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  66   <h1>Source code for nepi.resources.omf.node</h1><div class="highlight"><pre>
  67 <span class="c">#</span>
  68 <span class="c">#    NEPI, a framework to manage network experiments</span>
  69 <span class="c">#    Copyright (C) 2013 INRIA</span>
  70 <span class="c">#</span>
  71 <span class="c">#    This program is free software: you can redistribute it and/or modify</span>
  72 <span class="c">#    it under the terms of the GNU General Public License version 2 as</span>
  73 <span class="c">#    published by the Free Software Foundation;</span>
  74 <span class="c">#</span>
  75 <span class="c">#    This program is distributed in the hope that it will be useful,</span>
  76 <span class="c">#    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
  77 <span class="c">#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
  78 <span class="c">#    GNU General Public License for more details.</span>
  79 <span class="c">#</span>
  80 <span class="c">#    You should have received a copy of the GNU General Public License</span>
  81 <span class="c">#    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
  82 <span class="c">#</span>
  83 <span class="c"># Author: Alina Quereilhac &lt;alina.quereilhac@inria.fr&gt;</span>
  84 <span class="c">#         Julien Tribino &lt;julien.tribino@inria.fr&gt;</span>
  85
  86 <span class="kn">from</span> <span class="nn">nepi.util.timefuncs</span> <span class="kn">import</span> <span class="n">tnow</span>
  87 <span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">ResourceManager</span><span class="p">,</span> <span class="n">clsinit_copy</span><span class="p">,</span> \
  88         <span class="n">ResourceState</span>
  89 <span class="kn">from</span> <span class="nn">nepi.execution.attribute</span> <span class="kn">import</span> <span class="n">Attribute</span><span class="p">,</span> <span class="n">Flags</span>
  90 <span class="kn">from</span> <span class="nn">nepi.resources.omf.omf_resource</span> <span class="kn">import</span> <span class="n">ResourceGateway</span><span class="p">,</span> <span class="n">OMFResource</span>
  91 <span class="kn">from</span> <span class="nn">nepi.resources.omf.omf_api_factory</span> <span class="kn">import</span> <span class="n">OMFAPIFactory</span>
  92
  93 <span class="kn">import</span> <span class="nn">time</span>
  94
  95 <span class="n">reschedule_check</span> <span class="o">=</span> <span class="s">&quot;1s&quot;</span>
  96 <span class="n">confirmation_counter</span> <span class="o">=</span> <span class="mi">3600</span>
  97
  98 <span class="nd">@clsinit_copy</span>
  99 <div class="viewcode-block" id="OMFNode"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.node.OMFNode">[docs]</a><span class="k">class</span> <span class="nc">OMFNode</span><span class="p">(</span><span class="n">OMFResource</span><span class="p">):</span>
 100     <span class="sd">&quot;&quot;&quot;</span>
 101 <span class="sd">    .. class:: Class Args :</span>
 102 <span class="sd">      </span>
 103 <span class="sd">        :param ec: The Experiment controller</span>
 104 <span class="sd">        :type ec: ExperimentController</span>
 105 <span class="sd">        :param guid: guid of the RM</span>
 106 <span class="sd">        :type guid: int</span>
 107 <span class="sd">        :param creds: Credentials to communicate with the rm (XmppClient for OMF)</span>
 108 <span class="sd">        :type creds: dict</span>
 109
 110 <span class="sd">    &quot;&quot;&quot;</span>
 111     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;omf::Node&quot;</span>
 112     <span class="n">_authorized_connections</span> <span class="o">=</span> <span class="p">[</span><span class="s">&quot;omf::Application&quot;</span> <span class="p">,</span> <span class="s">&quot;omf::WifiInterface&quot;</span><span class="p">]</span>
 113
 114     <span class="nd">@classmethod</span>
 115     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
 116         <span class="sd">&quot;&quot;&quot;Register the attributes of an OMF Node</span>
 117
 118 <span class="sd">        &quot;&quot;&quot;</span>
 119         <span class="n">hostname</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">,</span> <span class="s">&quot;Hostname of the machine&quot;</span><span class="p">)</span>
 120
 121         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">hostname</span><span class="p">)</span>
 122
 123     <span class="c"># XXX: We don&#39;t necessary need to have the credentials at the </span>
 124     <span class="c"># moment we create the RM</span>
 125     <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
 126         <span class="sd">&quot;&quot;&quot;</span>
 127 <span class="sd">        :param ec: The Experiment controller</span>
 128 <span class="sd">        :type ec: ExperimentController</span>
 129 <span class="sd">        :param guid: guid of the RM</span>
 130 <span class="sd">        :type guid: int</span>
 131
 132 <span class="sd">        &quot;&quot;&quot;</span>
 133         <span class="nb">super</span><span class="p">(</span><span class="n">OMFNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">)</span>
 134
 135         <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span> <span class="o">=</span> <span class="bp">None</span>
 136
 137         <span class="c"># For performance tests</span>
 138         <span class="bp">self</span><span class="o">.</span><span class="n">perf</span> <span class="o">=</span> <span class="bp">True</span>
 139         <span class="bp">self</span><span class="o">.</span><span class="n">begin_deploy_time</span> <span class="o">=</span> <span class="bp">None</span>
 140
 141
 142     <span class="nd">@property</span>
