/* * Copyright (c) Contributors, http://www.openmetaverse.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 OpenSim 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.Generic; using System.Threading; using System.Reflection; using libsecondlife; using libsecondlife.Packets; using OpenSim.Framework.Interfaces; using OpenSim.Framework.Types; using OpenSim.Framework.Utilities; namespace OpenSim.Caches { public delegate void DownloadComplete(AssetCache.TextureSender sender); /// <summary> /// Manages local cache of assets and their sending to viewers. /// </summary> public class AssetCache : IAssetReceiver { public Dictionary<libsecondlife.LLUUID, AssetInfo> Assets; public Dictionary<libsecondlife.LLUUID, TextureImage> Textures; public List<AssetRequest> AssetRequests = new List<AssetRequest>(); //assets ready to be sent to viewers public List<AssetRequest> TextureRequests = new List<AssetRequest>(); //textures ready to be sent public Dictionary<LLUUID, AssetRequest> RequestedAssets = new Dictionary<LLUUID, AssetRequest>(); //Assets requested from the asset server public Dictionary<LLUUID, AssetRequest> RequestedTextures = new Dictionary<LLUUID, AssetRequest>(); //Textures requested from the asset server public Dictionary<LLUUID, TextureSender> SendingTextures = new Dictionary<LLUUID, TextureSender>(); private IAssetServer _assetServer; private Thread _assetCacheThread; private LLUUID[] textureList = new LLUUID[5]; /// <summary> /// /// </summary> public AssetCache(IAssetServer assetServer) { Console.WriteLine("Creating Asset cache"); _assetServer = assetServer; _assetServer.SetReceiver(this); Assets = new Dictionary<libsecondlife.LLUUID, AssetInfo>(); Textures = new Dictionary<libsecondlife.LLUUID, TextureImage>(); this._assetCacheThread = new Thread(new ThreadStart(RunAssetManager)); this._assetCacheThread.IsBackground = true; this._assetCacheThread.Start(); } public AssetCache(string assetServerDLLName, string assetServerURL, string assetServerKey) { Console.WriteLine("Creating Asset cache"); _assetServer = this.LoadAssetDll(assetServerDLLName); _assetServer.SetServerInfo(assetServerURL, assetServerKey); _assetServer.SetReceiver(this); Assets = new Dictionary<libsecondlife.LLUUID, AssetInfo>(); Textures = new Dictionary<libsecondlife.LLUUID, TextureImage>(); this._assetCacheThread = new Thread(new ThreadStart(RunAssetManager)); this._assetCacheThread.IsBackground = true; this._assetCacheThread.Start(); } /// <summary> /// /// </summary> public void RunAssetManager() { while (true) { try { //Console.WriteLine("Asset cache loop"); this.ProcessAssetQueue(); this.ProcessTextureQueue(); Thread.Sleep(500); } catch (Exception e) { Console.WriteLine(e.Message); } } } public void LoadDefaultTextureSet() { //hack: so we can give each user a set of textures textureList[0] = new LLUUID("00000000-0000-0000-9999-000000000001"); textureList[1] = new LLUUID("00000000-0000-0000-9999-000000000002"); textureList[2] = new LLUUID("00000000-0000-0000-9999-000000000003"); textureList[3] = new LLUUID("00000000-0000-0000-9999-000000000004"); textureList[4] = new LLUUID("00000000-0000-0000-9999-000000000005"); for (int i = 0; i < textureList.Length; i++) { this._assetServer.RequestAsset(textureList[i], true); } } public AssetBase[] CreateNewInventorySet(LLUUID agentID) { AssetBase[] inventorySet = new AssetBase[this.textureList.Length]; for (int i = 0; i < textureList.Length; i++) { if (this.Textures.ContainsKey(textureList[i])) { inventorySet[i] = this.CloneImage(agentID, this.Textures[textureList[i]]); TextureImage image = new TextureImage(inventorySet[i]); this.Textures.Add(image.FullID, image); this._assetServer.UploadNewAsset(image); //save the asset to the asset server } } return inventorySet; } public AssetBase GetAsset(LLUUID assetID) { AssetBase asset = null; if (this.Textures.ContainsKey(assetID)) { asset = this.Textures[assetID]; } else if (this.Assets.ContainsKey(assetID)) { asset = this.Assets[assetID]; } return asset; } public void AddAsset(AssetBase asset) { // Console.WriteLine("adding asset " + asset.FullID.ToStringHyphenated()); if (asset.Type == 0) { //Console.WriteLine("which is a texture"); if (!this.Textures.ContainsKey(asset.FullID)) { //texture TextureImage textur = new