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community.general/html/_modules/taboot/tasks/rpm.html
Tim Bielawa 5e453555e3 Let me upgrade your docs
2012-03-07 11:35:18 -05:00

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<h1>Source code for taboot.tasks.rpm</h1><div class="highlight"><pre>
<span class="c"># -*- coding: utf-8 -*-</span>
<span class="c"># Taboot - Client utility for performing deployments with Func.</span>
<span class="c"># Copyright © 2009,2010, Red Hat, Inc.</span>
<span class="c">#</span>
<span class="c"># This program is free software: you can redistribute it and/or modify</span>
<span class="c"># it under the terms of the GNU General Public License as published by</span>
<span class="c"># the Free Software Foundation, either version 3 of the License, or</span>
<span class="c"># (at your option) any later version.</span>
<span class="c">#</span>
<span class="c"># This program is distributed in the hope that it will be useful,</span>
<span class="c"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="c"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="c"># GNU General Public License for more details.</span>
<span class="c">#</span>
<span class="c"># You should have received a copy of the GNU General Public License</span>
<span class="c"># along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<span class="kn">from</span> <span class="nn">taboot.tasks</span> <span class="kn">import</span> <span class="n">command</span><span class="p">,</span> <span class="n">TaskResult</span>
<div class="viewcode-block" id="RPMBase"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.RPMBase">[docs]</a><span class="k">class</span> <span class="nc">RPMBase</span><span class="p">(</span><span class="n">command</span><span class="o">.</span><span class="n">Run</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Base class for rpm commands</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pcmd</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">RPMBase</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">pcmd</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="PreManifest"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.PreManifest">[docs]</a><span class="k">class</span> <span class="nc">PreManifest</span><span class="p">(</span><span class="n">command</span><span class="o">.</span><span class="n">Run</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Gather list of installed RPMs. A later invocation of :class:`PostManifest`</span>
<span class="sd"> is then used to output the RPMs changed during intermediate tasks.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">PreManifest</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="s">&#39;rpm -qa | sort&#39;</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<div class="viewcode-block" id="PreManifest.run"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.PreManifest.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">runner</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Override the default :class:`command.Run` to strip the output</span>
<span class="sd"> from the result because we&#39;re really not interested in the</span>
<span class="sd"> contents of the pre-manifest; we just want to collect it to</span>
<span class="sd"> compare later on with PostManifest.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">result</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">PreManifest</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">runner</span><span class="p">)</span>
<span class="n">runner</span><span class="p">[</span><span class="s">&#39;rpm.PreManifest&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">result</span><span class="o">.</span><span class="n">output</span>
<span class="n">result</span><span class="o">.</span><span class="n">output</span> <span class="o">=</span> <span class="s">&#39;&#39;</span>
<span class="k">return</span> <span class="n">result</span>
</div></div>
<div class="viewcode-block" id="PostManifest"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.PostManifest">[docs]</a><span class="k">class</span> <span class="nc">PostManifest</span><span class="p">(</span><span class="n">command</span><span class="o">.</span><span class="n">Run</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Gather list of installed RPMs and compare against a previously</span>
<span class="sd"> taken :class:`PreManifest`</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">difflib</span> <span class="kn">import</span> <span class="n">Differ</span> <span class="k">as</span> <span class="n">_Differ</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">PostManifest</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="s">&#39;rpm -qa | sort&#39;</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<div class="viewcode-block" id="PostManifest.run"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.PostManifest.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">runner</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> The runner that gets passed in contains state that can be</span>
<span class="sd"> access via dict-like access. PreManifest uses this to write</span>
<span class="sd"> to the rpm.Premanifest field. So we&#39;ll check to make sure the</span>
<span class="sd"> pre-manifest is there by looking for that state.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">pre_manifest</span> <span class="o">=</span> <span class="n">runner</span><span class="p">[</span><span class="s">&#39;rpm.PreManifest&#39;</span><span class="p">]</span>
<span class="k">except</span><span class="p">:</span>
<span class="k">return</span> <span class="n">TaskResult</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">success</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span>
<span class="n">output</span><span class="o">=</span><span class="s">&quot;You must use PreManifest before PostManifest&quot;</span><span class="p">)</span>
<span class="c"># ok, so now we have something to compare against so we get</span>
<span class="c"># new state...</span>
<span class="n">result</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">command</span><span class="o">.</span><span class="n">Run</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">runner</span><span class="p">)</span>
<span class="n">old_list</span> <span class="o">=</span> <span class="n">pre_manifest</span><span class="o">.</span><span class="n">splitlines</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="n">new_list</span> <span class="o">=</span> <span class="n">result</span><span class="o">.</span><span class="n">output</span><span class="o">.</span><span class="n">splitlines</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="n">differ</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_Differ</span><span class="p">()</span>
<span class="n">diff_output</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">differ</span><span class="o">.</span><span class="n">compare</span><span class="p">(</span><span class="n">old_list</span><span class="p">,</span> <span class="n">new_list</span><span class="p">))</span>
<span class="n">diff_output</span> <span class="o">=</span> <span class="p">[</span><span class="n">line</span> <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">diff_output</span> <span class="k">if</span> <span class="n">line</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="ow">in</span> <span class="p">(</span><span class="s">&#39;+&#39;</span><span class="p">,</span> <span class="s">&#39;-&#39;</span><span class="p">)]</span>
<span class="n">result</span><span class="o">.</span><span class="n">output</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">diff_output</span><span class="p">)</span>
<span class="k">return</span> <span class="n">RPMTaskResult</span><span class="p">(</span><span class="n">result</span><span class="o">.</span><span class="n">taskObj</span><span class="p">,</span> <span class="n">result</span><span class="o">.</span><span class="n">success</span><span class="p">,</span>
<span class="n">result</span><span class="o">.</span><span class="n">output</span><span class="p">,</span> <span class="n">result</span><span class="o">.</span><span class="n">ignore_errors</span><span class="p">)</span>
</div></div>
<div class="viewcode-block" id="RPMTaskResult"><a class="viewcode-back" href="../../../code.html#taboot.tasks.rpm.RPMTaskResult">[docs]</a><span class="k">class</span> <span class="nc">RPMTaskResult</span><span class="p">(</span><span class="n">TaskResult</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Wrapper around TaskResult to be able to differentiate in output class</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task</span><span class="p">,</span> <span class="n">success</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span> <span class="n">output</span><span class="o">=</span><span class="s">&#39;&#39;</span><span class="p">,</span> <span class="n">ignore_errors</span><span class="o">=</span><span class="bp">False</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">RPMTaskResult</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">task</span><span class="p">,</span> <span class="n">success</span><span class="p">,</span> <span class="n">output</span><span class="p">,</span>
<span class="n">ignore_errors</span><span class="p">)</span></div>
</pre></div>
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