aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Framework/Communications/Cache/CachedUserInfo.cs
blob: 7902240c17cdec7c6f00c7b0fe7b6507ca3677b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/*
 * 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 OpenSim 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.Collections.Generic;
using System.Reflection;
using libsecondlife;
using log4net;

namespace OpenSim.Framework.Communications.Cache
{
    /// <summary>
    /// Stores user profile and inventory data received from backend services for a particular user.
    /// </summary>
    public class CachedUserInfo
    {
        private static readonly ILog m_log 
            = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        
        /// <summary>
        /// The comms manager holds references to services (user, grid, inventory, etc.)
        /// </summary>        
        private readonly CommunicationsManager m_commsManager;
        
        public UserProfileData UserProfile { get { return m_userProfile; } }
        private UserProfileData m_userProfile;                

        /// <summary>
        /// Has we received the user's inventory from the inventory service?
        /// </summary>
        private bool m_hasInventory;
        
        /// <summary>
        /// Inventory requests waiting for receipt of this user's inventory from the inventory service.
        /// </summary>
        private readonly IList<IInventoryRequest> m_pendingRequests = new List<IInventoryRequest>();         
        
        /// <summary>
        /// Has this user info object yet received its inventory information from the invetnroy service?
        /// </summary>
        public bool HasInventory { get { return m_hasInventory; } }
        
        private InventoryFolderImpl m_rootFolder;
        public InventoryFolderImpl RootFolder { get { return m_rootFolder; } }        
        
        /// <summary>
        /// FIXME: This could be contained within a local variable - it doesn't need to be a field
        /// </summary>
        private IDictionary<LLUUID, IList<InventoryFolderImpl>> pendingCategorizationFolders 
            = new Dictionary<LLUUID, IList<InventoryFolderImpl>>();

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="commsManager"></param>
        /// <param name="userProfile"></param>
        public CachedUserInfo(CommunicationsManager commsManager, UserProfileData userProfile)
        {
            m_commsManager = commsManager;
            m_userProfile = userProfile;
        }
        
        /// <summary>
        /// This allows a request to be added to be processed once we receive a user's inventory
        /// from the inventory service.  If we already have the inventory, the request
        /// is executed immediately instead.
        /// </summary>
        /// <param name="parent"></param>
        public void AddRequest(IInventoryRequest request)
        {
            lock (m_pendingRequests)
            {
                if (m_hasInventory)
                {
                    request.Execute();
                }
                else
                {
                    m_pendingRequests.Add(request);
                }
            }
        }
        
        /// <summary>
        /// Store a folder pending categorization when its parent is received.
        /// </summary>
        /// <param name="folder"></param>
        private void AddPendingFolder(InventoryFolderImpl folder)
        {
            LLUUID parentFolderId = folder.ParentID;
            
            if (pendingCategorizationFolders.ContainsKey(parentFolderId))
            {
                pendingCategorizationFolders[parentFolderId].Add(folder);
            }
            else
            {
                IList<InventoryFolderImpl> folders = new List<InventoryFolderImpl>();
                folders.Add(folder);
                
                pendingCategorizationFolders[parentFolderId] = folders;
            }
        }
        
        /// <summary>
        /// Add any pending folders which are children of parent
        /// </summary>
        /// <param name="parentId">
        /// A <see cref="LLUUID"/>
        /// </param>
        private void ResolvePendingFolders(InventoryFolderImpl parent)
        {
            if (pendingCategorizationFolders.ContainsKey(parent.ID))
            {
                foreach (InventoryFolderImpl folder in pendingCategorizationFolders[parent.ID])
                {
//                    m_log.DebugFormat(
//                        "[INVENTORY CACHE]: Resolving pending received folder {0} {1} into {2} {3}",
//                        folder.name, folder.folderID, parent.name, parent.folderID);
                    
                    lock (parent.SubFolders)
                    {
                        if (!parent.SubFolders.ContainsKey(folder.ID))
                        {
                            parent.SubFolders.Add(folder.ID, folder);
                        }                    
                    }
                }
            }
        }
        
        /// <summary>
        /// Callback invoked when the inventory is received from an async request to the inventory service
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="inventoryCollection"></param>
        public void InventoryReceive(LLUUID userID, ICollection<InventoryFolderImpl> folders, ICollection<InventoryItemBase> items)
        {
            // FIXME: Exceptions thrown upwards never appear on the console.  Could fix further up if these
            // are simply being swallowed
            try
            {            
                foreach (InventoryFolderImpl folder in folders)
                {
                    FolderReceive(userID, folder);
                }
                
                foreach (InventoryItemBase item in items)
                {
                    ItemReceive(userID, item);
                }
            }
            catch (Exception e)
            {
                m_log.ErrorFormat("[INVENTORY CACHE]: Error processing inventory received from inventory service, {0}", e);
            } 
                                    
            // Deal with pending requests
            lock (m_pendingRequests)
            {
                // We're going to change inventory status within the lock to avoid a race condition
                // where requests are processed after the AddRequest() method has been called.
                m_hasInventory = true;
                
                foreach (IInventoryRequest request in m_pendingRequests)
                {
                    request.Execute();
                }
            }
        }