TextureImage(asset); this.Textures.Add(textur.FullID, textur); this._assetServer.UploadNewAsset(asset); } } else { if (!this.Assets.ContainsKey(asset.FullID)) { AssetInfo assetInf = new AssetInfo(asset); this.Assets.Add(assetInf.FullID, assetInf); this._assetServer.UploadNewAsset(asset); } } } /// <summary> /// /// </summary> private void ProcessTextureQueue() { if (this.TextureRequests.Count == 0) { //no requests waiting return; } int num; num = this.TextureRequests.Count; AssetRequest req; for (int i = 0; i < num; i++) { req = (AssetRequest)this.TextureRequests[i]; if (!this.SendingTextures.ContainsKey(req.ImageInfo.FullID)) { TextureSender sender = new TextureSender(req); sender.OnComplete += this.TextureSent; lock (this.SendingTextures) { this.SendingTextures.Add(req.ImageInfo.FullID, sender); } } } this.TextureRequests.Clear(); } /// <summary> /// Event handler, called by a TextureSender object to say that texture has been sent /// </summary> /// <param name="sender"></param> public void TextureSent(AssetCache.TextureSender sender) { if (this.SendingTextures.ContainsKey(sender.request.ImageInfo.FullID)) { lock (this.SendingTextures) { this.SendingTextures.Remove(sender.request.ImageInfo.FullID); } } } public void AssetReceived(AssetBase asset, bool IsTexture) { if (asset.FullID != LLUUID.Zero) // if it is set to zero then the asset wasn't found by the server { //check if it is a texture or not //then add to the correct cache list //then check for waiting requests for this asset/texture (in the Requested lists) //and move those requests into the Requests list. if (IsTexture) { TextureImage image = new TextureImage(asset); this.Textures.Add(image.FullID, image); if (this.RequestedTextures.ContainsKey(image.FullID)) { AssetRequest req = this.RequestedTextures[image.FullID]; req.ImageInfo = image; if (image.Data.LongLength > 600) { //over 600 bytes so split up file req.NumPackets = 1 + (int)(image.Data.Length - 600 + 999) / 1000; } else { req.NumPackets = 1; } this.RequestedTextures.Remove(image.FullID); this.TextureRequests.Add(req); } } else { AssetInfo assetInf = new AssetInfo(asset); this.Assets.Add(assetInf.FullID, assetInf); if (this.RequestedAssets.ContainsKey(assetInf.FullID)) { AssetRequest req = this.RequestedAssets[assetInf.FullID]; req.AssetInf = assetInf; if (assetInf.Data.LongLength > 600) { //over 600 bytes so split up file req.NumPackets = 1 + (int)(assetInf.Data.Length - 600 + 999) / 1000; } else { req.NumPackets = 1; } this.RequestedAssets.Remove(assetInf.FullID); this.AssetRequests.Add(req); } } } } public void AssetNotFound(AssetBase asset) { //the asset server had no knowledge of requested asset } #region Assets /// <summary> /// /// </summary> /// <param name="userInfo"></param> /// <param name="transferRequest"></param> public void AddAssetRequest(IClientAPI userInfo, TransferRequestPacket transferRequest) { LLUUID requestID = new LLUUID(transferRequest.TransferInfo.Params, 0); //check to see if asset is in local cache, if not we need to request it from asset server. if (!this.Assets.ContainsKey(requestID)) { //not found asset // so request from asset server if (!this.RequestedAssets.ContainsKey(requestID)) { AssetRequest request = new AssetRequest(); request.RequestUser = userInfo; request.RequestAssetID = requestID; request.TransferRequestID = transferRequest.TransferInfo.TransferID; this.RequestedAssets.Add(requestID, request); this._assetServer.RequestAsset(requestID, false); } return; } //it is in our cache AssetInfo asset = this.Assets[requestID]; //work out how many packets it should be sent in // and add to the AssetRequests list AssetRequest req = new AssetRequest(); req.RequestUser = userInfo; req.RequestAssetID = requestID; req.TransferRequestID = transferRequest.TransferInfo.TransferID; req.AssetInf = asset; if (asset.Data.LongLength > 600) { //over 600 bytes so split up file req.NumPackets = 1 + (int)(asset.Data.Length - 600 + 999) / 1000; } else { req.NumPackets = 1; } this.AssetRequests.Add(req); } /// <summary> /// /// </summary> private void ProcessAssetQueue() { if (this.AssetRequests.Count == 0) { //no requests waiting return; } int num; if (this.AssetRequests.Count < 5) { //lower than 5 so do all of them num = this.AssetRequests.Count; } else { num = 5; } AssetRequest req; for (int i = 0; i < num; i++) { req = (AssetRequest)this.AssetRequests[i]; TransferInfoPacket Transfer = new TransferInfoPacket(); Transfer.TransferInfo.ChannelType = 2; Transfer.TransferInfo.Status = 0; Transfer.TransferInfo.TargetType = 0; Transfer.TransferInfo.Params = req.RequestAssetID.GetBytes(); Transfer.TransferInfo.Size = (int)req.AssetInf.Data.Length; Transfer.TransferInfo.TransferID = req.TransferRequestID; req.RequestUser.OutPacket(Transfer); if (req.NumPackets == 1) { TransferPacketPacket TransferPacket = new TransferPacketPacket(); TransferPacket.TransferData.Packet = 0; TransferPacket.TransferData.ChannelType = 2; TransferPacket.TransferData.TransferID = req.TransferRequestID; TransferPacket.TransferData.Data = req.AssetInf.Data; TransferPacket.TransferData.Status = 1; req.RequestUser.OutPacket(TransferPacket); } else { //more than one packet so split file up , for now it can't be bigger than 2000 bytes TransferPacketPacket TransferPacket = new TransferPacketPacket(); TransferPacket.TransferData.Packet = 0; TransferPacket.TransferData.ChannelType = 2; TransferPacket.TransferData.TransferID = req.TransferRequestID; byte[] chunk = new byte[1000]; Array.Copy(req.AssetInf.Data, chunk, 1000); TransferPacket.TransferData.Data = chunk; TransferPacket.TransferData.Status = 0; req.RequestUser.OutPacket(TransferPacket); TransferPacket = new TransferPacketPacket(); TransferPacket.TransferData.Packet = 1; TransferPacket.TransferData.ChannelType = 2; TransferPacket.TransferData.TransferID = req.TransferRequestID; byte[] chunk1 = new byte[(req.AssetInf.Data.Length - 1000)]; Array.Copy(req.AssetInf.Data, 1000, chunk1, 0, chunk1.Length); TransferPacket.TransferData.Data = chunk1; TransferPacket.TransferData.Status = 1; req.RequestUser.OutPacket(TransferPacket); } } //remove requests that have been completed for (int i = 0; i < num; i++) { this.AssetRequests.RemoveAt(0); } } public AssetInfo CloneAsset(LLUUID newOwner, AssetInfo sourceAsset) { AssetInfo newAsset = new AssetInfo(); newAsset.Data = new byte[sourceAsset.Data.Length]; Array.Copy(sourceAsset.Data, newAsset.Data, sourceAsset.Data.Length); newAsset.FullID = LLUUID.Random(); newAsset.Type = sourceAsset.Type; newAsset.InvType = sourceAsset.InvType; return (newAsset); } #endregion #region Textures /// <summary> /// /// </summary> /// <param name="userInfo"></param> /// <param name="imageID"></param> public void AddTextureRequest(IClientAPI userInfo, LLUUID imageID) { //Console.WriteLine("texture request for " + imageID.ToStringHyphenated()); //check to see if texture is in local cache, if not request from asset server if (!this.Textures.ContainsKey(imageID)) { if (!this.RequestedTextures.ContainsKey(imageID)) { //not is cache so request from asset server AssetRequest request = new AssetRequest(); request.RequestUser = userInfo; request.RequestAssetID = imageID; request.IsTextureRequest = true; this.RequestedTextures.Add(imageID, request); this._assetServer.RequestAsset(imageID, true); } return; } //Console.WriteLine("texture already in cache"); TextureImage imag = this.Textures[imageID]; AssetRequest req = new AssetRequest(); req.RequestUser = userInfo; req.RequestAssetID = imageID; req.IsTextureRequest = true; req.ImageInfo = imag; if (imag.Data.LongLength > 600) { //over 600 bytes so split up file req.NumPackets = 1 + (int)(imag.Data.Length - 600 + 999) / 1000; } else { req.NumPackets = 1; } this.TextureRequests.Add(req); } public TextureImage CloneImage(LLUUID newOwner, TextureImage source) { TextureImage newImage = new TextureImage(); newImage.Data = new byte[source.Data.Length]; Array.Copy(source.Data, newImage.Data, source.Data.Length); //newImage.filename = source.filename; newImage.FullID = LLUUID.Random(); newImage.Name = source.Name; return (newImage); } #endregion private IAssetServer LoadAssetDll(string dllName) { Assembly pluginAssembly = Assembly.LoadFrom(dllName); IAssetServer server = null; foreach (Type pluginType in pluginAssembly.GetTypes()) { if (pluginType.IsPublic) { if (!pluginType.IsAbstract) { Type typeInterface = pluginType.GetInterface("IAssetPlugin", true); if (typeInterface != null) { IAssetPlugin plug = (IAssetPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString())); server = plug.GetAssetServer(); break; } typeInterface = null; } } } pluginAssembly = null; return server; } public class AssetRequest { public IClientAPI RequestUser; public LLUUID RequestAssetID; public AssetInfo AssetInf; public TextureImage ImageInfo; public LLUUID TransferRequestID; public long DataPointer = 0; public int NumPackets = 0; public int PacketCounter = 0; public bool IsTextureRequest; //public bool AssetInCache; //public int TimeRequested; public AssetRequest() { } } public class AssetInfo : AssetBase { public AssetInfo() { } public AssetInfo(AssetBase aBase) { Data = aBase.Data; FullID = aBase.FullID; Type = aBase.Type; InvType = aBase.InvType; Name = aBase.Name; Description = aBase.Description; } } public class TextureImage : AssetBase { public TextureImage() { } public TextureImage(AssetBase aBase) { Data = aBase.Data; FullID = aBase.FullID; Type = aBase.Type; InvType = aBase.InvType; Name = aBase.Name; Description = aBase.Description; } } public class TextureSender { public AssetRequest request; public event DownloadComplete OnComplete; Thread m_thread; public TextureSender(AssetRequest req) { request = req; //Console.WriteLine("creating worker thread for texture " + req.ImageInfo.FullID.ToStringHyphenated()); //Console.WriteLine("texture data length is " + req.ImageInfo.Data.Length); // Console.WriteLine("in " + req.NumPackets + " packets"); //ThreadPool.QueueUserWorkItem(new WaitCallback(SendTexture), new object()); //need some sort of custom threadpool here, as using the .net one, overloads it and stops the handling of incoming packets etc //but don't really want to create a thread for every texture download m_thread = new Thread(new ThreadStart(SendTexture)); m_thread.IsBackground = true; m_thread.Start(); } public void SendTexture() { //Console.WriteLine("starting to send sending texture " + request.ImageInfo.FullID.ToStringHyphenated()); while (request.PacketCounter != request.NumPackets) { SendPacket(); Thread.Sleep(500); } //Console.WriteLine("finished sending texture " + request.ImageInfo.FullID.ToStringHyphenated()); if (OnComplete != null) { OnComplete(this); } } public void SendPacket() { AssetRequest req = request; // Console.WriteLine("sending " + req.ImageInfo.FullID); // if (req.ImageInfo.FullID == new LLUUID("00000000-0000-0000-5005-000000000005")) if (req.PacketCounter == 0) { //first time for this request so send imagedata packet if (req.NumPackets == 1) { //only one packet so send whole file ImageDataPacket im = new ImageDataPacket(); im.ImageID.Packets = 1; im.ImageID.ID = req.ImageInfo.FullID; im.ImageID.Size = (uint)req.ImageInfo.Data.Length; im.ImageData.Data = req.ImageInfo.Data; im.ImageID.Codec = 2; req.RequestUser.OutPacket(im); req.PacketCounter++; //req.ImageInfo.l= time; //System.Console.WriteLine("sent texture: " + req.ImageInfo.FullID); // Console.WriteLine("sending packet 1 for " + req.ImageInfo.FullID.ToStringHyphenated()); } else { //more than one packet so split file up ImageDataPacket im = new ImageDataPacket(); im.ImageID.Packets = (ushort)req.NumPackets; im.ImageID.ID = req.ImageInfo.FullID; im.ImageID.Size = (uint)req.ImageInfo.Data.Length; im.ImageData.Data = new byte[600]; Array.Copy(req.ImageInfo.Data, 0, im.ImageData.Data, 0, 600); im.ImageID.Codec = 2; req.RequestUser.OutPacket(im); req.PacketCounter++; //req.ImageInfo.last_used = time; //System.Console.WriteLine("sent first packet of texture: // Console.WriteLine("sending packet 1 for " + req.ImageInfo.FullID.ToStringHyphenated()); } } else { //Console.WriteLine("sending packet" + req.PacketCounter + "for " + req.ImageInfo.FullID.ToStringHyphenated()); //send imagepacket //more than one packet so split file up ImagePacketPacket im = new ImagePacketPacket(); im.ImageID.Packet = (ushort)req.PacketCounter; im.ImageID.ID = req.ImageInfo.FullID; int size = req.ImageInfo.Data.Length - 600 - 1000 * (req.PacketCounter - 1); if (size > 1000) size = 1000; im.ImageData.Data = new byte[size]; Array.Copy(req.ImageInfo.Data, 600 + 1000 * (req.PacketCounter - 1), im.ImageData.Data, 0, size); req.RequestUser.OutPacket(im); req.PacketCounter++; //req.ImageInfo.last_used = time; //System.Console.WriteLine("sent a packet of texture: "+req.image_info.FullID); } } } } }