clockwerk-opensim-stable – Rev 1
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/*
* 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 OpenSimulator 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 log4net;
using Mono.Addins;
using Nini.Config;
using System;
using System.Collections.Generic;
using System.Reflection;
using OpenSim.Framework;
using OpenSim.Server.Base;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Services.Interfaces;
using OpenMetaverse;
namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
{
[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "HGAssetBroker")]
public class HGAssetBroker : ISharedRegionModule, IAssetService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
private IImprovedAssetCache m_Cache = null;
private IAssetService m_GridService;
private IAssetService m_HGService;
private Scene m_aScene;
private string m_LocalAssetServiceURI;
private bool m_Enabled = false;
private AssetPermissions m_AssetPerms;
public Type ReplaceableInterface
{
get { return null; }
}
public string Name
{
get { return "HGAssetBroker"; }
}
public void Initialise(IConfigSource source)
{
IConfig moduleConfig = source.Configs["Modules"];
if (moduleConfig != null)
{
string name = moduleConfig.GetString("AssetServices", "");
if (name == Name)
{
IConfig assetConfig = source.Configs["AssetService"];
if (assetConfig == null)
{
m_log.Error("[HG ASSET CONNECTOR]: AssetService missing from OpenSim.ini");
return;
}
string localDll = assetConfig.GetString("LocalGridAssetService",
String.Empty);
string HGDll = assetConfig.GetString("HypergridAssetService",
String.Empty);
if (localDll == String.Empty)
{
m_log.Error("[HG ASSET CONNECTOR]: No LocalGridAssetService named in section AssetService");
return;
}
if (HGDll == String.Empty)
{
m_log.Error("[HG ASSET CONNECTOR]: No HypergridAssetService named in section AssetService");
return;
}
Object[] args = new Object[] { source };
m_GridService =
ServerUtils.LoadPlugin<IAssetService>(localDll,
args);
m_HGService =
ServerUtils.LoadPlugin<IAssetService>(HGDll,
args);
if (m_GridService == null)
{
m_log.Error("[HG ASSET CONNECTOR]: Can't load local asset service");
return;
}
if (m_HGService == null)
{
m_log.Error("[HG ASSET CONNECTOR]: Can't load hypergrid asset service");
return;
}
m_LocalAssetServiceURI = assetConfig.GetString("AssetServerURI", string.Empty);
if (m_LocalAssetServiceURI == string.Empty)
{
IConfig netConfig = source.Configs["Network"];
m_LocalAssetServiceURI = netConfig.GetString("asset_server_url", string.Empty);
}
if (m_LocalAssetServiceURI != string.Empty)
m_LocalAssetServiceURI = m_LocalAssetServiceURI.Trim('/');
IConfig hgConfig = source.Configs["HGAssetService"];
m_AssetPerms = new AssetPermissions(hgConfig); // it's ok if arg is null
m_Enabled = true;
m_log.Info("[HG ASSET CONNECTOR]: HG asset broker enabled");
}
}
}
public void PostInitialise()
{
}
public void Close()
{
}
public void AddRegion(Scene scene)
{
if (!m_Enabled)
return;
m_aScene = scene;
m_aScene.RegisterModuleInterface<IAssetService>(this);
}
public void RemoveRegion(Scene scene)
{
}
public void RegionLoaded(Scene scene)
{
if (!m_Enabled)
return;
if (m_Cache == null)
{
m_Cache = scene.RequestModuleInterface<IImprovedAssetCache>();
if (!(m_Cache is ISharedRegionModule))
m_Cache = null;
}
m_log.InfoFormat("[HG ASSET CONNECTOR]: Enabled hypergrid asset broker for region {0}", scene.RegionInfo.RegionName);
