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| <h1>Métricas con MicroProfile <code>@Metered</code></h1> |
| </div> |
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| |
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| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Este es un ejemplo sobre cómo utilizar las métricas de MicroProfile en TomEE.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_ejecute_la_aplicación">Ejecute la aplicación:</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>Dentro de la aplicación, hay un endpoint que te dará el estado del clima para |
| el día y la semana.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_obtenga_el_clima_para_la_semana">Obtenga el clima para la semana:</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-metered/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="_usando_code_metered_code">Usando <code>@Metered</code></h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Las métricas de MicroProfile tienen una función que se puede usar para medir |
| solicitudes a un servicio.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Para utilizar esta función, debe anotar los métodos de los recursos JAX-RS con |
| <code>@Metered</code>.</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-java" data-lang="java">@Path("/weather") |
| @Produces(MediaType.APPLICATION_JSON) |
| @Consumes(MediaType.APPLICATION_JSON) |
| @ApplicationScoped |
| public class WeatherService { |
| |
| @Path("/day/status") |
| @Metered(name = "dailyStatus", |
| unit = MetricUnits.MINUTES, |
| description = "Metrics to daily weather status method", |
| absolute = true) |
| @GET |
| @Produces(MediaType.TEXT_PLAIN) |
| public String dayStatus() { |
| return "Hi, today is a sunny day!"; |
| } |
| ... |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>Hay algunas configuraciones, como parte de <code>@Metered</code>, que necesita saber:</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String name</strong> |
| Opcional. Establece el nombre de la métrica. Si no se proporciona |
| explícitamente, se utiliza el nombre del objeto anotado.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>boolean absolute</strong> Si es verdadero, usa el nombre dado como el nombre absoluto |
| de la métrica. Si es falso, antepone el nombre del paquete y el nombre de la |
| clase antes del nombre dado. El valor predeterminado es falso.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String displayName</strong> |
| Opcional. Un nombre para mostrar legible para los metadatos.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String description</strong> |
| Opcional. Una descripción de la métrica.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String[] tags</strong> |
| Opcional. Matriz de cadenas en el formato <key>=<value> para suministrar |
| etiquetas especiales a una métrica.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>boolean reusable</strong> |
| Indica si una métrica con un nombre determinado se puede registrar en más de un |
| lugar. No se aplica a <code>@Gauges</code> (medidores).</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>String unit</strong> |
| Unidad de la métrica. El valor predeterminado para <code>@Metered</code> es nanosegundos.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_datos_de_la_métrica">Datos de la Métrica</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Verifique la métrica <code>@Metered</code> haciendo una solicitud <em>GET</em>:</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_formato_prometheus">Formato Prometheus:</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-metered/metrics/application/dailyStatus</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_respuesta_prometheus">Respuesta Prometheus:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-text" data-lang="text"># TYPE application:daily_status_seconds_count meter |
| application:daily_status_seconds_count 1.2E-7 |
| # TYPE application:daily_status_rate_per_second meter |
| application:daily_status_rate_per_second 0.0 |
| # TYPE application:daily_status_one_min_rate_per_second meter |
| application:daily_status_one_min_rate_per_second 1.3376002644204984E-19 |
| # TYPE application:daily_status_five_min_rate_per_second meter |
| application:daily_status_five_min_rate_per_second 3.5942838529305413E-20 |
| # TYPE application:daily_status_fifteen_min_rate_per_second meter |
| application:daily_status_fifteen_min_rate_per_second 3.4665766454142955E-21</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_formato_json">Formato JSON:</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Para el formato json, agregue el encabezado <code>Accept: application/json</code> a la |
| solicitud HTTP.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_respuesta_json">Respuesta JSON</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-javascript" data-lang="javascript">{ |
| "dailyStatus": { |
| "count": 2, |
| "fifteenMinRate": 5.77762774235716e-14, |
| "fiveMinRate": 5.990473088217569e-13, |
| "meanRate": 0, |
| "oneMinRate": 2.229333774034164e-12, |
| "unit": "minutes" |
| } |
| }</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_metadatos_métrica">Metadatos Métrica</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Una métrica tendrá metadatos para que pueda conocer más información al |
| respecto, como <code>displayName</code>,<code>description</code>, <code>tags</code>, etc.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Verifique los metadatos de la métrica haciendo una solicitud HTTP <em>OPTIONS</em>:</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_solicitud_http_em_options_em">Solicitud HTTP <em>OPTIONS</em></h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$ curl -X OPTIONS http://localhost:8080/mp-metrics-metered/metrics/application/dailyStatus</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_respuesta">Respuesta:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-javascript" data-lang="javascript">{ |
| "dailyStatus": { |
| "description": "Metrics to daily weather status method", |
| "displayName": "", |
| "name": "dailyStatus", |
| "reusable": false, |
| "tags": "", |
| "type": "meter", |
| "typeRaw": "METERED", |
| "unit": "minutes" |
| } |
| }</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_pruebe_la_aplicación">Pruebe la aplicación:</h2> |
| <div class="sectionbody"> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-bash" data-lang="bash">$ mvn test</code></pre> |
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