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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
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
    }
}