SummaryResource.java
/*
* Copyright (c) 2023 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.glassfish.jersey.examples.micrometer;
import io.micrometer.core.instrument.Meter;
import io.micrometer.core.instrument.Timer;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import java.util.concurrent.TimeUnit;
import static org.glassfish.jersey.examples.micrometer.App.WEB_PATH;
import static org.glassfish.jersey.examples.micrometer.MetricsStore.REGISTRY_NAME;
@Path("summary")
public class SummaryResource {
@Context
private MetricsStore store;
@GET
@Produces("text/html")
public String getExtendedMeters() {
final StringBuffer result = new StringBuffer();
try {
result.append("<html><body>"
+ "Listing available meters<br/><br/>Many occurrences of the same name means that there are more meters"
+ " which could be used with different tags,"
+ " but this is actually a challenge to handle all available metrics :<br/><br/> ");
for (final Meter meter : store.getRegistry().getMeters()) {
result.append(meter.getId().getName());
result.append(";<br/>\n\r ");
}
} catch (Exception ex) {
result.append("Try clicking links below to gain more metrics.<br/>");
}
result.append("<br/>\n\r ");
result.append("<br/>\n\r ");
try {
final Timer timer = store.getRegistry().get(REGISTRY_NAME)
.tags("method", "GET", "status", "200", "exception", "None",
"outcome", "SUCCESS", "uri", "/micro/metrics")
.timer();
result.append(
String.format("Counts to the page with standard measurements: %d, time spent on requests to the init "
+ "page (millis): %f <br/>\n\r",
timer.count(), timer.totalTime(TimeUnit.MILLISECONDS)));
final Timer annotatedTimer = store.getRegistry().timer(TimedResource.TIMER_NAME,
"method", "GET", "status", "200", "exception", "None",
"outcome", "SUCCESS", "uri", "/micro/timed");
result.append(
String.format("Counts to the page with annotated measurements: %d, total time (millis): %f <br/>\n\r",
annotatedTimer.count(), annotatedTimer.totalTime(TimeUnit.MILLISECONDS)));
} catch (Exception ex) {
result.append(String.format("Counts to the init page: %d, total time (millis): %d <br/>\n\r",
0, 0));
result.append("Try clicking links below to gain more metrics.<br/>");
}
result.append("<br/><br/>Available pages for measurements: <a href=\""
+ WEB_PATH + "metrics\">measure requests in the standard way</a> , <a href=\""
+ WEB_PATH + "timed\">measure requests in the annotated way</a>");
return result.append("</body></html>").toString();
}
}