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66 <h1>Source code for nepi.resources.netns.netnsapplication</h1><div class="highlight"><pre>
67 <span class="c">#</span>
68 <span class="c"># NEPI, a framework to manage network experiments</span>
69 <span class="c"># Copyright (C) 2014 INRIA</span>
70 <span class="c">#</span>
71 <span class="c"># This program is free software: you can redistribute it and/or modify</span>
72 <span class="c"># it under the terms of the GNU General Public License version 2 as</span>
73 <span class="c"># published by the Free Software Foundation;</span>
74 <span class="c">#</span>
75 <span class="c"># This program is distributed in the hope that it will be useful,</span>
76 <span class="c"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
77 <span class="c"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
78 <span class="c"># GNU General Public License for more details.</span>
79 <span class="c">#</span>
80 <span class="c"># You should have received a copy of the GNU General Public License</span>
81 <span class="c"># along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
82 <span class="c">#</span>
83 <span class="c"># Author: Alina Quereilhac <alina.quereilhac@inria.fr></span>
85 <span class="kn">from</span> <span class="nn">nepi.execution.attribute</span> <span class="kn">import</span> <span class="n">Attribute</span><span class="p">,</span> <span class="n">Flags</span><span class="p">,</span> <span class="n">Types</span>
86 <span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsbase</span> <span class="kn">import</span> <span class="n">NetNSBase</span>
87 <span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">clsinit_copy</span><span class="p">,</span> <span class="n">ResourceState</span>
89 <span class="kn">import</span> <span class="nn">shlex</span>
91 <span class="nd">@clsinit_copy</span>
92 <div class="viewcode-block" id="NetNSApplication"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsapplication.NetNSApplication">[docs]</a><span class="k">class</span> <span class="nc">NetNSApplication</span><span class="p">(</span><span class="n">NetNSBase</span><span class="p">):</span>
93 <span class="n">_rtype</span> <span class="o">=</span> <span class="s">"netns::Application"</span>
95 <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>
96 <span class="nb">super</span><span class="p">(</span><span class="n">NetNSApplication</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">)</span>
97 <span class="bp">self</span><span class="o">.</span><span class="n">_traces</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span>
99 <span class="nd">@classmethod</span>
100 <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
101 <span class="n">command</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"command"</span><span class="p">,</span> <span class="s">"Command to execute"</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>
102 <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
104 <span class="nd">@property</span>
105 <div class="viewcode-block" id="NetNSApplication.emulation"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsapplication.NetNSApplication.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>
106 <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">emulation</span>
108 <span class="nd">@property</span>
109 <div class="viewcode-block" id="NetNSApplication.node"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsapplication.NetNSApplication.node">[docs]</a> <span class="k">def</span> <span class="nf">node</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
110 <span class="kn">from</span> <span class="nn">nepi.resources.netns.netnsnode</span> <span class="kn">import</span> <span class="n">NetNSNode</span>
111 <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">NetNSNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
113 <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="p">:</span>
114 <span class="n">msg</span> <span class="o">=</span> <span class="s">"Route not connected to Node!!"</span>
115 <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>
116 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
118 <span class="k">return</span> <span class="n">node</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
120 <span class="nd">@property</span>
121 <span class="k">def</span> <span class="nf">_rms_to_wait</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
122 <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="p">]</span>
124 <div class="viewcode-block" id="NetNSApplication.do_start"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsapplication.NetNSApplication.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>
125 <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">state</span> <span class="o"><</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">STARTED</span><span class="p">:</span>
126 <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">"---- RESCHEDULING START ----"</span> <span class="p">)</span>
127 <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">start</span><span class="p">)</span>
128 <span class="k">else</span><span class="p">:</span>
129 <span class="bp">self</span><span class="o">.</span><span class="n">_configure_traces</span><span class="p">()</span>
