318 lines
13 KiB
C#
318 lines
13 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Data;
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using System.Reflection;
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using System.Collections.Generic;
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using OpenMetaverse;
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using log4net;
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using OpenSim.Framework;
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using Npgsql;
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using NpgsqlTypes;
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namespace OpenSim.Data.PGSQL
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{
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/// <summary>
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/// A PGSQL Interface for the Asset server
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/// </summary>
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public class PGSQLAssetData : AssetDataBase
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{
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private const string _migrationStore = "AssetStore";
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private long m_ticksToEpoch;
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/// <summary>
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/// Database manager
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/// </summary>
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private PGSQLManager m_database;
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private string m_connectionString;
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protected virtual Assembly Assembly
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{
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get { return GetType().Assembly; }
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}
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#region IPlugin Members
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override public void Dispose() { }
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/// <summary>
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/// <para>Initialises asset interface</para>
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/// </summary>
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// [Obsolete("Cannot be default-initialized!")]
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override public void Initialise()
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{
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m_log.Info("[PGSQLAssetData]: " + Name + " cannot be default-initialized!");
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throw new PluginNotInitialisedException(Name);
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}
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/// <summary>
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/// Initialises asset interface
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/// </summary>
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/// <para>
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/// a string instead of file, if someone writes the support
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/// </para>
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/// <param name="connectionString">connect string</param>
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override public void Initialise(string connectionString)
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{
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m_ticksToEpoch = new System.DateTime(1970, 1, 1).Ticks;
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m_database = new PGSQLManager(connectionString);
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m_connectionString = connectionString;
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//New migration to check for DB changes
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m_database.CheckMigration(_migrationStore);
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}
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/// <summary>
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/// Database provider version.
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/// </summary>
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override public string Version
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{
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get { return m_database.getVersion(); }
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}
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/// <summary>
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/// The name of this DB provider.
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/// </summary>
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override public string Name
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{
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get { return "PGSQL Asset storage engine"; }
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}
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#endregion
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#region IAssetDataPlugin Members
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/// <summary>
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/// Fetch Asset from m_database
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/// </summary>
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/// <param name="assetID">the asset UUID</param>
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/// <returns></returns>
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override public AssetBase GetAsset(UUID assetID)
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{
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string sql = "SELECT * FROM assets WHERE id = :id";
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using (NpgsqlConnection conn = new NpgsqlConnection(m_connectionString))
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using (NpgsqlCommand cmd = new NpgsqlCommand(sql, conn))
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{
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cmd.Parameters.Add(m_database.CreateParameter("id", assetID));
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conn.Open();
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using (NpgsqlDataReader reader = cmd.ExecuteReader())
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{
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if (reader.Read())
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{
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AssetBase asset = new AssetBase(
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DBGuid.FromDB(reader["id"]),
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(string)reader["name"],
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Convert.ToSByte(reader["assetType"]),
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reader["creatorid"].ToString()
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);
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// Region Main
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asset.Description = (string)reader["description"];
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asset.Local = Convert.ToBoolean(reader["local"]);
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asset.Temporary = Convert.ToBoolean(reader["temporary"]);
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asset.Flags = (AssetFlags)(Convert.ToInt32(reader["asset_flags"]));
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asset.Data = (byte[])reader["data"];
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return asset;
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}
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return null; // throw new Exception("No rows to return");
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}
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}
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}
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/// <summary>
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/// Create asset in m_database
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/// </summary>
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/// <param name="asset">the asset</param>
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override public bool StoreAsset(AssetBase asset)
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{
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string sql =
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@"UPDATE assets set name = :name, description = :description, " + "\"assetType\" " + @" = :assetType,
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local = :local, temporary = :temporary, creatorid = :creatorid, data = :data
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WHERE id=:id;
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INSERT INTO assets
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(id, name, description, " + "\"assetType\" " + @", local,
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temporary, create_time, access_time, creatorid, asset_flags, data)
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Select :id, :name, :description, :assetType, :local,
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:temporary, :create_time, :access_time, :creatorid, :asset_flags, :data
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Where not EXISTS(SELECT * FROM assets WHERE id=:id)
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";
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string assetName = asset.Name;
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if (asset.Name.Length > AssetBase.MAX_ASSET_NAME)
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{
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assetName = asset.Name.Substring(0, AssetBase.MAX_ASSET_NAME);
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m_log.WarnFormat(
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"[ASSET DB]: Name '{0}' for asset {1} truncated from {2} to {3} characters on add",
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asset.Name, asset.ID, asset.Name.Length, assetName.Length);
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}
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string assetDescription = asset.Description;
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if (asset.Description.Length > AssetBase.MAX_ASSET_DESC)
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{
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assetDescription = asset.Description.Substring(0, AssetBase.MAX_ASSET_DESC);
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m_log.WarnFormat(
