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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.Diagnostics;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Text;
using System.Threading;
using System.Reflection;
using OpenSim.Data;
using OpenSim.Framework;
using OpenSim.Framework.Serialization.External;
using OpenSim.Framework.Console;
using OpenSim.Server.Base;
using OpenSim.Services.Base;
using OpenSim.Services.Interfaces;
using Nini.Config;
using log4net;
using OpenMetaverse;
using System.Security.Cryptography;
namespace OpenSim.Services.FSAssetService
{
public class FSAssetConnector : ServiceBase, IAssetService
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
static System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
static SHA256CryptoServiceProvider SHA256 = new SHA256CryptoServiceProvider();
static byte[] ToCString(string s)
{
byte[] ret = enc.GetBytes(s);
Array.Resize(ref ret, ret.Length + 1);
ret[ret.Length - 1] = 0;
return ret;
}
protected IAssetLoader m_AssetLoader = null;
protected IFSAssetDataPlugin m_DataConnector = null;
protected IAssetService m_FallbackService;
protected Thread m_WriterThread;
protected Thread m_StatsThread;
protected string m_SpoolDirectory;
protected object m_readLock = new object();
protected object m_statsLock = new object();
protected int m_readCount = 0;
protected int m_readTicks = 0;
protected int m_missingAssets = 0;
protected int m_missingAssetsFS = 0;
protected string m_FSBase;
private static bool m_Initialized;
private bool m_MainInstance;
public FSAssetConnector(IConfigSource config)
: this(config, "AssetService")
{
}
public FSAssetConnector(IConfigSource config, string configName) : base(config)
{
if (!m_Initialized)
{
m_Initialized = true;
m_MainInstance = true;
MainConsole.Instance.Commands.AddCommand("fs", false,
"show assets", "show assets", "Show asset stats",
HandleShowAssets);
MainConsole.Instance.Commands.AddCommand("fs", false,
"show digest", "show digest <ID>", "Show asset digest",
HandleShowDigest);
MainConsole.Instance.Commands.AddCommand("fs", false,
"delete asset", "delete asset <ID>",
"Delete asset from database",
HandleDeleteAsset);
MainConsole.Instance.Commands.AddCommand("fs", false,
"import", "import <conn> <table> [<start> <count>]",
"Import legacy assets",
HandleImportAssets);
MainConsole.Instance.Commands.AddCommand("fs", false,
"force import", "force import <conn> <table> [<start> <count>]",
"Import legacy assets, overwriting current content",
HandleImportAssets);
}
IConfig assetConfig = config.Configs[configName];
if (assetConfig == null)
throw new Exception("No AssetService configuration");
// Get Database Connector from Asset Config (If present)
string dllName = assetConfig.GetString("StorageProvider", string.Empty);
string m_ConnectionString = assetConfig.GetString("ConnectionString", string.Empty);
string m_Realm = assetConfig.GetString("Realm", "fsassets");
int SkipAccessTimeDays = assetConfig.GetInt("DaysBetweenAccessTimeUpdates", 0);
// If not found above, fallback to Database defaults
IConfig dbConfig = config.Configs["DatabaseService"];
if (dbConfig != null)
{
if (dllName == String.Empty)
dllName = dbConfig.GetString("StorageProvider", String.Empty);
if (m_ConnectionString == String.Empty)
m_ConnectionString = dbConfig.GetString("ConnectionString", String.Empty);
}
// No databse connection found in either config
if (dllName.Equals(String.Empty))
throw new Exception("No StorageProvider configured");
if (m_ConnectionString.Equals(String.Empty))
throw new Exception("Missing database connection string");
// Create Storage Provider
