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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.Reflection;
using System.Collections.Generic;
using System.Data;
using OpenSim.Framework;
using OpenSim.Framework.Console;
using log4net;
using MySql.Data.MySqlClient;
using OpenMetaverse;
namespace OpenSim.Data.MySQL
{
public class MySQLFSAssetData : IFSAssetDataPlugin
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
protected string m_ConnectionString;
protected string m_Table;
/// <summary>
/// Number of days that must pass before we update the access time on an asset when it has been fetched
/// Config option to change this is "DaysBetweenAccessTimeUpdates"
/// </summary>
private int DaysBetweenAccessTimeUpdates = 0;
protected virtual Assembly Assembly
{
get { return GetType().Assembly; }
}
public MySQLFSAssetData()
{
}
#region IPlugin Members
public string Version { get { return "1.0.0.0"; } }
// Loads and initialises the MySQL storage plugin and checks for migrations
public void Initialise(string connect, string realm, int UpdateAccessTime)
{
m_ConnectionString = connect;
m_Table = realm;
DaysBetweenAccessTimeUpdates = UpdateAccessTime;
try
{
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
conn.Open();
Migration m = new Migration(conn, Assembly, "FSAssetStore");
m.Update();
}
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Can't connect to database: {0}", e.Message.ToString());
}
}
public void Initialise()
{
throw new NotImplementedException();
}
public void Dispose() { }
public string Name
{
get { return "MySQL FSAsset storage engine"; }
}
#endregion
private bool ExecuteNonQuery(MySqlCommand cmd)
{
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
try
{
conn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Database open failed with {0}", e.ToString());
return false;
}
cmd.Connection = conn;
try
{
cmd.ExecuteNonQuery();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Query {0} failed with {1}", cmd.CommandText, e.ToString());
return false;
}
}
return true;
}
#region IFSAssetDataPlugin Members
public AssetMetadata Get(string id, out string hash)
{
hash = String.Empty;
AssetMetadata meta = new AssetMetadata();
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
try
{
conn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Database open failed with {0}", e.ToString());
return null;
}
using (MySqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = String.Format("select id, name, description, type, hash, create_time, asset_flags, access_time from {0} where id = ?id", m_Table);
cmd.Parameters.AddWithValue("?id", id);
using (IDataReader reader = cmd.ExecuteReader())
{
if (!reader.Read())
return null;
hash = reader["hash"].ToString();
meta.ID = id;
meta.FullID = new UUID(id);
meta.Name = reader["name"].ToString();
meta.Description = reader["description"].ToString();
meta.Type = (sbyte)Convert.ToInt32(reader["type"]);
meta.ContentType = SLUtil.SLAssetTypeToContentType(meta.Type);
meta.CreationDate = Util.ToDateTime(Convert.ToInt32(reader["create_time"]));
meta.Flags = (AssetFlags)Convert.ToInt32(reader["asset_flags"]);
int AccessTime = Convert.ToInt32(reader["access_time"]);
UpdateAccessTime(id, AccessTime);
}
}
}
return meta;
}
private void UpdateAccessTime(string AssetID, int AccessTime)
{
// Reduce DB work by only updating access time if asset hasn't recently been accessed
// 0 By Default, Config option is "DaysBetweenAccessTimeUpdates"
if (DaysBetweenAccessTimeUpdates > 0 && (DateTime.UtcNow - Utils.UnixTimeToDateTime(AccessTime)).TotalDays < DaysBetweenAccessTimeUpdates)
return;
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
try
{
conn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Database open failed with {0}", e.ToString());
return;
}
using (MySqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = String.Format("UPDATE {0} SET `access_time` = UNIX_TIMESTAMP() WHERE `id` = ?id", m_Table);
cmd.Parameters.AddWithValue("?id", AssetID);
cmd.ExecuteNonQuery();
}
}
}
public bool Store(AssetMetadata meta, string hash)
{
try
{
string oldhash;
AssetMetadata existingAsset = Get(meta.ID, out oldhash);
using (MySqlCommand cmd = new MySqlCommand())
{
cmd.Parameters.AddWithValue("?id", meta.ID);
cmd.Parameters.AddWithValue("?name", meta.Name);
cmd.Parameters.AddWithValue("?description", meta.Description);
cmd.Parameters.AddWithValue("?type", meta.Type.ToString());
// cmd.Parameters.AddWithValue("?type", meta.Type);
cmd.Parameters.AddWithValue("?hash", hash);
cmd.Parameters.AddWithValue("?asset_flags", meta.Flags);
if (existingAsset == null)
{
cmd.CommandText = String.Format("insert into {0} (id, name, description, type, hash, asset_flags, create_time, access_time) values ( ?id, ?name, ?description, ?type, ?hash, ?asset_flags, UNIX_TIMESTAMP(), UNIX_TIMESTAMP())", m_Table);
ExecuteNonQuery(cmd);
return true;
}
//cmd.CommandText = String.Format("update {0} set hash = ?hash, access_time = UNIX_TIMESTAMP() where id = ?id", m_Table);
//ExecuteNonQuery(cmd);
}
// return false;
// if the asset already exits
// assume it was already correctly stored
// or regions will keep retry.
