/* * 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.Data; using System.Reflection; using System.Collections.Generic; using log4net; using MySql.Data.MySqlClient; using OpenMetaverse; using OpenSim.Framework; using OpenSim.Data; namespace OpenSim.Data.MySQL { /// /// A MySQL Interface for the Asset Server /// public class MySQLAssetData : AssetDataBase { private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); private string m_connectionString; private object m_dbLock = new object(); protected virtual Assembly Assembly { get { return GetType().Assembly; } } #region IPlugin Members public override string Version { get { return "1.0.0.0"; } } /// /// Initialises Asset interface /// /// /// Loads and initialises the MySQL storage plugin. /// Warns and uses the obsolete mysql_connection.ini if connect string is empty. /// Check for migration /// /// /// /// connect string public override void Initialise(string connect) { m_connectionString = connect; using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); Migration m = new Migration(dbcon, Assembly, "AssetStore"); m.Update(); } } public override void Initialise() { throw new NotImplementedException(); } public override void Dispose() { } /// /// The name of this DB provider /// override public string Name { get { return "MySQL Asset storage engine"; } } #endregion #region IAssetDataPlugin Members /// /// Fetch Asset from database /// /// Asset UUID to fetch /// Return the asset /// On failure : throw an exception and attempt to reconnect to database override public AssetBase GetAsset(UUID assetID) { AssetBase asset = null; lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand( "SELECT name, description, assetType, local, temporary, asset_flags, CreatorID, data FROM assets WHERE id=?id", dbcon)) { cmd.Parameters.AddWithValue("?id", assetID.ToString()); try { using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow)) { if (dbReader.Read()) { asset = new AssetBase(assetID, (string)dbReader["name"], (sbyte)dbReader["assetType"], dbReader["CreatorID"].ToString()); asset.Data = (byte[])dbReader["data"]; asset.Description = (string)dbReader["description"]; string local = dbReader["local"].ToString(); if (local.Equals("1") || local.Equals("true", StringComparison.InvariantCultureIgnoreCase)) asset.Local = true; else asset.Local = false; asset.Temporary = Convert.ToBoolean(dbReader["temporary"]); asset.Flags = (AssetFlags)Convert.ToInt32(dbReader["asset_flags"]); } } } catch (Exception e) { m_log.Error( string.Format("[ASSETS DB]: MySql failure fetching asset {0}. Exception ", assetID), e); } } } } return asset; } /// /// Create an asset in database, or update it if existing. /// /// Asset UUID to create /// On failure : Throw an exception and attempt to reconnect to database override public void StoreAsset(AssetBase asset) { lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand( "replace INTO assets(id, name, description, assetType, local, temporary, create_time, access_time, asset_flags, CreatorID, data)" + "VALUES(?id, ?name, ?description, ?assetType, ?local, ?temporary, ?create_time, ?access_time, ?asset_flags, ?CreatorID, ?data)", dbcon)) { string assetName = asset.Name; if (asset.Name.Length > AssetBase.MAX_ASSET_NAME) { assetName = asset.Name.Substring(0, AssetBase.MAX_ASSET_NAME); m_log.WarnFormat( "[ASSET DB]: Name '{0}' for asset {1} truncated from {2} to {3} characters on add", asset.Name, asset.ID, asset.Name.Length, assetName.Length); } string assetDescription = asset.Description; if (asset.Description.Length > AssetBase.MAX_ASSET_DESC) { assetDescription = asset.Description.Substring(0, AssetBase.MAX_ASSET_DESC); m_log.WarnFormat( "[ASSET DB]: Description '{0}' for asset {1} truncated from {2} to {3} characters on add", asset.Description, asset.ID, asset.Description.Length, assetDescription.Length); } try { using (cmd) { // create unix epoch time