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/*
 * Copyright 2019 Netflix, Inc.
 *
 * 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.mantisrx.common.metrics;

import io.mantisrx.common.metrics.spectator.MetricId;
import rx.functions.Func0;


public class GaugeCallback implements Gauge {

    public static final String LEGACY_GAUGE_CALLBACK_METRICGROUP = "legacyGaugeCallbackMetricGroup";

    private String event;
    private Func0 valueCallback;
    private MetricId metricId;

    /**
     * @deprecated use {@link io.mantisrx.common.metrics.spectator.GaugeCallback} instead
     */
    @Deprecated
    public GaugeCallback(String event, Func0 valueCallback) {
        this.event = event;
        this.valueCallback = valueCallback;
        this.metricId = new MetricId(LEGACY_GAUGE_CALLBACK_METRICGROUP, event);
    }

    @Override
    public String event() {
        return event;
    }

    @Override
    public long value() {
        return valueCallback.call();
    }

    @Override
    public void increment() {}

    @Override
    public void decrement() {}


    @Override
    public void set(double value) {}

    @Override
    public void increment(double value) {}

    @Override
    public void decrement(double value) {}

    @Override
    public void set(long value) {}

    @Override
    public void increment(long value) {}

    @Override
    public void decrement(long value) {}

    @Override
    public MetricId id() {
        return metricId;
    }
}