tokenbridge/monitor/getBalances.js
2019-07-12 14:49:46 +02:00

128 lines
5.0 KiB
JavaScript

require('dotenv').config()
const BN = require('bignumber.js')
const Web3 = require('web3')
const logger = require('./logger')('getBalances')
const { BRIDGE_MODES } = require('../commons')
const Web3Utils = Web3.utils
const { HOME_RPC_URL, FOREIGN_RPC_URL, HOME_BRIDGE_ADDRESS, FOREIGN_BRIDGE_ADDRESS } = process.env
const homeProvider = new Web3.providers.HttpProvider(HOME_RPC_URL)
const web3Home = new Web3(homeProvider)
const foreignProvider = new Web3.providers.HttpProvider(FOREIGN_RPC_URL)
const web3Foreign = new Web3(foreignProvider)
const {
ERC20_ABI,
ERC677_ABI,
BLOCK_REWARD_ABI,
HOME_ERC_TO_ERC_ABI,
HOME_ERC_TO_NATIVE_ABI,
FOREIGN_ERC_TO_ERC_ABI,
FOREIGN_ERC_TO_NATIVE_ABI,
FOREIGN_NATIVE_TO_ERC_ABI
} = require('../commons')
async function main(bridgeMode) {
if (bridgeMode === BRIDGE_MODES.ERC_TO_ERC) {
const foreignBridge = new web3Foreign.eth.Contract(
FOREIGN_ERC_TO_ERC_ABI,
FOREIGN_BRIDGE_ADDRESS
)
const erc20Address = await foreignBridge.methods.erc20token().call()
const erc20Contract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
logger.debug('calling erc20Contract.methods.balanceOf')
const foreignErc20Balance = await erc20Contract.methods.balanceOf(FOREIGN_BRIDGE_ADDRESS).call()
const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_ERC_ABI, HOME_BRIDGE_ADDRESS)
logger.debug('calling homeBridge.methods.erc677token')
const tokenAddress = await homeBridge.methods.erc677token().call()
const tokenContract = new web3Home.eth.Contract(ERC677_ABI, tokenAddress)
logger.debug('calling tokenContract.methods.totalSupply()')
const totalSupply = await tokenContract.methods.totalSupply().call()
const foreignBalanceBN = new BN(foreignErc20Balance)
const foreignTotalSupplyBN = new BN(totalSupply)
const diff = foreignBalanceBN.minus(foreignTotalSupplyBN).toString(10)
logger.debug('Done')
return {
home: {
totalSupply: Web3Utils.fromWei(totalSupply)
},
foreign: {
erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
},
balanceDiff: Number(Web3Utils.fromWei(diff)),
lastChecked: Math.floor(Date.now() / 1000)
}
} else if (
bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC ||
bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC_V1
) {
logger.debug('calling web3Home.eth.getBalance')
const foreignBridge = new web3Foreign.eth.Contract(
FOREIGN_NATIVE_TO_ERC_ABI,
FOREIGN_BRIDGE_ADDRESS
)
const erc20Address = await foreignBridge.methods.erc677token().call()
const homeBalance = await web3Home.eth.getBalance(HOME_BRIDGE_ADDRESS)
const tokenContract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
logger.debug('calling tokenContract.methods.totalSupply()')
const totalSupply = await tokenContract.methods.totalSupply().call()
const homeBalanceBN = new BN(homeBalance)
const foreignTotalSupplyBN = new BN(totalSupply)
const diff = homeBalanceBN.minus(foreignTotalSupplyBN).toString(10)
logger.debug('Done')
return {
home: {
balance: Web3Utils.fromWei(homeBalance)
},
foreign: {
totalSupply: Web3Utils.fromWei(totalSupply)
},
balanceDiff: Number(Web3Utils.fromWei(diff)),
lastChecked: Math.floor(Date.now() / 1000)
}
} else if (bridgeMode === BRIDGE_MODES.ERC_TO_NATIVE) {
const foreignBridge = new web3Foreign.eth.Contract(
FOREIGN_ERC_TO_NATIVE_ABI,
FOREIGN_BRIDGE_ADDRESS
)
const erc20Address = await foreignBridge.methods.erc20token().call()
const erc20Contract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
logger.debug('calling erc20Contract.methods.balanceOf')
const foreignErc20Balance = await erc20Contract.methods.balanceOf(FOREIGN_BRIDGE_ADDRESS).call()
const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_NATIVE_ABI, HOME_BRIDGE_ADDRESS)
logger.debug('calling homeBridge.methods.blockRewardContract')
const blockRewardAddress = await homeBridge.methods.blockRewardContract().call()
const blockRewardContract = new web3Home.eth.Contract(BLOCK_REWARD_ABI, blockRewardAddress)
logger.debug('calling blockReward.methods.mintedTotally')
const mintedCoins = await blockRewardContract.methods.mintedTotally().call()
logger.debug('calling homeBridge.methods.totalBurntCoins')
const burntCoins = await homeBridge.methods.totalBurntCoins().call()
const mintedCoinsBN = new BN(mintedCoins)
const burntCoinsBN = new BN(burntCoins)
const totalSupplyBN = mintedCoinsBN.minus(burntCoinsBN)
const foreignErc20BalanceBN = new BN(foreignErc20Balance)
const diff = foreignErc20BalanceBN.minus(totalSupplyBN).toFixed()
logger.debug('Done')
return {
home: {
totalSupply: Web3Utils.fromWei(totalSupplyBN.toFixed())
},
foreign: {
erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
},
balanceDiff: Number(Web3Utils.fromWei(diff)),
lastChecked: Math.floor(Date.now() / 1000)
}
} else {
throw new Error(`Unrecognized bridge mode: '${bridgeMode}'`)
}
}
module.exports = main