_source>();
foreach (Proxy_Data_source pd in input)
{
result.Add(new Data_source(pd));
}
return result;
}
internal static Object EnumParseDefault(Type t, string s)
{
try
{
return Enum.Parse(t, s == null ? null : s.Replace('-','_'));
}
catch (ArgumentException)
{
try
{
return Enum.Parse(t, "unknown");
}
catch (ArgumentException)
{
try
{
return Enum.Parse(t, "Unknown");
}
catch (ArgumentException)
{
return 0;
}
}
}
}
}
}