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new file mode 100644 (file)
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@@ -0,0 +1,473 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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+    
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+            
+  <h1>Source code for nepi.resources.linux.netns.netnsemulation</h1><div class="highlight"><pre>
+<span class="c">#</span>
+<span class="c">#    NEPI, a framework to manage network experiments</span>
+<span class="c">#    Copyright (C) 2014 INRIA</span>
+<span class="c">#</span>
+<span class="c">#    This program is free software: you can redistribute it and/or modify</span>
+<span class="c">#    it under the terms of the GNU General Public License version 2 as</span>
+<span class="c">#    published by the Free Software Foundation;</span>
+<span class="c">#</span>
+<span class="c">#    This program is distributed in the hope that it will be useful,</span>
+<span class="c">#    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
+<span class="c">#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
+<span class="c">#    GNU General Public License for more details.</span>
+<span class="c">#</span>
+<span class="c">#    You should have received a copy of the GNU General Public License</span>
+<span class="c">#    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
+<span class="c">#</span>
+<span class="c"># Author: Alina Quereilhac &lt;alina.quereilhac@inria.fr&gt;</span>
+
+<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>
+<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>
+<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> \
+        <span class="n">ResourceState</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.linux.application</span> <span class="kn">import</span> <span class="n">LinuxApplication</span>
+<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>
+<span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsemulation</span> <span class="kn">import</span> <span class="n">NetNSEmulation</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.linux.netns.netnsclient</span> <span class="kn">import</span> <span class="n">LinuxNetNSClient</span>
+
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">import</span> <span class="nn">time</span>
+<span class="kn">import</span> <span class="nn">threading</span>
+
+<span class="nd">@clsinit_copy</span>
+<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>
+    <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::netns::Emulation&quot;</span>
+
+    <span class="nd">@classmethod</span>
+    <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
+        <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>
+            <span class="s">&quot;True to output debugging info for the client-server communication&quot;</span><span class="p">,</span>
+            <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>
+            <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>
+
+        <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>
+            <span class="s">&quot;Enable dumping the remote executed commands to a script &quot;</span>
+            <span class="s">&quot;in order to later reproduce and debug the experiment&quot;</span><span class="p">,</span>
+            <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>
+            <span class="n">default</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
+            <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>
+
+        <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>
+            <span class="s">&quot;Version of netns to install from nsam repo&quot;</span><span class="p">,</span>
+            <span class="n">default</span> <span class="o">=</span> <span class="s">&quot;netns-dev&quot;</span><span class="p">,</span> 
+            <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>
+
+        <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>
+        <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>
+        <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>
+
+    <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>
+        <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>
+        <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>
+
+        <span class="bp">self</span><span class="o">.</span><span class="n">_client</span> <span class="o">=</span> <span class="bp">None</span>
+        <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>
+        <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>
+
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_socket_name</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <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>
+</div>
+<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>
+        <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>
+
+        <span class="c"># upload wrapper python script</span>
+        <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> 
+                <span class="s">&quot;netnswrapper.py&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">upload</span><span class="p">(</span><span class="n">wrapper</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> <span class="s">&quot;netnswrapper.py&quot;</span><span class="p">),</span>
+                <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+        <span class="c"># upload wrapper debug python script</span>
+        <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> 
+                <span class="s">&quot;netnswrapper_debug.py&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">upload</span><span class="p">(</span><span class="n">wrapper_debug</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> <span class="s">&quot;netnswrapper_debug.py&quot;</span><span class="p">),</span>
+                <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+        <span class="c"># upload server python script</span>
+        <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>
+                <span class="s">&quot;netnsserver.py&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">upload</span><span class="p">(</span><span class="n">server</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> <span class="s">&quot;netnsserver.py&quot;</span><span class="p">),</span>
+                <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+
+        <span class="c"># Upload user defined sources</span>
+        <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>
+        <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>
+
+        <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>
+    </div>
+<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>
+        <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>
+                <span class="n">sources</span> <span class="o">=</span> <span class="n">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>
+</div>
+<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>
+        <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>
+        <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>
+
+        <span class="c"># We want to make sure the emulator is running</span>
+        <span class="c"># before the experiment starts.</span>
+        <span class="c"># Run the command as a bash script in background,</span>
+        <span class="c"># in the host ( but wait until the command has</span>
+        <span class="c"># finished to continue )</span>
+        <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>
+        <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>
+
+        <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>
+        <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> 
+                    <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
