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  66   <h1>Source code for nepi.resources.linux.netns.netnsemulation</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) 2014 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.trace</span> <span class="kn">import</span> <span class="n">Trace</span><span class="p">,</span> <span class="n">TraceAttr</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.resources.linux.application</span> <span class="kn">import</span> <span class="n">LinuxApplication</span>
  90 <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>
  91 <span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsemulation</span> <span class="kn">import</span> <span class="n">NetNSEmulation</span>
  92 <span class="kn">from</span> <span class="nn">nepi.resources.linux.netns.netnsclient</span> <span class="kn">import</span> <span class="n">LinuxNetNSClient</span>
  93
  94 <span class="kn">import</span> <span class="nn">os</span>
  95 <span class="kn">import</span> <span class="nn">time</span>
  96 <span class="kn">import</span> <span class="nn">threading</span>
  97
  98 <span class="nd">@clsinit_copy</span>
  99 <div class="viewcode-block" id="LinuxNetNSEmulation"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation">[docs]</a><span class="k">class</span> <span class="nc">LinuxNetNSEmulation</span><span class="p">(</span><span class="n">LinuxApplication</span><span class="p">,</span> <span class="n">NetNSEmulation</span><span class="p">):</span>
 100     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::netns::Emulation&quot;</span>
 101
 102     <span class="nd">@classmethod</span>
 103     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
 104         <span class="n">verbose</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;verbose&quot;</span><span class="p">,</span>
 105             <span class="s">&quot;True to output debugging info for the client-server communication&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">Bool</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">enable_dump</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;enableDump&quot;</span><span class="p">,</span>
 110             <span class="s">&quot;Enable dumping the remote executed commands to a script &quot;</span>
 111             <span class="s">&quot;in order to later reproduce and debug the experiment&quot;</span><span class="p">,</span>
 112             <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Bool</span><span class="p">,</span>
 113             <span class="n">default</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
 114             <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>
 115
 116         <span class="n">version</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;version&quot;</span><span class="p">,</span>
 117             <span class="s">&quot;Version of netns to install from nsam repo&quot;</span><span class="p">,</span>
 118             <span class="n">default</span> <span class="o">=</span> <span class="s">&quot;netns-dev&quot;</span><span class="p">,</span>
 119             <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>
 120
 121         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">enable_dump</span><span class="p">)</span>
 122         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">verbose</span><span class="p">)</span>
 123         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">version</span><span class="p">)</span>
 124
 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="n">LinuxApplication</span><span class="o">.</span><span class="n">__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>
 127         <span class="n">NetNSEmulation</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
 128
 129         <span class="bp">self</span><span class="o">.</span><span class="n">_client</span> <span class="o">=</span> <span class="bp">None</span>
 130         <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">&quot;netns-emu-</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>
 131         <span class="bp">self</span><span class="o">.</span><span class="n">_socket_name</span> <span class="o">=</span> <span class="s">&quot;netns-</span><span class="si">%s</span><span class="s">.sock&quot;</span> <span class="o">%</span> <span class="n">os</span><span class="o">.</span><span class="n">urandom</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s">&#39;hex&#39;</span><span class="p">)</span>
 132
 133     <span class="nd">@property</span>
 134 <div class="viewcode-block" id="LinuxNetNSEmulation.socket_name"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.socket_name">[docs]</a>    <span class="k">def</span> <span class="nf">socket_name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 135         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_socket_name</span>
 136 </div>
 137     <span class="nd">@property</span>
 138 <div class="viewcode-block" id="LinuxNetNSEmulation.remote_socket"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.remote_socket">[docs]</a>    <span class="k">def</span> <span class="nf">remote_socket</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 139         <span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">socket_name</span><span class="p">)</span>
 140 </div>
 141 <div class="viewcode-block" id="LinuxNetNSEmulation.upload_sources"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.upload_sources">[docs]</a>    <span class="k">def</span> <span class="nf">upload_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 142         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netnswrapper&quot;</span><span class="p">))</span>
 143
 144         <span class="c"># upload wrapper python script</span>
 145         <span class="n">wrapper</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;netns&quot;</span><span class="p">,</span>
 146                 <span class="s">&quot;netnswrapper.py&quot;</span><span class="p">)</span>
 147
 148         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">wrapper</span><span class="p">,</span>
