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craftbeerpi4-pione/docs/properties.html
manuel83 7923c76523 documentation updated
2019-01-05 23:27:29 +01:00

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<div class="section" id="properties">
<h1>Properties<a class="headerlink" href="#properties" title="Permalink to this headline"></a></h1>
<p>Properties can be use in all extensions.
During the startup the server scans all extension for variables of type Property.
Theses properties are exposed to the user for configuration during run time.
For example the user can set the GPIO number or the 1Wire Id.</p>
<p>Typical example how to use properties in an actor module.</p>
<div class="section" id="custom-actor">
<h2>Custom Actor<a class="headerlink" href="#custom-actor" title="Permalink to this headline"></a></h2>
<div class="literal-block-wrapper docutils container" id="init-py">
<div class="code-block-caption"><span class="caption-text">__init__.py</span><a class="headerlink" href="#init-py" title="Permalink to this code"></a></div>
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100</pre></div></td><td class="code"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">from</span> <span class="nn">unittest.mock</span> <span class="kn">import</span> <span class="n">MagicMock</span><span class="p">,</span> <span class="n">patch</span>
<span class="kn">from</span> <span class="nn">cbpi.api</span> <span class="kn">import</span> <span class="o">*</span>
<span class="n">logger</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="vm">__name__</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">RPi.GPIO</span> <span class="kn">as</span> <span class="nn">GPIO</span>
<span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span>
<span class="n">logger</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">&quot;Failed to load RPi.GPIO. Using Mock&quot;</span><span class="p">)</span>
<span class="n">MockRPi</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span>
<span class="n">modules</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">&quot;RPi&quot;</span><span class="p">:</span> <span class="n">MockRPi</span><span class="p">,</span>
<span class="s2">&quot;RPi.GPIO&quot;</span><span class="p">:</span> <span class="n">MockRPi</span><span class="o">.</span><span class="n">GPIO</span>
<span class="p">}</span>
<span class="n">patcher</span> <span class="o">=</span> <span class="n">patch</span><span class="o">.</span><span class="n">dict</span><span class="p">(</span><span class="s2">&quot;sys.modules&quot;</span><span class="p">,</span> <span class="n">modules</span><span class="p">)</span>
<span class="n">patcher</span><span class="o">.</span><span class="n">start</span><span class="p">()</span>
<span class="kn">import</span> <span class="nn">RPi.GPIO</span> <span class="kn">as</span> <span class="nn">GPIO</span>
<span class="k">class</span> <span class="nc">CustomActor</span><span class="p">(</span><span class="n">CBPiActor</span><span class="p">):</span>
<span class="c1"># Custom property which can be configured by the user</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="k">pass</span>
<span class="k">def</span> <span class="nf">on</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">power</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span>
<span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">&quot;ACTOR </span><span class="si">%s</span><span class="s2"> ON&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">True</span>
<span class="k">def</span> <span class="nf">off</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">&quot;ACTOR </span><span class="si">%s</span><span class="s2"> OFF &quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">False</span>
<span class="k">class</span> <span class="nc">GPIOActor</span><span class="p">(</span><span class="n">CBPiActor</span><span class="p">):</span>
<span class="c1"># Custom property which can be configured by the user</span>
<span class="n">gpio</span> <span class="o">=</span> <span class="n">Property</span><span class="o">.</span><span class="n">Select</span><span class="p">(</span><span class="s2">&quot;GPIO&quot;</span><span class="p">,</span> <span class="n">options</span><span class="o">=</span><span class="p">[</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">12</span><span class="p">,</span><span class="mi">13</span><span class="p">,</span><span class="mi">14</span><span class="p">,</span><span class="mi">15</span><span class="p">,</span><span class="mi">16</span><span class="p">,</span><span class="mi">17</span><span class="p">,</span><span class="mi">18</span><span class="p">,</span><span class="mi">19</span><span class="p">,</span><span class="mi">20</span><span class="p">,</span><span class="mi">21</span><span class="p">,</span><span class="mi">22</span><span class="p">,</span><span class="mi">23</span><span class="p">,</span><span class="mi">24</span><span class="p">,</span><span class="mi">25</span><span class="p">,</span><span class="mi">26</span><span class="p">,</span><span class="mi">27</span><span class="p">],</span> <span class="n">description</span><span class="o">=</span><span class="s2">&quot;GPIO to which the actor is connected&quot;</span><span class="p">)</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="k">try</span><span class="p">:</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">setup</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="n">GPIO</span><span class="o">.</span><span class="n">OUT</span><span class="p">)</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">0</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">raise</span> <span class="n">CBPiException</span><span class="p">(</span><span class="s2">&quot;FAILD TO INIT ACTOR&quot;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">on</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">power</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span>
<span class="k">print</span><span class="p">(</span><span class="s2">&quot;GPIO ON </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">))</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">1</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">True</span>
<span class="k">def</span> <span class="nf">off</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">print</span><span class="p">(</span><span class="s2">&quot;GPIO OFF </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">))</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">False</span>
