mirror of
https://github.com/xcp-ng/xenadmin.git
synced 2024-11-24 22:06:59 +01:00
272 lines
11 KiB
C#
272 lines
11 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
|
|
*
|
|
* 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 XenAPI;
|
|
using XenAdmin.Core;
|
|
|
|
|
|
|
|
namespace XenAdmin.Wlb
|
|
{
|
|
/// <summary>
|
|
/// A Static class for describing and maintining the current state of the Wlb Server connection
|
|
/// </summary>
|
|
public static class WlbServerState
|
|
{
|
|
/// <summary>
|
|
/// The key string used to store the connection status in Pool's OtherConfig dictionary
|
|
/// </summary>
|
|
private const string WLB_CONNECTION_STATUS = "WlbConnectionStatus";
|
|
/// <summary>
|
|
/// The key string used to store the connection error message in the pool's OtherConfig dictionary
|
|
/// </summary>
|
|
private const string WLB_CONNECTION_ERROR = "WlbConnectionError";
|
|
|
|
/// <summary>
|
|
/// Public enumeration of the possible Wlb Conection states
|
|
/// </summary>
|
|
public enum ServerState
|
|
{
|
|
Unknown = 0,
|
|
NotConfigured,
|
|
Enabled,
|
|
Disabled,
|
|
ConnectionError
|
|
}
|
|
|
|
/// <summary>
|
|
/// object for locking SetState
|
|
/// </summary>
|
|
private static Object _lockObject = new Object();
|
|
|
|
/// <summary>
|
|
/// Public method for updating the Wlb Server state when there is no error (Failure).
|
|
/// This method clears any existing failure message for the connection
|
|
/// </summary>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <param name="state">The current state of the pool's Wlb Server State</param>
|
|
public static void SetState(Pool pool, ServerState state)
|
|
{
|
|
SetState(pool.Connection.Session, pool, state, null);
|
|
}
|
|
/// <summary>
|
|
/// Public method for updating the Wlb Server state. If the state is ConnectionFailure and
|
|
/// a Failure is supplied, it's message is stored in the OtherConfig
|
|
/// </summary>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <param name="state">The current state of the pool's Wlb Server State</param>
|
|
/// <param name="failure">The Failure (if any) describing the Connection Error</param>
|
|
public static void SetState(Pool pool, ServerState state, Failure failure)
|
|
{
|
|
SetState(pool.Connection.Session, pool, state, failure);
|
|
}
|
|
/// <summary>
|
|
/// Public method for updating the Wlb Server state when there is no error (Failure) and need specific seesion information.
|
|
/// This method clears any existing failure message for the connection
|
|
/// </summary>
|
|
/// <param name="session">The User session use to do this operation</param>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <param name="state">The current state of the pool's Wlb Server State</param>
|
|
public static void SetState(Session session, Pool pool, ServerState state)
|
|
{
|
|
SetState(session, pool, state, null);
|
|
}
|
|
/// <summary>
|
|
/// Public method for updating the Wlb Server state. If the state is ConnectionFailure and
|
|
/// a Failure is supplied, it's message is stored in the OtherConfig
|
|
/// </summary>
|
|
/// <param name="session">The User session use to do this operation</param>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <param name="state">The current state of the pool's Wlb Server State</param>
|
|
/// <param name="failure">The Failure (if any) describing the Connection Error</param>
|
|
public static void SetState(Session session, Pool pool, ServerState state, Failure failure)
|
|
{
|
|
//only update the state if new value if different than current value
|
|
// this is to cut down on unneeded Pool_PropertiesChanged events
|
|
if (GetState(pool) != state)
|
|
{
|
|
// set a lock so we are setting state one at a time
|
|
lock (_lockObject)
|
|
{
|
|
Helpers.SetOtherConfig(session, pool, WLB_CONNECTION_STATUS, state.ToString());
|
|
|
|
if (null != failure && state == ServerState.ConnectionError)
|
|
{
|
|
string error = failure.Message;
|
|
|
|
if (failure.Message == FriendlyErrorNames.WLB_INTERNAL_ERROR)
