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  66   <h1>Source code for nepi.resources.omf.wilabt_node</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) 2013 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 &lt;http://www.gnu.org/licenses/&gt;.</span>
  82 <span class="c">#</span>
  83 <span class="c"># Author: Lucia Guevgeozian &lt;lucia.guevgeozian_odizzio@inria.fr&gt;</span>
  84
  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">ResourceManager</span><span class="p">,</span> <span class="n">clsinit_copy</span><span class="p">,</span> \
  87         <span class="n">ResourceState</span>
  88 <span class="kn">from</span> <span class="nn">nepi.resources.omf.node</span> <span class="kn">import</span> <span class="n">OMFNode</span>
  89 <span class="kn">from</span> <span class="nn">nepi.util.sfaapi</span> <span class="kn">import</span> <span class="n">SFAAPIFactory</span>
  90 <span class="kn">from</span> <span class="nn">nepi.util.execfuncs</span> <span class="kn">import</span> <span class="n">lexec</span>
  91 <span class="kn">from</span> <span class="nn">nepi.util</span> <span class="kn">import</span> <span class="n">sshfuncs</span>
  92
  93 <span class="kn">from</span> <span class="nn">random</span> <span class="kn">import</span> <span class="n">randint</span>
  94 <span class="kn">import</span> <span class="nn">time</span>
  95 <span class="kn">import</span> <span class="nn">re</span>
  96 <span class="kn">import</span> <span class="nn">weakref</span>
  97 <span class="kn">import</span> <span class="nn">socket</span>
  98 <span class="kn">import</span> <span class="nn">threading</span>
  99 <span class="kn">import</span> <span class="nn">datetime</span>
 100
 101 <span class="nd">@clsinit_copy</span>
 102 <div class="viewcode-block" id="WilabtSfaNode"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode">[docs]</a><span class="k">class</span> <span class="nc">WilabtSfaNode</span><span class="p">(</span><span class="n">OMFNode</span><span class="p">):</span>
 103     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;wilabt::sfa::Node&quot;</span>
 104     <span class="n">_help</span> <span class="o">=</span> <span class="s">&quot;Controls a Wilabt host accessible using a SSH key &quot;</span> \
 105             <span class="s">&quot;and provisioned using SFA&quot;</span>
 106     <span class="n">_platform</span> <span class="o">=</span> <span class="s">&quot;omf&quot;</span>
 107
 108     <span class="nd">@classmethod</span>
 109     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
 110
 111         <span class="n">username</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;username&quot;</span><span class="p">,</span> <span class="s">&quot;Local account username&quot;</span><span class="p">,</span>
 112                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Credential</span><span class="p">)</span>
 113
 114         <span class="n">identity</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;identity&quot;</span><span class="p">,</span> <span class="s">&quot;SSH identity file&quot;</span><span class="p">,</span>
 115                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Credential</span><span class="p">)</span>
 116
 117         <span class="n">server_key</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;serverKey&quot;</span><span class="p">,</span> <span class="s">&quot;Server public key&quot;</span><span class="p">,</span>
 118                 <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>
 119
 120         <span class="n">sfa_user</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;sfauser&quot;</span><span class="p">,</span> <span class="s">&quot;SFA user&quot;</span><span class="p">,</span>
 121                     <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Credential</span><span class="p">)</span>
 122
 123         <span class="n">sfa_private_key</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;sfaPrivateKey&quot;</span><span class="p">,</span> <span class="s">&quot;SFA path to the private key </span><span class="se">\</span>
 124 <span class="s">                            used to generate the user credential&quot;</span><span class="p">,</span>
 125                             <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Credential</span><span class="p">)</span>
 126
 127         <span class="n">slicename</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;slicename&quot;</span><span class="p">,</span> <span class="s">&quot;SFA slice for the experiment&quot;</span><span class="p">,</span>
 128                     <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Credential</span><span class="p">)</span>
 129
 130         <span class="n">gateway_user</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;gatewayUser&quot;</span><span class="p">,</span> <span class="s">&quot;Gateway account username&quot;</span><span class="p">,</span>
 131                 <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>
 132
 133         <span class="n">gateway</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;gateway&quot;</span><span class="p">,</span> <span class="s">&quot;Hostname of the gateway machine&quot;</span><span class="p">,</span>
 134                 <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>
 135
 136         <span class="n">host</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;host&quot;</span><span class="p">,</span> <span class="s">&quot;Name of the physical machine&quot;</span><span class="p">,</span>
 137                 <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>
 138
 139         <span class="n">disk_image</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;disk_image&quot;</span><span class="p">,</span> <span class="s">&quot;Specify a specific disk image for a node&quot;</span><span class="p">,</span>
 140                 <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>
 141
 142         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">username</span><span class="p">)</span>
 143         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">identity</span><span class="p">)</span>