 143 <div class="viewcode-block" id="OMFNode.exp_id"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.node.OMFNode.exp_id">[docs]</a>    <span class="k">def</span> <span class="nf">exp_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 144         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">exp_id</span>
 145 </div>
 146 <div class="viewcode-block" id="OMFNode.valid_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.node.OMFNode.valid_connection">[docs]</a>    <span class="k">def</span> <span class="nf">valid_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
 147         <span class="sd">&quot;&quot;&quot; Check if the connection with the guid in parameter is possible. </span>
 148 <span class="sd">        Only meaningful connections are allowed.</span>
 149
 150 <span class="sd">        :param guid: Guid of the current RM</span>
 151 <span class="sd">        :type guid: int</span>
 152 <span class="sd">        :rtype:  Boolean</span>
 153
 154 <span class="sd">        &quot;&quot;&quot;</span>
 155         <span class="n">rm</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">get_resource</span><span class="p">(</span><span class="n">guid</span><span class="p">)</span>
 156         <span class="k">if</span> <span class="n">rm</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">()</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_authorized_connections</span><span class="p">:</span>
 157             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Connection between </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> and </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> accepted&quot;</span> <span class="o">%</span> <span class="p">(</span>
 158                     <span class="bp">self</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">_guid</span><span class="p">,</span> <span class="n">rm</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">(),</span> <span class="n">guid</span><span class="p">)</span>
 159             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 160             <span class="k">return</span> <span class="bp">True</span>
 161
 162         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Connection between </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> and </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> refused&quot;</span> <span class="o">%</span> <span class="p">(</span>
 163                 <span class="bp">self</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">_guid</span><span class="p">,</span> <span class="n">rm</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">(),</span> <span class="n">guid</span><span class="p">)</span>
 164         <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 165
 166         <span class="k">return</span> <span class="bp">False</span>
 167 </div>
 168 <div class="viewcode-block" id="OMFNode.do_deploy"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.node.OMFNode.do_deploy">[docs]</a>    <span class="k">def</span> <span class="nf">do_deploy</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 169         <span class="sd">&quot;&quot;&quot; Deploy the RM. It means : Send Xmpp Message Using OMF protocol </span>
 170 <span class="sd">            to enroll the node into the experiment.</span>
 171
 172 <span class="sd">        &quot;&quot;&quot;</span>
 173       <span class="c">## For performance test</span>
 174         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">perf</span><span class="p">:</span>
 175             <span class="bp">self</span><span class="o">.</span><span class="n">begin_deploy_time</span> <span class="o">=</span> <span class="n">tnow</span><span class="p">()</span>
 176             <span class="bp">self</span><span class="o">.</span><span class="n">perf</span> <span class="o">=</span> <span class="bp">False</span>
 177
 178         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppServer&#39;</span><span class="p">):</span>
 179             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;XmppServer is not initialzed. XMPP Connections impossible&quot;</span>
 180             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 181             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 182
 183         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;version&#39;</span><span class="p">):</span>
 184             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Version of OMF is not indicated&quot;</span>
 185             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 186             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 187
 188         <span class="k">if</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppUser&#39;</span><span class="p">)</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPort&#39;</span><span class="p">)</span>
 189                    <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPassword&#39;</span><span class="p">)):</span>
 190             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Credentials are not all initialzed. Default values will be used&quot;</span>
 191             <span class="bp">self</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 192
 193         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span> <span class="p">:</span>
 194             <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span> <span class="o">=</span> <span class="n">OMFAPIFactory</span><span class="o">.</span><span class="n">get_api</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;version&#39;</span><span class="p">),</span>
 195               <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppServer&#39;</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppUser&#39;</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPort&#39;</span><span class="p">),</span>
