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xenadmin/XenModel/Network/Cache.cs
Gabor Apati-Nagy b8e447afa3 CA-196315: XS65ESP1018 not showing up in XenCenter Updates (on staging) 
Fixed code to treat uuids of patches case-insensitive when consuming, but not changing them (eg. to lowercase) to keep compatibility with older XAPIs.

Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>
2016-02-08 10:14:05 +00:00

632 lines
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/* 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:
*
* * 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
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*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
using XenAPI;
using XenAdmin.Core;
using XenAdmin.Model;
using System.Linq;
using System.Diagnostics;
namespace XenAdmin.Network
{
public class Cache : ICache
{
#pragma warning disable 0414
// keep sorted please
private readonly ChangeableDictionary<XenRef<Bond>, Bond> _bond = new ChangeableDictionary<XenRef<Bond>, Bond>();
private readonly ChangeableDictionary<XenRef<Blob>, Blob> _blob = new ChangeableDictionary<XenRef<Blob>, Blob>();
private readonly ChangeableDictionary<XenRef<XenAPI.Console>, XenAPI.Console> _console = new ChangeableDictionary<XenRef<XenAPI.Console>, XenAPI.Console>();
private readonly ChangeableDictionary<XenRef<Folder>, Folder> _folders = new ChangeableDictionary<XenRef<Folder>, Folder>();
private readonly ChangeableDictionary<XenRef<DockerContainer>, DockerContainer> _dockerContainers = new ChangeableDictionary<XenRef<DockerContainer>, DockerContainer>();
private readonly ChangeableDictionary<XenRef<GPU_group>, GPU_group> _gpu_groups = new ChangeableDictionary<XenRef<GPU_group>, GPU_group>();
private readonly ChangeableDictionary<XenRef<Host>, Host> _host = new ChangeableDictionary<XenRef<Host>, Host>();
private readonly ChangeableDictionary<XenRef<Host_cpu>, Host_cpu> _host_cpu = new ChangeableDictionary<XenRef<Host_cpu>, Host_cpu>();
private readonly ChangeableDictionary<XenRef<Host_crashdump>, Host_crashdump> _host_crashdump = new ChangeableDictionary<XenRef<Host_crashdump>, Host_crashdump>();
private readonly ChangeableDictionary<XenRef<Host_metrics>, Host_metrics> _host_metrics = new ChangeableDictionary<XenRef<Host_metrics>, Host_metrics>();
private readonly ChangeableDictionary<XenRef<Host_patch>, Host_patch> _host_patch = new ChangeableDictionary<XenRef<Host_patch>, Host_patch>();
private readonly ChangeableDictionary<XenRef<Message>, Message> _message = new ChangeableDictionary<XenRef<Message>, Message>();
private readonly ChangeableDictionary<XenRef<XenAPI.Network>, XenAPI.Network> _network = new ChangeableDictionary<XenRef<XenAPI.Network>, XenAPI.Network>();
private readonly ChangeableDictionary<XenRef<PBD>, PBD> _pbd = new ChangeableDictionary<XenRef<PBD>, PBD>();
private readonly ChangeableDictionary<XenRef<PCI>, PCI> _pcis = new ChangeableDictionary<XenRef<PCI>, PCI>();
private readonly ChangeableDictionary<XenRef<PGPU>, PGPU> _pgpu = new ChangeableDictionary<XenRef<PGPU>, PGPU>();
private readonly ChangeableDictionary<XenRef<PIF>, PIF> _pif = new ChangeableDictionary<XenRef<PIF>, PIF>();
