416 lines
13 KiB
C#
416 lines
13 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using log4net;
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using Mono.Addins;
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using Nini.Config;
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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using OpenSim.Framework;
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using OpenSim.Server.Base;
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using OpenSim.Region.Framework.Interfaces;
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using OpenSim.Region.Framework.Scenes;
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using OpenSim.Services.Interfaces;
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using OpenMetaverse;
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namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
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{
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[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "HGAssetBroker")]
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public class HGAssetBroker : ISharedRegionModule, IAssetService
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{
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private static readonly ILog m_log =
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LogManager.GetLogger(
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MethodBase.GetCurrentMethod().DeclaringType);
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private IImprovedAssetCache m_Cache = null;
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private IAssetService m_GridService;
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private IAssetService m_HGService;
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private Scene m_aScene;
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private string m_LocalAssetServiceURI;
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private bool m_Enabled = false;
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private AssetPermissions m_AssetPerms;
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public Type ReplaceableInterface
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{
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get { return null; }
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}
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public string Name
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{
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get { return "HGAssetBroker"; }
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}
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public HGAssetBroker() {}
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public HGAssetBroker(IConfigSource config)
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{
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Initialise(config);
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}
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public void Initialise(IConfigSource source)
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{
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IConfig moduleConfig = source.Configs["Modules"];
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if (moduleConfig != null)
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{
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string name = moduleConfig.GetString("AssetServices", "");
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if (name == Name)
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{
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IConfig assetConfig = source.Configs["AssetService"];
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if (assetConfig == null)
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{
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m_log.Error("[HG ASSET CONNECTOR]: AssetService missing from OpenSim.ini");
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return;
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}
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string localDll = assetConfig.GetString("LocalGridAssetService",
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String.Empty);
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string HGDll = assetConfig.GetString("HypergridAssetService",
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String.Empty);
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if (localDll == String.Empty)
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{
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m_log.Error("[HG ASSET CONNECTOR]: No LocalGridAssetService named in section AssetService");
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return;
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}
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if (HGDll == String.Empty)
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{
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m_log.Error("[HG ASSET CONNECTOR]: No HypergridAssetService named in section AssetService");
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return;
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}
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Object[] args = new Object[] { source };
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m_GridService =
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ServerUtils.LoadPlugin<IAssetService>(localDll,
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args);
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m_HGService =
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ServerUtils.LoadPlugin<IAssetService>(HGDll,
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args);
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if (m_GridService == null)
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{
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m_log.Error("[HG ASSET CONNECTOR]: Can't load local asset service");
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return;
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}
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if (m_HGService == null)
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{
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m_log.Error("[HG ASSET CONNECTOR]: Can't load hypergrid asset service");
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return;
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}
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m_LocalAssetServiceURI = assetConfig.GetString("AssetServerURI", string.Empty);
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if (m_LocalAssetServiceURI == string.Empty)
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{
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IConfig netConfig = source.Configs["Network"];
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m_LocalAssetServiceURI = netConfig.GetString("asset_server_url", string.Empty);
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}
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if (m_LocalAssetServiceURI != string.Empty)
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m_LocalAssetServiceURI = m_LocalAssetServiceURI.Trim('/');
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IConfig hgConfig = source.Configs["HGAssetService"];
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m_AssetPerms = new AssetPermissions(hgConfig); // it's ok if arg is null
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m_Enabled = true;
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m_log.Info("[HG ASSET CONNECTOR]: HG asset broker enabled");
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}
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}
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}
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public void PostInitialise()
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{
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}
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public void Close()
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{
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}
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public void AddRegion(Scene scene)
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{
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if (!m_Enabled)
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return;
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m_aScene = scene;
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m_aScene.RegisterModuleInterface<IAssetService>(this);
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}
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public void RemoveRegion(Scene scene)
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{
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}
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public void RegionLoaded(Scene scene)
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{
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if (!m_Enabled)
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return;
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if (m_Cache == null)
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{
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m_Cache = scene.RequestModuleInterface<IImprovedAssetCache>();
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if (!(m_Cache is ISharedRegionModule))
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m_Cache = null;
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}
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m_log.InfoFormat("[HG ASSET CONNECTOR]: Enabled hypergrid asset broker for region {0}", scene.RegionInfo.RegionName);
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if (m_Cache != null)
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{
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m_log.InfoFormat("[HG ASSET CONNECTOR]: Enabled asset caching for region {0}", scene.RegionInfo.RegionName);
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}
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}
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private bool IsHG(string id)
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{
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Uri assetUri;
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if (Uri.TryCreate(id, UriKind.Absolute, out assetUri) &&
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assetUri.Scheme == Uri.UriSchemeHttp)
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return true;
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return false;
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}
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public AssetBase Get(string id)
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{
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//m_log.DebugFormat("[HG ASSET CONNECTOR]: Get {0}", id);
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AssetBase asset = null;
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if (m_Cache != null)
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{
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asset = m_Cache.Get(id);
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if (asset != null)
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return asset;
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}
