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
|
/*
* 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.Generic;
using System.Net;
using System.Reflection;
using System.Threading;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using log4net;
using OpenSim.Framework;
using OpenSim.Framework.Client;
using OpenSim.Framework.Communications;
using OpenSim.Framework.Capabilities;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Services.Interfaces;
using OSD = OpenMetaverse.StructuredData.OSD;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
namespace OpenSim.Region.Framework.Scenes
{
public delegate void RemoveKnownRegionsFromAvatarList(UUID avatarID, List<ulong> regionlst);
/// <summary>
/// Class that Region communications runs through
/// </summary>
public class SceneCommunicationService //one instance per region
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
protected RegionInfo m_regionInfo;
protected Scene m_scene;
public void SetScene(Scene s)
{
m_scene = s;
m_regionInfo = s.RegionInfo;
}
public delegate void InformNeighbourThatRegionUpDelegate(INeighbourService nService, RegionInfo region, ulong regionhandle);
private void InformNeighborsThatRegionisUpCompleted(IAsyncResult iar)
{
InformNeighbourThatRegionUpDelegate icon = (InformNeighbourThatRegionUpDelegate) iar.AsyncState;
icon.EndInvoke(iar);
}
/// <summary>
/// Asynchronous call to information neighbouring regions that this region is up
/// </summary>
/// <param name="region"></param>
/// <param name="regionhandle"></param>
private void InformNeighboursThatRegionIsUpAsync(INeighbourService neighbourService, RegionInfo region, ulong regionhandle)
{
uint x = 0, y = 0;
Utils.LongToUInts(regionhandle, out x, out y);
GridRegion neighbour = null;
if (neighbourService != null)
neighbour = neighbourService.HelloNeighbour(regionhandle, region);
else
m_log.DebugFormat(
"[SCENE COMMUNICATION SERVICE]: No neighbour service provided for region {0} to inform neigbhours of status",
m_scene.Name);
if (neighbour != null)
{
m_log.DebugFormat(
"[SCENE COMMUNICATION SERVICE]: Region {0} successfully informed neighbour {1} at {2}-{3} that it is up",
m_scene.Name, neighbour.RegionName, x / Constants.RegionSize, y / Constants.RegionSize);
m_scene.EventManager.TriggerOnRegionUp(neighbour);
}
else
{
m_log.WarnFormat(
"[SCENE COMMUNICATION SERVICE]: Region {0} failed to inform neighbour at {1}-{2} that it is up.",
m_scene.Name, x / Constants.RegionSize, y / Constants.RegionSize);
}
}
public void InformNeighborsThatRegionisUp(INeighbourService neighbourService, RegionInfo region)
{
//m_log.Info("[INTER]: " + debugRegionName + ": SceneCommunicationService: Sending InterRegion Notification that region is up " + region.RegionName);
List<GridRegion> neighbours
= m_scene.GridService.GetNeighbours(m_scene.RegionInfo.ScopeID, m_scene.RegionInfo.RegionID);
m_log.DebugFormat(
"[SCENE COMMUNICATION SERVICE]: Informing {0} neighbours that region {1} is up",
neighbours.Count, m_scene.Name);
foreach (GridRegion n in neighbours)
{
InformNeighbourThatRegionUpDelegate d = InformNeighboursThatRegionIsUpAsync;
d.BeginInvoke(neighbourService, region, n.RegionHandle,
InformNeighborsThatRegionisUpCompleted,
d);
}
}
public delegate void SendChildAgentDataUpdateDelegate(AgentPosition cAgentData, UUID scopeID, GridRegion dest);
/// <summary>
/// This informs all neighboring regions about the settings of it's child agent.
/// Calls an asynchronous method to do so.. so it doesn't lag the sim.
///
/// This contains information, such as, Draw Distance, Camera location, Current Position, Current throttle settings, etc.
///
/// </summary>
private void SendChildAgentDataUpdateAsync(AgentPosition cAgentData, UUID scopeID, GridRegion dest)
{
//m_log.Info("[INTERGRID]: Informing neighbors about my agent in " + m_regionInfo.RegionName);
try
{
m_scene.SimulationService.UpdateAgent(dest, cAgentData);
}
catch
{
// Ignore; we did our best
}
}
private void SendChildAgentDataUpdateCompleted(IAsyncResult iar)
{
SendChildAgentDataUpdateDelegate icon = (SendChildAgentDataUpdateDelegate) iar.AsyncState;
icon.EndInvoke(iar);
}
public void SendChildAgentDataUpdate(AgentPosition cAgentData, ScenePresence presence)
{
// This assumes that we know what our neighbors are.
try
{
uint x = 0, y = 0;
List<string> simulatorList = new List<string>();
foreach (ulong regionHandle in presence.KnownRegionHandles)
{
if (regionHandle != m_regionInfo.RegionHandle)
{
// we only want to send one update to each simulator; the simulator will
// hand it off to the regions where a child agent exists, this does assume
// that the region position is cached or performance will degrade
Utils.LongToUInts(regionHandle, out x, out y);
GridRegion dest = m_scene.GridService.GetRegionByPosition(UUID.Zero, (int)x, (int)y);
if (dest == null)
continue;
if (!simulatorList.Contains(dest.ServerURI))
{
// we havent seen this simulator before, add it to the list
// and send it an update
simulatorList.Add(dest.ServerURI);
// Let move this to sync. Mono definitely does not like async networking.
m_scene.SimulationService.UpdateAgent(dest, cAgentData);
// Leaving this here as a reminder that we tried, and it sucks.
//SendChildAgentDataUpdateDelegate d = SendChildAgentDataUpdateAsync;
//d.BeginInvoke(cAgentData, m_regionInfo.ScopeID, dest,
// SendChildAgentDataUpdateCompleted,
// d);
}
}
}
}
catch (InvalidOperationException)
{
// We're ignoring a collection was modified error because this data gets old and outdated fast.
}
}
/// <summary>
/// Closes a child agent on a given region
/// </summary>
protected void SendCloseChildAgent(UUID agentID, ulong regionHandle)
{
// let's do our best, but there's not much we can do if the neighbour doesn't accept.
//m_commsProvider.InterRegion.TellRegionToCloseChildConnection(regionHandle, agentID);
uint x = 0, y = 0;
Utils.LongToUInts(regionHandle, out x, out y);
GridRegion destination = m_scene.GridService.GetRegionByPosition(m_regionInfo.ScopeID, (int)x, (int)y);
m_log.DebugFormat(
"[SCENE COMMUNICATION SERVICE]: Sending close agent ID {0} to {1}", agentID, destination.RegionName);
m_scene.SimulationService.CloseAgent(destination, agentID);
}
/// <summary>
/// Closes a child agents in a collection of regions. Does so asynchronously
/// so that the caller doesn't wait.
/// </summary>
/// <param name="agentID"></param>
/// <param name="regionslst"></param>
public void SendCloseChildAgentConnections(UUID agentID, List<ulong> regionslst)
{
foreach (ulong handle in regionslst)
{
// We must take a copy here since handle is acts like a reference when used in an iterator.
// This leads to race conditions if directly passed to SendCloseChildAgent with more than one neighbour region.
ulong handleCopy = handle;
Util.FireAndForget((o) => { SendCloseChildAgent(agentID, handleCopy); });
}
}
public List<GridRegion> RequestNamedRegions(string name, int maxNumber)
{
return m_scene.GridService.GetRegionsByName(UUID.Zero, name, maxNumber);
}
}
}
|
