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+ <h1>Source code for nepi.resources.linux.netns.netnsclient</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 <http://www.gnu.org/licenses/>.</span>
+<span class="c">#</span>
+<span class="c"># Author: Alina Quereilhac <alina.quereilhac@inria.fr></span>
+
+<span class="kn">import</span> <span class="nn">base64</span>
+<span class="kn">import</span> <span class="nn">cPickle</span>
+<span class="kn">import</span> <span class="nn">errno</span>
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">import</span> <span class="nn">socket</span>
+<span class="kn">import</span> <span class="nn">time</span>
+<span class="kn">import</span> <span class="nn">weakref</span>
+
+<span class="kn">from</span> <span class="nn">optparse</span> <span class="kn">import</span> <span class="n">OptionParser</span><span class="p">,</span> <span class="n">SUPPRESS_HELP</span>
+
+<span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsclient</span> <span class="kn">import</span> <span class="n">NetNSClient</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsserver</span> <span class="kn">import</span> <span class="n">NetNSWrapperMessage</span>
+
+<div class="viewcode-block" id="LinuxNetNSClient"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient">[docs]</a><span class="k">class</span> <span class="nc">LinuxNetNSClient</span><span class="p">(</span><span class="n">NetNSClient</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">emulation</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">LinuxNetNSClient</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">()</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_emulation</span> <span class="o">=</span> <span class="n">weakref</span><span class="o">.</span><span class="n">ref</span><span class="p">(</span><span class="n">emulation</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">_socat_proc</span> <span class="o">=</span> <span class="bp">None</span>
+
+ <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxNetNSClient.emulation"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.emulation">[docs]</a> <span class="k">def</span> <span class="nf">emulation</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">_emulation</span><span class="p">()</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.send_msg"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.send_msg">[docs]</a> <span class="k">def</span> <span class="nf">send_msg</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">msg_type</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="p">[</span><span class="n">msg_type</span><span class="p">,</span> <span class="n">args</span><span class="p">,</span> <span class="n">kwargs</span><span class="p">]</span>
+
+ <span class="k">def</span> <span class="nf">encode</span><span class="p">(</span><span class="n">item</span><span class="p">):</span>
+ <span class="n">item</span> <span class="o">=</span> <span class="n">cPickle</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">item</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">base64</span><span class="o">.</span><span class="n">b64encode</span><span class="p">(</span><span class="n">item</span><span class="p">)</span>
+
+ <span class="n">encoded</span> <span class="o">=</span> <span class="s">"|"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">map</span><span class="p">(</span><span class="n">encode</span><span class="p">,</span> <span class="n">msg</span><span class="p">))</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">emulation</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"hostname"</span><span class="p">)</span> <span class="ow">in</span> <span class="p">[</span><span class="s">'localhost'</span><span class="p">,</span> <span class="s">'127.0.0.1'</span><span class="p">]:</span>
+ <span class="n">sock</span> <span class="o">=</span> <span class="n">socket</span><span class="o">.</span><span class="n">socket</span><span class="p">(</span><span class="n">socket</span><span class="o">.</span><span class="n">AF_UNIX</span><span class="p">,</span> <span class="n">socket</span><span class="o">.</span><span class="n">SOCK_STREAM</span><span class="p">)</span>
+ <span class="n">sock</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">emulation</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">)</span>
+ <span class="n">sock</span><span class="o">.</span><span class="n">send</span><span class="p">(</span><span class="s">"</span><span class="si">%s</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">encoded</span><span class="p">)</span>
+ <span class="n">reply</span> <span class="o">=</span> <span class="n">sock</span><span class="o">.</span><span class="n">recv</span><span class="p">(</span><span class="mi">1024</span><span class="p">)</span>
+ <span class="n">sock</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">(</span> <span class="s">"python -c 'import socket;"</span>
+ <span class="s">"sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM);"</span>
+ <span class="s">"sock.connect(</span><span class="se">\"</span><span class="si">%(socket_addr)s</span><span class="se">\"</span><span class="s">);"</span>
+ <span class="s">"msg = </span><span class="se">\"</span><span class="si">%(encoded_message)s</span><span class="se">\\</span><span class="s">n</span><span class="se">\"</span><span class="s">;"</span>
+ <span class="s">"sock.send(msg);"</span>
+ <span class="s">"reply = sock.recv(1024);"</span>
+ <span class="s">"sock.close();"</span>
+ <span class="s">"print reply'"</span><span class="p">)</span> <span class="o">%</span> <span class="p">{</span>
+ <span class="s">"encoded_message"</span><span class="p">:</span> <span class="n">encoded</span><span class="p">,</span>
+ <span class="s">"socket_addr"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">emulation</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">,</span>
+ <span class="p">}</span>
+
+ <span class="p">(</span><span class="n">reply</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">emulation</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">with_lock</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="p">(</span><span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">())</span> <span class="ow">or</span> <span class="n">reply</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> <span class="o">==</span> <span class="s">""</span><span class="p">:</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="p">(</span><span class="s">" Couldn't connect to remote socket </span><span class="si">%s</span><span class="s"> - REPLY: </span><span class="si">%s</span><span class="s"> "</span>
+ <span class="s">"- ERROR: </span><span class="si">%s</span><span class="s"> "</span><span class="p">)</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">emulation</span><span class="o">.</span><span class="n">remote_socket</span><span class="p">,</span> <span class="n">reply</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">emulation</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">reply</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><span class="p">)</span>
+
+ <span class="n">reply</span> <span class="o">=</span> <span class="n">cPickle</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">base64</span><span class="o">.</span><span class="n">b64decode</span><span class="p">(</span><span class="n">reply</span><span class="p">))</span>
+
+ <span class="k">return</span> <span class="n">reply</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.create"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.create">[docs]</a> <span class="k">def</span> <span class="nf">create</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">CREATE</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.invoke"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.invoke">[docs]</a> <span class="k">def</span> <span class="nf">invoke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">INVOKE</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.set"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.set">[docs]</a> <span class="k">def</span> <span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">SET</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.get"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.get">[docs]</a> <span class="k">def</span> <span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">GET</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.flush"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.flush">[docs]</a> <span class="k">def</span> <span class="nf">flush</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">FLUSH</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxNetNSClient.shutdown"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.netns.html#nepi.resources.linux.netns.netnsclient.LinuxNetNSClient.shutdown">[docs]</a> <span class="k">def</span> <span class="nf">shutdown</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">send_msg</span><span class="p">(</span><span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">SHUTDOWN</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="k">except</span><span class="p">:</span>
+ <span class="k">pass</span>
+
+ <span class="k">return</span> <span class="bp">None</span>
+</pre></div></div></div>
+
+ </div>
+ </div>
+ </div>
+ <div class="clearer"></div>
+ </div>
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+ <h3>Navigation</h3>
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