25 lines
704 B
Plaintext
25 lines
704 B
Plaintext
'use strict'
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const { Transform, pipeline } = require('stream')
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const build = require('../..')
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module.exports = function (threadStreamOpts) {
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const { opts = {} } = threadStreamOpts
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return build(function (source) {
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const transform = new Transform({
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objectMode: true,
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autoDestroy: true,
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transform (chunk, enc, cb) {
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chunk.service = 'from transform'
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chunk.level = `${source.levels.labels[chunk.level]}(${chunk.level})`
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chunk[source.messageKey] = chunk[source.messageKey].toUpperCase()
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cb(null, JSON.stringify(chunk) + '\n')
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}
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})
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pipeline(source, transform, () => {})
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return transform
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}, { ...opts, enablePipelining: true })
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}
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