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  6. <title>
  7.   Class: HWSSettings
  8.   
  9.     &mdash; Documentation by YARD 0.8.7.6
  10.   
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  33.   
  34.     <a href="_index.html">Index (H)</a> &raquo;
  35.     
  36.     
  37.     <span class="title">HWSSettings</span>
  38.   
  39.  
  40.   <div class="noframes"><span class="title">(</span><a href="." target="_top">no frames</a><span class="title">)</span></div>
  41. </div>
  42.  
  43.       <div id="search">
  44.   
  45.     <a class="full_list_link" id="class_list_link"
  46.         href="class_list.html">
  47.       Class List
  48.     </a>
  49.   
  50.     <a class="full_list_link" id="method_list_link"
  51.         href="method_list.html">
  52.       Method List
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  57.       File List
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  63.  
  64.     <iframe id="search_frame"></iframe>
  65.  
  66.     <div id="content"><h1>Class: HWSSettings
  67.   
  68.   
  69.   
  70. </h1>
  71.  
  72. <dl class="box">
  73.   
  74.     <dt class="r1">Inherits:</dt>
  75.     <dd class="r1">
  76.       <span class="inheritName">Object</span>
  77.       
  78.         <ul class="fullTree">
  79.           <li>Object</li>
  80.           
  81.             <li class="next">HWSSettings</li>
  82.           
  83.         </ul>
  84.         <a href="#" class="inheritanceTree">show all</a>
  85.       
  86.       </dd>
  87.     
  88.   
  89.   
  90.     
  91.   
  92.     
  93.   
  94.   
  95.   
  96.     <dt class="r2 last">Defined in:</dt>
  97.     <dd class="r2 last">lib/hws_settings.rb</dd>
  98.   
  99. </dl>
  100. <div class="clear"></div>
  101.  
  102. <h2>Overview</h2><div class="docstring">
  103.   <div class="discussion">
  104.     
  105. <p>A Rack middleware application that creates a single configuration for Helix
  106. Web Services.</p>
  107.  
  108. <p>Most web services are modular Sinatra applications, which does come with
  109. it&#39;s own settings mechanism. We should try to avoid those settings in
  110. most cases. Perhaps only if those settings are only relevant to the logic
  111. directly within the Sinatra app.</p>
  112.  
  113. <p>Many other settings, like the port setting of the associated Helix
  114. Versioning Engine, should be exposed and overridable by the client
  115. application. These settings should be defined here.</p>
  116.  
  117. <p>This class provides middleware that will inject an
  118. <code>hws_settings</code> object into each request. This
  119. <code>hws_settings</code> object is seeded by values declared on this
  120. class. When the system starts, our system config file is read in, and
  121. default system values are overridden. On any request, these settings can be
  122. overridden by the user.</p>
  123.  
  124. <p>Additionally, there are “system” settings that are only overridable from
  125. the system config file. Client classes should reference this class
  126. directly: HWSSettings.system.</p>
  127.  
  128. <h2 id="label-Naming+Conventions">Naming Conventions</h2>
  129.  
  130. <p>Use uppercase letters, numbers, or underscores only.</p>
  131.  
  132. <h2 id="label-HTTP+Header+Override+Syntax">HTTP Header Override Syntax</h2>
  133.  
  134. <p>We allow per-request overrides of settings via HTTP headers.</p>
  135.  
  136. <p>The key format of the custom setting is:</p>
  137.  
  138. <p><code>X-PERFORCE-HELIX_WEB_SERVICES-{key}</code></p>
  139.  
  140. <p>For example:</p>
  141.  
  142. <pre class="code ruby"><code class="ruby">X-PERFORCE-HELIX_WEB_SERVICES-P4HOST: perforce.mycompany.com
  143. X-PERFORCE-HELIX_WEB_SERVICES-P4CHARSET: auto</code></pre>
  144.  
  145. <p>Please note that headers will be converted by Rack to all uppercase, hence
  146. our naming conventions.</p>
  147.  
  148. <h2 id="label-System+Config+File">System Config File</h2>
  149.  
  150. <p>The system configuration is stored in the
  151. <code>/etc/perforce/helix_web_services.conf</code> file. This is a YAML
  152. file, and we override any locally defined variables with values found in
  153. this file. ()If you specify a value in this file we do not locally define,
  154. we ignore it.)</p>
  155.  
  156. <p>Example values in /etc/perforce/helix_web_services.conf:</p>
  157.  
  158. <pre class="code ruby"><code class="ruby">P4HOST: &#39;perforce.mycompany.com&#39;
  159. P4PORT: &#39;9991&#39;</code></pre>
  160.  
