247 lines
37 KiB
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247 lines
37 KiB
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<a href="linspector.lib.core-module.html">Package core</a> ::
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Module daemon
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<h1 class="epydoc">Source Code for <a href="linspector.lib.core.daemon-module.html">Module linspector.lib.core.daemon</a></h1>
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<pre class="py-src">
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<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">sys</tt> </tt>
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<a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">os</tt> </tt>
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<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">time</tt> </tt>
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<a name="L4"></a><tt class="py-lineno"> 4</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">atexit</tt> </tt>
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<a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">signal</tt> <tt class="py-keyword">import</tt> <tt class="py-name">SIGTERM</tt> </tt>
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<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"> </tt>
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<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"> </tt>
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<a name="Daemon"></a><div id="Daemon-def"><a name="L8"></a><tt class="py-lineno"> 8</tt> <a class="py-toggle" href="#" id="Daemon-toggle" onclick="return toggle('Daemon');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html">Daemon</a><tt class="py-op">:</tt> </tt>
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</div><div id="Daemon-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="Daemon-expanded"><a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L10"></a><tt class="py-lineno"> 10</tt> <tt class="py-line"><tt class="py-docstring"> A generic daemon class.</tt> </tt>
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<a name="L11"></a><tt class="py-lineno"> 11</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L12"></a><tt class="py-lineno"> 12</tt> <tt class="py-line"><tt class="py-docstring"> Usage: subclass the Daemon class and override the run() method</tt> </tt>
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<a name="L13"></a><tt class="py-lineno"> 13</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L14"></a><tt class="py-lineno"> 14</tt> <tt class="py-line"> </tt>
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<a name="Daemon.__init__"></a><div id="Daemon.__init__-def"><a name="L15"></a><tt class="py-lineno"> 15</tt> <a class="py-toggle" href="#" id="Daemon.__init__-toggle" onclick="return toggle('Daemon.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">pidfile</tt><tt class="py-op">,</tt> <tt class="py-param">stdin</tt><tt class="py-op">=</tt><tt class="py-string">'/dev/null'</tt><tt class="py-op">,</tt> <tt class="py-param">stdout</tt><tt class="py-op">=</tt><tt class="py-string">'/dev/null'</tt><tt class="py-op">,</tt> <tt class="py-param">stderr</tt><tt class="py-op">=</tt><tt class="py-string">'/dev/null'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Daemon.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.__init__-expanded"><a name="L16"></a><tt class="py-lineno"> 16</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stdin</tt> <tt class="py-op">=</tt> <tt class="py-name">stdin</tt> </tt>
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<a name="L17"></a><tt class="py-lineno"> 17</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stdout</tt> <tt class="py-op">=</tt> <tt class="py-name">stdout</tt> </tt>
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<a name="L18"></a><tt class="py-lineno"> 18</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt> <tt class="py-op">=</tt> <tt class="py-name">stderr</tt> </tt>
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<a name="L19"></a><tt class="py-lineno"> 19</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt> <tt class="py-op">=</tt> <tt class="py-name">pidfile</tt> </tt>
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</div><a name="L20"></a><tt class="py-lineno"> 20</tt> <tt class="py-line"> </tt>
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<a name="Daemon.daemonize"></a><div id="Daemon.daemonize-def"><a name="L21"></a><tt class="py-lineno"> 21</tt> <a class="py-toggle" href="#" id="Daemon.daemonize-toggle" onclick="return toggle('Daemon.daemonize');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#daemonize">daemonize</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Daemon.daemonize-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.daemonize-expanded"><a name="L22"></a><tt class="py-lineno"> 22</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L23"></a><tt class="py-lineno"> 23</tt> <tt class="py-line"><tt class="py-docstring"> do the UNIX double-fork magic, see Stevens' "Advanced</tt> </tt>
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<a name="L24"></a><tt class="py-lineno"> 24</tt> <tt class="py-line"><tt class="py-docstring"> Programming in the UNIX Environment" for details (ISBN 0201563177)</tt> </tt>
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<a name="L25"></a><tt class="py-lineno"> 25</tt> <tt class="py-line"><tt class="py-docstring"> http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16</tt> </tt>
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<a name="L26"></a><tt class="py-lineno"> 26</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L27"></a><tt class="py-lineno"> 27</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