|
|
{
|
|
var wlbError = ConvertWlbError(failure.ErrorDescription[1]);
|
|
|
|
if (wlbError != null)
|
|
error = wlbError;
|
|
}
|
|
|
|
Helpers.SetOtherConfig(session, pool, WLB_CONNECTION_ERROR, error);
|
|
}
|
|
else
|
|
{
|
|
Helpers.SetOtherConfig(session, pool, WLB_CONNECTION_ERROR, String.Empty);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Public method for retrieving the current state of a Pool's Wlb server connection
|
|
/// </summary>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <returns>ServerState enumeration representing the current Wlb server conection state</returns>
|
|
public static ServerState GetState(Pool pool)
|
|
{
|
|
if (null == Helpers.GetOtherConfig(pool) && !CheckForKnownState(pool))
|
|
{
|
|
return ServerState.NotConfigured;
|
|
}
|
|
else
|
|
{
|
|
if (!Helpers.GetOtherConfig(pool).ContainsKey(WLB_CONNECTION_STATUS))
|
|
{
|
|
return ServerState.NotConfigured;
|
|
}
|
|
else
|
|
{
|
|
return (ServerState)Enum.Parse(typeof(ServerState), Helpers.GetOtherConfig(pool)[WLB_CONNECTION_STATUS]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Private method for determining (initializing) the state of the WlbConnectin when there is
|
|
/// nothing yet stored in OtherConfig
|
|
/// </summary>
|
|
/// <param name="pool">The pool whose Wlb connection state we are updating</param>
|
|
/// <returns>Bool denoting whether we were able to ascertain the current server state</returns>
|
|
private static bool CheckForKnownState(Pool pool)
|
|
{
|
|
bool stateFound = false;
|
|
|
|
if (Helpers.WlbEnabled(pool.Connection))
|
|
{
|
|
SetState(pool, ServerState.Enabled);
|
|
stateFound = true;
|
|
}
|
|
else if (String.IsNullOrEmpty(pool.wlb_url))
|
|
{
|
|
SetState(pool, ServerState.NotConfigured);
|
|
stateFound = true;
|
|
}
|
|
return stateFound;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Public method for retrieving the Failure message string stored in OtherConfig for the pool
|
|
/// </summary>
|
|
/// <param name="pool">The pool whose Wlb connection state we are retrieving</param>
|
|
/// <returns>A string containing the Failure message, or an empty string</returns>
|
|
public static string GetFailureMessage(Pool pool)
|
|
{
|
|
string message = String.Empty;
|
|
|
|
if (null != Helpers.GetOtherConfig(pool) && Helpers.GetOtherConfig(pool).ContainsKey(WLB_CONNECTION_ERROR))
|
|
{
|
|
message = Helpers.GetOtherConfig(pool)[WLB_CONNECTION_ERROR];
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
public static string ConvertWlbError(string codeString)
|
|
{
|
|
if (!int.TryParse(codeString, out var code))
|
|
return null;
|
|
|
|
switch (code)
|
|
{
|
|
case 5:
|
|
return Messages.WLB_ERROR_5;
|
|
case 6:
|
|
return Messages.WLB_ERROR_6;
|
|
case 4000:
|
|
return Messages.WLB_ERROR_4000;
|
|
case 4001:
|
|
return Messages.WLB_ERROR_4001;
|
|
case 4002:
|
|
return Messages.WLB_ERROR_4002;
|
|
case 4003:
|
|
return Messages.WLB_ERROR_4003;
|
|
case 4004:
|
|
return Messages.WLB_ERROR_4004;
|
|
case 4005:
|
|
return Messages.WLB_ERROR_4005;
|
|
case 4006:
|
|
return Messages.WLB_ERROR_4006;
|
|
case 4007:
|
|
return Messages.WLB_ERROR_4007;
|
|
case 4008:
|
|
return Messages.WLB_ERROR_4008;
|
|
case 4009:
|
|
return Messages.WLB_ERROR_4009;
|
|
case 4010:
|
|
return Messages.WLB_ERROR_4010;
|
|
case 4011:
|
|
return Messages.WLB_ERROR_4011;
|
|
case 4012:
|
|
return Messages.WLB_ERROR_4012;
|
|
case 4013:
|
|
return Messages.WLB_ERROR_4013;
|
|
case 4014:
|
|
return Messages.WLB_ERROR_4014;
|
|
case 4015:
|
|
return Messages.WLB_ERROR_4015;
|
|
case 4016:
|
|
return Messages.WLB_ERROR_4016;
|
|
case 4017:
|
|
return Messages.WLB_ERROR_4017;
|
|
case 4018:
|
|
return Messages.WLB_ERROR_4018;
|
|
case 4019:
|
|
return Messages.WLB_ERROR_4019;
|
|
case 4020:
|
|
return Messages.WLB_ERROR_4020;
|
|
case 4021:
|
|
return Messages.WLB_ERROR_4021;
|
|
case 4022:
|
|
return Messages.WLB_ERROR_4022;
|
|
case 4023:
|
|
return Messages.WLB_ERROR_4023;
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
}
|