 149                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netnswrapper&quot;</span><span class="p">,</span> <span class="s">&quot;netnswrapper.py&quot;</span><span class="p">),</span>
 150                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 151
 152         <span class="c"># upload wrapper debug python script</span>
 153         <span class="n">wrapper_debug</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;netns&quot;</span><span class="p">,</span>
 154                 <span class="s">&quot;netnswrapper_debug.py&quot;</span><span class="p">)</span>
 155
 156         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">wrapper_debug</span><span class="p">,</span>
 157                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netnswrapper&quot;</span><span class="p">,</span> <span class="s">&quot;netnswrapper_debug.py&quot;</span><span class="p">),</span>
 158                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 159
 160         <span class="c"># upload server python script</span>
 161         <span class="n">server</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;..&quot;</span><span class="p">,</span> <span class="s">&quot;netns&quot;</span><span class="p">,</span>
 162                 <span class="s">&quot;netnsserver.py&quot;</span><span class="p">)</span>
 163
 164         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">server</span><span class="p">,</span>
 165                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netnswrapper&quot;</span><span class="p">,</span> <span class="s">&quot;netnsserver.py&quot;</span><span class="p">),</span>
 166                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 167
 168         <span class="c"># Upload user defined sources</span>
 169         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netns&quot;</span><span class="p">))</span>
 170         <span class="n">src_dir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">,</span> <span class="s">&quot;netns&quot;</span><span class="p">)</span>
 171
 172         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxNetNSEmulation</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">upload_sources</span><span class="p">(</span><span class="n">src_dir</span> <span class="o">=</span> <span class="n">src_dir</span><span class="p">)</span>
 173     </div>
 174 <div class="viewcode-block" id="LinuxNetNSEmulation.upload_extra_sources"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.upload_extra_sources">[docs]</a>    <span class="k">def</span> <span class="nf">upload_extra_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sources</span> <span class="o">=</span> <span class="bp">None</span><span class="p">,</span> <span class="n">src_dir</span> <span class="o">=</span> <span class="bp">None</span><span class="p">):</span>
 175         <span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">LinuxNetNSEmulation</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">upload_sources</span><span class="p">(</span>
 176                 <span class="n">sources</span> <span class="o">=</span> <span class="n">sources</span><span class="p">,</span>
 177                 <span class="n">src_dir</span> <span class="o">=</span> <span class="n">src_dir</span><span class="p">)</span>
 178 </div>
 179 <div class="viewcode-block" id="LinuxNetNSEmulation.upload_start_command"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.upload_start_command">[docs]</a>    <span class="k">def</span> <span class="nf">upload_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 180         <span class="n">command</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;command&quot;</span><span class="p">)</span>
 181         <span class="n">env</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;env&quot;</span><span class="p">)</span>
 182
 183         <span class="c"># We want to make sure the emulator is running</span>
 184         <span class="c"># before the experiment starts.</span>
 185         <span class="c"># Run the command as a bash script in background,</span>
 186         <span class="c"># in the host ( but wait until the command has</span>
 187         <span class="c"># finished to continue )</span>
 188         <span class="n">env</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
 189         <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
 190
 191         <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">&quot;start.sh&quot;</span><span class="p">)</span>
 192         <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload_command</span><span class="p">(</span><span class="n">command</span><span class="p">,</span>
 193                     <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
 194                     <span class="n">env</span> <span class="o">=</span> <span class="n">env</span><span class="p">,</span>
 195                     <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 196
 197         <span class="c"># Run the wrapper </span>
 198         <span class="bp">self</span><span class="o">.</span><span class="n">_run_in_background</span><span class="p">()</span>
 199
 200         <span class="c"># Wait until the remote socket is created</span>
 201         <span class="bp">self</span><span class="o">.</span><span class="n">wait_remote_socket</span><span class="p">()</span>
 202 </div>
 203 <div class="viewcode-block" id="LinuxNetNSEmulation.do_deploy"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.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>
 204         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</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">READY</span><span class="p">:</span>
 205             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;---- RESCHEDULING DEPLOY ---- node state </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">node</span><span class="o">.</span><span class="n">state</span> <span class="p">)</span>
 206
 207             <span class="c"># ccnd needs to wait until node is deployed and running</span>
 208             <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">deploy</span><span class="p">)</span>
 209         <span class="k">else</span><span class="p">:</span>