 144         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">server_key</span><span class="p">)</span>
 145         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">sfa_user</span><span class="p">)</span>
 146         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">sfa_private_key</span><span class="p">)</span>
 147         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">slicename</span><span class="p">)</span>
 148         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">gateway_user</span><span class="p">)</span>
 149         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">gateway</span><span class="p">)</span>
 150         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">host</span><span class="p">)</span>
 151         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">disk_image</span><span class="p">)</span>
 152
 153     <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>
 154         <span class="nb">super</span><span class="p">(</span><span class="n">WilabtSfaNode</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>
 155
 156         <span class="bp">self</span><span class="o">.</span><span class="n">_ecobj</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">ec</span><span class="p">)</span>
 157         <span class="bp">self</span><span class="o">.</span><span class="n">_sfaapi</span> <span class="o">=</span> <span class="bp">None</span>
 158         <span class="bp">self</span><span class="o">.</span><span class="n">_node_to_provision</span> <span class="o">=</span> <span class="bp">None</span>
 159         <span class="bp">self</span><span class="o">.</span><span class="n">_slicenode</span> <span class="o">=</span> <span class="bp">False</span>
 160         <span class="bp">self</span><span class="o">.</span><span class="n">_host</span> <span class="o">=</span> <span class="bp">False</span>
 161         <span class="bp">self</span><span class="o">.</span><span class="n">_username</span> <span class="o">=</span> <span class="bp">None</span>
 162
 163     <span class="k">def</span> <span class="nf">_skip_provision</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 164         <span class="n">sfa_user</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;sfauser&quot;</span><span class="p">)</span>
 165         <span class="k">if</span> <span class="ow">not</span> <span class="n">sfa_user</span><span class="p">:</span>
 166             <span class="k">return</span> <span class="bp">True</span>
 167         <span class="k">else</span><span class="p">:</span> <span class="k">return</span> <span class="bp">False</span>
 168
 169     <span class="nd">@property</span>
 170 <div class="viewcode-block" id="WilabtSfaNode.sfaapi"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.sfaapi">[docs]</a>    <span class="k">def</span> <span class="nf">sfaapi</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 171         <span class="sd">&quot;&quot;&quot;</span>
 172 <span class="sd">        Property to instanciate the SFA API based in sfi client.</span>
 173 <span class="sd">        For each SFA method called this instance is used.</span>
 174 <span class="sd">        &quot;&quot;&quot;</span>
 175         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sfaapi</span><span class="p">:</span>
 176             <span class="n">sfa_user</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;sfauser&quot;</span><span class="p">)</span>
 177             <span class="n">sfa_sm</span> <span class="o">=</span> <span class="s">&quot;http://www.wilab2.ilabt.iminds.be:12369/protogeni/xmlrpc/am/3.0&quot;</span>
 178             <span class="n">sfa_auth</span> <span class="o">=</span> <span class="s">&#39;.&#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">sfa_user</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&#39;.&#39;</span><span class="p">)[:</span><span class="mi">2</span><span class="p">])</span>
 179             <span class="n">sfa_registry</span> <span class="o">=</span> <span class="s">&quot;http://sfa3.planet-lab.eu:12345/&quot;</span>
 180             <span class="n">sfa_private_key</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;sfaPrivateKey&quot;</span><span class="p">)</span>
 181             <span class="n">batch</span> <span class="o">=</span> <span class="bp">True</span>
 182
 183             <span class="n">_sfaapi</span> <span class="o">=</span> <span class="n">SFAAPIFactory</span><span class="o">.</span><span class="n">get_api</span><span class="p">(</span><span class="n">sfa_user</span><span class="p">,</span> <span class="n">sfa_auth</span><span class="p">,</span>
 184                 <span class="n">sfa_registry</span><span class="p">,</span> <span class="n">sfa_sm</span><span class="p">,</span> <span class="n">sfa_private_key</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ecobj</span><span class="p">(),</span> <span class="n">batch</span><span class="p">,</span> <span class="n">WilabtSfaNode</span><span class="o">.</span><span class="n">_rtype</span><span class="p">)</span>
 185
 186             <span class="k">if</span> <span class="ow">not</span> <span class="n">_sfaapi</span><span class="p">:</span>
 187                 <span class="bp">self</span><span class="o">.</span><span class="n">fail_sfaapi</span><span class="p">()</span>
 188
 189             <span class="bp">self</span><span class="o">.</span><span class="n">_sfaapi</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">_sfaapi</span><span class="p">)</span>
 190
 191         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sfaapi</span><span class="p">()</span>
 192 </div>
 193 <div class="viewcode-block" id="WilabtSfaNode.do_discover"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.do_discover">[docs]</a>    <span class="k">def</span> <span class="nf">do_discover</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 194         <span class="sd">&quot;&quot;&quot;</span>
 195 <span class="sd">        Based on the attributes defined by the user, discover the suitable </span>