+                    <span class="n">env</span> <span class="o">=</span> <span class="n">env</span><span class="p">,</span>
+                    <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+        <span class="c"># Run the wrapper </span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_run_in_background</span><span class="p">()</span>
+
+        <span class="c"># Wait until the remote socket is created</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">wait_remote_socket</span><span class="p">()</span>
+</div>
+<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>
+        <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>
+            <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>
+            
+            <span class="c"># ccnd needs to wait until node is deployed and running</span>
+            <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>
+        <span class="k">else</span><span class="p">:</span>
+            <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>
+                <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>
+            
+            <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>
+                <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>
+
+            <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>
+                <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>
+                <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>
+                <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>
+                <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>
+                    <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>
+                    <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>
+                    <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>
+
+                <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>
+                <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>
+
+            <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>
+                <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>
+
+            <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>
+                <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>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
+
+            <span class="c"># Create client</span>
+            <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>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">set_ready</span><span class="p">()</span>
+</div>
+<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>
+        <span class="sd">&quot;&quot;&quot; Starts  execution execution</span>
+
+<span class="sd">        &quot;&quot;&quot;</span>
+        <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>
+
+        <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>
+            <span class="bp">self</span><span class="o">.</span><span class="n">set_started</span><span class="p">()</span>
+        <span class="k">else</span><span class="p">:</span>
+            <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>
+            <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>
+            <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+</div>
+<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>
+        <span class="sd">&quot;&quot;&quot; Stops simulation execution</span>
+
+<span class="sd">        &quot;&quot;&quot;</span>
+        <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>
+            <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
+</div>
+<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>
+        <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>
+
+        <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>
+        <span class="k">if</span> <span class="n">tear_down</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">execute</span><span class="p">(</span><span class="n">tear_down</span><span class="p">)</span>
+
+        <span class="bp">self</span><span class="o">.</span><span class="n">do_stop</span><span class="p">()</span>
+        <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>
+        <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>
+        
+        <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>
+</div>
+    <span class="nd">@property</span>
+    <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span> 
+
+        <span class="c">#command.append(&quot;sudo&quot;)</span>
+        <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>
+        <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> \
+                <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>
+
+        <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>
+            <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>
+
+        <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>
+            <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>
+
+        <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>
+        <span class="k">return</span> <span class="n">command</span>
+
+    <span class="nd">@property</span>
+    <span class="k">def</span> <span class="nf">_dependencies</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <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>
+            <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>
+        <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>
+            <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>
+        <span class="k">return</span> <span class="s">&quot;&quot;</span>
+
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/netns&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <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>
+        <span class="k">return</span> <span class="n">version</span> <span class="ow">or</span> <span class="s">&quot;dev&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/python-unshare&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="s">&quot;dev&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="s">&quot;http://nepi.inria.fr/code/python-passfd&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <span class="k">return</span> <span class="s">&quot;dev&quot;</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <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> \
+                    <span class="o">%</span> <span class="p">{</span>
+                        <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>
+                      <span class="p">}</span>
+
+        <span class="k">return</span> <span class="n">location</span>
+</div>
+    <span class="nd">@property</span>
+<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>
+        <span class="n">location</span> <span class="o">=</span> <span class="s">&quot;${SRC}/python_unshare/</span><span class="si">%(version)s</span><span class="s">&quot;</span> \
+                    <span class="o">%</span> <span class="p">{</span>
+                        <span class="s">&quot;version&quot;</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_unshare_version</span><span class="p">,</span>
+                      <span class="p">}</span>
+
+        <span class="k">return</span> <span class="n">location</span>
+</div>
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxNetNSEmulation.python_passfd_src"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsemulation.LinuxNetNSEmulation.python_passfd_src">[docs]</a>    <span class="k">def</span> <span class="nf">python_passfd_src</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="n">location</span> <span class="o">=</span> <span class="s">&quot;${SRC}/python_passfd/</span><span class="si">%(version)s</span><span class="s">&quot;</span> \
+                    <span class="o">%</span> <span class="p">{</span>
+                        <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>
