diff options
Diffstat (limited to 'sandbox/testAppNevena/Front/node_modules/cacache/lib/entry-index.js')
| -rw-r--r-- | sandbox/testAppNevena/Front/node_modules/cacache/lib/entry-index.js | 394 |
1 files changed, 0 insertions, 394 deletions
diff --git a/sandbox/testAppNevena/Front/node_modules/cacache/lib/entry-index.js b/sandbox/testAppNevena/Front/node_modules/cacache/lib/entry-index.js deleted file mode 100644 index 71aac5ed..00000000 --- a/sandbox/testAppNevena/Front/node_modules/cacache/lib/entry-index.js +++ /dev/null @@ -1,394 +0,0 @@ -'use strict' - -const util = require('util') -const crypto = require('crypto') -const fs = require('fs') -const Minipass = require('minipass') -const path = require('path') -const ssri = require('ssri') -const uniqueFilename = require('unique-filename') - -const { disposer } = require('./util/disposer') -const contentPath = require('./content/path') -const fixOwner = require('./util/fix-owner') -const hashToSegments = require('./util/hash-to-segments') -const indexV = require('../package.json')['cache-version'].index -const moveFile = require('@npmcli/move-file') -const _rimraf = require('rimraf') -const rimraf = util.promisify(_rimraf) -rimraf.sync = _rimraf.sync - -const appendFile = util.promisify(fs.appendFile) -const readFile = util.promisify(fs.readFile) -const readdir = util.promisify(fs.readdir) -const writeFile = util.promisify(fs.writeFile) - -module.exports.NotFoundError = class NotFoundError extends Error { - constructor (cache, key) { - super(`No cache entry for ${key} found in ${cache}`) - this.code = 'ENOENT' - this.cache = cache - this.key = key - } -} - -module.exports.compact = compact - -async function compact (cache, key, matchFn, opts = {}) { - const bucket = bucketPath(cache, key) - const entries = await bucketEntries(bucket) - const newEntries = [] - // we loop backwards because the bottom-most result is the newest - // since we add new entries with appendFile - for (let i = entries.length - 1; i >= 0; --i) { - const entry = entries[i] - // a null integrity could mean either a delete was appended - // or the user has simply stored an index that does not map - // to any content. we determine if the user wants to keep the - // null integrity based on the validateEntry function passed in options. - // if the integrity is null and no validateEntry is provided, we break - // as we consider the null integrity to be a deletion of everything - // that came before it. - if (entry.integrity === null && !opts.validateEntry) - break - - // if this entry is valid, and it is either the first entry or - // the newEntries array doesn't already include an entry that - // matches this one based on the provided matchFn, then we add - // it to the beginning of our list - if ((!opts.validateEntry || opts.validateEntry(entry) === true) && - (newEntries.length === 0 || - !newEntries.find((oldEntry) => matchFn(oldEntry, entry)))) - newEntries.unshift(entry) - } - - const newIndex = '\n' + newEntries.map((entry) => { - const stringified = JSON.stringify(entry) - const hash = hashEntry(stringified) - return `${hash}\t${stringified}` - }).join('\n') - - const setup = async () => { - const target = uniqueFilename(path.join(cache, 'tmp'), opts.tmpPrefix) - await fixOwner.mkdirfix(cache, path.dirname(target)) - return { - target, - moved: false, - } - } - - const teardown = async (tmp) => { - if (!tmp.moved) - return rimraf(tmp.target) - } - - const write = async (tmp) => { - await writeFile(tmp.target, newIndex, { flag: 'wx' }) - await fixOwner.mkdirfix(cache, path.dirname(bucket)) - // we use @npmcli/move-file directly here because we - // want to overwrite the existing file - await moveFile(tmp.target, bucket) - tmp.moved = true - try { - await fixOwner.chownr(cache, bucket) - } catch (err) { - if (err.code !== 'ENOENT') - throw err - } - } - - // write the file atomically - await disposer(setup(), teardown, write) - - // we reverse the list we generated such that the newest - // entries come first in order to make looping through them easier - // the true passed to formatEntry tells it to keep null - // integrity values, if they made it this far it's because - // validateEntry returned true, and as such we should return it - return newEntries.reverse().map((entry) => formatEntry(cache, entry, true)) -} - -module.exports.insert = insert - -function insert (cache, key, integrity, opts = {}) { - const { metadata, size } = opts - const bucket = bucketPath(cache, key) - const entry = { - key, - integrity: integrity && ssri.stringify(integrity), - time: Date.now(), - size, - metadata, - } - return fixOwner - .mkdirfix(cache, path.dirname(bucket)) - .then(() => { - const stringified = JSON.stringify(entry) - // NOTE - Cleverness ahoy! - // - // This works because it's tremendously unlikely for an entry to corrupt - // another while still preserving the string length of the JSON in - // question. So, we just slap the length in there and verify it on read. - // - // Thanks to @isaacs for the whiteboarding session that ended up with - // this. - return appendFile(bucket, `\n${hashEntry(stringified)}\t${stringified}`) - }) - .then(() => fixOwner.chownr(cache, bucket)) - .catch((err) => { - if (err.code === 'ENOENT') - return undefined - - throw err - // There's a class of race conditions that happen when things get deleted - // during fixOwner, or between the two mkdirfix/chownr calls. - // - // It's perfectly fine to just not bother in those cases and lie - // that the index entry was written. Because it's a cache. - }) - .then(() => { - return formatEntry(cache, entry) - }) -} - -module.exports.insert.sync = insertSync - -function insertSync (cache, key, integrity, opts = {}) { - const { metadata, size } = opts - const bucket = bucketPath(cache, key) - const entry = { - key, - integrity: integrity && ssri.stringify(integrity), - time: Date.now(), - size, - metadata, - } - fixOwner.mkdirfix.sync(cache, path.dirname(bucket)) - const stringified = JSON.stringify(entry) - fs.appendFileSync(bucket, `\n${hashEntry(stringified)}\t${stringified}`) - try { - fixOwner.chownr.sync(cache, bucket) - } catch (err) { - if (err.code !== 'ENOENT') - throw err - } - return formatEntry(cache, entry) -} - -module.exports.find = find - -function find (cache, key) { - const bucket = bucketPath(cache, key) - return bucketEntries(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.find.sync = findSync - -function findSync (cache, key) { - const bucket = bucketPath(cache, key) - try { - return bucketEntriesSync(bucket).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 = {}) { - if (!opts.removeFully) - return insert(cache, key, null, opts) - - const bucket = bucketPath(cache, key) - return rimraf(bucket) -} - -module.exports.delete.sync = delSync - -function delSync (cache, key, opts = {}) { - if (!opts.removeFully) - return insertSync(cache, key, null, opts) - - const bucket = bucketPath(cache, key) - return rimraf.sync(bucket) -} - -module.exports.lsStream = lsStream - -function lsStream (cache) { - const indexDir = bucketDir(cache) - const stream = new Minipass({ objectMode: true }) - - readdirOrEmpty(indexDir).then(buckets => Promise.all( - buckets.map(bucket => { - const bucketPath = path.join(indexDir, bucket) - return readdirOrEmpty(bucketPath).then(subbuckets => Promise.all( - subbuckets.map(subbucket => { - const subbucketPath = path.join(bucketPath, subbucket) - - // "/cachename/<bucket 0xFF>/<bucket 0xFF>./*" - return readdirOrEmpty(subbucketPath).then(entries => Promise.all( - entries.map(entry => { - const entryPath = path.join(subbucketPath, entry) - return bucketEntries(entryPath).then(entries => - // using a Map here prevents duplicate keys from - // showing up twice, I guess? - entries.reduce((acc, entry) => { - acc.set(entry.key, entry) - return acc - }, new Map()) - ).then(reduced => { - // reduced is a map of key => entry - for (const entry of reduced.values()) { - const formatted = formatEntry(cache, entry) - if (formatted) - stream.write(formatted) - } - }).catch(err => { - if (err.code === 'ENOENT') - return undefined - throw err - }) - }) - )) - }) - )) - }) - )) - .then( - () => stream.end(), - err => stream.emit('error', err) - ) - - return stream -} - -module.exports.ls = ls - -function ls (cache) { - return lsStream(cache).collect().then(entries => - entries.reduce((acc, xs) => { - acc[xs.key] = xs - return acc - }, {}) - ) -} - -module.exports.bucketEntries = bucketEntries - -function bucketEntries (bucket, filter) { - return readFile(bucket, 'utf8').then((data) => _bucketEntries(data, filter)) -} - -module.exports.bucketEntries.sync = bucketEntriesSync - -function bucketEntriesSync (bucket, filter) { - const data = fs.readFileSync(bucket, 'utf8') - return _bucketEntries(data, filter) -} - -function _bucketEntries (data, filter) { - const 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, keepAll) { - // Treat null digests as deletions. They'll shadow any previous entries. - if (!entry.integrity && !keepAll) - return null - - return { - key: entry.key, - integrity: entry.integrity, - path: entry.integrity ? contentPath(cache, entry.integrity) : undefined, - size: entry.size, - time: entry.time, - metadata: entry.metadata, - } -} - -function readdirOrEmpty (dir) { - return readdir(dir).catch((err) => { - if (err.code === 'ENOENT' || err.code === 'ENOTDIR') - return [] - - throw err - }) -} |