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434 lines
14 KiB
C#
434 lines
14 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 System;
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using System.Threading;
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using System.Collections.Generic;
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using System.Collections.Concurrent;
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using System.IO;
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using System.Reflection;
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using System.Timers;
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using Nini.Config;
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using OpenSim.Framework;
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using OpenSim.Framework.Monitoring;
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using OpenSim.Framework.ServiceAuth;
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using OpenSim.Services.Interfaces;
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using OpenMetaverse;
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namespace OpenSim.Services.Connectors
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{
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public class AssetServicesConnector : BaseServiceConnector, IAssetService
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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public readonly object ConnectorLock = new object();
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protected IAssetCache m_Cache = null;
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private string m_ServerURI = string.Empty;
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private delegate void AssetRetrievedEx(AssetBase asset);
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// Keeps track of concurrent requests for the same asset, so that it's only loaded once.
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// Maps: Asset ID -> Handlers which will be called when the asset has been loaded
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private Dictionary<string, List<AssetRetrievedEx>> m_AssetHandlers = new Dictionary<string, List<AssetRetrievedEx>>();
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public AssetServicesConnector()
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{
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}
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public AssetServicesConnector(string serverURI)
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{
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OSHHTPHost tmp = new OSHHTPHost(serverURI, true);
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m_ServerURI = tmp.IsResolvedHost ? tmp.URI : null;
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}
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public AssetServicesConnector(IConfigSource source)
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{
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Initialise(source);
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}
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public virtual void Initialise(IConfigSource source)
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{
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IConfig netconfig = source.Configs["Network"];
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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("[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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m_ServerURI = assetConfig.GetString("AssetServerURI", string.Empty);
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if (string.IsNullOrEmpty(m_ServerURI))
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{
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if(netconfig != null)
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m_ServerURI = netconfig.GetString("asset_server_url", string.Empty);
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}
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if (string.IsNullOrEmpty(m_ServerURI))
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{
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m_log.Error("[ASSET CONNECTOR]: AssetServerURI not defined in section AssetService");
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throw new Exception("Asset connector init error");
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}
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OSHHTPHost m_GridAssetsURL = new OSHHTPHost(m_ServerURI, true);
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if(!m_GridAssetsURL.IsResolvedHost)
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{
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m_log.Error("[ASSET CONNECTOR]: Could not parse or resolve AssetServerURI");
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throw new Exception("Asset connector init error");
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}
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m_ServerURI = m_GridAssetsURL.URI;
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Initialise(source, "AssetService");
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}
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private int m_maxAssetRequestConcurrency = 8;
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public int MaxAssetRequestConcurrency
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{
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get { return m_maxAssetRequestConcurrency; }
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set { m_maxAssetRequestConcurrency = value; }
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}
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protected void SetCache(IAssetCache cache)
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{
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m_Cache = cache;
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}
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public AssetBase GetCached(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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m_Cache.Get(id, out asset);
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}
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return asset;
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}
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public virtual AssetBase Get(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.Get(id, out asset))
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return null;
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}
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if (asset == null && m_ServerURI != null)
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{
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string uri = m_ServerURI + "/assets/" + id;
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asset = SynchronousRestObjectRequester.MakeGetRequest<AssetBase>(uri, 0, m_Auth);
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if (m_Cache != null)
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{
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if (asset != null)
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m_Cache.Cache(asset);
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else
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m_Cache.CacheNegative(id);
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}
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}
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return asset;
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}
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public AssetBase Get(string id, string ForeignAssetService, bool dummy)
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{
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return null;
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}
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public virtual AssetMetadata GetMetadata(string id)
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{
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if (m_Cache != null)
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{
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AssetBase fullAsset;
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if (!m_Cache.Get(id, out fullAsset))
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return null;
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if (fullAsset != null)
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return fullAsset.Metadata;
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}
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if (m_ServerURI == null)
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return null;
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string uri = m_ServerURI + "/assets/" + id + "/metadata";
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return SynchronousRestObjectRequester.MakeGetRequest<AssetMetadata>(uri, 0, m_Auth);
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}
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public virtual byte[] GetData(string id)
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{
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if (m_Cache != null)
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{
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if (!m_Cache.Get(id, out AssetBase fullAsset))
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return null;
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if (fullAsset != null)
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return fullAsset.Data;
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}
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if (m_ServerURI == null)
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return null;
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using (RestClient rc = new RestClient(m_ServerURI))
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{
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rc.AddResourcePath("assets/" + id + "/data");
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rc.RequestMethod = "GET";
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using (MemoryStream s = rc.Request(m_Auth))
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{
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if (s == null || s.Length == 0)
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return null;
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return s.ToArray();
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}
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}
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}
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public virtual 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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{
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if (!m_Cache.Get(id, out asset))
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return false;
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}
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if (asset == null && m_ServerURI != null)
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{
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string uri = m_ServerURI + "/assets/" + id;
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lock (m_AssetHandlers)
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{
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AssetRetrievedEx handlerEx = new AssetRetrievedEx(delegate (AssetBase _asset) { handler(id, sender, _asset); });
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List<AssetRetrievedEx> handlers;
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if (m_AssetHandlers.TryGetValue(id, out handlers))
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{
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// Someone else is already loading this asset. It will notify our handler when done.
