Filecoin Liftoff

blocks-in-ipfs.js

import * as Block from 'multiformats/block'
import { sha256 as hasher } from 'multiformats/hashes/sha2'
import * as codec from '@ipld/dag-cbor'
import { CID } from 'multiformats'

let value = { hello: 'world' }
let hello = await Block.encode({ value, codec, hasher })

let bbbb = await Block.encode({ value: { foo: hello.cid }, codec, hasher })

let cccc = await Block.encode({ value: { bar: hello.cid, prop: 31337 }, codec, hasher })

let dddd = await Block.encode({ value: { one: bbbb.cid, two: cccc.cid }, codec, hasher })

const putBlock = async (ipfs, block) => {
  const opts = { cid: block.cid.toString() }
  await ipfs.block.put(block.bytes, opts)
  return true
}

const getBlock = async (ipfs, cid) => {
  const { data } = await ipfs.block.get(cid.toString())
  return Block.create({ bytes: data, cid, codec, hasher })
}

blocks.js

import * as Block from 'multiformats/block'
import { sha256 as hasher } from 'multiformats/hashes/sha2'
import * as codec from '@ipld/dag-cbor'
import { CID } from 'multiformats'

let value = { hello: 'world' }
let hello = await Block.encode({ value, codec, hasher })

// hello.bytes - encoded binary data
// hello.cid - CID address

let bbbb = await Block.encode({ value: { foo: hello.cid }, codec, hasher })

let cccc = await Block.encode({ value: { bar: hello.cid, prop: 31337 }, codec, hasher })

let dddd = await Block.encode({ value: { one: bbbb.cid, two: cccc.cid }, codec, hasher })