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66 <h1>Source code for nepi.resources.linux.route</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.execution.resource</span> <span class="kn">import</span> <span class="n">clsinit_copy</span><span class="p">,</span> <span class="n">ResourceState</span>
87 <span class="kn">from</span> <span class="nn">nepi.resources.linux.application</span> <span class="kn">import</span> <span class="n">LinuxApplication</span>
89 <span class="kn">import</span> <span class="nn">os</span>
91 <span class="nd">@clsinit_copy</span>
92 <div class="viewcode-block" id="LinuxRoute"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute">[docs]</a><span class="k">class</span> <span class="nc">LinuxRoute</span><span class="p">(</span><span class="n">LinuxApplication</span><span class="p">):</span>
93 <span class="n">_rtype</span> <span class="o">=</span> <span class="s">"linux::Route"</span>
94 <span class="n">_help</span> <span class="o">=</span> <span class="s">"Adds a route to the host using iptools "</span>
96 <span class="nd">@classmethod</span>
97 <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
98 <span class="n">network</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"network"</span><span class="p">,</span> <span class="s">"Network address"</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>
99 <span class="n">prefix</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">,</span> <span class="s">"IP prefix length"</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>
100 <span class="n">nexthop</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">"nexthop"</span><span class="p">,</span> <span class="s">"Nexthop IP"</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">network</span><span class="p">)</span>
103 <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span>
104 <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">nexthop</span><span class="p">)</span>
106 <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>
107 <span class="nb">super</span><span class="p">(</span><span class="n">LinuxRoute</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>
108 <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">"route-</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">guid</span>
109 <span class="bp">self</span><span class="o">.</span><span class="n">_device</span> <span class="o">=</span> <span class="bp">None</span>
111 <span class="nd">@property</span>
112 <div class="viewcode-block" id="LinuxRoute.device"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.device">[docs]</a> <span class="k">def</span> <span class="nf">device</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
113 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_device</span><span class="p">:</span>
114 <span class="kn">from</span> <span class="nn">nepi.resources.linux.tap</span> <span class="kn">import</span> <span class="n">LinuxTap</span>
115 <span class="kn">from</span> <span class="nn">nepi.resources.linux.tun</span> <span class="kn">import</span> <span class="n">LinuxTun</span>
116 <span class="kn">from</span> <span class="nn">nepi.resources.linux.interface</span> <span class="kn">import</span> <span class="n">LinuxInterface</span>
117 <span class="n">tap</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">LinuxTap</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
118 <span class="n">tun</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">LinuxTun</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
119 <span class="n">interface</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">LinuxInterface</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
120 <span class="k">if</span> <span class="n">tap</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_device</span> <span class="o">=</span> <span class="n">tap</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
121 <span class="k">elif</span> <span class="n">tun</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_device</span> <span class="o">=</span> <span class="n">tun</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
122 <span class="k">elif</span> <span class="n">interface</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_device</span> <span class="o">=</span> <span class="n">interface</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
123 <span class="k">else</span><span class="p">:</span>
124 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">"linux::Routes must be connected to a "</span>\
125 <span class="s">"linux::TAP, linux::TUN, or linux::Interface"</span>
126 <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_device</span>
128 <span class="nd">@property</span>
129 <div class="viewcode-block" id="LinuxRoute.node"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
130 <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">node</span>
132 <div class="viewcode-block" id="LinuxRoute.upload_start_command"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
133 <span class="c"># We want to make sure the route is configured</span>
134 <span class="c"># before the deploy is over, so we execute the </span>
135 <span class="c"># start script now and wait until it finishes. </span>
136 <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">"command"</span><span class="p">)</span>
137 <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>
139 <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">"start.sh"</span><span class="p">)</span>
140 <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">run_and_wait</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">,</span>
141 <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
142 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
144 <div class="viewcode-block" id="LinuxRoute.upload_sources"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
145 <span class="c"># upload stop.sh script</span>
146 <span class="n">stop_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="bp">self</span><span class="o">.</span><span class="n">_stop_command</span><span class="p">)</span>
148 <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">stop_command</span><span class="p">,</span>
149 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">"stop.sh"</span><span class="p">),</span>
150 <span class="n">text</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
