StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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71 lines
2.1 KiB
71 lines
2.1 KiB
4 years ago
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const Fetcher = require('./fetcher.js')
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const FileFetcher = require('./file.js')
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const _tarballFromResolved = Symbol.for('pacote.Fetcher._tarballFromResolved')
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const pacoteVersion = require('../package.json').version
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const fetch = require('npm-registry-fetch')
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const ssri = require('ssri')
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const Minipass = require('minipass')
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const _headers = Symbol('_headers')
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class RemoteFetcher extends Fetcher {
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constructor (spec, opts) {
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super(spec, opts)
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this.resolved = this.spec.fetchSpec
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// nam is a fermented pork sausage that is good to eat
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const nameat = this.spec.name ? `${this.spec.name}@` : ''
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this.pkgid = opts.pkgid ? opts.pkgid : `remote:${nameat}${this.resolved}`
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}
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[_tarballFromResolved] () {
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const stream = new Minipass()
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const fetchOpts = {
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...this.opts,
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headers: this[_headers](),
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spec: this.spec,
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integrity: this.integrity,
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algorithms: [ this.pickIntegrityAlgorithm() ],
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}
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fetch(this.resolved, fetchOpts).then(res => {
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const hash = res.headers.get('x-local-cache-hash')
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if (hash) {
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this.integrity = decodeURIComponent(hash)
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}
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res.body.on('error',
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/* istanbul ignore next - exceedingly rare and hard to simulate */
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er => stream.emit('error', er)
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).pipe(stream)
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}).catch(er => stream.emit('error', er))
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return stream
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}
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[_headers] () {
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return {
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// npm will override this, but ensure that we always send *something*
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'user-agent': this.opts['user-agent'] ||
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`pacote/${pacoteVersion} node/${process.version}`,
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...(this.opts.headers || {}),
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'pacote-version': pacoteVersion,
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'pacote-req-type': 'tarball',
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'pacote-pkg-id': this.pkgid,
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'pacote-integrity': String(this.integrity),
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}
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}
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get types () {
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return ['remote']
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}
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// getting a packument and/or manifest is the same as with a file: spec.
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// unpack the tarball stream, and then read from the package.json file.
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packument () {
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return FileFetcher.prototype.packument.apply(this)
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}
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manifest () {
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return FileFetcher.prototype.manifest.apply(this)
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}
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}
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module.exports = RemoteFetcher
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