m_DataConnector = LoadPlugin<IFSAssetDataPlugin>(dllName);
if (m_DataConnector == null)
throw new Exception(string.Format("Could not find a storage interface in the module {0}", dllName));
// Initialize DB And perform any migrations required
m_DataConnector.Initialise(m_ConnectionString, m_Realm, SkipAccessTimeDays);
// Setup Fallback Service
string str = assetConfig.GetString("FallbackService", string.Empty);
if (str != string.Empty)
{
object[] args = new object[] { config };
m_FallbackService = LoadPlugin<IAssetService>(str, args);
if (m_FallbackService != null)
{
m_log.Info("[FSASSETS]: Fallback service loaded");
}
else
{
m_log.Error("[FSASSETS]: Failed to load fallback service");
}
}
// Setup directory structure including temp directory
m_SpoolDirectory = assetConfig.GetString("SpoolDirectory", "/tmp");
string spoolTmp = Path.Combine(m_SpoolDirectory, "spool");
Directory.CreateDirectory(spoolTmp);
m_FSBase = assetConfig.GetString("BaseDirectory", String.Empty);
if (m_FSBase == String.Empty)
{
m_log.ErrorFormat("[FSASSETS]: BaseDirectory not specified");
throw new Exception("Configuration error");
}
if (m_MainInstance)
{
string loader = assetConfig.GetString("DefaultAssetLoader", string.Empty);
if (loader != string.Empty)
{
m_AssetLoader = LoadPlugin<IAssetLoader>(loader);
string loaderArgs = assetConfig.GetString("AssetLoaderArgs", string.Empty);
m_log.InfoFormat("[FSASSETS]: Loading default asset set from {0}", loaderArgs);
m_AssetLoader.ForEachDefaultXmlAsset(loaderArgs,
delegate(AssetBase a)
{
Store(a, false);
});
}
m_WriterThread = new Thread(Writer);
m_WriterThread.Start();
m_StatsThread = new Thread(Stats);
m_StatsThread.Start();
}
m_log.Info("[FSASSETS]: FS asset service enabled");
}
private void Stats()
{
while (true)
{
Thread.Sleep(60000);
lock (m_statsLock)
{
if (m_readCount > 0)
{
double avg = (double)m_readTicks / (double)m_readCount;
// if (avg > 10000)
// Environment.Exit(0);
}
m_readCount = 0;
m_readTicks = 0;
m_missingAssets = 0;
m_missingAssetsFS = 0;
}
}
}
private void Writer()
{
m_log.Info("[FSASSETS]: Writer started");
while (true)
{
string[] files = Directory.GetFiles(m_SpoolDirectory);
if (files.Length > 0)
{
int tickCount = Environment.TickCount;
for (int i = 0 ; i < files.Length ; i++)
{
string hash = Path.GetFileNameWithoutExtension(files[i]);
string s = HashToFile(hash);
string diskFile = Path.Combine(m_FSBase, s);
Directory.CreateDirectory(Path.GetDirectoryName(diskFile));
try
{
byte[] data = File.ReadAllBytes(files[i]);
using (GZipStream gz = new GZipStream(new FileStream(diskFile + ".gz", FileMode.Create), CompressionMode.Compress))
{
gz.Write(data, 0, data.Length);
gz.Close();
}
File.Delete(files[i]);
//File.Move(files[i], diskFile);
}
catch(System.IO.IOException e)
{
if (e.Message.StartsWith("Win32 IO returned ERROR_ALREADY_EXISTS"))
File.Delete(files[i]);
else
throw;
}
}
int totalTicks = System.Environment.TickCount - tickCount;
if (totalTicks > 0) // Wrap?
{
m_log.InfoFormat("[FSASSETS]: Write cycle complete, {0} files, {1} ticks, avg {2:F2}", files.Length, totalTicks, (double)totalTicks / (double)files.Length);
}
}
Thread.Sleep(1000);
}
}
string GetSHA256Hash(byte[] data)
{
byte[] hash = SHA256.ComputeHash(data);
return BitConverter.ToString(hash).Replace("-", String.Empty);
}
public string HashToPath(string hash)
{
if (hash == null || hash.Length < 10)
return "junkyard";
return Path.Combine(hash.Substring(0, 3),
Path.Combine(hash.Substring(3, 3)));
/*
* The below is what core would normally use.
* This is modified to work in OSGrid, as seen
* above, because the SRAS data is structured
* that way.
