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* Implement asynchronous assets request for archiving 

* No user functionality yet
0.6.0-stable
Justin Clarke Casey 2008-05-27 14:21:32 +00:00
parent 2cea74181a
commit 64821ac0a1
1 changed files with 187 additions and 116 deletions
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303
OpenSim/Region/Environment/Modules/World/Archiver/ArchiveRequest.cs
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@ -1,116 +1,187 @@
/* /*
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* See CONTRIBUTORS.TXT for a full list of copyright holders. * See CONTRIBUTORS.TXT for a full list of copyright holders.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: * modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright * * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
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* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the * * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products * names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission. * derived from this software without specific prior written permission.
* *
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ */
using OpenSim.Framework.Communications.Cache; using OpenSim.Framework;
using OpenSim.Region.Environment.Interfaces; using OpenSim.Framework.Communications.Cache;
using OpenSim.Region.Environment.Modules.World.Serialiser; using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Scenes; using OpenSim.Region.Environment.Modules.World.Serialiser;
using System.Collections.Generic; using OpenSim.Region.Environment.Scenes;
using System.Reflection; using System.Collections.Generic;
using libsecondlife; using System.Reflection;
using log4net; using libsecondlife;
using Nini.Config; using log4net;
using Nini.Config;
namespace OpenSim.Region.Environment
{ namespace OpenSim.Region.Environment
/// <summary> {
/// Handles an individual archive request /// <summary>
/// </summary> /// Method called when all the necessary assets for an archive request have been received.
public class ArchiveRequest /// </summary>
{ public delegate void AssetsRequestCallback(IDictionary<LLUUID, AssetBase> assets);
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
/// <summary>
private Scene m_scene; /// Handles an individual archive request
private string m_savePath; /// </summary>
public class ArchiveRequest
public ArchiveRequest(Scene scene, string savePath) {
{ private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
m_scene = scene;
m_savePath = savePath; private Scene m_scene;
private string m_savePath;
ArchiveRegion();
} public ArchiveRequest(Scene scene, string savePath)
{
protected void ArchiveRegion() m_scene = scene;
{ m_savePath = savePath;
m_log.Warn("[ARCHIVER]: Archive region not yet implemented");
ArchiveRegion();
Dictionary<LLUUID, int> textureUuids = new Dictionary<LLUUID, int>(); }
List<EntityBase> entities = m_scene.GetEntities(); protected void ArchiveRegion()
{
foreach (EntityBase entity in entities) m_log.Warn("[ARCHIVER]: Archive region not yet implemented");
{
if (entity is SceneObjectGroup) Dictionary<LLUUID, int> textureUuids = new Dictionary<LLUUID, int>();
{
SceneObjectGroup sceneObject = (SceneObjectGroup)entity; List<EntityBase> entities = m_scene.GetEntities();
foreach (SceneObjectPart part in sceneObject.GetParts()) foreach (EntityBase entity in entities)
{ {
LLUUID texture = new LLUUID(part.Shape.TextureEntry, 0); if (entity is SceneObjectGroup)
textureUuids[texture] = 1; {
} SceneObjectGroup sceneObject = (SceneObjectGroup)entity;
}
} foreach (SceneObjectPart part in sceneObject.GetParts())
{
string serEntities = SerializeObjects(entities); LLUUID texture = new LLUUID(part.Shape.TextureEntry, 0);
textureUuids[texture] = 1;
if (serEntities != null && serEntities.Length > 0) }
{ }
m_log.DebugFormat("[ARCHIVER]: Successfully got serialization for {0} entities", entities.Count); }
m_log.DebugFormat("[ARCHIVER]: Requiring save of {0} textures", textureUuids.Count);
} string serEntities = SerializeObjects(entities);
}
if (serEntities != null && serEntities.Length > 0)
/// <summary> {
/// Get an xml representation of the given scene objects. m_log.DebugFormat("[ARCHIVER]: Successfully got serialization for {0} entities", entities.Count);
/// </summary> m_log.DebugFormat("[ARCHIVER]: Requiring save of {0} textures", textureUuids.Count);
/// <param name="scene"></param>
/// <returns></returns> // Asynchronously request all the assets required to perform this archive operation
protected static string SerializeObjects(List<EntityBase> entities) new AssetsRequest(ReceivedAllAssets, m_scene.AssetCache, textureUuids.Keys);
{ }
string serialization = "<scene>"; }
List<string> serObjects = new List<string>(); protected internal void ReceivedAllAssets(IDictionary<LLUUID, AssetBase> assets)
{
foreach (EntityBase ent in entities) m_log.DebugFormat("[ARCHIVER]: Received all {0} textures required", assets.Count);
{ }
if (ent is SceneObjectGroup)
{ /// <summary>
serObjects.Add(((SceneObjectGroup) ent).ToXmlString2()); /// Get an xml representation of the given scene objects.
} /// </summary>
} /// <param name="scene"></param>
/// <returns></returns>
foreach (string serObject in serObjects) protected static string SerializeObjects(List<EntityBase> entities)
serialization += serObject; {
string serialization = "<scene>";
serialization += "</scene>";
List<string> serObjects = new List<string>();
return serialization;
} foreach (EntityBase ent in entities)
} {
} if (ent is SceneObjectGroup)
{
serObjects.Add(((SceneObjectGroup) ent).ToXmlString2());
}
}
foreach (string serObject in serObjects)
serialization += serObject;
serialization += "</scene>";
return serialization;
}
}
/// <summary>
/// Encapsulate the asynchronous requests for the assets required for an archive operation
/// </summary>
class AssetsRequest
{
/// <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<LLUUID, AssetBase> m_assets = new Dictionary<LLUUID, AssetBase>();
/// <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(AssetsRequestCallback assetsRequestCallback, AssetCache assetCache, ICollection<LLUUID> uuids)
{
m_assetsRequestCallback = assetsRequestCallback;
m_assetCache = assetCache;
m_repliesRequired = uuids.Count;
// We can stop here if there are no assets to fetch
if (m_repliesRequired == 0)
m_assetsRequestCallback(m_assets);
foreach (LLUUID uuid in 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(LLUUID assetID, AssetBase asset)
{
m_assets[assetID] = asset;
if (m_assets.Count == m_repliesRequired)
{
m_assetsRequestCallback(m_assets);
}
}
}
}