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usr
/
lib
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node_modules
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npm
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node_modules
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worker-farm
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tests
/
Filename :
child.js
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'use strict' const fs = require('fs') const started = Date.now() module.exports = function (timeout, callback) { callback = callback.bind(null, null, process.pid, Math.random(), timeout) if (timeout) return setTimeout(callback, timeout) callback() } module.exports.args = function (callback) { callback(null, { argv : process.argv , cwd : process.cwd() , execArgv : process.execArgv }) } module.exports.run0 = function (callback) { module.exports(0, callback) } module.exports.killable = function (id, callback) { if (Math.random() < 0.5) return process.exit(-1) callback(null, id, process.pid) } module.exports.err = function (type, message, data, callback) { if (typeof data == 'function') { callback = data data = null } else { let err = new Error(message) Object.keys(data).forEach(function(key) { err[key] = data[key] }) callback(err) return } if (type == 'TypeError') return callback(new TypeError(message)) callback(new Error(message)) } module.exports.block = function () { while (true); } // use provided file path to save retries count among terminated workers module.exports.stubborn = function (path, callback) { function isOutdated(path) { return ((new Date).getTime() - fs.statSync(path).mtime.getTime()) > 2000 } // file may not be properly deleted, check if modified no earler than two seconds ago if (!fs.existsSync(path) || isOutdated(path)) { fs.writeFileSync(path, '1') process.exit(-1) } let retry = parseInt(fs.readFileSync(path, 'utf8')) if (Number.isNaN(retry)) return callback(new Error('file contents is not a number')) if (retry > 4) { callback(null, 12) } else { fs.writeFileSync(path, String(retry + 1)) process.exit(-1) } } module.exports.uptime = function (callback) { callback(null, Date.now() - started) }