I have an array of crypto coin IDs that I need to send in an API call to get data against each coin. How do I iterate it and send in API call?
The IDs array being stored:
const getIds = async () => {
Axios.get(
"https://api.coingecko.com/api/v3/coins/markets?vs_currency=usd&order=market_cap_desc&per_page=100&page=1&sparkline=false"
).then((response) =>
setCoinIds((coinIds) => [
...coinIds,
...response.data.map((res) => res.id),
])
);
};
The coin details API. The {coin_id} is where I need to iterate and send api calls against each ID.
export const getCoinsData = async () => {
try {
const response = await Axios.get(
"https://api.coingecko.com/api/v3/coins/${coin_id)"
);
return response.data;
} catch (e) {
console.log(e);
}
};
In the end, I need to store all coin data in a collective object:
const fetchCoinData = async () => {
setLoading(true);
const fetchedCoinData = await getCoinsData();
setData(fetchedCoinData);
setLoading(false);
};
Using CoinGeckoβs API recursively when on a free version is bit tricky. If you go through this API documentation , you will see a statement saying they have rate limit for their API calls.
Our Free API* has a rate limit of 50 calls/minute.
I have rewritten a working code to fetch all coins and get their IDs then recursively call CoinGecko's API for those ids with an interval of 3 sec between each API call, which makes our rate of calling 20 calls/minute.
Here is the code for the same :
Note - You can modify this to fit in with react to set state and all. Currently this can be run with node directly.
import axios from "axios";
const instance = axios.create({
baseURL: "https://api.coingecko.com/api/v3",
});
const delay = async (ms = 3000) => {
return new Promise((resolve) => setTimeout(resolve, ms));
};
let coinIds = [];
const getIds = async () => {
try {
const response = await instance.get(
"/coins/markets?vs_currency=usd&order=market_cap_desc&per_page=100&page=1&sparkline=false"
);
coinIds = [...coinIds, ...response.data.map((coin) => coin.id)];
console.log("π ~ file: apiCall.js ~ line 14 ~ getIds ~ coinIds", coinIds);
} catch (e) {
console.log("π ~ file: apiCall.js ~ line 17 ~ getIds ~ e", e.message);
}
};
const getCoinsData = async (coin_id) => {
console.log(
"π ~ file: apiCall.js ~ line 22 ~ getCoinsData ~ coin_id",
coin_id
);
try {
const response = await instance.get(`/coins/${coin_id}`);
return response.data;
} catch (e) {
console.log(
"π ~ file: apiCall.js ~ line 26 ~ getCoinsData ~ e",
e.message
);
}
};
const fetchCoinData = async () => {
try {
await getIds();
coinIds = coinIds.slice(0, 4);
// uncomment below to call API concurrently (if on paid version)
// const fetchedCoinData = await Promise.all(coinIds.map((coinId) => getCoinsData(coinId)))
// if on free version use this
const fetchedCoinData = await coinIds.reduce(
(acc, coinId) =>
acc.then(async () => {
await delay();
const coinData = await getCoinsData(coinId);
return coinData;
}),
Promise.resolve()
);
console.log(
"π ~ file: apiCall.js ~ line 33 ~ fetchCoinData ~ fetchedCoinData",
fetchedCoinData
);
} catch (e) {
console.log(
"π ~ file: apiCall.js ~ line 36 ~ fetchCoinData ~ e",
e.message
);
}
};
fetchCoinData();