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84 lines
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<!DOCTYPE html> <html> <head> <title>couchdb.js</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="../../docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="../..//winston/common.html"> winston/common.html </a> <a class="source" href="../..//winston/config/cli-config.html"> winston/config/cli-config.html </a> <a class="source" href="../..//winston/config/npm-config.html"> winston/config/npm-config.html </a> <a class="source" href="../..//winston/config/syslog-config.html"> winston/config/syslog-config.html </a> <a class="source" href="../..//winston/config.html"> winston/config.html </a> <a class="source" href="../..//winston/exception.html"> winston/exception.html </a> <a class="source" href="../..//winston/logger.html"> winston/logger.html </a> <a class="source" href="../..//winston/transports/console.html"> winston/transports/console.html </a> <a class="source" href="../..//winston/transports/couchdb.html"> winston/transports/couchdb.html </a> <a class="source" href="../..//winston/transports/file.html"> winston/transports/file.html </a> <a class="source" href="../..//winston/transports/loggly.html"> winston/transports/loggly.html </a> <a class="source" href="../..//winston/transports/transport.html"> winston/transports/transport.html </a> <a class="source" href="../..//winston/transports/webhook.html"> winston/transports/webhook.html </a> <a class="source" href="../..//winston/transports.html"> winston/transports.html </a> <a class="source" href="../..//winston.html"> winston.html </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> couchdb.js </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="cm">/*</span>
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<span class="cm"> * Couchdb.js: Transport for logging to Couchdb</span>
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<span class="cm"> *</span>
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<span class="cm"> * (C) 2011 Max Ogden</span>
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<span class="cm"> * MIT LICENSE</span>
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<span class="cm"> *</span>
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<span class="cm"> */</span>
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<span class="kd">var</span> <span class="nx">events</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'events'</span><span class="p">),</span>
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<span class="nx">http</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'http'</span><span class="p">),</span>
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<span class="nx">util</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'util'</span><span class="p">),</span>
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<span class="nx">common</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'../common'</span><span class="p">),</span>
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<span class="nx">Transport</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'./transport'</span><span class="p">).</span><span class="nx">Transport</span><span class="p">;</span> </pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <h3>function Couchdb (options)</h3>
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<h4>@options {Object} Options for this instance.</h4>
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<p>Constructor function for the Console transport object responsible
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for making arbitrary HTTP requests whenever log messages and metadata
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are received.</p> </td> <td class="code"> <div class="highlight"><pre><span class="kd">var</span> <span class="nx">Couchdb</span> <span class="o">=</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">Couchdb</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">options</span><span class="p">)</span> <span class="p">{</span>
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<span class="nx">Transport</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">options</span><span class="p">);</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">name</span> <span class="o">=</span> <span class="s1">'Couchdb'</span><span class="p">;</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">db</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">db</span><span class="p">;</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">user</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">user</span><span class="p">;</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">pass</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">pass</span><span class="p">;</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">host</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">host</span> <span class="o">||</span> <span class="s1">'localhost'</span><span class="p">;</span>
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<span class="k">this</span><span class="p">.</span><span class="nx">port</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">port</span> <span class="o">||</span> <span class="mi">5984</span><span class="p">;</span>
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<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">auth</span><span class="p">)</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>TODO: add http basic auth options for outgoing HTTP requests</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">}</span>
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<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">ssl</span><span class="p">)</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>TODO: add ssl support for outgoing HTTP requests</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">}</span>
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<span class="p">};</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>Inherit from <code>winston.Transport</code>.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">util</span><span class="p">.</span><span class="nx">inherits</span><span class="p">(</span><span class="nx">Couchdb</span><span class="p">,</span> <span class="nx">Transport</span><span class="p">);</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>Expose the name of this Transport on the prototype</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">Couchdb</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">name</span> <span class="o">=</span> <span class="s1">'Couchdb'</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <h3>function log (level, msg, [meta], callback)</h3>
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<h4>@level {string} Level at which to log the message.</h4>
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<h4>@msg {string} Message to log</h4>
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<h4>@meta {Object} <strong>Optional</strong> Additional metadata to attach</h4>
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<h4>@callback {function} Continuation to respond to when complete.</h4>
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<p>Core logging method exposed to Winston. Metadata is optional.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nx">Couchdb</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">log</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">level</span><span class="p">,</span> <span class="nx">msg</span><span class="p">,</span> <span class="nx">meta</span><span class="p">,</span> <span class="nx">callback</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">if</span> <span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">silent</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">return</span> <span class="nx">callback</span><span class="p">(</span><span class="kc">null</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
