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<h1>Source code for pylorax.api.yumbase</h1><div class="highlight"><pre>
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<span class="c">#</span>
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<span class="c"># Copyright (C) 2017 Red Hat, Inc.</span>
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<span class="c">#</span>
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<span class="c"># This program is free software; you can redistribute it and/or modify</span>
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<span class="c"># it under the terms of the GNU General Public License as published by</span>
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<span class="c"># the Free Software Foundation; either version 2 of the License, or</span>
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<span class="c"># (at your option) any later version.</span>
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<span class="c">#</span>
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<span class="c"># This program is distributed in the hope that it will be useful,</span>
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<span class="c"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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<span class="c"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
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<span class="c"># GNU General Public License for more details.</span>
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<span class="c">#</span>
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<span class="c"># You should have received a copy of the GNU General Public License</span>
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<span class="c"># along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
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<span class="c">#</span>
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<span class="c"># pylint: disable=bad-preconf-access</span>
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<span class="kn">import</span> <span class="nn">logging</span>
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<span class="n">log</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s">"lorax-composer"</span><span class="p">)</span>
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<span class="kn">import</span> <span class="nn">ConfigParser</span>
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<span class="kn">from</span> <span class="nn">fnmatch</span> <span class="kn">import</span> <span class="n">fnmatchcase</span>
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<span class="kn">from</span> <span class="nn">glob</span> <span class="kn">import</span> <span class="n">glob</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">yum</span>
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<span class="kn">from</span> <span class="nn">yum.Errors</span> <span class="kn">import</span> <span class="n">YumBaseError</span>
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<span class="c"># This is a hack to short circuit yum's internal logging</span>
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<span class="n">yum</span><span class="o">.</span><span class="n">logginglevels</span><span class="o">.</span><span class="n">_added_handlers</span> <span class="o">=</span> <span class="bp">True</span>
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<span class="kn">from</span> <span class="nn">pylorax.sysutils</span> <span class="kn">import</span> <span class="n">joinpaths</span>
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<div class="viewcode-block" id="get_base_object"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.yumbase.get_base_object">[docs]</a><span class="k">def</span> <span class="nf">get_base_object</span><span class="p">(</span><span class="n">conf</span><span class="p">):</span>
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<span class="sd">"""Get the Yum object with settings from the config file</span>
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<span class="sd"> :param conf: configuration object</span>
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<span class="sd"> :type conf: ComposerParser</span>
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<span class="sd"> :returns: A Yum base object</span>
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<span class="sd"> :rtype: YumBase</span>
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<span class="sd"> """</span>
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<span class="n">cachedir</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">abspath</span><span class="p">(</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"composer"</span><span class="p">,</span> <span class="s">"cache_dir"</span><span class="p">))</span>
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<span class="n">yumconf</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">abspath</span><span class="p">(</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"composer"</span><span class="p">,</span> <span class="s">"yum_conf"</span><span class="p">))</span>
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<span class="n">yumroot</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">abspath</span><span class="p">(</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"composer"</span><span class="p">,</span> <span class="s">"yum_root"</span><span class="p">))</span>
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<span class="n">repodir</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">abspath</span><span class="p">(</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"composer"</span><span class="p">,</span> <span class="s">"repo_dir"</span><span class="p">))</span>
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<span class="n">c</span> <span class="o">=</span> <span class="n">ConfigParser</span><span class="o">.</span><span class="n">ConfigParser</span><span class="p">()</span>
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<span class="c"># add the main section</span>
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<span class="n">section</span> <span class="o">=</span> <span class="s">"main"</span>
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<span class="n">data</span> <span class="o">=</span> <span class="p">{</span><span class="s">"cachedir"</span><span class="p">:</span> <span class="n">cachedir</span><span class="p">,</span>
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<span class="s">"keepcache"</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
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<span class="s">"gpgcheck"</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
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<span class="s">"plugins"</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
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<span class="s">"assumeyes"</span><span class="p">:</span> <span class="mi">1</span><span class="p">,</span>
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<span class="s">"reposdir"</span><span class="p">:</span> <span class="s">""</span><span class="p">,</span>
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<span class="s">"tsflags"</span><span class="p">:</span> <span class="s">"nodocs"</span><span class="p">}</span>
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<span class="k">if</span> <span class="n">conf</span><span class="o">.</span><span class="n">get_default</span><span class="p">(</span><span class="s">"yum"</span><span class="p">,</span> <span class="s">"proxy"</span><span class="p">,</span> <span class="bp">None</span><span class="p">):</span>
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<span class="n">data</span><span class="p">[</span><span class="s">"proxy"</span><span class="p">]</span> <span class="o">=</span> <span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"yum"</span><span class="p">,</span> <span class="s">"proxy"</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">conf</span><span class="o">.</span><span class="n">has_option</span><span class="p">(</span><span class="s">"yum"</span><span class="p">,</span> <span class="s">"sslverify"</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">conf</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s">"yum"</span><span class="p">,</span> <span class="s">"sslverify"</span><span class="p">):</span>
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<span class="n">data</span><span class="p">[</span><span class="s">"sslverify"</span><span class="p">]</span> <span class="o">=</span> <span class="s">"0"</span>
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<span class="n">c</span><span class="o">.</span><span class="n">add_section</span><span class="p">(</span><span class="n">section</span><span class="p">)</span>
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<span class="nb">map</span><span class="p">(</span><span class="k">lambda</span> <span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">c</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">section</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">),</span> <span class="n">data</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
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<span class="c"># write the yum configuration file</span>
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<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">yumconf</span><span class="p">,</span> <span class="s">"w"</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
