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 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package jdk.incubator.http;

import java.time.Duration;
import java.time.Instant;

/**
 * Timeout event notified by selector thread. Executes the given handler if
 * the timer not cancelled first.
 *
 * Register with {@link HttpClientImpl#registerTimer(TimeoutEvent)}.
 *
 * Cancel with {@link HttpClientImpl#cancelTimer(TimeoutEvent)}.
 */
abstract class TimeoutEvent implements Comparable<TimeoutEvent> {

    private final Instant deadline;

    TimeoutEvent(Duration duration) {
        deadline = Instant.now().plus(duration);
    }

    public abstract void handle();

    public Instant deadline() {
        return deadline;
    }

    @Override
    public int compareTo(TimeoutEvent other) {
        return this.deadline.compareTo(other.deadline);
    }
}