v12.0.0 - initial commit

packages/server/lib/plugins/ticker/bitpay.js

@@ -0,0 +1,30 @@
+const axios = require('axios')
+const { COINS } = require('@lamassu/coins')
+
+const BN = require('../../bn')
+const { BTC, BCH, LN } = COINS
+
+const CRYPTO = [BTC, BCH, LN]
+const FIAT = 'ALL_CURRENCIES'
+
+function ticker(fiatCode, cryptoCode) {
+  return axios
+    .get('https://bitpay.com/rates/' + cryptoCode + '/' + fiatCode)
+    .then(r => {
+      const data = r.data.data
+      const price = new BN(data.rate.toString())
+      return {
+        rates: {
+          ask: price,
+          bid: price,
+        },
+      }
+    })
+}
+
+module.exports = {
+  ticker,
+  name: 'BitPay',
+  CRYPTO,
+  FIAT,
+}

packages/server/lib/plugins/ticker/ccxt.js

@@ -0,0 +1,77 @@
+const ccxt = require('ccxt')
+
+const BN = require('../../bn')
+const {
+  buildMarket,
+  verifyFiatSupport,
+  defaultFiatMarket,
+} = require('../common/ccxt')
+const { getRate } = require('../../../lib/forex')
+
+const RETRIES = 2
+
+const tickerObjects = {}
+
+// This is probably fixed on upstream ccxt
+// but we need to udpate node to get on the latest version
+const sanityCheckRates = (ask, bid, tickerName) => {
+  if (new BN(0).eq(ask) || new BN(0).eq(bid)) {
+    throw new Error(`Failure fetching rates for ${tickerName}`)
+  }
+}
+
+function ticker(fiatCode, cryptoCode, tickerName) {
+  if (!tickerObjects[tickerName]) {
+    tickerObjects[tickerName] = new ccxt[tickerName]({
+      timeout: 3000,
+      enableRateLimit: false,
+    })
+  }
+
+  const ticker = tickerObjects[tickerName]
+
+  if (verifyFiatSupport(fiatCode, tickerName)) {
+    return getCurrencyRates(ticker, fiatCode, cryptoCode)
+  }
+
+  return getRate(RETRIES, fiatCode, defaultFiatMarket(tickerName)).then(
+    ({ fxRate }) => {
+      try {
+        return getCurrencyRates(
+          ticker,
+          defaultFiatMarket(tickerName),
+          cryptoCode,
+        ).then(res => ({
+          rates: {
+            ask: res.rates.ask.times(fxRate),
+            bid: res.rates.bid.times(fxRate),
+          },
+        }))
+      } catch (e) {
+        return Promise.reject(e)
+      }
+    },
+  )
+}
+
+function getCurrencyRates(ticker, fiatCode, cryptoCode) {
+  try {
+    if (!ticker.has['fetchTicker']) {
+      throw new Error('Ticker not available')
+    }
+    const symbol = buildMarket(fiatCode, cryptoCode, ticker.id)
+    return ticker.fetchTicker(symbol).then(res => {
+      sanityCheckRates(res.ask, res.bid, cryptoCode)
+      return {
+        rates: {
+          ask: new BN(res.ask),
+          bid: new BN(res.bid),
+        },
+      }
+    })
+  } catch (e) {
+    return Promise.reject(e)
+  }
+}
+
+module.exports = { ticker }

packages/server/lib/plugins/ticker/mock-ticker.js

@@ -0,0 +1,12 @@
+const BN = require('../../bn')
+
+function ticker() {
+  return Promise.resolve({
+    rates: {
+      ask: new BN(100),
+      bid: new BN(95),
+    },
+  })
+}
+
+module.exports = { ticker }

packages/server/lib/plugins/ticker/pazuz-ticker/pazuz-ticker.js

@@ -0,0 +1,27 @@
+const https = require('https')
+const axios = require('axios').create({
+  // TODO: get rejectUnauthorized true to work
+  baseURL: `${process.env.TICKER_URL}/api/rates/`,
+  httpsAgent: new https.Agent({
+    rejectUnauthorized: false,
+  }),
+})
+
+const BN = require('../../../bn')
+
+function ticker(account, fiatCode, cryptoCode) {
+  return axios.get(`${cryptoCode}/${fiatCode}`).then(({ data }) => {
+    if (data.error) throw new Error(JSON.stringify(data.error))
+    return {
+      rates: {
+        ask: BN(data.ask),
+        bid: BN(data.bid),
+        signature: data.signature,
+      },
+    }
+  })
+}
+
+module.exports = {
+  ticker,
+}