411 lines
15 KiB
C#
411 lines
15 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 System;
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using System.Collections.Generic;
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using System.IO;
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using System.Net;
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using System.Reflection;
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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 OpenSim.Framework;
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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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using OpenMetaverse.StructuredData;
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namespace OpenSim.Services.Connectors.SimianGrid
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{
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/// <summary>
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/// Connects to the SimianGrid asset service
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/// </summary>
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[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
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public class SimianAssetServiceConnector : IAssetService, ISharedRegionModule
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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 static string ZeroID = UUID.Zero.ToString();
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private string m_serverUrl = String.Empty;
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private IImprovedAssetCache m_cache;
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#region ISharedRegionModule
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public Type ReplaceableInterface { get { return null; } }
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public void RegionLoaded(Scene scene)
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{
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if (m_cache == null)
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{
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IImprovedAssetCache cache = scene.RequestModuleInterface<IImprovedAssetCache>();
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if (cache is ISharedRegionModule)
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m_cache = cache;
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}
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}
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public void PostInitialise() { }
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public void Close() { }
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public SimianAssetServiceConnector() { }
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public string Name { get { return "SimianAssetServiceConnector"; } }
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public void AddRegion(Scene scene) { if (!String.IsNullOrEmpty(m_serverUrl)) { scene.RegisterModuleInterface<IAssetService>(this); } }
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public void RemoveRegion(Scene scene) { if (!String.IsNullOrEmpty(m_serverUrl)) { scene.UnregisterModuleInterface<IAssetService>(this); } }
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#endregion ISharedRegionModule
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public SimianAssetServiceConnector(IConfigSource source)
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{
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Initialise(source);
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}
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public void Initialise(IConfigSource source)
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{
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if (Simian.IsSimianEnabled(source, "AssetServices"))
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{
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IConfig gridConfig = source.Configs["AssetService"];
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if (gridConfig == null)
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{
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m_log.Error("[ASSET CONNECTOR]: AssetService missing from OpenSim.ini");
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throw new Exception("Asset connector init error");
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}
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string serviceUrl = gridConfig.GetString("AssetServerURI");
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if (String.IsNullOrEmpty(serviceUrl))
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{
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m_log.Error("[ASSET CONNECTOR]: No AssetServerURI in section AssetService");
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throw new Exception("Asset connector init error");
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}
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if (!serviceUrl.EndsWith("/") && !serviceUrl.EndsWith("="))
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serviceUrl = serviceUrl + '/';
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m_serverUrl = serviceUrl;
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}
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}
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#region IAssetService
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public AssetBase Get(string id)
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{
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AssetBase asset = null;
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// Cache fetch
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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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Uri url;
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// Determine if id is an absolute URL or a grid-relative UUID
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if (!Uri.TryCreate(id, UriKind.Absolute, out url))
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url = new Uri(m_serverUrl + id);
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try
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{
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HttpWebRequest request = UntrustedHttpWebRequest.Create(url);
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using (WebResponse response = request.GetResponse())
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{
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using (Stream responseStream = response.GetResponseStream())
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{
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string creatorID = response.Headers.GetOne("X-Asset-Creator-Id") ?? String.Empty;
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// Create the asset object
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asset = new AssetBase(id, String.Empty, SLUtil.ContentTypeToSLAssetType(response.ContentType), creatorID);
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UUID assetID;
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if (UUID.TryParse(id, out assetID))
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asset.FullID = assetID;
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// Grab the asset data from the response stream
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using (MemoryStream stream = new MemoryStream())
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{
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responseStream.CopyTo(stream, Int32.MaxValue);
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asset.Data = stream.ToArray();
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}
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}
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}
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// Cache store
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if (m_cache != null && asset != null)
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m_cache.Cache(asset);
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return asset;
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}
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catch (Exception ex)
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{
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m_log.Warn("[ASSET CONNECTOR]: Asset GET from " + url + " failed: " + ex.Message);
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return null;
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}
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}
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/// <summary>
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/// Get an asset's metadata
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/// </summary>
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/// <param name="id"></param>
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/// <returns></returns>
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public AssetMetadata GetMetadata(string id)
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{
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AssetMetadata metadata = null;
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// Cache fetch
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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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return asset.Metadata;
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}
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Uri url;
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// Determine if id is an absolute URL or a grid-relative UUID
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if (!Uri.TryCreate(id, UriKind.Absolute, out url))
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url = new Uri(m_serverUrl + id);
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try
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{
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HttpWebRequest request = UntrustedHttpWebRequest.Create(url);
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request.Method = "HEAD";
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using (WebResponse response = request.GetResponse())
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{
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using (Stream responseStream = response.GetResponseStream())
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{
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// Create the metadata object
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metadata = new AssetMetadata();
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metadata.ContentType = response.ContentType;
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metadata.ID = id;
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UUID uuid;
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if (UUID.TryParse(id, out uuid))
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metadata.FullID = uuid;
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string lastModifiedStr = response.Headers.Get("Last-Modified");
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if (!String.IsNullOrEmpty(lastModifiedStr))
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{
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DateTime lastModified;
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if (DateTime.TryParse(lastModifiedStr, out lastModified))
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metadata.CreationDate = lastModified;
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}
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}
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}
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}
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catch (Exception ex)
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{
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m_log.Warn("[ASSET CONNECTOR]: Asset GET from " + url + " failed: " + ex.Message);
