opensim – Blame information for rev 1
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
1 | eva | 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.Collections.Generic; |
||
29 | |||
30 | namespace OpenSim.Framework.Communications.Limit |
||
31 | { |
||
32 | /// <summary> |
||
33 | /// Limit requests by discarding them after they've been repeated a certain number of times. |
||
34 | /// </summary> |
||
35 | public class RepeatLimitStrategy<TId> : IRequestLimitStrategy<TId> |
||
36 | { |
||
37 | /// <summary> |
||
38 | /// Record each asset request that we're notified about. |
||
39 | /// </summary> |
||
40 | private readonly Dictionary<TId, int> requestCounts = new Dictionary<TId, int>(); |
||
41 | |||
42 | /// <summary> |
||
43 | /// The maximum number of requests that can be made before we drop subsequent requests. |
||
44 | /// </summary> |
||
45 | private readonly int m_maxRequests; |
||
46 | public int MaxRequests |
||
47 | { |
||
48 | get { return m_maxRequests; } |
||
49 | } |
||
50 | |||
51 | /// <summary></summary> |
||
52 | /// <param name="maxRequests">The maximum number of requests that may be served before all further |
||
53 | /// requests are dropped.</param> |
||
54 | public RepeatLimitStrategy(int maxRequests) |
||
55 | { |
||
56 | m_maxRequests = maxRequests; |
||
57 | } |
||
58 | |||
59 | /// <summary> |
||
60 | /// <see cref="IRequestLimitStrategy"/> |
||
61 | /// </summary> |
||
62 | public bool AllowRequest(TId id) |
||
63 | { |
||
64 | if (requestCounts.ContainsKey(id)) |
||
65 | { |
||
66 | requestCounts[id] += 1; |
||
67 | |||
68 | if (requestCounts[id] > m_maxRequests) |
||
69 | { |
||
70 | return false; |
||
71 | } |
||
72 | } |
||
73 | |||
74 | return true; |
||
75 | } |
||
76 | |||
77 | /// <summary> |
||
78 | /// <see cref="IRequestLimitStrategy"/> |
||
79 | /// </summary> |
||
80 | public bool IsFirstRefusal(TId id) |
||
81 | { |
||
82 | if (requestCounts.ContainsKey(id) && m_maxRequests + 1 == requestCounts[id]) |
||
83 | { |
||
84 | return true; |
||
85 | } |
||
86 | |||
87 | return false; |
||
88 | } |
||
89 | |||
90 | /// <summary> |
||
91 | /// <see cref="IRequestLimitStrategy"/> |
||
92 | /// </summary> |
||
93 | public void MonitorRequests(TId id) |
||
94 | { |
||
95 | if (!IsMonitoringRequests(id)) |
||
96 | { |
||
97 | requestCounts.Add(id, 1); |
||
98 | } |
||
99 | } |
||
100 | |||
101 | /// <summary> |
||
102 | /// <see cref="IRequestLimitStrategy"/> |
||
103 | /// </summary> |
||
104 | public bool IsMonitoringRequests(TId id) |
||
105 | { |
||
106 | return requestCounts.ContainsKey(id); |
||
107 | } |
||
108 | } |
||
109 | } |