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<h1>Source code for pylorax.dnfbase</h1><div class="highlight"><pre>
<span></span><span class="c1"># Copyright (C) 2018 Red Hat, Inc.</span>
<span class="c1">#</span>
<span class="c1"># This program is free software; you can redistribute it and/or modify</span>
<span class="c1"># it under the terms of the GNU General Public License as published by</span>
<span class="c1"># the Free Software Foundation; either version 2 of the License, or</span>
<span class="c1"># (at your option) any later version.</span>
<span class="c1">#</span>
<span class="c1"># This program is distributed in the hope that it will be useful,</span>
<span class="c1"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="c1"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="c1"># GNU General Public License for more details.</span>
<span class="c1">#</span>
<span class="c1"># You should have received a copy of the GNU General Public License</span>
<span class="c1"># along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
<span class="c1">#</span>
<span class="kn">import</span> <span class="nn">logging</span>
<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="s2">"pylorax"</span><span class="p">)</span>
<span class="kn">import</span> <span class="nn">dnf</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">shutil</span>
<span class="kn">from</span> <span class="nn">pylorax</span> <span class="k">import</span> <span class="n">DEFAULT_PLATFORM_ID</span>
<span class="kn">from</span> <span class="nn">pylorax.sysutils</span> <span class="k">import</span> <span class="n">flatconfig</span>
<div class="viewcode-block" id="get_dnf_base_object"><a class="viewcode-back" href="../../pylorax.html#pylorax.dnfbase.get_dnf_base_object">[docs]</a><span class="k">def</span> <span class="nf">get_dnf_base_object</span><span class="p">(</span><span class="n">installroot</span><span class="p">,</span> <span class="n">sources</span><span class="p">,</span> <span class="n">mirrorlists</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">repos</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">enablerepos</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">disablerepos</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">tempdir</span><span class="o">=</span><span class="s2">"/var/tmp"</span><span class="p">,</span> <span class="n">proxy</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">releasever</span><span class="o">=</span><span class="s2">"29"</span><span class="p">,</span>
<span class="n">cachedir</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">logdir</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">sslverify</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">dnfplugins</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">""" Create a dnf Base object and setup the repositories and installroot</span>
<span class="sd"> :param string installroot: Full path to the installroot</span>
<span class="sd"> :param list sources: List of source repo urls to use for the installation</span>
<span class="sd"> :param list enablerepos: List of repo names to enable</span>
<span class="sd"> :param list disablerepos: List of repo names to disable</span>
<span class="sd"> :param list mirrorlist: List of mirrors to use</span>
<span class="sd"> :param string tempdir: Path of temporary directory</span>
<span class="sd"> :param string proxy: http proxy to use when fetching packages</span>
<span class="sd"> :param string releasever: Release version to pass to dnf</span>
<span class="sd"> :param string cachedir: Directory to use for caching packages</span>
<span class="sd"> :param bool noverifyssl: Set to True to ignore the CA of ssl certs. eg. use self-signed ssl for https repos.</span>
<span class="sd"> If tempdir is not set /var/tmp is used.</span>
<span class="sd"> If cachedir is None a dnf.cache directory is created inside tmpdir</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="nf">sanitize_repo</span><span class="p">(</span><span class="n">repo</span><span class="p">):</span>
<span class="sd">"""Convert bare paths to file:/// URIs, and silently reject protocols unhandled by yum"""</span>
<span class="k">if</span> <span class="n">repo</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">"/"</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">"file://</span><span class="si">{0}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">repo</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">any</span><span class="p">(</span><span class="n">repo</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="p">(</span><span class="s1">'http://'</span><span class="p">,</span> <span class="s1">'https://'</span><span class="p">,</span> <span class="s1">'ftp://'</span><span class="p">,</span> <span class="s1">'file://'</span><span class="p">)):</span>
<span class="k">return</span> <span class="n">repo</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="n">mirrorlists</span> <span class="o">=</span> <span class="n">mirrorlists</span> <span class="ow">or</span> <span class="p">[]</span>
<span class="c1"># sanitize the repositories</span>
<span class="n">sources</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">sanitize_repo</span><span class="p">(</span><span class="n">r</span><span class="p">)</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">sources</span><span class="p">)</span>
<span class="n">mirrorlists</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">sanitize_repo</span><span class="p">(</span><span class="n">r</span><span class="p">)</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">mirrorlists</span><span class="p">)</span>
<span class="c1"># remove invalid repositories</span>
<span class="n">sources</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">r</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">sources</span> <span class="k">if</span> <span class="n">r</span><span class="p">)</span>
<span class="n">mirrorlists</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">r</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">mirrorlists</span> <span class="k">if</span> <span class="n">r</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">cachedir</span><span class="p">:</span>
<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">join</span><span class="p">(</span><span class="n">tempdir</span><span class="p">,</span> <span class="s2">"dnf.cache"</span><span class="p">)</span>