private readonly ChangeableDictionary<XenRef<PIF_metrics>, PIF_metrics> _pif_metrics = new ChangeableDictionary<XenRef<PIF_metrics>, PIF_metrics>();
private readonly ChangeableDictionary<XenRef<Pool>, Pool> _pool = new ChangeableDictionary<XenRef<Pool>, Pool>();
private readonly ChangeableDictionary<XenRef<Pool_patch>, Pool_patch> _pool_patch = new ChangeableDictionary<XenRef<Pool_patch>, Pool_patch>();
private readonly ChangeableDictionary<XenRef<Role>, Role> _role = new ChangeableDictionary<XenRef<Role>, Role>();
private readonly ChangeableDictionary<XenRef<SM>, SM> _sm = new ChangeableDictionary<XenRef<SM>, SM>();
private readonly ChangeableDictionary<XenRef<SR>, SR> _sr = new ChangeableDictionary<XenRef<SR>, SR>();
private readonly ChangeableDictionary<XenRef<Subject>, Subject> _subject = new ChangeableDictionary<XenRef<Subject>, Subject>();
private readonly ChangeableDictionary<XenRef<Task>, Task> _task = new ChangeableDictionary<XenRef<Task>, Task>();
private readonly ChangeableDictionary<XenRef<Tunnel>, Tunnel> _tunnel = new ChangeableDictionary<XenRef<Tunnel>, Tunnel>();
private readonly ChangeableDictionary<XenRef<VBD>, VBD> _vbd = new ChangeableDictionary<XenRef<VBD>, VBD>();
private readonly ChangeableDictionary<XenRef<VBD_metrics>, VBD_metrics> _vbd_metrics = new ChangeableDictionary<XenRef<VBD_metrics>, VBD_metrics>();
private readonly ChangeableDictionary<XenRef<VDI>, VDI> _vdi = new ChangeableDictionary<XenRef<VDI>, VDI>();
private readonly ChangeableDictionary<XenRef<VGPU>, VGPU> _vgpu = new ChangeableDictionary<XenRef<VGPU>, VGPU>();
private readonly ChangeableDictionary<XenRef<VGPU_type>, VGPU_type> _vgpu_types = new ChangeableDictionary<XenRef<VGPU_type>, VGPU_type>();
private readonly ChangeableDictionary<XenRef<VIF>, VIF> _vif = new ChangeableDictionary<XenRef<VIF>, VIF>();
private readonly ChangeableDictionary<XenRef<VIF_metrics>, VIF_metrics> _vif_metrics = new ChangeableDictionary<XenRef<VIF_metrics>, VIF_metrics>();
private readonly ChangeableDictionary<XenRef<VLAN>, VLAN> _vlan = new ChangeableDictionary<XenRef<VLAN>, VLAN>();
private readonly ChangeableDictionary<XenRef<VM>, VM> _vm = new ChangeableDictionary<XenRef<VM>, VM>();
private readonly ChangeableDictionary<XenRef<VM_metrics>, VM_metrics> _vm_metrics = new ChangeableDictionary<XenRef<VM_metrics>, VM_metrics>();
private readonly ChangeableDictionary<XenRef<VM_guest_metrics>, VM_guest_metrics> _vm_guest_metrics = new ChangeableDictionary<XenRef<VM_guest_metrics>, VM_guest_metrics>();
private readonly ChangeableDictionary<XenRef<VMPP>, VMPP> _vmmp = new ChangeableDictionary<XenRef<VMPP>, VMPP>();
private readonly ChangeableDictionary<XenRef<VM_appliance>, VM_appliance> _vm_appliance = new ChangeableDictionary<XenRef<VM_appliance>, VM_appliance>();
private readonly ChangeableDictionary<XenRef<Crashdump>, Crashdump> _crashdump = new ChangeableDictionary<XenRef<Crashdump>, Crashdump>();
#pragma warning restore 0414
private readonly Dictionary<Type, IDictionary> dictionaries = new Dictionary<Type, IDictionary>();
public Cache()
{
foreach (FieldInfo f in GetType().GetFields(BindingFlags.DeclaredOnly | BindingFlags.Instance | BindingFlags.NonPublic))
{
if (f.FieldType.Name.StartsWith("ChangeableDictionary"))
{
dictionaries.Add(f.FieldType.GetGenericArguments()[0].GetGenericArguments()[0],