<span class="k">class</span> <span class="nc">GPIORelayBoardActor</span><span class="p">(</span><span class="n">CBPiActor</span><span class="p">):</span>
<span class="c1"># Custom property which can be configured by the user</span>
<span class="n">gpio</span> <span class="o">=</span> <span class="n">Property</span><span class="o">.</span><span class="n">Select</span><span class="p">(</span><span class="s2">&quot;GPIO&quot;</span><span class="p">,</span> <span class="n">options</span><span class="o">=</span><span class="p">[</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">12</span><span class="p">,</span><span class="mi">13</span><span class="p">,</span><span class="mi">14</span><span class="p">,</span><span class="mi">15</span><span class="p">,</span><span class="mi">16</span><span class="p">,</span><span class="mi">17</span><span class="p">,</span><span class="mi">18</span><span class="p">,</span><span class="mi">19</span><span class="p">,</span><span class="mi">20</span><span class="p">,</span><span class="mi">21</span><span class="p">,</span><span class="mi">22</span><span class="p">,</span><span class="mi">23</span><span class="p">,</span><span class="mi">24</span><span class="p">,</span><span class="mi">25</span><span class="p">,</span><span class="mi">26</span><span class="p">,</span><span class="mi">27</span><span class="p">],</span> <span class="n">description</span><span class="o">=</span><span class="s2">&quot;GPIO to which the actor is connected&quot;</span><span class="p">)</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="k">try</span><span class="p">:</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">setup</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="n">GPIO</span><span class="o">.</span><span class="n">OUT</span><span class="p">)</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">1</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">raise</span> <span class="n">CBPiException</span><span class="p">(</span><span class="s2">&quot;FAILD TO INIT ACTOR&quot;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">on</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">power</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span>
<span class="k">print</span><span class="p">(</span><span class="s2">&quot;GPIO ON </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">))</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">True</span>
<span class="k">def</span> <span class="nf">off</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">print</span><span class="p">(</span><span class="s2">&quot;GPIO OFF </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">))</span>
<span class="n">GPIO</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gpio</span><span class="p">),</span> <span class="mi">1</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="bp">False</span>
<span class="k">def</span> <span class="nf">setup</span><span class="p">(</span><span class="n">cbpi</span><span class="p">):</span>
<span class="sd">&#39;&#39;&#39;</span>
<span class="sd"> This method is called by the server during startup </span>
<span class="sd"> Here you need to register your plugins at the server</span>
<span class="sd"> </span>
<span class="sd"> :param cbpi: the cbpi core </span>
<span class="sd"> :return: </span>
<span class="sd"> &#39;&#39;&#39;</span>
<span class="n">cbpi</span><span class="o">.</span><span class="n">plugin</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="s2">&quot;CustomActor&quot;</span><span class="p">,</span> <span class="n">CustomActor</span><span class="p">)</span>
</pre></div>
</td></tr></table></div>
</div>
<dl class="class">
<dt id="cbpi.api.Property">
<em class="property">class </em><code class="descclassname">cbpi.api.</code><code class="descname">Property</code><a class="headerlink" href="#cbpi.api.Property" title="Permalink to this definition"></a></dt>
<dd><dl class="class">
<dt id="cbpi.api.Property.Actor">
<em class="property">class </em><code class="descname">Actor</code><span class="sig-paren">(</span><em>label</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Actor" title="Permalink to this definition"></a></dt>
<dd><p>The user select an actor which is available in the system. The value of this variable will be the actor id</p>
</dd></dl>
<dl class="class">
<dt id="cbpi.api.Property.Kettle">
<em class="property">class </em><code class="descname">Kettle</code><span class="sig-paren">(</span><em>label</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Kettle" title="Permalink to this definition"></a></dt>
<dd><p>The user select a kettle which is available in the system. The value of this variable will be the kettle id</p>
</dd></dl>
<dl class="class">
<dt id="cbpi.api.Property.Number">
<em class="property">class </em><code class="descname">Number</code><span class="sig-paren">(</span><em>label</em>, <em>configurable=False</em>, <em>default_value=None</em>, <em>unit=''</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Number" title="Permalink to this definition"></a></dt>
<dd><p>The user can set a number value</p>
</dd></dl>
<dl class="class">
<dt id="cbpi.api.Property.Select">
<em class="property">class </em><code class="descname">Select</code><span class="sig-paren">(</span><em>label</em>, <em>options</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Select" title="Permalink to this definition"></a></dt>
<dd><p>Select Property. The user can select value from list set as options parameter</p>
</dd></dl>
<dl class="class">
<dt id="cbpi.api.Property.Sensor">
<em class="property">class </em><code class="descname">Sensor</code><span class="sig-paren">(</span><em>label</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Sensor" title="Permalink to this definition"></a></dt>
<dd><p>The user select a sensor which is available in the system. The value of this variable will be the sensor id</p>
</dd></dl>
<dl class="class">
<dt id="cbpi.api.Property.Text">
<em class="property">class </em><code class="descname">Text</code><span class="sig-paren">(</span><em>label</em>, <em>configurable=False</em>, <em>default_value=''</em>, <em>description=''</em><span class="sig-paren">)</span><a class="headerlink" href="#cbpi.api.Property.Text" title="Permalink to this definition"></a></dt>
<dd><p>The user can set a text value</p>
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