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<a name="L28"></a><tt class="py-lineno"> 28</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">fork</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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<a name="L29"></a><tt class="py-lineno"> 29</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">pid</tt> <tt class="py-op">></tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
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<a name="L30"></a><tt class="py-lineno"> 30</tt> <tt class="py-line"> <tt class="py-comment"># exit first parent</tt> </tt>
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<a name="L31"></a><tt class="py-lineno"> 31</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
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<a name="L32"></a><tt class="py-lineno"> 32</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt class="py-name">OSError</tt><tt class="py-op">,</tt> <tt id="link-0" class="py-name" targets="Method linspector.lib.core.logger.Logger.e()=linspector.lib.core.logger.Logger-class.html#e"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-0', 'e', 'link-0');">e</a></tt><tt class="py-op">:</tt> </tt>
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<a name="L33"></a><tt class="py-lineno"> 33</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">write</tt><tt class="py-op">(</tt><tt class="py-string">"fork #1 failed: %d (%s)\n"</tt> <tt class="py-op">%</tt> <tt class="py-op">(</tt><tt id="link-1" class="py-name"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-1', 'e', 'link-0');">e</a></tt><tt class="py-op">.</tt><tt class="py-name">errno</tt><tt class="py-op">,</tt> <tt id="link-2" class="py-name"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-2', 'e', 'link-0');">e</a></tt><tt class="py-op">.</tt><tt class="py-name">strerror</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L34"></a><tt class="py-lineno"> 34</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
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<a name="L35"></a><tt class="py-lineno"> 35</tt> <tt class="py-line"> </tt>
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<a name="L36"></a><tt class="py-lineno"> 36</tt> <tt class="py-line"> <tt class="py-comment"># decouple from parent environment</tt> </tt>
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<a name="L37"></a><tt class="py-lineno"> 37</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">chdir</tt><tt class="py-op">(</tt><tt class="py-string">"/"</tt><tt class="py-op">)</tt> </tt>
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<a name="L38"></a><tt class="py-lineno"> 38</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">setsid</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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<a name="L39"></a><tt class="py-lineno"> 39</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">umask</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
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<a name="L40"></a><tt class="py-lineno"> 40</tt> <tt class="py-line"> </tt>
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<a name="L41"></a><tt class="py-lineno"> 41</tt> <tt class="py-line"> <tt class="py-comment"># do second fork</tt> </tt>
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<a name="L42"></a><tt class="py-lineno"> 42</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
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<a name="L43"></a><tt class="py-lineno"> 43</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">fork</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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<a name="L44"></a><tt class="py-lineno"> 44</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">pid</tt> <tt class="py-op">></tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
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<a name="L45"></a><tt class="py-lineno"> 45</tt> <tt class="py-line"> <tt class="py-comment"># exit from second parent</tt> </tt>
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<a name="L46"></a><tt class="py-lineno"> 46</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
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<a name="L47"></a><tt class="py-lineno"> 47</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt class="py-name">OSError</tt><tt class="py-op">,</tt> <tt id="link-3" class="py-name"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-3', 'e', 'link-0');">e</a></tt><tt class="py-op">:</tt> </tt>
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<a name="L48"></a><tt class="py-lineno"> 48</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">write</tt><tt class="py-op">(</tt><tt class="py-string">"fork #2 failed: %d (%s)\n"</tt> <tt class="py-op">%</tt> <tt class="py-op">(</tt><tt id="link-4" class="py-name"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-4', 'e', 'link-0');">e</a></tt><tt class="py-op">.</tt><tt class="py-name">errno</tt><tt class="py-op">,</tt> <tt id="link-5" class="py-name"><a title="linspector.lib.core.logger.Logger.e" class="py-name" href="#" onclick="return doclink('link-5', 'e', 'link-0');">e</a></tt><tt class="py-op">.</tt><tt class="py-name">strerror</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L49"></a><tt class="py-lineno"> 49</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
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<a name="L50"></a><tt class="py-lineno"> 50</tt> <tt class="py-line"> </tt>
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<a name="L51"></a><tt class="py-lineno"> 51</tt> <tt class="py-line"> <tt class="py-comment"># redirect standard file descriptors</tt> </tt>
