80 lines
1.9 KiB
JavaScript
Executable file
80 lines
1.9 KiB
JavaScript
Executable file
'use strict'
|
|
|
|
const index = require('./entry-index')
|
|
const memo = require('./memoization')
|
|
const write = require('./content/write')
|
|
const Flush = require('minipass-flush')
|
|
const { PassThrough } = require('minipass-collect')
|
|
const Pipeline = require('minipass-pipeline')
|
|
|
|
const putOpts = (opts) => ({
|
|
algorithms: ['sha512'],
|
|
...opts,
|
|
})
|
|
|
|
module.exports = putData
|
|
|
|
async function putData (cache, key, data, opts = {}) {
|
|
const { memoize } = opts
|
|
opts = putOpts(opts)
|
|
const res = await write(cache, data, opts)
|
|
const entry = await index.insert(cache, key, res.integrity, { ...opts, size: res.size })
|
|
if (memoize) {
|
|
memo.put(cache, entry, data, opts)
|
|
}
|
|
|
|
return res.integrity
|
|
}
|
|
|
|
module.exports.stream = putStream
|
|
|
|
function putStream (cache, key, opts = {}) {
|
|
const { memoize } = opts
|
|
opts = putOpts(opts)
|
|
let integrity
|
|
let size
|
|
let error
|
|
|
|
let memoData
|
|
const pipeline = new Pipeline()
|
|
// first item in the pipeline is the memoizer, because we need
|
|
// that to end first and get the collected data.
|
|
if (memoize) {
|
|
const memoizer = new PassThrough().on('collect', data => {
|
|
memoData = data
|
|
})
|
|
pipeline.push(memoizer)
|
|
}
|
|
|
|
// contentStream is a write-only, not a passthrough
|
|
// no data comes out of it.
|
|
const contentStream = write.stream(cache, opts)
|
|
.on('integrity', (int) => {
|
|
integrity = int
|
|
})
|
|
.on('size', (s) => {
|
|
size = s
|
|
})
|
|
.on('error', (err) => {
|
|
error = err
|
|
})
|
|
|
|
pipeline.push(contentStream)
|
|
|
|
// last but not least, we write the index and emit hash and size,
|
|
// and memoize if we're doing that
|
|
pipeline.push(new Flush({
|
|
async flush () {
|
|
if (!error) {
|
|
const entry = await index.insert(cache, key, integrity, { ...opts, size })
|
|
if (memoize && memoData) {
|
|
memo.put(cache, entry, memoData, opts)
|
|
}
|
|
pipeline.emit('integrity', integrity)
|
|
pipeline.emit('size', size)
|
|
}
|
|
},
|
|
}))
|
|
|
|
return pipeline
|
|
}
|