131 <span class="n">command</span> <span class="o">=</span> <span class="n">shlex</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"command"</span><span class="p">))</span>
132 <span class="n">stdout</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_traces</span><span class="p">[</span><span class="s">"stdout"</span><span class="p">]</span>
133 <span class="n">stderr</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_traces</span><span class="p">[</span><span class="s">"stderr"</span><span class="p">]</span>
134 <span class="bp">self</span><span class="o">.</span><span class="n">_uuid</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">invoke</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">uuid</span><span class="p">,</span>
135 <span class="s">"Popen"</span><span class="p">,</span> <span class="n">command</span><span class="p">,</span> <span class="n">stdout</span> <span class="o">=</span> <span class="n">stdout</span><span class="p">,</span>
136 <span class="n">stderr</span> <span class="o">=</span> <span class="n">stderr</span><span class="p">)</span>
138 <span class="nb">super</span><span class="p">(</span><span class="n">NetNSApplication</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_start</span><span class="p">()</span>
139 <span class="bp">self</span><span class="o">.</span><span class="n">_start_time</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">start_time</span>
141 <span class="k">def</span> <span class="nf">_configure_traces</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
142 <span class="n">stdout</span> <span class="o">=</span> <span class="s">"</span><span class="si">%s</span><span class="s">/</span><span class="si">%d</span><span class="s">.stdout"</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">run_home</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">)</span>
143 <span class="n">stderr</span> <span class="o">=</span> <span class="s">"</span><span class="si">%s</span><span class="s">/</span><span class="si">%d</span><span class="s">.stderr"</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">run_home</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">)</span>
144 <span class="bp">self</span><span class="o">.</span><span class="n">_trace_filename</span><span class="p">[</span><span class="s">"stdout"</span><span class="p">]</span> <span class="o">=</span> <span class="n">stdout</span>
145 <span class="bp">self</span><span class="o">.</span><span class="n">_trace_filename</span><span class="p">[</span><span class="s">"stderr"</span><span class="p">]</span> <span class="o">=</span> <span class="n">stderr</span>
146 <span class="bp">self</span><span class="o">.</span><span class="n">_traces</span><span class="p">[</span><span class="s">"stdout"</span><span class="p">]</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">create</span><span class="p">(</span><span class="s">"open"</span><span class="p">,</span> <span class="n">stdout</span><span class="p">,</span> <span class="s">"w"</span><span class="p">)</span>
147 <span class="bp">self</span><span class="o">.</span><span class="n">_traces</span><span class="p">[</span><span class="s">"stderr"</span><span class="p">]</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">create</span><span class="p">(</span><span class="s">"open"</span><span class="p">,</span> <span class="n">stderr</span><span class="p">,</span> <span class="s">"w"</span><span class="p">)</span>
149 <span class="nd">@property</span>
150 <div class="viewcode-block" id="NetNSApplication.state"><a class="viewcode-back" href="../../../../_layout/nepi.resources.netns.html#nepi.resources.netns.netnsapplication.NetNSApplication.state">[docs]</a> <span class="k">def</span> <span class="nf">state</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
151 <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>
152 <span class="n">retcode</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">invoke</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">uuid</span><span class="p">,</span> <span class="s">"poll"</span><span class="p">)</span>
154 <span class="k">if</span> <span class="n">retcode</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
155 <span class="k">if</span> <span class="n">retcode</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
156 <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
157 <span class="k">else</span><span class="p">:</span>
158 <span class="n">out</span> <span class="o">=</span> <span class="s">""</span>
159 <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to execute command '</span><span class="si">%s</span><span class="s">'"</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">"command"</span><span class="p">)</span>
160 <span class="n">err</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">trace</span><span class="p">(</span><span class="s">"stderr"</span><span class="p">)</span>
161 <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>
162 <span class="bp">self</span><span class="o">.</span><span class="n">do_fail</span><span class="p">()</span>
164 <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span>
165 </pre></div></div></div>
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