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 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2022 QuestDB
 *
 *  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.
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package io.questdb.tasks;

import io.questdb.cairo.CairoEngine;
import io.questdb.mp.RingQueue;
import io.questdb.mp.Sequence;
import io.questdb.std.datetime.microtime.MicrosecondClock;

public final class TelemetryTask {
    public long created;
    public CharSequence id;
    public short event;
    public short origin;

    public static void doStoreTelemetry(CairoEngine engine, short event, short origin) {
        Sequence telemetryPubSeq = engine.getTelemetryPubSequence();
        if (null != telemetryPubSeq) {
            MicrosecondClock clock = engine.getConfiguration().getMicrosecondClock();
            RingQueue telemetryQueue = engine.getTelemetryQueue();
            store(telemetryQueue, telemetryPubSeq, event, origin, clock);
        }
    }

    public static void store(
            RingQueue telemetryQueue,
            Sequence telemetryPubSeq,
            short event,
            short origin,
            MicrosecondClock clock
    ) {
        long cursor = telemetryPubSeq.next();
        while (cursor == -2) {
            cursor = telemetryPubSeq.next();
        }

        if (cursor > -1) {
            TelemetryTask row = telemetryQueue.get(cursor);

            row.created = clock.getTicks();
            row.event = event;
            row.origin = origin;
            telemetryPubSeq.done(cursor);
        }
    }

    @FunctionalInterface
    public interface TelemetryMethod {
        void store(short event, short origin);
    }
}