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diff --git a/OpenSim/Region/OptionalModules/Framework/Monitoring/EtcdMonitoringModule.cs b/OpenSim/Region/OptionalModules/Framework/Monitoring/EtcdMonitoringModule.cs
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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 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
28using System;
29using System.Collections.Generic;
30using System.Reflection;
31using System.Text;
32using log4net;
33using Mono.Addins;
34using Nini.Config;
35using OpenMetaverse;
36using OpenSim.Framework;
37using OpenSim.Framework.Console;
38using OpenSim.Region.Framework.Interfaces;
39using OpenSim.Region.Framework.Scenes;
40using netcd;
41using netcd.Serialization;
42using netcd.Advanced;
43using netcd.Advanced.Requests;
44
45namespace OpenSim.Region.OptionalModules.Framework.Monitoring
46{
47 /// <summary>
48 /// Allows to store monitoring data in etcd, a high availability
49 /// name-value store.
50 /// </summary>
51 [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "EtcdMonitoringModule")]
52 public class EtcdMonitoringModule : INonSharedRegionModule, IEtcdModule
53 {
54 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
55
56 protected Scene m_scene;
57 protected IEtcdClient m_client;
58 protected bool m_enabled = false;
59 protected string m_etcdBasePath = String.Empty;
60 protected bool m_appendRegionID = true;
61
62 public string Name
63 {
64 get { return "EtcdMonitoringModule"; }
65 }
66
67 public Type ReplaceableInterface
68 {
69 get { return null; }
70 }
71
72 public void Initialise(IConfigSource source)
73 {
74 if (source.Configs["Etcd"] == null)
75 return;
76
77 IConfig etcdConfig = source.Configs["Etcd"];
78
79 string etcdUrls = etcdConfig.GetString("EtcdUrls", String.Empty);
80 if (etcdUrls == String.Empty)
81 return;
82
83 m_etcdBasePath = etcdConfig.GetString("BasePath", m_etcdBasePath);
84 m_appendRegionID = etcdConfig.GetBoolean("AppendRegionID", m_appendRegionID);
85
86 if (!m_etcdBasePath.EndsWith("/"))
87 m_etcdBasePath += "/";
88
89 try
90 {
91 string[] endpoints = etcdUrls.Split(new char[] {','});
92 List<Uri> uris = new List<Uri>();
93 foreach (string endpoint in endpoints)
94 uris.Add(new Uri(endpoint.Trim()));
95
96 m_client = new EtcdClient(uris.ToArray(), new DefaultSerializer(), new DefaultSerializer());
97 }
98 catch (Exception e)
99 {
100 m_log.DebugFormat("[ETCD]: Error initializing connection: " + e.ToString());
101 return;
102 }
103
104 m_log.DebugFormat("[ETCD]: Etcd module configured");
105 m_enabled = true;
106 }
107
108 public void Close()
109 {
110 //m_client = null;
111 m_scene = null;
112 }
113
114 public void AddRegion(Scene scene)
115 {
116 m_scene = scene;
117
118 if (m_enabled)
119 {
120 if (m_appendRegionID)
121 m_etcdBasePath += m_scene.RegionInfo.RegionID.ToString() + "/";
122
123 m_log.DebugFormat("[ETCD]: Using base path {0} for all keys", m_etcdBasePath);
124
125 try
126 {
127 m_client.Advanced.CreateDirectory(new CreateDirectoryRequest() {Key = m_etcdBasePath});
128 }
129 catch (Exception e)
130 {
131 m_log.ErrorFormat("Exception trying to create base path {0}: " + e.ToString(), m_etcdBasePath);
132 }
133
134 scene.RegisterModuleInterface<IEtcdModule>(this);
135 }
136 }
137
138 public void RemoveRegion(Scene scene)
139 {
140 }
141
142 public void RegionLoaded(Scene scene)
143 {
144 }
145
146 public bool Store(string k, string v)
147 {
148 return Store(k, v, 0);
149 }
150
151 public bool Store(string k, string v, int ttl)
152 {
153 Response resp = m_client.Advanced.SetKey(new SetKeyRequest() { Key = m_etcdBasePath + k, Value = v, TimeToLive = ttl });
154
155 if (resp == null)
156 return false;
157
158 if (resp.ErrorCode.HasValue)
159 {
160 m_log.DebugFormat("[ETCD]: Error {0} ({1}) storing {2} => {3}", resp.Cause, (int)resp.ErrorCode, m_etcdBasePath + k, v);
161
162 return false;
163 }
164
165 return true;
166 }
167
168 public string Get(string k)
169 {
170 Response resp = m_client.Advanced.GetKey(new GetKeyRequest() { Key = m_etcdBasePath + k });
171
172 if (resp == null)
173 return String.Empty;
174
175 if (resp.ErrorCode.HasValue)
176 {
177 m_log.DebugFormat("[ETCD]: Error {0} ({1}) getting {2}", resp.Cause, (int)resp.ErrorCode, m_etcdBasePath + k);
178
179 return String.Empty;
180 }
181
182 return resp.Node.Value;
183 }
184
185 public void Delete(string k)
186 {
187 m_client.Advanced.DeleteKey(new DeleteKeyRequest() { Key = m_etcdBasePath + k });
188 }
189
190 public void Watch(string k, Action<string> callback)
191 {
192 m_client.Advanced.WatchKey(new WatchKeyRequest() { Key = m_etcdBasePath + k, Callback = (x) => { callback(x.Node.Value); } });
193 }
194 }
195}