Comments (1)
I got this working without the cluster function finally. It could be better optimised but seems to work well for our needs. This is the code if it helps anyone (I am using fast-csv for the CSV formatting):
let counter = 0
etl.file(FILE_IN)
.pipe(etl.csv())
.pipe(etl.collect(PARALLEL))
.pipe(etl.map(async function(docs) {
await Promise.all(docs.map(async (doc) => {
const { id, params } = doc
res = await myapi.call(params)
counter++
if (counter % LOG_EVERY === 0) console.log(`${counter} rows processed`)
this.push(_.extend({ id }, res[0]))
}))
}))
.pipe(csv.format({ headers: true }))
.pipe(etl.toFile(FILE_OUT))
.promise()
.then(() => {
console.log('done')
})
.catch(e => {
console.error(e)
})
from node-etl.
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from node-etl.