/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.graylog2.shared.metrics.jersey2;

import com.codahale.metrics.Meter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.annotation.Metered;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ResourceInfo;
import java.io.IOException;

public class MeteredMetricsFilter extends AbstractMetricsFilter {

    private final Meter meter;

    public MeteredMetricsFilter(MetricRegistry metricRegistry, ResourceInfo resourceInfo) {
        final Metered annotation = resourceInfo.getResourceMethod().getAnnotation(Metered.class);
        meter = metricRegistry.meter(chooseName(annotation.name(), annotation.absolute(), resourceInfo.getResourceMethod()));
    }
    @Override
    public void filter(ContainerRequestContext requestContext) throws IOException {
        meter.mark();
    }

    @Override
    public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException {
        // nothing to do, we are just counting
    }
}