  161.  
  162.   </div>
  163. </div>
  164. <div class="tags">
  165.   
  166.  
  167. </div>
  168.   <h2>Constant Summary</h2>
  169.   
  170.     <dl class="constants">
  171.       
  172.         <dt id="SYSTEM_CONFIG_PATH-constant" class="">SYSTEM_CONFIG_PATH =
  173.           
  174.         </dt>
  175.         <dd><pre class="code"><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>/etc/perforce/helix_web_services.conf</span><span class='tstring_end'>&#39;</span></span></pre></dd>
  176.       
  177.     </dl>
  178.   
  179.  
  180.  
  181.  
  182.  
  183.  
  184.  
  185.  
  186.   
  187.     <h2>
  188.       Class Method Summary
  189.       <small>(<a href="#" class="summary_toggle">collapse</a>)</small>
  190.     </h2>
  191.  
  192.     <ul class="summary">
  193.       
  194.         <li class="public ">
  195.   <span class="summary_signature">
  196.     
  197.       <a href="#overrides-class_method" title="overrides (class method)">+ (Object) <strong>overrides</strong> </a>
  198.     
  199.  
  200.     
  201.   </span>
  202.   
  203.   
  204.   
  205.   
  206.   
  207.   
  208.   
  209.  
  210.   
  211.     <span class="summary_desc"><div class='inline'>
  212. <p>Return the system overrides in our system configuration file.</p>
  213. </div></span>
  214.   
  215. </li>
  216.  
  217.       
  218.         <li class="public ">
  219.   <span class="summary_signature">
  220.     
  221.       <a href="#settings-class_method" title="settings (class method)">+ (Object) <strong>settings</strong> </a>
  222.     
  223.  
  224.     
  225.   </span>
  226.   
  227.   
  228.   
  229.   
  230.   
  231.   
  232.   
  233.  
  234.   
  235.     <span class="summary_desc"><div class='inline'>
  236. <p>Returns baseline settings with system overrides applied.</p>
  237. </div></span>
  238.   
  239. </li>
  240.  
  241.       
  242.         <li class="public ">
  243.   <span class="summary_signature">
  244.     
  245.       <a href="#settings_handle-class_method" title="settings_handle (class method)">+ (Object) <strong>settings_handle</strong> </a>
  246.     
  247.  
  248.     
  249.   </span>
  250.   
  251.   
  252.   
  253.   
  254.   
  255.   
  256.   
  257.  
  258.   
  259.     <span class="summary_desc"><div class='inline'>
  260. <p>You can tweak the default settings directly here in code.</p>
  261. </div></span>
  262.   
  263. </li>
  264.  
  265.       
  266.         <li class="public ">
  267.   <span class="summary_signature">
  268.     
  269.       <a href="#system-class_method" title="system (class method)">+ (Object) <strong>system</strong> </a>
  270.     
  271.  
  272.     
  273.   </span>
  274.   
  275.   
  276.   
  277.   
  278.   
  279.   
  280.   
  281.  
  282.   
  283.     <span class="summary_desc"><div class='inline'>
  284. <p>Returns our system settings overridden by local configuration in overrides.</p>
  285. </div></span>
  286.   
  287. </li>
  288.  
  289.       
  290.         <li class="public ">
  291.   <span class="summary_signature">
  292.     
  293.       <a href="#system_handle-class_method" title="system_handle (class method)">+ (Object) <strong>system_handle</strong> </a>
  294.     
  295.  
  296.     
  297.   </span>
  298.   
  299.   
  300.   
  301.   
  302.   
  303.   
  304.   
  305.  
  306.   
  307.     <span class="summary_desc"><div class='inline'>
  308. <p>In case your code wants to edit the system classes directly.</p>
  309. </div></span>
  310.   
  311. </li>
  312.  
  313.       
  314.     </ul>
  315.   
  316.     <h2>
  317.       Instance Method Summary
  318.       <small>(<a href="#" class="summary_toggle">collapse</a>)</small>
  319.     </h2>
  320.  
  321.     <ul class="summary">
  322.       
  323.         <li class="public ">
  324.   <span class="summary_signature">
  325.     
  326.       <a href="#call-instance_method" title="#call (instance method)">- (Object) <strong>call</strong>(env) </a>
  327.     
  328.  
  329.     
  330.   </span>
  331.   
  332.   
  333.   
  334.   
  335.   
  336.   
  337.   
  338.  
  339.   
  340.     <span class="summary_desc"><div class='inline'></div></span>
  341.   
  342. </li>
  343.  
  344.       
  345.         <li class="public ">
  346.   <span class="summary_signature">
  347.     