 196 <span class="sd">        node for provision.</span>
 197 <span class="sd">        &quot;&quot;&quot;</span>
 198         <span class="n">nodes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">get_resources_hrn</span><span class="p">()</span>
 199
 200         <span class="n">host</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_host</span><span class="p">()</span>
 201         <span class="k">if</span> <span class="n">host</span><span class="p">:</span>
 202             <span class="c"># the user specified one particular node to be provisioned</span>
 203             <span class="bp">self</span><span class="o">.</span><span class="n">_host</span> <span class="o">=</span> <span class="bp">True</span>
 204             <span class="n">host_hrn</span> <span class="o">=</span> <span class="n">nodes</span><span class="p">[</span><span class="n">host</span><span class="p">]</span>
 205
 206             <span class="c"># check that the node is not blacklisted or being provisioned</span>
 207             <span class="c"># by other RM</span>
 208             <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_blacklisted</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">):</span>
 209                 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reserved</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">):</span>
 210                     <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_if_in_slice</span><span class="p">([</span><span class="n">host_hrn</span><span class="p">]):</span>
 211                         <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;Node already in slice </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">host_hrn</span><span class="p">)</span>
 212                         <span class="bp">self</span><span class="o">.</span><span class="n">_slicenode</span> <span class="o">=</span> <span class="bp">True</span>
 213                     <span class="n">host</span> <span class="o">=</span> <span class="n">host</span> <span class="o">+</span> <span class="s">&#39;.wilab2.ilabt.iminds.be&#39;</span>
 214                     <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&#39;host&#39;</span><span class="p">,</span> <span class="n">host</span><span class="p">)</span>
 215                     <span class="bp">self</span><span class="o">.</span><span class="n">_node_to_provision</span> <span class="o">=</span> <span class="n">host_hrn</span>
 216                     <span class="nb">super</span><span class="p">(</span><span class="n">WilabtSfaNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 217 </div>
 218 <div class="viewcode-block" id="WilabtSfaNode.do_provision"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.do_provision">[docs]</a>    <span class="k">def</span> <span class="nf">do_provision</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 219         <span class="sd">&quot;&quot;&quot;</span>
 220 <span class="sd">        Add node to user&#39;s slice and verifing that the node is functioning</span>
 221 <span class="sd">        correctly. Check ssh, omf rc running, hostname, file system.</span>
 222 <span class="sd">        &quot;&quot;&quot;</span>
 223         <span class="n">provision_ok</span> <span class="o">=</span> <span class="bp">False</span>
 224         <span class="n">ssh_ok</span> <span class="o">=</span> <span class="bp">False</span>
 225         <span class="n">proc_ok</span> <span class="o">=</span> <span class="bp">False</span>
 226         <span class="n">timeout</span> <span class="o">=</span> <span class="mi">300</span>
 227
 228         <span class="k">while</span> <span class="ow">not</span> <span class="n">provision_ok</span><span class="p">:</span>
 229             <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_node_to_provision</span>
 230             <span class="c">#if self._slicenode:</span>
 231             <span class="c">#    self._delete_from_slice()</span>
 232             <span class="c">#    self.debug(&quot;Waiting 480 sec for re-adding to slice&quot;)</span>
 233             <span class="c">#    time.sleep(480) # Timout for the testbed to allow a new reservation</span>
 234             <span class="bp">self</span><span class="o">.</span><span class="n">_add_node_to_slice</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
 235             <span class="n">t</span> <span class="o">=</span> <span class="mi">0</span>
 236             <span class="k">while</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_if_in_slice</span><span class="p">([</span><span class="n">node</span><span class="p">])</span> <span class="ow">and</span> <span class="n">t</span> <span class="o">&lt;</span> <span class="n">timeout</span> \
 237                 <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ecobj</span><span class="p">()</span><span class="o">.</span><span class="n">abort</span><span class="p">:</span>
 238                 <span class="n">t</span> <span class="o">=</span> <span class="n">t</span> <span class="o">+</span> <span class="mi">5</span>
 239                 <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">t</span><span class="p">)</span>
 240                 <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;Waiting 5 sec for resources to be added&quot;</span><span class="p">)</span>
 241                 <span class="k">continue</span>
 242
 243             <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_if_in_slice</span><span class="p">([</span><span class="n">node</span><span class="p">]):</span>
 244                 <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;Couldn&#39;t add node </span><span class="si">%s</span><span class="s"> to slice&quot;</span> <span class="o">%</span> <span class="n">node</span><span class="p">)</span>
 245                 <span class="bp">self</span><span class="o">.</span><span class="n">fail_node_not_available</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
 246
 247             <span class="bp">self</span><span class="o">.</span><span class="n">_get_username</span><span class="p">()</span>
