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'use strict'
const BB = require('bluebird')
const stat = BB.promisify(require('graceful-fs').stat)
const gentlyRm = BB.promisify(require('../../utils/gently-rm.js'))
const mkdirp = BB.promisify(require('mkdirp'))
const moduleStagingPath = require('../module-staging-path.js')
const move = require('../../utils/move.js')
const npa = require('npm-package-arg')
const npm = require('../../npm.js')
const packageId = require('../../utils/package-id.js')
let pacoteOpts
const path = require('path')
const localWorker = require('./extract-worker.js')
const workerFarm = require('worker-farm')
const isRegistry = require('../../utils/is-registry.js')
const WORKER_PATH = require.resolve('./extract-worker.js')
let workers
// NOTE: temporarily disabled on non-OSX due to ongoing issues:
//
// * Seems to make Windows antivirus issues much more common
// * Messes with Docker (I think)
//
// There are other issues that should be fixed that affect OSX too:
//
// * Logging is messed up right now because pacote does its own thing
// * Global deduplication in pacote breaks due to multiple procs
//
// As these get fixed, we can start experimenting with re-enabling it
// at least on some platforms.
const ENABLE_WORKERS = process.platform === 'darwin'
extract.init = () => {
if (ENABLE_WORKERS) {
workers = workerFarm({
maxConcurrentCallsPerWorker: npm.limit.fetch,
maxRetries: 1
}, WORKER_PATH)
}
return BB.resolve()
}
extract.teardown = () => {
if (ENABLE_WORKERS) {
workerFarm.end(workers)
workers = null
}
return BB.resolve()
}
module.exports = extract
function extract (staging, pkg, log) {
log.silly('extract', packageId(pkg))
const extractTo = moduleStagingPath(staging, pkg)
if (!pacoteOpts) {
pacoteOpts = require('../../config/pacote')
}
const opts = pacoteOpts({
integrity: pkg.package._integrity,
resolved: pkg.package._resolved
})
const args = [
pkg.package._requested,
extractTo,
opts
]
return BB.fromNode((cb) => {
let launcher = localWorker
let msg = args
const spec = typeof args[0] === 'string' ? npa(args[0]) : args[0]
args[0] = spec.raw
if (ENABLE_WORKERS && (isRegistry(spec) || spec.type === 'remote')) {
// We can't serialize these options
opts.loglevel = opts.log.level
opts.log = null
opts.dirPacker = null
// workers will run things in parallel!
launcher = workers
try {
msg = JSON.stringify(msg)
} catch (e) {
return cb(e)
}
}
launcher(msg, cb)
}).then(() => {
if (pkg.package.bundleDependencies || anyBundled(pkg)) {
return readBundled(pkg, staging, extractTo)
}
}).then(() => {
return gentlyRm(path.join(extractTo, 'node_modules'))
})
}
function anyBundled (top, pkg) {
if (!pkg) pkg = top
return pkg.children.some((child) => child.fromBundle === top || anyBundled(top, child))
}
function readBundled (pkg, staging, extractTo) {
return BB.map(pkg.children, (child) => {
if (!child.fromBundle) return
if (child.error) {
throw child.error
} else {
return stageBundledModule(pkg, child, staging, extractTo)
}
}, {concurrency: 10})
}
function stageBundledModule (bundler, child, staging, parentPath) {
const stageFrom = path.join(parentPath, 'node_modules', child.package.name)
const stageTo = moduleStagingPath(staging, child)
return BB.map(child.children, (child) => {
if (child.error) {
throw child.error
} else {
return stageBundledModule(bundler, child, staging, stageFrom)
}
}).then(() => {
return finishModule(bundler, child, stageTo, stageFrom)
})
}
function finishModule (bundler, child, stageTo, stageFrom) {
// If we were the one's who bundled this module…
if (child.fromBundle === bundler) {
return mkdirp(path.dirname(stageTo)).then(() => {
return move(stageFrom, stageTo)
})
} else {
return stat(stageFrom).then(() => gentlyRm(stageFrom), () => {})
}
}
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