  348.       <a href="#initialize-instance_method" title="#initialize (instance method)">- (HWSSettings) <strong>initialize</strong>(app) </a>
  349.     
  350.  
  351.     
  352.   </span>
  353.   
  354.   
  355.     <span class="note title constructor">constructor</span>
  356.   
  357.   
  358.   
  359.   
  360.   
  361.   
  362.  
  363.   
  364.     <span class="summary_desc"><div class='inline'>
  365. <p>A new instance of HWSSettings.</p>
  366. </div></span>
  367.   
  368. </li>
  369.  
  370.       
  371.     </ul>
  372.   
  373.  
  374. <div id="constructor_details" class="method_details_list">
  375.   <h2>Constructor Details</h2>
  376.   
  377.     <div class="method_details first">
  378.   <h3 class="signature first" id="initialize-instance_method">
  379.   
  380.     - (<tt><span class='object_link'><a href="" title="HWSSettings (class)">HWSSettings</a></span></tt>) <strong>initialize</strong>(app) 
  381.   
  382.  
  383.   
  384.  
  385.   
  386. </h3><div class="docstring">
  387.   <div class="discussion">
  388.     
  389. <p>Returns a new instance of HWSSettings</p>
  390.  
  391.  
  392.   </div>
  393. </div>
  394. <div class="tags">
  395.   
  396.  
  397. </div><table class="source_code">
  398.   <tr>
  399.     <td>
  400.       <pre class="lines">
  401.  
  402.  
  403. 158
  404. 159
  405. 160</pre>
  406.     </td>
  407.     <td>
  408.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 158</span>
  409.  
  410. <span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span><span class='lparen'>(</span><span class='id identifier rubyid_app'>app</span><span class='rparen'>)</span>
  411.   <span class='ivar'>@app</span> <span class='op'>=</span> <span class='id identifier rubyid_app'>app</span>
  412. <span class='kw'>end</span></pre>
  413.     </td>
  414.   </tr>
  415. </table>
  416. </div>
  417.   
  418. </div>
  419.  
  420.  
  421.   <div id="class_method_details" class="method_details_list">
  422.     <h2>Class Method Details</h2>
  423.  
  424.     
  425.       <div class="method_details first">
  426.   <h3 class="signature first" id="overrides-class_method">
  427.   
  428.     + (<tt>Object</tt>) <strong>overrides</strong> 
  429.   
  430.  
  431.   
  432.  
  433.   
  434. </h3><div class="docstring">
  435.   <div class="discussion">
  436.     
  437. <p>Return the system overrides in our system configuration file.</p>
  438.  
  439.  
  440.   </div>
  441. </div>
  442. <div class="tags">
  443.   
  444.  
  445. </div><table class="source_code">
  446.   <tr>
  447.     <td>
  448.       <pre class="lines">
  449.  
  450.  
  451. 145
  452. 146
  453. 147</pre>
  454.     </td>
  455.     <td>
  456.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 145</span>
  457.  
  458. <span class='kw'>def</span> <span class='id identifier rubyid_overrides'>overrides</span>
  459.   <span class='kw'>return</span> <span class='ivar'>@overrides</span> <span class='op'>||=</span> <span class='id identifier rubyid_init_overrides'>init_overrides</span>
  460. <span class='kw'>end</span></pre>
  461.     </td>
  462.   </tr>
  463. </table>
  464. </div>
  465.     
  466.       <div class="method_details ">
  467.   <h3 class="signature " id="settings-class_method">
  468.   
  469.     + (<tt>Object</tt>) <strong>settings</strong> 
  470.   
  471.  
  472.   
  473.  
  474.   
  475. </h3><div class="docstring">
  476.   <div class="discussion">
  477.     
  478. <p>Returns baseline settings with system overrides applied.</p>
  479.  
  480. <p>This is a copy of state. If you want to alter the default settings in code
  481. instead of via config files, use the <code>settings_handle</code></p>
  482.  
  483.  
  484.   </div>
  485. </div>
  486. <div class="tags">
  487.   
  488.  
  489. </div><table class="source_code">
  490.   <tr>
  491.     <td>
  492.       <pre class="lines">
  493.  
  494.  
  495. 107
  496. 108
  497. 109
  498. 110
  499. 111
  500. 112
  501. 113
  502. 114
  503. 115</pre>
  504.     </td>
  505.     <td>
  506.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 107</span>
  507.  
