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Текущая директория: /opt/BitGoJS/modules/express/dist
Просмотр файла: retryPromise.js

"use strict";
/**
 * Thrown in `retryPromise()`
 *
 * @prettier
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.ErrorMaxRetriesExceededError = void 0;
exports.retryPromise = retryPromise;
class ErrorMaxRetriesExceededError extends Error {
    constructor(maxTries) {
        super(`giving up after reaching max retry limit of ${maxTries}`);
    }
}
exports.ErrorMaxRetriesExceededError = ErrorMaxRetriesExceededError;
/**
 * Retries a promise (like a request) if it returns with 'ECONNREFUSED'. Retries are delayed with an exponential backoff.
 * @param {Function} func - Promise to execute. When it throws an error, it is called and passed to onError
 * @param {Function} onError - Error handler. Called with error as argument.
 *                             If an error should not be retried, the handler should re-throw the passed error.
 * @param params
 * @param {Number}   params.retryLimit - the maximum number of retries to attempt before giving up.
 */
async function retryPromise(func, onError = () => ({}), params = { retryLimit: 3 }) {
    let tryCount = 0;
    while (tryCount < params.retryLimit) {
        tryCount += 1;
        try {
            return await func();
        }
        catch (err) {
            if (err.code === 'ECONNREFUSED') {
                onError(err, tryCount);
            }
            else {
                throw new Error(err);
            }
        }
        // if we are going to make another attempt, delay first with exponential backoff
        if (tryCount < params.retryLimit) {
            const secondsToWait = 2 ** (tryCount - 1) + Math.random();
            await new Promise((res) => setTimeout(res, Math.round(secondsToWait * 1000)));
        }
    }
    throw new ErrorMaxRetriesExceededError(params.retryLimit);
}
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