mec/src/utils/connectUserData.js

This package helps to create multi-layer chains upon Ethereum Network. Also it provides easy to use nodejs API to any of consortium network and helps to manage all of them at the same time

const      k = require('../appStructure/keyElements.js').keyElements,
  ethereumtx = require('ethereumjs-tx'),
      abitor = require('ethereumjs-abi'),
         adr = '0x3d41d04f27efe6e837dce30f3412f98c9ade47ef', // for testing in kovan network
      prvkey = '0x10d15544a7574be02706b40172b6caed48ac8de21bfd96c6c9e32bd9e0e47727';

class Getter {
  constructor() {
    this.co = k.setup.Getter;
  }

  setNode(name, address) {
    return new Promise((resolve,reject)=>{

      this.transact(this.genTx(name,address))
      .then(log => { resolve(true); })
      .catch(err => { reject(err); })

    })
  }

  genTx(name, url) {
    const method = co.methods.setUserNode(name, url).encodeABI(),
              tx = {
                from: adr,
                to: this.co._address,
                gasPrice: "20000000000",
                gas: "3000000",
                value: '0',
                data: method
              }
    k.infura.eth.accounts.signTransaction(tx, prvkey).then(signed => {
      return signed.rawTransaction;
    });
  }

  transact(raw) {
    return new Promise((resolve,reject)=>{
      k.infura.eth.sendSignedTransaction(raw)
      .on('confirmation', console.log)
      .on('transactionHash', console.log)
      .on('receipt', log => { resolve(log) })
      .on('error', err => { rejet(err) })
    })
  }
}

module.exports = {
  Getter
}