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+ <h1>Source code for nepi.resources.netns.netnsserver</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">logging</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">sys</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">netnswrapper</span> <span class="kn">import</span> <span class="n">NetNSWrapper</span>
+
+<div class="viewcode-block" id="NetNSWrapperMessage"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.NetNSWrapperMessage">[docs]</a><span class="k">class</span> <span class="nc">NetNSWrapperMessage</span><span class="p">:</span>
+ <span class="n">CREATE</span> <span class="o">=</span> <span class="s">"CREATE"</span>
+ <span class="n">INVOKE</span> <span class="o">=</span> <span class="s">"INVOKE"</span>
+ <span class="n">SET</span> <span class="o">=</span> <span class="s">"SET"</span>
+ <span class="n">GET</span> <span class="o">=</span> <span class="s">"GET"</span>
+ <span class="n">FLUSH</span> <span class="o">=</span> <span class="s">"FLUSH"</span>
+ <span class="n">SHUTDOWN</span> <span class="o">=</span> <span class="s">"SHUTDOWN"</span>
+</div>
+<div class="viewcode-block" id="handle_message"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.handle_message">[docs]</a><span class="k">def</span> <span class="nf">handle_message</span><span class="p">(</span><span class="n">wrapper</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">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">SHUTDOWN</span><span class="p">:</span>
+ <span class="n">wrapper</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span>
+
+ <span class="k">return</span> <span class="s">"BYEBYE"</span>
+
+ <span class="k">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">CREATE</span><span class="p">:</span>
+ <span class="n">clazzname</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">wrapper</span><span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">clazzname</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">INVOKE</span><span class="p">:</span>
+ <span class="n">uuid</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+ <span class="n">operation</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">wrapper</span><span class="o">.</span><span class="n">invoke</span><span class="p">(</span><span class="n">uuid</span><span class="p">,</span> <span class="n">operation</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">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">GET</span><span class="p">:</span>
+ <span class="n">uuid</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">wrapper</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">uuid</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">SET</span><span class="p">:</span>
+ <span class="n">uuid</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+ <span class="n">value</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">wrapper</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">uuid</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">FLUSH</span><span class="p">:</span>
+ <span class="c"># Forces flushing output and error streams.</span>
+ <span class="c"># NS-3 output will stay unflushed until the program exits or </span>
+ <span class="c"># explicit invocation flush is done</span>
+ <span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+ <span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+
+ <span class="n">wrapper</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">"FLUSHED"</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="s">"FLUSHED"</span>
+</div>
+<div class="viewcode-block" id="create_socket"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.create_socket">[docs]</a><span class="k">def</span> <span class="nf">create_socket</span><span class="p">(</span><span class="n">socket_name</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">bind</span><span class="p">(</span><span class="n">socket_name</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">sock</span>
+</div>
+<div class="viewcode-block" id="recv_msg"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.recv_msg">[docs]</a><span class="k">def</span> <span class="nf">recv_msg</span><span class="p">(</span><span class="n">conn</span><span class="p">):</span>
+ <span class="n">msg</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="n">chunk</span> <span class="o">=</span> <span class="s">''</span>
+
+ <span class="k">while</span> <span class="s">'</span><span class="se">\n</span><span class="s">'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">chunk</span><span class="p">:</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">chunk</span> <span class="o">=</span> <span class="n">conn</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="k">except</span> <span class="p">(</span><span class="ne">OSError</span><span class="p">,</span> <span class="n">socket</span><span class="o">.</span><span class="n">error</span><span class="p">),</span> <span class="n">e</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">e</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="n">errno</span><span class="o">.</span><span class="n">EINTR</span><span class="p">:</span>
+ <span class="k">raise</span>
+ <span class="c"># Ignore eintr errors</span>
+ <span class="k">continue</span>
+
+ <span class="k">if</span> <span class="n">chunk</span><span class="p">:</span>
+ <span class="n">msg</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">chunk</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="c"># empty chunk = EOF</span>
+ <span class="k">break</span>
+
+ <span class="n">msg</span> <span class="o">=</span> <span class="s">''</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
+
+ <span class="c"># The message is formatted as follows:</span>
+ <span class="c"># MESSAGE_TYPE|args|kwargs</span>
+ <span class="c">#</span>
