aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/AsyncCommandManager.cs
blob: 693992afe4b613a82b4672754ac693fd6a3c62a7 (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
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
/*
 * 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.Collections;
using System.Collections.Generic;
using System.Threading;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.ScriptEngine.Interfaces;
using OpenSim.Region.ScriptEngine.Shared;
using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
using Timer=OpenSim.Region.ScriptEngine.Shared.Api.Plugins.Timer;

namespace OpenSim.Region.ScriptEngine.Shared.Api
{
    /// <summary>
    /// Handles LSL commands that takes long time and returns an event, for example timers, HTTP requests, etc.
    /// </summary>
    public class AsyncCommandManager
    {
        private static Thread cmdHandlerThread;
        private static int cmdHandlerThreadCycleSleepms;

        private static List<IScene> m_Scenes = new List<IScene>();
        private static List<IScriptEngine> m_ScriptEngines =
                new List<IScriptEngine>();

        public IScriptEngine m_ScriptEngine;
        private IScene m_Scene;

        private static Dictionary<IScriptEngine, Dataserver> m_Dataserver =
                new Dictionary<IScriptEngine, Dataserver>();
        private static Dictionary<IScriptEngine, Timer> m_Timer =
                new Dictionary<IScriptEngine, Timer>();
        private static Dictionary<IScriptEngine, Listener> m_Listener =
                new Dictionary<IScriptEngine, Listener>();
        private static Dictionary<IScriptEngine, HttpRequest> m_HttpRequest =
                new Dictionary<IScriptEngine, HttpRequest>();
        private static Dictionary<IScriptEngine, SensorRepeat> m_SensorRepeat =
                new Dictionary<IScriptEngine, SensorRepeat>();
        private static Dictionary<IScriptEngine, XmlRequest> m_XmlRequest =
                new Dictionary<IScriptEngine, XmlRequest>();

        public Dataserver DataserverPlugin
        {
            get { return m_Dataserver[m_ScriptEngine]; }
        }

        public Timer TimerPlugin
        {
            get { return m_Timer[m_ScriptEngine]; }
        }

        public HttpRequest HttpRequestPlugin
        {
            get { return m_HttpRequest[m_ScriptEngine]; }
        }

        public Listener ListenerPlugin
        {
            get { return m_Listener[m_ScriptEngine]; }
        }

        public SensorRepeat SensorRepeatPlugin
        {
            get { return m_SensorRepeat[m_ScriptEngine]; }
        }

        public XmlRequest XmlRequestPlugin
        {
            get { return m_XmlRequest[m_ScriptEngine]; }
        }

        public IScriptEngine[] ScriptEngines
        {
            get { return m_ScriptEngines.ToArray(); }
        }

        public AsyncCommandManager(IScriptEngine _ScriptEngine)
        {
            m_ScriptEngine = _ScriptEngine;
            m_Scene = m_ScriptEngine.World;

            if (m_Scenes.Count == 0)
                ReadConfig();

            if (!m_Scenes.Contains(m_Scene))
                m_Scenes.Add(m_Scene);
            if (!m_ScriptEngines.Contains(m_ScriptEngine))
                m_ScriptEngines.Add(m_ScriptEngine);

            // Create instances of all plugins
            if (!m_Dataserver.ContainsKey(m_ScriptEngine))
                m_Dataserver[m_ScriptEngine] = new Dataserver(this);
            if (!m_Timer.ContainsKey(m_ScriptEngine))
                m_Timer[m_ScriptEngine] = new Timer(this);
            if (!m_HttpRequest.ContainsKey(m_ScriptEngine))
                m_HttpRequest[m_ScriptEngine] = new HttpRequest(this);
            if (!m_Listener.ContainsKey(m_ScriptEngine))
                m_Listener[m_ScriptEngine] = new Listener(this);
            if (!m_SensorRepeat.ContainsKey(m_ScriptEngine))
                m_SensorRepeat[m_ScriptEngine] = new SensorRepeat(this);
            if (!m_XmlRequest.ContainsKey(m_ScriptEngine))
                m_XmlRequest[m_ScriptEngine] = new XmlRequest(this);

