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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 OpenSim 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
28using System;
29using System.Timers;
30
31namespace OpenSim.Framework.Statistics
32{
33 /// <summary>
34 /// Asset service statistics collection
35 /// </summary>
36 public class AssetStatsCollector
37 {
38 private Timer ageStatsTimer = new Timer(24 * 60 * 60 * 1000);
39 private DateTime startTime = DateTime.Now;
40
41 private long assetRequestsToday;
42 private long assetRequestsNotFoundToday;
43 private long assetRequestsYesterday;
44 private long assetRequestsNotFoundYesterday;
45
46 public long AssetRequestsToday { get { return assetRequestsToday; } }
47 public long AssetRequestsNotFoundToday { get { return assetRequestsNotFoundToday; } }
48 public long AssetRequestsYesterday { get { return assetRequestsYesterday; } }
49 public long AssetRequestsNotFoundYesterday { get { return assetRequestsNotFoundYesterday; } }
50
51 public AssetStatsCollector()
52 {
53 ageStatsTimer.Elapsed += new ElapsedEventHandler(OnAgeing);
54 ageStatsTimer.Enabled = true;
55 }
56
57 private void OnAgeing(object source, ElapsedEventArgs e)
58 {
59 assetRequestsYesterday = assetRequestsToday;
60
61 // There is a possibility that an asset request could occur between the execution of these
62 // two statements. But we're better off without the synchronization overhead.
63 assetRequestsToday = 0;
64
65 assetRequestsNotFoundYesterday = assetRequestsNotFoundToday;
66 assetRequestsNotFoundToday = 0;
67 }
68
69 /// <summary>
70 /// Record that an asset request failed to find an asset
71 /// </summary>
72 public void AddNotFoundRequest()
73 {
74 assetRequestsNotFoundToday++;
75 }
76
77 /// <summary>
78 /// Record that a request was made to the asset server
79 /// </summary>
80 public void AddRequest()
81 {
82 assetRequestsToday++;
83 }
84
85 /// <summary>
86 /// Report back collected statistical information.
87 /// </summary>
88 /// <returns></returns>
89 public string Report()
90 {
91 double elapsedHours = (DateTime.Now - startTime).TotalHours;
92 if (elapsedHours <= 0) { elapsedHours = 1; } // prevent divide by zero
93
94 long assetRequestsTodayPerHour = (long)Math.Round(AssetRequestsToday / elapsedHours);
95 long assetRequestsYesterdayPerHour = (long)Math.Round(AssetRequestsYesterday / 24.0);
96
97 return string.Format(
98@"Asset requests today : {0} ({1} per hour) of which {2} were not found
99Asset requests yesterday : {3} ({4} per hour) of which {5} were not found",
100 AssetRequestsToday, assetRequestsTodayPerHour, AssetRequestsNotFoundToday,
101 AssetRequestsYesterday, assetRequestsYesterdayPerHour, AssetRequestsNotFoundYesterday);
102 }
103 }
104}