/*
 * This file is part of LuckPerms, licensed under the MIT License.
 *
 *  Copyright (c) lucko (Luck) <luck@lucko.me>
 *  Copyright (c) contributors
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */

package me.lucko.luckperms.common.util;

import com.github.benmanes.caffeine.cache.Caffeine;

import java.util.concurrent.Executor;
import java.util.concurrent.ForkJoinPool;

public final class CaffeineFactory {
    private CaffeineFactory() {}

    /**
     * Our own fork join pool for LuckPerms cache operations.
     *
     * By default, Caffeine uses the ForkJoinPool.commonPool instance.
     * However... ForkJoinPool is a fixed size pool limited by Runtime.availableProcessors.
     * Some (bad) plugins incorrectly use this pool for i/o operations, make calls to Thread.sleep
     * or otherwise block waiting for something else to complete. This prevents the LP cache loading
     * operations from running.
     *
     * By using our own pool, we ensure this will never happen.
     */
    private static final ForkJoinPool loaderPool = new ForkJoinPool();

    public static Caffeine<Object, Object> newBuilder() {
        return Caffeine.newBuilder().executor(loaderPool);
    }

    public static Executor executor() {
        return loaderPool;
    }

}
