/*
 *  ============LICENSE_START=======================================================
 *  Copyright (C) 2024 Nordix Foundation
 *  ================================================================================
 *  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.
 *
 *  SPDX-License-Identifier: Apache-2.0
 *  ============LICENSE_END=========================================================
 */

import http from 'k6/http';
import { check } from 'k6';
import { Trend } from "k6/metrics";
import { NCMP_BASE_URL, getRandomCmHandleId } from './utils.js'

let ncmpOverheadTrend = new Trend("ncmp_overhead");

export const options = {
  vus: 12,
  duration: '30s',
  thresholds: {
    http_req_failed: ['rate == 0'],
    ncmp_overhead: ['avg <= 40'],
  },
};

// The function that defines VU logic.
export default function() {
    const cmHandleId = getRandomCmHandleId();
    const datastoreName = 'ncmp-datastore%3Apassthrough-operational';
    const url = `${NCMP_BASE_URL}/ncmp/v1/ch/${cmHandleId}/data/ds/${datastoreName}?resourceIdentifier=x&include-descendants=true`
    const response = http.get(url);
    check(response, {
        'status equals 200': (r) => r.status === 200,
    });

    // Calculate overhead assuming DMI data delay is 2500ms.
    const dmiDelay = 2500; // This should be same as value DATA_FOR_CM_HANDLE_DELAY_MS in docker-compose.yml
    const overhead = response.timings.duration - dmiDelay;
    ncmpOverheadTrend.add(overhead);
}