tokenbridge/monitor/stuckTransfers.js
Przemyslaw Rzad 5efc9a6688
Update bridge monitor (#38)
* Removed duplicate licence, updated links do Contributing and Licence in sub-readme.

* Renamed bridge-monitor to monitor.

* Removed package-lock.json.

* Added monitor workspace with linting.

* Consistent eslint version.

* Added readme for merging.
2019-05-14 09:17:03 +02:00

110 lines
2.6 KiB
JavaScript

require('dotenv').config()
const Web3 = require('web3')
const logger = require('./logger')('stuckTransfers.js')
const { FOREIGN_RPC_URL, FOREIGN_BRIDGE_ADDRESS, ERC20_ADDRESS } = process.env
const FOREIGN_DEPLOYMENT_BLOCK = Number(process.env.FOREIGN_DEPLOYMENT_BLOCK) || 0
const foreignProvider = new Web3.providers.HttpProvider(FOREIGN_RPC_URL)
const web3Foreign = new Web3(foreignProvider)
const ABITransferWithoutData = [
{
anonymous: false,
inputs: [
{
indexed: true,
name: 'from',
type: 'address'
},
{
indexed: true,
name: 'to',
type: 'address'
},
{
indexed: false,
name: 'value',
type: 'uint256'
}
],
name: 'Transfer',
type: 'event'
}
]
const ABIWithData = [
{
anonymous: false,
inputs: [
{
indexed: true,
name: 'from',
type: 'address'
},
{
indexed: true,
name: 'to',
type: 'address'
},
{
indexed: false,
name: 'value',
type: 'uint256'
},
{
indexed: false,
name: 'data',
type: 'bytes'
}
],
name: 'Transfer',
type: 'event'
}
]
function compareTransfers(transfersNormal) {
return withData => {
return (
transfersNormal.filter(normal => {
return normal.transactionHash === withData.transactionHash
}).length === 0
)
}
}
async function main() {
try {
// TODO: ERC20_ADDRESS is no longer an env constant. It has to be extracted from the ForeignBridge Contract.
const tokenContract = new web3Foreign.eth.Contract(ABITransferWithoutData, ERC20_ADDRESS)
const tokenContractWithData = new web3Foreign.eth.Contract(ABIWithData, ERC20_ADDRESS)
logger.debug('calling tokenContract.getPastEvents Transfer')
const transfersNormal = await tokenContract.getPastEvents('Transfer', {
filter: {
to: FOREIGN_BRIDGE_ADDRESS
},
fromBlock: FOREIGN_DEPLOYMENT_BLOCK,
toBlock: 'latest'
})
logger.debug('calling tokenContractWithData.getPastEvents Transfer')
const transfersWithData = await tokenContractWithData.getPastEvents('Transfer', {
filter: {
to: FOREIGN_BRIDGE_ADDRESS
},
fromBlock: FOREIGN_DEPLOYMENT_BLOCK,
toBlock: 'latest'
})
const stuckTransfers = transfersNormal.filter(compareTransfers(transfersWithData))
logger.debug('Done')
return {
stuckTransfers,
total: stuckTransfers.length,
lastChecked: Math.floor(Date.now() / 1000)
}
} catch (e) {
logger.error(e)
throw e
}
}
module.exports = main