  508. <span class='kw'>def</span> <span class='id identifier rubyid_settings'>settings</span>
  509.   <span class='id identifier rubyid_s'>s</span> <span class='op'>=</span> <span class='const'>OpenStruct</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span><span class='lparen'>(</span><span class='ivar'>@settings</span><span class='rparen'>)</span>
  510.   <span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_each_pair'>each_pair</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_key'>key</span><span class='comma'>,</span> <span class='id identifier rubyid__'>_</span><span class='op'>|</span>
  511.     <span class='kw'>if</span> <span class='id identifier rubyid_overrides'>overrides</span><span class='period'>.</span><span class='id identifier rubyid_respond_to?'>respond_to?</span><span class='lparen'>(</span><span class='id identifier rubyid_key'>key</span><span class='rparen'>)</span>
  512.       <span class='id identifier rubyid_s'>s</span><span class='lbracket'>[</span><span class='id identifier rubyid_key'>key</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='id identifier rubyid_overrides'>overrides</span><span class='lbracket'>[</span><span class='id identifier rubyid_key'>key</span><span class='rbracket'>]</span>
  513.     <span class='kw'>end</span>
  514.   <span class='kw'>end</span>
  515.   <span class='id identifier rubyid_s'>s</span>
  516. <span class='kw'>end</span></pre>
  517.     </td>
  518.   </tr>
  519. </table>
  520. </div>
  521.     
  522.       <div class="method_details ">
  523.   <h3 class="signature " id="settings_handle-class_method">
  524.   
  525.     + (<tt>Object</tt>) <strong>settings_handle</strong> 
  526.   
  527.  
  528.   
  529.  
  530.   
  531. </h3><div class="docstring">
  532.   <div class="discussion">
  533.     
  534. <p>You can tweak the default settings directly here in code.</p>
  535.  
  536.  
  537.   </div>
  538. </div>
  539. <div class="tags">
  540.   
  541.  
  542. </div><table class="source_code">
  543.   <tr>
  544.     <td>
  545.       <pre class="lines">
  546.  
  547.  
  548. 118
  549. 119
  550. 120</pre>
  551.     </td>
  552.     <td>
  553.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 118</span>
  554.  
  555. <span class='kw'>def</span> <span class='id identifier rubyid_settings_handle'>settings_handle</span>
  556.   <span class='ivar'>@settings</span>
  557. <span class='kw'>end</span></pre>
  558.     </td>
  559.   </tr>
  560. </table>
  561. </div>
  562.     
  563.       <div class="method_details ">
  564.   <h3 class="signature " id="system-class_method">
  565.   
  566.     + (<tt>Object</tt>) <strong>system</strong> 
  567.   
  568.  
  569.   
  570.  
  571.   
  572. </h3><div class="docstring">
  573.   <div class="discussion">
  574.     
  575. <p>Returns our system settings overridden by local configuration in overrides.</p>
  576.  
  577. <p>This is a <em>copy</em> of the class system settings, suitable for editing
  578. and passing on.</p>
  579.  
  580. <p>See the official guide for declared options.</p>
  581.  
  582.  
  583.   </div>
  584. </div>
  585. <div class="tags">
  586.   
  587.  
  588. </div><table class="source_code">
  589.   <tr>
  590.     <td>
  591.       <pre class="lines">
  592.  
  593.  
  594. 128
  595. 129
  596. 130
  597. 131
  598. 132
  599. 133
  600. 134
  601. 135
  602. 136</pre>
  603.     </td>
  604.     <td>
  605.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 128</span>
  606.  
  607. <span class='kw'>def</span> <span class='id identifier rubyid_system'>system</span>
  608.   <span class='id identifier rubyid_s'>s</span> <span class='op'>=</span> <span class='const'>OpenStruct</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span><span class='lparen'>(</span><span class='ivar'>@system</span><span class='rparen'>)</span>
  609.   <span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_each_pair'>each_pair</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_key'>key</span><span class='comma'>,</span> <span class='id identifier rubyid__'>_</span><span class='op'>|</span>
  610.     <span class='kw'>if</span> <span class='id identifier rubyid_overrides'>overrides</span><span class='period'>.</span><span class='id identifier rubyid_respond_to?'>respond_to?</span><span class='lparen'>(</span><span class='id identifier rubyid_key'>key</span><span class='rparen'>)</span>
  611.       <span class='id identifier rubyid_s'>s</span><span class='lbracket'>[</span><span class='id identifier rubyid_key'>key</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='id identifier rubyid_overrides'>overrides</span><span class='lbracket'>[</span><span class='id identifier rubyid_key'>key</span><span class='rbracket'>]</span>
  612.     <span class='kw'>end</span>
  613.   <span class='kw'>end</span>
  614.   <span class='id identifier rubyid_s'>s</span>
  615. <span class='kw'>end</span></pre>
  616.     </td>
  617.   </tr>
  618. </table>
  619. </div>
  620.     
