v12.0.0 - initial commit

packages/server/lib/plugins/wallet/infura/infura.js

@@ -0,0 +1,79 @@
+const _ = require('lodash/fp')
+const NodeCache = require('node-cache')
+const base = require('../geth/base')
+const T = require('../../../time')
+const { BALANCE_FETCH_SPEED_MULTIPLIER } = require('../../../constants')
+
+const NAME = 'infura'
+
+function run(account) {
+  if (!account.endpoint)
+    throw new Error('Need to configure API endpoint for Infura')
+
+  const endpoint = _.startsWith('https://')(account.endpoint)
+    ? account.endpoint
+    : `https://${account.endpoint}`
+
+  base.connect(endpoint)
+}
+
+const txsCache = new NodeCache({
+  stdTTL: T.hour / 1000,
+  checkperiod: T.minute / 1000,
+  deleteOnExpire: true,
+})
+
+function shouldGetStatus(tx) {
+  const timePassedSinceTx = Date.now() - new Date(tx.created)
+  const timePassedSinceReq =
+    Date.now() - new Date(txsCache.get(tx.id).lastReqTime)
+
+  if (timePassedSinceTx < 3 * T.minutes)
+    return (
+      _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 10 * T.seconds
+    )
+  if (timePassedSinceTx < 5 * T.minutes)
+    return (
+      _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 20 * T.seconds
+    )
+  if (timePassedSinceTx < 30 * T.minutes)
+    return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > T.minute
+  if (timePassedSinceTx < 1 * T.hour)
+    return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 2 * T.minute
+  if (timePassedSinceTx < 3 * T.hours)
+    return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > 5 * T.minute
+  if (timePassedSinceTx < 1 * T.day)
+    return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > T.hour
+  return _.isNil(txsCache.get(tx.id).res) || timePassedSinceReq > T.hour
+}
+
+// Override geth's getStatus function to allow for different polling timing
+function getStatus(account, tx, requested, settings, operatorId) {
+  if (_.isNil(txsCache.get(tx.id))) {
+    txsCache.set(tx.id, { lastReqTime: Date.now() })
+  }
+
+  // return last available response
+  if (!shouldGetStatus(tx)) {
+    return Promise.resolve(txsCache.get(tx.id).res)
+  }
+
+  return base
+    .getStatus(account, tx, requested, settings, operatorId)
+    .then(res => {
+      if (res.status === 'confirmed') {
+        txsCache.del(tx.id) // Transaction reached final status, can trim it from the caching obj
+      } else {
+        txsCache.set(tx.id, { lastReqTime: Date.now(), res })
+        txsCache.ttl(tx.id, T.hour / 1000)
+      }
+      return res
+    })
+}
+
+module.exports = _.merge(base, {
+  NAME,
+  run,
+  getStatus,
+  fetchSpeed: BALANCE_FETCH_SPEED_MULTIPLIER.SLOW,
+})