clockwerk-opensim – Blame information for rev 1

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1 vero 1 /*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27  
28 using System;
29 using System.Data;
30 using System.Reflection;
31 using System.Collections.Generic;
32 using log4net;
33 using MySql.Data.MySqlClient;
34 using OpenMetaverse;
35 using OpenSim.Framework;
36 using OpenSim.Data;
37  
38 namespace OpenSim.Data.MySQL
39 {
40 /// <summary>
41 /// A MySQL Interface for the Asset Server
42 /// </summary>
43 public class MySQLAssetData : AssetDataBase
44 {
45 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
46  
47 private string m_connectionString;
48  
49 protected virtual Assembly Assembly
50 {
51 get { return GetType().Assembly; }
52 }
53  
54 #region IPlugin Members
55  
56 public override string Version { get { return "1.0.0.0"; } }
57  
58 /// <summary>
59 /// <para>Initialises Asset interface</para>
60 /// <para>
61 /// <list type="bullet">
62 /// <item>Loads and initialises the MySQL storage plugin.</item>
63 /// <item>Warns and uses the obsolete mysql_connection.ini if connect string is empty.</item>
64 /// <item>Check for migration</item>
65 /// </list>
66 /// </para>
67 /// </summary>
68 /// <param name="connect">connect string</param>
69 public override void Initialise(string connect)
70 {
71 m_connectionString = connect;
72  
73 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
74 {
75 dbcon.Open();
76 Migration m = new Migration(dbcon, Assembly, "AssetStore");
77 m.Update();
78 }
79 }
80  
81 public override void Initialise()
82 {
83 throw new NotImplementedException();
84 }
85  
86 public override void Dispose() { }
87  
88 /// <summary>
89 /// The name of this DB provider
90 /// </summary>
91 override public string Name
92 {
93 get { return "MySQL Asset storage engine"; }
94 }
95  
96 #endregion
97  
98 #region IAssetDataPlugin Members
99  
100 /// <summary>
101 /// Fetch Asset <paramref name="assetID"/> from database
102 /// </summary>
103 /// <param name="assetID">Asset UUID to fetch</param>
104 /// <returns>Return the asset</returns>
105 /// <remarks>On failure : throw an exception and attempt to reconnect to database</remarks>
106 override public AssetBase GetAsset(UUID assetID)
107 {
108 AssetBase asset = null;
109  
110 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
111 {
112 dbcon.Open();
113  
114 using (MySqlCommand cmd = new MySqlCommand(
115 "SELECT name, description, assetType, local, temporary, asset_flags, CreatorID, data FROM assets WHERE id=?id",
116 dbcon))
117 {
118 cmd.Parameters.AddWithValue("?id", assetID.ToString());
119  
120 try
121 {
122 using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
123 {
124 if (dbReader.Read())
125 {
126 asset = new AssetBase(assetID, (string)dbReader["name"], (sbyte)dbReader["assetType"], dbReader["CreatorID"].ToString());
127 asset.Data = (byte[])dbReader["data"];
128 asset.Description = (string)dbReader["description"];
129  
130 string local = dbReader["local"].ToString();
131 if (local.Equals("1") || local.Equals("true", StringComparison.InvariantCultureIgnoreCase))
132 asset.Local = true;
133 else
134 asset.Local = false;
135  
136 asset.Temporary = Convert.ToBoolean(dbReader["temporary"]);
137 asset.Flags = (AssetFlags)Convert.ToInt32(dbReader["asset_flags"]);
138 }
139 }
140 }
141 catch (Exception e)
142 {
143 m_log.Error(
144 string.Format("[ASSETS DB]: MySql failure fetching asset {0}. Exception ", assetID), e);
145 }
146 }
147 }
148  
149 return asset;
150 }
151  
152 /// <summary>
153 /// Create an asset in database, or update it if existing.
154 /// </summary>
155 /// <param name="asset">Asset UUID to create</param>
156 /// <remarks>On failure : Throw an exception and attempt to reconnect to database</remarks>
157 override public void StoreAsset(AssetBase asset)
158 {
159 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
160 {
161 dbcon.Open();
162  
163 using (MySqlCommand cmd =
164 new MySqlCommand(
165 "replace INTO assets(id, name, description, assetType, local, temporary, create_time, access_time, asset_flags, CreatorID, data)" +
166 "VALUES(?id, ?name, ?description, ?assetType, ?local, ?temporary, ?create_time, ?access_time, ?asset_flags, ?CreatorID, ?data)",
167 dbcon))
168 {
169 string assetName = asset.Name;
170 if (asset.Name.Length > AssetBase.MAX_ASSET_NAME)
171 {
172 assetName = asset.Name.Substring(0, AssetBase.MAX_ASSET_NAME);
173 m_log.WarnFormat(
174 "[ASSET DB]: Name '{0}' for asset {1} truncated from {2} to {3} characters on add",
175 asset.Name, asset.ID, asset.Name.Length, assetName.Length);
176 }
177  
178 string assetDescription = asset.Description;
179 if (asset.Description.Length > AssetBase.MAX_ASSET_DESC)
180 {
181 assetDescription = asset.Description.Substring(0, AssetBase.MAX_ASSET_DESC);
182 m_log.WarnFormat(
183 "[ASSET DB]: Description '{0}' for asset {1} truncated from {2} to {3} characters on add",
184 asset.Description, asset.ID, asset.Description.Length, assetDescription.Length);
185 }
186  
187 try
188 {
189 using (cmd)
190 {
191 // create unix epoch time