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<a name="L52"></a><tt class="py-lineno"> 52</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stdout</tt><tt class="py-op">.</tt><tt class="py-name">flush</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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<a name="L53"></a><tt class="py-lineno"> 53</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">flush</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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<a name="L54"></a><tt class="py-lineno"> 54</tt> <tt class="py-line"> <tt class="py-name">si</tt> <tt class="py-op">=</tt> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stdin</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
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<a name="L55"></a><tt class="py-lineno"> 55</tt> <tt class="py-line"> <tt class="py-name">so</tt> <tt class="py-op">=</tt> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stdout</tt><tt class="py-op">,</tt> <tt class="py-string">'a+'</tt><tt class="py-op">)</tt> </tt>
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<a name="L56"></a><tt class="py-lineno"> 56</tt> <tt class="py-line"> <tt class="py-name">se</tt> <tt class="py-op">=</tt> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">,</tt> <tt class="py-string">'a+'</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
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<a name="L57"></a><tt class="py-lineno"> 57</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">dup2</tt><tt class="py-op">(</tt><tt class="py-name">si</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stdin</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L58"></a><tt class="py-lineno"> 58</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">dup2</tt><tt class="py-op">(</tt><tt class="py-name">so</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stdout</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L59"></a><tt class="py-lineno"> 59</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">dup2</tt><tt class="py-op">(</tt><tt class="py-name">se</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L60"></a><tt class="py-lineno"> 60</tt> <tt class="py-line"> </tt>
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<a name="L61"></a><tt class="py-lineno"> 61</tt> <tt class="py-line"> <tt class="py-comment"># write pidfile</tt> </tt>
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<a name="L62"></a><tt class="py-lineno"> 62</tt> <tt class="py-line"> <tt class="py-name">atexit</tt><tt class="py-op">.</tt><tt class="py-name">register</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-6" class="py-name" targets="Method linspector.lib.core.daemon.Daemon.delpid()=linspector.lib.core.daemon.Daemon-class.html#delpid"><a title="linspector.lib.core.daemon.Daemon.delpid" class="py-name" href="#" onclick="return doclink('link-6', 'delpid', 'link-6');">delpid</a></tt><tt class="py-op">)</tt> </tt>
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<a name="L63"></a><tt class="py-lineno"> 63</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">getpid</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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<a name="L64"></a><tt class="py-lineno"> 64</tt> <tt class="py-line"> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">,</tt> <tt class="py-string">'w+'</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">write</tt><tt class="py-op">(</tt><tt class="py-string">"%s\n"</tt> <tt class="py-op">%</tt> <tt class="py-name">pid</tt><tt class="py-op">)</tt> </tt>
|
|
</div><a name="L65"></a><tt class="py-lineno"> 65</tt> <tt class="py-line"> </tt>
|
|
<a name="Daemon.delpid"></a><div id="Daemon.delpid-def"><a name="L66"></a><tt class="py-lineno"> 66</tt> <a class="py-toggle" href="#" id="Daemon.delpid-toggle" onclick="return toggle('Daemon.delpid');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#delpid">delpid</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Daemon.delpid-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.delpid-expanded"><a name="L67"></a><tt class="py-lineno"> 67</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">remove</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">)</tt> </tt>
|
|
</div><a name="L68"></a><tt class="py-lineno"> 68</tt> <tt class="py-line"> </tt>
|
|
<a name="Daemon.start"></a><div id="Daemon.start-def"><a name="L69"></a><tt class="py-lineno"> 69</tt> <a class="py-toggle" href="#" id="Daemon.start-toggle" onclick="return toggle('Daemon.start');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#start">start</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Daemon.start-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.start-expanded"><a name="L70"></a><tt class="py-lineno"> 70</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
|
|
<a name="L71"></a><tt class="py-lineno"> 71</tt> <tt class="py-line"><tt class="py-docstring"> Start the daemon</tt> </tt>
|
|
<a name="L72"></a><tt class="py-lineno"> 72</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
|
|
<a name="L73"></a><tt class="py-lineno"> 73</tt> <tt class="py-line"> <tt class="py-comment"># Check for a pidfile to see if the daemon already runs</tt> </tt>
|
|
<a name="L74"></a><tt class="py-lineno"> 74</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
|