(IDictionary)f.GetValue(this));
}
}
}
public Bond[] Bonds
{
get { return contents(_bond); }
}
public VMPP[] VMPPs
{
get { return contents(_vmmp); }
}
public VM_appliance[] VM_appliances
{
get { return contents(_vm_appliance); }
}
public Folder[] Folders
{
get { return contents(_folders); }
}
public DockerContainer[] DockerContainers
{
get { return contents(_dockerContainers); }
}
public GPU_group[] GPU_groups
{
get { return contents(_gpu_groups); }
}
public Host[] Hosts
{
get { return contents(_host); }
}
public int HostCount
{
get { return _host.Count; }
}
public Host_cpu[] Host_cpus
{
get { return contents(_host_cpu); }
}
public XenAPI.Message[] Messages
{
get { return contents(_message); }
}
public XenAPI.Network[] Networks
{
get { return contents(_network); }
}
public PBD[] PBDs
{
get { return contents(_pbd); }
}
public PCI[] PCIs
{
get { return contents(_pcis); }
}
public PGPU[] PGPUs
{
get { return contents(_pgpu); }
}
public PIF[] PIFs
{
get { return contents(_pif); }
}
public Pool[] Pools
{
get { return contents(_pool); }
}
public Pool_patch[] Pool_patches
{
get { return contents(_pool_patch); }
}
public Role[] Roles
{
get { return contents(_role); }
}
public SM[] SMs
{
get { return contents(_sm); }
}
public SR[] SRs
{
get { return contents(_sr); }
}
public Subject[] Subjects
{
get { return contents(_subject); }
}
public Tunnel[] Tunnels
{
get { return contents(_tunnel); }
}
public VBD[] VBDs
{
get { return contents(_vbd); }
}
public VDI[] VDIs
{
get { return contents(_vdi); }
}
public VGPU[] VGPUs
{
get { return contents(_vgpu); }
}
public VGPU_type[] VGPU_types
{
get { return contents(_vgpu_types); } }
public VIF[] VIFs
{
get { return contents(_vif); }
}
public VM[] VMs
{
get { return contents(_vm); }
}
private static T[] contents<T>(ChangeableDictionary<XenRef<T>, T> d) where T : XenObject<T>
{
lock (d)
{
T[] result = new T[d.Values.Count];
int i = 0;
foreach (T o in d.Values)
{
result[i] = o;
i++;
}
return result;
}
}
/// <summary>
/// Returns the collection for the given type, or null if no such dictionary is present.
/// </summary>
private IDictionary GetCollectionForType(Type t)
{
return dictionaries.ContainsKey(t) ? dictionaries[t] : null;
}
public void DeregisterCollectionChanged<T>(CollectionChangeEventHandler h) where T : XenObject<T>
{
ChangeableDictionary<XenRef<T>, T> d =
GetCollectionForType(typeof(T)) as ChangeableDictionary<XenRef<T>, T>;
d.CollectionChanged -= h;
}
public void RegisterCollectionChanged<T>(CollectionChangeEventHandler h) where T : XenObject<T>
{
ChangeableDictionary<XenRef<T>, T> d =
GetCollectionForType(typeof(T)) as ChangeableDictionary<XenRef<T>, T>;
d.CollectionChanged -= h;
d.CollectionChanged += h;
}
public void DeregisterBatchCollectionChanged<T>(EventHandler h) where T : XenObject<T>
{
ChangeableDictionary<XenRef<T>, T> d =
GetCollectionForType(typeof(T)) as ChangeableDictionary<XenRef<T>, T>;
if (d == null)
return;
d.BatchCollectionChanged -= h;
}
public void RegisterBatchCollectionChanged<T>(EventHandler h) where T : XenObject<T>
{
ChangeableDictionary<XenRef<T>, T> d =
GetCollectionForType(typeof(T)) as ChangeableDictionary<XenRef<T>, T>;
if (d == null)
return;
d.BatchCollectionChanged -= h;
d.BatchCollectionChanged += h;
}