 248             <span class="n">ssh_ok</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_ssh_loop</span><span class="p">()</span>
 249
 250             <span class="k">if</span> <span class="ow">not</span> <span class="n">ssh_ok</span><span class="p">:</span>
 251                 <span class="c"># the timeout was reach without establishing ssh connection</span>
 252                 <span class="c"># the node is blacklisted, and a new</span>
 253                 <span class="c"># node to provision is discovered</span>
 254                 <span class="bp">self</span><span class="o">.</span><span class="n">_blacklist_node</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
 255                 <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 256                 <span class="k">continue</span>
 257
 258             <span class="c"># check /proc directory is mounted (ssh_ok = True)</span>
 259             <span class="c"># file system is not read only, hostname is correct</span>
 260             <span class="c"># and omf_rc process is up</span>
 261             <span class="k">else</span><span class="p">:</span>
 262                 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_fs</span><span class="p">():</span>
 263                     <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 264                     <span class="k">continue</span>
 265                 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_omfrc</span><span class="p">():</span>
 266                     <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 267                     <span class="k">continue</span>
 268                 <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_hostname</span><span class="p">():</span>
 269                     <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 270                     <span class="k">continue</span>
 271
 272                 <span class="k">else</span><span class="p">:</span>
 273                     <span class="n">provision_ok</span> <span class="o">=</span> <span class="bp">True</span>
 274                     <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">&#39;host&#39;</span><span class="p">):</span>
 275                         <span class="bp">self</span><span class="o">.</span><span class="n">_set_host_attr</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
 276                     <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot; Node provisioned &quot;</span><span class="p">)</span>
 277
 278         <span class="nb">super</span><span class="p">(</span><span class="n">WilabtSfaNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
 279 </div>
 280 <div class="viewcode-block" id="WilabtSfaNode.do_deploy"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.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>
 281         <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">NEW</span><span class="p">:</span>
 282             <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Deploying w-iLab.t node&quot;</span><span class="p">)</span>
 283             <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 284             <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
 285         <span class="nb">super</span><span class="p">(</span><span class="n">WilabtSfaNode</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_deploy</span><span class="p">()</span>
 286 </div>
 287 <div class="viewcode-block" id="WilabtSfaNode.do_release"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.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>
 288         <span class="nb">super</span><span class="p">(</span><span class="n">WilabtSfaNode</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>
 289         <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">RELEASED</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_skip_provision</span><span class="p">():</span>
 290             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot; Releasing SFA API &quot;</span><span class="p">)</span>
 291             <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">release</span><span class="p">()</span>
 292 </div>
 293     <span class="k">def</span> <span class="nf">_blacklisted</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">):</span>
 294         <span class="sd">&quot;&quot;&quot;</span>
 295 <span class="sd">        Check in the SFA API that the node is not in the blacklist.</span>
 296 <span class="sd">        &quot;&quot;&quot;</span>
 297         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">blacklisted</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">):</span>
 298            <span class="bp">self</span><span class="o">.</span><span class="n">fail_node_not_available</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">)</span>
 299         <span class="k">return</span> <span class="bp">False</span>
 300
 301     <span class="k">def</span> <span class="nf">_reserved</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">):</span>
 302         <span class="sd">&quot;&quot;&quot;</span>
 303 <span class="sd">        Check in the SFA API that the node is not in the reserved</span>
 304 <span class="sd">        list.</span>
 305 <span class="sd">        &quot;&quot;&quot;</span>
 306         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">reserved</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">):</span>
 307             <span class="bp">self</span><span class="o">.</span><span class="n">fail_node_not_available</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">)</span>
 308         <span class="k">return</span> <span class="bp">False</span>
 309
 310     <span class="k">def</span> <span class="nf">_get_username</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 311         <span class="sd">&quot;&quot;&quot;</span>
 312 <span class="sd">        Get the username for login in to the nodes from RSpec.</span>
 313 <span class="sd">        Wilabt username is not made out of any convention, it</span>
 314 <span class="sd">        has to be retrived from the manifest RSpec.</span>
 315 <span class="sd">        &quot;&quot;&quot;</span>
