diff options
Diffstat (limited to 'deps/npm/node_modules/npm-registry-fetch/node_modules/cacache/lib/entry-index.js')
| -rw-r--r-- | deps/npm/node_modules/npm-registry-fetch/node_modules/cacache/lib/entry-index.js | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/deps/npm/node_modules/npm-registry-fetch/node_modules/cacache/lib/entry-index.js b/deps/npm/node_modules/npm-registry-fetch/node_modules/cacache/lib/entry-index.js deleted file mode 100644 index fe1cd06457..0000000000 --- a/deps/npm/node_modules/npm-registry-fetch/node_modules/cacache/lib/entry-index.js +++ /dev/null @@ -1,225 +0,0 @@ -'use strict' - -const BB = require('bluebird') - -const contentPath = require('./content/path') -const crypto = require('crypto') -const fixOwner = require('./util/fix-owner') -const fs = require('graceful-fs') -const hashToSegments = require('./util/hash-to-segments') -const ms = require('mississippi') -const path = require('path') -const ssri = require('ssri') -const Y = require('./util/y.js') - -const indexV = require('../package.json')['cache-version'].index - -const appendFileAsync = BB.promisify(fs.appendFile) -const readFileAsync = BB.promisify(fs.readFile) -const readdirAsync = BB.promisify(fs.readdir) -const concat = ms.concat -const from = ms.from - -module.exports.NotFoundError = class NotFoundError extends Error { - constructor (cache, key) { - super(Y`No cache entry for \`${key}\` found in \`${cache}\``) - this.code = 'ENOENT' - this.cache = cache - this.key = key - } -} - -module.exports.insert = insert -function insert (cache, key, integrity, opts) { - opts = opts || {} - const bucket = bucketPath(cache, key) - const entry = { - key, - integrity: integrity && ssri.stringify(integrity), - time: Date.now(), - size: opts.size, - metadata: opts.metadata - } - return fixOwner.mkdirfix( - path.dirname(bucket), opts.uid, opts.gid - ).then(() => { - const stringified = JSON.stringify(entry) - // NOTE - Cleverness ahoy! - // - // This works because it's tremendously unlikely for an entry to corrupt - // another while still preserving the string length of the JSON in - // question. So, we just slap the length in there and verify it on read. - // - // Thanks to @isaacs for the whiteboarding session that ended up with this. - return appendFileAsync( - bucket, `\n${hashEntry(stringified)}\t${stringified}` - ) - }).then( - () => fixOwner.chownr(bucket, opts.uid, opts.gid) - ).catch({code: 'ENOENT'}, () => { - // There's a class of race conditions that happen when things get deleted - // during fixOwner, or between the two mkdirfix/chownr calls. - // - // It's perfectly fine to just not bother in those cases and lie - // that the index entry was written. Because it's a cache. - }).then(() => { - return formatEntry(cache, entry) - }) -} - -module.exports.find = find -function find (cache, key) { - const bucket = bucketPath(cache, key) - return bucketEntries(cache, bucket).then(entries => { - return entries.reduce((latest, next) => { - if (next && next.key === key) { - return formatEntry(cache, next) - } else { - return latest - } - }, null) - }).catch(err => { - if (err.code === 'ENOENT') { - return null - } else { - throw err - } - }) -} - -module.exports.delete = del -function del (cache, key, opts) { - return insert(cache, key, null, opts) -} - -module.exports.lsStream = lsStream -function lsStream (cache) { - const indexDir = bucketDir(cache) - const stream = from.obj() - - // "/cachename/*" - readdirOrEmpty(indexDir).map(bucket => { - const bucketPath = path.join(indexDir, bucket) - - // "/cachename/<bucket 0xFF>/*" - return readdirOrEmpty(bucketPath).map(subbucket => { - const subbucketPath = path.join(bucketPath, subbucket) - - // "/cachename/<bucket 0xFF>/<bucket 0xFF>/*" - return readdirOrEmpty(subbucketPath).map(entry => { - const getKeyToEntry = bucketEntries( - cache, - path.join(subbucketPath, entry) - ).reduce((acc, entry) => { - acc.set(entry.key, entry) - return acc - }, new Map()) - - return getKeyToEntry.then(reduced => { - for (let entry of reduced.values()) { - const formatted = formatEntry(cache, entry) - formatted && stream.push(formatted) - } - }).catch({code: 'ENOENT'}, nop) - }) - }) - }).then(() => { - stream.push(null) - }, err => { - stream.emit('error', err) - }) - - return stream -} - -module.exports.ls = ls -function ls (cache) { - return BB.fromNode(cb => { - lsStream(cache).on('error', cb).pipe(concat(entries => { - cb(null, entries.reduce((acc, xs) => { - acc[xs.key] = xs - return acc - }, {})) - })) - }) -} - -function bucketEntries (cache, bucket, filter) { - return readFileAsync( - bucket, 'utf8' - ).then(data => { - let entries = [] - data.split('\n').forEach(entry => { - if (!entry) { return } - const pieces = entry.split('\t') - if (!pieces[1] || hashEntry(pieces[1]) !== pieces[0]) { - // Hash is no good! Corruption or malice? Doesn't matter! - // EJECT EJECT - return - } - let obj - try { - obj = JSON.parse(pieces[1]) - } catch (e) { - // Entry is corrupted! - return - } - if (obj) { - entries.push(obj) - } - }) - return entries - }) -} - -module.exports._bucketDir = bucketDir -function bucketDir (cache) { - return path.join(cache, `index-v${indexV}`) -} - -module.exports._bucketPath = bucketPath -function bucketPath (cache, key) { - const hashed = hashKey(key) - return path.join.apply(path, [bucketDir(cache)].concat( - hashToSegments(hashed) - )) -} - -module.exports._hashKey = hashKey -function hashKey (key) { - return hash(key, 'sha256') -} - -module.exports._hashEntry = hashEntry -function hashEntry (str) { - return hash(str, 'sha1') -} - -function hash (str, digest) { - return crypto - .createHash(digest) - .update(str) - .digest('hex') -} - -function formatEntry (cache, entry) { - // Treat null digests as deletions. They'll shadow any previous entries. - if (!entry.integrity) { return null } - return { - key: entry.key, - integrity: entry.integrity, - path: contentPath(cache, entry.integrity), - size: entry.size, - time: entry.time, - metadata: entry.metadata - } -} - -function readdirOrEmpty (dir) { - return readdirAsync(dir) - .catch({code: 'ENOENT'}, () => []) - .catch({code: 'ENOTDIR'}, () => []) -} - -function nop () { -} |