        /// <summary>
        /// Callback invoked when a folder is received from an async request to the inventory service.
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="folderInfo"></param>
        private void FolderReceive(LLUUID userID, InventoryFolderImpl folderInfo)
        {
//            m_log.DebugFormat(
//                "[INVENTORY CACHE]: Received folder {0} {1} for user {2}", 
//                folderInfo.Name, folderInfo.ID, userID);
            
            if (userID == UserProfile.ID)
            {
                if (RootFolder == null)
                {
                    if (folderInfo.ParentID == LLUUID.Zero)
                    {
                        m_rootFolder = folderInfo;
                    }
                }
                else if (RootFolder.ID == folderInfo.ParentID)
                {
                    lock (RootFolder.SubFolders)
                    {
                        if (!RootFolder.SubFolders.ContainsKey(folderInfo.ID))
                        {
                            RootFolder.SubFolders.Add(folderInfo.ID, folderInfo);
                        }
                        else
                        {
                            AddPendingFolder(folderInfo);
                        }      
                    }
                }
                else
                {
                    InventoryFolderImpl folder = RootFolder.GetDescendentFolder(folderInfo.ParentID);
                    lock (folder.SubFolders)
                    {
                        if (folder != null)
                        {
                            if (!folder.SubFolders.ContainsKey(folderInfo.ID))
                            {
                                folder.SubFolders.Add(folderInfo.ID, folderInfo);
                            }
                        }
                        else
                        {
                            AddPendingFolder(folderInfo);
                        }
                    }
                }
                
                ResolvePendingFolders(folderInfo);
            }
        }

        /// <summary>
        /// Callback invoked when an item is received from an async request to the inventory service.
        /// 
        /// We're assuming here that items are always received after all the folders have been
        /// received.
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="folderInfo"></param>        
        private void ItemReceive(LLUUID userID, InventoryItemBase itemInfo)
        {
//            m_log.DebugFormat(
//                "[INVENTORY CACHE]: Received item {0} {1} for user {2}", 
//                itemInfo.Name, itemInfo.ID, userID);
            
            if ((userID == UserProfile.ID) && (RootFolder != null))
            {
                if (itemInfo.Folder == RootFolder.ID)
                {
                    lock (RootFolder.Items)
                    {
                        if (!RootFolder.Items.ContainsKey(itemInfo.ID))
                        {

                            RootFolder.Items.Add(itemInfo.ID, itemInfo);
                        }
                        else 
                        {
                            RootFolder.Items[itemInfo.ID] = itemInfo;
                        }
                    }
                }
                else
                {
                    InventoryFolderImpl folder = RootFolder.GetDescendentFolder(itemInfo.Folder);
                    if (folder != null)
                    {
                        lock (folder.Items)
                        {
                            if (!folder.Items.ContainsKey(itemInfo.ID))
                            {
                                folder.Items.Add(itemInfo.ID, itemInfo);
                            }
                            else
                            {
                                folder.Items[itemInfo.ID] = itemInfo;
                            }
                        }
                    }
                }
            }
        }

        /// <summary>
        /// Add an item to the user's inventory
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="itemInfo"></param>
        public void AddItem(LLUUID userID, InventoryItemBase itemInfo)
        {
            if ((userID == UserProfile.ID) && HasInventory)
            {
                ItemReceive(userID, itemInfo);
                m_commsManager.InventoryService.AddNewInventoryItem(userID, itemInfo);
            }
        }

        /// <summary>
        /// Update an item in the user's inventory
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="itemInfo"></param>
        public void UpdateItem(LLUUID userID, InventoryItemBase itemInfo)
        {
            if ((userID == UserProfile.ID) && HasInventory)
            {
                m_commsManager.InventoryService.UpdateInventoryItem(userID, itemInfo);
            }
        }

        /// <summary>
        /// Delete an item from the user's inventory
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="item"></param>
        /// <returns></returns>
        public bool DeleteItem(LLUUID userID, InventoryItemBase item)
        {
            bool result = false;
            if ((userID == UserProfile.ID) && HasInventory)
            {
                result = RootFolder.DeleteItem(item.ID);
                if (result)
                {
                    m_commsManager.InventoryService.DeleteInventoryItem(userID, item);
                }
            }
            
            return result;
        }
    }
    
    /// <summary>
    /// Should be implemented by callers which require a callback when the user's inventory is received
    /// </summary>    
    public interface IInventoryRequest
    {
        /// <summary>
        /// This is the method executed once we have received the user's inventory by which the request can be fulfilled.
        /// </summary>
        void Execute();
    }
        
    /// <summary>
    /// Generic inventory request
    /// </summary>
    public class InventoryRequest : IInventoryRequest
    {
        private Delegate m_delegat;
        private Object[] m_args;
        
        internal InventoryRequest(Delegate delegat, Object[] args)
        {
            m_delegat = delegat; 
            m_args = args;
        }
        
        public void Execute()
        {
            m_delegat.DynamicInvoke(m_args);
        }
    }      
}