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Add concurrent requests limit #35

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merged 1 commit into from
Jul 9, 2024
Merged

Add concurrent requests limit #35

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65 changes: 45 additions & 20 deletions hooks/useRequest.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,9 @@
import { useState, useEffect, useContext, useCallback } from 'react';
import { DataContext } from '../contexts/data';

let runningRequests: number = 0;
const MAX_CONCURRENT_REQUESTS = 4;

const fetcher = (url: string) => fetch(url).then((res) => res.json());

export function useRequest(url: string, defaultValue: any, key?: string, dontRefetch?: boolean) {
Expand All @@ -9,26 +12,48 @@ export function useRequest(url: string, defaultValue: any, key?: string, dontRef
const dataContext = useContext(DataContext);

const init = useCallback(async () => {
setLoading(true);
const data = await fetcher(`${process.env.NEXT_PUBLIC_DAT_URL}/${url}`);
const dataFromKey = key ? data[key] : data?.table_data || data?.chart_data || data;
setData(
dataFromKey.filter
? dataFromKey.filter((line: any) => {
if (!line.time) {
return true;
}
if (dataContext.dates.from && new Date(line.time) < new Date(dataContext.dates.from)) {
return false;
}
if (dataContext.dates.to && new Date(line.time) > new Date(dataContext.dates.to)) {
return false;
}
return true;
})
: dataFromKey
);
setLoading(false);
const request = async () => {
if (runningRequests > MAX_CONCURRENT_REQUESTS) {
setTimeout(() => {
request();
}, 500);
return;
}

runningRequests++;
setLoading(true);
try {
const data = await fetcher(`${process.env.NEXT_PUBLIC_DAT_URL}/${url}`);
runningRequests--;

const dataFromKey = key ? data[key] : data?.table_data || data?.chart_data || data;
setData(
dataFromKey.filter
? dataFromKey.filter((line: any) => {
if (!line.time) {
return true;
}
if (
dataContext.dates.from &&
new Date(line.time) < new Date(dataContext.dates.from)
) {
return false;
}
if (dataContext.dates.to && new Date(line.time) > new Date(dataContext.dates.to)) {
return false;
}
return true;
})
: dataFromKey
);
setLoading(false);
} catch (e) {
console.log(e);
runningRequests--;
}
};

request();
}, [dataContext.dates.from, dataContext.dates.to, key, url]);

useEffect(() => {
Expand Down