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86 lines
1.9 KiB
86 lines
1.9 KiB
'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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