tokenbridge/monitor/utils/getValidatorsList.js

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2020-11-04 14:24:42 +03:00
const { REWARDABLE_VALIDATORS_ABI, processValidatorsEvents } = require('../../commons')
const { getPastEvents } = require('./web3Cache')
const VALIDATORS_INDEXED_EVENTS_ABI = [
{
anonymous: false,
inputs: [
{
indexed: true,
name: 'validator',
type: 'address'
}
],
name: 'ValidatorRemoved',
type: 'event'
},
{
anonymous: false,
inputs: [
{
indexed: true,
name: 'validator',
type: 'address'
}
],
name: 'ValidatorAdded',
type: 'event'
},
{
anonymous: false,
inputs: [
{
indexed: true,
name: 'validator',
type: 'address'
},
{
indexed: true,
name: 'reward',
type: 'address'
}
],
name: 'ValidatorAdded',
type: 'event'
}
]
const tryCall = async (method, fallbackValue) => {
try {
return await method.call()
} catch (e) {
return fallbackValue
}
}
const getValidatorList = async (address, eth, options) => {
const { logger } = options
logger.debug('getting validatorList')
const validatorsContract = new eth.Contract(REWARDABLE_VALIDATORS_ABI, address) // in monitor, BRIDGE_VALIDATORS_ABI was used
const validators = await tryCall(validatorsContract.methods.validatorList(), [])
if (validators.length) {
return validators
}
logger.debug('getting validatorsEvents')
options.fromBlock = Number(await tryCall(validatorsContract.methods.deployedAtBlock(), 0))
const contract = new eth.Contract(VALIDATORS_INDEXED_EVENTS_ABI, address)
const validatorsEvents = [
...(await getPastEvents(contract, {
event: 'ValidatorAdded(address)',
...options
})),
...(await getPastEvents(contract, {
event: 'ValidatorAdded(address,address)',
...options
})),
...(await getPastEvents(contract, {
event: 'ValidatorRemoved(address)',
...options
}))
].sort((a, b) => a.blockNumber - b.blockNumber || a.transactionIndex - b.transactionIndex)
return processValidatorsEvents(validatorsEvents)
}
module.exports = {
getValidatorList
}