com.github.yizzuide.milkomeda.pulsar.PulsarHolder Maven / Gradle / Ivy

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/*
 * Copyright (c) 2021 yizzuide All rights Reserved.
 * 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 com.github.yizzuide.milkomeda.pulsar;

import org.springframework.web.context.request.async.DeferredResult;

import java.util.concurrent.Callable;

/**
 * PulsarHolder
 * Pulsar 静态资源引用类
 *
 * @author yizzuide
 * @since 1.0.0
 * @version 3.12.10
 * 

 * Create at 2019/04/30 15:47
 */
public class PulsarHolder {

    private static Pulsar pulsar;

    static void setPulsar(Pulsar pulsar) { PulsarHolder.pulsar = pulsar; }

    /**
     * 获取Pulsar
     * @return Pulsar
     */
    public static Pulsar getPulsar() {
        return pulsar;
    }

    /**
     * 通过 Callable 和 PulsarDeferredResult 推迟运行耗时请求处理再返回
     *
     * @param callable  运行方法，业务代码里可以直接返回数据。如：return ResponseEntity.ok(data);
     * @param identifier    PulsarDeferredResult或PulsarDeferredResultID
     * @return 返回null用于配合 @PulsarFlow 的使用，其它地方使用可以忽略这个返回值（因为这个不是真实要返回的数据）
     */
    public static Object defer(Callable