 316         <span class="n">slicename</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;slicename&quot;</span><span class="p">)</span>
 317         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_username</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
 318             <span class="n">slice_info</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">get_slice_resources</span><span class="p">(</span><span class="n">slicename</span><span class="p">)</span>
 319             <span class="n">username</span> <span class="o">=</span> <span class="n">slice_info</span><span class="p">[</span><span class="s">&#39;resource&#39;</span><span class="p">][</span><span class="mi">0</span><span class="p">][</span><span class="s">&#39;services&#39;</span><span class="p">][</span><span class="mi">0</span><span class="p">][</span><span class="s">&#39;login&#39;</span><span class="p">][</span><span class="mi">0</span><span class="p">][</span><span class="s">&#39;username&#39;</span><span class="p">]</span>
 320             <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&#39;username&#39;</span><span class="p">,</span> <span class="n">username</span><span class="p">)</span>
 321             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;Retriving username information from RSpec </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">username</span><span class="p">)</span>
 322             <span class="bp">self</span><span class="o">.</span><span class="n">_username</span> <span class="o">=</span> <span class="n">username</span>
 323
 324     <span class="k">def</span> <span class="nf">_check_ssh_loop</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 325         <span class="sd">&quot;&quot;&quot;</span>
 326 <span class="sd">        Check that the ssh login is possible. In wilabt is done</span>
 327 <span class="sd">        through the gateway because is private testbed.</span>
 328 <span class="sd">        &quot;&quot;&quot;</span>
 329         <span class="n">t</span> <span class="o">=</span> <span class="mi">0</span>
 330         <span class="n">timeout</span> <span class="o">=</span> <span class="mi">1200</span>
 331         <span class="n">ssh_ok</span> <span class="o">=</span> <span class="bp">False</span>
 332         <span class="k">while</span> <span class="n">t</span> <span class="o">&lt;</span> <span class="n">timeout</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">ssh_ok</span><span class="p">:</span>
 333             <span class="n">cmd</span> <span class="o">=</span> <span class="s">&#39;echo </span><span class="se">\&#39;</span><span class="s">GOOD NODE</span><span class="se">\&#39;</span><span class="s">&#39;</span>
 334             <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="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span>
 335             <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;GOOD NODE&quot;</span><span class="p">)</span> <span class="o">&lt;</span> <span class="mi">0</span><span class="p">:</span>
 336                 <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span> <span class="s">&quot;No SSH connection, waiting 20s&quot;</span> <span class="p">)</span>
 337                 <span class="n">t</span> <span class="o">=</span> <span class="n">t</span> <span class="o">+</span> <span class="mi">20</span>
 338                 <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">20</span><span class="p">)</span>
 339                 <span class="k">continue</span>
 340             <span class="k">else</span><span class="p">:</span>
 341                 <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span> <span class="s">&quot;SSH OK&quot;</span> <span class="p">)</span>
 342                 <span class="n">ssh_ok</span> <span class="o">=</span> <span class="bp">True</span>
 343                 <span class="k">continue</span>
 344         <span class="k">return</span> <span class="n">ssh_ok</span>
 345
 346     <span class="k">def</span> <span class="nf">_check_fs</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 347         <span class="sd">&quot;&quot;&quot;</span>
 348 <span class="sd">        Check file system, /proc well mounted.</span>
 349 <span class="sd">        &quot;&quot;&quot;</span>
 350         <span class="n">cmd</span> <span class="o">=</span> <span class="s">&#39;mount |grep proc&#39;</span>
 351         <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="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span>
 352         <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;/proc type proc&quot;</span><span class="p">)</span> <span class="o">&lt;</span> <span class="mi">0</span><span class="p">:</span>
 353             <span class="bp">self</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s">&quot; Corrupted file system &quot;</span><span class="p">)</span>
 354             <span class="bp">self</span><span class="o">.</span><span class="n">_blacklist_node</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
 355             <span class="k">return</span> <span class="bp">False</span>
 356         <span class="k">return</span> <span class="bp">True</span>
 357
 358     <span class="k">def</span> <span class="nf">_check_omfrc</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 359         <span class="sd">&quot;&quot;&quot;</span>
 360 <span class="sd">        Check that OMF 6 resource controller is running.</span>
 361 <span class="sd">        &quot;&quot;&quot;</span>
 362         <span class="n">cmd</span> <span class="o">=</span> <span class="s">&#39;ps aux|grep omf&#39;</span>
 363         <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="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span>
 364         <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;/usr/local/rvm/gems/ruby-1.9.3-p286@omf/bin/omf_rc&quot;</span><span class="p">)</span> <span class="o">&lt;</span> <span class="mi">0</span><span class="p">:</span>
 365             <span class="k">return</span> <span class="bp">False</span>
 366         <span class="k">return</span> <span class="bp">True</span>
