73 lines
1.6 KiB
JavaScript
73 lines
1.6 KiB
JavaScript
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/*
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* @Author: zoujie.wzj
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* @Date: 2016-01-23 18:18:28
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* @Last Modified by: Ayon Lee
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* @Last Modified on: 2018-10-19
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*/
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'use strict'
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const findPid = require('./find_pid')
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const findProcess = require('./find_process')
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const findBy = {
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port (port, strict) {
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return findPid(port, strict)
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.then(pid => {
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return findBy.pid(pid, strict)
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}, () => {
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// return empty array when pid not found
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return []
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})
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},
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pid (pid, strict) {
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return findProcess({
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pid: pid,
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strict
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})
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},
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name (name, strict) {
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return findProcess({
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name: name,
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strict
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})
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}
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}
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/**
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* find process by condition
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*
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* return Promise: [{
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* pid: <process id>,
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* ppid: <process parent id>,
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* uid: <user id (*nix)>,
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* gid: <user group id (*nix)>,
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* name: <command name>,
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* cmd: <process run args>
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* }, ...]
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*
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* If no process found, resolve process with empty array (only reject when error occured)
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*
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* @param {String} by condition: port/pid/name ...
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* @param {Mixed} condition value
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* @return {Promise}
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*/
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function find (by, value, strict) {
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return new Promise((resolve, reject) => {
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if (!(by in findBy)) {
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reject(new Error(`do not support find by "${by}"`))
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} else {
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const isNumber = /^\d+$/.test(value)
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if (by === 'pid' && !isNumber) {
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reject(new Error('pid must be a number'))
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} else if (by === 'port' && !isNumber) {
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reject(new Error('port must be a number'))
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} else {
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findBy[by](value, strict).then(resolve, reject)
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}
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}
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})
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}
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module.exports = find
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