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130 lines
3.5 KiB
130 lines
3.5 KiB
var path = require('path')
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var fs = require('fs')
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var get = require('simple-get')
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var pump = require('pump')
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var tfs = require('tar-fs')
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var noop = Object.assign({
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http: function () {},
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silly: function () {}
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}, require('noop-logger'))
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var zlib = require('zlib')
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var util = require('./util')
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var error = require('./error')
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var proxy = require('./proxy')
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var mkdirp = require('mkdirp')
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function downloadPrebuild (downloadUrl, opts, cb) {
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var cachedPrebuild = util.cachedPrebuild(downloadUrl)
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var tempFile = util.tempFile(cachedPrebuild)
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var log = opts.log || noop
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ensureNpmCacheDir(function (err) {
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if (err) return onerror(err)
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log.info('looking for cached prebuild @', cachedPrebuild)
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fs.access(cachedPrebuild, fs.R_OK | fs.W_OK, function (err) {
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if (!(err && err.code === 'ENOENT')) {
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log.info('found cached prebuild')
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return unpack()
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}
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log.http('request', 'GET ' + downloadUrl)
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var reqOpts = proxy({ url: downloadUrl }, opts)
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if (opts.token) {
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reqOpts.url += '?access_token=' + opts.token
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reqOpts.headers = {
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'User-Agent': 'simple-get',
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'Accept': 'application/octet-stream'
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}
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}
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var req = get(reqOpts, function (err, res) {
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if (err) return onerror(err)
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log.http(res.statusCode, downloadUrl)
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if (res.statusCode !== 200) return onerror()
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mkdirp(util.prebuildCache(), function () {
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log.info('downloading to @', tempFile)
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pump(res, fs.createWriteStream(tempFile), function (err) {
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if (err) return onerror(err)
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fs.rename(tempFile, cachedPrebuild, function (err) {
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if (err) return cb(err)
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log.info('renaming to @', cachedPrebuild)
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unpack()
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})
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})
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})
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})
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req.setTimeout(30 * 1000, function () {
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req.abort()
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})
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})
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function onerror (err) {
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fs.unlink(tempFile, function () {
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cb(err || error.noPrebuilts(opts))
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})
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}
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})
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function unpack () {
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var binaryName
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var updateName = opts.updateName || function (entry) {
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if (/\.node$/i.test(entry.name)) binaryName = entry.name
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}
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log.info('unpacking @', cachedPrebuild)
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var options = {
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readable: true,
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writable: true,
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hardlinkAsFilesFallback: true
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}
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var extract = tfs.extract(opts.path, options).on('entry', updateName)
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pump(fs.createReadStream(cachedPrebuild), zlib.createGunzip(), extract,
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function (err) {
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if (err) return cb(err)
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var resolved
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if (binaryName) {
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try {
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resolved = path.resolve(opts.path || '.', binaryName)
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} catch (err) {
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return cb(err)
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}
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log.info('unpack', 'resolved to ' + resolved)
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if (opts.runtime === 'node' && opts.platform === process.platform && opts.abi === process.versions.modules && opts.arch === process.arch) {
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try {
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require(resolved)
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} catch (err) {
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return cb(err)
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}
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log.info('unpack', 'required ' + resolved + ' successfully')
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}
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}
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cb(null, resolved)
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})
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}
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function ensureNpmCacheDir (cb) {
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var cacheFolder = util.npmCache()
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fs.access(cacheFolder, fs.R_OK | fs.W_OK, function (err) {
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if (err && err.code === 'ENOENT') {
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return makeNpmCacheDir()
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}
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cb(err)
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})
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function makeNpmCacheDir () {
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log.info('npm cache directory missing, creating it...')
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mkdirp(cacheFolder, cb)
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}
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}
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}
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module.exports = downloadPrebuild
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