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<a name="L75"></a><tt class="py-lineno"> 75</tt> <tt class="py-line"> <tt class="py-name">pf</tt> <tt class="py-op">=</tt> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L76"></a><tt class="py-lineno"> 76</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">pf</tt><tt class="py-op">.</tt><tt class="py-name">read</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">strip</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L77"></a><tt class="py-lineno"> 77</tt> <tt class="py-line"> <tt class="py-name">pf</tt><tt class="py-op">.</tt><tt id="link-7" class="py-name" targets="Method linspector.lib.core.logger.Logger.close()=linspector.lib.core.logger.Logger-class.html#close"><a title="linspector.lib.core.logger.Logger.close" class="py-name" href="#" onclick="return doclink('link-7', 'close', 'link-7');">close</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L78"></a><tt class="py-lineno"> 78</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt class="py-name">IOError</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L79"></a><tt class="py-lineno"> 79</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
|
|
<a name="L80"></a><tt class="py-lineno"> 80</tt> <tt class="py-line"> </tt>
|
|
<a name="L81"></a><tt class="py-lineno"> 81</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">pid</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L82"></a><tt class="py-lineno"> 82</tt> <tt class="py-line"> <tt class="py-name">message</tt> <tt class="py-op">=</tt> <tt class="py-string">"pidfile %s already exist. daemon already running?\n"</tt> </tt>
|
|
<a name="L83"></a><tt class="py-lineno"> 83</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">write</tt><tt class="py-op">(</tt><tt class="py-name">message</tt> <tt class="py-op">%</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L84"></a><tt class="py-lineno"> 84</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L85"></a><tt class="py-lineno"> 85</tt> <tt class="py-line"> </tt>
|
|
<a name="L86"></a><tt class="py-lineno"> 86</tt> <tt class="py-line"> <tt class="py-comment"># Start the daemon</tt> </tt>
|
|
<a name="L87"></a><tt class="py-lineno"> 87</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-8" class="py-name" targets="Method linspector.lib.core.daemon.Daemon.daemonize()=linspector.lib.core.daemon.Daemon-class.html#daemonize"><a title="linspector.lib.core.daemon.Daemon.daemonize" class="py-name" href="#" onclick="return doclink('link-8', 'daemonize', 'link-8');">daemonize</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L88"></a><tt class="py-lineno"> 88</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-9" class="py-name" targets="Method linspector.lib.core.daemon.Daemon.run()=linspector.lib.core.daemon.Daemon-class.html#run,Method linspector.lib.core.linspector_daemon.LinspectorDaemon.run()=linspector.lib.core.linspector_daemon.LinspectorDaemon-class.html#run"><a title="linspector.lib.core.daemon.Daemon.run
|
|
linspector.lib.core.linspector_daemon.LinspectorDaemon.run" class="py-name" href="#" onclick="return doclink('link-9', 'run', 'link-9');">run</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
</div><a name="L89"></a><tt class="py-lineno"> 89</tt> <tt class="py-line"> </tt>
|
|
<a name="Daemon.stop"></a><div id="Daemon.stop-def"><a name="L90"></a><tt class="py-lineno"> 90</tt> <a class="py-toggle" href="#" id="Daemon.stop-toggle" onclick="return toggle('Daemon.stop');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#stop">stop</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
|
|
</div><div id="Daemon.stop-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.stop-expanded"><a name="L91"></a><tt class="py-lineno"> 91</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
|
|
<a name="L92"></a><tt class="py-lineno"> 92</tt> <tt class="py-line"><tt class="py-docstring"> Stop the daemon</tt> </tt>
|
|
<a name="L93"></a><tt class="py-lineno"> 93</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
|
|
<a name="L94"></a><tt class="py-lineno"> 94</tt> <tt class="py-line"> <tt class="py-comment"># Get the pid from the pidfile</tt> </tt>
|
|
<a name="L95"></a><tt class="py-lineno"> 95</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L96"></a><tt class="py-lineno"> 96</tt> <tt class="py-line"> <tt class="py-name">pf</tt> <tt class="py-op">=</tt> <tt class="py-name">file</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L97"></a><tt class="py-lineno"> 97</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">pf</tt><tt class="py-op">.</tt><tt class="py-name">read</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">strip</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L98"></a><tt class="py-lineno"> 98</tt> <tt class="py-line"> <tt class="py-name">pf</tt><tt class="py-op">.</tt><tt id="link-10" class="py-name"><a title="linspector.lib.core.logger.Logger.close" class="py-name" href="#" onclick="return doclink('link-10', 'close', 'link-7');">close</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L99"></a><tt class="py-lineno"> 99</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt class="py-name">IOError</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L100"></a><tt class="py-lineno">100</tt> <tt class="py-line"> <tt class="py-name">pid</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
|
|
<a name="L101"></a><tt class="py-lineno">101</tt> <tt class="py-line"> </tt>
|
|
<a name="L102"></a><tt class="py-lineno">102</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">pid</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L103"></a><tt class="py-lineno">103</tt> <tt class="py-line"> <tt class="py-name">message</tt> <tt class="py-op">=</tt> <tt class="py-string">"pidfile %s does not exist. daemon not running?\n"</tt> </tt>
|
|
<a name="L104"></a><tt class="py-lineno">104</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">write</tt><tt class="py-op">(</tt><tt class="py-name">message</tt> <tt class="py-op">%</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L105"></a><tt class="py-lineno">105</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-comment"># not an error in a restart</tt> </tt>
