I'm new to Node so I'm struggling with this. The script runs as if its "skipping" the bitx.getTicker function inside the while loop. I did some research on asynchronous functions in Node and I just cant seem to get it working on my code. I'm trying to write a crypto-bot with bitx. I tried the .then() method as well and it just keeps on "skipping" the bitx.getTicker function. If I remove the async(from line 1), let tick = await``(from line 5) and the while``` loop it works as intended but just once. I need it to run constantly to check new asking price so once wont work. Thanks in advance.
async function get_ticker(){
let BitX = require('../lib/BitX')
while(true){
let bitx = new BitX(key, secret)
let tick = await bitx.getTicker(function (err, ticker) {
// sends ticker object to another function to get values
get_info(ticker)
})
console.log(i)
i = i + 1
}
}
UPDATE I used a promise and I see it pending but I cant access the ticker variable inside the bitx.getTicker function. How can I access it?
function get_ticker() {
let BitX = require('../lib/BitX')
const promise = new Promise((resolve, reject) => {
let bitx = new BitX(key, secret)
bitx.getTicker(function (err, ticker) {
resolve(ticker)
})
})
return promise.resolve
}
var result = get_ticker()
console.log(result)
It seems like your BitX library doesn't have a promise interface but is callback-based, so you need to promisify it:
const { promisify } = require('util')
async function get_ticker(){
let BitX = require('../lib/BitX')
while(true){
let bitx = new BitX(key, secret)
let tick = await promisify(bitx.getTicker).call(bitx)
get_info(tick)
console.log(i)
i = i + 1
}
}
It would be more performant to create the client only once though:
const { promisify } = require('util')
const BitX = require('../lib/BitX')
const bitx = new BitX(key, secret)
const getBitxTicker = promisify(bitx.getTicker).bind(bitx)
async function get_ticker(){
while(true){
const tick = await getBitxTicker()
get_info(tick)
console.log(i)
i = i + 1
}
}
(Note that I used bind instead of call now for binding the bitx instance, because we don't immediately call it now.)
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