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/*
 * Copyright (c) 2022. ZIQNI LTD registered in England and Wales, company registration number-09693684
 */
package com.ziqni.transformer.test.concurrent;

import java.util.concurrent.*;

public abstract class ZiqniExecutors {

    // CACHES CONNECTION //
    public static ForkJoinPool GlobalZiqniCachesExecutor = newForkJoinPool(Runtime.getRuntime().availableProcessors(), "ziqni-caches");

    // UTILS //
    public static ScheduledThreadPoolExecutor newMultiThreadScheduledExecutor(final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return new ScheduledThreadPoolExecutor(4, ziqniThreadFactory);
    }
    public static ThreadPoolExecutor newSingleThreadedExecutor(final ZiqniLinkedBlockingQueue workQueue, final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS, workQueue, ziqniThreadFactory);
    }

    public static ThreadPoolExecutor newMultiThreadedExecutor(final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return new ScheduledThreadPoolExecutor(4, ziqniThreadFactory);
    }
    public static ThreadPoolExecutor newMultiThreadedExecutor(final int nThreads, final ZiqniLinkedBlockingQueue workQueue, final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return new ThreadPoolExecutor(nThreads, nThreads*8, 0L, TimeUnit.MILLISECONDS, workQueue, ziqniThreadFactory);
    }

    public static ExecutorService newCachedThreadPool(final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return Executors.newCachedThreadPool(ziqniThreadFactory);
    }

    public static ExecutorService newFixedThreadPool(final int nThreads, final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return Executors.newFixedThreadPool(10, ziqniThreadFactory);
    }

    public static ScheduledThreadPoolExecutor newSingleThreadScheduledExecutor(final String executorNamePrefix){
        final var ziqniThreadFactory = new ZiqniThreadFactory(executorNamePrefix);
        return new ScheduledThreadPoolExecutor(1, ziqniThreadFactory);
    }

    public static ForkJoinPool newForkJoinPool(final int nThreads, final String threadPrefix){
        final ForkJoinPool.ForkJoinWorkerThreadFactory factory = pool -> {
            final ForkJoinWorkerThread worker = ForkJoinPool.defaultForkJoinWorkerThreadFactory.newThread(pool);
            worker.setName(threadPrefix + "-forkjoin-worker-thread-" + worker.getPoolIndex());
            return worker;
        };
        return new ForkJoinPool(nThreads, factory, null,true);
    }
}