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- /*
- * Copyright (c) Contributors, http://opensimulator.org/
- * See CONTRIBUTORS.TXT for a full list of copyright holders.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of the OpenSimulator Project nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- using System;
- using System.Collections;
- using System.Collections.Generic;
- using System.Collections.Concurrent;
- using System.Reflection;
- using System.Threading;
- using Mono.Addins;
- using OpenSim.Framework.Monitoring;
- using log4net;
- using Nini.Config;
- using OpenMetaverse;
- using OpenSim.Capabilities.Handlers;
- using OpenSim.Framework;
- using OpenSim.Framework.Servers;
- using OpenSim.Framework.Servers.HttpServer;
- using OpenSim.Region.Framework.Interfaces;
- using OpenSim.Region.Framework.Scenes;
- using OpenSim.Services.Interfaces;
- using Caps = OpenSim.Framework.Capabilities.Caps;
- namespace OpenSim.Region.ClientStack.Linden
- {
- [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "GetMeshModule")]
- public class GetMeshModule : INonSharedRegionModule
- {
- // private static readonly ILog m_log =
- // LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
- private Scene m_scene;
- private bool m_Enabled = true;
- private string m_URL;
- private string m_URL2;
- private string m_RedirectURL = null;
- private string m_RedirectURL2 = null;
- class APollRequest
- {
- public PollServiceMeshEventArgs thepoll;
- public UUID reqID;
- public Hashtable request;
- }
- public class APollResponse
- {
- public Hashtable response;
- public int bytes;
- }
- private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
- private static GetMeshHandler m_getMeshHandler;
- private IAssetService m_assetService = null;
- private Dictionary<UUID, string> m_capsDict = new Dictionary<UUID, string>();
- private static Thread[] m_workerThreads = null;
- private static int m_NumberScenes = 0;
- private static BlockingCollection<APollRequest> m_queue = new BlockingCollection<APollRequest>();
- private Dictionary<UUID, PollServiceMeshEventArgs> m_pollservices = new Dictionary<UUID, PollServiceMeshEventArgs>();
- #region Region Module interfaceBase Members
- public Type ReplaceableInterface
- {
- get { return null; }
- }
- public void Initialise(IConfigSource source)
- {
- IConfig config = source.Configs["ClientStack.LindenCaps"];
- if (config == null)
- return;
- m_URL = config.GetString("Cap_GetMesh", string.Empty);
- // Cap doesn't exist
- if (m_URL != string.Empty)
- {
- m_Enabled = true;
- m_RedirectURL = config.GetString("GetMeshRedirectURL");
- }
- m_URL2 = config.GetString("Cap_GetMesh2", string.Empty);
- // Cap doesn't exist
- if (m_URL2 != string.Empty)
- {
- m_Enabled = true;
- m_RedirectURL2 = config.GetString("GetMesh2RedirectURL");
- }
- }
- public void AddRegion(Scene pScene)
- {
- if (!m_Enabled)
- return;
- m_scene = pScene;
- }
- public void RemoveRegion(Scene s)
- {
- if (!m_Enabled)
- return;
- s.EventManager.OnRegisterCaps -= RegisterCaps;
- s.EventManager.OnDeregisterCaps -= DeregisterCaps;
- m_NumberScenes--;
- m_scene = null;
- }
- public void RegionLoaded(Scene s)
- {
- if (!m_Enabled)
- return;
- if(m_assetService == null)
- {
- m_assetService = m_scene.RequestModuleInterface<IAssetService>();
- // We'll reuse the same handler for all requests.
- m_getMeshHandler = new GetMeshHandler(m_assetService);
- }
- s.EventManager.OnRegisterCaps += RegisterCaps;
- s.EventManager.OnDeregisterCaps += DeregisterCaps;
- m_NumberScenes++;
- if (m_workerThreads == null)
- {
- m_workerThreads = new Thread[2];
- for (uint i = 0; i < 2; i++)
- {
- m_workerThreads[i] = WorkManager.StartThread(DoMeshRequests,
- String.Format("GetMeshWorker{0}", i),
- ThreadPriority.Normal,
- true,
- false,
- null,
- int.MaxValue);
- }
- }
- }
- public void Close()
- {
- if(m_NumberScenes <= 0 && m_workerThreads != null)
- {
- m_log.DebugFormat("[GetMeshModule] Closing");
- foreach (Thread t in m_workerThreads)
- Watchdog.AbortThread(t.ManagedThreadId);
- // This will fail on region shutdown. Its harmless.
- // Prevent red ink.
