310 lines
10 KiB
C#
310 lines
10 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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namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
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{
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[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "LocalAssetServicesConnector")]
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public class LocalAssetServicesConnector : ISharedRegionModule, IAssetService
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private IImprovedAssetCache m_Cache = null;
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private IAssetService m_AssetService;
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private bool m_Enabled = false;
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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 "LocalAssetServicesConnector"; }
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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("[LOCAL ASSET SERVICES CONNECTOR]: AssetService missing from OpenSim.ini");
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return;
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}
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string serviceDll = assetConfig.GetString("LocalServiceModule", String.Empty);
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if (serviceDll == String.Empty)
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{
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m_log.Error("[LOCAL ASSET SERVICES CONNECTOR]: No LocalServiceModule named in section AssetService");
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return;
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}
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else
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{
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m_log.DebugFormat("[LOCAL ASSET SERVICES CONNECTOR]: Loading asset service at {0}", serviceDll);
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}
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Object[] args = new Object[] { source };
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m_AssetService = ServerUtils.LoadPlugin<IAssetService>(serviceDll, args);
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if (m_AssetService == null)
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{
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m_log.Error("[LOCAL ASSET SERVICES CONNECTOR]: Can't load asset service");
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return;
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}
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m_Enabled = true;
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m_log.Info("[LOCAL ASSET SERVICES CONNECTOR]: Local asset connector 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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scene.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.DebugFormat(
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"[LOCAL ASSET SERVICES CONNECTOR]: Enabled connector for region {0}", scene.RegionInfo.RegionName);
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if (m_Cache != null)
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{
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m_log.DebugFormat(
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"[LOCAL ASSET SERVICES CONNECTOR]: Enabled asset caching for region {0}",
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scene.RegionInfo.RegionName);
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}
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else
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{
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// Short-circuit directly to storage layer. This ends up storing temporary and local assets.
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//
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scene.UnregisterModuleInterface<IAssetService>(this);
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scene.RegisterModuleInterface<IAssetService>(m_AssetService);
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}
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}
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public AssetBase Get(string id)
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{
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// m_log.DebugFormat("[LOCAL ASSET SERVICES CONNECTOR]: Synchronously requesting asset {0}", id);
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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 = m_AssetService.Get(id);
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if ((m_Cache != null) && (asset != null))
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m_Cache.Cache(asset);
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// if (null == asset)
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// m_log.WarnFormat("[LOCAL ASSET SERVICES CONNECTOR]: Could not synchronously find asset with id {0}", id);
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}
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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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// m_log.DebugFormat("[LOCAL ASSET SERVICES CONNECTOR]: Cache request for {0}", id);
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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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asset = m_Cache.Get(id);
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if (asset != null)
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return asset.Metadata;
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asset = m_AssetService.Get(id);
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if (asset != null)
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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.Metadata;
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}
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return null;
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}
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public byte[] GetData(string id)
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{
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// m_log.DebugFormat("[LOCAL ASSET SERVICES CONNECTOR]: Requesting data for asset {0}", id);
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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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return asset.Data;
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asset = m_AssetService.Get(id);
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if (asset != null)
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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.Data;
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}
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return null;
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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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// m_log.DebugFormat("[LOCAL ASSET SERVICES CONNECTOR]: Asynchronously requesting asset {0}", id);
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if (m_Cache != null)
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{
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AssetBase asset = m_Cache.Get(id);
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if (asset != null)
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{
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Util.FireAndForget(
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o => handler(id, sender, asset), null, "LocalAssetServiceConnector.GotFromCacheCallback");
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return true;
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}
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}
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return m_AssetService.Get(id, sender, delegate (string assetID, Object s, AssetBase a)
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{
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if ((a != null) && (m_Cache != null))
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m_Cache.Cache(a);
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// if (null == a)
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// m_log.WarnFormat("[LOCAL ASSET SERVICES CONNECTOR]: Could not asynchronously find asset with id {0}", id);
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Util.FireAndForget(
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o => handler(assetID, s, a), null, "LocalAssetServiceConnector.GotFromServiceCallback");
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});
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}
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public bool[] AssetsExist(string[] ids)
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{
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return m_AssetService.AssetsExist(ids);
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}
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public string Store(AssetBase asset)
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{
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if (m_Cache != null)
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m_Cache.Cache(asset);
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if (asset.Local)
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{
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// m_log.DebugFormat(
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// "[LOCAL ASSET SERVICE CONNECTOR]: Returning asset {0} {1} without querying database since status Temporary = {2}, Local = {3}",
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// asset.Name, asset.ID, asset.Temporary, asset.Local);
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return asset.ID;
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}
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else
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{
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// m_log.DebugFormat(
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// "[LOCAL ASSET SERVICE CONNECTOR]: Passing {0} {1} on to asset service for storage, status Temporary = {2}, Local = {3}",
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// asset.Name, asset.ID, asset.Temporary, asset.Local);
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return m_AssetService.Store(asset);
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}
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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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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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if (m_Cache != null)
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m_Cache.Cache(asset);
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}
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return m_AssetService.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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return m_AssetService.Delete(id);
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}
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}
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}
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