            StartThread();
        }

        private static void StartThread()
        {
            if (cmdHandlerThread == null)
            {
                // Start the thread that will be doing the work
                cmdHandlerThread
                    = Watchdog.StartThread(
                        CmdHandlerThreadLoop, "AsyncLSLCmdHandlerThread", ThreadPriority.Normal, true, true);
            }
        }

        private void ReadConfig()
        {
//            cmdHandlerThreadCycleSleepms = m_ScriptEngine.Config.GetInt("AsyncLLCommandLoopms", 100);
            // TODO: Make this sane again
            cmdHandlerThreadCycleSleepms = 100;
        }

        ~AsyncCommandManager()
        {
            // Shut down thread
//            try
//            {
//                if (cmdHandlerThread != null)
//                {
//                    if (cmdHandlerThread.IsAlive == true)
//                    {
//                        cmdHandlerThread.Abort();
//                        //cmdHandlerThread.Join();
//                    }
//                }
//            }
//            catch
//            {
//            }
        }

        /// <summary>
        /// Main loop for the manager thread
        /// </summary>
        private static void CmdHandlerThreadLoop()
        {
            while (true)
            {
                try
                {
                    while (true)
                    {
                        Thread.Sleep(cmdHandlerThreadCycleSleepms);

                        DoOneCmdHandlerPass();

                        Watchdog.UpdateThread();
                    }
                }
                catch
                {
                }
            }
        }

        private static void DoOneCmdHandlerPass()
        {
            // Check HttpRequests
            m_HttpRequest[m_ScriptEngines[0]].CheckHttpRequests();

            // Check XMLRPCRequests
            m_XmlRequest[m_ScriptEngines[0]].CheckXMLRPCRequests();

            foreach (IScriptEngine s in m_ScriptEngines)
            {
                // Check Listeners
                m_Listener[s].CheckListeners();

                // Check timers
                m_Timer[s].CheckTimerEvents();

                // Check Sensors
                m_SensorRepeat[s].CheckSenseRepeaterEvents();

                // Check dataserver
                m_Dataserver[s].ExpireRequests();
            }
        }

        /// <summary>
        /// Remove a specific script (and all its pending commands)
        /// </summary>
        /// <param name="localID"></param>
        /// <param name="itemID"></param>
        public static void RemoveScript(IScriptEngine engine, uint localID, UUID itemID)
        {
            // Remove a specific script

            // Remove dataserver events
            m_Dataserver[engine].RemoveEvents(localID, itemID);

            // Remove from: Timers
            m_Timer[engine].UnSetTimerEvents(localID, itemID);

            // Remove from: HttpRequest
            IHttpRequestModule iHttpReq = engine.World.RequestModuleInterface<IHttpRequestModule>();
            if (iHttpReq != null)
                iHttpReq.StopHttpRequest(localID, itemID);

            IWorldComm comms = engine.World.RequestModuleInterface<IWorldComm>();
            if (comms != null)
                comms.DeleteListener(itemID);

            IXMLRPC xmlrpc = engine.World.RequestModuleInterface<IXMLRPC>();
            if (xmlrpc != null)
            {
                xmlrpc.DeleteChannels(itemID);
                xmlrpc.CancelSRDRequests(itemID);
            }

            // Remove Sensors
            m_SensorRepeat[engine].UnSetSenseRepeaterEvents(localID, itemID);
        }

        /// <summary>
        /// Get the sensor repeat plugin for this script engine.
        /// </summary>
        /// <param name="engine"></param>
        /// <returns></returns>
        public static SensorRepeat GetSensorRepeatPlugin(IScriptEngine engine)
        {
            if (m_SensorRepeat.ContainsKey(engine))
                return m_SensorRepeat[engine];
            else
                return null;
        }

