General content-addressable cache system that maintains a filesystem registry of file data. 

Fast, fault-tolerant, cross-platform, disk-based, data-agnostic, content-addressable cache.

lukekarrys

fritzy

saquibkhan

npm-cli-ops

cacache

General content-addressable cache system that maintains a filesystem registry of file data.

zkat

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var checkSizeStream = require('../util/check-size-stream')

var checksumStream = require('../util/checksum-stream')

var fixOwner = require('../util/fix-owner')

var hasContent = require('./read').hasContent

var moveFile = require('../util/move-file')

var randomstring = require('randomstring')

var through = require('mississippi').through

function putStream (cache, inputStream, opts, _cb) {

  var tmpTarget = path.join(cache, 'tmp', (opts.tmpPrefix || '') + randomstring.generate())

  var cb = dezalgo(once(function (err, digest) {

  hasContent(cache, opts.digest, function (err, exists) {

    // Fast-path-shortcut this if it's already been written.

    pipeToTmp(inputStream, tmpTarget, opts, function (err, digest) {

      moveToDestination(tmpTarget, cache, digest, opts, function (err) {

function pipeToTmp (inputStream, tmpTarget, opts, cb) {

  fixOwner.mkdirfix(path.dirname(tmpTarget), opts.uid, opts.gid, function (err) {

    var hashStream = checksumStream(opts.digest, opts.hashAlgorithm)

    var sizeStream = opts.size !== undefined

    hashStream.on('digest', function (d) { digest = d })

    var outStream = fs.createWriteStream(tmpTarget)

    inputStream.on('data', function dataCheck () {

      inputStream.removeListener('data', dataCheck)

          var e = new Error('Input stream empty')

function moveToDestination (tmpTarget, cache, digest, opts, cb) {

  var destination = contentPath(cache, digest)

  var destDir = path.dirname(destination)

  fixOwner.mkdirfix(destDir, opts.uid, opts.gid, function (err) {

    move(tmpTarget, destination, function (err) {

    moveFile(tmpTarget, destination, function (err) {

      fixOwner.chownr(destination, opts.uid, opts.gid, cb)

  if (size == null) { throw new Error('size is required') }

  var stream = through(function (chunk, enc, next) {

      var err = new Error('stream data size mismatch')

    cb(size === found ? null : sizeError(size, found))

  var err = new Error('stream data size mismatch')

  "description": "General content-addressable cache system that maintains a filesystem registry of file data.",

    "postversion": "npm publish && git push --follow-tags",

  "repository": "https://github.com/zkat/cacache",

  "author": "Kat Marchán <kzm@sykosomatic.org>",

		@@ -8,3 +8,3 @@ var checkSizeStream = require('../util/check-size-stream')
		var hasContent = require('./read').hasContent
		var move = require('../util/move')
		var moveFile = require('../util/move-file')
		var once = require('once')
		@@ -89,3 +89,3 @@ var path = require('path')
		if (err) { return cb(err) }
		move(tmpTarget, destination, function (err) {
		moveFile(tmpTarget, destination, function (err) {
		if (err) { return cb(err) }
		@@ -92,0 +92,0 @@ fixOwner.chownr(destination, opts.uid, opts.gid, cb)

		@@ -5,2 +5,3 @@ var through = require('mississippi').through
		function checkSizeStream (size) {
		if (size == null) { throw new Error('size is required') }
		var found = 0
		@@ -11,13 +12,13 @@ var stream = through(function (chunk, enc, next) {
		}, function (cb) {
		if (size === found) {
		cb()
		} else {
		var err = new Error('stream data size mismatch')
		err.expected = size
		err.found = found
		err.code = 'EBADSIZE'
		return cb(err)
		}
		cb(size === found ? null : sizeError(size, found))
		})
		return stream
		}

		function sizeError (expected, found) {
		var err = new Error('stream data size mismatch')
		err.expected = expected
		err.found = found
		err.code = 'EBADSIZE'
		return err
		}

		{
		"name": "cacache",
		"version": "3.0.0",
		"version": "3.0.1",
		"description": "General content-addressable cache system that maintains a filesystem registry of file data.",
		@@ -5,0 +5,0 @@ "main": "index.js",

Fixed alerts

Improved metrics