81 lines
1.9 KiB
JavaScript
81 lines
1.9 KiB
JavaScript
import { kissLog } from "./log";
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/**
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* 任务池
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* @param {*} fn
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* @param {*} preFn
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* @param {*} _interval
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* @param {*} _limit
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* @returns
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*/
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export const taskPool = (
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fn,
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preFn,
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_interval = 100,
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_limit = 100,
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_retryInteral = 1000
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) => {
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const pool = [];
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const maxRetry = 2; // 最大重试次数
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let maxCount = _limit; // 最大数量
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let curCount = 0; // 当前数量
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let interval = _interval; // 间隔时间
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let timer = null;
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const run = async () => {
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// console.log("timer", timer);
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timer && clearTimeout(timer);
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timer = setTimeout(run, interval);
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if (curCount < maxCount) {
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const item = pool.shift();
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if (item) {
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curCount++;
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const { args, resolve, reject, retry } = item;
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try {
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const preArgs = preFn ? await preFn(item.args) : {};
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const res = await fn({ ...args, ...preArgs });
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resolve(res);
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} catch (err) {
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kissLog(err, "task");
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if (retry < maxRetry) {
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const retryTimer = setTimeout(() => {
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clearTimeout(retryTimer);
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pool.push({ args, resolve, reject, retry: retry + 1 });
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}, _retryInteral);
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} else {
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reject(err);
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}
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} finally {
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curCount--;
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}
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}
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}
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};
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return {
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push: async (args) => {
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if (!timer) {
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run();
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}
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return new Promise((resolve, reject) => {
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pool.push({ args, resolve, reject, retry: 0 });
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});
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},
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update: (_interval = 100, _limit = 100) => {
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if (_interval >= 0 && _interval <= 5000 && _interval !== interval) {
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interval = _interval;
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}
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if (_limit >= 1 && _limit <= 100 && _limit !== maxCount) {
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maxCount = _limit;
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}
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},
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clear: () => {
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pool.length = 0;
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curCount = 0;
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timer && clearTimeout(timer);
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timer = null;
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},
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};
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};
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