68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
var asyncHooks = require('async_hooks')
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var stackback = require('stackback')
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var path = require('path')
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var fs = require('fs')
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var sep = path.sep
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var active = new Map()
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var hook = asyncHooks.createHook({
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init (asyncId, type, triggerAsyncId, resource) {
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if (type === 'TIMERWRAP' || type === 'PROMISE') return
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if (type === 'PerformanceObserver' || type === 'RANDOMBYTESREQUEST') return
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var err = new Error('whatevs')
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var stacks = stackback(err)
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active.set(asyncId, {type, stacks, resource})
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},
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destroy (asyncId) {
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active.delete(asyncId)
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}
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})
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hook.enable()
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module.exports = whyIsNodeRunning
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function whyIsNodeRunning (logger) {
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if (!logger) logger = console
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hook.disable()
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var activeResources = [...active.values()].filter(function(r) {
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if (
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typeof r.resource.hasRef === 'function'
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&& !r.resource.hasRef()
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) return false
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return true
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})
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logger.error('There are %d handle(s) keeping the process running', activeResources.length)
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for (const o of activeResources) printStacks(o)
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function printStacks (o) {
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var stacks = o.stacks.slice(1).filter(function (s) {
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var filename = s.getFileName()
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return filename && filename.indexOf(sep) > -1 && filename.indexOf('internal' + sep) !== 0
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})
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logger.error('')
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logger.error('# %s', o.type)
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if (!stacks[0]) {
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logger.error('(unknown stack trace)')
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} else {
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var padding = ''
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stacks.forEach(function (s) {
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var pad = (s.getFileName() + ':' + s.getLineNumber()).replace(/./g, ' ')
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if (pad.length > padding.length) padding = pad
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})
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stacks.forEach(function (s) {
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var prefix = s.getFileName() + ':' + s.getLineNumber()
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try {
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var src = fs.readFileSync(s.getFileName(), 'utf-8').split(/\n|\r\n/)
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logger.error(prefix + padding.slice(prefix.length) + ' - ' + src[s.getLineNumber() - 1].trim())
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} catch (e) {
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logger.error(prefix + padding.slice(prefix.length))
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}
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})
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}
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}
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}
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