 367
 368     <span class="k">def</span> <span class="nf">_check_hostname</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 369         <span class="sd">&quot;&quot;&quot;</span>
 370 <span class="sd">        Check that the hostname in the image is not set to localhost.</span>
 371 <span class="sd">        &quot;&quot;&quot;</span>
 372         <span class="n">cmd</span> <span class="o">=</span> <span class="s">&#39;hostname&#39;</span>
 373         <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="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span>
 374         <span class="k">if</span> <span class="s">&#39;localhost&#39;</span> <span class="ow">in</span> <span class="n">out</span><span class="o">.</span><span class="n">lower</span><span class="p">():</span>
 375             <span class="k">return</span> <span class="bp">False</span>
 376         <span class="k">else</span><span class="p">:</span>
 377             <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&#39;hostname&#39;</span><span class="p">,</span> <span class="n">out</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span>
 378         <span class="k">return</span> <span class="bp">True</span>
 379
 380 <div class="viewcode-block" id="WilabtSfaNode.execute"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.execute">[docs]</a>    <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">command</span><span class="p">,</span>
 381         <span class="n">sudo</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
 382         <span class="n">env</span> <span class="o">=</span> <span class="bp">None</span><span class="p">,</span>
 383         <span class="n">tty</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
 384         <span class="n">forward_x11</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
 385         <span class="n">retry</span> <span class="o">=</span> <span class="mi">3</span><span class="p">,</span>
 386         <span class="n">connect_timeout</span> <span class="o">=</span> <span class="mi">30</span><span class="p">,</span>
 387         <span class="n">strict_host_checking</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span>
 388         <span class="n">persistent</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
 389         <span class="n">blocking</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
 390         <span class="p">):</span>
 391         <span class="sd">&quot;&quot;&quot; Notice that this invocation will block until the</span>
 392 <span class="sd">        execution finishes. If this is not the desired behavior,</span>
 393 <span class="sd">        use &#39;run&#39; instead.&quot;&quot;&quot;</span>
 394         <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="n">sshfuncs</span><span class="o">.</span><span class="n">rexec</span><span class="p">(</span>
 395             <span class="n">command</span><span class="p">,</span>
 396             <span class="n">host</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;host&quot;</span><span class="p">),</span>
 397             <span class="n">user</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;username&quot;</span><span class="p">),</span>
 398             <span class="n">port</span> <span class="o">=</span> <span class="mi">22</span><span class="p">,</span>
 399             <span class="n">gwuser</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;gatewayUser&quot;</span><span class="p">),</span>
 400             <span class="n">gw</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;gateway&quot;</span><span class="p">),</span>
 401             <span class="n">agent</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
 402             <span class="n">sudo</span> <span class="o">=</span> <span class="n">sudo</span><span class="p">,</span>
 403             <span class="n">identity</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;identity&quot;</span><span class="p">),</span>
 404             <span class="n">server_key</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;serverKey&quot;</span><span class="p">),</span>
 405             <span class="n">env</span> <span class="o">=</span> <span class="n">env</span><span class="p">,</span>
 406             <span class="n">tty</span> <span class="o">=</span> <span class="n">tty</span><span class="p">,</span>
 407             <span class="n">forward_x11</span> <span class="o">=</span> <span class="n">forward_x11</span><span class="p">,</span>
 408             <span class="n">retry</span> <span class="o">=</span> <span class="n">retry</span><span class="p">,</span>
 409             <span class="n">connect_timeout</span> <span class="o">=</span> <span class="n">connect_timeout</span><span class="p">,</span>
 410             <span class="n">persistent</span> <span class="o">=</span> <span class="n">persistent</span><span class="p">,</span>
 411             <span class="n">blocking</span> <span class="o">=</span> <span class="n">blocking</span><span class="p">,</span>
 412             <span class="n">strict_host_checking</span> <span class="o">=</span> <span class="n">strict_host_checking</span>
 413             <span class="p">)</span>
 414
 415         <span class="k">return</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>
 416
 417 </div>
 418     <span class="k">def</span> <span class="nf">_add_node_to_slice</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">):</span>
 419         <span class="sd">&quot;&quot;&quot;</span>
 420 <span class="sd">        Add node to slice, using SFA API. Actually Wilabt testbed</span>
 421 <span class="sd">        doesn&#39;t allow adding nodes, in fact in the API there is method</span>
 422 <span class="sd">        to group all the nodes instanciated as WilabtSfaNodes and the</span>
 423 <span class="sd">        Allocate and Provision is done with the last call at </span>
 424 <span class="sd">        sfaapi.add_resource_to_slice_batch.</span>
 425 <span class="sd">        &quot;&quot;&quot;</span>
 426         <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot; Adding node to slice &quot;</span><span class="p">)</span>