public void AddAll<T>(List<T> l, Predicate<T> p) where T : XenObject<T>
{
IDictionary d = GetCollectionForType(typeof(T));
if (d == null)
return;
lock (d)
{
if (p == null)
foreach (T value in d.Values)
l.Add(value);
else
foreach (T value in d.Values)
if (p(value))
l.Add(value);
}
}
private static MethodInfo ClearMethod = typeof(Cache).GetMethod("Clear_", BindingFlags.NonPublic | BindingFlags.Instance);
public void Clear()
{
foreach (IDictionary d in dictionaries.Values)
{
lock (d)
{
object[] args = { d };
ClearMethod.MakeGenericMethod(APIType(d)).Invoke(this, args);
}
INotifyCollectionChanged d1 = d as INotifyCollectionChanged;
if (d1 != null)
d1.OnBatchCollectionChanged();
}
}
private static MethodInfo UpdateFromMethod = typeof(Cache).GetMethod("UpdateFrom_", BindingFlags.NonPublic | BindingFlags.Instance);
/// <returns>true if some changes have been made. This is used to indicate that XenObjectsUpdated should be fired by IXenConnection.</returns>
public bool UpdateFrom(IXenConnection connection, IList<ObjectChange> changes)
{
Dictionary<IDictionary, object> tofire = new Dictionary<IDictionary, object>();
foreach (ObjectChange o in changes)
{
if (IgnoreObjectChange(o))
continue;
IDictionary d = GetCollectionForType(o.type);
if (d == null)
continue;
object[] args = { connection, d, o };
UpdateFromMethod.MakeGenericMethod(o.type).Invoke(this, args);
tofire[d] = null;
}
bool result = false;
foreach (IDictionary d in tofire.Keys)
{
INotifyCollectionChanged n = d as INotifyCollectionChanged;
if (n != null)
n.OnBatchCollectionChanged();
result = true;
}
return result;
}
/// <summary>
/// For performance reasons, we ignore some events. These are:
/// 1. The heartbeat event from xapi, which is a "change" on the pool object, but where the object doesn't actually change.
/// 2. Tasks that are frequent and which we don't care about, like SR.scan.
/// 3. Changes on SR that only toggle current_operations. These happen at the same time as the
/// periodic SR.scan.
/// </summary>
private bool IgnoreObjectChange(ObjectChange obj)
{
if (obj.value == null)
{
// Object is being deleted. Never ignore these!
return false;
}
else if (obj.type == typeof(Task))
{
Task task = (Task)obj.value;
return task.IgnoreInCacheUpdate();
}
else if (obj.type == typeof(Pool))
{
Pool newPool = (Pool)obj.value;
Pool oldPool = Resolve(new XenRef<Pool>(obj.xenref));
return oldPool != null && newPool.DeepEquals(oldPool, false); //We do want to see changes in the Pool.current_operations.
}
else if (obj.type == typeof(SR))
{
SR newSR = (SR)obj.value;
SR oldSR = Resolve(new XenRef<SR>(obj.xenref));
return oldSR != null && newSR.DeepEquals(oldSR, true);
}
else
{
return false;
}
}
public T Find_By_Uuid<T>(string uuid) where T : XenObject<T>
{
Type t = typeof(T);
PropertyInfo p = t.GetProperty("uuid", BindingFlags.Public | BindingFlags.Instance);
if (p == null)
return null;
ChangeableDictionary<XenRef<T>, T> d = (ChangeableDictionary<XenRef<T>, T>)GetCollectionForType(t);
lock (d)
{
foreach (T m in d.Values)
{
if (string.Equals((string)p.GetValue(m, null), uuid, StringComparison.OrdinalIgnoreCase))
return m;
}
}
return null;
}
/// <summary>
/// Find a XenRef corresponding to the given XenObject, using its UUID.
/// Returns null if no such object is found.
