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freedavis/doc/build/html/_modules/config.html
2019-12-16 22:49:55 +01:00

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<h1>Source code for config</h1><div class="highlight"><pre>
<span></span><span class="ch">#!/usr/bin/python3</span>
<span class="sd">&#39;&#39;&#39;</span>
<span class="sd">Generic, system-wide variables and functions to be used in any / every module</span>
<span class="sd">Global variables are defined with _variable_name schema, to be quickly</span>
<span class="sd">identified in the project. </span>
<span class="sd">&#39;&#39;&#39;</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">influxdb</span>
<span class="n">SCRIPT_PATH</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">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="vm">__file__</span><span class="p">))</span>
<span class="n">_templates</span> <span class="o">=</span> <span class="s1">&#39;/templates/&#39;</span>
<span class="c1"># Functions</span>
<div class="viewcode-block" id="read_html"><a class="viewcode-back" href="../introduction.html#config.read_html">[docs]</a><span class="k">def</span> <span class="nf">read_html</span><span class="p">(</span><span class="n">filename</span><span class="p">,</span> <span class="n">_STATIC_DIR</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;Read a html file</span>
<span class="sd"> Reads a file from a selected static directory - needs to be set as static</span>
<span class="sd"> in the cherrypy (chttpd.py).</span>
<span class="sd"> Args:</span>
<span class="sd"> ``filename`` *str()*, plain filename, without any path specification,</span>
<span class="sd"> without extension </span>
<span class="sd"> ``_STATIC_DIR`` *str()*, path relative to the project root,</span>
<span class="sd"> where chttpd.py resides</span>
<span class="sd"> Returns:</span>
<span class="sd"> *str()*, parsed html code from the read file, or a HTML</span>
<span class="sd"> formatted error if file cannot be read for any reason</span>
<span class="sd"> Exceptions:</span>
<span class="sd"> On file read fail, string with Exception text is returned</span>
<span class="sd"> </span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="n">read_path</span> <span class="o">=</span> <span class="n">SCRIPT_PATH</span> <span class="o">+</span> <span class="n">_STATIC_DIR</span> <span class="o">+</span> <span class="n">filename</span> <span class="o">+</span> <span class="s1">&#39;.html&#39;</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">read_path</span><span class="p">,</span> <span class="s1">&#39;r&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">handle</span><span class="p">:</span>
<span class="k">return</span> <span class="n">handle</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="k">return</span> <span class="s2">&quot;&quot;&quot;&lt;div&gt;ERROR: </span><span class="si">{}</span><span class="s2">!&lt;/div&gt;&lt;br&gt;</span><span class="si">{}</span><span class="s2">&quot;&quot;&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">read_path</span><span class="p">)</span></div>
<span class="c1">#Classes</span>
<div class="viewcode-block" id="serverConfiguration"><a class="viewcode-back" href="../introduction.html#config.serverConfiguration">[docs]</a><span class="k">class</span> <span class="nc">serverConfiguration</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;Sets up Conf with appropriate values</span>
<span class="sd"> Creates an object that holds the configuration to the whole web server,</span>
<span class="sd"> is available throughout the project. This separates the .ini style config</span>
<span class="sd"> and the config.py script, that uses additional logic.</span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;Init Conf values</span>
<span class="sd"> Sets up all values in config.Conf.val[&#39;option&#39;]=value</span>
<span class="sd"> Args:</span>
<span class="sd"> N/A</span>
<span class="sd"> Returns:</span>
<span class="sd"> N/A</span>
<span class="sd"> Sets:</span>
<span class="sd"> dict(self.val[option]): Set via read_config() method,</span>
<span class="sd"> does some additional calculations and parsing.</span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">read_config</span><span class="p">(</span><span class="s1">&#39;plutonium&#39;</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;INFO: Config read success&quot;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_server_uri&#39;</span><span class="p">]</span> <span class="o">=</span> \
<span class="s2">&quot;</span><span class="si">{}</span><span class="s2">://</span><span class="si">{}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_server_protocol&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_server_name&#39;</span><span class="p">]</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_server_port&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_server_port&#39;</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">])</span>
<span class="k">else</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: In reading config&quot;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">influx_connectors</span><span class="p">()</span>
<div class="viewcode-block" id="serverConfiguration.influx_connectors"><a class="viewcode-back" href="../introduction.html#config.serverConfiguration.influx_connectors">[docs]</a> <span class="k">def</span> <span class="nf">influx_connectors</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;Set up client objects for InfluxDB</span>
<span class="sd"> All DB connector objects in one place. Callable from other modules</span>
<span class="sd"> Args:</span>
<span class="sd"> None</span>
<span class="sd"> Sets:</span>
<span class="sd"> ``self.influx_weather_client``,</span>
<span class="sd"> ``self.influx_voltage_client``,</span>
<span class="sd"> ``self.influx_iot_client``,</span>
<span class="sd"> ``self.influx_status_client``: Influx client connector objects</span>
<span class="sd"> </span>
<span class="sd"> Returns:</span>
<span class="sd"> N/A</span>