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if (IsHG(id))
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{
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asset = m_HGService.Get(id);
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if (asset != null)
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{
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// Now store it locally, if allowed
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if (m_AssetPerms.AllowedImport(asset.Type))
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m_GridService.Store(asset);
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else
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return null;
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}
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}
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else
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asset = m_GridService.Get(id);
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if (m_Cache != null)
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m_Cache.Cache(asset);
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return asset;
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}
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public AssetBase GetCached(string id)
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{
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if (m_Cache != null)
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return m_Cache.Get(id);
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return null;
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}
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public AssetMetadata GetMetadata(string id)
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{
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AssetBase asset = null;
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if (m_Cache != null)
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{
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if (m_Cache != null)
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m_Cache.Get(id);
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if (asset != null)
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return asset.Metadata;
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}
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AssetMetadata metadata;
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if (IsHG(id))
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metadata = m_HGService.GetMetadata(id);
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else
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metadata = m_GridService.GetMetadata(id);
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return metadata;
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}
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public byte[] GetData(string id)
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{
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AssetBase asset = null;
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if (m_Cache != null)
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{
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if (m_Cache != null)
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m_Cache.Get(id);
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if (asset != null)
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return asset.Data;
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}
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if (IsHG(id))
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return m_HGService.GetData(id);
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else
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return m_GridService.GetData(id);
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}
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public bool Get(string id, Object sender, AssetRetrieved handler)
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{
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AssetBase asset = null;
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if (m_Cache != null)
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asset = m_Cache.Get(id);
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if (asset != null)
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{
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Util.FireAndForget(delegate { handler(id, sender, asset); }, null, "HGAssetBroker.GotFromCache");
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return true;
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}
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if (IsHG(id))
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{
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return m_HGService.Get(id, sender, delegate (string assetID, Object s, AssetBase a)
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{
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if (m_Cache != null)
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m_Cache.Cache(a);
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handler(assetID, s, a);
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});
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}
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else
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{
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return m_GridService.Get(id, sender, delegate (string assetID, Object s, AssetBase a)
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{
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if (m_Cache != null)
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m_Cache.Cache(a);
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handler(assetID, s, a);
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});
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}
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}
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public virtual bool[] AssetsExist(string[] ids)
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{
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int numHG = 0;
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foreach (string id in ids)
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{
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if (IsHG(id))
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++numHG;
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}
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if (numHG == 0)
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return m_GridService.AssetsExist(ids);
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else if (numHG == ids.Length)
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return m_HGService.AssetsExist(ids);
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else
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throw new Exception("[HG ASSET CONNECTOR]: AssetsExist: all the assets must be either local or foreign");
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}
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public string Store(AssetBase asset)
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{
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bool isHG = IsHG(asset.ID);
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if ((m_Cache != null) && !isHG)
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// Don't store it in the cache if the asset is to
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// be sent to the other grid, because this is already
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// a copy of the local asset.
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m_Cache.Cache(asset);
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if (asset.Local)
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{
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if (m_Cache != null)
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m_Cache.Cache(asset);
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return asset.ID;
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}
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string id;
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if (IsHG(asset.ID))
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{
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if (m_AssetPerms.AllowedExport(asset.Type))
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id = m_HGService.Store(asset);
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else
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return String.Empty;
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}
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else
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id = m_GridService.Store(asset);
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if (String.IsNullOrEmpty(id))
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return string.Empty;
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asset.ID = id;
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if (m_Cache != null)
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m_Cache.Cache(asset);
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return id;
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}
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public bool UpdateContent(string id, byte[] data)
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{
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AssetBase asset = null;
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if (m_Cache != null)
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asset = m_Cache.Get(id);
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if (asset != null)
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{
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asset.Data = data;
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m_Cache.Cache(asset);
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}
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if (IsHG(id))
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return m_HGService.UpdateContent(id, data);
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else
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return m_GridService.UpdateContent(id, data);
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}
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public bool Delete(string id)
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{
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if (m_Cache != null)
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m_Cache.Expire(id);
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bool result = false;
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if (IsHG(id))
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result = m_HGService.Delete(id);
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else
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result = m_GridService.Delete(id);
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if (result && m_Cache != null)
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m_Cache.Expire(id);
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return result;
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}
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}
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}
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