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<span class="n">c</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">f</span><span class="p">)</span>
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<span class="c"># create the yum base object</span>
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<span class="n">yb</span> <span class="o">=</span> <span class="n">yum</span><span class="o">.</span><span class="n">YumBase</span><span class="p">()</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">fn</span> <span class="o">=</span> <span class="n">yumconf</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">root</span> <span class="o">=</span> <span class="n">yumroot</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">root</span><span class="p">):</span>
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<span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">root</span><span class="p">)</span>
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<span class="n">_releasever</span> <span class="o">=</span> <span class="n">conf</span><span class="o">.</span><span class="n">get_default</span><span class="p">(</span><span class="s">"composer"</span><span class="p">,</span> <span class="s">"releasever"</span><span class="p">,</span> <span class="bp">None</span><span class="p">)</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">_releasever</span><span class="p">:</span>
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<span class="n">distroverpkg</span> <span class="o">=</span> <span class="p">[</span><span class="s">'system-release(releasever)'</span><span class="p">,</span> <span class="s">'redhat-release'</span><span class="p">]</span>
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<span class="c"># Use yum private function to guess the releasever</span>
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<span class="n">_releasever</span> <span class="o">=</span> <span class="n">yum</span><span class="o">.</span><span class="n">config</span><span class="o">.</span><span class="n">_getsysver</span><span class="p">(</span><span class="s">"/"</span><span class="p">,</span> <span class="n">distroverpkg</span><span class="p">)</span>
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<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"releasever = </span><span class="si">%s</span><span class="s">"</span><span class="p">,</span> <span class="n">_releasever</span><span class="p">)</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">releasever</span> <span class="o">=</span> <span class="n">_releasever</span>
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<span class="c"># Turn on as much yum logging as we can</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">debuglevel</span> <span class="o">=</span> <span class="mi">6</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">preconf</span><span class="o">.</span><span class="n">errorlevel</span> <span class="o">=</span> <span class="mi">6</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">setLevel</span><span class="p">(</span><span class="n">logging</span><span class="o">.</span><span class="n">DEBUG</span><span class="p">)</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">verbose_logger</span><span class="o">.</span><span class="n">setLevel</span><span class="p">(</span><span class="n">logging</span><span class="o">.</span><span class="n">DEBUG</span><span class="p">)</span>
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<span class="c"># Gather up all the available repo files, add the ones matching "repos":"enabled" patterns</span>
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<span class="n">enabled_repos</span> <span class="o">=</span> <span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">"repos"</span><span class="p">,</span> <span class="s">"enabled"</span><span class="p">)</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">","</span><span class="p">)</span>
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<span class="n">repo_files</span> <span class="o">=</span> <span class="n">glob</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">repodir</span><span class="p">,</span> <span class="s">"*.repo"</span><span class="p">))</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">conf</span><span class="o">.</span><span class="n">has_option</span><span class="p">(</span><span class="s">"repos"</span><span class="p">,</span> <span class="s">"use_system_repos"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">conf</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s">"repos"</span><span class="p">,</span> <span class="s">"use_system_repos"</span><span class="p">):</span>
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<span class="n">repo_files</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">glob</span><span class="p">(</span><span class="s">"/etc/yum.repos.d/*.repo"</span><span class="p">))</span>
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<span class="k">for</span> <span class="n">repo_file</span> <span class="ow">in</span> <span class="n">repo_files</span><span class="p">:</span>
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<span class="n">name</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">basename</span><span class="p">(</span><span class="n">repo_file</span><span class="p">)[:</span><span class="o">-</span><span class="mi">5</span><span class="p">]</span>
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<span class="k">if</span> <span class="nb">any</span><span class="p">(</span><span class="nb">map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">pattern</span><span class="p">:</span> <span class="n">fnmatchcase</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">pattern</span><span class="p">),</span> <span class="n">enabled_repos</span><span class="p">)):</span> <span class="c"># pylint: disable=cell-var-from-loop</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">getReposFromConfigFile</span><span class="p">(</span><span class="n">repo_file</span><span class="p">)</span>
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<span class="c"># Update the metadata from the enabled repos to speed up later operations</span>
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<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">"Updating yum repository metadata"</span><span class="p">)</span>
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<span class="n">update_metadata</span><span class="p">(</span><span class="n">yb</span><span class="p">)</span>
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<span class="k">return</span> <span class="n">yb</span>
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</div>
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<div class="viewcode-block" id="update_metadata"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.yumbase.update_metadata">[docs]</a><span class="k">def</span> <span class="nf">update_metadata</span><span class="p">(</span><span class="n">yb</span><span class="p">):</span>
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<span class="sd">"""Update the metadata for all the enabled repos</span>
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<span class="sd"> :param yb: The Yum base object</span>
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<span class="sd"> :type yb: yum.YumBase</span>
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<span class="sd"> :returns: None</span>
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<span class="sd"> :rtype: None</span>
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<span class="sd"> """</span>
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<span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">yb</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">sort</span><span class="p">():</span>
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<span class="n">r</span><span class="o">.</span><span class="n">metadata_expire</span> <span class="o">=</span> <span class="mi">0</span>
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<span class="n">r</span><span class="o">.</span><span class="n">mdpolicy</span> <span class="o">=</span> <span class="s">"group:all"</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">doRepoSetup</span><span class="p">()</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">doSetup</span><span class="p">()</span>
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<span class="n">yb</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">populateSack</span><span class="p">(</span><span class="n">mdtype</span><span class="o">=</span><span class="s">'all'</span><span class="p">,</span> <span class="n">cacheonly</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
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<span class="k">except</span> <span class="n">YumBaseError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
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<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s">"Failed to update metadata: </span><span class="si">%s</span><span class="s">"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">))</span>
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<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s">"Fetching metadata failed: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">))</span></div>
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</pre></div>
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</div>
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</div>
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</div>
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