+ <span class="c"># where MESSAGE_TYPE, args and kwargs are pickld and enoded in base64</span>
+
+ <span class="k">def</span> <span class="nf">decode</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">base64</span><span class="o">.</span><span class="n">b64decode</span><span class="p">(</span><span class="n">item</span><span class="p">)</span><span class="o">.</span><span class="n">rstrip</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">cPickle</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">item</span><span class="p">)</span>
+
+ <span class="n">decoded</span> <span class="o">=</span> <span class="nb">map</span><span class="p">(</span><span class="n">decode</span><span class="p">,</span> <span class="n">msg</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">"|"</span><span class="p">))</span>
+
+ <span class="c"># decoded message</span>
+ <span class="n">dmsg_type</span> <span class="o">=</span> <span class="n">decoded</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+ <span class="n">dargs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">decoded</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span> <span class="c"># transforming touple into list</span>
+ <span class="n">dkwargs</span> <span class="o">=</span> <span class="n">decoded</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="p">(</span><span class="n">dmsg_type</span><span class="p">,</span> <span class="n">dargs</span><span class="p">,</span> <span class="n">dkwargs</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="send_reply"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.send_reply">[docs]</a><span class="k">def</span> <span class="nf">send_reply</span><span class="p">(</span><span class="n">conn</span><span class="p">,</span> <span class="n">reply</span><span class="p">):</span>
+ <span class="n">encoded</span> <span class="o">=</span> <span class="n">base64</span><span class="o">.</span><span class="n">b64encode</span><span class="p">(</span><span class="n">cPickle</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">reply</span><span class="p">))</span>
+ <span class="n">conn</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>
+</div>
+<div class="viewcode-block" id="get_options"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.get_options">[docs]</a><span class="k">def</span> <span class="nf">get_options</span><span class="p">():</span>
+ <span class="n">usage</span> <span class="o">=</span> <span class="p">(</span><span class="s">"usage: %prog -S <socket-name> -D <enable-dump> -v "</span><span class="p">)</span>
+
+ <span class="n">parser</span> <span class="o">=</span> <span class="n">OptionParser</span><span class="p">(</span><span class="n">usage</span> <span class="o">=</span> <span class="n">usage</span><span class="p">)</span>
+
+ <span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">"-S"</span><span class="p">,</span> <span class="s">"--socket-name"</span><span class="p">,</span> <span class="n">dest</span><span class="o">=</span><span class="s">"socket_name"</span><span class="p">,</span>
+ <span class="n">help</span> <span class="o">=</span> <span class="s">"Name for the unix socket used to interact with this process"</span><span class="p">,</span>
+ <span class="n">default</span> <span class="o">=</span> <span class="s">"tap.sock"</span><span class="p">,</span> <span class="nb">type</span><span class="o">=</span><span class="s">"str"</span><span class="p">)</span>
+
+ <span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">"-D"</span><span class="p">,</span> <span class="s">"--enable-dump"</span><span class="p">,</span> <span class="n">dest</span><span class="o">=</span><span class="s">"enable_dump"</span><span class="p">,</span>
+ <span class="n">help</span> <span class="o">=</span> <span class="s">"Enable dumping the remote executed commands to a script "</span>
+ <span class="s">"in order to later reproduce and debug the experiment"</span><span class="p">,</span>
+ <span class="n">action</span> <span class="o">=</span> <span class="s">"store_true"</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">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">"-v"</span><span class="p">,</span> <span class="s">"--verbose"</span><span class="p">,</span>
+ <span class="n">help</span><span class="o">=</span><span class="s">"Print debug output"</span><span class="p">,</span>
+ <span class="n">action</span><span class="o">=</span><span class="s">"store_true"</span><span class="p">,</span>
+ <span class="n">dest</span><span class="o">=</span><span class="s">"verbose"</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="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span>
+
+ <span class="k">return</span> <span class="p">(</span><span class="n">options</span><span class="o">.</span><span class="n">socket_name</span><span class="p">,</span> <span class="n">options</span><span class="o">.</span><span class="n">verbose</span><span class="p">,</span> <span class="n">options</span><span class="o">.</span><span class="n">enable_dump</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="run_server"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsserver.run_server">[docs]</a><span class="k">def</span> <span class="nf">run_server</span><span class="p">(</span><span class="n">socket_name</span><span class="p">,</span> <span class="n">level</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">INFO</span><span class="p">,</span>
+ <span class="n">enable_dump</span> <span class="o">=</span> <span class="bp">False</span><span class="p">):</span>
+
+ <span class="c">###### wrapper instantiation</span>
+ <span class="k">if</span> <span class="n">level</span> <span class="o">==</span> <span class="n">logging</span><span class="o">.</span><span class="n">DEBUG</span><span class="p">:</span>
