@dasch-swiss/dsp-js/src/api/operators/retryOnError.js

JavaScript library that handles API requests to Knora

import { retry, timer } from "rxjs";
/**
 *
 * Retries failed HTTP requests.
 *
 * @param delayMs delay in milliseconds before the request is retried.
 * @param maxRetries maximum number of retries.
 * @param retryOnErrorStatus HTTP error status codes for which the request is retried.
 * @param logError if true, error is written to the console error log.
 *
 * @category Internal
 */
export function retryOnError(delayMs, maxRetries, retryOnErrorStatus, logError) {
    var retries = maxRetries;
    // inspired by https://medium.com/angular-in-depth/retry-failed-http-requests-in-angular-f5959d486294
    return function (src) {
        return src.pipe(retry({
            count: maxRetries,
            delay: function (error, retryCount) {
                if (retryOnErrorStatus.indexOf(error.status) !== -1) {
                    if (logError)
                        console.error("HTTP request failed:", "status:", error.status, "retries:", retryCount, "error:", error);
                    return timer(delayMs);
                }
                else {
                    throw error;
                }
            }
        }));
    };
}
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