orbit-db/examples/eventlog.js

'use strict'

const IpfsDaemon = require('ipfs-daemon')
const OrbitDB = require('../src/OrbitDB')

const userId = Math.floor(Math.random() * 100)
const conf = { 
  IpfsDataDir: '/tmp/' + userId,
  Addresses: {
    API: '/ip4/127.0.0.1/tcp/0',
    Swarm: ['/ip4/0.0.0.0/tcp/0'],
    Gateway: '/ip4/0.0.0.0/tcp/0'
  },
}

IpfsDaemon(conf)
  .then((res) => {
    const orbitdb = new OrbitDB(res.ipfs)
    const db = orbitdb.eventlog("|orbit-db|examples|eventlog-example")

    const creatures = ['🐙', '🐷', '🐬', '🐞', '🐈', '🙉', '🐸', '🐓']

    const query = () => {
      const index = Math.floor(Math.random() * creatures.length)
      db.add({ avatar: creatures[index], userId: userId })
        .then(() => {
          const latest = db.iterator({ limit: 5 }).collect()
          let output = ``
          output += `--------------------\n`
          output += `Latest Visitors\n`
          output += `--------------------\n`
          output += latest.reverse().map((e) => e.payload.value.avatar + "  (userId: " + e.payload.value.userId + ")").join('\n') + `\n`
          console.log(output)          
        })
        .catch((e) => {
          console.error(e.stack)
        })
    }

    setInterval(query, 1000)
  })
  .catch((err) => console.error(err))