 210             <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">&quot;command&quot;</span><span class="p">):</span>
 211                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;command&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_command</span><span class="p">)</span>
 212
 213             <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">&quot;depends&quot;</span><span class="p">):</span>
 214                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;depends&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dependencies</span><span class="p">)</span>
 215
 216             <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;sources&quot;</span><span class="p">):</span>
 217                 <span class="n">sources</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;sources&quot;</span><span class="p">)</span>
 218                 <span class="n">source</span> <span class="o">=</span> <span class="n">sources</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&quot; &quot;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
 219                 <span class="n">basename</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
 220                 <span class="n">version</span> <span class="o">=</span> <span class="p">(</span> <span class="n">basename</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;.tar.gz&quot;</span><span class="p">,</span> <span class="s">&quot;&quot;</span><span class="p">)</span>
 221                     <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;.tar&quot;</span><span class="p">,</span><span class="s">&quot;&quot;</span><span class="p">)</span>
 222                     <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;.gz&quot;</span><span class="p">,</span><span class="s">&quot;&quot;</span><span class="p">)</span>
 223                     <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;.zip&quot;</span><span class="p">,</span><span class="s">&quot;&quot;</span><span class="p">)</span> <span class="p">)</span>
 224
 225                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;version&quot;</span><span class="p">,</span> <span class="n">version</span><span class="p">)</span>
 226                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;sources&quot;</span><span class="p">,</span> <span class="n">source</span><span class="p">)</span>
 227
 228             <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">&quot;build&quot;</span><span class="p">):</span>
 229                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;build&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_build</span><span class="p">)</span>
 230
 231             <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">&quot;env&quot;</span><span class="p">):</span>
 232                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;env&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_environment</span><span class="p">)</span>
 233
 234             <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 235             <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
 236
 237             <span class="c"># Create client</span>
 238             <span class="bp">self</span><span class="o">.</span><span class="n">_client</span> <span class="o">=</span> <span class="n">LinuxNetNSClient</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
 239
 240             <span class="bp">self</span><span class="o">.</span><span class="n">set_ready</span><span class="p">()</span>
 241 </div>
 242 <div class="viewcode-block" id="LinuxNetNSEmulation.do_start"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.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>
 243         <span class="sd">&quot;&quot;&quot; Starts  execution execution</span>
 244
 245 <span class="sd">        &quot;&quot;&quot;</span>
 246         <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Starting&quot;</span><span class="p">)</span>
 247
 248         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">READY</span><span class="p">:</span>
 249             <span class="bp">self</span><span class="o">.</span><span class="n">set_started</span><span class="p">()</span>
 250         <span class="k">else</span><span class="p">:</span>
 251             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot; Failed to execute command &#39;</span><span class="si">%s</span><span class="s">&#39;&quot;</span> <span class="o">%</span> <span class="n">command</span>
 252             <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> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
 253             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 254 </div>
 255 <div class="viewcode-block" id="LinuxNetNSEmulation.do_stop"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.do_stop">[docs]</a>    <span class="k">def</span> <span class="nf">do_stop</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 256         <span class="sd">&quot;&quot;&quot; Stops simulation execution</span>
 257
 258 <span class="sd">        &quot;&quot;&quot;</span>
 259         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">STARTED</span><span class="p">:</span>
 260             <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
 261 </div>
 262 <div class="viewcode-block" id="LinuxNetNSEmulation.do_release"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.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>
 263         <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Releasing resource&quot;</span><span class="p">)</span>
 264
 265         <span class="n">tear_down</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;tearDown&quot;</span><span class="p">)</span>
 266         <span class="k">if</span> <span class="n">tear_down</span><span class="p">:</span>
 267             <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">tear_down</span><span class="p">)</span>
 268
 269         <span class="bp">self</span><span class="o">.</span><span class="n">do_stop</span><span class="p">()</span>
 270         <span class="bp">self</span><span class="o">.</span><span class="n">_client</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span>
