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|
'use strict'
const BB = require('bluebird')
const cacache = require('cacache')
const fetch = require('./fetch.js')
const fs = require('fs')
const npa = require('npm-package-arg')
const optCheck = require('./util/opt-check.js')
const path = require('path')
const ssri = require('ssri')
const retry = require('promise-retry')
const statAsync = BB.promisify(fs.stat)
const RETRIABLE_ERRORS = new Set(['ENOENT', 'EINTEGRITY', 'Z_DATA_ERROR'])
module.exports = withTarballStream
function withTarballStream (spec, opts, streamHandler) {
opts = optCheck(opts)
spec = npa(spec, opts.where)
// First, we check for a file: resolved shortcut
const tryFile = (
!opts.preferOnline &&
opts.integrity &&
opts.resolved &&
opts.resolved.startsWith('file:')
)
? BB.try(() => {
// NOTE - this is a special shortcut! Packages installed as files do not
// have a `resolved` field -- this specific case only occurs when you have,
// say, a git dependency or a registry dependency that you've packaged into
// a local file, and put that file: spec in the `resolved` field.
opts.log.silly('pacote', `trying ${spec} by local file: ${opts.resolved}`)
const file = path.resolve(opts.where || '.', opts.resolved.substr(5))
return statAsync(file)
.then(() => {
const verifier = ssri.integrityStream({ integrity: opts.integrity })
const stream = fs.createReadStream(file)
.on('error', err => verifier.emit('error', err))
.pipe(verifier)
return streamHandler(stream)
})
.catch(err => {
if (err.code === 'EINTEGRITY') {
opts.log.warn('pacote', `EINTEGRITY while extracting ${spec} from ${file}.You will have to recreate the file.`)
opts.log.verbose('pacote', `EINTEGRITY for ${spec}: ${err.message}`)
}
throw err
})
})
: BB.reject(Object.assign(new Error('no file!'), { code: 'ENOENT' }))
const tryDigest = tryFile
.catch(err => {
if (
opts.preferOnline ||
!opts.cache ||
!opts.integrity ||
!RETRIABLE_ERRORS.has(err.code)
) {
throw err
} else {
opts.log.silly('tarball', `trying ${spec} by hash: ${opts.integrity}`)
const stream = cacache.get.stream.byDigest(
opts.cache, opts.integrity, opts
)
stream.once('error', err => stream.on('newListener', (ev, l) => {
if (ev === 'error') { l(err) }
}))
return streamHandler(stream)
.catch(err => {
if (err.code === 'EINTEGRITY' || err.code === 'Z_DATA_ERROR') {
opts.log.warn('tarball', `cached data for ${spec} (${opts.integrity}) seems to be corrupted. Refreshing cache.`)
return cleanUpCached(opts.cache, opts.integrity, opts)
.then(() => { throw err })
} else {
throw err
}
})
}
})
const trySpec = tryDigest
.catch(err => {
if (!RETRIABLE_ERRORS.has(err.code)) {
// If it's not one of our retriable errors, bail out and give up.
throw err
} else {
opts.log.silly(
'tarball',
`no local data for ${spec}. Extracting by manifest.`
)
return BB.resolve(retry((tryAgain, attemptNum) => {
const tardata = fetch.tarball(spec, opts)
if (!opts.resolved) {
tardata.on('manifest', m => {
opts = opts.concat({ resolved: m._resolved })
})
tardata.on('integrity', i => {
opts = opts.concat({ integrity: i })
})
}
return BB.try(() => streamHandler(tardata))
.catch(err => {
// Retry once if we have a cache, to clear up any weird conditions.
// Don't retry network errors, though -- make-fetch-happen has already
// taken care of making sure we're all set on that front.
if (opts.cache && err.code && !err.code.match(/^E\d{3}$/)) {
if (err.code === 'EINTEGRITY' || err.code === 'Z_DATA_ERROR') {
opts.log.warn('tarball', `tarball data for ${spec} (${opts.integrity}) seems to be corrupted. Trying one more time.`)
}
return cleanUpCached(opts.cache, err.sri, opts)
.then(() => tryAgain(err))
} else {
throw err
}
})
}, { retries: 1 }))
}
})
return trySpec
.catch(err => {
if (err.code === 'EINTEGRITY') {
err.message = `Verification failed while extracting ${spec}:\n${err.message}`
}
throw err
})
}
function cleanUpCached (cachePath, integrity, opts) {
return cacache.rm.content(cachePath, integrity, opts)
}
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