        /// <summary>
        /// Get the dataserver plugin for this script engine.
        /// </summary>
        /// <param name="engine"></param>
        /// <returns></returns>
        public static Dataserver GetDataserverPlugin(IScriptEngine engine)
        {
            if (m_Dataserver.ContainsKey(engine))
                return m_Dataserver[engine];
            else
                return null;
        }

        /// <summary>
        /// Get the timer plugin for this script engine.
        /// </summary>
        /// <param name="engine"></param>
        /// <returns></returns>
        public static Timer GetTimerPlugin(IScriptEngine engine)
        {
            if (m_Timer.ContainsKey(engine))
                return m_Timer[engine];
            else
                return null;
        }

        /// <summary>
        /// Get the listener plugin for this script engine.
        /// </summary>
        /// <param name="engine"></param>
        /// <returns></returns>
        public static Listener GetListenerPlugin(IScriptEngine engine)
        {
            if (m_Listener.ContainsKey(engine))
                return m_Listener[engine];
            else
                return null;
        }

        public static void StateChange(IScriptEngine engine, uint localID, UUID itemID)
        {
            // Remove a specific script

            // Remove dataserver events
            m_Dataserver[engine].RemoveEvents(localID, itemID);

            IWorldComm comms = engine.World.RequestModuleInterface<IWorldComm>();
            if (comms != null)
                comms.DeleteListener(itemID);

            IXMLRPC xmlrpc = engine.World.RequestModuleInterface<IXMLRPC>();
            xmlrpc.DeleteChannels(itemID);
            xmlrpc.CancelSRDRequests(itemID);

            // Remove Sensors
            m_SensorRepeat[engine].UnSetSenseRepeaterEvents(localID, itemID);

        }

        public static Object[] GetSerializationData(IScriptEngine engine, UUID itemID)
        {
            List<Object> data = new List<Object>();

            Object[] listeners = m_Listener[engine].GetSerializationData(itemID);
            if (listeners.Length > 0)
            {
                data.Add("listener");
                data.Add(listeners.Length);
                data.AddRange(listeners);
            }

            Object[] timers=m_Timer[engine].GetSerializationData(itemID);
            if (timers.Length > 0)
            {
                data.Add("timer");
                data.Add(timers.Length);
                data.AddRange(timers);
            }

            Object[] sensors = m_SensorRepeat[engine].GetSerializationData(itemID);
            if (sensors.Length > 0)
            {
                data.Add("sensor");
                data.Add(sensors.Length);
                data.AddRange(sensors);
            }

            return data.ToArray();
        }

        public static void CreateFromData(IScriptEngine engine, uint localID,
                UUID itemID, UUID hostID, Object[] data)
        {
            int idx = 0;
            int len;

            while (idx < data.Length)
            {
                string type = data[idx].ToString();
                len = (int)data[idx+1];
                idx+=2;

                if (len > 0)
                {
                    Object[] item = new Object[len];
                    Array.Copy(data, idx, item, 0, len);

                    idx+=len;

                    switch (type)
                    {
                    case "listener":
                        m_Listener[engine].CreateFromData(localID, itemID,
                                                    hostID, item);
                        break;
                    case "timer":
                        m_Timer[engine].CreateFromData(localID, itemID,
                                                    hostID, item);
                        break;
                    case "sensor":
                        m_SensorRepeat[engine].CreateFromData(localID,
                                                    itemID, hostID, item);
                        break;
                    }
                }
            }
        }

        #region Check llRemoteData channels

        #endregion

        #region Check llListeners

        #endregion

        /// <summary>
        /// If set to true then threads and stuff should try to make a graceful exit
        /// </summary>
        public bool PleaseShutdown
        {
            get { return _PleaseShutdown; }
            set { _PleaseShutdown = value; }
        }
        private bool _PleaseShutdown = false;
    }
}