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| <div class="section" id="creating-incrementing-counters"> |
| <h1>Creating & incrementing counters<a class="headerlink" href="#creating-incrementing-counters" title="Permalink to this headline">¶</a></h1> |
| <p>To create a new counter or increment an existing counter, include the |
| counter property in the body of a POST to the /events endpoint. More |
| than one counter can be incremented in the same request.</p> |
| <p><strong>Note</strong>: It may take up to 30 seconds after an event has been posted |
| for the counter to be incremented.</p> |
| <div class="section" id="request-syntax"> |
| <h2>Request syntax<a class="headerlink" href="#request-syntax" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-python"><div class="highlight"><pre>curl -X POST https://api.usergrid.com/<org>/<app>/events -d '{"timestamp":<timestamp>, "counters" : {<counter_name>:<increment_value>}}' |
| </pre></div> |
| </div> |
| <p>Parameters</p> |
| <table border="1" class="docutils"> |
| <colgroup> |
| <col width="19%" /> |
| <col width="81%" /> |
| </colgroup> |
| <thead valign="bottom"> |
| <tr class="row-odd"><th class="head">Parameter</th> |
| <th class="head">Description</th> |
| </tr> |
| </thead> |
| <tbody valign="top"> |
| <tr class="row-even"><td>org</td> |
| <td>Organization UUID or organization name</td> |
| </tr> |
| <tr class="row-odd"><td>app</td> |
| <td>Application UUID or application name</td> |
| </tr> |
| <tr class="row-even"><td>timestamp</td> |
| <td>A required UNIX timestamp that specifies the time the counter is being incremented.</td> |
| </tr> |
| <tr class="row-odd"><td>counter_name</td> |
| <td>The name of the counter to create or the existing counter to increment.</td> |
| </tr> |
| <tr class="row-even"><td>increment_value</td> |
| <td>The value to increment the counter by.</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Regarding the <code class="docutils literal"><span class="pre">increment_value</span></code>, a negative number can be specified to |
| decrement the value. A value of ‘0’ can be specified to reset the value |
| of the counter.</p> |
| <p>For the <code class="docutils literal"><span class="pre">timestamp</span></code>, specifying a value of 0 will automatically assign |
| the current time.</p> |
| </div> |
| <div class="section" id="example-request"> |
| <h2>Example request<a class="headerlink" href="#example-request" title="Permalink to this headline">¶</a></h2> |
| <p>The following request will increment the ‘button_clicks’ counter by |
| one, with a timestamp of the current time.</p> |
| <div class="highlight-python"><div class="highlight"><pre>curl -X POST https://api.usergrid.com/your-org/your-app/events -d '{"timestamp":0, "counters" : {"button_clicks":1}}' |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="example-response"> |
| <h2>Example response<a class="headerlink" href="#example-response" title="Permalink to this headline">¶</a></h2> |
| <div class="highlight-python"><div class="highlight"><pre><span class="p">{</span> |
| <span class="s">"action"</span> <span class="p">:</span> <span class="s">"post"</span><span class="p">,</span> |
| <span class="s">"application"</span> <span class="p">:</span> <span class="s">"f34f4222-a166-11e2-a7f7-02e81adcf3d0"</span><span class="p">,</span> |
| <span class="s">"params"</span> <span class="p">:</span> <span class="p">{</span> <span class="p">},</span> |
| <span class="s">"path"</span> <span class="p">:</span> <span class="s">"/events"</span><span class="p">,</span> |
| <span class="s">"uri"</span> <span class="p">:</span> <span class="s">"https://api.usergrid.com/your-org/your-app/events"</span><span class="p">,</span> |
| <span class="s">"entities"</span> <span class="p">:</span> <span class="p">[</span> <span class="p">{</span> |
| <span class="s">"uuid"</span> <span class="p">:</span> <span class="s">"b11217fc-9d3a-1427-b24e-699740088e05"</span><span class="p">,</span> |
| <span class="s">"type"</span> <span class="p">:</span> <span class="s">"event"</span><span class="p">,</span> |
| <span class="s">"created"</span> <span class="p">:</span> <span class="mi">1401224590293</span><span class="p">,</span> |
| <span class="s">"modified"</span> <span class="p">:</span> <span class="mi">1401224590293</span><span class="p">,</span> |
| <span class="s">"timestamp"</span> <span class="p">:</span> <span class="mi">1401224590293</span><span class="p">,</span> |
| <span class="s">"counters"</span> <span class="p">:</span> <span class="p">{</span> |
| <span class="s">"button_clicks"</span> <span class="p">:</span> <span class="mi">1</span> |
| <span class="p">},</span> |
| <span class="s">"message"</span> <span class="p">:</span> <span class="n">null</span><span class="p">,</span> |
| <span class="s">"metadata"</span> <span class="p">:</span> <span class="p">{</span> |
| <span class="s">"path"</span> <span class="p">:</span> <span class="s">"/events/b11217fc-9d3a-1427-b24e-699740088e05"</span> |
| <span class="p">}</span> |
| <span class="p">}</span> <span class="p">],</span> |
| <span class="s">"timestamp"</span> <span class="p">:</span> <span class="mi">1401224590291</span><span class="p">,</span> |
| <span class="s">"duration"</span> <span class="p">:</span> <span class="mi">30</span><span class="p">,</span> |
| <span class="s">"organization"</span> <span class="p">:</span> <span class="s">"your-org"</span><span class="p">,</span> |
| <span class="s">"applicationName"</span> <span class="p">:</span> <span class="s">"your-app"</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="decrementing-resetting-counters"> |
| <h1>Decrementing/resetting counters<a class="headerlink" href="#decrementing-resetting-counters" title="Permalink to this headline">¶</a></h1> |
| <p>To decrement a counter, specify a negative number for the counter value |
| in any of the above examples.</p> |
| <p>To reset a counter, specify a value of 0 for the counter value in any of |
| the above examples.</p> |
| <p>Note that the Usergrid JavaScript SDK also provides dedicated methods |
| for decrementing and resetting counters.</p> |
| </div> |
| <div class="section" id="using-counters-hierarchically"> |
| <h1>Using counters hierarchically<a class="headerlink" href="#using-counters-hierarchically" title="Permalink to this headline">¶</a></h1> |
| <p>You can organize counters into hierarchies by giving them dot-separated |
| names, e.g. <code class="docutils literal"><span class="pre">button_clicks.homepage</span></code>. Incrementing a counter lower in |
| a hierarchy increments all of the counters upward in the hierarchy |
| chain.</p> |
| <p>For example, you want to log errors that your app generates, so you |
| create hierarchical counters for each module and function within that |
| module. In this example, you create the following set of counters:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="n">errors</span> |
| <span class="n">errors</span><span class="o">.</span><span class="n">module</span> |
| <span class="n">errors</span><span class="o">.</span><span class="n">module</span><span class="o">.</span><span class="n">function</span> |
| </pre></div> |
| </div> |
| <p>Incrementing <code class="docutils literal"><span class="pre">errors.module.function</span></code> by 1 increments all three |
| counters by 1. A hierarchy can be a useful way of easily tracking |
| actions in your app at both a cumulative and granular level.</p> |
| </div> |
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