45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
import { timeoutPromise } from './timeoutPromise';
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/**
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* The number of milliseconds before deciding that we need retry a fetch request.
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*
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* @type {number}
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*/
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const RETRY_TIMEOUT = 3000;
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/**
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* Wrapper around fetch GET requests to handle json-ifying the response
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* and logging errors.
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*
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* @param {string} url - The URL to perform a GET against.
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* @param {?boolean} retry - Whether the request will be retried after short timeout.
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* @returns {Promise<Object>} The response body, in JSON format, will be
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* through the Promise.
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*/
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export function doGetJSON(url, retry) {
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const fetchPromise = fetch(url)
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.then(response => {
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const jsonify = response.json();
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if (response.ok) {
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return jsonify;
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}
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return jsonify
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.then(result => Promise.reject(result));
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});
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if (retry) {
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return timeoutPromise(fetchPromise, RETRY_TIMEOUT)
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.catch(response => {
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if (response.status >= 400 && response.status < 500) {
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return Promise.reject(response);
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}
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return timeoutPromise(fetchPromise, RETRY_TIMEOUT);
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});
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}
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return fetchPromise;
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}
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