<span class="sd"> </span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">influx_weather_client</span> <span class="o">=</span> <span class="n">influxdb</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">InfluxDBClient</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_host&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_user&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_pwd&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_weather_db&#39;</span><span class="p">]</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">influx_voltage_client</span> <span class="o">=</span> <span class="n">influxdb</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">InfluxDBClient</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_host&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_user&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_pwd&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_voltage_db&#39;</span><span class="p">]</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">influx_iot_client</span> <span class="o">=</span> <span class="n">influxdb</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">InfluxDBClient</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_host&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_user&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_pwd&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_IoT_db&#39;</span><span class="p">]</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">influx_status_client</span> <span class="o">=</span> <span class="n">influxdb</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">InfluxDBClient</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_host&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_port&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_user&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_pwd&#39;</span><span class="p">],</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="p">[</span><span class="s1">&#39;_influx_status_db&#39;</span><span class="p">]</span>
<span class="p">)</span></div>
<div class="viewcode-block" id="serverConfiguration.read_config"><a class="viewcode-back" href="../introduction.html#config.serverConfiguration.read_config">[docs]</a> <span class="k">def</span> <span class="nf">read_config</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">conf_filename</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;Reads configuration file</span>
<span class="sd"> </span>
<span class="sd"> Read and parse the configuration options into a dictionary</span>
<span class="sd"> Why not using configparser? No idea, subject to change.</span>
<span class="sd"> This method is called on class init. </span>
<span class="sd"> </span>
<span class="sd"> Args:</span>
<span class="sd"> ``conf_filename``, *str()* file name without the .ini extension,</span>
<span class="sd"> residing in ./config directory</span>
<span class="sd"> </span>
<span class="sd"> Returns:</span>
<span class="sd"> *dict()*, On success</span>
<span class="sd"> </span>
<span class="sd"> *bool(False)*, On failure</span>
<span class="sd"> Sets:</span>
<span class="sd"> ``self.dict()`` of name_value_pairs read from the config file</span>
<span class="sd"> </span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="n">read_path</span> <span class="o">=</span> <span class="n">SCRIPT_PATH</span> <span class="o">+</span> <span class="s1">&#39;/config/&#39;</span> <span class="o">+</span> <span class="n">conf_filename</span> <span class="o">+</span> <span class="s1">&#39;.ini&#39;</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">read_path</span><span class="p">,</span> <span class="s1">&#39;r&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">conf_file</span><span class="p">:</span>
<span class="n">config_list</span> <span class="o">=</span> <span class="n">conf_file</span><span class="o">.</span><span class="n">readlines</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">OSError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: </span><span class="si">{}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">e</span><span class="p">))</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">config_list</span><span class="p">:</span>
<span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> <span class="o">!=</span> <span class="s1">&#39;&#39;</span><span class="p">:</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">line</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="s2">&quot;=&quot;</span><span class="p">)</span>
<span class="n">option</span> <span class="o">=</span> <span class="n">line</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">strip</span><span class="p">(</span><span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">line</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">strip</span><span class="p">(</span><span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
<span class="k">except</span><span class="p">:</span>
<span class="n">exit</span><span class="p">(</span><span class="s2">&quot;WARNING: Wrong format of config option&quot;</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="n">option</span><span class="p">:</span><span class="n">value</span><span class="p">})</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">pass</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">val</span> </div></div>
<span class="n">Conf</span> <span class="o">=</span> <span class="n">serverConfiguration</span><span class="p">()</span>
<span class="c1">#_server_protocol = &quot;https&quot;</span>
<span class="c1">#_server_name = &quot;bastart.spoton.cz&quot;</span>
<span class="c1">#_server_uri = &quot;{}://{}&quot;.format(_server_protocol, _server_name)</span>
<span class="c1">#_server_port = 443</span>
<span class="c1">#_server_bind_ip = &#39;0.0.0.0&#39;</span>
<span class="c1">#</span>
<span class="c1">#_influx_host = &#39;localhost&#39;</span>
<span class="c1">#_influx_port = 8086</span>
<span class="c1">#_influx_user = &#39;pi&#39;</span>
<span class="c1">#_influx_pwd = &#39;&#39;</span>
<span class="c1">#_influx_weather_db = &#39;weather_v2&#39;</span>
<span class="c1">#_influx_status_db = &#39;status&#39;</span>
<span class="c1">#_influx_voltage_db = &#39;voltage&#39;</span>
<span class="c1">#_influx_IoT_db = &#39;weather_v2&#39;</span>
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