<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">cachedir</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">cachedir</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">logdir</span><span class="p">:</span>
<span class="n">logdir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">tempdir</span><span class="p">,</span> <span class="s2">"dnf.logs"</span><span class="p">)</span>
<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">logdir</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">logdir</span><span class="p">)</span>
<span class="n">dnfbase</span> <span class="o">=</span> <span class="n">dnf</span><span class="o">.</span><span class="n">Base</span><span class="p">()</span>
<span class="c1"># Enable DNF pluings</span>
<span class="c1"># NOTE: These come from the HOST system's environment</span>
<span class="k">if</span> <span class="n">dnfplugins</span><span class="p">:</span>
<span class="k">if</span> <span class="n">dnfplugins</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"*"</span><span class="p">:</span>
<span class="c1"># Enable them all</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">init_plugins</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># Only enable the listed plugins</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">init_plugins</span><span class="p">(</span><span class="n">disabled_glob</span><span class="o">=</span><span class="p">[</span><span class="s2">"*"</span><span class="p">],</span> <span class="n">enable_plugins</span><span class="o">=</span><span class="n">dnfplugins</span><span class="p">)</span>
<span class="n">conf</span> <span class="o">=</span> <span class="n">dnfbase</span><span class="o">.</span><span class="n">conf</span>
<span class="n">conf</span><span class="o">.</span><span class="n">logdir</span> <span class="o">=</span> <span class="n">logdir</span>
<span class="n">conf</span><span class="o">.</span><span class="n">cachedir</span> <span class="o">=</span> <span class="n">cachedir</span>
<span class="n">conf</span><span class="o">.</span><span class="n">install_weak_deps</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">conf</span><span class="o">.</span><span class="n">releasever</span> <span class="o">=</span> <span class="n">releasever</span>
<span class="n">conf</span><span class="o">.</span><span class="n">installroot</span> <span class="o">=</span> <span class="n">installroot</span>
<span class="n">conf</span><span class="o">.</span><span class="n">prepend_installroot</span><span class="p">(</span><span class="s1">'persistdir'</span><span class="p">)</span>
<span class="c1"># this is a weird 'AppendOption' thing that, when you set it,</span>
<span class="c1"># actually appends. Doing this adds 'nodocs' to the existing list</span>
<span class="c1"># of values, over in libdnf, it does not replace the existing values.</span>
<span class="n">conf</span><span class="o">.</span><span class="n">tsflags</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'nodocs'</span><span class="p">]</span>
<span class="k">if</span> <span class="n">proxy</span><span class="p">:</span>
<span class="n">conf</span><span class="o">.</span><span class="n">proxy</span> <span class="o">=</span> <span class="n">proxy</span>
<span class="k">if</span> <span class="n">sslverify</span> <span class="o">==</span> <span class="kc">False</span><span class="p">:</span>
<span class="n">conf</span><span class="o">.</span><span class="n">sslverify</span> <span class="o">=</span> <span class="kc">False</span>
<span class="c1"># DNF 3.2 needs to have module_platform_id set, otherwise depsolve won't work correctly</span>
<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">exists</span><span class="p">(</span><span class="s2">"/etc/os-release"</span><span class="p">):</span>
<span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"/etc/os-release is missing, cannot determine platform id, falling back to </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">DEFAULT_PLATFORM_ID</span><span class="p">)</span>
<span class="n">platform_id</span> <span class="o">=</span> <span class="n">DEFAULT_PLATFORM_ID</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">os_release</span> <span class="o">=</span> <span class="n">flatconfig</span><span class="p">(</span><span class="s2">"/etc/os-release"</span><span class="p">)</span>
<span class="n">platform_id</span> <span class="o">=</span> <span class="n">os_release</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"PLATFORM_ID"</span><span class="p">,</span> <span class="n">DEFAULT_PLATFORM_ID</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Using </span><span class="si">%s</span><span class="s2"> for module_platform_id"</span><span class="p">,</span> <span class="n">platform_id</span><span class="p">)</span>
<span class="n">conf</span><span class="o">.</span><span class="n">module_platform_id</span> <span class="o">=</span> <span class="n">platform_id</span>
<span class="c1"># Add .repo files</span>
<span class="k">if</span> <span class="n">repos</span><span class="p">:</span>
<span class="n">reposdir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">tempdir</span><span class="p">,</span> <span class="s2">"dnf.repos"</span><span class="p">)</span>
<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">reposdir</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">reposdir</span><span class="p">)</span>
<span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">repos</span><span class="p">:</span>
<span class="n">shutil</span><span class="o">.</span><span class="n">copy2</span><span class="p">(</span><span class="n">r</span><span class="p">,</span> <span class="n">reposdir</span><span class="p">)</span>
<span class="n">conf</span><span class="o">.</span><span class="n">reposdir</span> <span class="o">=</span> <span class="p">[</span><span class="n">reposdir</span><span class="p">]</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">read_all_repos</span><span class="p">()</span>
<span class="c1"># add the sources</span>
<span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">r</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">sources</span><span class="p">):</span>
