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60 lines
1.5 KiB
60 lines
1.5 KiB
'use strict';
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const retry = require('retry');
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class AbortError extends Error {
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constructor(message) {
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super();
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if (message instanceof Error) {
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this.originalError = message;
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({message} = message);
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} else {
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this.originalError = new Error(message);
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this.originalError.stack = this.stack;
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}
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this.name = 'AbortError';
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this.message = message;
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}
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}
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function decorateErrorWithCounts(error, attemptNumber, options) {
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// Minus 1 from attemptNumber because the first attempt does not count as a retry
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const retriesLeft = options.retries - (attemptNumber - 1);
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error.attemptNumber = attemptNumber;
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error.retriesLeft = retriesLeft;
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return error;
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}
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module.exports = (input, options) => new Promise((resolve, reject) => {
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options = Object.assign({
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onFailedAttempt: () => {},
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retries: 10
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}, options);
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const operation = retry.operation(options);
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operation.attempt(attemptNumber => Promise.resolve(attemptNumber)
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.then(input)
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.then(resolve, error => {
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if (error instanceof AbortError) {
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operation.stop();
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reject(error.originalError);
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} else if (error instanceof TypeError) {
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operation.stop();
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reject(error);
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} else if (operation.retry(error)) {
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decorateErrorWithCounts(error, attemptNumber, options);
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options.onFailedAttempt(error);
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} else {
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decorateErrorWithCounts(error, attemptNumber, options);
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options.onFailedAttempt(error);
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reject(operation.mainError());
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}
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})
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);
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});
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module.exports.AbortError = AbortError;
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