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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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package org.apache.james.metrics.dropwizard;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;

import org.apache.james.metrics.api.Metric;
import org.apache.james.metrics.api.MetricFactory;
import org.apache.james.metrics.api.TimeMetric;

import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.jmx.JmxReporter;

public class DropWizardMetricFactory implements MetricFactory {

    private final MetricRegistry metricRegistry;
    private final JmxReporter jmxReporter;

    @Inject
    public DropWizardMetricFactory(MetricRegistry metricRegistry) {
        this.metricRegistry = metricRegistry;
        this.jmxReporter = JmxReporter.forRegistry(metricRegistry)
            .build();
    }

    @Override
    public Metric generate(String name) {
        return new DropWizardMetric(metricRegistry.counter(name));
    }

    @Override
    public TimeMetric timer(String name) {
        return new DropWizardTimeMetric(name, metricRegistry.timer(name).time());
    }

    @PostConstruct
    public void start() {
        jmxReporter.start();
    }

    @PreDestroy
    public void stop() {
        jmxReporter.stop();
    }

}