if (m_Cache != null)
{
m_log.InfoFormat("[HG ASSET CONNECTOR]: Enabled asset caching for region {0}", scene.RegionInfo.RegionName);
}
}
private bool IsHG(string id)
{
Uri assetUri;
if (Uri.TryCreate(id, UriKind.Absolute, out assetUri) &&
assetUri.Scheme == Uri.UriSchemeHttp)
return true;
return false;
}
public AssetBase Get(string id)
{
//m_log.DebugFormat("[HG ASSET CONNECTOR]: Get {0}", id);
AssetBase asset = null;
if (m_Cache != null)
{
asset = m_Cache.Get(id);
if (asset != null)
return asset;
}
if (IsHG(id))
{
asset = m_HGService.Get(id);
if (asset != null)
{
// Now store it locally, if allowed
if (m_AssetPerms.AllowedImport(asset.Type))
m_GridService.Store(asset);
else
return null;
}
}
else
asset = m_GridService.Get(id);
if (m_Cache != null)
m_Cache.Cache(asset);
return asset;
}
public AssetBase GetCached(string id)
{
if (m_Cache != null)
return m_Cache.Get(id);
return null;
}
public AssetMetadata GetMetadata(string id)
{
AssetBase asset = null;
if (m_Cache != null)
{
if (m_Cache != null)
m_Cache.Get(id);
if (asset != null)
return asset.Metadata;
}
AssetMetadata metadata;
if (IsHG(id))
metadata = m_HGService.GetMetadata(id);
else
metadata = m_GridService.GetMetadata(id);
return metadata;
}
public byte[] GetData(string id)
{
AssetBase asset = null;
if (m_Cache != null)
{
if (m_Cache != null)
m_Cache.Get(id);
if (asset != null)
return asset.Data;
}
if (IsHG(id))
return m_HGService.GetData(id);
else
return m_GridService.GetData(id);
}
public bool Get(string id, Object sender, AssetRetrieved handler)
{
AssetBase asset = null;
if (m_Cache != null)
asset = m_Cache.Get(id);
if (asset != null)
{
Util.FireAndForget(delegate { handler(id, sender, asset); });
return true;
}
if (IsHG(id))
{
return m_HGService.Get(id, sender, delegate (string assetID, Object s, AssetBase a)
{
if (m_Cache != null)
m_Cache.Cache(a);
handler(assetID, s, a);
});
}
else
{
return m_GridService.Get(id, sender, delegate (string assetID, Object s, AssetBase a)
{
if (m_Cache != null)
m_Cache.Cache(a);
handler(assetID, s, a);
});
}
}
public string Store(AssetBase asset)
{
bool isHG = IsHG(asset.ID);
if ((m_Cache != null) && !isHG)
// Don't store it in the cache if the asset is to
// be sent to the other grid, because this is already
// a copy of the local asset.
m_Cache.Cache(asset);
if (asset.Local)
{
if (m_Cache != null)
m_Cache.Cache(asset);
return asset.ID;
}
string id = string.Empty;
if (IsHG(asset.ID))
{
if (m_AssetPerms.AllowedExport(asset.Type))
id = m_HGService.Store(asset);
else
return String.Empty;
}
else
id = m_GridService.Store(asset);
if (id != String.Empty)
{
// Placing this here, so that this work with old asset servers that don't send any reply back
// SynchronousRestObjectRequester returns somethins that is not an empty string
if (id != null)
asset.ID = id;
if (m_Cache != null)
m_Cache.Cache(asset);
}
return id;
}
public bool UpdateContent(string id, byte[] data)
{
AssetBase asset = null;
if (m_Cache != null)
asset = m_Cache.Get(id);
if (asset != null)
{
asset.Data = data;
m_Cache.Cache(asset);
}
if (IsHG(id))
return m_HGService.UpdateContent(id, data);
else
return m_GridService.UpdateContent(id, data);
}
public bool Delete(string id)
{
if (m_Cache != null)
m_Cache.Expire(id);
bool result = false;
if (IsHG(id))
result = m_HGService.Delete(id);
else
result = m_GridService.Delete(id);
if (result && m_Cache != null)
m_Cache.Expire(id);
return result;
}
}
}