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  66   <h1>Source code for nepi.resources.linux.ccn.ccnping</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
  85 <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><span class="p">,</span> <span class="n">Types</span>
  86 <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> \
  87         <span class="n">ResourceState</span>
  88 <span class="kn">from</span> <span class="nn">nepi.resources.linux.ccn.ccnpingserver</span> <span class="kn">import</span> <span class="n">LinuxCCNPingServer</span>
  89 <span class="kn">from</span> <span class="nn">nepi.util.timefuncs</span> <span class="kn">import</span> <span class="n">tnow</span><span class="p">,</span> <span class="n">tdiffsec</span>
  90
  91 <span class="kn">import</span> <span class="nn">os</span>
  92
  93 <span class="nd">@clsinit_copy</span>
  94 <div class="viewcode-block" id="LinuxCCNPing"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ccn.html#nepi.resources.linux.ccn.ccnping.LinuxCCNPing">[docs]</a><span class="k">class</span> <span class="nc">LinuxCCNPing</span><span class="p">(</span><span class="n">LinuxCCNPingServer</span><span class="p">):</span>
  95     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::CCNPing&quot;</span>
  96
  97     <span class="nd">@classmethod</span>
  98     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
  99         <span class="n">interval</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;i&quot;</span><span class="p">,</span>
 100             <span class="s">&quot;Set ping interval in seconds (minimum 0.10 second) &quot;</span><span class="p">,</span>
 101             <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">,</span>
 102             <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 103
 104         <span class="n">count</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;c&quot;</span><span class="p">,</span>
 105             <span class="s">&quot;Total number of pings&quot;</span><span class="p">,</span>
 106             <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Double</span><span class="p">,</span>
 107             <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 108
 109         <span class="n">number</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;n&quot;</span><span class="p">,</span>
 110             <span class="s">&quot;Set the starting number, the number is incremented by 1 after each Interest &quot;</span><span class="p">,</span>
 111             <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">,</span>
 112             <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 113
 114         <span class="n">prefix</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;prefix&quot;</span><span class="p">,</span>
 115             <span class="s">&quot;Prefix to serve content (e.g. ccnx:/name/prefix)&quot;</span><span class="p">,</span>
 116             <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 117
 118         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">interval</span><span class="p">)</span>
 119         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">count</span><span class="p">)</span>
 120         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">number</span><span class="p">)</span>
 121         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span>
 122
 123     <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>
 124         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxCCNPing</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>
 125         <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">&quot;ccnping-</span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span>
 126
 127     <span class="nd">@property</span>
 128 <div class="viewcode-block" id="LinuxCCNPing.ccnpingserver"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ccn.html#nepi.resources.linux.ccn.ccnping.LinuxCCNPing.ccnpingserver">[docs]</a>    <span class="k">def</span> <span class="nf">ccnpingserver</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 129         <span class="n">ccnpingserver</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">LinuxCCNPingServer</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 130         <span class="k">if</span> <span class="n">ccnpingserver</span><span class="p">:</span> <span class="k">return</span> <span class="n">ccnpingserver</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 131         <span class="k">return</span> <span class="bp">None</span>
 132 </div>
 133 <div class="viewcode-block" id="LinuxCCNPing.do_start"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ccn.html#nepi.resources.linux.ccn.ccnping.LinuxCCNPing.do_start">[docs]</a>    <span class="k">def</span> <span class="nf">do_start</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 134         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">ccnpingserver</span> <span class="ow">or</span> \
 135                 <span class="bp">self</span><span class="o">.</span><span class="n">ccnpingserver</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">STARTED</span><span class="p">:</span>
 136             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;---- RESCHEDULING START----  ccnpingserver state </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> \
 137                     <span class="bp">self</span><span class="o">.</span><span class="n">ccnpingserver</span><span class="o">.</span><span class="n">state</span> <span class="p">)</span>
 138             <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">start</span><span class="p">)</span>
 139         <span class="k">else</span><span class="p">:</span>
 140             <span class="nb">super</span><span class="p">(</span><span class="n">LinuxCCNPing</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_start</span><span class="p">()</span>
 141  </div>
 142     <span class="nd">@property</span>
 143     <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 144         <span class="n">args</span> <span class="o">=</span> <span class="p">[]</span>
 145         <span class="n">args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;ccnping&quot;</span><span class="p">)</span>
 146         <span class="n">args</span><span class="o">.</span><span class="n">append</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">&quot;prefix&quot;</span><span class="p">))</span>
 147         <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">&quot;c&quot;</span><span class="p">):</span>
 148             <span class="n">args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-c </span><span class="si">%d</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;c&quot;</span><span class="p">))</span>
 149         <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">&quot;n&quot;</span><span class="p">):</span>
 150             <span class="n">args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-n </span><span class="si">%d</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;n&quot;</span><span class="p">))</span>
 151         <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">&quot;i&quot;</span><span class="p">):</span>
 152             <span class="n">args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-i </span><span class="si">%.2f</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;i&quot;</span><span class="p">))</span>
 153
 154         <span class="n">command</span> <span class="o">=</span> <span class="s">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
 155
 156         <span class="k">return</span> <span class="n">command</span>
 157
 158 <div class="viewcode-block" id="LinuxCCNPing.valid_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ccn.html#nepi.resources.linux.ccn.ccnping.LinuxCCNPing.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>
 159         <span class="c"># TODO: Validate!</span>
 160         <span class="k">return</span> <span class="bp">True</span>
 161 </pre></div></div></div>
 162
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