*/
/*
return Path.Combine(hash.Substring(0, 2),
Path.Combine(hash.Substring(2, 2),
Path.Combine(hash.Substring(4, 2),
hash.Substring(6, 4))));
*/
}
private bool AssetExists(string hash)
{
string s = HashToFile(hash);
string diskFile = Path.Combine(m_FSBase, s);
if (File.Exists(diskFile + ".gz") || File.Exists(diskFile))
return true;
return false;
}
public virtual bool[] AssetsExist(string[] ids)
{
UUID[] uuid = Array.ConvertAll(ids, id => UUID.Parse(id));
return m_DataConnector.AssetsExist(uuid);
}
public string HashToFile(string hash)
{
return Path.Combine(HashToPath(hash), hash);
}
public virtual AssetBase Get(string id)
{
string hash;
return Get(id, out hash);
}
private AssetBase Get(string id, out string sha)
{
string hash = string.Empty;
int startTime = System.Environment.TickCount;
AssetMetadata metadata;
lock (m_readLock)
{
metadata = m_DataConnector.Get(id, out hash);
}
sha = hash;
if (metadata == null)
{
AssetBase asset = null;
if (m_FallbackService != null)
{
asset = m_FallbackService.Get(id);
if (asset != null)
{
asset.Metadata.ContentType =
SLUtil.SLAssetTypeToContentType((int)asset.Type);
sha = GetSHA256Hash(asset.Data);
m_log.InfoFormat("[FSASSETS]: Added asset {0} from fallback to local store", id);
Store(asset);
}
}
if (asset == null)
{
// m_log.InfoFormat("[FSASSETS]: Asset {0} not found", id);
m_missingAssets++;
}
return asset;
}
AssetBase newAsset = new AssetBase();
newAsset.Metadata = metadata;
try
{
newAsset.Data = GetFsData(hash);
if (newAsset.Data.Length == 0)
{
AssetBase asset = null;
if (m_FallbackService != null)
{
asset = m_FallbackService.Get(id);
if (asset != null)
{
asset.Metadata.ContentType =
SLUtil.SLAssetTypeToContentType((int)asset.Type);
sha = GetSHA256Hash(asset.Data);
m_log.InfoFormat("[FSASSETS]: Added asset {0} from fallback to local store", id);
Store(asset);
}
}
if (asset == null)
m_missingAssetsFS++;
// m_log.InfoFormat("[FSASSETS]: Asset {0}, hash {1} not found in FS", id, hash);
else
{
// Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
// Fix bad assets before sending them elsewhere
if (asset.Type == (int)AssetType.Object && asset.Data != null)
{
string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
asset.Data = Utils.StringToBytes(xml);
}
return asset;
}
}
lock (m_statsLock)
{
m_readTicks += Environment.TickCount - startTime;
m_readCount++;
}
// Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
// Fix bad assets before sending them elsewhere
if (newAsset.Type == (int)AssetType.Object && newAsset.Data != null)
{
string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(newAsset.Data));
newAsset.Data = Utils.StringToBytes(xml);
}
return newAsset;
}
catch (Exception exception)
{
m_log.Error(exception.ToString());
Thread.Sleep(5000);
Environment.Exit(1);
return null;
}
}
public virtual AssetMetadata GetMetadata(string id)
{
string hash;
return m_DataConnector.Get(id, out hash);
}
public virtual byte[] GetData(string id)
{
string hash;
if (m_DataConnector.Get(id, out hash) == null)
return null;
return GetFsData(hash);
}
public bool Get(string id, Object sender, AssetRetrieved handler)
{
AssetBase asset = Get(id);
handler(id, sender, asset);
return true;
}
public byte[] GetFsData(string hash)
{
string spoolFile = Path.Combine(m_SpoolDirectory, hash + ".asset");
if (File.Exists(spoolFile))
{
try
{
byte[] content = File.ReadAllBytes(spoolFile);
return content;
}
catch
{
}
}
string file = HashToFile(hash);
string diskFile = Path.Combine(m_FSBase, file);
if (File.Exists(diskFile + ".gz"))
{
try
{
using (GZipStream gz = new GZipStream(new FileStream(diskFile + ".gz", FileMode.Open, FileAccess.Read), CompressionMode.Decompress))
{
using (MemoryStream ms = new MemoryStream())
{
byte[] data = new byte[32768];
int bytesRead;
do
{
bytesRead = gz.Read(data, 0, 32768);
if (bytesRead > 0)
ms.Write(data, 0, bytesRead);
} while (bytesRead > 0);
return ms.ToArray();
}
}
}
catch (Exception)
{
return new Byte[0];
}
}
else if (File.Exists(diskFile))
{
try
{
byte[] content = File.ReadAllBytes(diskFile);
return content;
}
catch
{
}
}
return new Byte[0];
