fish.payara.microprofile.metrics.cdi.producer.MetricProducer Maven / Gradle / Ivy

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 *    Copyright (c) [2018-2020] Payara Foundation and/or its affiliates. All rights reserved.
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 *     General Public License Version 2 only ("GPL") or the Common Development
 *     and Distribution License("CDDL") (collectively, the "License").  You
 *     may not use this file except in compliance with the License.  You can
 *     obtain a copy of the License at
 *     https://github.com/payara/Payara/blob/master/LICENSE.txt
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 *     When distributing the software, include this License Header Notice in each
 *     file and include the License file at glassfish/legal/LICENSE.txt.
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 *     exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 *     file that accompanied this code.
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 *     Modifications:
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package fish.payara.microprofile.metrics.cdi.producer;

import fish.payara.microprofile.metrics.cdi.AnnotationReader;

import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Inject;
import org.eclipse.microprofile.metrics.ConcurrentGauge;
import org.eclipse.microprofile.metrics.Counter;
import org.eclipse.microprofile.metrics.Gauge;
import org.eclipse.microprofile.metrics.Histogram;
import org.eclipse.microprofile.metrics.Meter;
import org.eclipse.microprofile.metrics.MetricRegistry;
import org.eclipse.microprofile.metrics.MetricType;
import org.eclipse.microprofile.metrics.SimpleTimer;
import org.eclipse.microprofile.metrics.Timer;
import org.eclipse.microprofile.metrics.annotation.Metric;

@Dependent
public class MetricProducer {

    private static final AnnotationReader COUNTER = AnnotationReader.METRIC.asType(MetricType.COUNTER);
    private static final AnnotationReader CONCURRENT_GAUGE = AnnotationReader.METRIC.asType(MetricType.CONCURRENT_GAUGE);
    private static final AnnotationReader GAUGE = AnnotationReader.METRIC.asType(MetricType.GAUGE);
    private static final AnnotationReader HISTOGRAM = AnnotationReader.METRIC.asType(MetricType.HISTOGRAM);
    private static final AnnotationReader METER = AnnotationReader.METRIC.asType(MetricType.METERED);
    private static final AnnotationReader SIMPLE_TIMER = AnnotationReader.METRIC.asType(MetricType.SIMPLE_TIMER);
    private static final AnnotationReader TIMER = AnnotationReader.METRIC.asType(MetricType.TIMER);

    @Inject
    private MetricRegistry registry;

    @Produces
    private Counter counter(InjectionPoint ip) {
        return COUNTER.getOrRegister(ip, Counter.class, registry);
    }

    @Produces
    private ConcurrentGauge concurrentGauge(InjectionPoint ip) {
        return CONCURRENT_GAUGE.getOrRegister(ip, ConcurrentGauge.class, registry);
    }

    @SuppressWarnings("unchecked")
    @Produces
    private  Gauge gauge(InjectionPoint ip) {
        return GAUGE.getOrRegister(ip, Gauge.class, registry);
    }

    @Produces
    private Histogram histogram(InjectionPoint ip) {
        return HISTOGRAM.getOrRegister(ip, Histogram.class, registry);
    }

    @Produces
    private Meter meter(InjectionPoint ip) {
        return METER.getOrRegister(ip, Meter.class, registry);
    }

    @Produces
    private SimpleTimer simpleTimer(InjectionPoint ip) {
        return SIMPLE_TIMER.getOrRegister(ip, SimpleTimer.class, registry);
    }

    @Produces
    private Timer timer(InjectionPoint ip) {
        return TIMER.getOrRegister(ip, Timer.class, registry);
    }

}