 427         <span class="n">slicename</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;slicename&quot;</span><span class="p">)</span>
 428         <span class="n">disk_image</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;disk_image&quot;</span><span class="p">)</span>
 429         <span class="k">if</span> <span class="n">disk_image</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
 430             <span class="n">properties</span> <span class="o">=</span> <span class="p">{</span><span class="s">&#39;disk_image&#39;</span><span class="p">:</span> <span class="n">disk_image</span><span class="p">}</span>
 431         <span class="k">else</span><span class="p">:</span> <span class="n">properties</span> <span class="o">=</span> <span class="bp">None</span>
 432         <span class="c">#properties = None</span>
 433         <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">add_resource_to_slice_batch</span><span class="p">(</span><span class="n">slicename</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">,</span> <span class="n">properties</span><span class="o">=</span><span class="n">properties</span><span class="p">)</span>
 434
 435     <span class="k">def</span> <span class="nf">_delete_from_slice</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 436         <span class="sd">&quot;&quot;&quot;</span>
 437 <span class="sd">        Delete every node from slice, using SFA API.</span>
 438 <span class="sd">        Wilabt doesn&#39;t allow to remove one sliver so this method </span>
 439 <span class="sd">        remove every slice from the slice.</span>
 440 <span class="sd">        &quot;&quot;&quot;</span>
 441
 442         <span class="bp">self</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s">&quot; Deleting all slivers from slice &quot;</span><span class="p">)</span>
 443         <span class="n">slicename</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;slicename&quot;</span><span class="p">)</span>
 444         <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">remove_all_from_slice</span><span class="p">(</span><span class="n">slicename</span><span class="p">)</span>
 445
 446     <span class="k">def</span> <span class="nf">_get_host</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 447         <span class="sd">&quot;&quot;&quot;</span>
 448 <span class="sd">        Get the attribute hostname.</span>
 449 <span class="sd">        &quot;&quot;&quot;</span>
 450         <span class="n">host</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;host&quot;</span><span class="p">)</span>
 451         <span class="k">if</span> <span class="n">host</span><span class="p">:</span>
 452             <span class="k">return</span> <span class="n">host</span>
 453         <span class="k">else</span><span class="p">:</span>
 454             <span class="k">return</span> <span class="bp">None</span>
 455
 456     <span class="k">def</span> <span class="nf">_set_host_attr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">node</span><span class="p">):</span>
 457         <span class="sd">&quot;&quot;&quot;</span>
 458 <span class="sd">        Query SFAAPI for the hostname of a certain host hrn and sets the</span>
 459 <span class="sd">        attribute hostname, it will over write the previous value.</span>
 460 <span class="sd">        &quot;&quot;&quot;</span>
 461         <span class="n">hosts_hrn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">get_resources_hrn</span><span class="p">()</span>
 462         <span class="k">for</span> <span class="n">host</span><span class="p">,</span> <span class="n">hrn</span>  <span class="ow">in</span> <span class="n">hosts_hrn</span><span class="o">.</span><span class="n">iteritems</span><span class="p">():</span>
 463             <span class="k">if</span> <span class="n">hrn</span> <span class="o">==</span> <span class="n">node</span><span class="p">:</span>
 464                 <span class="n">host</span> <span class="o">=</span> <span class="n">host</span> <span class="o">+</span> <span class="s">&#39;.wilab2.ilabt.iminds.be&#39;</span>
 465                 <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;host&quot;</span><span class="p">,</span> <span class="n">host</span><span class="p">)</span>
 466
 467     <span class="k">def</span> <span class="nf">_check_if_in_slice</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">hosts_hrn</span><span class="p">):</span>
 468         <span class="sd">&quot;&quot;&quot;</span>
 469 <span class="sd">        Check using SFA API if any host hrn from hosts_hrn is in the user&#39;s</span>
 470 <span class="sd">        slice.</span>
 471 <span class="sd">        &quot;&quot;&quot;</span>
 472         <span class="n">slicename</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;slicename&quot;</span><span class="p">)</span>
 473         <span class="n">slice_nodes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">get_slice_resources</span><span class="p">(</span><span class="n">slicename</span><span class="p">)[</span><span class="s">&#39;resource&#39;</span><span class="p">]</span>
 474         <span class="k">if</span> <span class="n">slice_nodes</span><span class="p">:</span>
 475             <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">slice_nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="s">&#39;services&#39;</span><span class="p">])</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
 476                 <span class="n">slice_nodes_hrn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">get_resources_hrn</span><span class="p">(</span><span class="n">slice_nodes</span><span class="p">)</span><span class="o">.</span><span class="n">values</span><span class="p">()</span>
 477         <span class="k">else</span><span class="p">:</span> <span class="n">slice_nodes_hrn</span> <span class="o">=</span> <span class="p">[]</span>
 478         <span class="n">nodes_inslice</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">hosts_hrn</span><span class="p">)</span> <span class="o">&amp;</span> <span class="nb">set</span><span class="p">(</span><span class="n">slice_nodes_hrn</span><span class="p">))</span>
