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87 lines
1.9 KiB
87 lines
1.9 KiB
4 years ago
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'use strict'
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const figgyPudding = require('figgy-pudding')
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const index = require('./lib/entry-index')
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const memo = require('./lib/memoization')
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const write = require('./lib/content/write')
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const to = require('mississippi').to
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const PutOpts = figgyPudding({
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algorithms: {
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default: ['sha512']
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},
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integrity: {},
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memoize: {},
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metadata: {},
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pickAlgorithm: {},
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size: {},
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tmpPrefix: {},
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single: {},
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sep: {},
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error: {},
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strict: {}
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})
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module.exports = putData
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function putData (cache, key, data, opts) {
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opts = PutOpts(opts)
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return write(cache, data, opts).then(res => {
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return index.insert(
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cache, key, res.integrity, opts.concat({ size: res.size })
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).then(entry => {
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if (opts.memoize) {
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memo.put(cache, entry, data, opts)
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}
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return res.integrity
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})
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})
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}
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module.exports.stream = putStream
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function putStream (cache, key, opts) {
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opts = PutOpts(opts)
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let integrity
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let size
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const contentStream = write.stream(
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cache, opts
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).on('integrity', int => {
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integrity = int
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}).on('size', s => {
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size = s
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})
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let memoData
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let memoTotal = 0
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const stream = to((chunk, enc, cb) => {
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contentStream.write(chunk, enc, () => {
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if (opts.memoize) {
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if (!memoData) { memoData = [] }
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memoData.push(chunk)
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memoTotal += chunk.length
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}
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cb()
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})
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}, cb => {
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contentStream.end(() => {
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index.insert(cache, key, integrity, opts.concat({ size })).then(entry => {
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if (opts.memoize) {
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memo.put(cache, entry, Buffer.concat(memoData, memoTotal), opts)
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}
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stream.emit('integrity', integrity)
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cb()
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})
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})
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})
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let erred = false
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stream.once('error', err => {
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if (erred) { return }
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erred = true
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contentStream.emit('error', err)
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})
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contentStream.once('error', err => {
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if (erred) { return }
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erred = true
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stream.emit('error', err)
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})
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return stream
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}
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