<span class="k">if</span> <span class="s2">"SRPM"</span> <span class="ow">in</span> <span class="n">r</span> <span class="ow">or</span> <span class="s2">"srpm"</span> <span class="ow">in</span> <span class="n">r</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Skipping source repo: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="k">continue</span>
<span class="n">repo_name</span> <span class="o">=</span> <span class="s2">"lorax-repo-</span><span class="si">%d</span><span class="s2">"</span> <span class="o">%</span> <span class="n">i</span>
<span class="n">repo</span> <span class="o">=</span> <span class="n">dnf</span><span class="o">.</span><span class="n">repo</span><span class="o">.</span><span class="n">Repo</span><span class="p">(</span><span class="n">repo_name</span><span class="p">,</span> <span class="n">conf</span><span class="p">)</span>
<span class="n">repo</span><span class="o">.</span><span class="n">baseurl</span> <span class="o">=</span> <span class="p">[</span><span class="n">r</span><span class="p">]</span>
<span class="k">if</span> <span class="n">proxy</span><span class="p">:</span>
<span class="n">repo</span><span class="o">.</span><span class="n">proxy</span> <span class="o">=</span> <span class="n">proxy</span>
<span class="n">repo</span><span class="o">.</span><span class="n">enable</span><span class="p">()</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">repo</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Added '</span><span class="si">%s</span><span class="s2">': </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">repo_name</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Fetching metadata..."</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">repo</span><span class="o">.</span><span class="n">load</span><span class="p">()</span>
<span class="k">except</span> <span class="n">dnf</span><span class="o">.</span><span class="n">exceptions</span><span class="o">.</span><span class="n">RepoError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"Error fetching metadata for </span><span class="si">%s</span><span class="s2">: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">repo_name</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="c1"># add the mirrorlists</span>
<span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">r</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">mirrorlists</span><span class="p">):</span>
<span class="k">if</span> <span class="s2">"SRPM"</span> <span class="ow">in</span> <span class="n">r</span> <span class="ow">or</span> <span class="s2">"srpm"</span> <span class="ow">in</span> <span class="n">r</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Skipping source repo: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="k">continue</span>
<span class="n">repo_name</span> <span class="o">=</span> <span class="s2">"lorax-mirrorlist-</span><span class="si">%d</span><span class="s2">"</span> <span class="o">%</span> <span class="n">i</span>
<span class="n">repo</span> <span class="o">=</span> <span class="n">dnf</span><span class="o">.</span><span class="n">repo</span><span class="o">.</span><span class="n">Repo</span><span class="p">(</span><span class="n">repo_name</span><span class="p">,</span> <span class="n">conf</span><span class="p">)</span>
<span class="n">repo</span><span class="o">.</span><span class="n">mirrorlist</span> <span class="o">=</span> <span class="n">r</span>
<span class="k">if</span> <span class="n">proxy</span><span class="p">:</span>
<span class="n">repo</span><span class="o">.</span><span class="n">proxy</span> <span class="o">=</span> <span class="n">proxy</span>
<span class="n">repo</span><span class="o">.</span><span class="n">enable</span><span class="p">()</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">repo</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Added '</span><span class="si">%s</span><span class="s2">': </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">repo_name</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Fetching metadata..."</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">repo</span><span class="o">.</span><span class="n">load</span><span class="p">()</span>
<span class="k">except</span> <span class="n">dnf</span><span class="o">.</span><span class="n">exceptions</span><span class="o">.</span><span class="n">RepoError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"Error fetching metadata for </span><span class="si">%s</span><span class="s2">: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">repo_name</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="c1"># Enable repos listed on the cmdline</span>
<span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">enablerepos</span><span class="p">:</span>
<span class="n">repolist</span> <span class="o">=</span> <span class="n">dnfbase</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">get_matching</span><span class="p">(</span><span class="n">r</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">repolist</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> is an unknown repo, not enabling it"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">repolist</span><span class="o">.</span><span class="n">enable</span><span class="p">()</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Enabled repo </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="c1"># Disable repos listed on the cmdline</span>
<span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">disablerepos</span><span class="p">:</span>
<span class="n">repolist</span> <span class="o">=</span> <span class="n">dnfbase</span><span class="o">.</span><span class="n">repos</span><span class="o">.</span><span class="n">get_matching</span><span class="p">(</span><span class="n">r</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">repolist</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> is an unknown repo, not disabling it"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">repolist</span><span class="o">.</span><span class="n">disable</span><span class="p">()</span>
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Disabled repo </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">fill_sack</span><span class="p">(</span><span class="n">load_system_repo</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="n">dnfbase</span><span class="o">.</span><span class="n">read_comps</span><span class="p">()</span>
<span class="k">return</span> <span class="n">dnfbase</span></div>
</pre></div>
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