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'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 }