192 int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
193 cmd.Parameters.AddWithValue("?id", asset.ID);
194 cmd.Parameters.AddWithValue("?name", assetName);
195 cmd.Parameters.AddWithValue("?description", assetDescription);
196 cmd.Parameters.AddWithValue("?assetType", asset.Type);
197 cmd.Parameters.AddWithValue("?local", asset.Local);
198 cmd.Parameters.AddWithValue("?temporary", asset.Temporary);
199 cmd.Parameters.AddWithValue("?create_time", now);
200 cmd.Parameters.AddWithValue("?access_time", now);
201 cmd.Parameters.AddWithValue("?CreatorID", asset.Metadata.CreatorID);
202 cmd.Parameters.AddWithValue("?asset_flags", (int)asset.Flags);
203 cmd.Parameters.AddWithValue("?data", asset.Data);
204 cmd.ExecuteNonQuery();
205 }
206 }
207 catch (Exception e)
208 {
209 m_log.Error(
210 string.Format(
211 "[ASSET DB]: MySQL failure creating asset {0} with name {1}. Exception ",
212 asset.FullID, asset.Name)
213 , e);
214 }
215 }
216 }
217 }
218  
219 private void UpdateAccessTime(AssetBase asset)
220 {
221 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
222 {
223 dbcon.Open();
224  
225 using (MySqlCommand cmd
226 = new MySqlCommand("update assets set access_time=?access_time where id=?id", dbcon))
227 {
228 try
229 {
230 using (cmd)
231 {
232 // create unix epoch time
233 int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
234 cmd.Parameters.AddWithValue("?id", asset.ID);
235 cmd.Parameters.AddWithValue("?access_time", now);
236 cmd.ExecuteNonQuery();
237 }
238 }
239 catch (Exception e)
240 {
241 m_log.Error(
242 string.Format(
243 "[ASSETS DB]: Failure updating access_time for asset {0} with name {1}. Exception ",
244 asset.FullID, asset.Name),
245 e);
246 }
247 }
248 }
249 }
250  
251 /// <summary>
252 /// Check if the assets exist in the database.
253 /// </summary>
254 /// <param name="uuidss">The assets' IDs</param>
255 /// <returns>For each asset: true if it exists, false otherwise</returns>
256 public override bool[] AssetsExist(UUID[] uuids)
257 {
258 if (uuids.Length == 0)
259 return new bool[0];
260  
261 HashSet<UUID> exist = new HashSet<UUID>();
262  
263 string ids = "'" + string.Join("','", uuids) + "'";
264 string sql = string.Format("SELECT id FROM assets WHERE id IN ({0})", ids);
265  
266 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
267 {
268 dbcon.Open();
269 using (MySqlCommand cmd = new MySqlCommand(sql, dbcon))
270 {
271 using (MySqlDataReader dbReader = cmd.ExecuteReader())
272 {
273 while (dbReader.Read())
274 {
275 UUID id = DBGuid.FromDB(dbReader["id"]);
276 exist.Add(id);
277 }
278 }
279 }
280 }
281  
282 bool[] results = new bool[uuids.Length];
283 for (int i = 0; i < uuids.Length; i++)
284 results[i] = exist.Contains(uuids[i]);
285  
286 return results;
287 }
288  
289 /// <summary>
290 /// Returns a list of AssetMetadata objects. The list is a subset of
291 /// the entire data set offset by <paramref name="start" /> containing
292 /// <paramref name="count" /> elements.
293 /// </summary>
294 /// <param name="start">The number of results to discard from the total data set.</param>
295 /// <param name="count">The number of rows the returned list should contain.</param>
296 /// <returns>A list of AssetMetadata objects.</returns>
297 public override List<AssetMetadata> FetchAssetMetadataSet(int start, int count)
298 {
299 List<AssetMetadata> retList = new List<AssetMetadata>(count);
300  
301 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
302 {
303 dbcon.Open();
304  
305 using (MySqlCommand cmd
306 = new MySqlCommand(
307 "SELECT name,description,assetType,temporary,id,asset_flags,CreatorID FROM assets LIMIT ?start, ?count",
308 dbcon))
309 {
310 cmd.Parameters.AddWithValue("?start", start);
311 cmd.Parameters.AddWithValue("?count", count);
312  
313 try
314 {
315 using (MySqlDataReader dbReader = cmd.ExecuteReader())
316 {
317 while (dbReader.Read())
318 {
319 AssetMetadata metadata = new AssetMetadata();
320 metadata.Name = (string)dbReader["name"];
321 metadata.Description = (string)dbReader["description"];
322 metadata.Type = (sbyte)dbReader["assetType"];
323 metadata.Temporary = Convert.ToBoolean(dbReader["temporary"]); // Not sure if this is correct.
324 metadata.Flags = (AssetFlags)Convert.ToInt32(dbReader["asset_flags"]);
325 metadata.FullID = DBGuid.FromDB(dbReader["id"]);
326 metadata.CreatorID = dbReader["CreatorID"].ToString();
327  
328 // Current SHA1s are not stored/computed.
329 metadata.SHA1 = new byte[] { };
330  
331 retList.Add(metadata);
332 }
333 }
334 }
335 catch (Exception e)
336 {
337 m_log.Error(
338 string.Format(
339 "[ASSETS DB]: MySql failure fetching asset set from {0}, count {1}. Exception ",
340 start, count),
341 e);
342 }
343 }
344 }
345  
346 return retList;
347 }
348  
349 public override bool Delete(string id)
350 {
351 using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
352 {
353 dbcon.Open();
354  
355 using (MySqlCommand cmd = new MySqlCommand("delete from assets where id=?id", dbcon))
356 {
357 cmd.Parameters.AddWithValue("?id", id);
358 cmd.ExecuteNonQuery();
359 }
360 }
361  
362 return true;
363 }
364  
365 #endregion
366 }
367 }