mirror of
https://github.com/opensim/opensim.git
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410 lines
13 KiB
C#
410 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 System;
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using System.Collections.Generic;
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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.Console;
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using OpenSim.Framework.Communications;
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using OpenSim.Framework.Servers.HttpServer;
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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 : 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 string m_ServerURI = String.Empty;
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private IImprovedAssetCache m_Cache = null;
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private int m_retryCounter;
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private Dictionary<int, List<AssetBase>> m_retryQueue = new Dictionary<int, List<AssetBase>>();
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private Timer m_retryTimer;
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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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m_ServerURI = serverURI.TrimEnd('/');
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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 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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string serviceURI = assetConfig.GetString("AssetServerURI",
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String.Empty);
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if (serviceURI == String.Empty)
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{
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m_log.Error("[ASSET CONNECTOR]: No Server URI named in section AssetService");
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throw new Exception("Asset connector init error");
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}
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m_ServerURI = serviceURI;
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MainConsole.Instance.Commands.AddCommand("asset", false, "dump asset",
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"dump asset <id> <file>",
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"dump one cached asset", HandleDumpAsset);
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m_retryTimer = new Timer();
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m_retryTimer.Elapsed += new ElapsedEventHandler(retryCheck);
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m_retryTimer.Interval = 60000;
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}
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protected void retryCheck(object source, ElapsedEventArgs e)
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{
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m_retryCounter++;
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if (m_retryCounter > 60) m_retryCounter -= 60;
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List<int> keys = new List<int>();
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foreach (int a in m_retryQueue.Keys)
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{
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keys.Add(a);
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}
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foreach (int a in keys)
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{
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//We exponentially fall back on frequency until we reach one attempt per hour
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//The net result is that we end up in the queue for roughly 24 hours..
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//24 hours worth of assets could be a lot, so the hope is that the region admin
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//will have gotten the asset connector back online quickly!
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int timefactor = a ^ 2;
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if (timefactor > 60)
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{
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timefactor = 60;
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}
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//First, find out if we care about this timefactor
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if (timefactor % a == 0)
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{
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//Yes, we do!
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List<AssetBase> retrylist = m_retryQueue[a];
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m_retryQueue.Remove(a);
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foreach(AssetBase ass in retrylist)
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{
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Store(ass); //Store my ass. This function will put it back in the dictionary if it fails
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}
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}
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}
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if (m_retryQueue.Count == 0)
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{
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//It might only be one tick per minute, but I have
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//repented and abandoned my wasteful ways
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m_retryCounter = 0;
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m_retryTimer.Stop();
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}
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}
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protected void SetCache(IImprovedAssetCache cache)
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{
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m_Cache = cache;
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}
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public AssetBase Get(string id)
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{
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string uri = m_ServerURI + "/assets/" + 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 || asset.Data == null || asset.Data.Length == 0)
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{
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asset = SynchronousRestObjectRequester.
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MakeRequest<int, AssetBase>("GET", uri, 0);
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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 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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if (m_Cache != null)
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{
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AssetBase fullAsset = m_Cache.Get(id);
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if (fullAsset != null)
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return fullAsset.Metadata;
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}
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string uri = m_ServerURI + "/assets/" + id + "/metadata";
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AssetMetadata asset = SynchronousRestObjectRequester.
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MakeRequest<int, AssetMetadata>("GET", uri, 0);
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return asset;
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}
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public byte[] GetData(string id)
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{
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if (m_Cache != null)
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{
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AssetBase fullAsset = m_Cache.Get(id);
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if (fullAsset != null)
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return fullAsset.Data;
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}
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RestClient rc = new RestClient(m_ServerURI);
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rc.AddResourcePath("assets");
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rc.AddResourcePath(id);
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rc.AddResourcePath("data");
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rc.RequestMethod = "GET";
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Stream s = rc.Request();
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if (s == null)
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return null;
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if (s.Length > 0)
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{
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byte[] ret = new byte[s.Length];
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s.Read(ret, 0, (int)s.Length);
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return ret;
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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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string uri = m_ServerURI + "/assets/" + 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 || asset.Data == null || asset.Data.Length == 0)
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{
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bool result = false;
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AsynchronousRestObjectRequester.
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MakeRequest<int, AssetBase>("GET", uri, 0,
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delegate(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(id, sender, a);
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result = true;
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});
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return result;
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}
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else
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{
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//Util.FireAndForget(delegate { handler(id, sender, asset); });
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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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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.Temporary || asset.Local)
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{
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return asset.ID;
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}
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string uri = m_ServerURI + "/assets/";
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string newID = string.Empty;
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try
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{
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newID = SynchronousRestObjectRequester.
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MakeRequest<AssetBase, string>("POST", uri, asset, 25);
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if (newID == null || newID == "")
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{
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newID = UUID.Zero.ToString();
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}
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}
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catch (Exception e)
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{
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newID = UUID.Zero.ToString();
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}
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if (newID == UUID.Zero.ToString())
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{
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//The asset upload failed, put it in a queue for later
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asset.UploadAttempts++;
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if (asset.UploadAttempts > 30)
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{
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//By this stage we've been in the queue for a good few hours;
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//We're going to drop the asset.
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m_log.ErrorFormat("[Assets] Dropping asset {0} - Upload has been in the queue for too long.", asset.ID.ToString());
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}
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else
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{
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if (!m_retryQueue.ContainsKey(asset.UploadAttempts))
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{
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m_retryQueue.Add(asset.UploadAttempts, new List<AssetBase>());
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}
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List<AssetBase> m_queue = m_retryQueue[asset.UploadAttempts];
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m_queue.Add(asset);
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m_log.WarnFormat("[Assets] Upload failed: {0} - Requeuing asset for another run.", asset.ID.ToString());
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m_retryTimer.Start();
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}
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}
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else
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{
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if (asset.UploadAttempts > 0)
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{
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m_log.InfoFormat("[Assets] Upload of {0} succeeded after {1} failed attempts", asset.ID.ToString(), asset.UploadAttempts.ToString());
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}
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if (newID != String.Empty)
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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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if (newID != null)
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asset.ID = newID;
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if (m_Cache != null)
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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 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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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.
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MakeRequest<AssetBase, bool>("POST", uri, 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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return true;
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}
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return false;
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}
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public bool Delete(string id)
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{
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string uri = m_ServerURI + "/assets/" + id;
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if (SynchronousRestObjectRequester.
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MakeRequest<int, bool>("DELETE", uri, 0))
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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 true;
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}
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return false;
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}
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private void HandleDumpAsset(string module, string[] args)
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{
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if (args.Length != 4)
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{
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MainConsole.Instance.Output("Syntax: dump asset <id> <file>");
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return;
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}
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UUID assetID;
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if (!UUID.TryParse(args[2], out assetID))
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{
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MainConsole.Instance.Output("Invalid asset ID");
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return;
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}
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if (m_Cache == null)
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{
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MainConsole.Instance.Output("Instance uses no cache");
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return;
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}
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AssetBase asset = m_Cache.Get(assetID.ToString());
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if (asset == null)
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{
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MainConsole.Instance.Output("Asset not found in cache");
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return;
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}
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string fileName = args[3];
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FileStream fs = File.Create(fileName);
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fs.Write(asset.Data, 0, asset.Data.Length);
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fs.Close();
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}
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}
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}
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