 271         <span class="n">LinuxApplication</span><span class="o">.</span><span class="n">do_stop</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
 272
 273         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxApplication</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>
 274 </div>
 275     <span class="nd">@property</span>
 276     <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 277         <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
 278
 279         <span class="c">#command.append(&quot;sudo&quot;)</span>
 280         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;PYTHONPATH=$PYTHONPATH:${SRC}/netnswrapper/&quot;</span><span class="p">)</span>
 281         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;python ${SRC}/netnswrapper/netnsserver.py -S </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> \
 282                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">)</span> <span class="p">)</span>
 283
 284         <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;enableDump&quot;</span><span class="p">):</span>
 285             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-D&quot;</span><span class="p">)</span>
 286
 287         <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;verbose&quot;</span><span class="p">):</span>
 288             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-v&quot;</span><span class="p">)</span>
 289
 290         <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">command</span><span class="p">)</span>
 291         <span class="k">return</span> <span class="n">command</span>
 292
 293     <span class="nd">@property</span>
 294     <span class="k">def</span> <span class="nf">_dependencies</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 295         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">use_rpm</span><span class="p">:</span>
 296             <span class="k">return</span> <span class="p">(</span><span class="s">&quot; python python-devel mercurial unzip bridge-utils iproute&quot;</span><span class="p">)</span>
 297         <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">use_deb</span><span class="p">:</span>
 298             <span class="k">return</span> <span class="p">(</span><span class="s">&quot; python python-dev mercurial unzip bridge-utils iproute&quot;</span><span class="p">)</span>
 299         <span class="k">return</span> <span class="s">&quot;&quot;</span>
 300
 301     <span class="nd">@property</span>
 302 <div class="viewcode-block" id="LinuxNetNSEmulation.netns_repo"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.netns_repo">[docs]</a>    <span class="k">def</span> <span class="nf">netns_repo</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 303         <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/netns&quot;</span>
 304 </div>
 305     <span class="nd">@property</span>
 306 <div class="viewcode-block" id="LinuxNetNSEmulation.netns_version"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.netns_version">[docs]</a>    <span class="k">def</span> <span class="nf">netns_version</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 307         <span class="n">version</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;version&quot;</span><span class="p">)</span>
 308         <span class="k">return</span> <span class="n">version</span> <span class="ow">or</span> <span class="s">&quot;dev&quot;</span>
 309 </div>
 310     <span class="nd">@property</span>
 311 <div class="viewcode-block" id="LinuxNetNSEmulation.python_unshare_repo"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_unshare_repo">[docs]</a>    <span class="k">def</span> <span class="nf">python_unshare_repo</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 312         <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/python-unshare&quot;</span>
 313 </div>
 314     <span class="nd">@property</span>
 315 <div class="viewcode-block" id="LinuxNetNSEmulation.python_unshare_version"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_unshare_version">[docs]</a>    <span class="k">def</span> <span class="nf">python_unshare_version</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 316         <span class="k">return</span> <span class="s">&quot;dev&quot;</span>
 317 </div>
 318     <span class="nd">@property</span>
 319 <div class="viewcode-block" id="LinuxNetNSEmulation.python_passfd_repo"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_passfd_repo">[docs]</a>    <span class="k">def</span> <span class="nf">python_passfd_repo</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 320         <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/python-passfd&quot;</span>
 321 </div>
 322     <span class="nd">@property</span>
 323 <div class="viewcode-block" id="LinuxNetNSEmulation.python_passfd_version"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_passfd_version">[docs]</a>    <span class="k">def</span> <span class="nf">python_passfd_version</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 324         <span class="k">return</span> <span class="s">&quot;dev&quot;</span>
 325 </div>
 326     <span class="nd">@property</span>
 327 <div class="viewcode-block" id="LinuxNetNSEmulation.netns_src"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.netns_src">[docs]</a>    <span class="k">def</span> <span class="nf">netns_src</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 328         <span class="n">location</span> <span class="o">=</span> <span class="s">&quot;${SRC}/netns/</span><span class="si">%(version)s</span><span class="s">&quot;</span> \
 329                     <span class="o">%</span> <span class="p">{</span>
 330                         <span class="s">&quot;version&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">netns_version</span><span class="p">,</span>
 331                       <span class="p">}</span>
 332
 333         <span class="k">return</span> <span class="n">location</span>
 334 </div>
 335     <span class="nd">@property</span>