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"[ASSET DB]: Description '{0}' for asset {1} truncated from {2} to {3} characters on add",
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asset.Description, asset.ID, asset.Description.Length, assetDescription.Length);
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}
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using (NpgsqlConnection conn = new NpgsqlConnection(m_connectionString))
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using (NpgsqlCommand command = new NpgsqlCommand(sql, conn))
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{
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int now = (int)((System.DateTime.Now.Ticks - m_ticksToEpoch) / 10000000);
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command.Parameters.Add(m_database.CreateParameter("id", asset.FullID));
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command.Parameters.Add(m_database.CreateParameter("name", assetName));
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command.Parameters.Add(m_database.CreateParameter("description", assetDescription));
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command.Parameters.Add(m_database.CreateParameter("assetType", asset.Type));
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command.Parameters.Add(m_database.CreateParameter("local", asset.Local));
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command.Parameters.Add(m_database.CreateParameter("temporary", asset.Temporary));
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command.Parameters.Add(m_database.CreateParameter("access_time", now));
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command.Parameters.Add(m_database.CreateParameter("create_time", now));
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command.Parameters.Add(m_database.CreateParameter("asset_flags", (int)asset.Flags));
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command.Parameters.Add(m_database.CreateParameter("creatorid", asset.Metadata.CreatorID));
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command.Parameters.Add(m_database.CreateParameter("data", asset.Data));
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conn.Open();
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try
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{
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command.ExecuteNonQuery();
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}
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catch(Exception e)
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{
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m_log.Error("[ASSET DB]: Error storing item :" + e.Message + " sql "+sql);
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}
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}
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return true;
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}
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// Commented out since currently unused - this probably should be called in GetAsset()
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// private void UpdateAccessTime(AssetBase asset)
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// {
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// using (AutoClosingSqlCommand cmd = m_database.Query("UPDATE assets SET access_time = :access_time WHERE id=:id"))
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// {
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// int now = (int)((System.DateTime.Now.Ticks - m_ticksToEpoch) / 10000000);
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// cmd.Parameters.AddWithValue(":id", asset.FullID.ToString());
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// cmd.Parameters.AddWithValue(":access_time", now);
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// try
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// {
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// cmd.ExecuteNonQuery();
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// }
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// catch (Exception e)
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// {
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// m_log.Error(e.ToString());
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// }
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// }
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// }
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/// <summary>
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/// Check if the assets exist in the database.
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/// </summary>
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/// <param name="uuids">The assets' IDs</param>
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/// <returns>For each asset: true if it exists, false otherwise</returns>
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public override bool[] AssetsExist(UUID[] uuids)
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{
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if (uuids.Length == 0)
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return new bool[0];
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HashSet<UUID> exist = new HashSet<UUID>();
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string ids = "'" + string.Join("','", uuids) + "'";
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string sql = string.Format("SELECT id FROM assets WHERE id IN ({0})", ids);
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using (NpgsqlConnection conn = new NpgsqlConnection(m_connectionString))
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using (NpgsqlCommand cmd = new NpgsqlCommand(sql, conn))
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{
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conn.Open();
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using (NpgsqlDataReader reader = cmd.ExecuteReader())
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{
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while (reader.Read())
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{
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UUID id = DBGuid.FromDB(reader["id"]);
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exist.Add(id);
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}
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}
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}
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bool[] results = new bool[uuids.Length];
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for (int i = 0; i < uuids.Length; i++)
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results[i] = exist.Contains(uuids[i]);
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return results;
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}
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/// <summary>
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/// Returns a list of AssetMetadata objects. The list is a subset of
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/// the entire data set offset by <paramref name="start" /> containing
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/// <paramref name="count" /> elements.
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/// </summary>
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/// <param name="start">The number of results to discard from the total data set.</param>
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/// <param name="count">The number of rows the returned list should contain.</param>
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/// <returns>A list of AssetMetadata objects.</returns>
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public override List<AssetMetadata> FetchAssetMetadataSet(int start, int count)
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{
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List<AssetMetadata> retList = new List<AssetMetadata>(count);
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string sql = @" SELECT id, name, description, " + "\"assetType\"" + @", temporary, creatorid
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FROM assets
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order by id
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limit :stop
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offset :start;";
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using (NpgsqlConnection conn = new NpgsqlConnection(m_connectionString))
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using (NpgsqlCommand cmd = new NpgsqlCommand(sql, conn))
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{
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cmd.Parameters.Add(m_database.CreateParameter("start", start));
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cmd.Parameters.Add(m_database.CreateParameter("stop", start + count - 1));
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conn.Open();
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using (NpgsqlDataReader reader = cmd.ExecuteReader())
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{
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while (reader.Read())
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{
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AssetMetadata metadata = new AssetMetadata();
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metadata.FullID = DBGuid.FromDB(reader["id"]);
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metadata.Name = (string)reader["name"];
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metadata.Description = (string)reader["description"];
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metadata.Type = Convert.ToSByte(reader["assetType"]);
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metadata.Temporary = Convert.ToBoolean(reader["temporary"]);
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metadata.CreatorID = (string)reader["creatorid"];
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retList.Add(metadata);
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}
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}
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}
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return retList;
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}
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public override bool Delete(string id)
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{
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return false;
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}
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#endregion
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}
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}
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