lamassu-server/lib/plugins/common/json-rpc.js
2021-10-05 22:27:09 +01:00

80 lines
1.9 KiB
JavaScript

// JSON-RPC for bitcoind-like interfaces
const axios = require('axios')
const uuid = require('uuid')
const fs = require('fs')
const _ = require('lodash/fp')
const coinUtils = require('../../coin-utils')
module.exports = { fetch, parseConf, rpcConfig }
function fetch (account = {}, method, params) {
params = _.defaultTo([], params)
return Promise.resolve(true)
.then(() => {
const data = {
method,
params,
id: uuid.v4()
}
if (_.isNil(account.port)) throw new Error('port attribute required for jsonRpc')
const url = _.defaultTo(`http://localhost:${account.port}`, account.url)
return axios({
method: 'post',
auth: {username: account.username, password: account.password},
url,
data
})
})
.then(r => {
if (r.error) throw r.error
return r.data.result
})
.catch(err => {
throw new Error(_.join(' ', [
'json-rpc::axios error:',
JSON.stringify(_.get('message', err, '')),
JSON.stringify(_.get('response.data.error', err, ''))
]))
})
}
function split (str) {
const i = str.indexOf('=')
if (i === -1) return []
return [str.slice(0, i), str.slice(i + 1)]
}
function parseConf (confPath) {
const conf = fs.readFileSync(confPath)
const lines = conf.toString().split('\n')
const res = {}
for (let i = 0; i < lines.length; i++) {
const keyVal = split(lines[i])
// skip when value is empty
if (!keyVal[1]) continue
res[keyVal[0]] = keyVal[1]
}
return res
}
function rpcConfig (cryptoRec) {
try {
const configPath = coinUtils.configPath(cryptoRec)
const config = parseConf(configPath)
return {
username: config.rpcuser,
password: config.rpcpassword,
port: config.rpcport || cryptoRec.defaultPort
}
} catch (err) {
throw new Error('Wallet is currently not installed')
}
}