 336 <div class="viewcode-block" id="LinuxNetNSEmulation.python_unshare_src"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_unshare_src">[docs]</a>    <span class="k">def</span> <span class="nf">python_unshare_src</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 337         <span class="n">location</span> <span class="o">=</span> <span class="s">&quot;${SRC}/python_unshare/</span><span class="si">%(version)s</span><span class="s">&quot;</span> \
 338                     <span class="o">%</span> <span class="p">{</span>
 339                         <span class="s">&quot;version&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_unshare_version</span><span class="p">,</span>
 340                       <span class="p">}</span>
 341
 342         <span class="k">return</span> <span class="n">location</span>
 343 </div>
 344     <span class="nd">@property</span>
 345 <div class="viewcode-block" id="LinuxNetNSEmulation.python_passfd_src"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_passfd_src">[docs]</a>    <span class="k">def</span> <span class="nf">python_passfd_src</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 346         <span class="n">location</span> <span class="o">=</span> <span class="s">&quot;${SRC}/python_passfd/</span><span class="si">%(version)s</span><span class="s">&quot;</span> \
 347                     <span class="o">%</span> <span class="p">{</span>
 348                         <span class="s">&quot;version&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_passfd_version</span><span class="p">,</span>
 349                       <span class="p">}</span>
 350
 351         <span class="k">return</span> <span class="n">location</span>
 352 </div>
 353 <div class="viewcode-block" id="LinuxNetNSEmulation.clone_command"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.clone_command">[docs]</a>    <span class="k">def</span> <span class="nf">clone_command</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">src</span><span class="p">):</span>
 354         <span class="n">clone_cmd</span> <span class="o">=</span> <span class="p">(</span>
 355                 <span class="c"># Test if alredy cloned</span>
 356                 <span class="s">&quot; ( &quot;</span>
 357                 <span class="s">&quot;  ( &quot;</span>
 358                 <span class="s">&quot;    ( test -d </span><span class="si">%(src)s</span><span class="s"> ) &quot;</span>
 359                 <span class="s">&quot;   &amp;&amp; echo &#39;</span><span class="si">%(name)s</span><span class="s"> binaries found, nothing to do&#39;&quot;</span>
 360                 <span class="s">&quot;  ) &quot;</span>
 361                 <span class="s">&quot; ) &quot;</span>
 362                 <span class="s">&quot;  || &quot;</span>
 363                 <span class="c"># clone source code</span>
 364                 <span class="s">&quot; ( &quot;</span>
 365                 <span class="s">&quot;   mkdir -p </span><span class="si">%(src)s</span><span class="s"> &amp;&amp; &quot;</span>
 366                 <span class="s">&quot;   hg clone </span><span class="si">%(repo)s</span><span class="s"> </span><span class="si">%(src)s</span><span class="s">&quot;</span>
 367                 <span class="s">&quot; ) &quot;</span>
 368              <span class="p">)</span> <span class="o">%</span> <span class="p">{</span>
 369                     <span class="s">&quot;repo&quot;</span><span class="p">:</span> <span class="n">repo</span><span class="p">,</span>
 370                     <span class="s">&quot;src&quot;</span><span class="p">:</span> <span class="n">src</span><span class="p">,</span>
 371                     <span class="s">&quot;name&quot;</span><span class="p">:</span> <span class="n">name</span><span class="p">,</span>
 372                  <span class="p">}</span>
 373
 374         <span class="k">return</span> <span class="n">clone_cmd</span>
 375 </div>
 376     <span class="nd">@property</span>
 377     <span class="k">def</span> <span class="nf">_build</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 378         <span class="n">netns_clone</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clone_command</span><span class="p">(</span><span class="s">&quot;netns&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">netns_repo</span><span class="p">,</span>
 379                 <span class="bp">self</span><span class="o">.</span><span class="n">netns_src</span><span class="p">)</span>
 380         <span class="n">python_unshare_clone</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clone_command</span><span class="p">(</span><span class="s">&quot;python_unshare&quot;</span><span class="p">,</span>
 381                 <span class="bp">self</span><span class="o">.</span><span class="n">python_unshare_repo</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_unshare_src</span><span class="p">)</span>
 382         <span class="n">python_passfd_clone</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clone_command</span><span class="p">(</span><span class="s">&quot;python_passfd&quot;</span><span class="p">,</span>
 383                 <span class="bp">self</span><span class="o">.</span><span class="n">python_passfd_repo</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_passfd_src</span><span class="p">)</span>
 384
 385         <span class="n">build_cmd</span> <span class="o">=</span> <span class="p">(</span>
 386                 <span class="c"># Netns installation</span>
 387                 <span class="s">&quot;( </span><span class="si">%(netns_clone)s</span><span class="s"> )&quot;</span>
 388                 <span class="s">&quot;  &amp;&amp; &quot;</span>
 389                 <span class="s">&quot;( </span><span class="si">%(python_unshare_clone)s</span><span class="s"> )&quot;</span>
 390                 <span class="s">&quot;  &amp;&amp; &quot;</span>
 391                 <span class="s">&quot;( </span><span class="si">%(python_passfd_clone)s</span><span class="s"> )&quot;</span>
 392              <span class="p">)</span> <span class="o">%</span> <span class="p">{</span>
 393                     <span class="s">&quot;netns_clone&quot;</span><span class="p">:</span> <span class="n">netns_clone</span><span class="p">,</span>
 394                     <span class="s">&quot;python_unshare_clone&quot;</span><span class="p">:</span> <span class="n">python_unshare_clone</span><span class="p">,</span>
