154 lines
4.2 KiB
JavaScript
154 lines
4.2 KiB
JavaScript
const path = require('path');
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const fs = require('fs');
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const get = require('simple-get');
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const pump = require('pump');
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const tfs = require('tar-fs');
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const zlib = require('zlib');
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const util = require('./util');
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const error = require('./error');
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const proxy = require('./proxy');
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const mkdirp = require('mkdirp-classic');
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function downloadPrebuild(downloadUrl, opts, cb) {
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let cachedPrebuild = util.cachedPrebuild(downloadUrl);
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const localPrebuild = util.localPrebuild(downloadUrl, opts);
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const tempFile = util.tempFile(cachedPrebuild);
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const log = opts.log || util.noopLogger;
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if (opts.nolocal) return download();
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log.info('looking for local prebuild @', localPrebuild);
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fs.access(localPrebuild, fs.R_OK | fs.W_OK, function (err) {
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if (err && err.code === 'ENOENT') {
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return download();
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}
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log.info('found local prebuild');
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cachedPrebuild = localPrebuild;
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unpack();
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});
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function download() {
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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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const reqOpts = proxy({ url: downloadUrl }, opts);
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if (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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Authorization: 'token ' + opts.token,
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};
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}
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const 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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}
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function unpack() {
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let binaryName;
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const updateName =
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opts.updateName ||
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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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const 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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const extract = tfs.extract(opts.path, options).on('entry', updateName);
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pump(
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fs.createReadStream(cachedPrebuild),
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zlib.createGunzip(),
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extract,
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function (err) {
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if (err) return cb(err);
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let 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 (
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opts.runtime === 'node' &&
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opts.platform === process.platform &&
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opts.abi === process.versions.modules &&
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opts.arch === process.arch
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) {
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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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}
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function ensureNpmCacheDir(cb) {
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const 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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