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<h1>Source code for package_utils.portage_log_parser</h1><div class="highlight"><pre>
<span class="c">#!/usr/bin/env python2</span>
<span class="c"># parse log and get packages actually merged</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">import</span> <span class="nn">time</span>
<span class="c"># the log path seems to be always on that path</span>
<span class="c"># see <portage_lib_path>/pym/_emerge/emergelog.py</span>
<span class="n">log_path</span><span class="o">=</span><span class="s">'/var/log/emerge.log'</span>
<div class="viewcode-block" id="get_list_of_merged_packages"><a class="viewcode-back" href="../../api.html#package_utils.portage_log_parser.get_list_of_merged_packages">[docs]</a><span class="k">def</span> <span class="nf">get_list_of_merged_packages</span><span class="p">(</span><span class="n">starttime</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span><span class="n">endtime</span><span class="o">=-</span><span class="mi">1</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Parses an emerge log and finds first successfully merged packages chain</span>
<span class="sd"> :param starttime: start time for searching(in seconds since 1970)</span>
<span class="sd"> :param starttime: end time for searching(in seconds since 1970).</span>
<span class="sd"> :returns: **list** of package names</span>
<span class="sd"> </span>
<span class="sd"> """</span>
<span class="n">ret</span><span class="o">=</span><span class="p">[]</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">log</span><span class="o">=</span><span class="nb">open</span><span class="p">(</span><span class="n">log_path</span><span class="p">)</span>
<span class="n">found_begining</span><span class="o">=</span><span class="bp">False</span>
<span class="n">current_package</span><span class="o">=</span><span class="s">''</span>
<span class="n">current_package_num</span><span class="o">=</span><span class="mi">0</span>
<span class="n">total_packages_num</span><span class="o">=</span><span class="mi">0</span>
<span class="n">expect_start</span><span class="o">=</span><span class="bp">True</span>
<span class="n">expect_end</span><span class="o">=</span><span class="bp">False</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">log</span><span class="p">:</span>
<span class="k">if</span> <span class="s">':'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">line</span><span class="p">:</span> <span class="c"># skipping bad strings</span>
<span class="k">continue</span>
<span class="n">msgtime</span><span class="p">,</span><span class="n">msgtext</span><span class="o">=</span><span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">':'</span><span class="p">,</span><span class="mi">1</span><span class="p">)</span>
<span class="n">msgtime</span><span class="p">,</span><span class="n">msgtext</span><span class="o">=</span><span class="nb">int</span><span class="p">(</span><span class="n">msgtime</span><span class="p">),</span><span class="n">msgtext</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
<span class="k">if</span> <span class="n">msgtime</span><span class="o"><</span><span class="n">starttime</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">endtime</span><span class="o">!=-</span><span class="mi">1</span> <span class="ow">and</span> <span class="n">msgtime</span><span class="o">></span><span class="n">endtime</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">msgtext</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s">"Started emerge on: "</span><span class="p">):</span>
<span class="c"># doing an additional check: we have msg like:</span>
<span class="c"># 1310909507: Started emerge on: Jul 17, 2011 13:31:47</span>
<span class="c"># we want to make sure that two variants of time is not</span>
<span class="c"># distinguish more than on 2 days(local timezone may be changed)</span>
<span class="c"># we protect self from malformed and broken log files</span>
<span class="n">msg</span><span class="p">,</span> <span class="n">date</span> <span class="o">=</span> <span class="n">msgtext</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">": "</span><span class="p">,</span><span class="mi">1</span><span class="p">)</span>
<span class="n">msgtime2</span><span class="o">=</span><span class="n">time</span><span class="o">.</span><span class="n">mktime</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">strptime</span><span class="p">(</span><span class="n">date</span><span class="p">,</span><span class="s">"%b </span><span class="si">%d</span><span class="s">, %Y %H:%M:%S"</span><span class="p">))</span>
<span class="k">if</span> <span class="nb">abs</span><span class="p">(</span><span class="n">msgtime</span><span class="o">-</span><span class="n">msgtime2</span><span class="p">)</span><span class="o">></span><span class="mi">60</span><span class="o">*</span><span class="mi">60</span><span class="o">*</span><span class="mi">24</span><span class="o">*</span><span class="mi">2</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">found_begining</span><span class="o">=</span><span class="bp">True</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">found_begining</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">expect_start</span> <span class="ow">and</span> <span class="n">msgtext</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s">">>> emerge "</span><span class="p">):</span>
<span class="c"># string example: >>> emerge (1 of 1) sys-process/lsof-4.84 to /</span>
<span class="n">m</span><span class="o">=</span><span class="n">re</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="s">r">>> emerge \((\d+) of (\d+)\) (\S+) to"</span><span class="p">,</span><span class="n">msgtext</span><span class="p">)</span>
<span class="k">if</span> <span class="n">m</span><span class="p">:</span>
<span class="n">pkgnum</span><span class="p">,</span><span class="n">total_pkgnum</span><span class="p">,</span><span class="n">pkgname</span><span class="o">=</span><span class="n">m</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span><span class="n">m</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">2</span><span class="p">),</span> <span class="n">m</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span>
<span class="k">if</span> <span class="n">total_packages_num</span><span class="o">==</span><span class="mi">0</span><span class="p">:</span>
<span class="n">total_packages_num</span><span class="o">=</span><span class="n">total_pkgnum</span>
<span class="k">elif</span> <span class="n">total_packages_num</span><span class="o">!=</span><span class="n">total_pkgnum</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">current_package_num</span><span class="o">=</span><span class="n">pkgnum</span>
<span class="n">current_package</span><span class="o">=</span><span class="n">pkgname</span>
<span class="n">expect_start</span><span class="o">=</span><span class="bp">False</span>
<span class="n">expect_end</span><span class="o">=</span><span class="bp">True</span>
<span class="k">elif</span> <span class="n">expect_end</span> <span class="ow">and</span> <span class="n">msgtext</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span>
<span class="s">"::: completed emerge ("</span> <span class="o">+</span> <span class="n">current_package_num</span> <span class="o">+</span> <span class="s">" of "</span> <span class="o">+</span>
<span class="n">total_packages_num</span> <span class="o">+</span> <span class="s">") "</span> <span class="o">+</span> <span class="n">current_package</span><span class="p">):</span>
<span class="n">ret</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">current_package</span><span class="p">)</span>
<span class="k">if</span> <span class="n">total_packages_num</span><span class="o">==</span><span class="n">current_package_num</span><span class="p">:</span>
<span class="k">break</span>
<span class="n">expect_start</span><span class="o">=</span><span class="bp">True</span>
<span class="n">expect_end</span><span class="o">=</span><span class="bp">False</span>
<span class="n">log</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="k">return</span> <span class="n">ret</span>
<span class="k">except</span> <span class="ne">IOError</span><span class="p">,</span><span class="n">e</span><span class="p">:</span>
<span class="k">print</span> <span class="s">"Error while opening logfile. </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">e</span>
<span class="k">return</span> <span class="p">[]</span>
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