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handlers.Add(handlerEx);
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return true;
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}
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handlers = new List<AssetRetrievedEx>();
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handlers.Add(handlerEx);
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m_AssetHandlers.Add(id, handlers);
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QueuedAssetRequest request = new QueuedAssetRequest();
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request.id = id;
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request.uri = uri;
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Util.FireAndForget(x =>
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{
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AssetRequestProcessor(request);
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});
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}
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}
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else
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{
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if (asset != null && (asset.Data == null || asset.Data.Length == 0))
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asset = null;
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handler(id, sender, asset);
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}
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return true;
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}
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private class QueuedAssetRequest
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{
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public string uri;
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public string id;
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}
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private void AssetRequestProcessor(QueuedAssetRequest r)
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{
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string id = r.id;
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try
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{
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AssetBase a = SynchronousRestObjectRequester.MakeGetRequest<AssetBase>(r.uri, 30000, m_Auth);
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if (a != null && m_Cache != null)
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m_Cache.Cache(a);
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List<AssetRetrievedEx> handlers;
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lock (m_AssetHandlers)
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{
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handlers = m_AssetHandlers[id];
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m_AssetHandlers.Remove(id);
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}
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if(handlers != null)
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{
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foreach (AssetRetrievedEx h in handlers)
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{
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try { h.Invoke(a); }
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catch { }
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}
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handlers.Clear();
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}
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}
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catch { }
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}
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public virtual bool[] AssetsExist(string[] ids)
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{
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if (m_ServerURI == null)
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return null;
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string uri = m_ServerURI + "/get_assets_exist";
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bool[] exist = null;
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try
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{
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exist = SynchronousRestObjectRequester.MakeRequest<string[], bool[]>("POST", uri, ids, m_Auth);
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}
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catch (Exception)
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{
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// This is most likely to happen because the server doesn't support this function,
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// so just silently return "doesn't exist" for all the assets.
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}
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if (exist == null)
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exist = new bool[ids.Length];
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return exist;
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}
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public virtual string Store(AssetBase asset)
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{
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// Have to assign the asset ID here. This isn't likely to
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// trigger since current callers don't pass emtpy IDs
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// We need the asset ID to route the request to the proper
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// cluster member, so we can't have the server assign one.
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if (asset.ID.Length == 0 || asset.ID == UUID.ZeroString)
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{
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if (asset.FullID.IsZero())
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{
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asset.FullID = UUID.Random();
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m_log.Warn($"[Assets] Zero ID: {asset.Name}");
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}
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asset.ID = asset.FullID.ToString();
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}
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else if (asset.FullID.IsZero())
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{
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if (UUID.TryParse(asset.ID, out UUID uuid))
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asset.FullID = uuid;
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else
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{
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m_log.Warn($"[Assets] Invalid UUID on ID: {asset.ID}");
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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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}
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if (asset.Temporary || asset.Local)
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{
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m_Cache?.Cache(asset);
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return asset.ID;
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}
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if (m_ServerURI == null)
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return null;
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string uri = m_ServerURI + "/assets/";
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string newID;
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try
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{
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newID = SynchronousRestObjectRequester.MakeRequest<AssetBase, string>("POST", uri, asset, 30000, m_Auth);
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}
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catch
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{
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newID = null;
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}
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if (string.IsNullOrEmpty(newID) || newID.Equals(UUID.ZeroString))
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{
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return string.Empty;
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}
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else
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{
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if (newID != asset.ID)
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{
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// Placing this here, so that this work with old asset servers that don't send any reply back
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// SynchronousRestObjectRequester returns somethins that is not an empty string
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asset.ID = newID;
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m_Cache?.Cache(asset);
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}
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}
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return asset.ID;
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}
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public virtual bool UpdateContent(string id, byte[] data)
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{
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if (m_ServerURI == null)
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return false;
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AssetBase asset = null;
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m_Cache?.Get(id, out asset);
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if (asset == null)
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{
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AssetMetadata metadata = GetMetadata(id);
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if (metadata == null)
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return false;
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asset = new AssetBase(metadata.FullID, metadata.Name, metadata.Type, UUID.Zero.ToString());
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asset.Metadata = metadata;
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}
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asset.Data = data;
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string uri = m_ServerURI + "/assets/" + id;
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if (SynchronousRestObjectRequester.MakeRequest<AssetBase, bool>("POST", uri, asset, m_Auth))
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{
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m_Cache?.Cache(asset, true);
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return true;
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}
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return false;
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}
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public virtual bool Delete(string id)
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{
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m_Cache?.Expire(id);
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if (m_ServerURI == null)
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return false;
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string uri = m_ServerURI + "/assets/" + id;
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return SynchronousRestObjectRequester.MakeRequest<int, bool>("DELETE", uri, 0, m_Auth);
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}
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public void Get(string id, string ForeignAssetService, bool StoreOnLocalGrid, SimpleAssetRetrieved callBack)
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{
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return;
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}
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}
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}
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