git ssb

1
const IPFS = require('ipfs')
2
const crypto = require('crypto')
3
const RadixTree = require('../')
4
const cbor = require('borc')
5
const zlib = require('zlib')
6
7
// start ipfs
8
const node = new IPFS({
9
  start: false,
10
  repo: './ipfs-repo'
11
})
12
13
node.on('ready', async () => {
14
  const tree = new RadixTree({
15
    dag: node.dag,
16
    // root: { '/': 'zdpuArkpWFfw49S1tNLY26YNkHCoKt2CG7rJ6iCaqkcwsGqH7' }
17
  })
18
19
  const entries = 10000 //5117051
20
  console.log('entries', entries)
21
  for (let i = 0; i < entries; i++) {
22
    const key = crypto.createHash('sha256').update(i.toString()).digest().slice(0, 20)
23
    await tree.set(key, i)
24
  }
25
  console.log('flushing')
26
  const sr = await tree.flush()
27
  console.log('done', sr)
28
29
  let proofSize = 0
30
  let compressedSize = 0
31
32
  const gzip = zlib.createGzip()
33
  gzip.on('data', (data) => {
34
    compressedSize += data.length
35
  })
36
37
  const numOfKeys = 3
38
  for (let i = 0; i < numOfKeys; i++) {
39
    const key = crypto.createHash('sha256').update(i.toString()).digest().slice(0, 20)
40
    await tree.get(key)
41
  }
42
43
  const encoded = cbor.encode(tree.root)
44
  proofSize += encoded.length
45
46
  const promise = new Promise((resolve, reject) => {
47
    gzip.on('end', () => {
48
      resolve()
49
    })
50
  })
51
  gzip.end(encoded)
52
  await promise
53
  console.log('cbor size', proofSize)
54
  console.log('compressed size', compressedSize)
55
})
56
57
// if (i % 10000 === 0) {
58
//   console.log(i)
59
//   console.log(JSON.stringify(tree.root, null, 2))
60
//   try {
61
//     let start = new Date()
62
//     let hrstart = process.hrtime()
63
//     await tree.flush()
64
//     const end = new Date() - start
65
//     const hrend = process.hrtime(hrstart)
66
67
//     console.info('Execution time: %dms', end)
68
//     console.info('Execution time (hr): %ds %dms', hrend[0], hrend[1] / 1000000)
69
//     console.log(tree.root)
70
//     start = new Date()
71
//     hrstart = process.hrtime()
72
//   } catch (e) {
73
//     console.log(e)
74
//   }
75
// }
76