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<span class="p">}</span>
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<span class="kd">var</span> <span class="nx">self</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span>
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<span class="nx">message</span> <span class="o">=</span> <span class="nx">common</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="nx">meta</span><span class="p">),</span>
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<span class="nx">options</span><span class="p">,</span>
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<span class="nx">req</span><span class="p">;</span>
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<span class="nx">message</span><span class="p">.</span><span class="nx">level</span> <span class="o">=</span> <span class="nx">level</span><span class="p">;</span>
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<span class="nx">message</span><span class="p">.</span><span class="nx">message</span> <span class="o">=</span> <span class="nx">msg</span><span class="p">;</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>Prepare options for outgoing HTTP request</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">options</span> <span class="o">=</span> <span class="p">{</span>
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<span class="nx">host</span><span class="o">:</span> <span class="k">this</span><span class="p">.</span><span class="nx">host</span><span class="p">,</span>
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<span class="nx">port</span><span class="o">:</span> <span class="k">this</span><span class="p">.</span><span class="nx">port</span><span class="p">,</span>
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<span class="nx">path</span><span class="o">:</span> <span class="s2">"/"</span> <span class="o">+</span> <span class="k">this</span><span class="p">.</span><span class="nx">db</span><span class="p">,</span>
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<span class="nx">method</span><span class="o">:</span> <span class="s2">"POST"</span><span class="p">,</span>
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<span class="nx">headers</span><span class="o">:</span> <span class="p">{</span><span class="s2">"content-type"</span><span class="o">:</span> <span class="s2">"application/json"</span><span class="p">}</span>
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<span class="p">};</span>
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<span class="k">if</span> <span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">user</span> <span class="o">&&</span> <span class="nx">options</span><span class="p">.</span><span class="nx">pass</span><span class="p">)</span> <span class="p">{</span>
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<span class="nx">options</span><span class="p">.</span><span class="nx">headers</span><span class="p">[</span><span class="s2">"Authorization"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"Basic "</span> <span class="o">+</span> <span class="k">new</span> <span class="nx">Buffer</span><span class="p">(</span><span class="nx">options</span><span class="p">.</span><span class="nx">user</span> <span class="o">+</span> <span class="s2">":"</span> <span class="o">+</span> <span class="nx">options</span><span class="p">.</span><span class="nx">pass</span><span class="p">).</span><span class="nx">toString</span><span class="p">(</span><span class="s1">'base64'</span><span class="p">);</span>
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<span class="p">}</span>
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</pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <p>Perform HTTP logging request</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">req</span> <span class="o">=</span> <span class="nx">http</span><span class="p">.</span><span class="nx">request</span><span class="p">(</span><span class="nx">options</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">res</span><span class="p">)</span> <span class="p">{</span> </pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>No callback on request, fire and forget about the response</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">self</span><span class="p">.</span><span class="nx">emit</span><span class="p">(</span><span class="s1">'logged'</span><span class="p">,</span> <span class="nx">res</span><span class="p">);</span>
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<span class="p">});</span>
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<span class="nx">req</span><span class="p">.</span><span class="nx">on</span><span class="p">(</span><span class="s1">'error'</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">err</span><span class="p">)</span> <span class="p">{</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">¶</a> </div> <p>Propagate the <code>error</code> back up to the <code>Logger</code> that this
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instance belongs to.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">self</span><span class="p">.</span><span class="nx">emit</span><span class="p">(</span><span class="s1">'error'</span><span class="p">,</span> <span class="nx">err</span><span class="p">);</span>
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<span class="p">});</span>
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</pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">¶</a> </div> <p>Write logging event to the outgoing request body</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">req</span><span class="p">.</span><span class="nx">write</span><span class="p">(</span><span class="nx">JSON</span><span class="p">.</span><span class="nx">stringify</span><span class="p">({</span>
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<span class="nx">method</span><span class="o">:</span> <span class="s1">'log'</span><span class="p">,</span>
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<span class="nx">params</span><span class="o">:</span> <span class="p">{</span>
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<span class="nx">timestamp</span><span class="o">:</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">(),</span> <span class="c1">// RFC3339/ISO8601 format instead of common.timestamp()</span>
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<span class="nx">msg</span><span class="o">:</span> <span class="nx">msg</span><span class="p">,</span>
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<span class="nx">level</span><span class="o">:</span> <span class="nx">level</span><span class="p">,</span>
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<span class="nx">meta</span><span class="o">:</span> <span class="nx">meta</span>
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<span class="p">}</span>
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<span class="p">}));</span>
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<span class="nx">req</span><span class="p">.</span><span class="nx">end</span><span class="p">();</span>
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</pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">¶</a> </div> <p>Always return true, regardless of any errors</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">callback</span><span class="p">(</span><span class="kc">null</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
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<span class="p">};</span>
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</pre></div> </td> </tr> </tbody> </table> </div> </body> </html> |