CODEWITHSUNDEEP
storageipfsnftjs-ipfs
wongx
wongx

Reputation: 11957

@ipld/car - carReader for large files (Content Addressed Archive)

I'm trying to create a reader from a .car file (Content Addressed Archive) using @ipld/car. The documentation shows how to create a carReader when files are small as per below:

import { CarReader } from '@ipld/car'

const inStream = fs.createReadStream('example.car');
// read and parse the entire stream in one go, this will cache the contents of
// the car in memory so is not suitable for large files.
const reader = await CarReader.fromIterable(inStream);

Source

Question: If I have a file at C:\output.car, and it's say 10GB and larger than my available RAM, how can I create a reader for this large .car file?

I think it should be one of these methods, but there's no sample code on how to use it...

import { CarBlockIterator } from '@ipld/car/iterator';
// or
import { CarCIDIterator } from '@ipld/car/iterator';

Source

Upvotes: 0

Views: 212

Answers (1)

wongx
wongx

Reputation: 11957

Figured it out. This works:

import { CarIndexedReader } from '@ipld/car';

const filename = "C:\output.car"
const carReader = await CarIndexedReader.fromFile(filename);

Upvotes: 1

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