/// </summary>
public XenRef<T> FindRef<T>(T needle) where T : XenObject<T>
{
Type t = typeof(T);
PropertyInfo p = t.GetProperty("uuid", BindingFlags.Public | BindingFlags.Instance);
if (p == null)
return null;
string uuid = (string)p.GetValue(needle, null);
ChangeableDictionary<XenRef<T>, T> d = (ChangeableDictionary<XenRef<T>, T>)GetCollectionForType(t);
lock (d)
{
foreach (KeyValuePair<XenRef<T>, T> kvp in d)
{
if (string.Equals((string)p.GetValue(kvp.Value, null), uuid, StringComparison.OrdinalIgnoreCase))
return kvp.Key;
}
}
return null;
}
public bool TryResolve<T>(XenRef<T> xenRef, out T result) where T : XenObject<T>
{
result = Resolve(xenRef);
return result != null;
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="xenRef">May be null, in which case null is returned. May not be a null ref.</param>
/// <returns></returns>
public T Resolve<T>(XenRef<T> xenRef) where T : XenObject<T>
{
if (xenRef == null)
return null;
ChangeableDictionary<XenRef<T>, T> d = (ChangeableDictionary<XenRef<T>, T>)GetCollectionForType(typeof(T));
T result;
return d.TryGetValue(xenRef, out result) ? result : null;
}
private void Clear_<T>(ChangeableDictionary<XenRef<T>, T> o) where T : XenObject<T>
{
// explicitly remove each element so change events are fired
XenRef<T>[] keys = new XenRef<T>[o.Keys.Count];
o.Keys.CopyTo(keys, 0);
foreach (XenRef<T> key in keys)
{
lock (o)
{
o.Remove(key);
}
}
}
private void UpdateFrom_<T>(Network.IXenConnection connection, ChangeableDictionary<XenRef<T>, T> target, ObjectChange source) where T : XenObject<T>, new()
{
XenRef<T> xenref = source.xenref as XenRef<T>;
if (xenref == null)
{
xenref = new XenRef<T>((string)source.xenref);
}
if (source.value != null)
{
T to_update = null;
lock (target)
{
if (!target.TryGetValue(xenref, out to_update))
{
// add
T obj = new T();
obj.Connection = connection;
obj.UpdateFrom((T)source.value);
obj.opaque_ref = xenref.opaque_ref;
target.Add(xenref, obj);
}
}
// Update the object that we found above. Note that this needs to be done out of the
// scope of the lock(target), as UpdateFrom is going to fire events.
if (to_update != null)
to_update.UpdateFrom((T)source.value);
}
else
{
// delete the source object from our model
lock (target)
{
target.Remove(xenref);
}
}
}
private Type APIType(IDictionary d)
{
return d.GetType().GetGenericArguments()[1];
}
private bool foldersChanged = false;
public void AddFolder(XenRef<Folder> path, Folder folder)
{
_folders[path] = folder;
foldersChanged = true;
}
public void RemoveFolder(XenRef<Folder> path)
{
lock (_folders)
{
_folders.Remove(path);
}
foldersChanged = true;
}
public void CheckFoldersBatchChange()
{
if (foldersChanged)
{
foldersChanged = false;
_folders.OnBatchCollectionChanged();
}
}
public void CheckDockerContainersBatchChange()
{
if (dockerContainersChanged)
{
dockerContainersChanged = false;
_dockerContainers.OnBatchCollectionChanged();
}
}
private bool dockerContainersChanged = false;
public void UpdateDockerContainersForVM(IList<DockerContainer> containers, VM vm)
{
Trace.Assert(vm != null);
//updating existing, adding new containers
dockerContainersChanged = dockerContainersChanged || containers.Count > 0;
foreach (var c in containers)
{
_dockerContainers[new XenRef<DockerContainer>(c)] = c;
}
List<KeyValuePair<XenRef<DockerContainer>, DockerContainer>> containersGoneFromThisVM = null;
//removing the ones that are not there anymore on this VM
lock (_dockerContainers)
{
containersGoneFromThisVM = _dockerContainers.Where(c => c.Value != null && c.Value.Parent.uuid == vm.uuid && !containers.Any(cont => cont.uuid == c.Value.uuid)).ToList();
dockerContainersChanged = dockerContainersChanged || containersGoneFromThisVM.Count > 0;
foreach (var c in containersGoneFromThisVM)
{
_dockerContainers.Remove(new XenRef<DockerContainer>(c.Value));
}
}
}
public IEnumerable<IXenObject> XenSearchableObjects
{
get
{
foreach (IXenObject o in VMs)
yield return o;
foreach (IXenObject o in VM_appliances)
yield return o;
foreach (IXenObject o in Hosts)
yield return o;
foreach (IXenObject o in SRs)
yield return o;
foreach (IXenObject o in Networks)
yield return o;
foreach (IXenObject o in VDIs)
yield return o;
foreach (IXenObject o in Folders)
yield return o;
foreach (IXenObject o in DockerContainers)
yield return o;
foreach (Pool pool in Pools)
{
if (pool!=null&&pool.IsVisible)
{
yield return pool;
break;
}
}
}
}
}
}
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