+ <span class="kn">from</span> <span class="nn">syslog</span> <span class="kn">import</span> <span class="n">LOG_DEBUG</span>
+ <span class="kn">import</span> <span class="nn">netns</span>
+ <span class="n">netns</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">set_log_level</span><span class="p">(</span><span class="n">LOG_DEBUG</span><span class="p">)</span>
+
+ <span class="n">wrapper</span> <span class="o">=</span> <span class="n">NetNSWrapper</span><span class="p">(</span><span class="n">loglevel</span><span class="o">=</span><span class="n">level</span><span class="p">,</span> <span class="n">enable_dump</span> <span class="o">=</span> <span class="n">enable_dump</span><span class="p">)</span>
+
+ <span class="n">wrapper</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"STARTING..."</span><span class="p">)</span>
+
+ <span class="c"># create unix socket to receive instructions</span>
+ <span class="n">sock</span> <span class="o">=</span> <span class="n">create_socket</span><span class="p">(</span><span class="n">socket_name</span><span class="p">)</span>
+ <span class="n">sock</span><span class="o">.</span><span class="n">listen</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+
+ <span class="c"># wait for messages to arrive and process them</span>
+ <span class="n">stop</span> <span class="o">=</span> <span class="bp">False</span>
+
+ <span class="k">while</span> <span class="ow">not</span> <span class="n">stop</span><span class="p">:</span>
+ <span class="n">conn</span><span class="p">,</span> <span class="n">addr</span> <span class="o">=</span> <span class="n">sock</span><span class="o">.</span><span class="n">accept</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">settimeout</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
+
+ <span class="k">try</span><span class="p">:</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="o">=</span> <span class="n">recv_msg</span><span class="p">(</span><span class="n">conn</span><span class="p">)</span>
+ <span class="k">except</span> <span class="n">socket</span><span class="o">.</span><span class="n">timeout</span><span class="p">,</span> <span class="n">e</span><span class="p">:</span>
+ <span class="c"># Ingore time-out</span>
+ <span class="k">continue</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">msg_type</span><span class="p">:</span>
+ <span class="c"># Ignore - connection lost</span>
+ <span class="k">break</span>
+
+ <span class="k">if</span> <span class="n">msg_type</span> <span class="o">==</span> <span class="n">NetNSWrapperMessage</span><span class="o">.</span><span class="n">SHUTDOWN</span><span class="p">:</span>
+ <span class="n">stop</span> <span class="o">=</span> <span class="bp">True</span>
+
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">reply</span> <span class="o">=</span> <span class="n">handle_message</span><span class="p">(</span><span class="n">wrapper</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">except</span><span class="p">:</span>
+ <span class="kn">import</span> <span class="nn">traceback</span>
+ <span class="n">err</span> <span class="o">=</span> <span class="n">traceback</span><span class="o">.</span><span class="n">format_exc</span><span class="p">()</span>
+ <span class="n">wrapper</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">err</span><span class="p">)</span>
+ <span class="k">raise</span>
+
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">send_reply</span><span class="p">(</span><span class="n">conn</span><span class="p">,</span> <span class="n">reply</span><span class="p">)</span>
+ <span class="k">except</span> <span class="n">socket</span><span class="o">.</span><span class="n">error</span><span class="p">:</span>
+ <span class="k">break</span>
+
+ <span class="n">wrapper</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"EXITING..."</span><span class="p">)</span>
+</div>
+<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">'__main__'</span><span class="p">:</span>
+
+ <span class="p">(</span><span class="n">socket_name</span><span class="p">,</span> <span class="n">verbose</span><span class="p">,</span> <span class="n">enable_dump</span><span class="p">)</span> <span class="o">=</span> <span class="n">get_options</span><span class="p">()</span>
+
+ <span class="c">## configure logging</span>
+ <span class="n">FORMAT</span> <span class="o">=</span> <span class="s">"</span><span class="si">%(asctime)s</span><span class="s"> </span><span class="si">%(name)s</span><span class="s"> </span><span class="si">%(levelname)-4s</span><span class="s"> </span><span class="si">%(message)s</span><span class="s">"</span>
+ <span class="n">level</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">DEBUG</span> <span class="k">if</span> <span class="n">verbose</span> <span class="k">else</span> <span class="n">logging</span><span class="o">.</span><span class="n">INFO</span>
+
+ <span class="n">logging</span><span class="o">.</span><span class="n">basicConfig</span><span class="p">(</span><span class="n">format</span> <span class="o">=</span> <span class="n">FORMAT</span><span class="p">,</span> <span class="n">level</span> <span class="o">=</span> <span class="n">level</span><span class="p">)</span>
+
+ <span class="c">## Run the server</span>
+ <span class="n">run_server</span><span class="p">(</span><span class="n">socket_name</span><span class="p">,</span> <span class="n">level</span><span class="p">,</span> <span class="n">enable_dump</span><span class="p">)</span>
+</pre></div>
+
+ </div>
+ </div>
+ </div>
+ <div class="clearer"></div>
+ </div>
+ <div class="related">
+ <h3>Navigation</h3>
+ <ul>
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+ <a href="../../../../genindex.html" title="General Index"
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+ <li><a href="../../../../index.html">NEPI 3.2 documentation</a> »</li>
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