/*
 * Copyright 2017 NAVER Corp.
 *
 * 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 com.navercorp.pinpoint.profiler.monitor.metric.activethread;

import com.navercorp.pinpoint.profiler.context.active.ActiveTraceHistogramFactory;
import com.navercorp.pinpoint.profiler.context.active.ActiveTraceHistogramFactory.ActiveTraceHistogram;
import com.navercorp.pinpoint.thrift.dto.TActiveTraceHistogram;

import java.util.List;

/**
 * @author HyunGil Jeong
 */
public class DefaultActiveTraceMetric implements ActiveTraceMetric {

    private final ActiveTraceHistogramFactory activeTraceHistogramFactory;

    public DefaultActiveTraceMetric(ActiveTraceHistogramFactory activeTraceHistogramFactory) {
        if (activeTraceHistogramFactory == null) {
            throw new NullPointerException("activeTraceHistogramFactory must not be null");
        }
        this.activeTraceHistogramFactory = activeTraceHistogramFactory;
    }

    @Override
    public TActiveTraceHistogram activeTraceHistogram() {
        ActiveTraceHistogram activeTraceHistogram = activeTraceHistogramFactory.createHistogram();
        int histogramSchemaTypeCode = activeTraceHistogram.getHistogramSchema().getTypeCode();
        List<Integer> activeTraceCounts = activeTraceHistogram.getActiveTraceCounts();

        TActiveTraceHistogram tActiveTraceHistogram = new TActiveTraceHistogram();
        tActiveTraceHistogram.setHistogramSchemaType(histogramSchemaTypeCode);
        tActiveTraceHistogram.setActiveTraceCount(activeTraceCounts);
        return tActiveTraceHistogram;
    }

    @Override
    public String toString() {
        return "Default ActiveTraceCountMetric";
    }
}