 196                <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPassword&#39;</span><span class="p">),</span> <span class="n">exp_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">exp_id</span><span class="p">)</span>
 197
 198         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">)</span> <span class="p">:</span>
 199             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Hostname&#39;s value is not initialized&quot;</span>
 200             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 201             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 202
 203         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;version&#39;</span><span class="p">)</span> <span class="o">==</span> <span class="s">&quot;5&quot;</span><span class="p">:</span>
 204             <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span><span class="o">.</span><span class="n">enroll_host</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">))</span>
 205         <span class="k">else</span><span class="p">:</span>
 206             <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span><span class="o">.</span><span class="n">enroll_topic</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">))</span>
 207
 208         <span class="nb">super</span><span class="p">(</span><span class="n">OMFNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_deploy</span><span class="p">()</span>
 209 </div>
 210 <div class="viewcode-block" id="OMFNode.do_release"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.node.OMFNode.do_release">[docs]</a>    <span class="k">def</span> <span class="nf">do_release</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 211         <span class="sd">&quot;&quot;&quot; Clean the RM at the end of the experiment by unenrolling</span>
 212 <span class="sd">        the node from the topic</span>
 213
 214 <span class="sd">        &quot;&quot;&quot;</span>
 215         <span class="kn">from</span> <span class="nn">nepi.resources.omf.application</span> <span class="kn">import</span> <span class="n">OMFApplication</span>
 216         <span class="n">rm_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">OMFApplication</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 217         <span class="k">if</span> <span class="n">rm_list</span><span class="p">:</span>
 218             <span class="k">for</span> <span class="n">rm</span> <span class="ow">in</span> <span class="n">rm_list</span><span class="p">:</span>
 219                 <span class="k">if</span> <span class="n">rm</span><span class="o">.</span><span class="n">state</span> <span class="o">&lt;</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">RELEASED</span><span class="p">:</span>
 220                     <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">release</span><span class="p">)</span>
 221                     <span class="k">return</span>
 222
 223         <span class="kn">from</span> <span class="nn">nepi.resources.omf.interface</span> <span class="kn">import</span> <span class="n">OMFWifiInterface</span>
 224         <span class="n">rm_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">OMFWifiInterface</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 225         <span class="k">if</span> <span class="n">rm_list</span><span class="p">:</span>
 226             <span class="k">for</span> <span class="n">rm</span> <span class="ow">in</span> <span class="n">rm_list</span><span class="p">:</span>
 227                 <span class="k">if</span> <span class="n">rm</span><span class="o">.</span><span class="n">state</span> <span class="o">&lt;</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">RELEASED</span><span class="p">:</span>
 228                     <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">release</span><span class="p">)</span>
 229                     <span class="k">return</span>
 230
 231         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span><span class="p">:</span>
 232             <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;version&#39;</span><span class="p">)</span> <span class="o">==</span> <span class="s">&quot;5&quot;</span><span class="p">:</span>
 233                 <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span><span class="o">.</span><span class="n">release</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">))</span>
 234             <span class="k">else</span><span class="p">:</span>
 235                 <span class="bp">self</span><span class="o">.</span><span class="n">_omf_api</span><span class="o">.</span><span class="n">unenroll_topic</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">))</span>
 236
 237             <span class="n">OMFAPIFactory</span><span class="o">.</span><span class="n">release_api</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;version&#39;</span><span class="p">),</span>
 238               <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppServer&#39;</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppUser&#39;</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPort&#39;</span><span class="p">),</span>
 239                <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;xmppPassword&#39;</span><span class="p">),</span> <span class="n">exp_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">exp_id</span><span class="p">)</span>
 240
 241         <span class="nb">super</span><span class="p">(</span><span class="n">OMFNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_release</span><span class="p">()</span>
 242 </pre></div></div></div>
 243
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