mirror of
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390 lines
15 KiB
C#
390 lines
15 KiB
C#
/* 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 System.ComponentModel;
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using System.Drawing;
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using System.Threading;
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using System.Windows.Forms;
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using XenAdmin.Core;
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using XenAdmin.Dialogs;
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using XenAPI;
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using System.Net;
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namespace XenAdmin.Network.StorageLink
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{
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public class StorageLinkConnectionManager : ReadOnlyChangeableList<StorageLinkConnection>, IDisposable
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{
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private readonly Func<ISynchronizeInvoke> _synchronizer;
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private readonly ChangeableList<IXenConnection> _xenConnections;
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private readonly object _refreshLock = new object();
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private readonly object _collectionLock = new object();
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private readonly object _xenConnectionsLock;
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private bool _disposed;
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public event EventHandler<CreatedMockStorageLinkConnectionEventArgs> CreatedMockStorageLinkConnection;
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public StorageLinkConnectionManager(Func<ISynchronizeInvoke> synchronizer, ChangeableList<IXenConnection> xenConnections, object xenConnectionsLock)
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{
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Util.ThrowIfParameterNull(xenConnections, "xenConnections");
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Util.ThrowIfParameterNull(xenConnectionsLock, "xenConnectionsLock");
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_synchronizer = synchronizer;
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_xenConnections = xenConnections;
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_xenConnectionsLock = xenConnectionsLock;
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_xenConnections.CollectionChanged += XenConnections_CollectionChanged;
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}
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private void XenConnections_CollectionChanged(object sender, CollectionChangeEventArgs e)
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{
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var connection = (IXenConnection)e.Element;
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if (e.Action == CollectionChangeAction.Add)
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{
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connection.CachePopulated += Refresh;
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connection.ConnectionStateChanged += Refresh;
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}
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else if (e.Action == CollectionChangeAction.Remove)
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{
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connection.CachePopulated -= Refresh;
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connection.ConnectionStateChanged -= Refresh;
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Pool pool = Helpers.GetPoolOfOne(connection);
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if (pool != null)
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{
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pool.PropertyChanged -= pool_PropertyChanged;
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}
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}
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if (Program.MainWindow != null)
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Program.BeginInvoke(Program.MainWindow, Refresh);
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else
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{
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Refresh();
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}
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}
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private void Refresh(object sender, EventArgs e)
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{
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Pool pool = Helpers.GetPoolOfOne((IXenConnection)sender);
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if (pool != null)
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{
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pool.PropertyChanged -= pool_PropertyChanged;
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pool.PropertyChanged += pool_PropertyChanged;
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}
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Refresh();
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}
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private void pool_PropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == "other_config" || e.PropertyName == "restrictions")
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{
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Refresh();
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}
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}
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private List<IXenConnection> GetXenConnectionsCopy()
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{
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lock (_xenConnectionsLock)
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{
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return new List<IXenConnection>(_xenConnections);
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}
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}
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private void Invoke(MethodInvoker method)
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{
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if (_synchronizer() != null)
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{
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_synchronizer().Invoke(method, new object[0]);
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}
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}
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/// <summary>
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/// Moves deprecated locally stored StorageLink creds to the pool other-config. This can only be done by
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/// pool operators and above.
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/// </summary>
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private void MoveLocalCredentials()
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{
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// StorageLink credentials are stored in 3 places:
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// 1. In the device-config of any StorageLink PBDs.
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// 2. Locally in the Settings, once for each pool. This was a poor design choice in Midnight Ride.
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// 3. In the pool other-config. This is a replacement for the local settings. Implemented in Cowley.
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// This method moves locally stored settings to the pool other-config. This might not be
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// possible if the user doesn't have the privileges to do this.
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foreach (IXenConnection c in GetXenConnectionsCopy())
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{
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Pool pool = Helpers.GetPoolOfOne(c);
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if (c.IsConnected && pool != null && Helpers.MidnightRideOrGreater(c) && !Helpers.FeatureForbidden(c, Host.RestrictStorageChoices))
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{
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Settings.CslgCredentials localCreds = null;
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Invoke(() => localCreds = Settings.GetCslgCredentials(c));
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if (localCreds != null && !string.IsNullOrEmpty(localCreds.Host) && !string.IsNullOrEmpty(localCreds.Username))
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{
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StorageLinkCredentials creds = pool.GetStorageLinkCredentials();
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if (creds == null || string.IsNullOrEmpty(creds.Host))
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{
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// there aren't any creds on the pool object, but there are some locally.
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// Attempt to move them.
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try
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{
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string secretRef = Secret.get_by_uuid(c.Session, localCreds.PasswordSecret);
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string password = Secret.get_value(c.Session, secretRef);
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pool.SetStorageLinkCredentials(localCreds.Host, localCreds.Username, password);
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}
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catch (Failure)
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{
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}
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catch (WebException)
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{
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}
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}
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// remove the local creds.
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Invoke(() => Settings.SetCslgCredentials(c, new Settings.CslgCredentials(null, null, null)));
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}
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}
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}
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}
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/// <summary>
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/// Gets all storage link credentials across all credentials.