- try
- {
- m_queue.Dispose();
- }
- catch {}
- }
- }
- public string Name { get { return "GetMeshModule"; } }
- #endregion
- private static void DoMeshRequests()
- {
- while (m_NumberScenes > 0)
- {
- APollRequest poolreq;
- if(m_queue.TryTake(out poolreq, 4500))
- {
- if(m_NumberScenes <= 0)
- break;
-
- if(poolreq.reqID != UUID.Zero)
- poolreq.thepoll.Process(poolreq);
- }
- Watchdog.UpdateThread();
- }
- }
- private class PollServiceMeshEventArgs : PollServiceEventArgs
- {
- private List<Hashtable> requests =
- new List<Hashtable>();
- private Dictionary<UUID, APollResponse> responses =
- new Dictionary<UUID, APollResponse>();
- private HashSet<UUID> dropedResponses = new HashSet<UUID>();
- private Scene m_scene;
- private ScenePresence m_presence;
- public PollServiceMeshEventArgs(string uri, UUID pId, Scene scene) :
- base(null, uri, null, null, null, null, pId, int.MaxValue)
- {
- m_scene = scene;
- // x is request id, y is userid
- HasEvents = (x, y) =>
- {
- lock (responses)
- {
- APollResponse response;
- if (responses.TryGetValue(x, out response))
- {
- if (m_presence == null)
- m_presence = m_scene.GetScenePresence(pId);
- if (m_presence == null || m_presence.IsDeleted)
- return true;
- return m_presence.CapCanSendAsset(1, response.bytes);
- }
- return false;
- }
- };
- Drop = (x, y) =>
- {
- lock (responses)
- {
- responses.Remove(x);
- lock(dropedResponses)
- dropedResponses.Add(x);
- }
- };
- GetEvents = (x, y) =>
- {
- lock (responses)
- {
- try
- {
- return responses[x].response;
- }
- finally
- {
- responses.Remove(x);
- }
- }
- };
- // x is request id, y is request data hashtable
- Request = (x, y) =>
- {
- APollRequest reqinfo = new APollRequest();
- reqinfo.thepoll = this;
- reqinfo.reqID = x;
- reqinfo.request = y;
- m_queue.Add(reqinfo);
- };
- // this should never happen except possible on shutdown
- NoEvents = (x, y) =>
- {
- /*
- lock (requests)
- {
- Hashtable request = requests.Find(id => id["RequestID"].ToString() == x.ToString());
- requests.Remove(request);
- }
- */
- Hashtable response = new Hashtable();
- response["int_response_code"] = 500;
- response["str_response_string"] = "timeout";
- response["content_type"] = "text/plain";
- response["keepalive"] = false;
- return response;
- };
- }
- public void Process(APollRequest requestinfo)
- {
- Hashtable curresponse;
- UUID requestID = requestinfo.reqID;
- if(m_scene.ShuttingDown)
- return;
- lock(responses)
- {
- lock(dropedResponses)
- {
- if(dropedResponses.Contains(requestID))
- {
- dropedResponses.Remove(requestID);
- return;
- }
- }
- // If the avatar is gone, don't bother to get the texture
- if(m_scene.GetScenePresence(Id) == null)
- {
- curresponse = new Hashtable();
- curresponse["int_response_code"] = 500;
- curresponse["str_response_string"] = "timeout";
- curresponse["content_type"] = "text/plain";
- curresponse["keepalive"] = false;
- responses[requestID] = new APollResponse() { bytes = 0, response = curresponse };
- return;
- }
- }
- curresponse = m_getMeshHandler.Handle(requestinfo.request);
- lock(responses)
- {
- lock(dropedResponses)
- {
- if(dropedResponses.Contains(requestID))
- {
- dropedResponses.Remove(requestID);
- return;
- }
- }
- responses[requestID] = new APollResponse()
- {
- bytes = (int)curresponse["int_bytes"],
- response = curresponse
- };
- }
- }
- }
- public void RegisterCaps(UUID agentID, Caps caps)
- {
- // UUID capID = UUID.Random();
- if (m_URL == "localhost")
- {
- string capUrl = "/CAPS/" + UUID.Random() + "/";
- // Register this as a poll service
- PollServiceMeshEventArgs args = new PollServiceMeshEventArgs(capUrl, agentID, m_scene);
- args.Type = PollServiceEventArgs.EventType.Mesh;
- MainServer.Instance.AddPollServiceHTTPHandler(capUrl, args);
- string hostName = m_scene.RegionInfo.ExternalHostName;
- uint port = (MainServer.Instance == null) ? 0 : MainServer.Instance.Port;
- string protocol = "http";
- if (MainServer.Instance.UseSSL)
- {
- hostName = MainServer.Instance.SSLCommonName;
- port = MainServer.Instance.SSLPort;
- protocol = "https";
- }
- caps.RegisterHandler("GetMesh", String.Format("{0}://{1}:{2}{3}", protocol, hostName, port, capUrl));
- m_pollservices[agentID] = args;
- m_capsDict[agentID] = capUrl;
- }
- else
- {
- caps.RegisterHandler("GetMesh", m_URL);
- }
- }
- private void DeregisterCaps(UUID agentID, Caps caps)
- {
- string capUrl;
- PollServiceMeshEventArgs args;
- if (m_capsDict.TryGetValue(agentID, out capUrl))
- {
- MainServer.Instance.RemoveHTTPHandler("", capUrl);
- m_capsDict.Remove(agentID);
- }
- if (m_pollservices.TryGetValue(agentID, out args))
- {
- m_pollservices.Remove(agentID);
- }
- }
- }
- }
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