}
public virtual string Store(AssetBase asset)
{
return Store(asset, false);
}
private string Store(AssetBase asset, bool force)
{
int tickCount = Environment.TickCount;
string hash = GetSHA256Hash(asset.Data);
if (!AssetExists(hash))
{
string tempFile = Path.Combine(Path.Combine(m_SpoolDirectory, "spool"), hash + ".asset");
string finalFile = Path.Combine(m_SpoolDirectory, hash + ".asset");
if (!File.Exists(finalFile))
{
// Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
// Fix bad assets before storing on this server
if (asset.Type == (int)AssetType.Object && asset.Data != null)
{
string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
asset.Data = Utils.StringToBytes(xml);
}
FileStream fs = File.Create(tempFile);
fs.Write(asset.Data, 0, asset.Data.Length);
fs.Close();
File.Move(tempFile, finalFile);
}
}
if (asset.ID == string.Empty)
{
if (asset.FullID == UUID.Zero)
{
asset.FullID = UUID.Random();
}
asset.ID = asset.FullID.ToString();
}
else if (asset.FullID == UUID.Zero)
{
UUID uuid = UUID.Zero;
if (UUID.TryParse(asset.ID, out uuid))
{
asset.FullID = uuid;
}
else
{
asset.FullID = UUID.Random();
}
}
if (!m_DataConnector.Store(asset.Metadata, hash))
{
return UUID.Zero.ToString();
}
else
{
return asset.ID;
}
}
public bool UpdateContent(string id, byte[] data)
{
return false;
// string oldhash;
// AssetMetadata meta = m_DataConnector.Get(id, out oldhash);
//
// if (meta == null)
// return false;
//
// AssetBase asset = new AssetBase();
// asset.Metadata = meta;
// asset.Data = data;
//
// Store(asset);
//
// return true;
}
public virtual bool Delete(string id)
{
m_DataConnector.Delete(id);
return true;
}
private void HandleShowAssets(string module, string[] args)
{
int num = m_DataConnector.Count();
MainConsole.Instance.Output(string.Format("Total asset count: {0}", num));
}
private void HandleShowDigest(string module, string[] args)
{
if (args.Length < 3)
{
MainConsole.Instance.Output("Syntax: show digest <ID>");
return;
}
string hash;
AssetBase asset = Get(args[2], out hash);
if (asset == null || asset.Data.Length == 0)
{
MainConsole.Instance.Output("Asset not found");
return;
}
int i;
MainConsole.Instance.Output(String.Format("Name: {0}", asset.Name));
MainConsole.Instance.Output(String.Format("Description: {0}", asset.Description));
MainConsole.Instance.Output(String.Format("Type: {0}", asset.Type));
MainConsole.Instance.Output(String.Format("Content-type: {0}", asset.Metadata.ContentType));
MainConsole.Instance.Output(String.Format("Flags: {0}", asset.Metadata.Flags.ToString()));
MainConsole.Instance.Output(String.Format("FS file: {0}", HashToFile(hash)));
for (i = 0 ; i < 5 ; i++)
{
int off = i * 16;
if (asset.Data.Length <= off)
break;
int len = 16;
if (asset.Data.Length < off + len)
len = asset.Data.Length - off;
byte[] line = new byte[len];
Array.Copy(asset.Data, off, line, 0, len);
string text = BitConverter.ToString(line);
MainConsole.Instance.Output(String.Format("{0:x4}: {1}", off, text));
}
}
private void HandleDeleteAsset(string module, string[] args)
{
if (args.Length < 3)
{
MainConsole.Instance.Output("Syntax: delete asset <ID>");
return;
}
AssetBase asset = Get(args[2]);
if (asset == null || asset.Data.Length == 0)
{
MainConsole.Instance.Output("Asset not found");
return;
}
m_DataConnector.Delete(args[2]);
MainConsole.Instance.Output("Asset deleted");
}
private void HandleImportAssets(string module, string[] args)
{
bool force = false;
if (args[0] == "force")
{
force = true;
List<string> list = new List<string>(args);
list.RemoveAt(0);
args = list.ToArray();
}
if (args.Length < 3)
{
MainConsole.Instance.Output("Syntax: import <conn> <table> [<start> <count>]");
}
else
{
string conn = args[1];
string table = args[2];
int start = 0;
int count = -1;
if (args.Length > 3)
{
start = Convert.ToInt32(args[3]);
}
if (args.Length > 4)
{
count = Convert.ToInt32(args[4]);
}
m_DataConnector.Import(conn, table, start, count, force, new FSStoreDelegate(Store));
}
}
public AssetBase GetCached(string id)
{
return Get(id);
}
}
}
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