return true;
}
catch(Exception e)
{
m_log.Error("[FSAssets] Failed to store asset with ID " + meta.ID);
m_log.Error(e.ToString());
return false;
}
}
/// <summary>
/// Check if the assets exist in the database.
/// </summary>
/// <param name="uuids">The asset UUID's</param>
/// <returns>For each asset: true if it exists, false otherwise</returns>
public bool[] AssetsExist(UUID[] uuids)
{
if (uuids.Length == 0)
return new bool[0];
bool[] results = new bool[uuids.Length];
for (int i = 0; i < uuids.Length; i++)
results[i] = false;
HashSet<UUID> exists = new HashSet<UUID>();
string ids = "'" + string.Join("','", uuids) + "'";
string sql = string.Format("select id from {1} where id in ({0})", ids, m_Table);
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
try
{
conn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Failed to open database: {0}", e.ToString());
return results;
}
using (MySqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = sql;
using (MySqlDataReader dbReader = cmd.ExecuteReader())
{
while (dbReader.Read())
{
UUID id = DBGuid.FromDB(dbReader["ID"]);
exists.Add(id);
}
}
}
}
for (int i = 0; i < uuids.Length; i++)
results[i] = exists.Contains(uuids[i]);
return results;
}
public int Count()
{
int count = 0;
using (MySqlConnection conn = new MySqlConnection(m_ConnectionString))
{
try
{
conn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Failed to open database: {0}", e.ToString());
return 0;
}
using(MySqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = String.Format("select count(*) as count from {0}",m_Table);
using (IDataReader reader = cmd.ExecuteReader())
{
reader.Read();
count = Convert.ToInt32(reader["count"]);
}
}
}
return count;
}
public bool Delete(string id)
{
using(MySqlCommand cmd = new MySqlCommand())
{
cmd.CommandText = String.Format("delete from {0} where id = ?id",m_Table);
cmd.Parameters.AddWithValue("?id", id);
ExecuteNonQuery(cmd);
}
return true;
}
public void Import(string conn, string table, int start, int count, bool force, FSStoreDelegate store)
{
int imported = 0;
using (MySqlConnection importConn = new MySqlConnection(conn))
{
try
{
importConn.Open();
}
catch (MySqlException e)
{
m_log.ErrorFormat("[FSASSETS]: Can't connect to database: {0}",
e.Message.ToString());
return;
}
using (MySqlCommand cmd = importConn.CreateCommand())
{
string limit = String.Empty;
if (count != -1)
{
limit = String.Format(" limit {0},{1}", start, count);
}
cmd.CommandText = String.Format("select * from {0}{1}", table, limit);
MainConsole.Instance.Output("Querying database");
using (IDataReader reader = cmd.ExecuteReader())
{
MainConsole.Instance.Output("Reading data");
while (reader.Read())
{
if ((imported % 100) == 0)
{
MainConsole.Instance.Output(String.Format("{0} assets imported so far", imported));
}
AssetBase asset = new AssetBase();
AssetMetadata meta = new AssetMetadata();
meta.ID = reader["id"].ToString();
meta.FullID = new UUID(meta.ID);
meta.Name = reader["name"].ToString();
meta.Description = reader["description"].ToString();
meta.Type = (sbyte)Convert.ToInt32(reader["assetType"]);
meta.ContentType = SLUtil.SLAssetTypeToContentType(meta.Type);
meta.CreationDate = Util.ToDateTime(Convert.ToInt32(reader["create_time"]));
asset.Metadata = meta;
asset.Data = (byte[])reader["data"];
store(asset, force);
imported++;
}
}
}
}
MainConsole.Instance.Output(String.Format("Import done, {0} assets imported", imported));
}
#endregion
}
}
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