io.micrometer.core.instrument.binder.system.UptimeMetrics Maven / Gradle / Ivy
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/**
* Copyright 2017 VMware, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micrometer.core.instrument.binder.system;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.TimeGauge;
import io.micrometer.core.instrument.binder.MeterBinder;
import io.micrometer.core.lang.NonNullApi;
import io.micrometer.core.lang.NonNullFields;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.util.concurrent.TimeUnit;
import static java.util.Collections.emptyList;
/**
* Uptime metrics.
*
* @author Michael Weirauch
*/
@NonNullApi
@NonNullFields
public class UptimeMetrics implements MeterBinder {
private final RuntimeMXBean runtimeMXBean;
private final Iterable tags;
public UptimeMetrics() {
this(emptyList());
}
public UptimeMetrics(Iterable tags) {
this(ManagementFactory.getRuntimeMXBean(), tags);
}
// VisibleForTesting
UptimeMetrics(RuntimeMXBean runtimeMXBean, Iterable tags) {
this.runtimeMXBean = runtimeMXBean;
this.tags = tags;
}
@Override
public void bindTo(MeterRegistry registry) {
TimeGauge.builder("process.uptime", runtimeMXBean, TimeUnit.MILLISECONDS, RuntimeMXBean::getUptime)
.tags(tags)
.description("The uptime of the Java virtual machine")
.register(registry);
TimeGauge.builder("process.start.time", runtimeMXBean, TimeUnit.MILLISECONDS, RuntimeMXBean::getStartTime)
.tags(tags)
.description("Start time of the process since unix epoch.")
.register(registry);
}
}