 395                     <span class="s">&quot;python_passfd_clone&quot;</span><span class="p">:</span> <span class="n">python_passfd_clone</span><span class="p">,</span>
 396                  <span class="p">}</span>
 397
 398         <span class="k">return</span> <span class="n">build_cmd</span>
 399
 400     <span class="nd">@property</span>
 401     <span class="k">def</span> <span class="nf">_environment</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 402         <span class="n">env</span> <span class="o">=</span> <span class="p">[]</span>
 403         <span class="n">env</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;PYTHONPATH=$PYTHONPAH:</span><span class="si">%(netns_src)s</span><span class="s">/src/:</span><span class="si">%(python_unshare_src)s</span><span class="s">/src:</span><span class="si">%(python_passfd_src)s</span><span class="s">/src}&quot;</span> <span class="o">%</span> <span class="p">{</span>
 404                     <span class="s">&quot;netns_src&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">netns_src</span><span class="p">,</span>
 405                     <span class="s">&quot;python_unshare_src&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_unshare_src</span><span class="p">,</span>
 406                     <span class="s">&quot;python_passfd_src&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_passfd_src</span><span class="p">,</span>
 407                  <span class="p">})</span>
 408
 409         <span class="k">return</span> <span class="s">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">env</span><span class="p">)</span>
 410
 411 <div class="viewcode-block" id="LinuxNetNSEmulation.replace_paths"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.replace_paths">[docs]</a>    <span class="k">def</span> <span class="nf">replace_paths</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">command</span><span class="p">):</span>
 412         <span class="sd">&quot;&quot;&quot;</span>
 413 <span class="sd">        Replace all special path tags with shell-escaped actual paths.</span>
 414 <span class="sd">        &quot;&quot;&quot;</span>
 415         <span class="k">return</span> <span class="p">(</span> <span class="n">command</span>
 416             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${USR}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">usr_dir</span><span class="p">)</span>
 417             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${LIB}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">lib_dir</span><span class="p">)</span>
 418             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${BIN}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">bin_dir</span><span class="p">)</span>
 419             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${SRC}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">)</span>
 420             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${SHARE}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">share_dir</span><span class="p">)</span>
 421             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${EXP}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">exp_dir</span><span class="p">)</span>
 422             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${EXP_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">exp_home</span><span class="p">)</span>
 423             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${APP_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">)</span>
 424             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${RUN_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">)</span>
 425             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${NODE_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">node_home</span><span class="p">)</span>
 426             <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">home_dir</span><span class="p">)</span>
 427             <span class="p">)</span>
 428 </div>
 429 <div class="viewcode-block" id="LinuxNetNSEmulation.valid_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.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>
 430         <span class="c"># TODO: Validate!</span>
 431         <span class="k">return</span> <span class="bp">True</span>
 432 </div>
 433 <div class="viewcode-block" id="LinuxNetNSEmulation.wait_remote_socket"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.wait_remote_socket">[docs]</a>    <span class="k">def</span> <span class="nf">wait_remote_socket</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 434         <span class="sd">&quot;&quot;&quot; Waits until the remote socket is created</span>
 435 <span class="sd">        &quot;&quot;&quot;</span>
 436         <span class="n">command</span> <span class="o">=</span> <span class="s">&quot; [ -e </span><span class="si">%s</span><span class="s"> ] &amp;&amp; echo &#39;DONE&#39; &quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">remote_socket</span>
 437
 438         <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">xrange</span><span class="p">(</span><span class="mi">200</span><span class="p">):</span>
 439             <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="n">retry</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
 440                     <span class="n">with_lock</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 441
 442             <span class="k">if</span> <span class="n">out</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">&quot;DONE&quot;</span><span class="p">)</span> <span class="o">&gt;</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
 443                 <span class="k">break</span>
 444         <span class="k">else</span><span class="p">:</span>
 445             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s">&quot;Remote socket not found at </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> \
 446                     <span class="bp">self</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">)</span>
 447
 448 </pre></div></div></div>
 449
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