|
|
<a name="L106"></a><tt class="py-lineno">106</tt> <tt class="py-line"> </tt>
|
|
<a name="L107"></a><tt class="py-lineno">107</tt> <tt class="py-line"> <tt class="py-comment"># Try killing the daemon process</tt> </tt>
|
|
<a name="L108"></a><tt class="py-lineno">108</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L109"></a><tt class="py-lineno">109</tt> <tt class="py-line"> <tt class="py-keyword">while</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L110"></a><tt class="py-lineno">110</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">kill</tt><tt class="py-op">(</tt><tt class="py-name">pid</tt><tt class="py-op">,</tt> <tt class="py-name">SIGTERM</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L111"></a><tt class="py-lineno">111</tt> <tt class="py-line"> <tt class="py-name">time</tt><tt class="py-op">.</tt><tt class="py-name">sleep</tt><tt class="py-op">(</tt><tt class="py-number">0.1</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L112"></a><tt class="py-lineno">112</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt class="py-name">OSError</tt><tt class="py-op">,</tt> <tt class="py-name">err</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L113"></a><tt class="py-lineno">113</tt> <tt class="py-line"> <tt class="py-name">err</tt> <tt class="py-op">=</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">err</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L114"></a><tt class="py-lineno">114</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">err</tt><tt class="py-op">.</tt><tt class="py-name">find</tt><tt class="py-op">(</tt><tt class="py-string">"No such process"</tt><tt class="py-op">)</tt> <tt class="py-op">></tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L115"></a><tt class="py-lineno">115</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt class="py-name">exists</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L116"></a><tt class="py-lineno">116</tt> <tt class="py-line"> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">remove</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pidfile</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L117"></a><tt class="py-lineno">117</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
|
|
<a name="L118"></a><tt class="py-lineno">118</tt> <tt class="py-line"> <tt class="py-keyword">print</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">err</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L119"></a><tt class="py-lineno">119</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
|
|
</div><a name="L120"></a><tt class="py-lineno">120</tt> <tt class="py-line"> </tt>
|
|
<a name="Daemon.restart"></a><div id="Daemon.restart-def"><a name="L121"></a><tt class="py-lineno">121</tt> <a class="py-toggle" href="#" id="Daemon.restart-toggle" onclick="return toggle('Daemon.restart');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#restart">restart</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
|
|
</div><div id="Daemon.restart-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.restart-expanded"><a name="L122"></a><tt class="py-lineno">122</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
|
|
<a name="L123"></a><tt class="py-lineno">123</tt> <tt class="py-line"><tt class="py-docstring"> Restart the daemon</tt> </tt>
|
|
<a name="L124"></a><tt class="py-lineno">124</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
|
|
<a name="L125"></a><tt class="py-lineno">125</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-11" class="py-name" targets="Method linspector.lib.core.daemon.Daemon.stop()=linspector.lib.core.daemon.Daemon-class.html#stop"><a title="linspector.lib.core.daemon.Daemon.stop" class="py-name" href="#" onclick="return doclink('link-11', 'stop', 'link-11');">stop</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
<a name="L126"></a><tt class="py-lineno">126</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-12" class="py-name" targets="Method linspector.lib.core.daemon.Daemon.start()=linspector.lib.core.daemon.Daemon-class.html#start"><a title="linspector.lib.core.daemon.Daemon.start" class="py-name" href="#" onclick="return doclink('link-12', 'start', 'link-12');">start</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
|
|
</div><a name="L127"></a><tt class="py-lineno">127</tt> <tt class="py-line"> </tt>
|
|
<a name="Daemon.run"></a><div id="Daemon.run-def"><a name="L128"></a><tt class="py-lineno">128</tt> <a class="py-toggle" href="#" id="Daemon.run-toggle" onclick="return toggle('Daemon.run');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="linspector.lib.core.daemon.Daemon-class.html#run">run</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
|
|
</div><div id="Daemon.run-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Daemon.run-expanded"><a name="L129"></a><tt class="py-lineno">129</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
|
|
<a name="L130"></a><tt class="py-lineno">130</tt> <tt class="py-line"><tt class="py-docstring"> You should override this method when you subclass Daemon.</tt> </tt>
|
|
<a name="L131"></a><tt class="py-lineno">131</tt> <tt class="py-line"><tt class="py-docstring"> It will be called after the process has been</tt> </tt>
|
|
<a name="L132"></a><tt class="py-lineno">132</tt> <tt class="py-line"><tt class="py-docstring"> daemonized by start() or restart().</tt> </tt>
|
|
<a name="L133"></a><tt class="py-lineno">133</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
|
|
</div></div><a name="L134"></a><tt class="py-lineno">134</tt> <tt class="py-line"> </tt><script type="text/javascript">
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