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Runtime artifact for engineblock; This module ties the core libraries, provided drivers, and API into a single executable jar

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/*
 *
 *    Copyright 2016 jshook
 *    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
 *
 *        http://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.engineblock.metrics;

import com.codahale.metrics.MetricRegistry;
import io.engineblock.activityapi.core.MetricRegistryService;
import io.virtdata.annotations.Service;

@Service(MetricRegistryService.class)
public class MetricsContext implements MetricRegistryService {

    private static MetricsContext instance;

    private MetricReporters metricReporters = MetricReporters.getInstance();
    private MetricRegistry metrics = new EBMetricsRegistry();

    public static MetricsContext getInstance() {
        synchronized (MetricsContext.class) {
            if (instance==null) {
                instance = new MetricsContext();
            }
        }
        return instance;
    }

    public MetricReporters getReporters() {
        return metricReporters;
    }

    public MetricRegistry getMetrics() {
        return metrics;
    }

    /**
     * Convenience method to unclutter code. This will be used everywhere.
     * @return The default metric context.
     */
    public static MetricRegistry metrics() {
        return getInstance().getMetrics();
    }

    @Override
    public MetricRegistry getMetricRegistry() {
        return getMetrics();
    }
}