int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow); cmd.Parameters.AddWithValue("?id", asset.ID); cmd.Parameters.AddWithValue("?name", assetName); cmd.Parameters.AddWithValue("?description", assetDescription); cmd.Parameters.AddWithValue("?assetType", asset.Type); cmd.Parameters.AddWithValue("?local", asset.Local); cmd.Parameters.AddWithValue("?temporary", asset.Temporary); cmd.Parameters.AddWithValue("?create_time", now); cmd.Parameters.AddWithValue("?access_time", now); cmd.Parameters.AddWithValue("?CreatorID", asset.Metadata.CreatorID); cmd.Parameters.AddWithValue("?asset_flags", (int)asset.Flags); cmd.Parameters.AddWithValue("?data", asset.Data); cmd.ExecuteNonQuery(); } } catch (Exception e) { m_log.Error( string.Format( "[ASSET DB]: MySQL failure creating asset {0} with name {1}. Exception ", asset.FullID, asset.Name) , e); } } } } } private void UpdateAccessTime(AssetBase asset) { lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand("update assets set access_time=?access_time where id=?id", dbcon)) { try { using (cmd) { // create unix epoch time int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow); cmd.Parameters.AddWithValue("?id", asset.ID); cmd.Parameters.AddWithValue("?access_time", now); cmd.ExecuteNonQuery(); } } catch (Exception e) { m_log.Error( string.Format( "[ASSETS DB]: Failure updating access_time for asset {0} with name {1}. Exception ", asset.FullID, asset.Name), e); } } } } } /// /// Check if the assets exist in the database. /// /// The assets' IDs /// For each asset: true if it exists, false otherwise public override bool[] AssetsExist(UUID[] uuids) { if (uuids.Length == 0) return new bool[0]; HashSet exist = new HashSet(); string ids = "'" + string.Join("','", uuids) + "'"; string sql = string.Format("SELECT id FROM assets WHERE id IN ({0})", ids); lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand(sql, dbcon)) { using (MySqlDataReader dbReader = cmd.ExecuteReader()) { while (dbReader.Read()) { UUID id = DBGuid.FromDB(dbReader["id"]); exist.Add(id); } } } } } bool[] results = new bool[uuids.Length]; for (int i = 0; i < uuids.Length; i++) results[i] = exist.Contains(uuids[i]); return results; } /// /// Returns a list of AssetMetadata objects. The list is a subset of /// the entire data set offset by containing /// elements. /// /// The number of results to discard from the total data set. /// The number of rows the returned list should contain. /// A list of AssetMetadata objects. public override List FetchAssetMetadataSet(int start, int count) { List retList = new List(count); lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand( "SELECT name,description,assetType,temporary,id,asset_flags,CreatorID FROM assets LIMIT ?start, ?count", dbcon)) { cmd.Parameters.AddWithValue("?start", start); cmd.Parameters.AddWithValue("?count", count); try { using (MySqlDataReader dbReader = cmd.ExecuteReader()) { while (dbReader.Read()) { AssetMetadata metadata = new AssetMetadata(); metadata.Name = (string)dbReader["name"]; metadata.Description = (string)dbReader["description"]; metadata.Type = (sbyte)dbReader["assetType"]; metadata.Temporary = Convert.ToBoolean(dbReader["temporary"]); // Not sure if this is correct. metadata.Flags = (AssetFlags)Convert.ToInt32(dbReader["asset_flags"]); metadata.FullID = DBGuid.FromDB(dbReader["id"]); metadata.CreatorID = dbReader["CreatorID"].ToString(); // Current SHA1s are not stored/computed. metadata.SHA1 = new byte[] { }; retList.Add(metadata); } } } catch (Exception e) { m_log.Error( string.Format( "[ASSETS DB]: MySql failure fetching asset set from {0}, count {1}. Exception ", start, count), e); } } } } return retList; } public override bool Delete(string id) { lock (m_dbLock) { using (MySqlConnection dbcon = new MySqlConnection(m_connectionString)) { dbcon.Open(); using (MySqlCommand cmd = new MySqlCommand("delete from assets where id=?id", dbcon)) { cmd.Parameters.AddWithValue("?id", id); cmd.ExecuteNonQuery(); } } } return true; } #endregion } }