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| |
| <h1>MicroProfile Metrics Timed</h1> |
| </div> |
| </div> |
| </div> |
| <div class="row"> |
| |
| <div class="col-md-12"> |
| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>This is an example on how to use MicroProfile metrics in TomEE.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_run_the_application">Run the application:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$ mvn clean install tomee:run</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>Within the application there is an endpoint that will give you the |
| weather status for the day.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_for_the_day_status_call">For the day status call:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$ curl -X GET http://localhost:8080/mp-metrics-timed/weather/day/status</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_response">Response:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-text" data-lang="text">Hi, today is a sunny day!</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_timed_feature">Timed Feature</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>MicroProfile Metrics has a feature that tracks the time of an event.</p> |
| </div> |
| <div class="paragraph"> |
| <p>To use this feature you need to annotate the JAX-RS resource method with |
| <code>@Timed</code>.</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-java" data-lang="java">@Path("/weather") |
| @ApplicationScoped |
| public class WeatherService { |
| |
| @Path("/day/status") |
| @Timed(name = "weather_day_status", absolute = true, |
| displayName = "Weather Day Status", |
| description = "This metric shows the weather status of the day.") |
| @GET |
| @Produces(MediaType.TEXT_PLAIN) |
| public String dayStatus() { |
| return "Hi, today is a sunny day!"; |
| } |
| ... |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>There are some configurations, as part of <code>@Timed</code>, that you need to know:</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String name</strong> Optional. Sets the name of the metric. If not explicitly |
| given the name of the annotated object is used.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>boolean absolute</strong> If true, uses the given name as the absolute name of |
| the metric. If false, prepends the package name and class name before |
| the given name. Default value is false.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String displayName</strong> Optional. A human readable display name for |
| metadata.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String description</strong> Optional. A description of the metric.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String[] tags</strong> Optional. Array of Strings in the = format to supply |
| special tags to a metric.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String unit</strong> Unit of the metric. Default for <code>@Timed</code> is nanoseconds.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_metric_data">Metric data</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Check the timed metric doing a <em>GET</em> request:</p> |
| </div> |
| <div class="sect2"> |
| <h3 id="_prometheus_format">Prometheus format:</h3> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$curl -X GET http://localhost:8080/mp-metrics-timed/metrics/application/weather_day_status</code></pre> |
| </div> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_response_2">Response:</h3> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-text" data-lang="text"># TYPE application:weather_day_status_seconds summary timer |
| # TYPE application:weather_day_status_seconds_count timer |
| application:weather_day_status_seconds_count 1.0 |
| # TYPE application:weather_day_status_rate_per_second timer |
| application:weather_day_status_rate_per_second 0.0 |
| # TYPE application:weather_day_status_one_min_rate_per_second timer |
| application:weather_day_status_one_min_rate_per_second 0.0 |
| # TYPE application:weather_day_status_five_min_rate_per_second timer |
| application:weather_day_status_five_min_rate_per_second 0.0 |
| # TYPE application:weather_day_status_fifteen_min_rate_per_second timer |
| application:weather_day_status_fifteen_min_rate_per_second 0.0 |
| # TYPE application:weather_day_status_min_seconds timer |
| application:weather_day_status_min_seconds 48352.0 |
| # TYPE application:weather_day_status_max_seconds timer |
| application:weather_day_status_max_seconds 48352.0 |
| # TYPE application:weather_day_status_mean_seconds timer |
| application:weather_day_status_mean_seconds 48352.0 |
| # TYPE application:weather_day_status_stddev_seconds timer |
| application:weather_day_status_stddev_seconds 0.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.5"} 48352.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.75"} 48352.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.95"} 48352.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.98"} 48352.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.99"} 48352.0 |
| # TYPE application:weather_day_status_seconds timer |
| application:weather_day_status_seconds{quantile="0.999"} 48352.0</code></pre> |
| </div> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_json_format">JSON Format:</h3> |
| <div class="paragraph"> |
| <p>For json format add the header <code>Accept: application/json</code> to the request.</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-javascript" data-lang="javascript">{ |
| "weather_day_status": { |
| "count": 1, |
| "fifteenMinRate": 0, |
| "fiveMinRate": 0, |
| "max": 48352, |
| "mean": 48352, |
| "meanRate": 0, |
| "min": 48352, |
| "oneMinRate": 0, |
| "p50": 48352, |
| "p75": 48352, |
| "p95": 48352, |
| "p98": 48352, |
| "p99": 48352, |
| "p999": 48352, |
| "stddev": 0 |
| } |
| }</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_metric_metadata">Metric metadata</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>A metric will have metadata so you can know more about it, like |
| <code>displayName</code>, <code>description</code>, <code>tags</code>, etc.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Check the metric metadata doing a <em>OPTIONS</em> request:</p> |
| </div> |
| <div class="sect2"> |
| <h3 id="_request">Request</h3> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$ curl -X OPTIONS http://localhost:8080/mp-metrics-timed/metrics/application/weather_day_status</code></pre> |
| </div> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_response_3">Response:</h3> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-javascript" data-lang="javascript">{ |
| "weather_day_status": { |
| "description": "This metric shows the weather status of the day.", |
| "displayName": "Weather Day Status", |
| "name": "weather_day_status", |
| "reusable": false, |
| "tags": "", |
| "type": "timer", |
| "typeRaw": "TIMER", |
| "unit": "nanoseconds" |
| } |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>You can also try it out using the <code>WeatherServiceTest.java</code> available in |
| the project.</p> |
| </div> |
| </div> |
| </div> |
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