 479         <span class="k">return</span> <span class="n">nodes_inslice</span>
 480
 481     <span class="k">def</span> <span class="nf">_blacklist_node</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">):</span>
 482         <span class="sd">&quot;&quot;&quot;</span>
 483 <span class="sd">        Add mal functioning node to blacklist (in SFA API).</span>
 484 <span class="sd">        &quot;&quot;&quot;</span>
 485         <span class="bp">self</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s">&quot; Blacklisting malfunctioning node &quot;</span><span class="p">)</span>
 486         <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">blacklist_resource</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">)</span>
 487         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_host</span><span class="p">:</span>
 488             <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&#39;host&#39;</span><span class="p">,</span> <span class="bp">None</span><span class="p">)</span>
 489         <span class="k">else</span><span class="p">:</span>
 490             <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&#39;host&#39;</span><span class="p">,</span> <span class="n">host_hrn</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&#39;.&#39;</span><span class="p">)</span><span class="o">.</span><span class="n">pop</span><span class="p">())</span>
 491
 492     <span class="k">def</span> <span class="nf">_put_node_in_provision</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host_hrn</span><span class="p">):</span>
 493         <span class="sd">&quot;&quot;&quot;</span>
 494 <span class="sd">        Add node to the list of nodes being provisioned, in order for other RMs</span>
 495 <span class="sd">        to not try to provision the same one again.</span>
 496 <span class="sd">        &quot;&quot;&quot;</span>
 497         <span class="bp">self</span><span class="o">.</span><span class="n">sfaapi</span><span class="o">.</span><span class="n">reserve_resource</span><span class="p">(</span><span class="n">host_hrn</span><span class="p">)</span>
 498
 499     <span class="k">def</span> <span class="nf">_get_ip</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host</span><span class="p">):</span>
 500         <span class="sd">&quot;&quot;&quot;</span>
 501 <span class="sd">        Query cache for the IP of a node with certain hostname</span>
 502 <span class="sd">        &quot;&quot;&quot;</span>
 503         <span class="k">try</span><span class="p">:</span>
 504             <span class="n">ip</span> <span class="o">=</span> <span class="n">sshfuncs</span><span class="o">.</span><span class="n">gethostbyname</span><span class="p">(</span><span class="n">host</span><span class="p">)</span>
 505         <span class="k">except</span><span class="p">:</span>
 506             <span class="c"># Fail while trying to find the IP</span>
 507             <span class="k">return</span> <span class="bp">None</span>
 508         <span class="k">return</span> <span class="n">ip</span>
 509
 510 <div class="viewcode-block" id="WilabtSfaNode.fail_discovery"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.fail_discovery">[docs]</a>    <span class="k">def</span> <span class="nf">fail_discovery</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 511         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Discovery failed. No candidates found for node&quot;</span>
 512         <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>
 513         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 514 </div>
 515 <div class="viewcode-block" id="WilabtSfaNode.fail_node_not_alive"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.fail_node_not_alive">[docs]</a>    <span class="k">def</span> <span class="nf">fail_node_not_alive</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
 516         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Node </span><span class="si">%s</span><span class="s"> not alive&quot;</span> <span class="o">%</span> <span class="n">host</span>
 517         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 518     </div>
 519 <div class="viewcode-block" id="WilabtSfaNode.fail_node_not_available"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.fail_node_not_available">[docs]</a>    <span class="k">def</span> <span class="nf">fail_node_not_available</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">host</span><span class="p">):</span>
 520         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Some nodes not available for provisioning&quot;</span>
 521         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 522 </div>
 523 <div class="viewcode-block" id="WilabtSfaNode.fail_not_enough_nodes"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.fail_not_enough_nodes">[docs]</a>    <span class="k">def</span> <span class="nf">fail_not_enough_nodes</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 524         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Not enough nodes available for provisioning&quot;</span>
 525         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 526 </div>
 527 <div class="viewcode-block" id="WilabtSfaNode.fail_sfaapi"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.fail_sfaapi">[docs]</a>    <span class="k">def</span> <span class="nf">fail_sfaapi</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 528         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Failing while trying to instanciate the SFA API.&quot;</span>
 529         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 530 </div>
 531 <div class="viewcode-block" id="WilabtSfaNode.valid_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.omf.html#nepi.resources.omf.wilabt_node.WilabtSfaNode.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>
 532         <span class="c"># TODO: Validate!</span>
 533         <span class="k">return</span> <span class="bp">True</span>
 534 </pre></div></div></div>
 535
 536           </div>
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