70 lines
2.9 KiB
JavaScript
70 lines
2.9 KiB
JavaScript
const _ = require('lodash/fp')
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const NodeCache = require('node-cache')
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const base = require('../geth/base')
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const T = require('../../../time')
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const { BALANCE_FETCH_SPEED_MULTIPLIER } = require('../../../constants')
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const REGULAR_TX_POLLING = 5 * T.seconds
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const NAME = 'infura'
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function run (account) {
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if (!account.endpoint) throw new Error('Need to configure API endpoint for Infura')
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const endpoint = _.startsWith('https://')(account.endpoint)
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? account.endpoint : `https://${account.endpoint}`
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base.connect(endpoint)
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}
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const txsCache = new NodeCache({
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stdTTL: T.hour / 1000,
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checkperiod: T.minute / 1000,
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deleteOnExpire: true
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})
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function shouldGetStatus (tx) {
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const timePassedSinceTx = Date.now() - new Date(tx.created)
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const timePassedSinceReq = Date.now() - new Date(txsCache.get(tx.id).lastReqTime)
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// Allow for infura to gradually lower the amount of requests based on the time passed since the transaction
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// Until first 5 minutes - 1/2 regular polling speed
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// Until first 10 minutes - 1/4 regular polling speed
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// Until first hour - 1/8 polling speed
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// Until first two hours - 1/12 polling speed
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// Until first four hours - 1/16 polling speed
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// Until first day - 1/24 polling speed
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// After first day - 1/32 polling speed
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if (timePassedSinceTx < 5 * T.minutes) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 2 * REGULAR_TX_POLLING
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if (timePassedSinceTx < 10 * T.minutes) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 4 * REGULAR_TX_POLLING
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if (timePassedSinceTx < 1 * T.hour) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 8 * REGULAR_TX_POLLING
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if (timePassedSinceTx < 2 * T.hours) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 12 * REGULAR_TX_POLLING
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if (timePassedSinceTx < 4 * T.hours) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 16 * REGULAR_TX_POLLING
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if (timePassedSinceTx < 1 * T.day) return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 24 * REGULAR_TX_POLLING
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return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 32 * REGULAR_TX_POLLING
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}
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// Override geth's getStatus function to allow for different polling timing
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function getStatus (account, tx, requested, settings, operatorId) {
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if (_.isNil(txsCache.get(tx.id))) {
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txsCache.set(tx.id, { lastReqTime: Date.now() })
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}
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// return last available response
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if (!shouldGetStatus(tx)) {
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return Promise.resolve(txsCache.get(tx.id).res)
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}
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return base.getStatus(account, tx, requested, settings, operatorId)
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.then(res => {
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if (res.status === 'confirmed') {
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txsCache.del(tx.id) // Transaction reached final status, can trim it from the caching obj
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} else {
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txsCache.set(tx.id, { lastReqTime: Date.now(), res })
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txsCache.ttl(tx.id, T.hour / 1000)
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}
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return res
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})
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}
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module.exports = _.merge(base, { NAME, run, getStatus, fetchSpeed: BALANCE_FETCH_SPEED_MULTIPLIER.SLOW })
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