Here is my code:
const timer = ms => new Promise(resolve => setTimeout(resolve, ms));
const createThrottler = (limitHeader) => {
let requestTimestamp = 0;
let rateLimit = 0;
return (requestHandler) => {
return async (...params) => {
const currentTimestamp = Number(Date.now());
if (currentTimestamp < requestTimestamp + rateLimit) {
const timeOut = rateLimit - (currentTimestamp - requestTimestamp);
requestTimestamp = Number(Date.now()) + timeOut;
await timer(timeOut)
}
requestTimestamp = Number(Date.now());
const response = await requestHandler(...params);
if (!rateLimit > 0) {
rateLimit = Math.floor((60 / response.headers.get(limitHeader)) * 1000);
}
console.log(limitHeader);
console.log(rateLimit);
return response;
}
}
}
const throttle = createThrottler("X-***-Ratelimit");
const throttleFetch = throttle(fetch);
function getRelease(idFiltered) {
return throttleFetch(`https://api.***.com/releases/${idFiltered}`, {
headers: {
'User-Agent': '***/0.1',
},
}).then(response => response.json())
.then(data => {
if (data.message === 'Release not found.') {
return { error: `Release with ID ${idFiltered} does not exist` };
} else {
const id = data.id;
const delimiter = document.getElementById("delimiter").value || "|";
const artists = data.artists ? data.artists.map(artist => artist.name) : [];
const barcode = data.identifiers.filter(id => id.type === 'Barcode')
.map(barcode => barcode.value);
var formattedBarcode = barcode.join(delimiter);
const country = data.country || 'Unknown';
const genres = data.genres || [];
const formattedGenres = genres.join(delimiter);
const labels = data.labels ? data.labels.map(label => label.name) : [];
const formattedLabels = labels.join(delimiter);
const catno = data.labels ? data.labels.map(catno => catno.catno) : [];
const formattedCatNo = catno.join(delimiter);
const styles = data.styles || [];
const formattedStyles = styles.join(delimiter);
const tracklist = data.tracklist ? data.tracklist
.map(track => track.title) : [];
const formattedTracklist = tracklist.join(delimiter);
const year = data.year || 'Unknown';
const format = data.formats ? data.formats.map(format => format.name) : [];
const qty = data.formats ? data.formats.map(format => format.qty) : [];
const descriptions = data.formats ? data.formats
.map(descriptions => descriptions.descriptions) : [];
const preformattedDescriptions = descriptions.toString()
.replace('"', '""').replace(/,/g, ', ');
const formattedDescriptions = '"' + preformattedDescriptions + '"';
console.log(idFiltered,
artists,
format,
qty,
formattedDescriptions,
formattedLabels,
formattedCatNo,
country,
year,
formattedGenres,
formattedStyles,
formattedBarcode,
formattedTracklist
)
return [idFiltered,
artists,
format,
qty,
formattedDescriptions,
formattedLabels,
formattedCatNo,
country,
year,
formattedGenres,
formattedStyles,
formattedBarcode,
formattedTracklist
];
}
});
}
But the “X-***-Ratelimit” header is clearly not being read correctly, as when I do
console.log(limitHeader);
console.log(rateLimit);
I initially get back
object
and thereafter
X-***-Ratelimit
Infinity
From the host’s documentation:
We attach the following headers to responses to help you track your rate limit use:
X-***-Ratelimit: The total number of requests you can make in a one minute window.
X-***-Ratelimit-Used : The number of requests you’ve made in your existing rate limit window.
X-***-Ratelimit-Remaining: The number of remaining requests you are able to make in the existing rate limit window.
Any help please? TIA.