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}
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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 = Get(id);
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if (asset != null)
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return asset.Data;
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return null;
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}
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/// <summary>
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/// Get an asset asynchronously
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/// </summary>
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/// <param name="id">The asset id</param>
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/// <param name="sender">Represents the requester. Passed back via the handler</param>
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/// <param name="handler">The handler to call back once the asset has been retrieved</param>
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/// <returns>True if the id was parseable, false otherwise</returns>
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public bool Get(string id, Object sender, AssetRetrieved handler)
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{
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Util.FireAndForget(
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delegate(object o)
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{
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AssetBase asset = Get(id);
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handler(id, sender, asset);
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}
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);
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return true;
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}
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/// <summary>
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/// Creates a new asset
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/// </summary>
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/// Returns a random ID if none is passed into it
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/// <param name="asset"></param>
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/// <returns></returns>
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public string Store(AssetBase asset)
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{
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bool storedInCache = false;
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string errorMessage = null;
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// AssetID handling
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if (String.IsNullOrEmpty(asset.ID) || asset.ID == ZeroID)
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{
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asset.FullID = UUID.Random();
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asset.ID = asset.FullID.ToString();
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}
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// Cache handling
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if (m_cache != null)
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{
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m_cache.Cache(asset);
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storedInCache = true;
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}
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// Local asset handling
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if (asset.Local)
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{
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if (!storedInCache)
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{
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m_log.Error("Cannot store local " + asset.Metadata.ContentType + " asset without an asset cache");
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asset.ID = null;
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asset.FullID = UUID.Zero;
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}
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return asset.ID;
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}
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// Distinguish public and private assets
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bool isPublic = true;
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switch ((AssetType)asset.Type)
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{
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case AssetType.CallingCard:
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case AssetType.Gesture:
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case AssetType.LSLBytecode:
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case AssetType.LSLText:
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isPublic = false;
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break;
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}
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// Make sure ContentType is set
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if (String.IsNullOrEmpty(asset.Metadata.ContentType))
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asset.Metadata.ContentType = SLUtil.SLAssetTypeToContentType(asset.Type);
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// Build the remote storage request
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List<MultipartForm.Element> postParameters = new List<MultipartForm.Element>()
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{
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new MultipartForm.Parameter("AssetID", asset.FullID.ToString()),
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new MultipartForm.Parameter("CreatorID", asset.Metadata.CreatorID),
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new MultipartForm.Parameter("Temporary", asset.Temporary ? "1" : "0"),
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new MultipartForm.Parameter("Public", isPublic ? "1" : "0"),
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new MultipartForm.File("Asset", asset.Name, asset.Metadata.ContentType, asset.Data)
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};
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// Make the remote storage request
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try
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{
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HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(m_serverUrl);
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HttpWebResponse response = MultipartForm.Post(request, postParameters);
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using (Stream responseStream = response.GetResponseStream())
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{
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try
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{
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string responseStr = responseStream.GetStreamString();
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OSD responseOSD = OSDParser.Deserialize(responseStr);
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if (responseOSD.Type == OSDType.Map)
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{
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OSDMap responseMap = (OSDMap)responseOSD;
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if (responseMap["Success"].AsBoolean())
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return asset.ID;
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else
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errorMessage = "Upload failed: " + responseMap["Message"].AsString();
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}
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else
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{
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errorMessage = "Response format was invalid.";
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}
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}
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catch
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{
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errorMessage = "Failed to parse the response.";
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}
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}
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}
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catch (WebException ex)
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{
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errorMessage = ex.Message;
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}
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m_log.WarnFormat("[ASSET CONNECTOR]: Failed to store asset \"{0}\" ({1}, {2}): {3}",
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asset.Name, asset.ID, asset.Metadata.ContentType, errorMessage);
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return null;
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}
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/// <summary>
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/// Update an asset's content
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/// </summary>
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/// Attachments and bare scripts need this!!
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/// <param name="id"> </param>
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/// <param name="data"></param>
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/// <returns></returns>
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public bool UpdateContent(string id, byte[] data)
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{
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AssetBase asset = Get(id);
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if (asset == null)
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{
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m_log.Warn("[ASSET CONNECTOR]: Failed to fetch asset " + id + " for updating");
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return false;
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}
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asset.Data = data;
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string result = Store(asset);
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return !String.IsNullOrEmpty(result);
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}
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/// <summary>
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/// Delete an asset
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/// </summary>
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/// <param name="id"></param>
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/// <returns></returns>
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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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string url = m_serverUrl + id;
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OSDMap response = WebUtil.ServiceRequest(url, "DELETE");
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if (response["Success"].AsBoolean())
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return true;
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else
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m_log.Warn("[ASSET CONNECTOR]: Failed to delete asset " + id + " from the asset service");
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return false;
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}
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#endregion IAssetService
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}
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}
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