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/// </summary>
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private List<StorageLinkCredentials> GetAllStorageLinkCredentials()
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{
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var output = new List<StorageLinkCredentials>();
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foreach (IXenConnection connection in GetXenConnectionsCopy())
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{
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if (connection.IsConnected && !Helpers.FeatureForbidden(connection, XenAPI.Host.RestrictStorageChoices) && !Helpers.BostonOrGreater(connection) && Helpers.CowleyOrGreater(connection))
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{
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Pool pool = Helpers.GetPoolOfOne(connection);
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if (pool != null) // can be null if still connecting.
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{
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var allCreds = new List<StorageLinkCredentials> { pool.GetStorageLinkCredentials() };
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allCreds.AddRange(Array.ConvertAll(connection.Cache.PBDs, p => p.GetStorageLinkCredentials()));
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allCreds.RemoveAll(c => c == null || !c.IsValid || string.IsNullOrEmpty(c.Password));
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foreach (StorageLinkCredentials creds in allCreds)
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{
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if (null == output.Find(c => c.Host == creds.Host && c.Username == creds.Username))
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{
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output.Add(creds);
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}
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}
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}
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}
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}
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return output;
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}
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private void Refresh()
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{
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if (!_disposed)
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{
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ThreadPool.QueueUserWorkItem(Refresh);
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}
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}
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private void LaunchErrorDialog(string hostName)
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{
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new ThreeButtonDialog(new ThreeButtonDialog.Details(SystemIcons.Error,
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String.Format(Messages.PROBLEM_STORAGELINK_CONNECTION_FAILED,
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hostName).Replace("\\n", "\n"))).ShowDialog(Program.MainWindow);
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}
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private void Refresh(object state)
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{
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lock (_refreshLock)
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{
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MoveLocalCredentials();
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List<StorageLinkCredentials> allCreds = GetAllStorageLinkCredentials();
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// remove all storagelink connections that have out-of-date credentials
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RemoveAll(s => null == allCreds.Find(c => c.Host == s.Host && c.Username == s.Username && c.Password == s.Password));
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// now add new storagelink connections
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foreach (StorageLinkCredentials creds in allCreds)
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{
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if (Find(s => s.Host == creds.Host && s.Username == creds.Username) == null)
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{
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StorageLinkConnection con;
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if (Program.RunInAutomatedTestMode)
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{
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var mockWebService = new MockStorageLinkWebService(creds.Host, creds.Username, creds.Password);
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con = new StorageLinkConnection(_synchronizer(), mockWebService);
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OnCreatedMockStorageLinkConnection(new CreatedMockStorageLinkConnectionEventArgs(mockWebService, con));
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}
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else
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{
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con = new StorageLinkConnection(_synchronizer(), creds.Host, creds.Username, creds.Password);
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}
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Invoke(() => InsertItem(Count, con));
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}
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}
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}
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}
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protected override int RemoveAll(Predicate<StorageLinkConnection> match)
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{
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lock (_collectionLock)
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{
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return base.RemoveAll(match);
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}
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}
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protected override void Clear()
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{
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lock (_collectionLock)
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{
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base.Clear();
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}
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}
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protected override void RemoveItem(int index)
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{
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this[index].EndConnect();
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lock (_collectionLock)
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{
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this[index].ConnectionStateChanged -= item_Connected;
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base.RemoveItem(index);
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}
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}
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protected override void InsertItem(int index, StorageLinkConnection item)
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{
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lock (_collectionLock)
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{
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item.ConnectionStateChanged += item_Connected;
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base.InsertItem(index, item);
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}
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item.BeginConnect();
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}
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private void item_Connected(object sender, ConnectionStateChangedEventArgs e)
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{
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StorageLinkConnection c1 = (StorageLinkConnection)sender;
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if (e.ConnectionState == StorageLinkConnectionState.Disconnected && c1.SavedException != null)
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{
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LaunchErrorDialog(c1.Host);
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c1.SavedException = null;
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}
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if (e.ConnectionState == StorageLinkConnectionState.Connected)
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{
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// if this connection is a dup of another connection then remove it
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lock (_collectionLock)
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{
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if (null != Find(c2 =>
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{
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StorageLinkServer s1 = c1.Cache.Server;
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StorageLinkServer s2 = c2.Cache.Server;
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return s1 != null && s1 != s2 && s1.Equals(s2);
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}))
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{
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RemoveItem(IndexOf(c1));
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}
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}
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}
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}
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public List<StorageLinkConnection> GetCopy()
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{
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lock (_collectionLock)
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{
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return new List<StorageLinkConnection>(this);
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}
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}
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protected virtual void Dispose(bool disposing)
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{
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if (disposing && !_disposed)
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{
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_disposed = true;
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_xenConnections.CollectionChanged -= XenConnections_CollectionChanged;
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Clear();
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}
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}
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protected virtual void OnCreatedMockStorageLinkConnection(CreatedMockStorageLinkConnectionEventArgs e)
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{
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var handler = CreatedMockStorageLinkConnection;
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if (handler != null)
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{
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handler(this, e);
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}
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}
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#region IDisposable Members
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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#endregion
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}
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public class CreatedMockStorageLinkConnectionEventArgs : EventArgs
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{
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public MockStorageLinkWebService MockWebService { get; private set; }
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public StorageLinkConnection StorageLinkConnection { get; private set; }
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public CreatedMockStorageLinkConnectionEventArgs(MockStorageLinkWebService mockWebService, StorageLinkConnection storageLinkConnection)
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{
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Util.ThrowIfParameterNull(storageLinkConnection, "connection");
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MockWebService = mockWebService;
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StorageLinkConnection = storageLinkConnection;
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}
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}
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}
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