1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 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.Generic;
using System.Reflection;
using System.Threading;
using OpenMetaverse;
using log4net;
using OpenSim.Framework;
using OpenSim.Framework.Communications.Cache;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
namespace OpenSim.Region.Environment.Modules.World.Archiver
{
/// <summary>
/// Encapsulate the asynchronous requests for the assets required for an archive operation
/// </summary>
class AssetsRequest
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
/// <summary>
/// uuids to request
/// </summary>
protected ICollection<UUID> m_uuids;
/// <summary>
/// Callback used when all the assets requested have been received.
/// </summary>
protected AssetsRequestCallback m_assetsRequestCallback;
/// <summary>
/// Assets retrieved in this request
/// </summary>
protected Dictionary<UUID, AssetBase> m_assets = new Dictionary<UUID, AssetBase>();
/// <summary>
/// Maintain a list of assets that could not be found. This will be passed back to the requester.
/// </summary>
protected List<UUID> m_notFoundAssetUuids = new List<UUID>();
/// <summary>
/// Record the number of asset replies required so we know when we've finished
/// </summary>
private int m_repliesRequired;
/// <summary>
/// Asset cache used to request the assets
/// </summary>
protected AssetCache m_assetCache;
protected internal AssetsRequest(ICollection<UUID> uuids, AssetCache assetCache, AssetsRequestCallback assetsRequestCallback)
{
m_uuids = uuids;
m_assetsRequestCallback = assetsRequestCallback;
m_assetCache = assetCache;
m_repliesRequired = uuids.Count;
}
protected internal void Execute()
{
// We can stop here if there are no assets to fetch
if (m_repliesRequired == 0)
m_assetsRequestCallback(m_assets, m_notFoundAssetUuids);
foreach (UUID uuid in m_uuids)
{
m_assetCache.GetAsset(uuid, AssetRequestCallback, true);
}
}
/// <summary>
/// Called back by the asset cache when it has the asset
/// </summary>
/// <param name="assetID"></param>
/// <param name="asset"></param>
public void AssetRequestCallback(UUID assetID, AssetBase asset)
{
if (asset != null)
m_assets[assetID] = asset;
else
m_notFoundAssetUuids.Add(assetID);
//m_log.DebugFormat(
// "[ARCHIVER]: Received {0} assets and notification of {1} missing assets", m_assets.Count, m_notFoundAssetUuids.Count);
if (m_assets.Count + m_notFoundAssetUuids.Count == m_repliesRequired)
{
// We want to stop using the asset cache thread asap as we now need to do the actual work of producing the archive
Thread newThread = new Thread(PerformAssetsRequestCallback);
newThread.Name = "OpenSimulator archiving thread post assets receipt";
newThread.Start();
}
}
/// <summary>
/// Perform the callback on the original requester of the assets
/// </summary>
protected void PerformAssetsRequestCallback()
{
try
{
m_assetsRequestCallback(m_assets, m_notFoundAssetUuids);
}
catch (Exception e)
{
m_log.ErrorFormat(
"[ARCHIVER]: Terminating archive creation since asset requster callback failed with {0}", e);
}
}
}
}
|