151 <span class="c"># Overwrite file every time. </span>
152 <span class="c"># The stop.sh has the path to the socket, which should change</span>
153 <span class="c"># on every experiment run.</span>
154 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
156 <div class="viewcode-block" id="LinuxRoute.do_deploy"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
157 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</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">PROVISIONED</span><span class="p">:</span>
158 <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>
159 <span class="k">else</span><span class="p">:</span>
160 <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">"command"</span><span class="p">):</span>
161 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">"command"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_command</span><span class="p">)</span>
163 <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
164 <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
166 <span class="bp">self</span><span class="o">.</span><span class="n">set_ready</span><span class="p">()</span>
168 <div class="viewcode-block" id="LinuxRoute.do_start"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
169 <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>
170 <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">"command"</span><span class="p">)</span>
171 <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Starting command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
173 <span class="bp">self</span><span class="o">.</span><span class="n">set_started</span><span class="p">()</span>
174 <span class="k">else</span><span class="p">:</span>
175 <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="n">command</span>
176 <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>
177 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
179 <div class="viewcode-block" id="LinuxRoute.do_stop"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.route.LinuxRoute.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>
180 <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'command'</span><span class="p">)</span> <span class="ow">or</span> <span class="s">''</span>
182 <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>
183 <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Stopping command '</span><span class="si">%s</span><span class="s">'"</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
185 <span class="n">command</span> <span class="o">=</span> <span class="s">"bash </span><span class="si">%s</span><span class="s">"</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">"stop.sh"</span><span class="p">)</span>
186 <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">execute_command</span><span class="p">(</span><span class="n">command</span><span class="p">,</span>
187 <span class="n">blocking</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
189 <span class="k">if</span> <span class="n">err</span><span class="p">:</span>
190 <span class="n">msg</span> <span class="o">=</span> <span class="s">" Failed to stop command '</span><span class="si">%s</span><span class="s">' "</span> <span class="o">%</span> <span class="n">command</span>
191 <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>
193 <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
195 <span class="nd">@property</span>
196 <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
197 <span class="n">network</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">"network"</span><span class="p">)</span>
198 <span class="n">prefix</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">"prefix"</span><span class="p">)</span>
199 <span class="n">nexthop</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">"nexthop"</span><span class="p">)</span>
200 <span class="n">devicename</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">)</span>
202 <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
203 <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip route add </span><span class="si">%s</span><span class="s">/</span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> dev </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
204 <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"network"</span><span class="p">),</span>
205 <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">),</span>
206 <span class="s">"default"</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">nexthop</span> <span class="k">else</span> <span class="s">"via </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">nexthop</span><span class="p">,</span>
207 <span class="n">devicename</span><span class="p">))</span>
209 <span class="k">return</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
211 <span class="nd">@property</span>
212 <span class="k">def</span> <span class="nf">_stop_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
213 <span class="n">network</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">"network"</span><span class="p">)</span>
214 <span class="n">prefix</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">"prefix"</span><span class="p">)</span>
215 <span class="n">nexthop</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">"nexthop"</span><span class="p">)</span>
216 <span class="n">devicename</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"deviceName"</span><span class="p">)</span>
218 <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
219 <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">"sudo -S ip route del </span><span class="si">%s</span><span class="s">/</span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> dev </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span>
220 <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"network"</span><span class="p">),</span>
221 <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">),</span>
222 <span class="s">"default"</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">nexthop</span> <span class="k">else</span> <span class="s">"via </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">nexthop</span><span class="p">,</span>
223 <span class="n">devicename</span><span class="p">))</span>
225 <span class="k">return</span> <span class="s">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
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