  621.       <div class="method_details ">
  622.   <h3 class="signature " id="system_handle-class_method">
  623.   
  624.     + (<tt>Object</tt>) <strong>system_handle</strong> 
  625.   
  626.  
  627.   
  628.  
  629.   
  630. </h3><div class="docstring">
  631.   <div class="discussion">
  632.     
  633. <p>In case your code wants to edit the system classes directly. Typically used
  634. for test initialization.</p>
  635.  
  636.  
  637.   </div>
  638. </div>
  639. <div class="tags">
  640.   
  641.  
  642. </div><table class="source_code">
  643.   <tr>
  644.     <td>
  645.       <pre class="lines">
  646.  
  647.  
  648. 140
  649. 141
  650. 142</pre>
  651.     </td>
  652.     <td>
  653.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 140</span>
  654.  
  655. <span class='kw'>def</span> <span class='id identifier rubyid_system_handle'>system_handle</span>
  656.   <span class='ivar'>@system</span>
  657. <span class='kw'>end</span></pre>
  658.     </td>
  659.   </tr>
  660. </table>
  661. </div>
  662.     
  663.   </div>
  664.  
  665.   <div id="instance_method_details" class="method_details_list">
  666.     <h2>Instance Method Details</h2>
  667.  
  668.     
  669.       <div class="method_details first">
  670.   <h3 class="signature first" id="call-instance_method">
  671.   
  672.     - (<tt>Object</tt>) <strong>call</strong>(env) 
  673.   
  674.  
  675.   
  676.  
  677.   
  678. </h3><table class="source_code">
  679.   <tr>
  680.     <td>
  681.       <pre class="lines">
  682.  
  683.  
  684. 162
  685. 163
  686. 164
  687. 165
  688. 166
  689. 167
  690. 168
  691. 169
  692. 170
  693. 171
  694. 172
  695. 173
  696. 174
  697. 175</pre>
  698.     </td>
  699.     <td>
  700.       <pre class="code"><span class="info file"># File 'lib/hws_settings.rb', line 162</span>
  701.  
  702. <span class='kw'>def</span> <span class='id identifier rubyid_call'>call</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='rparen'>)</span>
  703.   <span class='id identifier rubyid_hws_settings'>hws_settings</span> <span class='op'>=</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_class'>class</span><span class='period'>.</span><span class='id identifier rubyid_settings'>settings</span>
  704.  
  705.   <span class='id identifier rubyid_env'>env</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_key'>key</span><span class='comma'>,</span> <span class='id identifier rubyid_value'>value</span><span class='op'>|</span>
  706.     <span class='id identifier rubyid_match'>match</span> <span class='op'>=</span> <span class='tstring'><span class='regexp_beg'>/</span><span class='tstring_content'>^HTTP_X_PERFORCE_HELIX_WEB_SERVICES_(.*)$</span><span class='regexp_end'>/</span></span><span class='period'>.</span><span class='id identifier rubyid_match'>match</span><span class='lparen'>(</span><span class='id identifier rubyid_key'>key</span><span class='rparen'>)</span>
  707.     <span class='kw'>if</span> <span class='id identifier rubyid_match'>match</span>
  708.       <span class='id identifier rubyid_hws_settings'>hws_settings</span><span class='lbracket'>[</span><span class='id identifier rubyid_match'>match</span><span class='lbracket'>[</span><span class='int'>1</span><span class='rbracket'>]</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='id identifier rubyid_value'>value</span>
  709.     <span class='kw'>end</span>
  710.   <span class='kw'>end</span>
  711.  
  712.   <span class='id identifier rubyid_env'>env</span><span class='lbracket'>[</span><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>hws_settings</span><span class='tstring_end'>&#39;</span></span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='id identifier rubyid_hws_settings'>hws_settings</span>
  713.  
  714.   <span class='ivar'>@app</span><span class='period'>.</span><span class='id identifier rubyid_call'>call</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='rparen'>)</span>
  715. <span class='kw'>end</span></pre>
  716.     </td>
  717.   </tr>
  718. </table>
  719. </div>
  720.     
  721.   </div>
  722.  
  723. </div>
  724.  
  725.     <div id="footer">
  726.   Generated on Tue Sep 15 01:20:29 2015 by
  727.   <a href="http://yardoc.org" title="Yay! A Ruby Documentation Tool" target="_parent">yard</a>
  728.   0.8.7.6 (ruby-2.2.3).
  729. </div>
  730.  
  731.   </body>
  732. </html>
# Change User Description Committed
#1 15741 ptomiak Branch HWS for my use. 10 years ago