+                      <span class="p">}</span>
+
+        <span class="k">return</span> <span class="n">location</span>
+</div>
+<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>
+        <span class="n">clone_cmd</span> <span class="o">=</span> <span class="p">(</span>
+                <span class="c"># Test if alredy cloned</span>
+                <span class="s">&quot; ( &quot;</span>
+                <span class="s">&quot;  ( &quot;</span>
+                <span class="s">&quot;    ( test -d </span><span class="si">%(src)s</span><span class="s"> ) &quot;</span>
+                <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>
+                <span class="s">&quot;  ) &quot;</span>
+                <span class="s">&quot; ) &quot;</span>
+                <span class="s">&quot;  || &quot;</span> 
+                <span class="c"># clone source code</span>
+                <span class="s">&quot; ( &quot;</span>
+                <span class="s">&quot;   mkdir -p </span><span class="si">%(src)s</span><span class="s"> &amp;&amp; &quot;</span>
+                <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>
+                <span class="s">&quot; ) &quot;</span>
+             <span class="p">)</span> <span class="o">%</span> <span class="p">{</span>
+                    <span class="s">&quot;repo&quot;</span><span class="p">:</span> <span class="n">repo</span><span class="p">,</span>
+                    <span class="s">&quot;src&quot;</span><span class="p">:</span> <span class="n">src</span><span class="p">,</span>
+                    <span class="s">&quot;name&quot;</span><span class="p">:</span> <span class="n">name</span><span class="p">,</span>
+                 <span class="p">}</span>
+
+        <span class="k">return</span> <span class="n">clone_cmd</span>
+</div>
+    <span class="nd">@property</span>
+    <span class="k">def</span> <span class="nf">_build</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <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> 
+                <span class="bp">self</span><span class="o">.</span><span class="n">netns_src</span><span class="p">)</span>
+        <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> 
+                <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>
+        <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> 
+                <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>
+
+        <span class="n">build_cmd</span> <span class="o">=</span> <span class="p">(</span>
+                <span class="c"># Netns installation</span>
+                <span class="s">&quot;( </span><span class="si">%(netns_clone)s</span><span class="s"> )&quot;</span>
+                <span class="s">&quot;  &amp;&amp; &quot;</span>
+                <span class="s">&quot;( </span><span class="si">%(python_unshare_clone)s</span><span class="s"> )&quot;</span>
+                <span class="s">&quot;  &amp;&amp; &quot;</span>
+                <span class="s">&quot;( </span><span class="si">%(python_passfd_clone)s</span><span class="s"> )&quot;</span>
+             <span class="p">)</span> <span class="o">%</span> <span class="p">{</span> 
+                    <span class="s">&quot;netns_clone&quot;</span><span class="p">:</span> <span class="n">netns_clone</span><span class="p">,</span>
+                    <span class="s">&quot;python_unshare_clone&quot;</span><span class="p">:</span> <span class="n">python_unshare_clone</span><span class="p">,</span>  
+                    <span class="s">&quot;python_passfd_clone&quot;</span><span class="p">:</span> <span class="n">python_passfd_clone</span><span class="p">,</span>  
+                 <span class="p">}</span>
+
+        <span class="k">return</span> <span class="n">build_cmd</span>
+
+    <span class="nd">@property</span>
+    <span class="k">def</span> <span class="nf">_environment</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="n">env</span> <span class="o">=</span> <span class="p">[]</span>
+        <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> 
+                    <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>
+                    <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>
+                    <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>
+                 <span class="p">})</span>
+
+        <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> 
+
+<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>
+        <span class="sd">&quot;&quot;&quot;</span>
+<span class="sd">        Replace all special path tags with shell-escaped actual paths.</span>
+<span class="sd">        &quot;&quot;&quot;</span>
+        <span class="k">return</span> <span class="p">(</span> <span class="n">command</span>
+            <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>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${LIB}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">lib_dir</span><span class="p">)</span>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${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>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${SRC}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">)</span>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${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>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${EXP}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">exp_dir</span><span class="p">)</span>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${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>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${APP_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">)</span>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${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>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${NODE_HOME}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">node_home</span><span class="p">)</span>
+            <span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&quot;${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>
+            <span class="p">)</span>
+</div>
+<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>
+        <span class="c"># TODO: Validate!</span>
+        <span class="k">return</span> <span class="bp">True</span>
+</div>
+<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>
+        <span class="sd">&quot;&quot;&quot; Waits until the remote socket is created</span>
+<span class="sd">        &quot;&quot;&quot;</span>
+        <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>
+
+        <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>
+            <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> 
+                    <span class="n">with_lock</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+            <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>
+                <span class="k">break</span>
+        <span class="k">else</span><span class="p">:</span>
+            <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> \
+                    <span class="bp">self</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">)</span>
+    
+</pre></div></div></div>
+
+          </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="../../../../../genindex.html" title="General Index"
+             >index</a></li>
+        <li class="right" >
+          <a href="../../../../../py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li><a href="../../../../../index.html">NEPI 3.0 documentation</a> &raquo;</li>
+          <li><a href="../../../../index.html" >Module code</a> &raquo;</li> 
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+    </div>
+    <div class="footer">
+        &copy; Copyright 2014, Alina Quereilhac, Lucia Guevgeozian Odizzio, Julien Tribino.
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